diff options
| -rw-r--r-- | drivers/video/omap2/displays/panel-dvi.c | 31 | ||||
| -rw-r--r-- | include/video/omap-panel-dvi.h | 2 |
2 files changed, 33 insertions, 0 deletions
diff --git a/drivers/video/omap2/displays/panel-dvi.c b/drivers/video/omap2/displays/panel-dvi.c index 03eb14af33e0..876b7989ecb4 100644 --- a/drivers/video/omap2/displays/panel-dvi.c +++ b/drivers/video/omap2/displays/panel-dvi.c @@ -21,6 +21,7 @@ #include <linux/slab.h> #include <video/omapdss.h> #include <linux/i2c.h> +#include <linux/gpio.h> #include <drm/drm_edid.h> #include <video/omap-panel-dvi.h> @@ -44,6 +45,8 @@ struct panel_drv_data { struct omap_dss_device *dssdev; struct mutex lock; + + int pd_gpio; }; static inline struct panel_dvi_platform_data @@ -54,6 +57,7 @@ static inline struct panel_dvi_platform_data static int panel_dvi_power_on(struct omap_dss_device *dssdev) { + struct panel_drv_data *ddata = dev_get_drvdata(&dssdev->dev); struct panel_dvi_platform_data *pdata = get_pdata(dssdev); int r; @@ -70,6 +74,9 @@ static int panel_dvi_power_on(struct omap_dss_device *dssdev) goto err1; } + if (gpio_is_valid(ddata->pd_gpio)) + gpio_set_value(ddata->pd_gpio, 1); + return 0; err1: omapdss_dpi_display_disable(dssdev); @@ -79,11 +86,15 @@ err0: static void panel_dvi_power_off(struct omap_dss_device *dssdev) { + struct panel_drv_data *ddata = dev_get_drvdata(&dssdev->dev); struct panel_dvi_platform_data *pdata = get_pdata(dssdev); if (dssdev->state != OMAP_DSS_DISPLAY_ACTIVE) return; + if (gpio_is_valid(ddata->pd_gpio)) + gpio_set_value(ddata->pd_gpio, 0); + if (pdata->platform_disable) pdata->platform_disable(dssdev); @@ -92,7 +103,9 @@ static void panel_dvi_power_off(struct omap_dss_device *dssdev) static int panel_dvi_probe(struct omap_dss_device *dssdev) { + struct panel_dvi_platform_data *pdata = get_pdata(dssdev); struct panel_drv_data *ddata; + int r; ddata = kzalloc(sizeof(*ddata), GFP_KERNEL); if (!ddata) @@ -104,6 +117,21 @@ static int panel_dvi_probe(struct omap_dss_device *dssdev) ddata->dssdev = dssdev; mutex_init(&ddata->lock); + if (pdata) + ddata->pd_gpio = pdata->power_down_gpio; + else + ddata->pd_gpio = -1; + + if (gpio_is_valid(ddata->pd_gpio)) { + r = gpio_request_one(ddata->pd_gpio, GPIOF_OUT_INIT_LOW, + "tfp410 pd"); + if (r) { + dev_err(&dssdev->dev, "Failed to request PD GPIO %d\n", + ddata->pd_gpio); + ddata->pd_gpio = -1; + } + } + dev_set_drvdata(&dssdev->dev, ddata); return 0; @@ -115,6 +143,9 @@ static void __exit panel_dvi_remove(struct omap_dss_device *dssdev) mutex_lock(&ddata->lock); + if (gpio_is_valid(ddata->pd_gpio)) + gpio_free(ddata->pd_gpio); + dev_set_drvdata(&dssdev->dev, NULL); mutex_unlock(&ddata->lock); diff --git a/include/video/omap-panel-dvi.h b/include/video/omap-panel-dvi.h index 87ad567b4229..4ad41fcc809c 100644 --- a/include/video/omap-panel-dvi.h +++ b/include/video/omap-panel-dvi.h @@ -27,11 +27,13 @@ struct omap_dss_device; * @platform_enable: platform specific panel enable function * @platform_disable: platform specific panel disable function * @i2c_bus_num: i2c bus id for the panel + * @power_down_gpio: gpio number for PD pin (or -1 if not available) */ struct panel_dvi_platform_data { int (*platform_enable)(struct omap_dss_device *dssdev); void (*platform_disable)(struct omap_dss_device *dssdev); u16 i2c_bus_num; + int power_down_gpio; }; #endif /* __OMAP_PANEL_DVI_H */ |