diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays')
16 files changed, 7228 insertions, 0 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/Kconfig b/drivers/gpu/drm/omapdrm/displays/Kconfig new file mode 100644 index 000000000000..2a618afe0f53 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/Kconfig @@ -0,0 +1,85 @@ +menu "OMAPDRM External Display Device Drivers" + +config DISPLAY_ENCODER_OPA362 + tristate "OPA362 external analog amplifier" + help + Driver for OPA362 external analog TV amplifier controlled + through a GPIO. + +config DISPLAY_ENCODER_TFP410 + tristate "TFP410 DPI to DVI Encoder" + help + Driver for TFP410 DPI to DVI encoder. + +config DISPLAY_ENCODER_TPD12S015 + tristate "TPD12S015 HDMI ESD protection and level shifter" + help + Driver for TPD12S015, which offers HDMI ESD protection and level + shifting. + +config DISPLAY_CONNECTOR_DVI + tristate "DVI Connector" + depends on I2C + help + Driver for a generic DVI connector. + +config DISPLAY_CONNECTOR_HDMI + tristate "HDMI Connector" + help + Driver for a generic HDMI connector. + +config DISPLAY_CONNECTOR_ANALOG_TV + tristate "Analog TV Connector" + help + Driver for a generic analog TV connector. + +config DISPLAY_PANEL_DPI + tristate "Generic DPI panel" + help + Driver for generic DPI panels. + +config DISPLAY_PANEL_DSI_CM + tristate "Generic DSI Command Mode Panel" + depends on BACKLIGHT_CLASS_DEVICE + help + Driver for generic DSI command mode panels. + +config DISPLAY_PANEL_SONY_ACX565AKM + tristate "ACX565AKM Panel" + depends on SPI && BACKLIGHT_CLASS_DEVICE + help + This is the LCD panel used on Nokia N900 + +config DISPLAY_PANEL_LGPHILIPS_LB035Q02 + tristate "LG.Philips LB035Q02 LCD Panel" + depends on SPI + help + LCD Panel used on the Gumstix Overo Palo35 + +config DISPLAY_PANEL_SHARP_LS037V7DW01 + tristate "Sharp LS037V7DW01 LCD Panel" + depends on BACKLIGHT_CLASS_DEVICE + help + LCD Panel used in TI's SDP3430 and EVM boards + +config DISPLAY_PANEL_TPO_TD028TTEC1 + tristate "TPO TD028TTEC1 LCD Panel" + depends on SPI + help + LCD panel used in Openmoko. + +config DISPLAY_PANEL_TPO_TD043MTEA1 + tristate "TPO TD043MTEA1 LCD Panel" + depends on SPI + help + LCD Panel used in OMAP3 Pandora + +config DISPLAY_PANEL_NEC_NL8048HL11 + tristate "NEC NL8048HL11 Panel" + depends on SPI + depends on BACKLIGHT_CLASS_DEVICE + help + This NEC NL8048HL11 panel is TFT LCD used in the + Zoom2/3/3630 sdp boards. + +endmenu diff --git a/drivers/gpu/drm/omapdrm/displays/Makefile b/drivers/gpu/drm/omapdrm/displays/Makefile new file mode 100644 index 000000000000..9aa176bfbf2e --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/Makefile @@ -0,0 +1,14 @@ +obj-$(CONFIG_DISPLAY_ENCODER_OPA362) += encoder-opa362.o +obj-$(CONFIG_DISPLAY_ENCODER_TFP410) += encoder-tfp410.o +obj-$(CONFIG_DISPLAY_ENCODER_TPD12S015) += encoder-tpd12s015.o +obj-$(CONFIG_DISPLAY_CONNECTOR_DVI) += connector-dvi.o +obj-$(CONFIG_DISPLAY_CONNECTOR_HDMI) += connector-hdmi.o +obj-$(CONFIG_DISPLAY_CONNECTOR_ANALOG_TV) += connector-analog-tv.o +obj-$(CONFIG_DISPLAY_PANEL_DPI) += panel-dpi.o +obj-$(CONFIG_DISPLAY_PANEL_DSI_CM) += panel-dsi-cm.o +obj-$(CONFIG_DISPLAY_PANEL_SONY_ACX565AKM) += panel-sony-acx565akm.o +obj-$(CONFIG_DISPLAY_PANEL_LGPHILIPS_LB035Q02) += panel-lgphilips-lb035q02.o +obj-$(CONFIG_DISPLAY_PANEL_SHARP_LS037V7DW01) += panel-sharp-ls037v7dw01.o +obj-$(CONFIG_DISPLAY_PANEL_TPO_TD028TTEC1) += panel-tpo-td028ttec1.o +obj-$(CONFIG_DISPLAY_PANEL_TPO_TD043MTEA1) += panel-tpo-td043mtea1.o +obj-$(CONFIG_DISPLAY_PANEL_NEC_NL8048HL11) += panel-nec-nl8048hl11.o diff --git a/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c new file mode 100644 index 000000000000..8511c648a15c --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/connector-analog-tv.c @@ -0,0 +1,320 @@ +/* + * Analog TV Connector driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct device *dev; + + struct omap_video_timings timings; + + enum omap_dss_venc_type connector_type; + bool invert_polarity; +}; + +static const struct omap_video_timings tvc_pal_timings = { + .x_res = 720, + .y_res = 574, + .pixelclock = 13500000, + .hsw = 64, + .hfp = 12, + .hbp = 68, + .vsw = 5, + .vfp = 5, + .vbp = 41, + + .interlace = true, +}; + +static const struct of_device_id tvc_of_match[]; + +struct tvc_of_data { + enum omap_dss_venc_type connector_type; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int tvc_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(ddata->dev, "connect\n"); + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.atv->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void tvc_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(ddata->dev, "disconnect\n"); + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.atv->disconnect(in, dssdev); +} + +static int tvc_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(ddata->dev, "enable\n"); + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + in->ops.atv->set_timings(in, &ddata->timings); + + if (!ddata->dev->of_node) { + in->ops.atv->set_type(in, ddata->connector_type); + + in->ops.atv->invert_vid_out_polarity(in, + ddata->invert_polarity); + } + + r = in->ops.atv->enable(in); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return r; +} + +static void tvc_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(ddata->dev, "disable\n"); + + if (!omapdss_device_is_enabled(dssdev)) + return; + + in->ops.atv->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void tvc_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.atv->set_timings(in, timings); +} + +static void tvc_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->timings; +} + +static int tvc_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.atv->check_timings(in, timings); +} + +static u32 tvc_get_wss(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.atv->get_wss(in); +} + +static int tvc_set_wss(struct omap_dss_device *dssdev, u32 wss) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.atv->set_wss(in, wss); +} + +static struct omap_dss_driver tvc_driver = { + .connect = tvc_connect, + .disconnect = tvc_disconnect, + + .enable = tvc_enable, + .disable = tvc_disable, + + .set_timings = tvc_set_timings, + .get_timings = tvc_get_timings, + .check_timings = tvc_check_timings, + + .get_resolution = omapdss_default_get_resolution, + + .get_wss = tvc_get_wss, + .set_wss = tvc_set_wss, +}; + +static int tvc_probe_pdata(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct connector_atv_platform_data *pdata; + struct omap_dss_device *in, *dssdev; + + pdata = dev_get_platdata(&pdev->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "Failed to find video source\n"); + return -EPROBE_DEFER; + } + + ddata->in = in; + + ddata->connector_type = pdata->connector_type; + ddata->invert_polarity = pdata->invert_polarity; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int tvc_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int tvc_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + ddata->dev = &pdev->dev; + + if (dev_get_platdata(&pdev->dev)) { + r = tvc_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = tvc_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->timings = tvc_pal_timings; + + dssdev = &ddata->dssdev; + dssdev->driver = &tvc_driver; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_VENC; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = tvc_pal_timings; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; +err_reg: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit tvc_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(&ddata->dssdev); + + tvc_disable(dssdev); + tvc_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id tvc_of_match[] = { + { .compatible = "omapdss,svideo-connector", }, + { .compatible = "omapdss,composite-video-connector", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, tvc_of_match); + +static struct platform_driver tvc_connector_driver = { + .probe = tvc_probe, + .remove = __exit_p(tvc_remove), + .driver = { + .name = "connector-analog-tv", + .of_match_table = tvc_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(tvc_connector_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("Analog TV Connector driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/connector-dvi.c b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c new file mode 100644 index 000000000000..d811e6dcaef7 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/connector-dvi.c @@ -0,0 +1,398 @@ +/* + * Generic DVI Connector driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/i2c.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> + +#include <drm/drm_edid.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +static const struct omap_video_timings dvic_default_timings = { + .x_res = 640, + .y_res = 480, + + .pixelclock = 23500000, + + .hfp = 48, + .hsw = 32, + .hbp = 80, + + .vfp = 3, + .vsw = 4, + .vbp = 7, + + .vsync_level = OMAPDSS_SIG_ACTIVE_HIGH, + .hsync_level = OMAPDSS_SIG_ACTIVE_HIGH, + .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, +}; + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct omap_video_timings timings; + + struct i2c_adapter *i2c_adapter; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int dvic_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dvi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void dvic_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dvi->disconnect(in, dssdev); +} + +static int dvic_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + in->ops.dvi->set_timings(in, &ddata->timings); + + r = in->ops.dvi->enable(in); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void dvic_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + in->ops.dvi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void dvic_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.dvi->set_timings(in, timings); +} + +static void dvic_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->timings; +} + +static int dvic_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dvi->check_timings(in, timings); +} + +static int dvic_ddc_read(struct i2c_adapter *adapter, + unsigned char *buf, u16 count, u8 offset) +{ + int r, retries; + + for (retries = 3; retries > 0; retries--) { + struct i2c_msg msgs[] = { + { + .addr = DDC_ADDR, + .flags = 0, + .len = 1, + .buf = &offset, + }, { + .addr = DDC_ADDR, + .flags = I2C_M_RD, + .len = count, + .buf = buf, + } + }; + + r = i2c_transfer(adapter, msgs, 2); + if (r == 2) + return 0; + + if (r != -EAGAIN) + break; + } + + return r < 0 ? r : -EIO; +} + +static int dvic_read_edid(struct omap_dss_device *dssdev, + u8 *edid, int len) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + int r, l, bytes_read; + + if (!ddata->i2c_adapter) + return -ENODEV; + + l = min(EDID_LENGTH, len); + r = dvic_ddc_read(ddata->i2c_adapter, edid, l, 0); + if (r) + return r; + + bytes_read = l; + + /* if there are extensions, read second block */ + if (len > EDID_LENGTH && edid[0x7e] > 0) { + l = min(EDID_LENGTH, len - EDID_LENGTH); + + r = dvic_ddc_read(ddata->i2c_adapter, edid + EDID_LENGTH, + l, EDID_LENGTH); + if (r) + return r; + + bytes_read += l; + } + + return bytes_read; +} + +static bool dvic_detect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + unsigned char out; + int r; + + if (!ddata->i2c_adapter) + return true; + + r = dvic_ddc_read(ddata->i2c_adapter, &out, 1, 0); + + return r == 0; +} + +static struct omap_dss_driver dvic_driver = { + .connect = dvic_connect, + .disconnect = dvic_disconnect, + + .enable = dvic_enable, + .disable = dvic_disable, + + .set_timings = dvic_set_timings, + .get_timings = dvic_get_timings, + .check_timings = dvic_check_timings, + + .get_resolution = omapdss_default_get_resolution, + + .read_edid = dvic_read_edid, + .detect = dvic_detect, +}; + +static int dvic_probe_pdata(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct connector_dvi_platform_data *pdata; + struct omap_dss_device *in, *dssdev; + int i2c_bus_num; + + pdata = dev_get_platdata(&pdev->dev); + i2c_bus_num = pdata->i2c_bus_num; + + if (i2c_bus_num != -1) { + struct i2c_adapter *adapter; + + adapter = i2c_get_adapter(i2c_bus_num); + if (!adapter) { + dev_err(&pdev->dev, + "Failed to get I2C adapter, bus %d\n", + i2c_bus_num); + return -EPROBE_DEFER; + } + + ddata->i2c_adapter = adapter; + } + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + i2c_put_adapter(ddata->i2c_adapter); + + dev_err(&pdev->dev, "Failed to find video source\n"); + return -EPROBE_DEFER; + } + + ddata->in = in; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int dvic_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + struct device_node *adapter_node; + struct i2c_adapter *adapter; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + adapter_node = of_parse_phandle(node, "ddc-i2c-bus", 0); + if (adapter_node) { + adapter = of_get_i2c_adapter_by_node(adapter_node); + if (adapter == NULL) { + dev_err(&pdev->dev, "failed to parse ddc-i2c-bus\n"); + omap_dss_put_device(ddata->in); + return -EPROBE_DEFER; + } + + ddata->i2c_adapter = adapter; + } + + return 0; +} + +static int dvic_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + if (dev_get_platdata(&pdev->dev)) { + r = dvic_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = dvic_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->timings = dvic_default_timings; + + dssdev = &ddata->dssdev; + dssdev->driver = &dvic_driver; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_DVI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = dvic_default_timings; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: + omap_dss_put_device(ddata->in); + + i2c_put_adapter(ddata->i2c_adapter); + + return r; +} + +static int __exit dvic_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(&ddata->dssdev); + + dvic_disable(dssdev); + dvic_disconnect(dssdev); + + omap_dss_put_device(in); + + i2c_put_adapter(ddata->i2c_adapter); + + return 0; +} + +static const struct of_device_id dvic_of_match[] = { + { .compatible = "omapdss,dvi-connector", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, dvic_of_match); + +static struct platform_driver dvi_connector_driver = { + .probe = dvic_probe, + .remove = __exit_p(dvic_remove), + .driver = { + .name = "connector-dvi", + .of_match_table = dvic_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(dvi_connector_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("Generic DVI Connector driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c new file mode 100644 index 000000000000..6ee4129bc0c0 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/connector-hdmi.c @@ -0,0 +1,348 @@ +/* + * HDMI Connector driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/slab.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/of.h> +#include <linux/of_gpio.h> + +#include <drm/drm_edid.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +static const struct omap_video_timings hdmic_default_timings = { + .x_res = 640, + .y_res = 480, + .pixelclock = 25175000, + .hsw = 96, + .hfp = 16, + .hbp = 48, + .vsw = 2, + .vfp = 11, + .vbp = 31, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + + .interlace = false, +}; + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct device *dev; + + struct omap_video_timings timings; + + int hpd_gpio; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int hdmic_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(ddata->dev, "connect\n"); + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.hdmi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void hdmic_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(ddata->dev, "disconnect\n"); + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.hdmi->disconnect(in, dssdev); +} + +static int hdmic_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(ddata->dev, "enable\n"); + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + in->ops.hdmi->set_timings(in, &ddata->timings); + + r = in->ops.hdmi->enable(in); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return r; +} + +static void hdmic_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(ddata->dev, "disable\n"); + + if (!omapdss_device_is_enabled(dssdev)) + return; + + in->ops.hdmi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void hdmic_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.hdmi->set_timings(in, timings); +} + +static void hdmic_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->timings; +} + +static int hdmic_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->check_timings(in, timings); +} + +static int hdmic_read_edid(struct omap_dss_device *dssdev, + u8 *edid, int len) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->read_edid(in, edid, len); +} + +static bool hdmic_detect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (gpio_is_valid(ddata->hpd_gpio)) + return gpio_get_value_cansleep(ddata->hpd_gpio); + else + return in->ops.hdmi->detect(in); +} + +static int hdmic_set_hdmi_mode(struct omap_dss_device *dssdev, bool hdmi_mode) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->set_hdmi_mode(in, hdmi_mode); +} + +static int hdmic_set_infoframe(struct omap_dss_device *dssdev, + const struct hdmi_avi_infoframe *avi) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->set_infoframe(in, avi); +} + +static struct omap_dss_driver hdmic_driver = { + .connect = hdmic_connect, + .disconnect = hdmic_disconnect, + + .enable = hdmic_enable, + .disable = hdmic_disable, + + .set_timings = hdmic_set_timings, + .get_timings = hdmic_get_timings, + .check_timings = hdmic_check_timings, + + .get_resolution = omapdss_default_get_resolution, + + .read_edid = hdmic_read_edid, + .detect = hdmic_detect, + .set_hdmi_mode = hdmic_set_hdmi_mode, + .set_hdmi_infoframe = hdmic_set_infoframe, +}; + +static int hdmic_probe_pdata(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct connector_hdmi_platform_data *pdata; + struct omap_dss_device *in, *dssdev; + + pdata = dev_get_platdata(&pdev->dev); + + ddata->hpd_gpio = -ENODEV; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "Failed to find video source\n"); + return -EPROBE_DEFER; + } + + ddata->in = in; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int hdmic_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + int gpio; + + /* HPD GPIO */ + gpio = of_get_named_gpio(node, "hpd-gpios", 0); + if (gpio_is_valid(gpio)) + ddata->hpd_gpio = gpio; + else + ddata->hpd_gpio = -ENODEV; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int hdmic_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + ddata->dev = &pdev->dev; + + if (dev_get_platdata(&pdev->dev)) { + r = hdmic_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = hdmic_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + if (gpio_is_valid(ddata->hpd_gpio)) { + r = devm_gpio_request_one(&pdev->dev, ddata->hpd_gpio, + GPIOF_DIR_IN, "hdmi_hpd"); + if (r) + goto err_reg; + } + + ddata->timings = hdmic_default_timings; + + dssdev = &ddata->dssdev; + dssdev->driver = &hdmic_driver; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_HDMI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = hdmic_default_timings; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; +err_reg: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit hdmic_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(&ddata->dssdev); + + hdmic_disable(dssdev); + hdmic_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id hdmic_of_match[] = { + { .compatible = "omapdss,hdmi-connector", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, hdmic_of_match); + +static struct platform_driver hdmi_connector_driver = { + .probe = hdmic_probe, + .remove = __exit_p(hdmic_remove), + .driver = { + .name = "connector-hdmi", + .of_match_table = hdmic_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(hdmi_connector_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("HDMI Connector driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c new file mode 100644 index 000000000000..8c246c213e06 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/encoder-opa362.c @@ -0,0 +1,278 @@ +/* + * OPA362 analog video amplifier with output/power control + * + * Copyright (C) 2014 Golden Delicious Computers + * Author: H. Nikolaus Schaller <hns@goldelico.com> + * + * based on encoder-tfp410 + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct gpio_desc *enable_gpio; + + struct omap_video_timings timings; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int opa362_connect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(dssdev->dev, "connect\n"); + + if (omapdss_device_is_connected(dssdev)) + return -EBUSY; + + r = in->ops.atv->connect(in, dssdev); + if (r) + return r; + + dst->src = dssdev; + dssdev->dst = dst; + + return 0; +} + +static void opa362_disconnect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(dssdev->dev, "disconnect\n"); + + WARN_ON(!omapdss_device_is_connected(dssdev)); + if (!omapdss_device_is_connected(dssdev)) + return; + + WARN_ON(dst != dssdev->dst); + if (dst != dssdev->dst) + return; + + dst->src = NULL; + dssdev->dst = NULL; + + in->ops.atv->disconnect(in, &ddata->dssdev); +} + +static int opa362_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(dssdev->dev, "enable\n"); + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + in->ops.atv->set_timings(in, &ddata->timings); + + r = in->ops.atv->enable(in); + if (r) + return r; + + if (ddata->enable_gpio) + gpiod_set_value_cansleep(ddata->enable_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void opa362_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(dssdev->dev, "disable\n"); + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (ddata->enable_gpio) + gpiod_set_value_cansleep(ddata->enable_gpio, 0); + + in->ops.atv->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void opa362_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(dssdev->dev, "set_timings\n"); + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.atv->set_timings(in, timings); +} + +static void opa362_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + dev_dbg(dssdev->dev, "get_timings\n"); + + *timings = ddata->timings; +} + +static int opa362_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(dssdev->dev, "check_timings\n"); + + return in->ops.atv->check_timings(in, timings); +} + +static void opa362_set_type(struct omap_dss_device *dssdev, + enum omap_dss_venc_type type) +{ + /* we can only drive a COMPOSITE output */ + WARN_ON(type != OMAP_DSS_VENC_TYPE_COMPOSITE); + +} + +static const struct omapdss_atv_ops opa362_atv_ops = { + .connect = opa362_connect, + .disconnect = opa362_disconnect, + + .enable = opa362_enable, + .disable = opa362_disable, + + .check_timings = opa362_check_timings, + .set_timings = opa362_set_timings, + .get_timings = opa362_get_timings, + + .set_type = opa362_set_type, +}; + +static int opa362_probe(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev, *in; + struct gpio_desc *gpio; + int r; + + dev_dbg(&pdev->dev, "probe\n"); + + if (node == NULL) { + dev_err(&pdev->dev, "Unable to find device tree\n"); + return -EINVAL; + } + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + gpio = devm_gpiod_get_optional(&pdev->dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + ddata->enable_gpio = gpio; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + dssdev = &ddata->dssdev; + dssdev->ops.atv = &opa362_atv_ops; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_VENC; + dssdev->output_type = OMAP_DISPLAY_TYPE_VENC; + dssdev->owner = THIS_MODULE; + + r = omapdss_register_output(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register output\n"); + goto err_reg; + } + + return 0; +err_reg: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit opa362_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_output(&ddata->dssdev); + + WARN_ON(omapdss_device_is_enabled(dssdev)); + if (omapdss_device_is_enabled(dssdev)) + opa362_disable(dssdev); + + WARN_ON(omapdss_device_is_connected(dssdev)); + if (omapdss_device_is_connected(dssdev)) + opa362_disconnect(dssdev, dssdev->dst); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id opa362_of_match[] = { + { .compatible = "omapdss,ti,opa362", }, + {}, +}; +MODULE_DEVICE_TABLE(of, opa362_of_match); + +static struct platform_driver opa362_driver = { + .probe = opa362_probe, + .remove = __exit_p(opa362_remove), + .driver = { + .name = "amplifier-opa362", + .of_match_table = opa362_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(opa362_driver); + +MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>"); +MODULE_DESCRIPTION("OPA362 analog video amplifier with output/power control"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c new file mode 100644 index 000000000000..d9048b3df495 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/encoder-tfp410.c @@ -0,0 +1,320 @@ +/* + * TFP410 DPI-to-DVI encoder driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + int pd_gpio; + int data_lines; + + struct omap_video_timings timings; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int tfp410_connect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return -EBUSY; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + dst->src = dssdev; + dssdev->dst = dst; + + return 0; +} + +static void tfp410_disconnect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + WARN_ON(!omapdss_device_is_connected(dssdev)); + if (!omapdss_device_is_connected(dssdev)) + return; + + WARN_ON(dst != dssdev->dst); + if (dst != dssdev->dst) + return; + + dst->src = NULL; + dssdev->dst = NULL; + + in->ops.dpi->disconnect(in, &ddata->dssdev); +} + +static int tfp410_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + in->ops.dpi->set_timings(in, &ddata->timings); + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + if (gpio_is_valid(ddata->pd_gpio)) + gpio_set_value_cansleep(ddata->pd_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void tfp410_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (gpio_is_valid(ddata->pd_gpio)) + gpio_set_value_cansleep(ddata->pd_gpio, 0); + + in->ops.dpi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void tfp410_fix_timings(struct omap_video_timings *timings) +{ + timings->data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; + timings->sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE; + timings->de_level = OMAPDSS_SIG_ACTIVE_HIGH; +} + +static void tfp410_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + tfp410_fix_timings(timings); + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void tfp410_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->timings; +} + +static int tfp410_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + tfp410_fix_timings(timings); + + return in->ops.dpi->check_timings(in, timings); +} + +static const struct omapdss_dvi_ops tfp410_dvi_ops = { + .connect = tfp410_connect, + .disconnect = tfp410_disconnect, + + .enable = tfp410_enable, + .disable = tfp410_disable, + + .check_timings = tfp410_check_timings, + .set_timings = tfp410_set_timings, + .get_timings = tfp410_get_timings, +}; + +static int tfp410_probe_pdata(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct encoder_tfp410_platform_data *pdata; + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&pdev->dev); + + ddata->pd_gpio = pdata->power_down_gpio; + + ddata->data_lines = pdata->data_lines; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "Failed to find video source\n"); + return -ENODEV; + } + + ddata->in = in; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int tfp410_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + int gpio; + + gpio = of_get_named_gpio(node, "powerdown-gpios", 0); + + if (gpio_is_valid(gpio) || gpio == -ENOENT) { + ddata->pd_gpio = gpio; + } else { + dev_err(&pdev->dev, "failed to parse PD gpio\n"); + return gpio; + } + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int tfp410_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + if (dev_get_platdata(&pdev->dev)) { + r = tfp410_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = tfp410_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + if (gpio_is_valid(ddata->pd_gpio)) { + r = devm_gpio_request_one(&pdev->dev, ddata->pd_gpio, + GPIOF_OUT_INIT_LOW, "tfp410 PD"); + if (r) { + dev_err(&pdev->dev, "Failed to request PD GPIO %d\n", + ddata->pd_gpio); + goto err_gpio; + } + } + + dssdev = &ddata->dssdev; + dssdev->ops.dvi = &tfp410_dvi_ops; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->output_type = OMAP_DISPLAY_TYPE_DVI; + dssdev->owner = THIS_MODULE; + dssdev->phy.dpi.data_lines = ddata->data_lines; + dssdev->port_num = 1; + + r = omapdss_register_output(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register output\n"); + goto err_reg; + } + + return 0; +err_reg: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit tfp410_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_output(&ddata->dssdev); + + WARN_ON(omapdss_device_is_enabled(dssdev)); + if (omapdss_device_is_enabled(dssdev)) + tfp410_disable(dssdev); + + WARN_ON(omapdss_device_is_connected(dssdev)); + if (omapdss_device_is_connected(dssdev)) + tfp410_disconnect(dssdev, dssdev->dst); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id tfp410_of_match[] = { + { .compatible = "omapdss,ti,tfp410", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, tfp410_of_match); + +static struct platform_driver tfp410_driver = { + .probe = tfp410_probe, + .remove = __exit_p(tfp410_remove), + .driver = { + .name = "tfp410", + .of_match_table = tfp410_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(tfp410_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("TFP410 DPI to DVI encoder driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c new file mode 100644 index 000000000000..990af6baeb0f --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/encoder-tpd12s015.c @@ -0,0 +1,379 @@ +/* + * TPD12S015 HDMI ESD protection & level shifter chip driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/completion.h> +#include <linux/delay.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/gpio.h> +#include <linux/platform_device.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + int ct_cp_hpd_gpio; + int ls_oe_gpio; + int hpd_gpio; + + struct omap_video_timings timings; +}; + +#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev) + +static int tpd_connect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + r = in->ops.hdmi->connect(in, dssdev); + if (r) + return r; + + dst->src = dssdev; + dssdev->dst = dst; + + gpio_set_value_cansleep(ddata->ct_cp_hpd_gpio, 1); + /* DC-DC converter needs at max 300us to get to 90% of 5V */ + udelay(300); + + return 0; +} + +static void tpd_disconnect(struct omap_dss_device *dssdev, + struct omap_dss_device *dst) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + WARN_ON(dst != dssdev->dst); + + if (dst != dssdev->dst) + return; + + gpio_set_value_cansleep(ddata->ct_cp_hpd_gpio, 0); + + dst->src = NULL; + dssdev->dst = NULL; + + in->ops.hdmi->disconnect(in, &ddata->dssdev); +} + +static int tpd_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (dssdev->state == OMAP_DSS_DISPLAY_ACTIVE) + return 0; + + in->ops.hdmi->set_timings(in, &ddata->timings); + + r = in->ops.hdmi->enable(in); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return r; +} + +static void tpd_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) + return; + + in->ops.hdmi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void tpd_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->timings = *timings; + dssdev->panel.timings = *timings; + + in->ops.hdmi->set_timings(in, timings); +} + +static void tpd_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->timings; +} + +static int tpd_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + r = in->ops.hdmi->check_timings(in, timings); + + return r; +} + +static int tpd_read_edid(struct omap_dss_device *dssdev, + u8 *edid, int len) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!gpio_get_value_cansleep(ddata->hpd_gpio)) + return -ENODEV; + + if (gpio_is_valid(ddata->ls_oe_gpio)) + gpio_set_value_cansleep(ddata->ls_oe_gpio, 1); + + r = in->ops.hdmi->read_edid(in, edid, len); + + if (gpio_is_valid(ddata->ls_oe_gpio)) + gpio_set_value_cansleep(ddata->ls_oe_gpio, 0); + + return r; +} + +static bool tpd_detect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + return gpio_get_value_cansleep(ddata->hpd_gpio); +} + +static int tpd_set_infoframe(struct omap_dss_device *dssdev, + const struct hdmi_avi_infoframe *avi) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->set_infoframe(in, avi); +} + +static int tpd_set_hdmi_mode(struct omap_dss_device *dssdev, + bool hdmi_mode) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.hdmi->set_hdmi_mode(in, hdmi_mode); +} + +static const struct omapdss_hdmi_ops tpd_hdmi_ops = { + .connect = tpd_connect, + .disconnect = tpd_disconnect, + + .enable = tpd_enable, + .disable = tpd_disable, + + .check_timings = tpd_check_timings, + .set_timings = tpd_set_timings, + .get_timings = tpd_get_timings, + + .read_edid = tpd_read_edid, + .detect = tpd_detect, + .set_infoframe = tpd_set_infoframe, + .set_hdmi_mode = tpd_set_hdmi_mode, +}; + +static int tpd_probe_pdata(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct encoder_tpd12s015_platform_data *pdata; + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&pdev->dev); + + ddata->ct_cp_hpd_gpio = pdata->ct_cp_hpd_gpio; + ddata->ls_oe_gpio = pdata->ls_oe_gpio; + ddata->hpd_gpio = pdata->hpd_gpio; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "Failed to find video source\n"); + return -ENODEV; + } + + ddata->in = in; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int tpd_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + int gpio; + + /* CT CP HPD GPIO */ + gpio = of_get_gpio(node, 0); + if (!gpio_is_valid(gpio)) { + dev_err(&pdev->dev, "failed to parse CT CP HPD gpio\n"); + return gpio; + } + ddata->ct_cp_hpd_gpio = gpio; + + /* LS OE GPIO */ + gpio = of_get_gpio(node, 1); + if (gpio_is_valid(gpio) || gpio == -ENOENT) { + ddata->ls_oe_gpio = gpio; + } else { + dev_err(&pdev->dev, "failed to parse LS OE gpio\n"); + return gpio; + } + + /* HPD GPIO */ + gpio = of_get_gpio(node, 2); + if (!gpio_is_valid(gpio)) { + dev_err(&pdev->dev, "failed to parse HPD gpio\n"); + return gpio; + } + ddata->hpd_gpio = gpio; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int tpd_probe(struct platform_device *pdev) +{ + struct omap_dss_device *in, *dssdev; + struct panel_drv_data *ddata; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + if (dev_get_platdata(&pdev->dev)) { + r = tpd_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = tpd_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + r = devm_gpio_request_one(&pdev->dev, ddata->ct_cp_hpd_gpio, + GPIOF_OUT_INIT_LOW, "hdmi_ct_cp_hpd"); + if (r) + goto err_gpio; + + if (gpio_is_valid(ddata->ls_oe_gpio)) { + r = devm_gpio_request_one(&pdev->dev, ddata->ls_oe_gpio, + GPIOF_OUT_INIT_LOW, "hdmi_ls_oe"); + if (r) + goto err_gpio; + } + + r = devm_gpio_request_one(&pdev->dev, ddata->hpd_gpio, + GPIOF_DIR_IN, "hdmi_hpd"); + if (r) + goto err_gpio; + + dssdev = &ddata->dssdev; + dssdev->ops.hdmi = &tpd_hdmi_ops; + dssdev->dev = &pdev->dev; + dssdev->type = OMAP_DISPLAY_TYPE_HDMI; + dssdev->output_type = OMAP_DISPLAY_TYPE_HDMI; + dssdev->owner = THIS_MODULE; + dssdev->port_num = 1; + + in = ddata->in; + + r = omapdss_register_output(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register output\n"); + goto err_reg; + } + + return 0; +err_reg: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit tpd_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_output(&ddata->dssdev); + + WARN_ON(omapdss_device_is_enabled(dssdev)); + if (omapdss_device_is_enabled(dssdev)) + tpd_disable(dssdev); + + WARN_ON(omapdss_device_is_connected(dssdev)); + if (omapdss_device_is_connected(dssdev)) + tpd_disconnect(dssdev, dssdev->dst); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id tpd_of_match[] = { + { .compatible = "omapdss,ti,tpd12s015", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, tpd_of_match); + +static struct platform_driver tpd_driver = { + .probe = tpd_probe, + .remove = __exit_p(tpd_remove), + .driver = { + .name = "tpd12s015", + .of_match_table = tpd_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(tpd_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("TPD12S015 driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c new file mode 100644 index 000000000000..e780fd4f8b46 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c @@ -0,0 +1,328 @@ +/* + * Generic MIPI DPI Panel Driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/of.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> +#include <video/of_display_timing.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + int data_lines; + + struct omap_video_timings videomode; + + /* used for non-DT boot, to be removed */ + int backlight_gpio; + + struct gpio_desc *enable_gpio; +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int panel_dpi_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void panel_dpi_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int panel_dpi_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + gpiod_set_value_cansleep(ddata->enable_gpio, 1); + + if (gpio_is_valid(ddata->backlight_gpio)) + gpio_set_value_cansleep(ddata->backlight_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void panel_dpi_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (gpio_is_valid(ddata->backlight_gpio)) + gpio_set_value_cansleep(ddata->backlight_gpio, 0); + + gpiod_set_value_cansleep(ddata->enable_gpio, 0); + + in->ops.dpi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void panel_dpi_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void panel_dpi_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int panel_dpi_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver panel_dpi_ops = { + .connect = panel_dpi_connect, + .disconnect = panel_dpi_disconnect, + + .enable = panel_dpi_enable, + .disable = panel_dpi_disable, + + .set_timings = panel_dpi_set_timings, + .get_timings = panel_dpi_get_timings, + .check_timings = panel_dpi_check_timings, + + .get_resolution = omapdss_default_get_resolution, +}; + +static int panel_dpi_probe_pdata(struct platform_device *pdev) +{ + const struct panel_dpi_platform_data *pdata; + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev, *in; + struct videomode vm; + int r; + + pdata = dev_get_platdata(&pdev->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + videomode_from_timing(pdata->display_timing, &vm); + videomode_to_omap_video_timings(&vm, &ddata->videomode); + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + r = devm_gpio_request_one(&pdev->dev, pdata->enable_gpio, + GPIOF_OUT_INIT_LOW, "panel enable"); + if (r) + goto err_gpio; + + ddata->enable_gpio = gpio_to_desc(pdata->enable_gpio); + + ddata->backlight_gpio = pdata->backlight_gpio; + + return 0; + +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int panel_dpi_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + int r; + struct display_timing timing; + struct videomode vm; + struct gpio_desc *gpio; + + gpio = devm_gpiod_get_optional(&pdev->dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) + return PTR_ERR(gpio); + + ddata->enable_gpio = gpio; + + ddata->backlight_gpio = -ENOENT; + + r = of_get_display_timing(node, "panel-timing", &timing); + if (r) { + dev_err(&pdev->dev, "failed to get video timing\n"); + return r; + } + + videomode_from_timing(&timing, &vm); + videomode_to_omap_video_timings(&vm, &ddata->videomode); + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int panel_dpi_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + if (dev_get_platdata(&pdev->dev)) { + r = panel_dpi_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = panel_dpi_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + if (gpio_is_valid(ddata->backlight_gpio)) { + r = devm_gpio_request_one(&pdev->dev, ddata->backlight_gpio, + GPIOF_OUT_INIT_LOW, "panel backlight"); + if (r) + goto err_gpio; + } + + dssdev = &ddata->dssdev; + dssdev->dev = &pdev->dev; + dssdev->driver = &panel_dpi_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + dssdev->phy.dpi.data_lines = ddata->data_lines; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit panel_dpi_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(dssdev); + + panel_dpi_disable(dssdev); + panel_dpi_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id panel_dpi_of_match[] = { + { .compatible = "omapdss,panel-dpi", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, panel_dpi_of_match); + +static struct platform_driver panel_dpi_driver = { + .probe = panel_dpi_probe, + .remove = __exit_p(panel_dpi_remove), + .driver = { + .name = "panel-dpi", + .of_match_table = panel_dpi_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(panel_dpi_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("Generic MIPI DPI Panel Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c new file mode 100644 index 000000000000..3414c2609320 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-dsi-cm.c @@ -0,0 +1,1388 @@ +/* + * Generic DSI Command Mode panel driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +/* #define DEBUG */ + +#include <linux/backlight.h> +#include <linux/delay.h> +#include <linux/fb.h> +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/jiffies.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/sched.h> +#include <linux/slab.h> +#include <linux/workqueue.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> +#include <video/mipi_display.h> + +/* DSI Virtual channel. Hardcoded for now. */ +#define TCH 0 + +#define DCS_READ_NUM_ERRORS 0x05 +#define DCS_BRIGHTNESS 0x51 +#define DCS_CTRL_DISPLAY 0x53 +#define DCS_GET_ID1 0xda +#define DCS_GET_ID2 0xdb +#define DCS_GET_ID3 0xdc + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct omap_video_timings timings; + + struct platform_device *pdev; + + struct mutex lock; + + struct backlight_device *bldev; + + unsigned long hw_guard_end; /* next value of jiffies when we can + * issue the next sleep in/out command + */ + unsigned long hw_guard_wait; /* max guard time in jiffies */ + + /* panel HW configuration from DT or platform data */ + int reset_gpio; + int ext_te_gpio; + + bool use_dsi_backlight; + + struct omap_dsi_pin_config pin_config; + + /* runtime variables */ + bool enabled; + + bool te_enabled; + + atomic_t do_update; + int channel; + + struct delayed_work te_timeout_work; + + bool intro_printed; + + struct workqueue_struct *workqueue; + + bool ulps_enabled; + unsigned ulps_timeout; + struct delayed_work ulps_work; +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static irqreturn_t dsicm_te_isr(int irq, void *data); +static void dsicm_te_timeout_work_callback(struct work_struct *work); +static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable); + +static int dsicm_panel_reset(struct panel_drv_data *ddata); + +static void dsicm_ulps_work(struct work_struct *work); + +static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec) +{ + ddata->hw_guard_wait = msecs_to_jiffies(guard_msec); + ddata->hw_guard_end = jiffies + ddata->hw_guard_wait; +} + +static void hw_guard_wait(struct panel_drv_data *ddata) +{ + unsigned long wait = ddata->hw_guard_end - jiffies; + + if ((long)wait > 0 && wait <= ddata->hw_guard_wait) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(wait); + } +} + +static int dsicm_dcs_read_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 *data) +{ + struct omap_dss_device *in = ddata->in; + int r; + u8 buf[1]; + + r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, buf, 1); + + if (r < 0) + return r; + + *data = buf[0]; + + return 0; +} + +static int dsicm_dcs_write_0(struct panel_drv_data *ddata, u8 dcs_cmd) +{ + struct omap_dss_device *in = ddata->in; + return in->ops.dsi->dcs_write(in, ddata->channel, &dcs_cmd, 1); +} + +static int dsicm_dcs_write_1(struct panel_drv_data *ddata, u8 dcs_cmd, u8 param) +{ + struct omap_dss_device *in = ddata->in; + u8 buf[2] = { dcs_cmd, param }; + + return in->ops.dsi->dcs_write(in, ddata->channel, buf, 2); +} + +static int dsicm_sleep_in(struct panel_drv_data *ddata) + +{ + struct omap_dss_device *in = ddata->in; + u8 cmd; + int r; + + hw_guard_wait(ddata); + + cmd = MIPI_DCS_ENTER_SLEEP_MODE; + r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, &cmd, 1); + if (r) + return r; + + hw_guard_start(ddata, 120); + + usleep_range(5000, 10000); + + return 0; +} + +static int dsicm_sleep_out(struct panel_drv_data *ddata) +{ + int r; + + hw_guard_wait(ddata); + + r = dsicm_dcs_write_0(ddata, MIPI_DCS_EXIT_SLEEP_MODE); + if (r) + return r; + + hw_guard_start(ddata, 120); + + usleep_range(5000, 10000); + + return 0; +} + +static int dsicm_get_id(struct panel_drv_data *ddata, u8 *id1, u8 *id2, u8 *id3) +{ + int r; + + r = dsicm_dcs_read_1(ddata, DCS_GET_ID1, id1); + if (r) + return r; + r = dsicm_dcs_read_1(ddata, DCS_GET_ID2, id2); + if (r) + return r; + r = dsicm_dcs_read_1(ddata, DCS_GET_ID3, id3); + if (r) + return r; + + return 0; +} + +static int dsicm_set_update_window(struct panel_drv_data *ddata, + u16 x, u16 y, u16 w, u16 h) +{ + struct omap_dss_device *in = ddata->in; + int r; + u16 x1 = x; + u16 x2 = x + w - 1; + u16 y1 = y; + u16 y2 = y + h - 1; + + u8 buf[5]; + buf[0] = MIPI_DCS_SET_COLUMN_ADDRESS; + buf[1] = (x1 >> 8) & 0xff; + buf[2] = (x1 >> 0) & 0xff; + buf[3] = (x2 >> 8) & 0xff; + buf[4] = (x2 >> 0) & 0xff; + + r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); + if (r) + return r; + + buf[0] = MIPI_DCS_SET_PAGE_ADDRESS; + buf[1] = (y1 >> 8) & 0xff; + buf[2] = (y1 >> 0) & 0xff; + buf[3] = (y2 >> 8) & 0xff; + buf[4] = (y2 >> 0) & 0xff; + + r = in->ops.dsi->dcs_write_nosync(in, ddata->channel, buf, sizeof(buf)); + if (r) + return r; + + in->ops.dsi->bta_sync(in, ddata->channel); + + return r; +} + +static void dsicm_queue_ulps_work(struct panel_drv_data *ddata) +{ + if (ddata->ulps_timeout > 0) + queue_delayed_work(ddata->workqueue, &ddata->ulps_work, + msecs_to_jiffies(ddata->ulps_timeout)); +} + +static void dsicm_cancel_ulps_work(struct panel_drv_data *ddata) +{ + cancel_delayed_work(&ddata->ulps_work); +} + +static int dsicm_enter_ulps(struct panel_drv_data *ddata) +{ + struct omap_dss_device *in = ddata->in; + int r; + + if (ddata->ulps_enabled) + return 0; + + dsicm_cancel_ulps_work(ddata); + + r = _dsicm_enable_te(ddata, false); + if (r) + goto err; + + if (gpio_is_valid(ddata->ext_te_gpio)) + disable_irq(gpio_to_irq(ddata->ext_te_gpio)); + + in->ops.dsi->disable(in, false, true); + + ddata->ulps_enabled = true; + + return 0; + +err: + dev_err(&ddata->pdev->dev, "enter ULPS failed"); + dsicm_panel_reset(ddata); + + ddata->ulps_enabled = false; + + dsicm_queue_ulps_work(ddata); + + return r; +} + +static int dsicm_exit_ulps(struct panel_drv_data *ddata) +{ + struct omap_dss_device *in = ddata->in; + int r; + + if (!ddata->ulps_enabled) + return 0; + + r = in->ops.dsi->enable(in); + if (r) { + dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); + goto err1; + } + + in->ops.dsi->enable_hs(in, ddata->channel, true); + + r = _dsicm_enable_te(ddata, true); + if (r) { + dev_err(&ddata->pdev->dev, "failed to re-enable TE"); + goto err2; + } + + if (gpio_is_valid(ddata->ext_te_gpio)) + enable_irq(gpio_to_irq(ddata->ext_te_gpio)); + + dsicm_queue_ulps_work(ddata); + + ddata->ulps_enabled = false; + + return 0; + +err2: + dev_err(&ddata->pdev->dev, "failed to exit ULPS"); + + r = dsicm_panel_reset(ddata); + if (!r) { + if (gpio_is_valid(ddata->ext_te_gpio)) + enable_irq(gpio_to_irq(ddata->ext_te_gpio)); + ddata->ulps_enabled = false; + } +err1: + dsicm_queue_ulps_work(ddata); + + return r; +} + +static int dsicm_wake_up(struct panel_drv_data *ddata) +{ + if (ddata->ulps_enabled) + return dsicm_exit_ulps(ddata); + + dsicm_cancel_ulps_work(ddata); + dsicm_queue_ulps_work(ddata); + return 0; +} + +static int dsicm_bl_update_status(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + struct omap_dss_device *in = ddata->in; + int r; + int level; + + if (dev->props.fb_blank == FB_BLANK_UNBLANK && + dev->props.power == FB_BLANK_UNBLANK) + level = dev->props.brightness; + else + level = 0; + + dev_dbg(&ddata->pdev->dev, "update brightness to %d\n", level); + + mutex_lock(&ddata->lock); + + if (ddata->enabled) { + in->ops.dsi->bus_lock(in); + + r = dsicm_wake_up(ddata); + if (!r) + r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, level); + + in->ops.dsi->bus_unlock(in); + } else { + r = 0; + } + + mutex_unlock(&ddata->lock); + + return r; +} + +static int dsicm_bl_get_intensity(struct backlight_device *dev) +{ + if (dev->props.fb_blank == FB_BLANK_UNBLANK && + dev->props.power == FB_BLANK_UNBLANK) + return dev->props.brightness; + + return 0; +} + +static const struct backlight_ops dsicm_bl_ops = { + .get_brightness = dsicm_bl_get_intensity, + .update_status = dsicm_bl_update_status, +}; + +static void dsicm_get_resolution(struct omap_dss_device *dssdev, + u16 *xres, u16 *yres) +{ + *xres = dssdev->panel.timings.x_res; + *yres = dssdev->panel.timings.y_res; +} + +static ssize_t dsicm_num_errors_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *in = ddata->in; + u8 errors = 0; + int r; + + mutex_lock(&ddata->lock); + + if (ddata->enabled) { + in->ops.dsi->bus_lock(in); + + r = dsicm_wake_up(ddata); + if (!r) + r = dsicm_dcs_read_1(ddata, DCS_READ_NUM_ERRORS, + &errors); + + in->ops.dsi->bus_unlock(in); + } else { + r = -ENODEV; + } + + mutex_unlock(&ddata->lock); + + if (r) + return r; + + return snprintf(buf, PAGE_SIZE, "%d\n", errors); +} + +static ssize_t dsicm_hw_revision_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *in = ddata->in; + u8 id1, id2, id3; + int r; + + mutex_lock(&ddata->lock); + + if (ddata->enabled) { + in->ops.dsi->bus_lock(in); + + r = dsicm_wake_up(ddata); + if (!r) + r = dsicm_get_id(ddata, &id1, &id2, &id3); + + in->ops.dsi->bus_unlock(in); + } else { + r = -ENODEV; + } + + mutex_unlock(&ddata->lock); + + if (r) + return r; + + return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x\n", id1, id2, id3); +} + +static ssize_t dsicm_store_ulps(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *in = ddata->in; + unsigned long t; + int r; + + r = kstrtoul(buf, 0, &t); + if (r) + return r; + + mutex_lock(&ddata->lock); + + if (ddata->enabled) { + in->ops.dsi->bus_lock(in); + + if (t) + r = dsicm_enter_ulps(ddata); + else + r = dsicm_wake_up(ddata); + + in->ops.dsi->bus_unlock(in); + } + + mutex_unlock(&ddata->lock); + + if (r) + return r; + + return count; +} + +static ssize_t dsicm_show_ulps(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + unsigned t; + + mutex_lock(&ddata->lock); + t = ddata->ulps_enabled; + mutex_unlock(&ddata->lock); + + return snprintf(buf, PAGE_SIZE, "%u\n", t); +} + +static ssize_t dsicm_store_ulps_timeout(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *in = ddata->in; + unsigned long t; + int r; + + r = kstrtoul(buf, 0, &t); + if (r) + return r; + + mutex_lock(&ddata->lock); + ddata->ulps_timeout = t; + + if (ddata->enabled) { + /* dsicm_wake_up will restart the timer */ + in->ops.dsi->bus_lock(in); + r = dsicm_wake_up(ddata); + in->ops.dsi->bus_unlock(in); + } + + mutex_unlock(&ddata->lock); + + if (r) + return r; + + return count; +} + +static ssize_t dsicm_show_ulps_timeout(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct platform_device *pdev = to_platform_device(dev); + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + unsigned t; + + mutex_lock(&ddata->lock); + t = ddata->ulps_timeout; + mutex_unlock(&ddata->lock); + + return snprintf(buf, PAGE_SIZE, "%u\n", t); +} + +static DEVICE_ATTR(num_dsi_errors, S_IRUGO, dsicm_num_errors_show, NULL); +static DEVICE_ATTR(hw_revision, S_IRUGO, dsicm_hw_revision_show, NULL); +static DEVICE_ATTR(ulps, S_IRUGO | S_IWUSR, + dsicm_show_ulps, dsicm_store_ulps); +static DEVICE_ATTR(ulps_timeout, S_IRUGO | S_IWUSR, + dsicm_show_ulps_timeout, dsicm_store_ulps_timeout); + +static struct attribute *dsicm_attrs[] = { + &dev_attr_num_dsi_errors.attr, + &dev_attr_hw_revision.attr, + &dev_attr_ulps.attr, + &dev_attr_ulps_timeout.attr, + NULL, +}; + +static struct attribute_group dsicm_attr_group = { + .attrs = dsicm_attrs, +}; + +static void dsicm_hw_reset(struct panel_drv_data *ddata) +{ + if (!gpio_is_valid(ddata->reset_gpio)) + return; + + gpio_set_value(ddata->reset_gpio, 1); + udelay(10); + /* reset the panel */ + gpio_set_value(ddata->reset_gpio, 0); + /* assert reset */ + udelay(10); + gpio_set_value(ddata->reset_gpio, 1); + /* wait after releasing reset */ + usleep_range(5000, 10000); +} + +static int dsicm_power_on(struct panel_drv_data *ddata) +{ + struct omap_dss_device *in = ddata->in; + u8 id1, id2, id3; + int r; + struct omap_dss_dsi_config dsi_config = { + .mode = OMAP_DSS_DSI_CMD_MODE, + .pixel_format = OMAP_DSS_DSI_FMT_RGB888, + .timings = &ddata->timings, + .hs_clk_min = 150000000, + .hs_clk_max = 300000000, + .lp_clk_min = 7000000, + .lp_clk_max = 10000000, + }; + + if (ddata->pin_config.num_pins > 0) { + r = in->ops.dsi->configure_pins(in, &ddata->pin_config); + if (r) { + dev_err(&ddata->pdev->dev, + "failed to configure DSI pins\n"); + goto err0; + } + } + + r = in->ops.dsi->set_config(in, &dsi_config); + if (r) { + dev_err(&ddata->pdev->dev, "failed to configure DSI\n"); + goto err0; + } + + r = in->ops.dsi->enable(in); + if (r) { + dev_err(&ddata->pdev->dev, "failed to enable DSI\n"); + goto err0; + } + + dsicm_hw_reset(ddata); + + in->ops.dsi->enable_hs(in, ddata->channel, false); + + r = dsicm_sleep_out(ddata); + if (r) + goto err; + + r = dsicm_get_id(ddata, &id1, &id2, &id3); + if (r) + goto err; + + r = dsicm_dcs_write_1(ddata, DCS_BRIGHTNESS, 0xff); + if (r) + goto err; + + r = dsicm_dcs_write_1(ddata, DCS_CTRL_DISPLAY, + (1<<2) | (1<<5)); /* BL | BCTRL */ + if (r) + goto err; + + r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_PIXEL_FORMAT, + MIPI_DCS_PIXEL_FMT_24BIT); + if (r) + goto err; + + r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_ON); + if (r) + goto err; + + r = _dsicm_enable_te(ddata, ddata->te_enabled); + if (r) + goto err; + + r = in->ops.dsi->enable_video_output(in, ddata->channel); + if (r) + goto err; + + ddata->enabled = 1; + + if (!ddata->intro_printed) { + dev_info(&ddata->pdev->dev, "panel revision %02x.%02x.%02x\n", + id1, id2, id3); + ddata->intro_printed = true; + } + + in->ops.dsi->enable_hs(in, ddata->channel, true); + + return 0; +err: + dev_err(&ddata->pdev->dev, "error while enabling panel, issuing HW reset\n"); + + dsicm_hw_reset(ddata); + + in->ops.dsi->disable(in, true, false); +err0: + return r; +} + +static void dsicm_power_off(struct panel_drv_data *ddata) +{ + struct omap_dss_device *in = ddata->in; + int r; + + in->ops.dsi->disable_video_output(in, ddata->channel); + + r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_DISPLAY_OFF); + if (!r) + r = dsicm_sleep_in(ddata); + + if (r) { + dev_err(&ddata->pdev->dev, + "error disabling panel, issuing HW reset\n"); + dsicm_hw_reset(ddata); + } + + in->ops.dsi->disable(in, true, false); + + ddata->enabled = 0; +} + +static int dsicm_panel_reset(struct panel_drv_data *ddata) +{ + dev_err(&ddata->pdev->dev, "performing LCD reset\n"); + + dsicm_power_off(ddata); + dsicm_hw_reset(ddata); + return dsicm_power_on(ddata); +} + +static int dsicm_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + struct device *dev = &ddata->pdev->dev; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dsi->connect(in, dssdev); + if (r) { + dev_err(dev, "Failed to connect to video source\n"); + return r; + } + + r = in->ops.dsi->request_vc(ddata->in, &ddata->channel); + if (r) { + dev_err(dev, "failed to get virtual channel\n"); + goto err_req_vc; + } + + r = in->ops.dsi->set_vc_id(ddata->in, ddata->channel, TCH); + if (r) { + dev_err(dev, "failed to set VC_ID\n"); + goto err_vc_id; + } + + return 0; + +err_vc_id: + in->ops.dsi->release_vc(ddata->in, ddata->channel); +err_req_vc: + in->ops.dsi->disconnect(in, dssdev); + return r; +} + +static void dsicm_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dsi->release_vc(in, ddata->channel); + in->ops.dsi->disconnect(in, dssdev); +} + +static int dsicm_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(&ddata->pdev->dev, "enable\n"); + + mutex_lock(&ddata->lock); + + if (!omapdss_device_is_connected(dssdev)) { + r = -ENODEV; + goto err; + } + + if (omapdss_device_is_enabled(dssdev)) { + r = 0; + goto err; + } + + in->ops.dsi->bus_lock(in); + + r = dsicm_power_on(ddata); + + in->ops.dsi->bus_unlock(in); + + if (r) + goto err; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + mutex_unlock(&ddata->lock); + + return 0; +err: + dev_dbg(&ddata->pdev->dev, "enable failed\n"); + mutex_unlock(&ddata->lock); + return r; +} + +static void dsicm_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(&ddata->pdev->dev, "disable\n"); + + mutex_lock(&ddata->lock); + + dsicm_cancel_ulps_work(ddata); + + in->ops.dsi->bus_lock(in); + + if (omapdss_device_is_enabled(dssdev)) { + r = dsicm_wake_up(ddata); + if (!r) + dsicm_power_off(ddata); + } + + in->ops.dsi->bus_unlock(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; + + mutex_unlock(&ddata->lock); +} + +static void dsicm_framedone_cb(int err, void *data) +{ + struct panel_drv_data *ddata = data; + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->pdev->dev, "framedone, err %d\n", err); + in->ops.dsi->bus_unlock(ddata->in); +} + +static irqreturn_t dsicm_te_isr(int irq, void *data) +{ + struct panel_drv_data *ddata = data; + struct omap_dss_device *in = ddata->in; + int old; + int r; + + old = atomic_cmpxchg(&ddata->do_update, 1, 0); + + if (old) { + cancel_delayed_work(&ddata->te_timeout_work); + + r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, + ddata); + if (r) + goto err; + } + + return IRQ_HANDLED; +err: + dev_err(&ddata->pdev->dev, "start update failed\n"); + in->ops.dsi->bus_unlock(in); + return IRQ_HANDLED; +} + +static void dsicm_te_timeout_work_callback(struct work_struct *work) +{ + struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, + te_timeout_work.work); + struct omap_dss_device *in = ddata->in; + + dev_err(&ddata->pdev->dev, "TE not received for 250ms!\n"); + + atomic_set(&ddata->do_update, 0); + in->ops.dsi->bus_unlock(in); +} + +static int dsicm_update(struct omap_dss_device *dssdev, + u16 x, u16 y, u16 w, u16 h) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(&ddata->pdev->dev, "update %d, %d, %d x %d\n", x, y, w, h); + + mutex_lock(&ddata->lock); + in->ops.dsi->bus_lock(in); + + r = dsicm_wake_up(ddata); + if (r) + goto err; + + if (!ddata->enabled) { + r = 0; + goto err; + } + + /* XXX no need to send this every frame, but dsi break if not done */ + r = dsicm_set_update_window(ddata, 0, 0, + dssdev->panel.timings.x_res, + dssdev->panel.timings.y_res); + if (r) + goto err; + + if (ddata->te_enabled && gpio_is_valid(ddata->ext_te_gpio)) { + schedule_delayed_work(&ddata->te_timeout_work, + msecs_to_jiffies(250)); + atomic_set(&ddata->do_update, 1); + } else { + r = in->ops.dsi->update(in, ddata->channel, dsicm_framedone_cb, + ddata); + if (r) + goto err; + } + + /* note: no bus_unlock here. unlock is in framedone_cb */ + mutex_unlock(&ddata->lock); + return 0; +err: + in->ops.dsi->bus_unlock(in); + mutex_unlock(&ddata->lock); + return r; +} + +static int dsicm_sync(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->pdev->dev, "sync\n"); + + mutex_lock(&ddata->lock); + in->ops.dsi->bus_lock(in); + in->ops.dsi->bus_unlock(in); + mutex_unlock(&ddata->lock); + + dev_dbg(&ddata->pdev->dev, "sync done\n"); + + return 0; +} + +static int _dsicm_enable_te(struct panel_drv_data *ddata, bool enable) +{ + struct omap_dss_device *in = ddata->in; + int r; + + if (enable) + r = dsicm_dcs_write_1(ddata, MIPI_DCS_SET_TEAR_ON, 0); + else + r = dsicm_dcs_write_0(ddata, MIPI_DCS_SET_TEAR_OFF); + + if (!gpio_is_valid(ddata->ext_te_gpio)) + in->ops.dsi->enable_te(in, enable); + + /* possible panel bug */ + msleep(100); + + return r; +} + +static int dsicm_enable_te(struct omap_dss_device *dssdev, bool enable) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + mutex_lock(&ddata->lock); + + if (ddata->te_enabled == enable) + goto end; + + in->ops.dsi->bus_lock(in); + + if (ddata->enabled) { + r = dsicm_wake_up(ddata); + if (r) + goto err; + + r = _dsicm_enable_te(ddata, enable); + if (r) + goto err; + } + + ddata->te_enabled = enable; + + in->ops.dsi->bus_unlock(in); +end: + mutex_unlock(&ddata->lock); + + return 0; +err: + in->ops.dsi->bus_unlock(in); + mutex_unlock(&ddata->lock); + + return r; +} + +static int dsicm_get_te(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + int r; + + mutex_lock(&ddata->lock); + r = ddata->te_enabled; + mutex_unlock(&ddata->lock); + + return r; +} + +static int dsicm_memory_read(struct omap_dss_device *dssdev, + void *buf, size_t size, + u16 x, u16 y, u16 w, u16 h) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + int first = 1; + int plen; + unsigned buf_used = 0; + + if (size < w * h * 3) + return -ENOMEM; + + mutex_lock(&ddata->lock); + + if (!ddata->enabled) { + r = -ENODEV; + goto err1; + } + + size = min(w * h * 3, + dssdev->panel.timings.x_res * + dssdev->panel.timings.y_res * 3); + + in->ops.dsi->bus_lock(in); + + r = dsicm_wake_up(ddata); + if (r) + goto err2; + + /* plen 1 or 2 goes into short packet. until checksum error is fixed, + * use short packets. plen 32 works, but bigger packets seem to cause + * an error. */ + if (size % 2) + plen = 1; + else + plen = 2; + + dsicm_set_update_window(ddata, x, y, w, h); + + r = in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, plen); + if (r) + goto err2; + + while (buf_used < size) { + u8 dcs_cmd = first ? 0x2e : 0x3e; + first = 0; + + r = in->ops.dsi->dcs_read(in, ddata->channel, dcs_cmd, + buf + buf_used, size - buf_used); + + if (r < 0) { + dev_err(dssdev->dev, "read error\n"); + goto err3; + } + + buf_used += r; + + if (r < plen) { + dev_err(&ddata->pdev->dev, "short read\n"); + break; + } + + if (signal_pending(current)) { + dev_err(&ddata->pdev->dev, "signal pending, " + "aborting memory read\n"); + r = -ERESTARTSYS; + goto err3; + } + } + + r = buf_used; + +err3: + in->ops.dsi->set_max_rx_packet_size(in, ddata->channel, 1); +err2: + in->ops.dsi->bus_unlock(in); +err1: + mutex_unlock(&ddata->lock); + return r; +} + +static void dsicm_ulps_work(struct work_struct *work) +{ + struct panel_drv_data *ddata = container_of(work, struct panel_drv_data, + ulps_work.work); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + mutex_lock(&ddata->lock); + + if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE || !ddata->enabled) { + mutex_unlock(&ddata->lock); + return; + } + + in->ops.dsi->bus_lock(in); + + dsicm_enter_ulps(ddata); + + in->ops.dsi->bus_unlock(in); + mutex_unlock(&ddata->lock); +} + +static struct omap_dss_driver dsicm_ops = { + .connect = dsicm_connect, + .disconnect = dsicm_disconnect, + + .enable = dsicm_enable, + .disable = dsicm_disable, + + .update = dsicm_update, + .sync = dsicm_sync, + + .get_resolution = dsicm_get_resolution, + .get_recommended_bpp = omapdss_default_get_recommended_bpp, + + .enable_te = dsicm_enable_te, + .get_te = dsicm_get_te, + + .memory_read = dsicm_memory_read, +}; + +static int dsicm_probe_pdata(struct platform_device *pdev) +{ + const struct panel_dsicm_platform_data *pdata; + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&pdev->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "failed to find video source\n"); + return -EPROBE_DEFER; + } + ddata->in = in; + + ddata->reset_gpio = pdata->reset_gpio; + + if (pdata->use_ext_te) + ddata->ext_te_gpio = pdata->ext_te_gpio; + else + ddata->ext_te_gpio = -1; + + ddata->ulps_timeout = pdata->ulps_timeout; + + ddata->use_dsi_backlight = pdata->use_dsi_backlight; + + ddata->pin_config = pdata->pin_config; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int dsicm_probe_of(struct platform_device *pdev) +{ + struct device_node *node = pdev->dev.of_node; + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *in; + int gpio; + + gpio = of_get_named_gpio(node, "reset-gpios", 0); + if (!gpio_is_valid(gpio)) { + dev_err(&pdev->dev, "failed to parse reset gpio\n"); + return gpio; + } + ddata->reset_gpio = gpio; + + gpio = of_get_named_gpio(node, "te-gpios", 0); + if (gpio_is_valid(gpio) || gpio == -ENOENT) { + ddata->ext_te_gpio = gpio; + } else { + dev_err(&pdev->dev, "failed to parse TE gpio\n"); + return gpio; + } + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + /* TODO: ulps, backlight */ + + return 0; +} + +static int dsicm_probe(struct platform_device *pdev) +{ + struct backlight_properties props; + struct panel_drv_data *ddata; + struct backlight_device *bldev = NULL; + struct device *dev = &pdev->dev; + struct omap_dss_device *dssdev; + int r; + + dev_dbg(dev, "probe\n"); + + ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL); + if (!ddata) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + ddata->pdev = pdev; + + if (dev_get_platdata(dev)) { + r = dsicm_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = dsicm_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->timings.x_res = 864; + ddata->timings.y_res = 480; + ddata->timings.pixelclock = 864 * 480 * 60; + + dssdev = &ddata->dssdev; + dssdev->dev = dev; + dssdev->driver = &dsicm_ops; + dssdev->panel.timings = ddata->timings; + dssdev->type = OMAP_DISPLAY_TYPE_DSI; + dssdev->owner = THIS_MODULE; + + dssdev->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888; + dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | + OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(dev, "Failed to register panel\n"); + goto err_reg; + } + + mutex_init(&ddata->lock); + + atomic_set(&ddata->do_update, 0); + + if (gpio_is_valid(ddata->reset_gpio)) { + r = devm_gpio_request_one(dev, ddata->reset_gpio, + GPIOF_OUT_INIT_LOW, "taal rst"); + if (r) { + dev_err(dev, "failed to request reset gpio\n"); + return r; + } + } + + if (gpio_is_valid(ddata->ext_te_gpio)) { + r = devm_gpio_request_one(dev, ddata->ext_te_gpio, + GPIOF_IN, "taal irq"); + if (r) { + dev_err(dev, "GPIO request failed\n"); + return r; + } + + r = devm_request_irq(dev, gpio_to_irq(ddata->ext_te_gpio), + dsicm_te_isr, + IRQF_TRIGGER_RISING, + "taal vsync", ddata); + + if (r) { + dev_err(dev, "IRQ request failed\n"); + return r; + } + + INIT_DEFERRABLE_WORK(&ddata->te_timeout_work, + dsicm_te_timeout_work_callback); + + dev_dbg(dev, "Using GPIO TE\n"); + } + + ddata->workqueue = create_singlethread_workqueue("dsicm_wq"); + if (ddata->workqueue == NULL) { + dev_err(dev, "can't create workqueue\n"); + return -ENOMEM; + } + INIT_DELAYED_WORK(&ddata->ulps_work, dsicm_ulps_work); + + dsicm_hw_reset(ddata); + + if (ddata->use_dsi_backlight) { + memset(&props, 0, sizeof(struct backlight_properties)); + props.max_brightness = 255; + + props.type = BACKLIGHT_RAW; + bldev = backlight_device_register(dev_name(dev), + dev, ddata, &dsicm_bl_ops, &props); + if (IS_ERR(bldev)) { + r = PTR_ERR(bldev); + goto err_bl; + } + + ddata->bldev = bldev; + + bldev->props.fb_blank = FB_BLANK_UNBLANK; + bldev->props.power = FB_BLANK_UNBLANK; + bldev->props.brightness = 255; + + dsicm_bl_update_status(bldev); + } + + r = sysfs_create_group(&dev->kobj, &dsicm_attr_group); + if (r) { + dev_err(dev, "failed to create sysfs files\n"); + goto err_sysfs_create; + } + + return 0; + +err_sysfs_create: + if (bldev != NULL) + backlight_device_unregister(bldev); +err_bl: + destroy_workqueue(ddata->workqueue); +err_reg: + return r; +} + +static int __exit dsicm_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct backlight_device *bldev; + + dev_dbg(&pdev->dev, "remove\n"); + + omapdss_unregister_display(dssdev); + + dsicm_disable(dssdev); + dsicm_disconnect(dssdev); + + sysfs_remove_group(&pdev->dev.kobj, &dsicm_attr_group); + + bldev = ddata->bldev; + if (bldev != NULL) { + bldev->props.power = FB_BLANK_POWERDOWN; + dsicm_bl_update_status(bldev); + backlight_device_unregister(bldev); + } + + omap_dss_put_device(ddata->in); + + dsicm_cancel_ulps_work(ddata); + destroy_workqueue(ddata->workqueue); + + /* reset, to be sure that the panel is in a valid state */ + dsicm_hw_reset(ddata); + + return 0; +} + +static const struct of_device_id dsicm_of_match[] = { + { .compatible = "omapdss,panel-dsi-cm", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, dsicm_of_match); + +static struct platform_driver dsicm_driver = { + .probe = dsicm_probe, + .remove = __exit_p(dsicm_remove), + .driver = { + .name = "panel-dsi-cm", + .of_match_table = dsicm_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(dsicm_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("Generic DSI Command Mode Panel Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c new file mode 100644 index 000000000000..18eb60e9c9ec --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-lgphilips-lb035q02.c @@ -0,0 +1,404 @@ +/* + * LG.Philips LB035Q02 LCD Panel driver + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * Based on a driver by: Steve Sakoman <steve@sakoman.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/mutex.h> +#include <linux/gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +static struct omap_video_timings lb035q02_timings = { + .x_res = 320, + .y_res = 240, + + .pixelclock = 6500000, + + .hsw = 2, + .hfp = 20, + .hbp = 68, + + .vsw = 2, + .vfp = 4, + .vbp = 18, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, +}; + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct spi_device *spi; + + int data_lines; + + struct omap_video_timings videomode; + + /* used for non-DT boot, to be removed */ + int backlight_gpio; + + struct gpio_desc *enable_gpio; +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int lb035q02_write_reg(struct spi_device *spi, u8 reg, u16 val) +{ + struct spi_message msg; + struct spi_transfer index_xfer = { + .len = 3, + .cs_change = 1, + }; + struct spi_transfer value_xfer = { + .len = 3, + }; + u8 buffer[16]; + + spi_message_init(&msg); + + /* register index */ + buffer[0] = 0x70; + buffer[1] = 0x00; + buffer[2] = reg & 0x7f; + index_xfer.tx_buf = buffer; + spi_message_add_tail(&index_xfer, &msg); + + /* register value */ + buffer[4] = 0x72; + buffer[5] = val >> 8; + buffer[6] = val; + value_xfer.tx_buf = buffer + 4; + spi_message_add_tail(&value_xfer, &msg); + + return spi_sync(spi, &msg); +} + +static void init_lb035q02_panel(struct spi_device *spi) +{ + /* Init sequence from page 28 of the lb035q02 spec */ + lb035q02_write_reg(spi, 0x01, 0x6300); + lb035q02_write_reg(spi, 0x02, 0x0200); + lb035q02_write_reg(spi, 0x03, 0x0177); + lb035q02_write_reg(spi, 0x04, 0x04c7); + lb035q02_write_reg(spi, 0x05, 0xffc0); + lb035q02_write_reg(spi, 0x06, 0xe806); + lb035q02_write_reg(spi, 0x0a, 0x4008); + lb035q02_write_reg(spi, 0x0b, 0x0000); + lb035q02_write_reg(spi, 0x0d, 0x0030); + lb035q02_write_reg(spi, 0x0e, 0x2800); + lb035q02_write_reg(spi, 0x0f, 0x0000); + lb035q02_write_reg(spi, 0x16, 0x9f80); + lb035q02_write_reg(spi, 0x17, 0x0a0f); + lb035q02_write_reg(spi, 0x1e, 0x00c1); + lb035q02_write_reg(spi, 0x30, 0x0300); + lb035q02_write_reg(spi, 0x31, 0x0007); + lb035q02_write_reg(spi, 0x32, 0x0000); + lb035q02_write_reg(spi, 0x33, 0x0000); + lb035q02_write_reg(spi, 0x34, 0x0707); + lb035q02_write_reg(spi, 0x35, 0x0004); + lb035q02_write_reg(spi, 0x36, 0x0302); + lb035q02_write_reg(spi, 0x37, 0x0202); + lb035q02_write_reg(spi, 0x3a, 0x0a0d); + lb035q02_write_reg(spi, 0x3b, 0x0806); +} + +static int lb035q02_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + init_lb035q02_panel(ddata->spi); + + return 0; +} + +static void lb035q02_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int lb035q02_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + if (ddata->enable_gpio) + gpiod_set_value_cansleep(ddata->enable_gpio, 1); + + if (gpio_is_valid(ddata->backlight_gpio)) + gpio_set_value_cansleep(ddata->backlight_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void lb035q02_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (ddata->enable_gpio) + gpiod_set_value_cansleep(ddata->enable_gpio, 0); + + if (gpio_is_valid(ddata->backlight_gpio)) + gpio_set_value_cansleep(ddata->backlight_gpio, 0); + + in->ops.dpi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void lb035q02_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void lb035q02_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int lb035q02_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver lb035q02_ops = { + .connect = lb035q02_connect, + .disconnect = lb035q02_disconnect, + + .enable = lb035q02_enable, + .disable = lb035q02_disable, + + .set_timings = lb035q02_set_timings, + .get_timings = lb035q02_get_timings, + .check_timings = lb035q02_check_timings, + + .get_resolution = omapdss_default_get_resolution, +}; + +static int lb035q02_probe_pdata(struct spi_device *spi) +{ + const struct panel_lb035q02_platform_data *pdata; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev, *in; + int r; + + pdata = dev_get_platdata(&spi->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&spi->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + r = devm_gpio_request_one(&spi->dev, pdata->enable_gpio, + GPIOF_OUT_INIT_LOW, "panel enable"); + if (r) + goto err_gpio; + + ddata->enable_gpio = gpio_to_desc(pdata->enable_gpio); + + ddata->backlight_gpio = pdata->backlight_gpio; + + return 0; +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int lb035q02_probe_of(struct spi_device *spi) +{ + struct device_node *node = spi->dev.of_node; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *in; + struct gpio_desc *gpio; + + gpio = devm_gpiod_get(&spi->dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(gpio)) { + dev_err(&spi->dev, "failed to parse enable gpio\n"); + return PTR_ERR(gpio); + } + + ddata->enable_gpio = gpio; + + ddata->backlight_gpio = -ENOENT; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&spi->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int lb035q02_panel_spi_probe(struct spi_device *spi) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + dev_set_drvdata(&spi->dev, ddata); + + ddata->spi = spi; + + if (dev_get_platdata(&spi->dev)) { + r = lb035q02_probe_pdata(spi); + if (r) + return r; + } else if (spi->dev.of_node) { + r = lb035q02_probe_of(spi); + if (r) + return r; + } else { + return -ENODEV; + } + + if (gpio_is_valid(ddata->backlight_gpio)) { + r = devm_gpio_request_one(&spi->dev, ddata->backlight_gpio, + GPIOF_OUT_INIT_LOW, "panel backlight"); + if (r) + goto err_gpio; + } + + ddata->videomode = lb035q02_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &spi->dev; + dssdev->driver = &lb035q02_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + dssdev->phy.dpi.data_lines = ddata->data_lines; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&spi->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int lb035q02_panel_spi_remove(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(dssdev); + + lb035q02_disable(dssdev); + lb035q02_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id lb035q02_of_match[] = { + { .compatible = "omapdss,lgphilips,lb035q02", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, lb035q02_of_match); + +static struct spi_driver lb035q02_spi_driver = { + .probe = lb035q02_panel_spi_probe, + .remove = lb035q02_panel_spi_remove, + .driver = { + .name = "panel_lgphilips_lb035q02", + .of_match_table = lb035q02_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_spi_driver(lb035q02_spi_driver); + +MODULE_ALIAS("spi:lgphilips,lb035q02"); +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("LG.Philips LB035Q02 LCD Panel driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c new file mode 100644 index 000000000000..8a928c9a2fc9 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-nec-nl8048hl11.c @@ -0,0 +1,437 @@ +/* + * NEC NL8048HL11 Panel driver + * + * Copyright (C) 2010 Texas Instruments Inc. + * Author: Erik Gilling <konkers@android.com> + * Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/fb.h> +#include <linux/gpio.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct omap_video_timings videomode; + + int data_lines; + + int res_gpio; + int qvga_gpio; + + struct spi_device *spi; +}; + +#define LCD_XRES 800 +#define LCD_YRES 480 +/* + * NEC PIX Clock Ratings + * MIN:21.8MHz TYP:23.8MHz MAX:25.7MHz + */ +#define LCD_PIXEL_CLOCK 23800000 + +static const struct { + unsigned char addr; + unsigned char dat; +} nec_8048_init_seq[] = { + { 3, 0x01 }, { 0, 0x00 }, { 1, 0x01 }, { 4, 0x00 }, { 5, 0x14 }, + { 6, 0x24 }, { 16, 0xD7 }, { 17, 0x00 }, { 18, 0x00 }, { 19, 0x55 }, + { 20, 0x01 }, { 21, 0x70 }, { 22, 0x1E }, { 23, 0x25 }, { 24, 0x25 }, + { 25, 0x02 }, { 26, 0x02 }, { 27, 0xA0 }, { 32, 0x2F }, { 33, 0x0F }, + { 34, 0x0F }, { 35, 0x0F }, { 36, 0x0F }, { 37, 0x0F }, { 38, 0x0F }, + { 39, 0x00 }, { 40, 0x02 }, { 41, 0x02 }, { 42, 0x02 }, { 43, 0x0F }, + { 44, 0x0F }, { 45, 0x0F }, { 46, 0x0F }, { 47, 0x0F }, { 48, 0x0F }, + { 49, 0x0F }, { 50, 0x00 }, { 51, 0x02 }, { 52, 0x02 }, { 53, 0x02 }, + { 80, 0x0C }, { 83, 0x42 }, { 84, 0x42 }, { 85, 0x41 }, { 86, 0x14 }, + { 89, 0x88 }, { 90, 0x01 }, { 91, 0x00 }, { 92, 0x02 }, { 93, 0x0C }, + { 94, 0x1C }, { 95, 0x27 }, { 98, 0x49 }, { 99, 0x27 }, { 102, 0x76 }, + { 103, 0x27 }, { 112, 0x01 }, { 113, 0x0E }, { 114, 0x02 }, + { 115, 0x0C }, { 118, 0x0C }, { 121, 0x30 }, { 130, 0x00 }, + { 131, 0x00 }, { 132, 0xFC }, { 134, 0x00 }, { 136, 0x00 }, + { 138, 0x00 }, { 139, 0x00 }, { 140, 0x00 }, { 141, 0xFC }, + { 143, 0x00 }, { 145, 0x00 }, { 147, 0x00 }, { 148, 0x00 }, + { 149, 0x00 }, { 150, 0xFC }, { 152, 0x00 }, { 154, 0x00 }, + { 156, 0x00 }, { 157, 0x00 }, { 2, 0x00 }, +}; + +static const struct omap_video_timings nec_8048_panel_timings = { + .x_res = LCD_XRES, + .y_res = LCD_YRES, + .pixelclock = LCD_PIXEL_CLOCK, + .hfp = 6, + .hsw = 1, + .hbp = 4, + .vfp = 3, + .vsw = 1, + .vbp = 4, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int nec_8048_spi_send(struct spi_device *spi, unsigned char reg_addr, + unsigned char reg_data) +{ + int ret = 0; + unsigned int cmd = 0, data = 0; + + cmd = 0x0000 | reg_addr; /* register address write */ + data = 0x0100 | reg_data; /* register data write */ + data = (cmd << 16) | data; + + ret = spi_write(spi, (unsigned char *)&data, 4); + if (ret) + pr_err("error in spi_write %x\n", data); + + return ret; +} + +static int init_nec_8048_wvga_lcd(struct spi_device *spi) +{ + unsigned int i; + /* Initialization Sequence */ + /* nec_8048_spi_send(spi, REG, VAL) */ + for (i = 0; i < (ARRAY_SIZE(nec_8048_init_seq) - 1); i++) + nec_8048_spi_send(spi, nec_8048_init_seq[i].addr, + nec_8048_init_seq[i].dat); + udelay(20); + nec_8048_spi_send(spi, nec_8048_init_seq[i].addr, + nec_8048_init_seq[i].dat); + return 0; +} + +static int nec_8048_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void nec_8048_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int nec_8048_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + if (gpio_is_valid(ddata->res_gpio)) + gpio_set_value_cansleep(ddata->res_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void nec_8048_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (gpio_is_valid(ddata->res_gpio)) + gpio_set_value_cansleep(ddata->res_gpio, 0); + + in->ops.dpi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void nec_8048_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void nec_8048_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int nec_8048_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver nec_8048_ops = { + .connect = nec_8048_connect, + .disconnect = nec_8048_disconnect, + + .enable = nec_8048_enable, + .disable = nec_8048_disable, + + .set_timings = nec_8048_set_timings, + .get_timings = nec_8048_get_timings, + .check_timings = nec_8048_check_timings, + + .get_resolution = omapdss_default_get_resolution, +}; + + +static int nec_8048_probe_pdata(struct spi_device *spi) +{ + const struct panel_nec_nl8048hl11_platform_data *pdata; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&spi->dev); + + ddata->qvga_gpio = pdata->qvga_gpio; + ddata->res_gpio = pdata->res_gpio; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&spi->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int nec_8048_probe_of(struct spi_device *spi) +{ + struct device_node *node = spi->dev.of_node; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *in; + int gpio; + + gpio = of_get_named_gpio(node, "reset-gpios", 0); + if (!gpio_is_valid(gpio)) { + dev_err(&spi->dev, "failed to parse enable gpio\n"); + return gpio; + } + ddata->res_gpio = gpio; + + /* XXX the panel spec doesn't mention any QVGA pin?? */ + ddata->qvga_gpio = -ENOENT; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&spi->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int nec_8048_probe(struct spi_device *spi) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + dev_dbg(&spi->dev, "%s\n", __func__); + + spi->mode = SPI_MODE_0; + spi->bits_per_word = 32; + + r = spi_setup(spi); + if (r < 0) { + dev_err(&spi->dev, "spi_setup failed: %d\n", r); + return r; + } + + init_nec_8048_wvga_lcd(spi); + + ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + dev_set_drvdata(&spi->dev, ddata); + + ddata->spi = spi; + + if (dev_get_platdata(&spi->dev)) { + r = nec_8048_probe_pdata(spi); + if (r) + return r; + } else if (spi->dev.of_node) { + r = nec_8048_probe_of(spi); + if (r) + return r; + } else { + return -ENODEV; + } + + if (gpio_is_valid(ddata->qvga_gpio)) { + r = devm_gpio_request_one(&spi->dev, ddata->qvga_gpio, + GPIOF_OUT_INIT_HIGH, "lcd QVGA"); + if (r) + goto err_gpio; + } + + if (gpio_is_valid(ddata->res_gpio)) { + r = devm_gpio_request_one(&spi->dev, ddata->res_gpio, + GPIOF_OUT_INIT_LOW, "lcd RES"); + if (r) + goto err_gpio; + } + + ddata->videomode = nec_8048_panel_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &spi->dev; + dssdev->driver = &nec_8048_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&spi->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int nec_8048_remove(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->spi->dev, "%s\n", __func__); + + omapdss_unregister_display(dssdev); + + nec_8048_disable(dssdev); + nec_8048_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int nec_8048_suspend(struct device *dev) +{ + struct spi_device *spi = to_spi_device(dev); + + nec_8048_spi_send(spi, 2, 0x01); + mdelay(40); + + return 0; +} + +static int nec_8048_resume(struct device *dev) +{ + struct spi_device *spi = to_spi_device(dev); + + /* reinitialize the panel */ + spi_setup(spi); + nec_8048_spi_send(spi, 2, 0x00); + init_nec_8048_wvga_lcd(spi); + + return 0; +} +static SIMPLE_DEV_PM_OPS(nec_8048_pm_ops, nec_8048_suspend, + nec_8048_resume); +#define NEC_8048_PM_OPS (&nec_8048_pm_ops) +#else +#define NEC_8048_PM_OPS NULL +#endif + +static const struct of_device_id nec_8048_of_match[] = { + { .compatible = "omapdss,nec,nl8048hl11", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, nec_8048_of_match); + +static struct spi_driver nec_8048_driver = { + .driver = { + .name = "panel-nec-nl8048hl11", + .pm = NEC_8048_PM_OPS, + .of_match_table = nec_8048_of_match, + .suppress_bind_attrs = true, + }, + .probe = nec_8048_probe, + .remove = nec_8048_remove, +}; + +module_spi_driver(nec_8048_driver); + +MODULE_ALIAS("spi:nec,nl8048hl11"); +MODULE_AUTHOR("Erik Gilling <konkers@android.com>"); +MODULE_DESCRIPTION("NEC-NL8048HL11 Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c new file mode 100644 index 000000000000..abfd1f6e3327 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-sharp-ls037v7dw01.c @@ -0,0 +1,415 @@ +/* + * LCD panel driver for Sharp LS037V7DW01 + * + * Copyright (C) 2013 Texas Instruments + * Author: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + */ + +#include <linux/delay.h> +#include <linux/gpio.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_gpio.h> +#include <linux/platform_device.h> +#include <linux/slab.h> +#include <linux/regulator/consumer.h> +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + struct regulator *vcc; + + int data_lines; + + struct omap_video_timings videomode; + + struct gpio_desc *resb_gpio; /* low = reset active min 20 us */ + struct gpio_desc *ini_gpio; /* high = power on */ + struct gpio_desc *mo_gpio; /* low = 480x640, high = 240x320 */ + struct gpio_desc *lr_gpio; /* high = conventional horizontal scanning */ + struct gpio_desc *ud_gpio; /* high = conventional vertical scanning */ +}; + +static const struct omap_video_timings sharp_ls_timings = { + .x_res = 480, + .y_res = 640, + + .pixelclock = 19200000, + + .hsw = 2, + .hfp = 1, + .hbp = 28, + + .vsw = 1, + .vfp = 1, + .vbp = 1, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int sharp_ls_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void sharp_ls_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int sharp_ls_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + if (ddata->vcc) { + r = regulator_enable(ddata->vcc); + if (r != 0) + return r; + } + + r = in->ops.dpi->enable(in); + if (r) { + regulator_disable(ddata->vcc); + return r; + } + + /* wait couple of vsyncs until enabling the LCD */ + msleep(50); + + if (ddata->resb_gpio) + gpiod_set_value_cansleep(ddata->resb_gpio, 1); + + if (ddata->ini_gpio) + gpiod_set_value_cansleep(ddata->ini_gpio, 1); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void sharp_ls_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + if (ddata->ini_gpio) + gpiod_set_value_cansleep(ddata->ini_gpio, 0); + + if (ddata->resb_gpio) + gpiod_set_value_cansleep(ddata->resb_gpio, 0); + + /* wait at least 5 vsyncs after disabling the LCD */ + + msleep(100); + + in->ops.dpi->disable(in); + + if (ddata->vcc) + regulator_disable(ddata->vcc); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void sharp_ls_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void sharp_ls_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int sharp_ls_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver sharp_ls_ops = { + .connect = sharp_ls_connect, + .disconnect = sharp_ls_disconnect, + + .enable = sharp_ls_enable, + .disable = sharp_ls_disable, + + .set_timings = sharp_ls_set_timings, + .get_timings = sharp_ls_get_timings, + .check_timings = sharp_ls_check_timings, + + .get_resolution = omapdss_default_get_resolution, +}; + +static int sharp_ls_get_gpio(struct device *dev, int gpio, unsigned long flags, + char *desc, struct gpio_desc **gpiod) +{ + struct gpio_desc *gd; + int r; + + *gpiod = NULL; + + r = devm_gpio_request_one(dev, gpio, flags, desc); + if (r) + return r == -ENOENT ? 0 : r; + + gd = gpio_to_desc(gpio); + if (IS_ERR(gd)) + return PTR_ERR(gd) == -ENOENT ? 0 : PTR_ERR(gd); + + *gpiod = gd; + return 0; +} + +static int sharp_ls_probe_pdata(struct platform_device *pdev) +{ + const struct panel_sharp_ls037v7dw01_platform_data *pdata; + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev, *in; + int r; + + pdata = dev_get_platdata(&pdev->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&pdev->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + r = sharp_ls_get_gpio(&pdev->dev, pdata->mo_gpio, GPIOF_OUT_INIT_LOW, + "lcd MO", &ddata->mo_gpio); + if (r) + return r; + r = sharp_ls_get_gpio(&pdev->dev, pdata->lr_gpio, GPIOF_OUT_INIT_HIGH, + "lcd LR", &ddata->lr_gpio); + if (r) + return r; + r = sharp_ls_get_gpio(&pdev->dev, pdata->ud_gpio, GPIOF_OUT_INIT_HIGH, + "lcd UD", &ddata->ud_gpio); + if (r) + return r; + r = sharp_ls_get_gpio(&pdev->dev, pdata->resb_gpio, GPIOF_OUT_INIT_LOW, + "lcd RESB", &ddata->resb_gpio); + if (r) + return r; + r = sharp_ls_get_gpio(&pdev->dev, pdata->ini_gpio, GPIOF_OUT_INIT_LOW, + "lcd INI", &ddata->ini_gpio); + if (r) + return r; + + return 0; +} + +static int sharp_ls_get_gpio_of(struct device *dev, int index, int val, + const char *desc, struct gpio_desc **gpiod) +{ + struct gpio_desc *gd; + + *gpiod = NULL; + + gd = devm_gpiod_get_index(dev, desc, index, GPIOD_OUT_LOW); + if (IS_ERR(gd)) + return PTR_ERR(gd); + + *gpiod = gd; + return 0; +} + +static int sharp_ls_probe_of(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct device_node *node = pdev->dev.of_node; + struct omap_dss_device *in; + int r; + + ddata->vcc = devm_regulator_get(&pdev->dev, "envdd"); + if (IS_ERR(ddata->vcc)) { + dev_err(&pdev->dev, "failed to get regulator\n"); + return PTR_ERR(ddata->vcc); + } + + /* lcd INI */ + r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "enable", &ddata->ini_gpio); + if (r) + return r; + + /* lcd RESB */ + r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "reset", &ddata->resb_gpio); + if (r) + return r; + + /* lcd MO */ + r = sharp_ls_get_gpio_of(&pdev->dev, 0, 0, "mode", &ddata->mo_gpio); + if (r) + return r; + + /* lcd LR */ + r = sharp_ls_get_gpio_of(&pdev->dev, 1, 1, "mode", &ddata->lr_gpio); + if (r) + return r; + + /* lcd UD */ + r = sharp_ls_get_gpio_of(&pdev->dev, 2, 1, "mode", &ddata->ud_gpio); + if (r) + return r; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&pdev->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int sharp_ls_probe(struct platform_device *pdev) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + ddata = devm_kzalloc(&pdev->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + platform_set_drvdata(pdev, ddata); + + if (dev_get_platdata(&pdev->dev)) { + r = sharp_ls_probe_pdata(pdev); + if (r) + return r; + } else if (pdev->dev.of_node) { + r = sharp_ls_probe_of(pdev); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->videomode = sharp_ls_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &pdev->dev; + dssdev->driver = &sharp_ls_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + dssdev->phy.dpi.data_lines = ddata->data_lines; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&pdev->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: + omap_dss_put_device(ddata->in); + return r; +} + +static int __exit sharp_ls_remove(struct platform_device *pdev) +{ + struct panel_drv_data *ddata = platform_get_drvdata(pdev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + omapdss_unregister_display(dssdev); + + sharp_ls_disable(dssdev); + sharp_ls_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id sharp_ls_of_match[] = { + { .compatible = "omapdss,sharp,ls037v7dw01", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, sharp_ls_of_match); + +static struct platform_driver sharp_ls_driver = { + .probe = sharp_ls_probe, + .remove = __exit_p(sharp_ls_remove), + .driver = { + .name = "panel-sharp-ls037v7dw01", + .of_match_table = sharp_ls_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_platform_driver(sharp_ls_driver); + +MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@ti.com>"); +MODULE_DESCRIPTION("Sharp LS037V7DW01 Panel Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c new file mode 100644 index 000000000000..31efcca801bd --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-sony-acx565akm.c @@ -0,0 +1,917 @@ +/* + * Sony ACX565AKM LCD Panel driver + * + * Copyright (C) 2010 Nokia Corporation + * + * Original Driver Author: Imre Deak <imre.deak@nokia.com> + * Based on panel-generic.c by Tomi Valkeinen <tomi.valkeinen@nokia.com> + * Adapted to new DSS2 framework: Roger Quadros <roger.quadros@nokia.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/jiffies.h> +#include <linux/sched.h> +#include <linux/backlight.h> +#include <linux/fb.h> +#include <linux/gpio.h> +#include <linux/of.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +#define MIPID_CMD_READ_DISP_ID 0x04 +#define MIPID_CMD_READ_RED 0x06 +#define MIPID_CMD_READ_GREEN 0x07 +#define MIPID_CMD_READ_BLUE 0x08 +#define MIPID_CMD_READ_DISP_STATUS 0x09 +#define MIPID_CMD_RDDSDR 0x0F +#define MIPID_CMD_SLEEP_IN 0x10 +#define MIPID_CMD_SLEEP_OUT 0x11 +#define MIPID_CMD_DISP_OFF 0x28 +#define MIPID_CMD_DISP_ON 0x29 +#define MIPID_CMD_WRITE_DISP_BRIGHTNESS 0x51 +#define MIPID_CMD_READ_DISP_BRIGHTNESS 0x52 +#define MIPID_CMD_WRITE_CTRL_DISP 0x53 + +#define CTRL_DISP_BRIGHTNESS_CTRL_ON (1 << 5) +#define CTRL_DISP_AMBIENT_LIGHT_CTRL_ON (1 << 4) +#define CTRL_DISP_BACKLIGHT_ON (1 << 2) +#define CTRL_DISP_AUTO_BRIGHTNESS_ON (1 << 1) + +#define MIPID_CMD_READ_CTRL_DISP 0x54 +#define MIPID_CMD_WRITE_CABC 0x55 +#define MIPID_CMD_READ_CABC 0x56 + +#define MIPID_VER_LPH8923 3 +#define MIPID_VER_LS041Y3 4 +#define MIPID_VER_L4F00311 8 +#define MIPID_VER_ACX565AKM 9 + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + int reset_gpio; + int datapairs; + + struct omap_video_timings videomode; + + char *name; + int enabled; + int model; + int revision; + u8 display_id[3]; + unsigned has_bc:1; + unsigned has_cabc:1; + unsigned cabc_mode; + unsigned long hw_guard_end; /* next value of jiffies + when we can issue the + next sleep in/out command */ + unsigned long hw_guard_wait; /* max guard time in jiffies */ + + struct spi_device *spi; + struct mutex mutex; + + struct backlight_device *bl_dev; +}; + +static const struct omap_video_timings acx565akm_panel_timings = { + .x_res = 800, + .y_res = 480, + .pixelclock = 24000000, + .hfp = 28, + .hsw = 4, + .hbp = 24, + .vfp = 3, + .vsw = 3, + .vbp = 4, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + + .data_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static void acx565akm_transfer(struct panel_drv_data *ddata, int cmd, + const u8 *wbuf, int wlen, u8 *rbuf, int rlen) +{ + struct spi_message m; + struct spi_transfer *x, xfer[5]; + int r; + + BUG_ON(ddata->spi == NULL); + + spi_message_init(&m); + + memset(xfer, 0, sizeof(xfer)); + x = &xfer[0]; + + cmd &= 0xff; + x->tx_buf = &cmd; + x->bits_per_word = 9; + x->len = 2; + + if (rlen > 1 && wlen == 0) { + /* + * Between the command and the response data there is a + * dummy clock cycle. Add an extra bit after the command + * word to account for this. + */ + x->bits_per_word = 10; + cmd <<= 1; + } + spi_message_add_tail(x, &m); + + if (wlen) { + x++; + x->tx_buf = wbuf; + x->len = wlen; + x->bits_per_word = 9; + spi_message_add_tail(x, &m); + } + + if (rlen) { + x++; + x->rx_buf = rbuf; + x->len = rlen; + spi_message_add_tail(x, &m); + } + + r = spi_sync(ddata->spi, &m); + if (r < 0) + dev_dbg(&ddata->spi->dev, "spi_sync %d\n", r); +} + +static inline void acx565akm_cmd(struct panel_drv_data *ddata, int cmd) +{ + acx565akm_transfer(ddata, cmd, NULL, 0, NULL, 0); +} + +static inline void acx565akm_write(struct panel_drv_data *ddata, + int reg, const u8 *buf, int len) +{ + acx565akm_transfer(ddata, reg, buf, len, NULL, 0); +} + +static inline void acx565akm_read(struct panel_drv_data *ddata, + int reg, u8 *buf, int len) +{ + acx565akm_transfer(ddata, reg, NULL, 0, buf, len); +} + +static void hw_guard_start(struct panel_drv_data *ddata, int guard_msec) +{ + ddata->hw_guard_wait = msecs_to_jiffies(guard_msec); + ddata->hw_guard_end = jiffies + ddata->hw_guard_wait; +} + +static void hw_guard_wait(struct panel_drv_data *ddata) +{ + unsigned long wait = ddata->hw_guard_end - jiffies; + + if ((long)wait > 0 && wait <= ddata->hw_guard_wait) { + set_current_state(TASK_UNINTERRUPTIBLE); + schedule_timeout(wait); + } +} + +static void set_sleep_mode(struct panel_drv_data *ddata, int on) +{ + int cmd; + + if (on) + cmd = MIPID_CMD_SLEEP_IN; + else + cmd = MIPID_CMD_SLEEP_OUT; + /* + * We have to keep 120msec between sleep in/out commands. + * (8.2.15, 8.2.16). + */ + hw_guard_wait(ddata); + acx565akm_cmd(ddata, cmd); + hw_guard_start(ddata, 120); +} + +static void set_display_state(struct panel_drv_data *ddata, int enabled) +{ + int cmd = enabled ? MIPID_CMD_DISP_ON : MIPID_CMD_DISP_OFF; + + acx565akm_cmd(ddata, cmd); +} + +static int panel_enabled(struct panel_drv_data *ddata) +{ + u32 disp_status; + int enabled; + + acx565akm_read(ddata, MIPID_CMD_READ_DISP_STATUS, + (u8 *)&disp_status, 4); + disp_status = __be32_to_cpu(disp_status); + enabled = (disp_status & (1 << 17)) && (disp_status & (1 << 10)); + dev_dbg(&ddata->spi->dev, + "LCD panel %senabled by bootloader (status 0x%04x)\n", + enabled ? "" : "not ", disp_status); + return enabled; +} + +static int panel_detect(struct panel_drv_data *ddata) +{ + acx565akm_read(ddata, MIPID_CMD_READ_DISP_ID, ddata->display_id, 3); + dev_dbg(&ddata->spi->dev, "MIPI display ID: %02x%02x%02x\n", + ddata->display_id[0], + ddata->display_id[1], + ddata->display_id[2]); + + switch (ddata->display_id[0]) { + case 0x10: + ddata->model = MIPID_VER_ACX565AKM; + ddata->name = "acx565akm"; + ddata->has_bc = 1; + ddata->has_cabc = 1; + break; + case 0x29: + ddata->model = MIPID_VER_L4F00311; + ddata->name = "l4f00311"; + break; + case 0x45: + ddata->model = MIPID_VER_LPH8923; + ddata->name = "lph8923"; + break; + case 0x83: + ddata->model = MIPID_VER_LS041Y3; + ddata->name = "ls041y3"; + break; + default: + ddata->name = "unknown"; + dev_err(&ddata->spi->dev, "invalid display ID\n"); + return -ENODEV; + } + + ddata->revision = ddata->display_id[1]; + + dev_info(&ddata->spi->dev, "omapfb: %s rev %02x LCD detected\n", + ddata->name, ddata->revision); + + return 0; +} + +/*----------------------Backlight Control-------------------------*/ + +static void enable_backlight_ctrl(struct panel_drv_data *ddata, int enable) +{ + u16 ctrl; + + acx565akm_read(ddata, MIPID_CMD_READ_CTRL_DISP, (u8 *)&ctrl, 1); + if (enable) { + ctrl |= CTRL_DISP_BRIGHTNESS_CTRL_ON | + CTRL_DISP_BACKLIGHT_ON; + } else { + ctrl &= ~(CTRL_DISP_BRIGHTNESS_CTRL_ON | + CTRL_DISP_BACKLIGHT_ON); + } + + ctrl |= 1 << 8; + acx565akm_write(ddata, MIPID_CMD_WRITE_CTRL_DISP, (u8 *)&ctrl, 2); +} + +static void set_cabc_mode(struct panel_drv_data *ddata, unsigned mode) +{ + u16 cabc_ctrl; + + ddata->cabc_mode = mode; + if (!ddata->enabled) + return; + cabc_ctrl = 0; + acx565akm_read(ddata, MIPID_CMD_READ_CABC, (u8 *)&cabc_ctrl, 1); + cabc_ctrl &= ~3; + cabc_ctrl |= (1 << 8) | (mode & 3); + acx565akm_write(ddata, MIPID_CMD_WRITE_CABC, (u8 *)&cabc_ctrl, 2); +} + +static unsigned get_cabc_mode(struct panel_drv_data *ddata) +{ + return ddata->cabc_mode; +} + +static unsigned get_hw_cabc_mode(struct panel_drv_data *ddata) +{ + u8 cabc_ctrl; + + acx565akm_read(ddata, MIPID_CMD_READ_CABC, &cabc_ctrl, 1); + return cabc_ctrl & 3; +} + +static void acx565akm_set_brightness(struct panel_drv_data *ddata, int level) +{ + int bv; + + bv = level | (1 << 8); + acx565akm_write(ddata, MIPID_CMD_WRITE_DISP_BRIGHTNESS, (u8 *)&bv, 2); + + if (level) + enable_backlight_ctrl(ddata, 1); + else + enable_backlight_ctrl(ddata, 0); +} + +static int acx565akm_get_actual_brightness(struct panel_drv_data *ddata) +{ + u8 bv; + + acx565akm_read(ddata, MIPID_CMD_READ_DISP_BRIGHTNESS, &bv, 1); + + return bv; +} + + +static int acx565akm_bl_update_status(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + int level; + + dev_dbg(&ddata->spi->dev, "%s\n", __func__); + + if (dev->props.fb_blank == FB_BLANK_UNBLANK && + dev->props.power == FB_BLANK_UNBLANK) + level = dev->props.brightness; + else + level = 0; + + if (ddata->has_bc) + acx565akm_set_brightness(ddata, level); + else + return -ENODEV; + + return 0; +} + +static int acx565akm_bl_get_intensity(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + + dev_dbg(&dev->dev, "%s\n", __func__); + + if (!ddata->has_bc) + return -ENODEV; + + if (dev->props.fb_blank == FB_BLANK_UNBLANK && + dev->props.power == FB_BLANK_UNBLANK) { + if (ddata->has_bc) + return acx565akm_get_actual_brightness(ddata); + else + return dev->props.brightness; + } + + return 0; +} + +static int acx565akm_bl_update_status_locked(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + int r; + + mutex_lock(&ddata->mutex); + r = acx565akm_bl_update_status(dev); + mutex_unlock(&ddata->mutex); + + return r; +} + +static int acx565akm_bl_get_intensity_locked(struct backlight_device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&dev->dev); + int r; + + mutex_lock(&ddata->mutex); + r = acx565akm_bl_get_intensity(dev); + mutex_unlock(&ddata->mutex); + + return r; +} + +static const struct backlight_ops acx565akm_bl_ops = { + .get_brightness = acx565akm_bl_get_intensity_locked, + .update_status = acx565akm_bl_update_status_locked, +}; + +/*--------------------Auto Brightness control via Sysfs---------------------*/ + +static const char * const cabc_modes[] = { + "off", /* always used when CABC is not supported */ + "ui", + "still-image", + "moving-image", +}; + +static ssize_t show_cabc_mode(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + const char *mode_str; + int mode; + int len; + + if (!ddata->has_cabc) + mode = 0; + else + mode = get_cabc_mode(ddata); + mode_str = "unknown"; + if (mode >= 0 && mode < ARRAY_SIZE(cabc_modes)) + mode_str = cabc_modes[mode]; + len = snprintf(buf, PAGE_SIZE, "%s\n", mode_str); + + return len < PAGE_SIZE - 1 ? len : PAGE_SIZE - 1; +} + +static ssize_t store_cabc_mode(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + int i; + + for (i = 0; i < ARRAY_SIZE(cabc_modes); i++) { + const char *mode_str = cabc_modes[i]; + int cmp_len = strlen(mode_str); + + if (count > 0 && buf[count - 1] == '\n') + count--; + if (count != cmp_len) + continue; + + if (strncmp(buf, mode_str, cmp_len) == 0) + break; + } + + if (i == ARRAY_SIZE(cabc_modes)) + return -EINVAL; + + if (!ddata->has_cabc && i != 0) + return -EINVAL; + + mutex_lock(&ddata->mutex); + set_cabc_mode(ddata, i); + mutex_unlock(&ddata->mutex); + + return count; +} + +static ssize_t show_cabc_available_modes(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + int len; + int i; + + if (!ddata->has_cabc) + return snprintf(buf, PAGE_SIZE, "%s\n", cabc_modes[0]); + + for (i = 0, len = 0; + len < PAGE_SIZE && i < ARRAY_SIZE(cabc_modes); i++) + len += snprintf(&buf[len], PAGE_SIZE - len, "%s%s%s", + i ? " " : "", cabc_modes[i], + i == ARRAY_SIZE(cabc_modes) - 1 ? "\n" : ""); + + return len < PAGE_SIZE ? len : PAGE_SIZE - 1; +} + +static DEVICE_ATTR(cabc_mode, S_IRUGO | S_IWUSR, + show_cabc_mode, store_cabc_mode); +static DEVICE_ATTR(cabc_available_modes, S_IRUGO, + show_cabc_available_modes, NULL); + +static struct attribute *bldev_attrs[] = { + &dev_attr_cabc_mode.attr, + &dev_attr_cabc_available_modes.attr, + NULL, +}; + +static struct attribute_group bldev_attr_group = { + .attrs = bldev_attrs, +}; + +static int acx565akm_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.sdi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void acx565akm_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.sdi->disconnect(in, dssdev); +} + +static int acx565akm_panel_power_on(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + dev_dbg(&ddata->spi->dev, "%s\n", __func__); + + in->ops.sdi->set_timings(in, &ddata->videomode); + + if (ddata->datapairs > 0) + in->ops.sdi->set_datapairs(in, ddata->datapairs); + + r = in->ops.sdi->enable(in); + if (r) { + pr_err("%s sdi enable failed\n", __func__); + return r; + } + + /*FIXME tweak me */ + msleep(50); + + if (gpio_is_valid(ddata->reset_gpio)) + gpio_set_value(ddata->reset_gpio, 1); + + if (ddata->enabled) { + dev_dbg(&ddata->spi->dev, "panel already enabled\n"); + return 0; + } + + /* + * We have to meet all the following delay requirements: + * 1. tRW: reset pulse width 10usec (7.12.1) + * 2. tRT: reset cancel time 5msec (7.12.1) + * 3. Providing PCLK,HS,VS signals for 2 frames = ~50msec worst + * case (7.6.2) + * 4. 120msec before the sleep out command (7.12.1) + */ + msleep(120); + + set_sleep_mode(ddata, 0); + ddata->enabled = 1; + + /* 5msec between sleep out and the next command. (8.2.16) */ + usleep_range(5000, 10000); + set_display_state(ddata, 1); + set_cabc_mode(ddata, ddata->cabc_mode); + + return acx565akm_bl_update_status(ddata->bl_dev); +} + +static void acx565akm_panel_power_off(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + dev_dbg(dssdev->dev, "%s\n", __func__); + + if (!ddata->enabled) + return; + + set_display_state(ddata, 0); + set_sleep_mode(ddata, 1); + ddata->enabled = 0; + /* + * We have to provide PCLK,HS,VS signals for 2 frames (worst case + * ~50msec) after sending the sleep in command and asserting the + * reset signal. We probably could assert the reset w/o the delay + * but we still delay to avoid possible artifacts. (7.6.1) + */ + msleep(50); + + if (gpio_is_valid(ddata->reset_gpio)) + gpio_set_value(ddata->reset_gpio, 0); + + /* FIXME need to tweak this delay */ + msleep(100); + + in->ops.sdi->disable(in); +} + +static int acx565akm_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + int r; + + dev_dbg(dssdev->dev, "%s\n", __func__); + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + mutex_lock(&ddata->mutex); + r = acx565akm_panel_power_on(dssdev); + mutex_unlock(&ddata->mutex); + if (r) + return r; + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void acx565akm_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + dev_dbg(dssdev->dev, "%s\n", __func__); + + if (!omapdss_device_is_enabled(dssdev)) + return; + + mutex_lock(&ddata->mutex); + acx565akm_panel_power_off(dssdev); + mutex_unlock(&ddata->mutex); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void acx565akm_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.sdi->set_timings(in, timings); +} + +static void acx565akm_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int acx565akm_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.sdi->check_timings(in, timings); +} + +static struct omap_dss_driver acx565akm_ops = { + .connect = acx565akm_connect, + .disconnect = acx565akm_disconnect, + + .enable = acx565akm_enable, + .disable = acx565akm_disable, + + .set_timings = acx565akm_set_timings, + .get_timings = acx565akm_get_timings, + .check_timings = acx565akm_check_timings, + + .get_resolution = omapdss_default_get_resolution, +}; + +static int acx565akm_probe_pdata(struct spi_device *spi) +{ + const struct panel_acx565akm_platform_data *pdata; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&spi->dev); + + ddata->reset_gpio = pdata->reset_gpio; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&spi->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + ddata->in = in; + + ddata->datapairs = pdata->datapairs; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int acx565akm_probe_of(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct device_node *np = spi->dev.of_node; + + ddata->reset_gpio = of_get_named_gpio(np, "reset-gpios", 0); + + ddata->in = omapdss_of_find_source_for_first_ep(np); + if (IS_ERR(ddata->in)) { + dev_err(&spi->dev, "failed to find video source\n"); + return PTR_ERR(ddata->in); + } + + return 0; +} + +static int acx565akm_probe(struct spi_device *spi) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + struct backlight_device *bldev; + int max_brightness, brightness; + struct backlight_properties props; + int r; + + dev_dbg(&spi->dev, "%s\n", __func__); + + spi->mode = SPI_MODE_3; + + ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + dev_set_drvdata(&spi->dev, ddata); + + ddata->spi = spi; + + mutex_init(&ddata->mutex); + + if (dev_get_platdata(&spi->dev)) { + r = acx565akm_probe_pdata(spi); + if (r) + return r; + } else if (spi->dev.of_node) { + r = acx565akm_probe_of(spi); + if (r) + return r; + } else { + dev_err(&spi->dev, "platform data missing!\n"); + return -ENODEV; + } + + if (gpio_is_valid(ddata->reset_gpio)) { + r = devm_gpio_request_one(&spi->dev, ddata->reset_gpio, + GPIOF_OUT_INIT_LOW, "lcd reset"); + if (r) + goto err_gpio; + } + + if (gpio_is_valid(ddata->reset_gpio)) + gpio_set_value(ddata->reset_gpio, 1); + + /* + * After reset we have to wait 5 msec before the first + * command can be sent. + */ + usleep_range(5000, 10000); + + ddata->enabled = panel_enabled(ddata); + + r = panel_detect(ddata); + + if (!ddata->enabled && gpio_is_valid(ddata->reset_gpio)) + gpio_set_value(ddata->reset_gpio, 0); + + if (r) { + dev_err(&spi->dev, "%s panel detect error\n", __func__); + goto err_detect; + } + + memset(&props, 0, sizeof(props)); + props.fb_blank = FB_BLANK_UNBLANK; + props.power = FB_BLANK_UNBLANK; + props.type = BACKLIGHT_RAW; + + bldev = backlight_device_register("acx565akm", &ddata->spi->dev, + ddata, &acx565akm_bl_ops, &props); + if (IS_ERR(bldev)) { + r = PTR_ERR(bldev); + goto err_reg_bl; + } + ddata->bl_dev = bldev; + if (ddata->has_cabc) { + r = sysfs_create_group(&bldev->dev.kobj, &bldev_attr_group); + if (r) { + dev_err(&bldev->dev, + "%s failed to create sysfs files\n", __func__); + goto err_sysfs; + } + ddata->cabc_mode = get_hw_cabc_mode(ddata); + } + + max_brightness = 255; + + if (ddata->has_bc) + brightness = acx565akm_get_actual_brightness(ddata); + else + brightness = 0; + + bldev->props.max_brightness = max_brightness; + bldev->props.brightness = brightness; + + acx565akm_bl_update_status(bldev); + + + ddata->videomode = acx565akm_panel_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &spi->dev; + dssdev->driver = &acx565akm_ops; + dssdev->type = OMAP_DISPLAY_TYPE_SDI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&spi->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: + sysfs_remove_group(&bldev->dev.kobj, &bldev_attr_group); +err_sysfs: + backlight_device_unregister(bldev); +err_reg_bl: +err_detect: +err_gpio: + omap_dss_put_device(ddata->in); + return r; +} + +static int acx565akm_remove(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->spi->dev, "%s\n", __func__); + + sysfs_remove_group(&ddata->bl_dev->dev.kobj, &bldev_attr_group); + backlight_device_unregister(ddata->bl_dev); + + omapdss_unregister_display(dssdev); + + acx565akm_disable(dssdev); + acx565akm_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id acx565akm_of_match[] = { + { .compatible = "omapdss,sony,acx565akm", }, + {}, +}; +MODULE_DEVICE_TABLE(of, acx565akm_of_match); + +static struct spi_driver acx565akm_driver = { + .driver = { + .name = "acx565akm", + .of_match_table = acx565akm_of_match, + .suppress_bind_attrs = true, + }, + .probe = acx565akm_probe, + .remove = acx565akm_remove, +}; + +module_spi_driver(acx565akm_driver); + +MODULE_AUTHOR("Nokia Corporation"); +MODULE_DESCRIPTION("acx565akm LCD Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c new file mode 100644 index 000000000000..4d657f3ab679 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td028ttec1.c @@ -0,0 +1,511 @@ +/* + * Toppoly TD028TTEC1 panel support + * + * Copyright (C) 2008 Nokia Corporation + * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com> + * + * Neo 1973 code (jbt6k74.c): + * Copyright (C) 2006-2007 by OpenMoko, Inc. + * Author: Harald Welte <laforge@openmoko.org> + * + * Ported and adapted from Neo 1973 U-Boot by: + * H. Nikolaus Schaller <hns@goldelico.com> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 as published by + * the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/gpio.h> +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + int data_lines; + + struct omap_video_timings videomode; + + struct spi_device *spi_dev; +}; + +static struct omap_video_timings td028ttec1_panel_timings = { + .x_res = 480, + .y_res = 640, + .pixelclock = 22153000, + .hfp = 24, + .hsw = 8, + .hbp = 8, + .vfp = 4, + .vsw = 2, + .vbp = 2, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + + .data_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, +}; + +#define JBT_COMMAND 0x000 +#define JBT_DATA 0x100 + +static int jbt_ret_write_0(struct panel_drv_data *ddata, u8 reg) +{ + int rc; + u16 tx_buf = JBT_COMMAND | reg; + + rc = spi_write(ddata->spi_dev, (u8 *)&tx_buf, + 1*sizeof(u16)); + if (rc != 0) + dev_err(&ddata->spi_dev->dev, + "jbt_ret_write_0 spi_write ret %d\n", rc); + + return rc; +} + +static int jbt_reg_write_1(struct panel_drv_data *ddata, u8 reg, u8 data) +{ + int rc; + u16 tx_buf[2]; + + tx_buf[0] = JBT_COMMAND | reg; + tx_buf[1] = JBT_DATA | data; + rc = spi_write(ddata->spi_dev, (u8 *)tx_buf, + 2*sizeof(u16)); + if (rc != 0) + dev_err(&ddata->spi_dev->dev, + "jbt_reg_write_1 spi_write ret %d\n", rc); + + return rc; +} + +static int jbt_reg_write_2(struct panel_drv_data *ddata, u8 reg, u16 data) +{ + int rc; + u16 tx_buf[3]; + + tx_buf[0] = JBT_COMMAND | reg; + tx_buf[1] = JBT_DATA | (data >> 8); + tx_buf[2] = JBT_DATA | (data & 0xff); + + rc = spi_write(ddata->spi_dev, (u8 *)tx_buf, + 3*sizeof(u16)); + + if (rc != 0) + dev_err(&ddata->spi_dev->dev, + "jbt_reg_write_2 spi_write ret %d\n", rc); + + return rc; +} + +enum jbt_register { + JBT_REG_SLEEP_IN = 0x10, + JBT_REG_SLEEP_OUT = 0x11, + + JBT_REG_DISPLAY_OFF = 0x28, + JBT_REG_DISPLAY_ON = 0x29, + + JBT_REG_RGB_FORMAT = 0x3a, + JBT_REG_QUAD_RATE = 0x3b, + + JBT_REG_POWER_ON_OFF = 0xb0, + JBT_REG_BOOSTER_OP = 0xb1, + JBT_REG_BOOSTER_MODE = 0xb2, + JBT_REG_BOOSTER_FREQ = 0xb3, + JBT_REG_OPAMP_SYSCLK = 0xb4, + JBT_REG_VSC_VOLTAGE = 0xb5, + JBT_REG_VCOM_VOLTAGE = 0xb6, + JBT_REG_EXT_DISPL = 0xb7, + JBT_REG_OUTPUT_CONTROL = 0xb8, + JBT_REG_DCCLK_DCEV = 0xb9, + JBT_REG_DISPLAY_MODE1 = 0xba, + JBT_REG_DISPLAY_MODE2 = 0xbb, + JBT_REG_DISPLAY_MODE = 0xbc, + JBT_REG_ASW_SLEW = 0xbd, + JBT_REG_DUMMY_DISPLAY = 0xbe, + JBT_REG_DRIVE_SYSTEM = 0xbf, + + JBT_REG_SLEEP_OUT_FR_A = 0xc0, + JBT_REG_SLEEP_OUT_FR_B = 0xc1, + JBT_REG_SLEEP_OUT_FR_C = 0xc2, + JBT_REG_SLEEP_IN_LCCNT_D = 0xc3, + JBT_REG_SLEEP_IN_LCCNT_E = 0xc4, + JBT_REG_SLEEP_IN_LCCNT_F = 0xc5, + JBT_REG_SLEEP_IN_LCCNT_G = 0xc6, + + JBT_REG_GAMMA1_FINE_1 = 0xc7, + JBT_REG_GAMMA1_FINE_2 = 0xc8, + JBT_REG_GAMMA1_INCLINATION = 0xc9, + JBT_REG_GAMMA1_BLUE_OFFSET = 0xca, + + JBT_REG_BLANK_CONTROL = 0xcf, + JBT_REG_BLANK_TH_TV = 0xd0, + JBT_REG_CKV_ON_OFF = 0xd1, + JBT_REG_CKV_1_2 = 0xd2, + JBT_REG_OEV_TIMING = 0xd3, + JBT_REG_ASW_TIMING_1 = 0xd4, + JBT_REG_ASW_TIMING_2 = 0xd5, + + JBT_REG_HCLOCK_VGA = 0xec, + JBT_REG_HCLOCK_QVGA = 0xed, +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int td028ttec1_panel_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void td028ttec1_panel_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int td028ttec1_panel_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + dev_dbg(dssdev->dev, "td028ttec1_panel_enable() - state %d\n", + dssdev->state); + + /* three times command zero */ + r |= jbt_ret_write_0(ddata, 0x00); + usleep_range(1000, 2000); + r |= jbt_ret_write_0(ddata, 0x00); + usleep_range(1000, 2000); + r |= jbt_ret_write_0(ddata, 0x00); + usleep_range(1000, 2000); + + if (r) { + dev_warn(dssdev->dev, "transfer error\n"); + goto transfer_err; + } + + /* deep standby out */ + r |= jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x17); + + /* RGB I/F on, RAM write off, QVGA through, SIGCON enable */ + r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE, 0x80); + + /* Quad mode off */ + r |= jbt_reg_write_1(ddata, JBT_REG_QUAD_RATE, 0x00); + + /* AVDD on, XVDD on */ + r |= jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x16); + + /* Output control */ + r |= jbt_reg_write_2(ddata, JBT_REG_OUTPUT_CONTROL, 0xfff9); + + /* Sleep mode off */ + r |= jbt_ret_write_0(ddata, JBT_REG_SLEEP_OUT); + + /* at this point we have like 50% grey */ + + /* initialize register set */ + r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE1, 0x01); + r |= jbt_reg_write_1(ddata, JBT_REG_DISPLAY_MODE2, 0x00); + r |= jbt_reg_write_1(ddata, JBT_REG_RGB_FORMAT, 0x60); + r |= jbt_reg_write_1(ddata, JBT_REG_DRIVE_SYSTEM, 0x10); + r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_OP, 0x56); + r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_MODE, 0x33); + r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_FREQ, 0x11); + r |= jbt_reg_write_1(ddata, JBT_REG_BOOSTER_FREQ, 0x11); + r |= jbt_reg_write_1(ddata, JBT_REG_OPAMP_SYSCLK, 0x02); + r |= jbt_reg_write_1(ddata, JBT_REG_VSC_VOLTAGE, 0x2b); + r |= jbt_reg_write_1(ddata, JBT_REG_VCOM_VOLTAGE, 0x40); + r |= jbt_reg_write_1(ddata, JBT_REG_EXT_DISPL, 0x03); + r |= jbt_reg_write_1(ddata, JBT_REG_DCCLK_DCEV, 0x04); + /* + * default of 0x02 in JBT_REG_ASW_SLEW responsible for 72Hz requirement + * to avoid red / blue flicker + */ + r |= jbt_reg_write_1(ddata, JBT_REG_ASW_SLEW, 0x04); + r |= jbt_reg_write_1(ddata, JBT_REG_DUMMY_DISPLAY, 0x00); + + r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_A, 0x11); + r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_B, 0x11); + r |= jbt_reg_write_1(ddata, JBT_REG_SLEEP_OUT_FR_C, 0x11); + r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_D, 0x2040); + r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_E, 0x60c0); + r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_F, 0x1020); + r |= jbt_reg_write_2(ddata, JBT_REG_SLEEP_IN_LCCNT_G, 0x60c0); + + r |= jbt_reg_write_2(ddata, JBT_REG_GAMMA1_FINE_1, 0x5533); + r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_FINE_2, 0x00); + r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_INCLINATION, 0x00); + r |= jbt_reg_write_1(ddata, JBT_REG_GAMMA1_BLUE_OFFSET, 0x00); + + r |= jbt_reg_write_2(ddata, JBT_REG_HCLOCK_VGA, 0x1f0); + r |= jbt_reg_write_1(ddata, JBT_REG_BLANK_CONTROL, 0x02); + r |= jbt_reg_write_2(ddata, JBT_REG_BLANK_TH_TV, 0x0804); + + r |= jbt_reg_write_1(ddata, JBT_REG_CKV_ON_OFF, 0x01); + r |= jbt_reg_write_2(ddata, JBT_REG_CKV_1_2, 0x0000); + + r |= jbt_reg_write_2(ddata, JBT_REG_OEV_TIMING, 0x0d0e); + r |= jbt_reg_write_2(ddata, JBT_REG_ASW_TIMING_1, 0x11a4); + r |= jbt_reg_write_1(ddata, JBT_REG_ASW_TIMING_2, 0x0e); + + r |= jbt_ret_write_0(ddata, JBT_REG_DISPLAY_ON); + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + +transfer_err: + + return r ? -EIO : 0; +} + +static void td028ttec1_panel_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + dev_dbg(dssdev->dev, "td028ttec1_panel_disable()\n"); + + jbt_ret_write_0(ddata, JBT_REG_DISPLAY_OFF); + jbt_reg_write_2(ddata, JBT_REG_OUTPUT_CONTROL, 0x8002); + jbt_ret_write_0(ddata, JBT_REG_SLEEP_IN); + jbt_reg_write_1(ddata, JBT_REG_POWER_ON_OFF, 0x00); + + in->ops.dpi->disable(in); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void td028ttec1_panel_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void td028ttec1_panel_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int td028ttec1_panel_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver td028ttec1_ops = { + .connect = td028ttec1_panel_connect, + .disconnect = td028ttec1_panel_disconnect, + + .enable = td028ttec1_panel_enable, + .disable = td028ttec1_panel_disable, + + .set_timings = td028ttec1_panel_set_timings, + .get_timings = td028ttec1_panel_get_timings, + .check_timings = td028ttec1_panel_check_timings, +}; + +static int td028ttec1_panel_probe_pdata(struct spi_device *spi) +{ + const struct panel_tpo_td028ttec1_platform_data *pdata; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&spi->dev); + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&spi->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int td028ttec1_probe_of(struct spi_device *spi) +{ + struct device_node *node = spi->dev.of_node; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *in; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&spi->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int td028ttec1_panel_probe(struct spi_device *spi) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + dev_dbg(&spi->dev, "%s\n", __func__); + + spi->bits_per_word = 9; + spi->mode = SPI_MODE_3; + + r = spi_setup(spi); + if (r < 0) { + dev_err(&spi->dev, "spi_setup failed: %d\n", r); + return r; + } + + ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + dev_set_drvdata(&spi->dev, ddata); + + ddata->spi_dev = spi; + + if (dev_get_platdata(&spi->dev)) { + r = td028ttec1_panel_probe_pdata(spi); + if (r) + return r; + } else if (spi->dev.of_node) { + r = td028ttec1_probe_of(spi); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->videomode = td028ttec1_panel_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &spi->dev; + dssdev->driver = &td028ttec1_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + dssdev->phy.dpi.data_lines = ddata->data_lines; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&spi->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: + omap_dss_put_device(ddata->in); + return r; +} + +static int td028ttec1_panel_remove(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->spi_dev->dev, "%s\n", __func__); + + omapdss_unregister_display(dssdev); + + td028ttec1_panel_disable(dssdev); + td028ttec1_panel_disconnect(dssdev); + + omap_dss_put_device(in); + + return 0; +} + +static const struct of_device_id td028ttec1_of_match[] = { + { .compatible = "omapdss,toppoly,td028ttec1", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, td028ttec1_of_match); + +static struct spi_driver td028ttec1_spi_driver = { + .probe = td028ttec1_panel_probe, + .remove = td028ttec1_panel_remove, + + .driver = { + .name = "panel-tpo-td028ttec1", + .of_match_table = td028ttec1_of_match, + .suppress_bind_attrs = true, + }, +}; + +module_spi_driver(td028ttec1_spi_driver); + +MODULE_ALIAS("spi:toppoly,td028ttec1"); +MODULE_AUTHOR("H. Nikolaus Schaller <hns@goldelico.com>"); +MODULE_DESCRIPTION("Toppoly TD028TTEC1 panel driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c new file mode 100644 index 000000000000..68e3b68a2920 --- /dev/null +++ b/drivers/gpu/drm/omapdrm/displays/panel-tpo-td043mtea1.c @@ -0,0 +1,686 @@ +/* + * TPO TD043MTEA1 Panel driver + * + * Author: Gražvydas Ignotas <notasas@gmail.com> + * Converted to new DSS device model: Tomi Valkeinen <tomi.valkeinen@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +#include <linux/module.h> +#include <linux/delay.h> +#include <linux/spi/spi.h> +#include <linux/regulator/consumer.h> +#include <linux/gpio.h> +#include <linux/err.h> +#include <linux/slab.h> +#include <linux/of_gpio.h> + +#include <video/omapdss.h> +#include <video/omap-panel-data.h> + +#define TPO_R02_MODE(x) ((x) & 7) +#define TPO_R02_MODE_800x480 7 +#define TPO_R02_NCLK_RISING BIT(3) +#define TPO_R02_HSYNC_HIGH BIT(4) +#define TPO_R02_VSYNC_HIGH BIT(5) + +#define TPO_R03_NSTANDBY BIT(0) +#define TPO_R03_EN_CP_CLK BIT(1) +#define TPO_R03_EN_VGL_PUMP BIT(2) +#define TPO_R03_EN_PWM BIT(3) +#define TPO_R03_DRIVING_CAP_100 BIT(4) +#define TPO_R03_EN_PRE_CHARGE BIT(6) +#define TPO_R03_SOFTWARE_CTL BIT(7) + +#define TPO_R04_NFLIP_H BIT(0) +#define TPO_R04_NFLIP_V BIT(1) +#define TPO_R04_CP_CLK_FREQ_1H BIT(2) +#define TPO_R04_VGL_FREQ_1H BIT(4) + +#define TPO_R03_VAL_NORMAL (TPO_R03_NSTANDBY | TPO_R03_EN_CP_CLK | \ + TPO_R03_EN_VGL_PUMP | TPO_R03_EN_PWM | \ + TPO_R03_DRIVING_CAP_100 | TPO_R03_EN_PRE_CHARGE | \ + TPO_R03_SOFTWARE_CTL) + +#define TPO_R03_VAL_STANDBY (TPO_R03_DRIVING_CAP_100 | \ + TPO_R03_EN_PRE_CHARGE | TPO_R03_SOFTWARE_CTL) + +static const u16 tpo_td043_def_gamma[12] = { + 105, 315, 381, 431, 490, 537, 579, 686, 780, 837, 880, 1023 +}; + +struct panel_drv_data { + struct omap_dss_device dssdev; + struct omap_dss_device *in; + + struct omap_video_timings videomode; + + int data_lines; + + struct spi_device *spi; + struct regulator *vcc_reg; + int nreset_gpio; + u16 gamma[12]; + u32 mode; + u32 hmirror:1; + u32 vmirror:1; + u32 powered_on:1; + u32 spi_suspended:1; + u32 power_on_resume:1; +}; + +static const struct omap_video_timings tpo_td043_timings = { + .x_res = 800, + .y_res = 480, + + .pixelclock = 36000000, + + .hsw = 1, + .hfp = 68, + .hbp = 214, + + .vsw = 1, + .vfp = 39, + .vbp = 34, + + .vsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .hsync_level = OMAPDSS_SIG_ACTIVE_LOW, + .data_pclk_edge = OMAPDSS_DRIVE_SIG_FALLING_EDGE, + .de_level = OMAPDSS_SIG_ACTIVE_HIGH, + .sync_pclk_edge = OMAPDSS_DRIVE_SIG_RISING_EDGE, +}; + +#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) + +static int tpo_td043_write(struct spi_device *spi, u8 addr, u8 data) +{ + struct spi_message m; + struct spi_transfer xfer; + u16 w; + int r; + + spi_message_init(&m); + + memset(&xfer, 0, sizeof(xfer)); + + w = ((u16)addr << 10) | (1 << 8) | data; + xfer.tx_buf = &w; + xfer.bits_per_word = 16; + xfer.len = 2; + spi_message_add_tail(&xfer, &m); + + r = spi_sync(spi, &m); + if (r < 0) + dev_warn(&spi->dev, "failed to write to LCD reg (%d)\n", r); + return r; +} + +static void tpo_td043_write_gamma(struct spi_device *spi, u16 gamma[12]) +{ + u8 i, val; + + /* gamma bits [9:8] */ + for (val = i = 0; i < 4; i++) + val |= (gamma[i] & 0x300) >> ((i + 1) * 2); + tpo_td043_write(spi, 0x11, val); + + for (val = i = 0; i < 4; i++) + val |= (gamma[i+4] & 0x300) >> ((i + 1) * 2); + tpo_td043_write(spi, 0x12, val); + + for (val = i = 0; i < 4; i++) + val |= (gamma[i+8] & 0x300) >> ((i + 1) * 2); + tpo_td043_write(spi, 0x13, val); + + /* gamma bits [7:0] */ + for (val = i = 0; i < 12; i++) + tpo_td043_write(spi, 0x14 + i, gamma[i] & 0xff); +} + +static int tpo_td043_write_mirror(struct spi_device *spi, bool h, bool v) +{ + u8 reg4 = TPO_R04_NFLIP_H | TPO_R04_NFLIP_V | + TPO_R04_CP_CLK_FREQ_1H | TPO_R04_VGL_FREQ_1H; + if (h) + reg4 &= ~TPO_R04_NFLIP_H; + if (v) + reg4 &= ~TPO_R04_NFLIP_V; + + return tpo_td043_write(spi, 4, reg4); +} + +static int tpo_td043_set_hmirror(struct omap_dss_device *dssdev, bool enable) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev); + + ddata->hmirror = enable; + return tpo_td043_write_mirror(ddata->spi, ddata->hmirror, + ddata->vmirror); +} + +static bool tpo_td043_get_hmirror(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dssdev->dev); + + return ddata->hmirror; +} + +static ssize_t tpo_td043_vmirror_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", ddata->vmirror); +} + +static ssize_t tpo_td043_vmirror_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + int val; + int ret; + + ret = kstrtoint(buf, 0, &val); + if (ret < 0) + return ret; + + val = !!val; + + ret = tpo_td043_write_mirror(ddata->spi, ddata->hmirror, val); + if (ret < 0) + return ret; + + ddata->vmirror = val; + + return count; +} + +static ssize_t tpo_td043_mode_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + + return snprintf(buf, PAGE_SIZE, "%d\n", ddata->mode); +} + +static ssize_t tpo_td043_mode_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + long val; + int ret; + + ret = kstrtol(buf, 0, &val); + if (ret != 0 || val & ~7) + return -EINVAL; + + ddata->mode = val; + + val |= TPO_R02_NCLK_RISING; + tpo_td043_write(ddata->spi, 2, val); + + return count; +} + +static ssize_t tpo_td043_gamma_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + ssize_t len = 0; + int ret; + int i; + + for (i = 0; i < ARRAY_SIZE(ddata->gamma); i++) { + ret = snprintf(buf + len, PAGE_SIZE - len, "%u ", + ddata->gamma[i]); + if (ret < 0) + return ret; + len += ret; + } + buf[len - 1] = '\n'; + + return len; +} + +static ssize_t tpo_td043_gamma_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + unsigned int g[12]; + int ret; + int i; + + ret = sscanf(buf, "%u %u %u %u %u %u %u %u %u %u %u %u", + &g[0], &g[1], &g[2], &g[3], &g[4], &g[5], + &g[6], &g[7], &g[8], &g[9], &g[10], &g[11]); + + if (ret != 12) + return -EINVAL; + + for (i = 0; i < 12; i++) + ddata->gamma[i] = g[i]; + + tpo_td043_write_gamma(ddata->spi, ddata->gamma); + + return count; +} + +static DEVICE_ATTR(vmirror, S_IRUGO | S_IWUSR, + tpo_td043_vmirror_show, tpo_td043_vmirror_store); +static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, + tpo_td043_mode_show, tpo_td043_mode_store); +static DEVICE_ATTR(gamma, S_IRUGO | S_IWUSR, + tpo_td043_gamma_show, tpo_td043_gamma_store); + +static struct attribute *tpo_td043_attrs[] = { + &dev_attr_vmirror.attr, + &dev_attr_mode.attr, + &dev_attr_gamma.attr, + NULL, +}; + +static struct attribute_group tpo_td043_attr_group = { + .attrs = tpo_td043_attrs, +}; + +static int tpo_td043_power_on(struct panel_drv_data *ddata) +{ + int r; + + if (ddata->powered_on) + return 0; + + r = regulator_enable(ddata->vcc_reg); + if (r != 0) + return r; + + /* wait for panel to stabilize */ + msleep(160); + + if (gpio_is_valid(ddata->nreset_gpio)) + gpio_set_value(ddata->nreset_gpio, 1); + + tpo_td043_write(ddata->spi, 2, + TPO_R02_MODE(ddata->mode) | TPO_R02_NCLK_RISING); + tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_NORMAL); + tpo_td043_write(ddata->spi, 0x20, 0xf0); + tpo_td043_write(ddata->spi, 0x21, 0xf0); + tpo_td043_write_mirror(ddata->spi, ddata->hmirror, + ddata->vmirror); + tpo_td043_write_gamma(ddata->spi, ddata->gamma); + + ddata->powered_on = 1; + return 0; +} + +static void tpo_td043_power_off(struct panel_drv_data *ddata) +{ + if (!ddata->powered_on) + return; + + tpo_td043_write(ddata->spi, 3, + TPO_R03_VAL_STANDBY | TPO_R03_EN_PWM); + + if (gpio_is_valid(ddata->nreset_gpio)) + gpio_set_value(ddata->nreset_gpio, 0); + + /* wait for at least 2 vsyncs before cutting off power */ + msleep(50); + + tpo_td043_write(ddata->spi, 3, TPO_R03_VAL_STANDBY); + + regulator_disable(ddata->vcc_reg); + + ddata->powered_on = 0; +} + +static int tpo_td043_connect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (omapdss_device_is_connected(dssdev)) + return 0; + + r = in->ops.dpi->connect(in, dssdev); + if (r) + return r; + + return 0; +} + +static void tpo_td043_disconnect(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_connected(dssdev)) + return; + + in->ops.dpi->disconnect(in, dssdev); +} + +static int tpo_td043_enable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + int r; + + if (!omapdss_device_is_connected(dssdev)) + return -ENODEV; + + if (omapdss_device_is_enabled(dssdev)) + return 0; + + if (ddata->data_lines) + in->ops.dpi->set_data_lines(in, ddata->data_lines); + in->ops.dpi->set_timings(in, &ddata->videomode); + + r = in->ops.dpi->enable(in); + if (r) + return r; + + /* + * If we are resuming from system suspend, SPI clocks might not be + * enabled yet, so we'll program the LCD from SPI PM resume callback. + */ + if (!ddata->spi_suspended) { + r = tpo_td043_power_on(ddata); + if (r) { + in->ops.dpi->disable(in); + return r; + } + } + + dssdev->state = OMAP_DSS_DISPLAY_ACTIVE; + + return 0; +} + +static void tpo_td043_disable(struct omap_dss_device *dssdev) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + if (!omapdss_device_is_enabled(dssdev)) + return; + + in->ops.dpi->disable(in); + + if (!ddata->spi_suspended) + tpo_td043_power_off(ddata); + + dssdev->state = OMAP_DSS_DISPLAY_DISABLED; +} + +static void tpo_td043_set_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + ddata->videomode = *timings; + dssdev->panel.timings = *timings; + + in->ops.dpi->set_timings(in, timings); +} + +static void tpo_td043_get_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + + *timings = ddata->videomode; +} + +static int tpo_td043_check_timings(struct omap_dss_device *dssdev, + struct omap_video_timings *timings) +{ + struct panel_drv_data *ddata = to_panel_data(dssdev); + struct omap_dss_device *in = ddata->in; + + return in->ops.dpi->check_timings(in, timings); +} + +static struct omap_dss_driver tpo_td043_ops = { + .connect = tpo_td043_connect, + .disconnect = tpo_td043_disconnect, + + .enable = tpo_td043_enable, + .disable = tpo_td043_disable, + + .set_timings = tpo_td043_set_timings, + .get_timings = tpo_td043_get_timings, + .check_timings = tpo_td043_check_timings, + + .set_mirror = tpo_td043_set_hmirror, + .get_mirror = tpo_td043_get_hmirror, + + .get_resolution = omapdss_default_get_resolution, +}; + + +static int tpo_td043_probe_pdata(struct spi_device *spi) +{ + const struct panel_tpo_td043mtea1_platform_data *pdata; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev, *in; + + pdata = dev_get_platdata(&spi->dev); + + ddata->nreset_gpio = pdata->nreset_gpio; + + in = omap_dss_find_output(pdata->source); + if (in == NULL) { + dev_err(&spi->dev, "failed to find video source '%s'\n", + pdata->source); + return -EPROBE_DEFER; + } + ddata->in = in; + + ddata->data_lines = pdata->data_lines; + + dssdev = &ddata->dssdev; + dssdev->name = pdata->name; + + return 0; +} + +static int tpo_td043_probe_of(struct spi_device *spi) +{ + struct device_node *node = spi->dev.of_node; + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *in; + int gpio; + + gpio = of_get_named_gpio(node, "reset-gpios", 0); + if (!gpio_is_valid(gpio)) { + dev_err(&spi->dev, "failed to parse enable gpio\n"); + return gpio; + } + ddata->nreset_gpio = gpio; + + in = omapdss_of_find_source_for_first_ep(node); + if (IS_ERR(in)) { + dev_err(&spi->dev, "failed to find video source\n"); + return PTR_ERR(in); + } + + ddata->in = in; + + return 0; +} + +static int tpo_td043_probe(struct spi_device *spi) +{ + struct panel_drv_data *ddata; + struct omap_dss_device *dssdev; + int r; + + dev_dbg(&spi->dev, "%s\n", __func__); + + spi->bits_per_word = 16; + spi->mode = SPI_MODE_0; + + r = spi_setup(spi); + if (r < 0) { + dev_err(&spi->dev, "spi_setup failed: %d\n", r); + return r; + } + + ddata = devm_kzalloc(&spi->dev, sizeof(*ddata), GFP_KERNEL); + if (ddata == NULL) + return -ENOMEM; + + dev_set_drvdata(&spi->dev, ddata); + + ddata->spi = spi; + + if (dev_get_platdata(&spi->dev)) { + r = tpo_td043_probe_pdata(spi); + if (r) + return r; + } else if (spi->dev.of_node) { + r = tpo_td043_probe_of(spi); + if (r) + return r; + } else { + return -ENODEV; + } + + ddata->mode = TPO_R02_MODE_800x480; + memcpy(ddata->gamma, tpo_td043_def_gamma, sizeof(ddata->gamma)); + + ddata->vcc_reg = devm_regulator_get(&spi->dev, "vcc"); + if (IS_ERR(ddata->vcc_reg)) { + dev_err(&spi->dev, "failed to get LCD VCC regulator\n"); + r = PTR_ERR(ddata->vcc_reg); + goto err_regulator; + } + + if (gpio_is_valid(ddata->nreset_gpio)) { + r = devm_gpio_request_one(&spi->dev, + ddata->nreset_gpio, GPIOF_OUT_INIT_LOW, + "lcd reset"); + if (r < 0) { + dev_err(&spi->dev, "couldn't request reset GPIO\n"); + goto err_gpio_req; + } + } + + r = sysfs_create_group(&spi->dev.kobj, &tpo_td043_attr_group); + if (r) { + dev_err(&spi->dev, "failed to create sysfs files\n"); + goto err_sysfs; + } + + ddata->videomode = tpo_td043_timings; + + dssdev = &ddata->dssdev; + dssdev->dev = &spi->dev; + dssdev->driver = &tpo_td043_ops; + dssdev->type = OMAP_DISPLAY_TYPE_DPI; + dssdev->owner = THIS_MODULE; + dssdev->panel.timings = ddata->videomode; + + r = omapdss_register_display(dssdev); + if (r) { + dev_err(&spi->dev, "Failed to register panel\n"); + goto err_reg; + } + + return 0; + +err_reg: + sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group); +err_sysfs: +err_gpio_req: +err_regulator: + omap_dss_put_device(ddata->in); + return r; +} + +static int tpo_td043_remove(struct spi_device *spi) +{ + struct panel_drv_data *ddata = dev_get_drvdata(&spi->dev); + struct omap_dss_device *dssdev = &ddata->dssdev; + struct omap_dss_device *in = ddata->in; + + dev_dbg(&ddata->spi->dev, "%s\n", __func__); + + omapdss_unregister_display(dssdev); + + tpo_td043_disable(dssdev); + tpo_td043_disconnect(dssdev); + + omap_dss_put_device(in); + + sysfs_remove_group(&spi->dev.kobj, &tpo_td043_attr_group); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int tpo_td043_spi_suspend(struct device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + + dev_dbg(dev, "tpo_td043_spi_suspend, tpo %p\n", ddata); + + ddata->power_on_resume = ddata->powered_on; + tpo_td043_power_off(ddata); + ddata->spi_suspended = 1; + + return 0; +} + +static int tpo_td043_spi_resume(struct device *dev) +{ + struct panel_drv_data *ddata = dev_get_drvdata(dev); + int ret; + + dev_dbg(dev, "tpo_td043_spi_resume\n"); + + if (ddata->power_on_resume) { + ret = tpo_td043_power_on(ddata); + if (ret) + return ret; + } + ddata->spi_suspended = 0; + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(tpo_td043_spi_pm, + tpo_td043_spi_suspend, tpo_td043_spi_resume); + +static const struct of_device_id tpo_td043_of_match[] = { + { .compatible = "omapdss,tpo,td043mtea1", }, + {}, +}; + +MODULE_DEVICE_TABLE(of, tpo_td043_of_match); + +static struct spi_driver tpo_td043_spi_driver = { + .driver = { + .name = "panel-tpo-td043mtea1", + .pm = &tpo_td043_spi_pm, + .of_match_table = tpo_td043_of_match, + .suppress_bind_attrs = true, + }, + .probe = tpo_td043_probe, + .remove = tpo_td043_remove, +}; + +module_spi_driver(tpo_td043_spi_driver); + +MODULE_ALIAS("spi:tpo,td043mtea1"); +MODULE_AUTHOR("Gražvydas Ignotas <notasas@gmail.com>"); +MODULE_DESCRIPTION("TPO TD043MTEA1 LCD Driver"); +MODULE_LICENSE("GPL"); |