From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Make the code selecting the RGB quantization range a little less magicy
by wrapping it up in a small helper.
Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/drm_edid.c | 18 ++++++++++++++++++
drivers/gpu/drm/i915/intel_dp.c | 4 +++-
drivers/gpu/drm/i915/intel_hdmi.c | 3 ++-
drivers/gpu/drm/vc4/vc4_hdmi.c | 4 +++-
include/drm/drm_edid.h | 2 ++
5 files changed, 28 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 4ff04aa84dd0..304c583b8000 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -3768,6 +3768,24 @@ bool drm_rgb_quant_range_selectable(struct edid *edid)
}
EXPORT_SYMBOL(drm_rgb_quant_range_selectable);
+/**
+ * drm_default_rgb_quant_range - default RGB quantization range
+ * @mode: display mode
+ *
+ * Determine the default RGB quantization range for the mode,
+ * as specified in CEA-861.
+ *
+ * Return: The default RGB quantization range for the mode
+ */
+enum hdmi_quantization_range
+drm_default_rgb_quant_range(const struct drm_display_mode *mode)
+{
+ return drm_match_cea_mode(mode) > 1 ?
+ HDMI_QUANTIZATION_RANGE_LIMITED :
+ HDMI_QUANTIZATION_RANGE_FULL;
+}
+EXPORT_SYMBOL(drm_default_rgb_quant_range);
+
static void drm_parse_hdmi_deep_color_info(struct drm_connector *connector,
const u8 *hdmi)
{
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 343e1d9fa761..d4befbbe834a 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1713,7 +1713,9 @@ intel_dp_compute_config(struct intel_encoder *encoder,
* VESA DisplayPort Ver.1.2a - 5.1.1.1 Video Colorimetry
*/
pipe_config->limited_color_range =
- bpp != 18 && drm_match_cea_mode(adjusted_mode) > 1;
+ bpp != 18 &&
+ drm_default_rgb_quant_range(adjusted_mode) ==
+ HDMI_QUANTIZATION_RANGE_LIMITED;
} else {
pipe_config->limited_color_range =
intel_dp->limited_color_range;
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 0bcfead14571..19bd13f53729 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1330,7 +1330,8 @@ bool intel_hdmi_compute_config(struct intel_encoder *encoder,
/* See CEA-861-E - 5.1 Default Encoding Parameters */
pipe_config->limited_color_range =
pipe_config->has_hdmi_sink &&
- drm_match_cea_mode(adjusted_mode) > 1;
+ drm_default_rgb_quant_range(adjusted_mode) ==
+ HDMI_QUANTIZATION_RANGE_LIMITED;
} else {
pipe_config->limited_color_range =
intel_hdmi->limited_color_range;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index c4cb2e26de32..d79466a42690 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -463,7 +463,9 @@ static void vc4_hdmi_encoder_mode_set(struct drm_encoder *encoder,
csc_ctl = VC4_SET_FIELD(VC4_HD_CSC_CTL_ORDER_BGR,
VC4_HD_CSC_CTL_ORDER);
- if (vc4_encoder->hdmi_monitor && drm_match_cea_mode(mode) > 1) {
+ if (vc4_encoder->hdmi_monitor &&
+ drm_default_rgb_quant_range(adjusted_mode) ==
+ HDMI_QUANTIZATION_RANGE_LIMITED) {
/* CEA VICs other than #1 requre limited range RGB
* output unless overridden by an AVI infoframe.
* Apply a colorspace conversion to squash 0-255 down
diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h
index 838eaf2b42e9..25cdf5f7a0d8 100644
--- a/include/drm/drm_edid.h
+++ b/include/drm/drm_edid.h
@@ -441,6 +441,8 @@ enum hdmi_picture_aspect drm_get_cea_aspect_ratio(const u8 video_code);
bool drm_detect_hdmi_monitor(struct edid *edid);
bool drm_detect_monitor_audio(struct edid *edid);
bool drm_rgb_quant_range_selectable(struct edid *edid);
+enum hdmi_quantization_range
+drm_default_rgb_quant_range(const struct drm_display_mode *mode);
int drm_add_modes_noedid(struct drm_connector *connector,
int hdisplay, int vdisplay);
void drm_set_preferred_mode(struct drm_connector *connector,
--
2.10.2
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