linux-kernel - [PATCH v4 1/3] drm/exynos: mic: Add mode

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Message-id: <1483513115-3068-2-git-send-email-hoegeun.kwon@samsung.com>
Date:   Wed, 04 Jan 2017 15:58:33 +0900
From:   Hoegeun Kwon <hoegeun.kwon@...sung.com>
To:     robh@...nel.org, thierry.reding@...il.com, airlied@...ux.ie,
        kgene@...nel.org, krzk@...nel.org, inki.dae@...sung.com
Cc:     dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        a.hajda@...sung.com, cw00.choi@...sung.com, jh80.chung@...sung.com,
        Hoegeun Kwon <hoegeun.kwon@...sung.com>
Subject: [PATCH v4 1/3] drm/exynos: mic: Add mode_set callback function

Before applying the patch, used the of_get_videomode function to
parse the display-timings in the panel which is the child driver
of dsi in the devicetree. this is wrong. So removed the
of_get_videomode and fixed to get videomode struct through
mode_set callback function.

Signed-off-by: Hoegeun Kwon <hoegeun.kwon@...sung.com>
---
 drivers/gpu/drm/exynos/exynos_drm_mic.c | 33 ++++++++++++++++++++++-----------
 1 file changed, 22 insertions(+), 11 deletions(-)

diff --git a/drivers/gpu/drm/exynos/exynos_drm_mic.c b/drivers/gpu/drm/exynos/exynos_drm_mic.c
index a0def0b..9a50ceb 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_mic.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_mic.c
@@ -286,13 +286,6 @@ static int parse_dt(struct exynos_mic *mic)
 			}
 			nodes[j++] = remote_node;
 
-			ret = of_get_videomode(remote_node,
-							&mic->vm, 0);
-			if (ret) {
-				DRM_ERROR("mic: failed to get videomode");
-				goto exit;
-			}
-
 			break;
 		default:
 			DRM_ERROR("mic: Unknown endpoint from MIC");
@@ -329,6 +322,27 @@ static void mic_post_disable(struct drm_bridge *bridge)
 	mutex_unlock(&mic_mutex);
 }
 
+static void mic_mode_set(struct drm_bridge *bridge,
+			struct drm_display_mode *mode,
+			struct drm_display_mode *adjusted_mode)
+{
+	struct exynos_mic *mic = bridge->driver_private;
+
+	mutex_lock(&mic_mutex);
+	if (mic->enabled)
+		goto already_enabled;
+
+	drm_display_mode_to_videomode(mode, &mic->vm);
+
+	if (!mic->i80_mode)
+		mic_set_porch_timing(mic);
+	mic_set_img_size(mic);
+	mic_set_output_timing(mic);
+
+already_enabled:
+	mutex_unlock(&mic_mutex);
+}
+
 static void mic_pre_enable(struct drm_bridge *bridge)
 {
 	struct exynos_mic *mic = bridge->driver_private;
@@ -355,10 +369,6 @@ static void mic_pre_enable(struct drm_bridge *bridge)
 		goto turn_off_clks;
 	}
 
-	if (!mic->i80_mode)
-		mic_set_porch_timing(mic);
-	mic_set_img_size(mic);
-	mic_set_output_timing(mic);
 	mic_set_reg_on(mic, 1);
 	mic->enabled = 1;
 	mutex_unlock(&mic_mutex);
@@ -377,6 +387,7 @@ static void mic_enable(struct drm_bridge *bridge) { }
 static const struct drm_bridge_funcs mic_bridge_funcs = {
 	.disable = mic_disable,
 	.post_disable = mic_post_disable,
+	.mode_set = mic_mode_set,
 	.pre_enable = mic_pre_enable,
 	.enable = mic_enable,
 };
-- 
1.9.1