Add support for an ACPI based integrated privacy screen that is available on some systems.
Signed-off-by: Rajat Jain rajatja@google.com --- v8: - separate the APCI privacy screen into a separate patch. - Don't destroy the property if there is no privacy screen (because drm core doesn't like destroying property in late_register()). - The setting change needs to be committed in ->update_pipe() for ddi.c as well as dp.c and both of them call intel_dp_add_properties() v7: Look for ACPI node in ->late_register() hook. Do the scan only once per drm_device (instead of 1 per drm_connector) v6: Addressed minor comments from Jani at https://lkml.org/lkml/2020/1/24/1143 - local variable renamed. - used drm_dbg_kms() - used acpi_device_handle() - Used opaque type acpi_handle instead of void* v5: same as v4 v4: Same as v3 v3: fold the code into existing acpi_device_id_update() function v2: formed by splitting the original patch into ACPI lookup, and privacy screen property. Also move it into i915 now that I found existing code in i915 that can be re-used.
drivers/gpu/drm/i915/display/intel_atomic.c | 2 ++ drivers/gpu/drm/i915/display/intel_ddi.c | 1 + drivers/gpu/drm/i915/display/intel_dp.c | 34 ++++++++++++++++++++- drivers/gpu/drm/i915/display/intel_dp.h | 5 +++ 4 files changed, 41 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_atomic.c b/drivers/gpu/drm/i915/display/intel_atomic.c index d043057d2fa03..9898d8980e7ce 100644 --- a/drivers/gpu/drm/i915/display/intel_atomic.c +++ b/drivers/gpu/drm/i915/display/intel_atomic.c @@ -150,6 +150,8 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn, new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio || new_conn_state->base.content_type != old_conn_state->base.content_type || new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode || + new_conn_state->base.privacy_screen_status != + old_conn_state->base.privacy_screen_status || !blob_equal(new_conn_state->base.hdr_output_metadata, old_conn_state->base.hdr_output_metadata)) crtc_state->mode_changed = true; diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c index 73d0f4648c06a..69a5423216dc5 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi.c +++ b/drivers/gpu/drm/i915/display/intel_ddi.c @@ -3708,6 +3708,7 @@ static void intel_ddi_update_pipe(struct intel_encoder *encoder, if (!intel_crtc_has_type(crtc_state, INTEL_OUTPUT_HDMI)) intel_ddi_update_pipe_dp(encoder, crtc_state, conn_state);
+ intel_dp_update_privacy_screen(encoder, crtc_state, conn_state); intel_hdcp_update_pipe(encoder, crtc_state, conn_state); }
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index 3ddc424b028c1..5f33ebb466135 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -62,6 +62,7 @@ #include "intel_lspcon.h" #include "intel_lvds.h" #include "intel_panel.h" +#include "intel_privacy_screen.h" #include "intel_psr.h" #include "intel_sideband.h" #include "intel_tc.h" @@ -5886,6 +5887,10 @@ intel_dp_connector_register(struct drm_connector *connector) dev_priv->acpi_scan_done = true; }
+ /* Check for integrated Privacy screen support */ + if (intel_privacy_screen_present(to_intel_connector(connector))) + drm_connector_attach_privacy_screen_property(connector); + DRM_DEBUG_KMS("registering %s bus for %s\n", intel_dp->aux.name, connector->kdev->kobj.name);
@@ -6883,6 +6888,33 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect connector->state->scaling_mode = DRM_MODE_SCALE_ASPECT;
} + + /* + * Created here, but depending on result of probing for privacy-screen + * in intel_dp_connector_register(), gets attached in that function. + * Need to create here because the drm core doesn't like creating + * properties during ->late_register(). + */ + drm_connector_create_privacy_screen_property(connector); +} + +void +intel_dp_update_privacy_screen(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state) +{ + struct drm_connector *connector = conn_state->connector; + + intel_privacy_screen_set_val(to_intel_connector(connector), + conn_state->privacy_screen_status); +} + +static void intel_dp_update_pipe(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state) +{ + intel_dp_update_privacy_screen(encoder, crtc_state, conn_state); + intel_panel_update_backlight(encoder, crtc_state, conn_state); }
static void intel_dp_init_panel_power_timestamps(struct intel_dp *intel_dp) @@ -7826,7 +7858,7 @@ bool intel_dp_init(struct drm_i915_private *dev_priv, intel_encoder->compute_config = intel_dp_compute_config; intel_encoder->get_hw_state = intel_dp_get_hw_state; intel_encoder->get_config = intel_dp_get_config; - intel_encoder->update_pipe = intel_panel_update_backlight; + intel_encoder->update_pipe = intel_dp_update_pipe; intel_encoder->suspend = intel_dp_encoder_suspend; if (IS_CHERRYVIEW(dev_priv)) { intel_encoder->pre_pll_enable = chv_dp_pre_pll_enable; diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h index 0c7be8ed1423a..e4594e27ce5a8 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.h +++ b/drivers/gpu/drm/i915/display/intel_dp.h @@ -123,4 +123,9 @@ static inline unsigned int intel_dp_unused_lane_mask(int lane_count)
u32 intel_dp_mode_to_fec_clock(u32 mode_clock);
+void +intel_dp_update_privacy_screen(struct intel_encoder *encoder, + const struct intel_crtc_state *crtc_state, + const struct drm_connector_state *conn_state); + #endif /* __INTEL_DP_H__ */