diff options
Diffstat (limited to 'drivers/gpu/drm/omapdrm/displays/panel-dpi.c')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/displays/panel-dpi.c | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c deleted file mode 100644 index 465120809eb3..000000000000 --- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c +++ /dev/null @@ -1,221 +0,0 @@ -/* - * Generic MIPI DPI Panel Driver - * - * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/ - * 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/consumer.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/of.h> -#include <linux/regulator/consumer.h> -#include <linux/backlight.h> - -#include <video/of_display_timing.h> - -#include "../dss/omapdss.h" - -struct panel_drv_data { - struct omap_dss_device dssdev; - - struct videomode vm; - - struct backlight_device *backlight; - - struct gpio_desc *enable_gpio; - struct regulator *vcc_supply; -}; - -#define to_panel_data(p) container_of(p, struct panel_drv_data, dssdev) - -static int panel_dpi_connect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ - return 0; -} - -static void panel_dpi_disconnect(struct omap_dss_device *src, - struct omap_dss_device *dst) -{ -} - -static int panel_dpi_enable(struct omap_dss_device *dssdev) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - struct omap_dss_device *src = dssdev->src; - int r; - - if (!omapdss_device_is_connected(dssdev)) - return -ENODEV; - - if (omapdss_device_is_enabled(dssdev)) - return 0; - - r = src->ops->enable(src); - if (r) - return r; - - r = regulator_enable(ddata->vcc_supply); - if (r) { - src->ops->disable(src); - return r; - } - - gpiod_set_value_cansleep(ddata->enable_gpio, 1); - backlight_enable(ddata->backlight); - - 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 *src = dssdev->src; - - if (!omapdss_device_is_enabled(dssdev)) - return; - - backlight_disable(ddata->backlight); - - gpiod_set_value_cansleep(ddata->enable_gpio, 0); - regulator_disable(ddata->vcc_supply); - - src->ops->disable(src); - - dssdev->state = OMAP_DSS_DISPLAY_DISABLED; -} - -static void panel_dpi_get_timings(struct omap_dss_device *dssdev, - struct videomode *vm) -{ - struct panel_drv_data *ddata = to_panel_data(dssdev); - - *vm = ddata->vm; -} - -static const struct omap_dss_device_ops panel_dpi_ops = { - .connect = panel_dpi_connect, - .disconnect = panel_dpi_disconnect, - - .enable = panel_dpi_enable, - .disable = panel_dpi_disable, - - .get_timings = panel_dpi_get_timings, -}; - -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; - int r; - struct display_timing timing; - 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; - - /* - * Many different panels are supported by this driver and there are - * probably very different needs for their reset pins in regards to - * timing and order relative to the enable gpio. So for now it's just - * ensured that the reset line isn't active. - */ - gpio = devm_gpiod_get_optional(&pdev->dev, "reset", GPIOD_OUT_LOW); - if (IS_ERR(gpio)) - return PTR_ERR(gpio); - - ddata->vcc_supply = devm_regulator_get(&pdev->dev, "vcc"); - if (IS_ERR(ddata->vcc_supply)) - return PTR_ERR(ddata->vcc_supply); - - ddata->backlight = devm_of_find_backlight(&pdev->dev); - - if (IS_ERR(ddata->backlight)) - return PTR_ERR(ddata->backlight); - - 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, &ddata->vm); - - 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); - - r = panel_dpi_probe_of(pdev); - if (r) - return r; - - dssdev = &ddata->dssdev; - dssdev->dev = &pdev->dev; - dssdev->ops = &panel_dpi_ops; - dssdev->type = OMAP_DISPLAY_TYPE_DPI; - dssdev->owner = THIS_MODULE; - dssdev->of_ports = BIT(0); - drm_bus_flags_from_videomode(&ddata->vm, &dssdev->bus_flags); - - omapdss_display_init(dssdev); - omapdss_device_register(dssdev); - - return 0; -} - -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; - - omapdss_device_unregister(dssdev); - - panel_dpi_disable(dssdev); - - 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"); |