kernel.git/drivers/gpu/drm/msm/hdmi/hdmi.c, branch linux-rolling-stable

drm/msm: move KMS driver data to msm_kms

2025-07-05T14:13:35Z

Data for HDMI, DSI and DP blocks only makes sense for the KMS parts of the driver. Move corresponding data pointers from struct msm_drm_private to struct msm_kms. Suggested-by: Abhinav Kumar Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/662580/ Signed-off-by: Rob Clark

drm/msm/hdmi: wire in hpd_enable/hpd_disable bridge ops

2025-05-12T16:18:48Z

The HDMI driver already has msm_hdmi_hpd_enable() and msm_hdmi_hpd_disable() functions. Wire them into the msm_hdmi_bridge_funcs, so that HPD can be enabled and disabled dynamically rather than always having HPD events generation enabled. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-13-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: ensure that HDMI is up if HPD is requested

2025-05-12T16:18:48Z

The HDMI block needs to be enabled to properly generate HPD events. Make sure it is not turned off in the disable paths if HPD delivery is enabled. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651722/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-12-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: expand the HDMI_CFG macro

2025-05-12T16:18:48Z

Expand the HDMI_CFG() macro in HDMI config description. It has no added value other than hiding some boilerplate declarations. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651724/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-11-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: rename hpd_clks to pwr_clks

2025-05-12T16:18:48Z

As these clocks are now used in the runtime PM callbacks, they have no connection to 'HPD'. Rename corresponding fields to follow clocks purpose, to power up the HDMI controller. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651720/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-10-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: implement proper runtime PM handling

2025-05-12T16:18:48Z

It is completely not obvious, but the so-called 'hpd' clocks and regulators are required for the HDMI host to function properly. Merge pwr and hpd regulators. Use regulators, clocks and pinctrl to implement proper runtime PM callbacks. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651715/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-9-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: switch to clk_bulk API

2025-05-12T16:18:48Z

The last platform using legacy clock names for HDMI block (APQ8064) switched to new clock names in 5.16. It's time to stop caring about old DT, drop hand-coded helpers and switch to clk_bulk_* API. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651716/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-6-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: drop clock frequency assignment

2025-05-12T16:18:48Z

The only clock which has frequency being set through hpd_freqs is the "core" aka MDSS_HDMI_CLK clock. It always has the specified frequency, so we can drop corresponding clk_set_rate() call together with the hpd_freq infrastructure. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651717/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-5-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: simplify extp clock handling

2025-05-12T16:18:48Z

With the extp being the only "power" clock left, remove the surrounding loops and handle the extp clock directly. Reviewed-by: Jessica Zhang Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651710/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-4-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/msm/hdmi: move the alt_iface clock to the hpd list

2025-05-12T16:18:48Z

According to the vendor kernel [1] , the alt_iface clock should be enabled together with the rest of HPD clocks, to make HPD to work properly. [1] https://git.codelinaro.org/clo/la/kernel/msm-3.18/-/commit/e07a5487e521e57f76083c0a6e2f995414ac6d03 Reviewed-by: Jessica Zhang Reviewed-by: Konrad Dybcio Signed-off-by: Dmitry Baryshkov Patchwork: https://patchwork.freedesktop.org/patch/651709/ Link: https://lore.kernel.org/r/20250505-fd-hdmi-hpd-v5-3-48541f76318c@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov