In order to implement a fallback mechanism to YUV422 when the pixel rate
is too high, let's move the pixel rate computation to a function of its
own that will be shared across two functions.
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
drivers/gpu/drm/vc4/vc4_hdmi.c | 36 +++++++++++++++++++++++-----------
1 file changed, 25 insertions(+), 11 deletions(-)
diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 407b468dab67..c4f91d39d91c 100644
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -991,22 +991,16 @@ static void vc4_hdmi_bridge_post_crtc_enable(struct
drm_bridge *bridge,
#define WIFI_2_4GHz_CH1_MIN_FREQ 2400000000ULL
#define WIFI_2_4GHz_CH1_MAX_FREQ 2422000000ULL
-static int vc4_hdmi_bridge_atomic_check(struct drm_bridge *bridge,
- struct drm_bridge_state *bridge_state,
- struct drm_crtc_state *crtc_state,
- struct drm_connector_state *conn_state)
+static unsigned long vc4_hdmi_calc_pixel_rate(struct drm_bridge *bridge,
+ struct drm_bridge_state
*bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state
*conn_state)
{
- struct vc4_hdmi_connector_state *vc4_state =
conn_state_to_vc4_hdmi_conn_state(conn_state);
struct drm_display_mode *mode = &crtc_state->adjusted_mode;
- struct vc4_hdmi *vc4_hdmi = bridge_to_vc4_hdmi(bridge);
unsigned long long pixel_rate = mode->clock * 1000;
+ struct vc4_hdmi *vc4_hdmi = bridge_to_vc4_hdmi(bridge);
unsigned long long tmds_rate;
- if (vc4_hdmi->variant->unsupported_odd_h_timings &&
- ((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
- (mode->hsync_end % 2) || (mode->htotal % 2)))
- return -EINVAL;
-
/*
* The 1440p@60 pixel rate is in the same range than the first
* WiFi channel (between 2.4GHz and 2.422GHz with 22MHz
@@ -1032,6 +1026,26 @@ static int vc4_hdmi_bridge_atomic_check(struct
drm_bridge *bridge,
if (mode->flags & DRM_MODE_FLAG_DBLCLK)
pixel_rate = pixel_rate * 2;
+ return pixel_rate;
+}
+
+static int vc4_hdmi_bridge_atomic_check(struct drm_bridge *bridge,
+ struct drm_bridge_state *bridge_state,
+ struct drm_crtc_state *crtc_state,
+ struct drm_connector_state *conn_state)
+{
+ struct vc4_hdmi *vc4_hdmi = bridge_to_vc4_hdmi(bridge);
+ struct vc4_hdmi_connector_state *vc4_state =
+ conn_state_to_vc4_hdmi_conn_state(conn_state);
+ struct drm_display_mode *mode = &crtc_state->adjusted_mode;
+ unsigned long long pixel_rate;
+
+ if (vc4_hdmi->variant->unsupported_odd_h_timings &&
+ ((mode->hdisplay % 2) || (mode->hsync_start % 2) ||
+ (mode->hsync_end % 2) || (mode->htotal % 2)))
+ return -EINVAL;
+
+ pixel_rate = vc4_hdmi_calc_pixel_rate(bridge, bridge_state, crtc_state,
conn_state);
if (pixel_rate > vc4_hdmi->variant->max_pixel_clock)
return -EINVAL;
--
2.30.2
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