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drm/vc4: hdmi: Add full range RGB helper

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We're going to need to tell whether we want to run with a full or
limited range RGB output in multiple places in the code, so let's create
a helper that will return whether we need with full range or not.

Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220120151625.594595-6-maxime@cerno.tech
This commit is contained in:
Maxime Ripard 2022-01-20 16:16:14 +01:00
parent c03d0b52ff
commit a649cc821a
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GPG Key ID: E3EF0D6F671851C5
1 changed files with 10 additions and 2 deletions
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12
drivers/gpu/drm/vc4/vc4_hdmi.c
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@ -104,6 +104,15 @@ static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode)
return (mode->clock * 1000) > HDMI_14_MAX_TMDS_CLK;
}
static bool vc4_hdmi_is_full_range_rgb(struct vc4_hdmi *vc4_hdmi,
const struct drm_display_mode *mode)
{
struct vc4_hdmi_encoder *vc4_encoder = &vc4_hdmi->encoder;
return !vc4_encoder->hdmi_monitor ||
drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_FULL;
}
static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
@ -1119,8 +1128,7 @@ static void vc4_hdmi_encoder_pre_crtc_enable(struct drm_encoder *encoder,
mutex_lock(&vc4_hdmi->mutex);
if (vc4_encoder->hdmi_monitor &&
drm_default_rgb_quant_range(mode) == HDMI_QUANTIZATION_RANGE_LIMITED) {
if (!vc4_hdmi_is_full_range_rgb(vc4_hdmi, mode)) {
if (vc4_hdmi->variant->csc_setup)
vc4_hdmi->variant->csc_setup(vc4_hdmi, true);