Re: [PATCH 01/25] OMAPDSS: panel-dvi: add PD gpio handling
On Thu, May 3, 2012 at 6:57 AM, Tomi Valkeinen tomi.valkei...@ti.com wrote: The driver for the TFP410 chip should handle the power-down signal of the chip, instead of the current way of handling it in the board files. This patch adds power_down_gpio into the device's platform data, and adds the necessary code in the driver to request and handle the GPIO. Signed-off-by: Tomi Valkeinen tomi.valkei...@ti.com --- drivers/video/omap2/displays/panel-dvi.c | 31 ++ include/video/omap-panel-dvi.h | 2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/video/omap2/displays/panel-dvi.c b/drivers/video/omap2/displays/panel-dvi.c index 03eb14a..876b798 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); + On Beagleboard xM, this GPIO is connected though an I2C chip so it sleeps. Can you change these to gpio_set_value_cansleep? 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); + Same with this one. 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 87ad567b..4ad41fc 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 */ -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH 01/25] OMAPDSS: panel-dvi: add PD gpio handling
On Wed, 2012-05-09 at 09:50 -0700, Russ Dill wrote: On Thu, May 3, 2012 at 6:57 AM, Tomi Valkeinen tomi.valkei...@ti.com wrote: The driver for the TFP410 chip should handle the power-down signal of the chip, instead of the current way of handling it in the board files. This patch adds power_down_gpio into the device's platform data, and adds the necessary code in the driver to request and handle the GPIO. Signed-off-by: Tomi Valkeinen tomi.valkei...@ti.com --- drivers/video/omap2/displays/panel-dvi.c | 31 ++ include/video/omap-panel-dvi.h |2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/video/omap2/displays/panel-dvi.c b/drivers/video/omap2/displays/panel-dvi.c index 03eb14a..876b798 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); + On Beagleboard xM, this GPIO is connected though an I2C chip so it sleeps. Can you change these to gpio_set_value_cansleep? This patch has already been applied, so we have to do follow up patches for this. I can look at this tomorrow, but if you update your ARM: OMAP: Cleanup Beagleboard DVI reset gpio patch, will you take a look at this also? The applied patches can be found from here, so the follow up patches should be based on this: git://gitorious.org/linux-omap-dss2/linux.git for-l-o-3.5 Tomi signature.asc Description: This is a digitally signed message part
[PATCH 01/25] OMAPDSS: panel-dvi: add PD gpio handling
The driver for the TFP410 chip should handle the power-down signal of the chip, instead of the current way of handling it in the board files. This patch adds power_down_gpio into the device's platform data, and adds the necessary code in the driver to request and handle the GPIO. Signed-off-by: Tomi Valkeinen tomi.valkei...@ti.com --- drivers/video/omap2/displays/panel-dvi.c | 31 ++ include/video/omap-panel-dvi.h |2 ++ 2 files changed, 33 insertions(+) diff --git a/drivers/video/omap2/displays/panel-dvi.c b/drivers/video/omap2/displays/panel-dvi.c index 03eb14a..876b798 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 87ad567b..4ad41fc 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 */ -- 1.7.9.5 -- To unsubscribe from this list: send the line unsubscribe linux-omap in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html