linux-kernel - [PATCH 1/2] drm/bridge: analogix_dp: Add analogix_dp_psr

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Date:   Fri, 23 Sep 2016 16:06:39 +0200
From:   Tomeu Vizoso <tomeu.vizoso@...labora.com>
To:     linux-kernel@...r.kernel.org
Cc:     Tomeu Vizoso <tomeu.vizoso@...labora.com>,
        Sean Paul <seanpaul@...omium.org>,
        Yakir Yang <ykk@...k-chips.com>,
        Archit Taneja <architt@...eaurora.org>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH 1/2] drm/bridge: analogix_dp: Add analogix_dp_psr_supported

So users know whether PSR should be enabled or not.

Signed-off-by: Tomeu Vizoso <tomeu.vizoso@...labora.com>
Cc: Sean Paul <seanpaul@...omium.org>
Cc: Yakir Yang <ykk@...k-chips.com>
Cc: Archit Taneja <architt@...eaurora.org>
---
 drivers/gpu/drm/bridge/analogix/analogix_dp_core.c | 8 ++++++++
 include/drm/bridge/analogix_dp.h                   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
index bf992460a6c7..91d8540ac8f0 100644
--- a/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
+++ b/drivers/gpu/drm/bridge/analogix/analogix_dp_core.c
@@ -98,6 +98,14 @@ static int analogix_dp_detect_hpd(struct analogix_dp_device *dp)
 	return 0;
 }
 
+int analogix_dp_psr_supported(struct device *dev)
+{
+	struct analogix_dp_device *dp = dev_get_drvdata(dev);
+
+	return dp->psr_support;
+}
+EXPORT_SYMBOL_GPL(analogix_dp_psr_supported);
+
 int analogix_dp_enable_psr(struct device *dev)
 {
 	struct analogix_dp_device *dp = dev_get_drvdata(dev);
diff --git a/include/drm/bridge/analogix_dp.h b/include/drm/bridge/analogix_dp.h
index 5f498ca07eea..c99d6eaef1ac 100644
--- a/include/drm/bridge/analogix_dp.h
+++ b/include/drm/bridge/analogix_dp.h
@@ -38,6 +38,7 @@ struct analogix_dp_plat_data {
 			 struct drm_connector *);
 };
 
+int analogix_dp_psr_supported(struct device *dev);
 int analogix_dp_enable_psr(struct device *dev);
 int analogix_dp_disable_psr(struct device *dev);
 
-- 
2.7.4