diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-01-11 14:57:23 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2017-01-26 18:37:13 +0200 |
| commit | a2ce26f815b16500d390fc46381ec770192a5fbe (patch) | |
| tree | dcc171a7e43b36e1cbbfb3055ef06b14e0f75430 | |
| parent | c8127cf08ab9797c3954df463741ac47039d2b55 (diff) | |
drm/edid: Introduce drm_hdmi_avi_infoframe_quant_range()
Pull the logic to populate the quantization range information
in the AVI infoframe into a small helper. We'll be adding a bit
more logic to it, and having it in a central place seems like a
good idea since it's based on the CEA-861 spec.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170111125725.8086-4-ville.syrjala@linux.intel.com
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Eric Anholt <eric@anholt.net>
| -rw-r--r-- | drivers/gpu/drm/drm_edid.c | 26 | ||||
| -rw-r--r-- | drivers/gpu/drm/i915/intel_hdmi.c | 13 | ||||
| -rw-r--r-- | drivers/gpu/drm/vc4/vc4_hdmi.c | 14 | ||||
| -rw-r--r-- | include/drm/drm_edid.h | 4 |
4 files changed, 40 insertions, 17 deletions
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 9d0a506fc8ff1..bca73a80f156e 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -4292,6 +4292,32 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, } EXPORT_SYMBOL(drm_hdmi_avi_infoframe_from_display_mode); +/** + * drm_hdmi_avi_infoframe_quant_range() - fill the HDMI AVI infoframe + * quantization range information + * @frame: HDMI AVI infoframe + * @rgb_quant_range: RGB quantization range (Q) + * @rgb_quant_range_selectable: Sink support selectable RGB quantization range (QS) + */ +void +drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, + enum hdmi_quantization_range rgb_quant_range, + bool rgb_quant_range_selectable) +{ + /* + * CEA-861: + * "A Source shall not send a non-zero Q value that does not correspond + * to the default RGB Quantization Range for the transmitted Picture + * unless the Sink indicates support for the Q bit in a Video + * Capabilities Data Block." + */ + if (rgb_quant_range_selectable) + frame->quantization_range = rgb_quant_range; + else + frame->quantization_range = HDMI_QUANTIZATION_RANGE_DEFAULT; +} +EXPORT_SYMBOL(drm_hdmi_avi_infoframe_quant_range); + static enum hdmi_3d_structure s3d_structure_from_display_mode(const struct drm_display_mode *mode) { diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c index 19bd13f53729f..351f837b09a04 100644 --- a/drivers/gpu/drm/i915/intel_hdmi.c +++ b/drivers/gpu/drm/i915/intel_hdmi.c @@ -465,14 +465,11 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder, return; } - if (intel_hdmi->rgb_quant_range_selectable) { - if (crtc_state->limited_color_range) - frame.avi.quantization_range = - HDMI_QUANTIZATION_RANGE_LIMITED; - else - frame.avi.quantization_range = - HDMI_QUANTIZATION_RANGE_FULL; - } + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + crtc_state->limited_color_range ? + HDMI_QUANTIZATION_RANGE_LIMITED : + HDMI_QUANTIZATION_RANGE_FULL, + intel_hdmi->rgb_quant_range_selectable); intel_write_infoframe(encoder, crtc_state, &frame); } diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c index 5d49bf9481624..87b59469b606d 100644 --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -356,15 +356,11 @@ static void vc4_hdmi_set_avi_infoframe(struct drm_encoder *encoder) return; } - if (vc4_encoder->rgb_range_selectable) { - if (vc4_encoder->limited_rgb_range) { - frame.avi.quantization_range = - HDMI_QUANTIZATION_RANGE_LIMITED; - } else { - frame.avi.quantization_range = - HDMI_QUANTIZATION_RANGE_FULL; - } - } + drm_hdmi_avi_infoframe_quant_range(&frame.avi, + vc4_encoder->limited_rgb_range ? + HDMI_QUANTIZATION_RANGE_LIMITED : + HDMI_QUANTIZATION_RANGE_FULL, + vc4_encoder->rgb_range_selectable); vc4_hdmi_write_infoframe(encoder, &frame); } diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index 25cdf5f7a0d86..cfad4d89589f4 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -345,6 +345,10 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, int drm_hdmi_vendor_infoframe_from_display_mode(struct hdmi_vendor_infoframe *frame, const struct drm_display_mode *mode); +void +drm_hdmi_avi_infoframe_quant_range(struct hdmi_avi_infoframe *frame, + enum hdmi_quantization_range rgb_quant_range, + bool rgb_quant_range_selectable); /** * drm_eld_mnl - Get ELD monitor name length in bytes. |