DRM: tegra_udrm: support dual hdmi hotplug

Bug 200549422

Change-Id: I0c073509e097db6de8706fb59bd67ec2e92fe4d4
Signed-off-by: Jeremy Ho <jeremyh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2209472
Reviewed-by: Ken Chang <kenc@nvidia.com>
Reviewed-by: Yogish Kulkarni <yogishk@nvidia.com>
Reviewed-by: Naveen Kumar S <nkumars@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/drivers/gpu/drm/tegra_udrm/tegra_udrm_drv.c b/drivers/gpu/drm/tegra_udrm/tegra_udrm_drv.c
index 14c1e2845..28effb97c 100644
--- a/drivers/gpu/drm/tegra_udrm/tegra_udrm_drv.c
+++ b/drivers/gpu/drm/tegra_udrm/tegra_udrm_drv.c
@@ -41,7 +41,7 @@ static bool tegra_udrm_modeset_module_param;
 module_param_named(modeset, tegra_udrm_modeset_module_param, bool, 0400);
 
 static const unsigned int cable_ids[] = {
-        EXTCON_DISP_HDMI, EXTCON_DISP_DP, EXTCON_DISP_DSIHPD};
+        EXTCON_DISP_HDMI, EXTCON_DISP_DP, EXTCON_DISP_DSIHPD, EXTCON_DISP_HDMI2};
 struct tegra_udrm_private {
         struct drm_device *drm;
         struct notifier_block hpd_nb[ARRAY_SIZE(cable_ids)];
@@ -501,6 +501,17 @@ static int tegra_udrm_dsi_notifier(struct notifier_block *nb,
         return NOTIFY_DONE;
 }
 
+static int tegra_udrm_hdmi2_notifier(struct notifier_block *nb,
+                unsigned long event, void *unused)
+{
+        struct tegra_udrm_private *priv = container_of(nb,
+                        struct tegra_udrm_private, hpd_nb[3]);
+
+        drm_sysfs_hotplug_event(priv->drm);
+
+        return NOTIFY_DONE;
+}
+
 static int tegra_udrm_probe(struct platform_device *pdev)
 {
         struct drm_driver *driver = &tegra_udrm_driver;
@@ -537,6 +548,7 @@ static int tegra_udrm_probe(struct platform_device *pdev)
                 priv->hpd_nb[0].notifier_call = tegra_udrm_hdmi_notifier;
                 priv->hpd_nb[1].notifier_call = tegra_udrm_dp_notifier;
                 priv->hpd_nb[2].notifier_call = tegra_udrm_dsi_notifier;
+                priv->hpd_nb[3].notifier_call = tegra_udrm_hdmi2_notifier;
                 for (i = 0; i < ARRAY_SIZE(cable_ids); i++) {
                         ret = devm_extcon_register_notifier(drm->dev, edev,
                                 cable_ids[i], &priv->hpd_nb[i]);