drm/msm: add RGB 30-bit deep color support
Check if the TV supports deep color and adjust the
pxl clock accordingly before setting the mode. Also
make sure that this pxl clock is within the limits
of the sink.
Change-Id: I3c44c06ea54b6c49e19c8c41d693000f7c3feeb7
Signed-off-by: Yuan Zhao <yzhao@codeaurora.org>
Signed-off-by: Ajay Singh Parmar <aparmar@codeaurora.org>
Signed-off-by: Chirag Khurana <ckhurana@codeaurora.org>
diff --git a/drivers/gpu/drm/msm/msm_kms.h b/drivers/gpu/drm/msm/msm_kms.h
index f5f6853..efd6a77 100644
--- a/drivers/gpu/drm/msm/msm_kms.h
+++ b/drivers/gpu/drm/msm/msm_kms.h
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2016-2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.
* Copyright (C) 2013 Red Hat
* Author: Rob Clark <robdclark@gmail.com>
*
@@ -41,6 +41,25 @@
/* Request to switch the bit clk */
#define MSM_MODE_FLAG_SEAMLESS_DYN_CLK (1<<4)
+/*
+ * We need setting some flags in bridge, and using them in encoder. Add them in
+ * private_flags would be better for use. DRM_MODE_FLAG_SUPPORTS_RGB/YUV are
+ * flags that indicating the SINK supported color formats read from EDID. While,
+ * these flags defined here indicate the best color/bit depth foramt we choosed
+ * that would be better for display. For example the best mode display like:
+ * RGB+RGB_DC,YUV+YUV_DC, RGB,YUV. And we could not set RGB and YUV format at
+ * the same time. And also RGB_DC only set when RGB format is set,the same for
+ * YUV_DC.
+ */
+/* Enable RGB444 30 bit deep color */
+#define MSM_MODE_FLAG_RGB444_DC_ENABLE (1<<5)
+/* Enable YUV420 30 bit deep color */
+#define MSM_MODE_FLAG_YUV420_DC_ENABLE (1<<6)
+/* Choose RGB444 format to display */
+#define MSM_MODE_FLAG_COLOR_FORMAT_RGB444 (1<<7)
+/* Choose YUV420 format to display */
+#define MSM_MODE_FLAG_COLOR_FORMAT_YCBCR420 (1<<8)
+
/* As there are different display controller blocks depending on the
* snapdragon version, the kms support is split out and the appropriate
* implementation is loaded at runtime. The kms module is responsible