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path: root/drivers/video/fbdev/omap2/displays-new/connector-hdmi.c
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Diffstat (limited to 'drivers/video/fbdev/omap2/displays-new/connector-hdmi.c')
-rw-r--r--drivers/video/fbdev/omap2/displays-new/connector-hdmi.c25
1 files changed, 24 insertions, 1 deletions
diff --git a/drivers/video/fbdev/omap2/displays-new/connector-hdmi.c b/drivers/video/fbdev/omap2/displays-new/connector-hdmi.c
index 29ed21b9dce5..4420ccb69aa9 100644
--- a/drivers/video/fbdev/omap2/displays-new/connector-hdmi.c
+++ b/drivers/video/fbdev/omap2/displays-new/connector-hdmi.c
@@ -13,6 +13,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/of.h>
+#include <linux/of_gpio.h>
#include <drm/drm_edid.h>
@@ -43,6 +44,8 @@ struct panel_drv_data {
struct device *dev;
struct omap_video_timings timings;
+
+ int hpd_gpio;
};
#define to_panel_data(x) container_of(x, struct panel_drv_data, dssdev)
@@ -161,7 +164,10 @@ static bool hdmic_detect(struct omap_dss_device *dssdev)
struct panel_drv_data *ddata = to_panel_data(dssdev);
struct omap_dss_device *in = ddata->in;
- return in->ops.hdmi->detect(in);
+ if (gpio_is_valid(ddata->hpd_gpio))
+ return gpio_get_value_cansleep(ddata->hpd_gpio);
+ else
+ return in->ops.hdmi->detect(in);
}
static int hdmic_audio_enable(struct omap_dss_device *dssdev)
@@ -288,6 +294,8 @@ static int hdmic_probe_pdata(struct platform_device *pdev)
pdata = dev_get_platdata(&pdev->dev);
+ ddata->hpd_gpio = -ENODEV;
+
in = omap_dss_find_output(pdata->source);
if (in == NULL) {
dev_err(&pdev->dev, "Failed to find video source\n");
@@ -307,6 +315,14 @@ static int hdmic_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;
+
+ /* HPD GPIO */
+ gpio = of_get_named_gpio(node, "hpd-gpios", 0);
+ if (gpio_is_valid(gpio))
+ ddata->hpd_gpio = gpio;
+ else
+ ddata->hpd_gpio = -ENODEV;
in = omapdss_of_find_source_for_first_ep(node);
if (IS_ERR(in)) {
@@ -344,6 +360,13 @@ static int hdmic_probe(struct platform_device *pdev)
return -ENODEV;
}
+ if (gpio_is_valid(ddata->hpd_gpio)) {
+ r = devm_gpio_request_one(&pdev->dev, ddata->hpd_gpio,
+ GPIOF_DIR_IN, "hdmi_hpd");
+ if (r)
+ goto err_reg;
+ }
+
ddata->timings = hdmic_default_timings;
dssdev = &ddata->dssdev;