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drm/i915: Add AVI infoframe support for LSPCON

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In order to pass AVI infoframes to LSPCON devices, a source has to
write them in a vendor recommended method and location.

This patch series:
- adds generic LSPCON infoframe setup functions.
- registers these functions into existing AVI infoframe framework.
- triggers these functions from modeset sequence.

Next patches in the series will add vendor specific code.

V2: Added new parameter to align with new definition of
    drm_hdmi_avi_infoframe_quant_range
V3: Added r-b from Maarten (for V2)
    Added new parameter output_format in struct lspcon to accommodate
    Ville's review comments on last patch of the series
V4: Addressed Ville's review comment
    - Do not add output_format in LSPCON state, as its non-atomic. Add
      this into CRTC state (added in a later patch).
V5: Rebase
V6: Rebase
V7: Rebase
V8: Rebase
V9: Rebase
V10: Rebase
V11: Accommodated rebasing changes in intel_git_port fptrs (set_infoframes and infoframe_enabled)

Cc: Ville Syrjala <ville.syrjala@linux.intel.com>
Cc: Imre Deak <imre.deak@linux.intel.com>
Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Signed-off-by: Shashank Sharma <shashank.sharma@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1539325394-20788-5-git-send-email-shashank.sharma@intel.com
This commit is contained in:
Shashank Sharma
2018-10-12 11:53:11 +05:30
committed by Jani Nikula
parent 96e35598ce
commit 06c812d7c5
4 changed files with 86 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

49
drivers/gpu/drm/i915/intel_lspcon.c
View File

@@ -234,6 +234,55 @@ static void lspcon_resume_in_pcon_wa(struct intel_lspcon *lspcon)
DRM_DEBUG_KMS("LSPCON DP descriptor mismatch after resume\n");
}
void lspcon_set_infoframes(struct intel_encoder *encoder,
bool enable,
const struct intel_crtc_state *crtc_state,
const struct drm_connector_state *conn_state)
{
ssize_t ret;
union hdmi_infoframe frame;
uint8_t buf[VIDEO_DIP_DATA_SIZE];
struct intel_digital_port *dig_port = enc_to_dig_port(&encoder->base);
struct intel_lspcon *lspcon = &dig_port->lspcon;
struct intel_dp *intel_dp = &dig_port->dp;
struct drm_connector *connector = &intel_dp->attached_connector->base;
const struct drm_display_mode *mode = &crtc_state->base.adjusted_mode;
bool is_hdmi2_sink = connector->display_info.hdmi.scdc.supported;
if (!lspcon->active) {
DRM_ERROR("Writing infoframes while LSPCON disabled ?\n");
return;
}
ret = drm_hdmi_avi_infoframe_from_display_mode(&frame.avi,
mode, is_hdmi2_sink);
if (ret < 0) {
DRM_ERROR("couldn't fill AVI infoframe\n");
return;
}
drm_hdmi_avi_infoframe_quant_range(&frame.avi, mode,
crtc_state->limited_color_range ?
HDMI_QUANTIZATION_RANGE_LIMITED :
HDMI_QUANTIZATION_RANGE_FULL,
false, is_hdmi2_sink);
ret = hdmi_infoframe_pack(&frame, buf, sizeof(buf));
if (ret < 0) {
DRM_ERROR("Failed to pack AVI IF\n");
return;
}
dig_port->write_infoframe(encoder, crtc_state, HDMI_INFOFRAME_TYPE_AVI,
buf, ret);
}
bool lspcon_infoframe_enabled(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config)
{
return enc_to_intel_lspcon(&encoder->base)->active;
}
void lspcon_resume(struct intel_lspcon *lspcon)
{
enum drm_lspcon_mode expected_mode;