phy: hdmi: Add color depth configuration

Extend the HDMI configuration options to allow managing bits per color
channel.  This is required by some PHY drivers such as
rockchip-samsung-hdptx.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Link: https://lore.kernel.org/r/20250318-phy-sam-hdptx-bpc-v6-2-8cb1678e7663@collabora.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/include/linux/phy/phy-hdmi.h b/include/linux/phy/phy-hdmi.h
index 6a696922bc7f29af63d88646701b2c0fcee5c885..f0ec963c6e84f1b7728acafc824dff191c6b873d 100644 (file)
--- a/include/linux/phy/phy-hdmi.h
+++ b/include/linux/phy/phy-hdmi.h
@@ -9,11 +9,13 @@
 /**
  * struct phy_configure_opts_hdmi - HDMI configuration set
  * @tmds_char_rate: HDMI TMDS Character Rate in Hertz.
+ * @bpc: Bits per color channel.
  *
  * This structure is used to represent the configuration state of a HDMI phy.
  */
 struct phy_configure_opts_hdmi {
        unsigned long long tmds_char_rate;
+       unsigned int bpc;
 };
 
 #endif /* __PHY_HDMI_H_ */