From a350fcd817bdba8674c2d7ac488ccb230d3d69e2 Mon Sep 17 00:00:00 2001
From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 26 Jan 2016 09:45:13 +0100
Subject: [PATCH] drm/exynos: mixer: add experimental support for 1024x600@43Hz
 mode

This patch adds experimental configuration data for HDMI PHY for 32MHz
pixel clock modes. This enables support for WaveShare 7inch HDMI LCD (C)
HDMI panel.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Change-Id: I840da27e5d496b4abf04e9fe2380f678cfd990ef
---
 drivers/gpu/drm/exynos/exynos_hdmi.c  | 18 ++++++++++++++++++
 drivers/gpu/drm/exynos/exynos_mixer.c |  3 ++-
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/exynos/exynos_hdmi.c b/drivers/gpu/drm/exynos/exynos_hdmi.c
index adc69331dafe..e70838f621ff 100644
--- a/drivers/gpu/drm/exynos/exynos_hdmi.c
+++ b/drivers/gpu/drm/exynos/exynos_hdmi.c
@@ -226,6 +226,15 @@ static const struct hdmiphy_config hdmiphy_v14_configs[] = {
 		},
 	},
 	{
+		.pixel_clock = 32000000,
+		.conf = {
+			0x01, 0x51, 0x28, 0x55, 0x40, 0x01, 0x00, 0x08,
+			0x82, 0x80, 0x0e, 0xd9, 0x45, 0xa0, 0xac, 0x80,
+			0x08, 0x80, 0x11, 0x04, 0x02, 0x22, 0x44, 0x86,
+			0x54, 0xc2, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
 		.pixel_clock = 36000000,
 		.conf = {
 			0x01, 0x51, 0x2d, 0x55, 0x40, 0x01, 0x00, 0x08,
@@ -391,6 +400,15 @@ static const struct hdmiphy_config hdmiphy_5420_configs[] = {
 		},
 	},
 	{
+		.pixel_clock = 32000000,
+		.conf = {
+			0x01, 0x51, 0x28, 0x55, 0x40, 0x40, 0x00, 0xC8,
+			0x02, 0xC8, 0x0E, 0xD9, 0x45, 0xA0, 0xAC, 0x80,
+			0x08, 0x80, 0x09, 0x84, 0x05, 0x02, 0x24, 0x66,
+			0x54, 0xC1, 0x24, 0x00, 0x00, 0x00, 0x01, 0x80,
+		},
+	},
+	{
 		.pixel_clock = 36000000,
 		.conf = {
 			0x01, 0x51, 0x2D, 0x55, 0x40, 0x40, 0x00, 0xC8,
diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c
index 1dd65e261385..17e0dafe5a20 100644
--- a/drivers/gpu/drm/exynos/exynos_mixer.c
+++ b/drivers/gpu/drm/exynos/exynos_mixer.c
@@ -413,6 +413,7 @@ static void mixer_cfg_rgb_fmt(struct mixer_context *ctx, unsigned int height)
 	switch (height) {
 	case 480:
 	case 576:
+	case 600:
 		val = MXR_CFG_RGB601_0_255;
 		break;
 	case 720:
@@ -1126,7 +1127,7 @@ static int mixer_atomic_check(struct exynos_drm_crtc *crtc,
 		return 0;

 	/* Check against some specific resolutions. */
-	if ((w == 1024 && h == 768) ||
+	if ((w == 1024 && (h == 768 || h == 600)) ||
 		(w == 1366 && h == 768) ||
 		(w == 1280 && h == 1024))
 		return 0;