From: Rahul Sharma <rahul.sharma@samsung.com>
To: dri-devel@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org
Cc: inki.dae@samsung.com, r.sh.open@gmail.com, joshi@samsung.com,
Sean Paul <seanpaul@chromium.org>,
Rahul Sharma <rahul.sharma@samsung.com>
Subject: [PATCH 6/7] drm/exynos: Read hpd gpio in is_connected callback
Date: Thu, 03 Apr 2014 20:41:03 +0530 [thread overview]
Message-ID: <1396537864-29291-7-git-send-email-rahul.sharma@samsung.com> (raw)
In-Reply-To: <1396537864-29291-1-git-send-email-rahul.sharma@samsung.com>
From: Sean Paul <seanpaul@chromium.org>
This patch adds a gpio read of hpd during the is_connected
callback. This fixes the case where hdmi is off going into
suspend and the cable is plugged in while suspended. In this
case, the hpd interrupt does not fire and is_connected will
return false.
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Rahul Sharma <Rahul.Sharma@samsung.com>
---
drivers/gpu/drm/exynos/exynos_hdmi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index b2cbf43..fce2f7b 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -1031,6 +1031,8 @@ static enum drm_connector_status hdmi_detect(struct drm_connector *connector,
{
struct hdmi_context *hdata = ctx_from_connector(connector);
+ hdata->hpd = gpio_get_value(hdata->hpd_gpio);
+
return hdata->hpd ? connector_status_connected :
connector_status_disconnected;
}
--
1.7.9.5
next prev parent reply other threads:[~2014-04-03 15:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-03 15:10 [PATCH 0/7] drm/exynos: fixes for hdmi related issues Rahul Sharma
2014-04-03 15:10 ` [PATCH 1/7] drm/exynos: Don't reset hdmiphy on hdmi off Rahul Sharma
2014-04-03 15:10 ` [PATCH 2/7] drm/exynos: Debounce HDMI hotplug interrupts Rahul Sharma
2014-04-03 15:11 ` [PATCH 3/7] drm/exynos: check for null pointers in error handling Rahul Sharma
2014-04-03 15:11 ` [PATCH 4/7] drm/exynos: hdmi: remove unnecessary memset Rahul Sharma
2014-04-03 15:11 ` [PATCH 5/7] drm/exynos: add hdmiphy power on/off sequence Rahul Sharma
2014-05-22 14:15 ` Rahul Sharma
2014-04-03 15:11 ` Rahul Sharma [this message]
2014-04-03 15:11 ` [PATCH 7/7] drm/exynos: replace hdmi reset with hdmi disable Rahul Sharma
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