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From 4809cf80fdd964c413045e550fb137a18dc98ba2 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime@cerno.tech>
Date: Tue, 12 Jan 2021 15:55:07 +0100
Subject: [PATCH] drm/vc4: hdmi: Add full range RGB helper
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>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -108,6 +108,15 @@ static bool vc4_hdmi_mode_needs_scrambli
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;
@@ -1117,8 +1126,7 @@ static void vc4_hdmi_encoder_pre_crtc_en
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);
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