diff options
Diffstat (limited to 'drivers/gpu/drm/display/drm_hdmi_state_helper.c')
| -rw-r--r-- | drivers/gpu/drm/display/drm_hdmi_state_helper.c | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/drivers/gpu/drm/display/drm_hdmi_state_helper.c b/drivers/gpu/drm/display/drm_hdmi_state_helper.c index feb7a3a75981..c205f37da1e1 100644 --- a/drivers/gpu/drm/display/drm_hdmi_state_helper.c +++ b/drivers/gpu/drm/display/drm_hdmi_state_helper.c @@ -5,6 +5,7 @@ #include <drm/drm_edid.h> #include <drm/drm_print.h> +#include <drm/display/drm_hdmi_audio_helper.h> #include <drm/display/drm_hdmi_helper.h> #include <drm/display/drm_hdmi_state_helper.h> @@ -347,6 +348,8 @@ static int hdmi_generate_avi_infoframe(const struct drm_connector *connector, is_limited_range ? HDMI_QUANTIZATION_RANGE_LIMITED : HDMI_QUANTIZATION_RANGE_FULL; int ret; + infoframe->set = false; + ret = drm_hdmi_avi_infoframe_from_display_mode(frame, connector, mode); if (ret) return ret; @@ -376,6 +379,8 @@ static int hdmi_generate_spd_infoframe(const struct drm_connector *connector, &infoframe->data.spd; int ret; + infoframe->set = false; + ret = hdmi_spd_infoframe_init(frame, connector->hdmi.vendor, connector->hdmi.product); @@ -398,6 +403,8 @@ static int hdmi_generate_hdr_infoframe(const struct drm_connector *connector, &infoframe->data.drm; int ret; + infoframe->set = false; + if (connector->max_bpc < 10) return 0; @@ -425,6 +432,8 @@ static int hdmi_generate_hdmi_vendor_infoframe(const struct drm_connector *conne &infoframe->data.vendor.hdmi; int ret; + infoframe->set = false; + if (!info->has_hdmi_infoframe) return 0; @@ -494,6 +503,9 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, connector_state_get_mode(new_conn_state); int ret; + if (!new_conn_state->crtc || !new_conn_state->best_encoder) + return 0; + new_conn_state->hdmi.is_limited_range = hdmi_is_limited_range(connector, new_conn_state); ret = hdmi_compute_config(connector, new_conn_state, mode); @@ -521,6 +533,27 @@ int drm_atomic_helper_connector_hdmi_check(struct drm_connector *connector, } EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_check); +/** + * drm_hdmi_connector_mode_valid() - Check if mode is valid for HDMI connector + * @connector: DRM connector to validate the mode + * @mode: Display mode to validate + * + * Generic .mode_valid implementation for HDMI connectors. + */ +enum drm_mode_status +drm_hdmi_connector_mode_valid(struct drm_connector *connector, + const struct drm_display_mode *mode) +{ + unsigned long long clock; + + clock = drm_hdmi_compute_mode_clock(mode, 8, HDMI_COLORSPACE_RGB); + if (!clock) + return MODE_ERROR; + + return hdmi_clock_valid(connector, mode, clock); +} +EXPORT_SYMBOL(drm_hdmi_connector_mode_valid); + static int clear_device_infoframe(struct drm_connector *connector, enum hdmi_infoframe_type type) { @@ -748,3 +781,61 @@ drm_atomic_helper_connector_hdmi_clear_audio_infoframe(struct drm_connector *con return ret; } EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_clear_audio_infoframe); + +static void +drm_atomic_helper_connector_hdmi_update(struct drm_connector *connector, + enum drm_connector_status status) +{ + const struct drm_edid *drm_edid; + + if (status == connector_status_disconnected) { + // TODO: also handle CEC and scramber, HDMI sink disconnected. + drm_connector_hdmi_audio_plugged_notify(connector, false); + drm_edid_connector_update(connector, NULL); + return; + } + + if (connector->hdmi.funcs->read_edid) + drm_edid = connector->hdmi.funcs->read_edid(connector); + else + drm_edid = drm_edid_read(connector); + + drm_edid_connector_update(connector, drm_edid); + + drm_edid_free(drm_edid); + + if (status == connector_status_connected) { + // TODO: also handle CEC and scramber, HDMI sink is now connected. + drm_connector_hdmi_audio_plugged_notify(connector, true); + } +} + +/** + * drm_atomic_helper_connector_hdmi_hotplug - Handle the hotplug event for the HDMI connector + * @connector: A pointer to the HDMI connector + * @status: Connection status + * + * This function should be called as a part of the .detect() / .detect_ctx() + * callbacks, updating the HDMI-specific connector's data. + */ +void drm_atomic_helper_connector_hdmi_hotplug(struct drm_connector *connector, + enum drm_connector_status status) +{ + drm_atomic_helper_connector_hdmi_update(connector, status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_hotplug); + +/** + * drm_atomic_helper_connector_hdmi_force - HDMI Connector implementation of the force callback + * @connector: A pointer to the HDMI connector + * + * This function implements the .force() callback for the HDMI connectors. It + * can either be used directly as the callback or should be called from within + * the .force() callback implementation to maintain the HDMI-specific + * connector's data. + */ +void drm_atomic_helper_connector_hdmi_force(struct drm_connector *connector) +{ + drm_atomic_helper_connector_hdmi_update(connector, connector->status); +} +EXPORT_SYMBOL(drm_atomic_helper_connector_hdmi_force); |