diff options
| author | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-01-24 16:46:24 +0200 |
|---|---|---|
| committer | Ville Syrjälä <ville.syrjala@linux.intel.com> | 2023-01-25 12:23:48 +0200 |
| commit | 72715b54d4601dca6ebfdaee8a5d327d4441e95f (patch) | |
| tree | 39a9867627f2d19501685fc9784db1a63a987acb /drivers/gpu | |
| parent | b9c92d78151f330524e90ac3ed21568b87c7cec3 (diff) | |
drm/i915/sdvo: Do ELD hardware readout
Read out the ELD from the hw so the state checker can verify it.
v2: Check the "ELD valid" bit separately
v3: Fix ELD tx rate handling during readout
Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@intel.com>
Cc: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Jani Nikula <jani.nikula@intel.com> #v1
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230124144628.4649-10-ville.syrjala@linux.intel.com
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_sdvo.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_sdvo.c b/drivers/gpu/drm/i915/display/intel_sdvo.c index 68e5c7be2135..c469ec3e6042 100644 --- a/drivers/gpu/drm/i915/display/intel_sdvo.c +++ b/drivers/gpu/drm/i915/display/intel_sdvo.c @@ -1069,7 +1069,8 @@ static ssize_t intel_sdvo_read_infoframe(struct intel_sdvo *intel_sdvo, &tx_rate, 1)) return -ENXIO; - if (tx_rate == SDVO_HBUF_TX_DISABLED) + /* TX_DISABLED doesn't mean disabled for ELD */ + if (if_index != SDVO_HBUF_INDEX_ELD && tx_rate == SDVO_HBUF_TX_DISABLED) return 0; if (!intel_sdvo_get_hbuf_size(intel_sdvo, &hbuf_size)) @@ -1186,6 +1187,28 @@ static void intel_sdvo_get_avi_infoframe(struct intel_sdvo *intel_sdvo, frame->any.type, HDMI_INFOFRAME_TYPE_AVI); } +static void intel_sdvo_get_eld(struct intel_sdvo *intel_sdvo, + struct intel_crtc_state *crtc_state) +{ + struct drm_i915_private *i915 = to_i915(intel_sdvo->base.base.dev); + ssize_t len; + u8 val; + + if (!crtc_state->has_audio) + return; + + if (!intel_sdvo_get_value(intel_sdvo, SDVO_CMD_GET_AUDIO_STAT, &val, 1)) + return; + + if ((val & SDVO_AUDIO_ELD_VALID) == 0) + return; + + len = intel_sdvo_read_infoframe(intel_sdvo, SDVO_HBUF_INDEX_ELD, + crtc_state->eld, sizeof(crtc_state->eld)); + if (len < 0) + drm_dbg_kms(&i915->drm, "failed to read ELD\n"); +} + static bool intel_sdvo_set_tv_format(struct intel_sdvo *intel_sdvo, const struct drm_connector_state *conn_state) { @@ -1743,6 +1766,8 @@ static void intel_sdvo_get_config(struct intel_encoder *encoder, } intel_sdvo_get_avi_infoframe(intel_sdvo, pipe_config); + + intel_sdvo_get_eld(intel_sdvo, pipe_config); } static void intel_sdvo_disable_audio(struct intel_sdvo *intel_sdvo) |