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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-18 11:58:31 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-01-18 11:58:31 -0800 |
commit | d43fb9f3c5dff281dd72bea5cd2e91386fdc33a8 (patch) | |
tree | 4f3f2b00629b2df1ce4f02684689ccaa4b434854 /drivers/video/fbdev/omap2/omapfb/displays/panel-nec-nl8048hl11.c | |
parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security (diff) | |
parent | video: fbdev: pxafb: fix out of memory error path (diff) | |
download | linux-dev-d43fb9f3c5dff281dd72bea5cd2e91386fdc33a8.tar.xz linux-dev-d43fb9f3c5dff281dd72bea5cd2e91386fdc33a8.zip |
Merge tag 'fbdev-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux
Pull fbdev updates from Tomi Valkeinen:
"Summary:
- pxafb: device-tree support
- An unsafe kernel parameter 'lockless_register_fb' for debugging
problems happening while inside the console lock
- Small miscellaneous fixes & cleanups
- omapdss: add writeback support functions
- Separation of omapfb and omapdrm (see below)
About the separation of omapfb and omapdrm, see
http://permalink.gmane.org/gmane.comp.video.dri.devel/143151
for longer story. The short version:
omapfb and omapdrm have shared low level drivers (omapdss and panel
drivers), making further development of omapdrm difficult. After
these patches omapfb and omapdrm have their own versions of the
drivers, which are more or less direct copies for now but will diverge
soon.
This also means that omapfb (everything under drivers/video/fbdev/omap2/)
is now in maintenance mode, and all new development will be done for
omapdrm (drivers/gpu/drm/omapdrm/)"
* tag 'fbdev-4.5' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux: (49 commits)
video: fbdev: pxafb: fix out of memory error path
drm/omap: make omapdrm select OMAP2_DSS
drm/omap: move omapdss & displays under omapdrm
omapfb: move vrfb into omapfb
omapfb: take omapfb's private omapdss into use
omapfb/displays: change CONFIG_DISPLAY_* to CONFIG_FB_OMAP2_*
omapfb/dss: change CONFIG_OMAP* to CONFIG_FB_OMAP*
omapdss: remove CONFIG_OMAP2_DSS_VENC from omapdss.h
omapfb: copy omapdss & displays for omapfb
omapfb: allow compilation only if DRM_OMAP is disabled
fbdev: omap2: panel-dpi: simplify gpio setting
fbdev: omap2: panel-dpi: in .disable first disable backlight then display
OMAPDSS: DSS: fix a warning message
video: omapdss: delete unneeded of_node_put
OMAPDSS: DISPC: Remove boolean comparisons
OMAPDSS: DSI: cleanup DSI_IRQ_ERROR_MASK define
OMAPDSS: remove extra out == NULL checks
OMAPDSS: change internal dispc functions to static
OMAPDSS: make a two dss feat funcs internal to omapdss
OMAPDSS: remove extra EXPORT_SYMBOLs
...
Diffstat (limited to 'drivers/video/fbdev/omap2/omapfb/displays/panel-nec-nl8048hl11.c')
-rw-r--r-- | drivers/video/fbdev/omap2/omapfb/displays/panel-nec-nl8048hl11.c | 437 |
1 files changed, 437 insertions, 0 deletions
diff --git a/drivers/video/fbdev/omap2/omapfb/displays/panel-nec-nl8048hl11.c b/drivers/video/fbdev/omap2/omapfb/displays/panel-nec-nl8048hl11.c new file mode 100644 index 000000000000..8a928c9a2fc9 --- /dev/null +++ b/drivers/video/fbdev/omap2/omapfb/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"); |