From 164abbd2b7ef62aae6fc80450a2d085acdc3da3e Mon Sep 17 00:00:00 2001
From: Alex Bee <knaerzche@gmail.com>
Date: Fri, 22 Dec 2023 18:42:11 +0100
Subject: [PATCH] drm/rockchip: inno_hdmi: Correctly setup HDMI quantization
range
The display controller will always give full range RGB regardless of the
mode set, but HDMI requires certain modes to be transmitted in limited
range RGB. This is especially required for HDMI sinks which do not support
non-standard quantization ranges.
This enables color space conversion for those modes and sets the
quantization range accordingly in the AVI infoframe.
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20231222174220.55249-21-knaerzche@gmail.com
---
drivers/gpu/drm/rockchip/inno_hdmi.c | 60 +++++++++++++++++++---------
1 file changed, 42 insertions(+), 18 deletions(-)
diff --git a/drivers/gpu/drm/rockchip/inno_hdmi.c b/drivers/gpu/drm/rockchip/inno_hdmi.c
index c6a4b228ea93d..fbf73f6b99ca8 100644
--- a/drivers/gpu/drm/rockchip/inno_hdmi.c
+++ b/drivers/gpu/drm/rockchip/inno_hdmi.c
@@ -52,6 +52,7 @@ struct inno_hdmi_connector_state {
struct drm_connector_state base;
unsigned int enc_out_format;
unsigned int colorimetry;
+ bool rgb_limited_range;
};
static struct inno_hdmi *encoder_to_inno_hdmi(struct drm_encoder *encoder)
@@ -269,6 +270,18 @@ static int inno_hdmi_config_video_avi(struct inno_hdmi *hdmi,
else
frame.avi.colorspace = HDMI_COLORSPACE_RGB;
+ if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) {
+ drm_hdmi_avi_infoframe_quant_range(&frame.avi,
+ connector, mode,
+ inno_conn_state->rgb_limited_range ?
+ HDMI_QUANTIZATION_RANGE_LIMITED :
+ HDMI_QUANTIZATION_RANGE_FULL);
+ } else {
+ frame.avi.quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT;
+ frame.avi.ycc_quantization_range =
+ HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
+ }
+
return inno_hdmi_upload_frame(hdmi, &frame, HDMI_INFOFRAME_TYPE_AVI);
}
@@ -296,29 +309,37 @@ static int inno_hdmi_config_video_csc(struct inno_hdmi *hdmi)
hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL2, value);
if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_RGB) {
- value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
- hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
-
- hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
- m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
- v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
- v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
- return 0;
- }
-
- if (inno_conn_state->colorimetry == HDMI_COLORIMETRY_ITU_601) {
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
- csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
+ if (inno_conn_state->rgb_limited_range) {
+ csc_mode = CSC_RGB_0_255_TO_RGB_16_235_8BIT;
auto_csc = AUTO_CSC_DISABLE;
c0_c2_change = C0_C2_CHANGE_DISABLE;
csc_enable = v_CSC_ENABLE;
+
+ } else {
+ value = v_SOF_DISABLE | v_COLOR_DEPTH_NOT_INDICATED(1);
+ hdmi_writeb(hdmi, HDMI_VIDEO_CONTRL3, value);
+
+ hdmi_modb(hdmi, HDMI_VIDEO_CONTRL,
+ m_VIDEO_AUTO_CSC | m_VIDEO_C0_C2_SWAP,
+ v_VIDEO_AUTO_CSC(AUTO_CSC_DISABLE) |
+ v_VIDEO_C0_C2_SWAP(C0_C2_CHANGE_DISABLE));
+ return 0;
}
} else {
- if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
- csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
- auto_csc = AUTO_CSC_DISABLE;
- c0_c2_change = C0_C2_CHANGE_DISABLE;
- csc_enable = v_CSC_ENABLE;
+ if (inno_conn_state->colorimetry == HDMI_COLORIMETRY_ITU_601) {
+ if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
+ csc_mode = CSC_RGB_0_255_TO_ITU601_16_235_8BIT;
+ auto_csc = AUTO_CSC_DISABLE;
+ c0_c2_change = C0_C2_CHANGE_DISABLE;
+ csc_enable = v_CSC_ENABLE;
+ }
+ } else {
+ if (inno_conn_state->enc_out_format == HDMI_COLORSPACE_YUV444) {
+ csc_mode = CSC_RGB_0_255_TO_ITU709_16_235_8BIT;
+ auto_csc = AUTO_CSC_DISABLE;
+ c0_c2_change = C0_C2_CHANGE_DISABLE;
+ csc_enable = v_CSC_ENABLE;
+ }
}
}
@@ -472,6 +493,8 @@ inno_hdmi_encoder_atomic_check(struct drm_encoder *encoder,
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
inno_conn_state->enc_out_format = HDMI_COLORSPACE_RGB;
+ inno_conn_state->rgb_limited_range =
+ drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED;
return 0;
}
@@ -558,6 +581,7 @@ static void inno_hdmi_connector_reset(struct drm_connector *connector)
inno_conn_state->colorimetry = HDMI_COLORIMETRY_ITU_709;
inno_conn_state->enc_out_format = HDMI_COLORSPACE_RGB;
+ inno_conn_state->rgb_limited_range = false;
}
static struct drm_connector_state *
--
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