diff options
Diffstat (limited to 'drivers/video/fbdev/omap2/displays-new/encoder-tpd12s015.c')
| -rw-r--r-- | drivers/video/fbdev/omap2/displays-new/encoder-tpd12s015.c | 379 |
1 files changed, 0 insertions, 379 deletions
diff --git a/drivers/video/fbdev/omap2/displays-new/encoder-tpd12s015.c b/drivers/video/fbdev/omap2/displays-new/encoder-tpd12s015.c deleted file mode 100644 index 990af6baeb0f..000000000000 --- a/drivers/video/fbdev/omap2/displays-new/encoder-tpd12s015.c +++ /dev/null @@ -1,379 +0,0 @@ -/* - * 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"); |