Now that we have a generic helper to fill the scrambling status, let's
use it.
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 46 +++++++++++-----------------------
drivers/gpu/drm/vc4/vc4_hdmi.h | 6 +++++
2 files changed, 21 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 5858058165a2..ba939dab35c0 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -99,11 +99,6 @@
#define HDMI_14_MAX_TMDS_CLK (340 * 1000 * 1000)
-static bool vc4_hdmi_mode_needs_scrambling(const struct drm_display_mode *mode)
-{
- return (mode->clock * 1000) > HDMI_14_MAX_TMDS_CLK;
-}
-
static int vc4_hdmi_debugfs_regs(struct seq_file *m, void *unused)
{
struct drm_info_node *node = (struct drm_info_node *)m->private;
@@ -296,7 +291,7 @@ static int vc4_hdmi_connector_get_modes(struct
drm_connector *connector)
const struct drm_display_mode *mode;
list_for_each_entry(mode, &connector->probed_modes, head) {
- if (vc4_hdmi_mode_needs_scrambling(mode)) {
+ if (drm_mode_hdmi_requires_scrambling(mode, 8)) {
drm_warn_once(drm, "The core clock cannot reach
frequencies high enough to support 4k @ 60Hz.");
drm_warn_once(drm, "Please change your
config.txt file to add hdmi_enable_4kp60.");
}
@@ -314,6 +309,14 @@ static int vc4_hdmi_connector_atomic_check(struct
drm_connector *connector,
struct drm_connector_state *new_state =
drm_atomic_get_new_connector_state(state, connector);
struct drm_crtc *crtc = new_state->crtc;
+ int ret;
+
+ ret = drm_atomic_helper_connector_hdmi_check(connector, state);
+ if (ret)
+ return ret;
+
+ if (new_state->hdmi_needs_scrambling !=
new_state->hdmi_needs_high_tmds_ratio)
+ return -EINVAL;
if (!crtc)
return 0;
@@ -603,37 +606,16 @@ static void vc4_hdmi_set_infoframes(struct drm_encoder
*encoder)
vc4_hdmi_set_hdr_infoframe(encoder);
}
-static bool vc4_hdmi_supports_scrambling(struct drm_encoder *encoder)
-{
- struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- struct drm_display_info *display = &vc4_hdmi->connector.display_info;
-
- lockdep_assert_held(&vc4_hdmi->mutex);
-
- if (!display->is_hdmi)
- return false;
-
- if (!display->hdmi.scdc.supported ||
- !display->hdmi.scdc.scrambling.supported)
- return false;
-
- return true;
-}
-
#define SCRAMBLING_POLLING_DELAY_MS 1000
static void vc4_hdmi_enable_scrambling(struct drm_encoder *encoder)
{
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
- const struct drm_display_mode *mode = &vc4_hdmi->saved_adjusted_mode;
unsigned long flags;
lockdep_assert_held(&vc4_hdmi->mutex);
- if (!vc4_hdmi_supports_scrambling(encoder))
- return;
-
- if (!vc4_hdmi_mode_needs_scrambling(mode))
+ if (!vc4_hdmi->scdc_needed)
return;
drm_scdc_set_high_tmds_clock_ratio(vc4_hdmi->ddc, true);
@@ -1245,6 +1227,7 @@ static void vc4_hdmi_encoder_atomic_mode_set(struct
drm_encoder *encoder,
struct vc4_hdmi *vc4_hdmi = encoder_to_vc4_hdmi(encoder);
mutex_lock(&vc4_hdmi->mutex);
+ vc4_hdmi->scdc_needed = conn_state->hdmi_needs_scrambling;
memcpy(&vc4_hdmi->saved_adjusted_mode,
&crtc_state->adjusted_mode,
sizeof(vc4_hdmi->saved_adjusted_mode));
@@ -1275,7 +1258,7 @@ static int vc4_hdmi_encoder_atomic_check(struct
drm_encoder *encoder,
* bandwidth). Slightly lower the frequency to bring it out of
* the WiFi range.
*/
- tmds_rate = pixel_rate * 10;
+ tmds_rate = pixel_rate * (conn_state->hdmi_needs_high_tmds_ratio ? 40 :
10);
if (vc4_hdmi->disable_wifi_frequencies &&
(tmds_rate >= WIFI_2_4GHz_CH1_MIN_FREQ &&
tmds_rate <= WIFI_2_4GHz_CH1_MAX_FREQ)) {
@@ -1297,7 +1280,7 @@ static int vc4_hdmi_encoder_atomic_check(struct
drm_encoder *encoder,
if (pixel_rate > vc4_hdmi->variant->max_pixel_clock)
return -EINVAL;
- if (vc4_hdmi->disable_4kp60 && (pixel_rate > HDMI_14_MAX_TMDS_CLK))
+ if (vc4_hdmi->disable_4kp60 && conn_state->hdmi_needs_scrambling)
return -EINVAL;
vc4_state->pixel_rate = pixel_rate;
@@ -1319,7 +1302,8 @@ vc4_hdmi_encoder_mode_valid(struct drm_encoder *encoder,
if ((mode->clock * 1000) > vc4_hdmi->variant->max_pixel_clock)
return MODE_CLOCK_HIGH;
- if (vc4_hdmi->disable_4kp60 && vc4_hdmi_mode_needs_scrambling(mode))
+ if (vc4_hdmi->disable_4kp60 &&
+ drm_mode_hdmi_requires_scrambling(mode, 8))
return MODE_CLOCK_HIGH;
return MODE_OK;
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.h b/drivers/gpu/drm/vc4/vc4_hdmi.h
index 4b9175f8aaaf..36f6a208b729 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.h
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.h
@@ -206,6 +206,12 @@ struct vc4_hdmi {
* the scrambler on? Protected by @mutex.
*/
bool scdc_enabled;
+
+ /**
+ * @scdc_needed: Is the HDMI controller needs to have the
+ * scrambling on? Protected by @mutex.
+ */
+ bool scdc_needed;
};
static inline struct vc4_hdmi *
--
2.33.1
