[PATCH v6 8/8] drm/msm/dp: Handle eDP mode_valid differently from dp

From: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
To: <dri-devel@lists.freedesktop.org>,
	<linux-arm-msm@vger.kernel.org>,
	<freedreno@lists.freedesktop.org>, <linux-kernel@vger.kernel.org>,
	<devicetree@vger.kernel.org>
Cc: Sankeerth Billakanti <quic_sbillaka@quicinc.com>,
	<robdclark@gmail.com>, <seanpaul@chromium.org>,
	<swboyd@chromium.org>, <quic_kalyant@quicinc.com>,
	<quic_abhinavk@quicinc.com>, <dianders@chromium.org>,
	<quic_khsieh@quicinc.com>, <bjorn.andersson@linaro.org>,
	<sean@poorly.run>, <airlied@linux.ie>, <daniel@ffwll.ch>,
	<dmitry.baryshkov@linaro.org>, <quic_vproddut@quicinc.com>,
	<quic_aravindh@quicinc.com>
Subject: [PATCH v6 8/8] drm/msm/dp: Handle eDP mode_valid differently from dp
Date: Wed, 30 Mar 2022 21:32:59 +0530	[thread overview]
Message-ID: <1648656179-10347-9-git-send-email-quic_sbillaka@quicinc.com> (raw)
In-Reply-To: <1648656179-10347-1-git-send-email-quic_sbillaka@quicinc.com>

The panel-edp driver modes needs to be validated differently from DP
because the link capabilities are not available for EDP by that time.

Signed-off-by: Sankeerth Billakanti <quic_sbillaka@quicinc.com>
---
 drivers/gpu/drm/msm/dp/dp_display.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c
index 8bafdd0..f9c7d9a 100644
--- a/drivers/gpu/drm/msm/dp/dp_display.c
+++ b/drivers/gpu/drm/msm/dp/dp_display.c
@@ -1003,6 +1003,12 @@ enum drm_mode_status dp_bridge_mode_valid(struct drm_bridge *bridge,
 		return -EINVAL;
 	}
 
+	if (dp->connector_type == DRM_MODE_CONNECTOR_eDP) {
+		if (mode_pclk_khz > DP_MAX_PIXEL_CLK_KHZ)
+			return MODE_CLOCK_HIGH;
+		return MODE_OK;
+	}
+
 	if ((dp->max_pclk_khz <= 0) ||
 			(dp->max_pclk_khz > DP_MAX_PIXEL_CLK_KHZ) ||
 			(mode->clock > dp->max_pclk_khz))
-- 
2.7.4

