From ca4627ecd3f93cd28ba3ae75af44e28224989b6a Mon Sep 17 00:00:00 2001 From: Maxime Ripard Date: Thu, 2 Dec 2021 16:58:17 +0100 Subject: [PATCH] drm/vc4: hdmi: Move clock validation to its own function Our code is doing the same clock rate validation in multiple instances. Let's create a helper to share the rate validation. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/vc4/vc4_hdmi.c | 26 +++++++++++++++----------- 1 file changed, 15 insertions(+), 11 deletions(-) --- a/drivers/gpu/drm/vc4/vc4_hdmi.c +++ b/drivers/gpu/drm/vc4/vc4_hdmi.c @@ -1250,6 +1250,19 @@ static void vc4_hdmi_encoder_atomic_mode mutex_unlock(&vc4_hdmi->mutex); } +static enum drm_mode_status +vc4_hdmi_encoder_clock_valid(const struct vc4_hdmi *vc4_hdmi, + unsigned long long clock) +{ + if (clock > vc4_hdmi->variant->max_pixel_clock) + return MODE_CLOCK_HIGH; + + if (vc4_hdmi->disable_4kp60 && clock > HDMI_14_MAX_TMDS_CLK) + return MODE_CLOCK_HIGH; + + return MODE_OK; +} + #define WIFI_2_4GHz_CH1_MIN_FREQ 2400000000ULL #define WIFI_2_4GHz_CH1_MAX_FREQ 2422000000ULL @@ -1294,10 +1307,7 @@ static int vc4_hdmi_encoder_atomic_check if (mode->flags & DRM_MODE_FLAG_DBLCLK) pixel_rate = pixel_rate * 2; - 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_encoder_clock_valid(vc4_hdmi, pixel_rate) != MODE_OK) return -EINVAL; vc4_state->pixel_rate = pixel_rate; @@ -1317,13 +1327,7 @@ vc4_hdmi_encoder_mode_valid(struct drm_e (mode->hsync_end % 2) || (mode->htotal % 2))) return MODE_H_ILLEGAL; - 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)) - return MODE_CLOCK_HIGH; - - return MODE_OK; + return vc4_hdmi_encoder_clock_valid(vc4_hdmi, mode->clock * 1000); } static const struct drm_encoder_helper_funcs vc4_hdmi_encoder_helper_funcs = {