On Tue, 11 Oct 2022, Ville Syrjala <ville.syrjala@xxxxxxxxxxxxxxx> wrote:
> From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
>
> Read out the ELD from the hardware buffer so that we can
> hook up the state checker to validate it.
>
> Cc: Chaitanya Kumar Borah <chaitanya.kumar.borah@xxxxxxxxx>
> Cc: Kai Vehmanen <kai.vehmanen@xxxxxxxxxxxxxxx>
> Cc: Takashi Iwai <tiwai@xxxxxxx>
> Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
Reviewed-by: Jani Nikula <jani.nikula@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/g4x_dp.c | 2 +
> drivers/gpu/drm/i915/display/g4x_hdmi.c | 2 +
> drivers/gpu/drm/i915/display/intel_audio.c | 88 ++++++++++++++++++++++
> drivers/gpu/drm/i915/display/intel_audio.h | 2 +
> drivers/gpu/drm/i915/display/intel_ddi.c | 2 +
> 5 files changed, 96 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/display/g4x_dp.c b/drivers/gpu/drm/i915/display/g4x_dp.c
> index e3e3d27ffb53..4fc7153ad35a 100644
> --- a/drivers/gpu/drm/i915/display/g4x_dp.c
> +++ b/drivers/gpu/drm/i915/display/g4x_dp.c
> @@ -397,6 +397,8 @@ static void intel_dp_get_config(struct intel_encoder *encoder,
>
> if (intel_dp_is_edp(intel_dp))
> intel_edp_fixup_vbt_bpp(encoder, pipe_config->pipe_bpp);
> +
> + intel_audio_codec_get_config(encoder, pipe_config);
> }
>
> static void
> diff --git a/drivers/gpu/drm/i915/display/g4x_hdmi.c b/drivers/gpu/drm/i915/display/g4x_hdmi.c
> index 8aadf96fa5e9..478878abada6 100644
> --- a/drivers/gpu/drm/i915/display/g4x_hdmi.c
> +++ b/drivers/gpu/drm/i915/display/g4x_hdmi.c
> @@ -142,6 +142,8 @@ static void intel_hdmi_get_config(struct intel_encoder *encoder,
> intel_read_infoframe(encoder, pipe_config,
> HDMI_INFOFRAME_TYPE_VENDOR,
> &pipe_config->infoframes.hdmi);
> +
> + intel_audio_codec_get_config(encoder, pipe_config);
> }
>
> static void g4x_enable_hdmi(struct intel_atomic_state *state,
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.c b/drivers/gpu/drm/i915/display/intel_audio.c
> index 39291e870635..328c47719fd8 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.c
> +++ b/drivers/gpu/drm/i915/display/intel_audio.c
> @@ -71,6 +71,8 @@ struct intel_audio_funcs {
> void (*audio_codec_disable)(struct intel_encoder *encoder,
> const struct intel_crtc_state *old_crtc_state,
> const struct drm_connector_state *old_conn_state);
> + void (*audio_codec_get_config)(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state);
> };
>
> /* DP N/M table */
> @@ -313,6 +315,27 @@ static int g4x_eld_buffer_size(struct drm_i915_private *i915)
> return REG_FIELD_GET(G4X_ELD_BUFFER_SIZE_MASK, tmp);
> }
>
> +static void g4x_audio_codec_get_config(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> + u32 *eld = (u32 *)crtc_state->eld;
> + int eld_buffer_size, len, i;
> + u32 tmp;
> +
> + tmp = intel_de_read(i915, G4X_AUD_CNTL_ST);
> + if ((tmp & G4X_ELD_VALID) == 0)
> + return;
> +
> + intel_de_rmw(i915, G4X_AUD_CNTL_ST, G4X_ELD_ADDRESS_MASK, 0);
> +
> + eld_buffer_size = g4x_eld_buffer_size(i915);
> + len = min_t(int, sizeof(crtc_state->eld) / 4, eld_buffer_size);
> +
> + for (i = 0; i < len; i++)
> + eld[i] = intel_de_read(i915, G4X_HDMIW_HDMIEDID);
> +}
> +
> static void g4x_audio_codec_disable(struct intel_encoder *encoder,
> const struct intel_crtc_state *old_crtc_state,
> const struct drm_connector_state *old_conn_state)
> @@ -467,6 +490,29 @@ static int hsw_eld_buffer_size(struct drm_i915_private *i915,
> return REG_FIELD_GET(IBX_ELD_BUFFER_SIZE_MASK, tmp);
> }
>
> +static void hsw_audio_codec_get_config(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> + enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
> + u32 *eld = (u32 *)crtc_state->eld;
> + int eld_buffer_size, len, i;
> + u32 tmp;
> +
> + tmp = intel_de_read(i915, HSW_AUD_PIN_ELD_CP_VLD);
> + if ((tmp & AUDIO_ELD_VALID(cpu_transcoder)) == 0)
> + return;
> +
> + intel_de_rmw(i915, HSW_AUD_DIP_ELD_CTRL(cpu_transcoder),
> + IBX_ELD_ADDRESS_MASK, 0);
> +
> + eld_buffer_size = hsw_eld_buffer_size(i915, cpu_transcoder);
> + len = min_t(int, sizeof(crtc_state->eld) / 4, eld_buffer_size);
> +
> + for (i = 0; i < len; i++)
> + eld[i] = intel_de_read(i915, HSW_AUD_EDID_DATA(cpu_transcoder));
> +}
> +
> static void hsw_audio_codec_disable(struct intel_encoder *encoder,
> const struct intel_crtc_state *old_crtc_state,
> const struct drm_connector_state *old_conn_state)
> @@ -700,6 +746,33 @@ static int ilk_eld_buffer_size(struct drm_i915_private *i915,
> return REG_FIELD_GET(IBX_ELD_BUFFER_SIZE_MASK, tmp);
> }
>
> +static void ilk_audio_codec_get_config(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> + struct drm_i915_private *i915 = to_i915(crtc->base.dev);
> + u32 *eld = (u32 *)crtc_state->eld;
> + enum port port = encoder->port;
> + enum pipe pipe = crtc->pipe;
> + int eld_buffer_size, len, i;
> + struct ilk_audio_regs regs;
> + u32 tmp;
> +
> + ilk_audio_regs_init(i915, pipe, ®s);
> +
> + tmp = intel_de_read(i915, regs.aud_cntrl_st2);
> + if ((tmp & IBX_ELD_VALID(port)) == 0)
> + return;
> +
> + intel_de_rmw(i915, regs.aud_cntl_st, IBX_ELD_ADDRESS_MASK, 0);
> +
> + eld_buffer_size = ilk_eld_buffer_size(i915, pipe);
> + len = min_t(int, sizeof(crtc_state->eld) / 4, eld_buffer_size);
> +
> + for (i = 0; i < len; i++)
> + eld[i] = intel_de_read(i915, regs.hdmiw_hdmiedid);
> +}
> +
> static void ilk_audio_codec_disable(struct intel_encoder *encoder,
> const struct intel_crtc_state *old_crtc_state,
> const struct drm_connector_state *old_conn_state)
> @@ -919,19 +992,34 @@ void intel_audio_codec_disable(struct intel_encoder *encoder,
> intel_lpe_audio_notify(i915, pipe, port, NULL, 0, false);
> }
>
> +void intel_audio_codec_get_config(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state)
> +{
> + struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> +
> + if (!crtc_state->has_audio)
> + return;
> +
> + if (i915->display.funcs.audio)
> + i915->display.funcs.audio->audio_codec_get_config(encoder, crtc_state);
> +}
> +
> static const struct intel_audio_funcs g4x_audio_funcs = {
> .audio_codec_enable = g4x_audio_codec_enable,
> .audio_codec_disable = g4x_audio_codec_disable,
> + .audio_codec_get_config = g4x_audio_codec_get_config,
> };
>
> static const struct intel_audio_funcs ilk_audio_funcs = {
> .audio_codec_enable = ilk_audio_codec_enable,
> .audio_codec_disable = ilk_audio_codec_disable,
> + .audio_codec_get_config = ilk_audio_codec_get_config,
> };
>
> static const struct intel_audio_funcs hsw_audio_funcs = {
> .audio_codec_enable = hsw_audio_codec_enable,
> .audio_codec_disable = hsw_audio_codec_disable,
> + .audio_codec_get_config = hsw_audio_codec_get_config,
> };
>
> /**
> diff --git a/drivers/gpu/drm/i915/display/intel_audio.h b/drivers/gpu/drm/i915/display/intel_audio.h
> index b9070f336bcf..e35108b7dbc0 100644
> --- a/drivers/gpu/drm/i915/display/intel_audio.h
> +++ b/drivers/gpu/drm/i915/display/intel_audio.h
> @@ -23,6 +23,8 @@ void intel_audio_codec_enable(struct intel_encoder *encoder,
> void intel_audio_codec_disable(struct intel_encoder *encoder,
> const struct intel_crtc_state *old_crtc_state,
> const struct drm_connector_state *old_conn_state);
> +void intel_audio_codec_get_config(struct intel_encoder *encoder,
> + struct intel_crtc_state *crtc_state);
> void intel_audio_cdclk_change_pre(struct drm_i915_private *dev_priv);
> void intel_audio_cdclk_change_post(struct drm_i915_private *dev_priv);
> void intel_audio_init(struct drm_i915_private *dev_priv);
> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 971356237eca..d7f1bc75cf26 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -3463,6 +3463,8 @@ static void intel_ddi_get_config(struct intel_encoder *encoder,
> intel_read_dp_sdp(encoder, pipe_config, DP_SDP_VSC);
>
> intel_psr_get_config(encoder, pipe_config);
> +
> + intel_audio_codec_get_config(encoder, pipe_config);
> }
>
> void intel_ddi_get_clock(struct intel_encoder *encoder,
--
Jani Nikula, Intel Open Source Graphics Center
