> -----Original Message-----
> From: Intel-gfx <intel-gfx-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of Manasi
> Navare
> Sent: Friday, November 6, 2020 9:34 AM
> To: intel-gfx@xxxxxxxxxxxxxxxxxxxxx
> Subject: [PATCH v15 09/14] drm/i915/dp: Modify VDSC helpers to
> configure DSC for Bigjoiner slave
>
> Make vdsc work when no output is enabled. The big joiner needs VDSC on the
> slave, so enable it and set the appropriate bits.
> So remove encoder usage from dsc functions.
>
> Signed-off-by: Manasi Navare <manasi.d.navare@xxxxxxxxx>
Changes looks good to me.
Reviewed-by: Animesh Manna <animesh.manna@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/display/icl_dsi.c | 2 +-
> drivers/gpu/drm/i915/display/intel_ddi.c | 9 +-
> drivers/gpu/drm/i915/display/intel_display.c | 3 +
> drivers/gpu/drm/i915/display/intel_dp.c | 6 +-
> drivers/gpu/drm/i915/display/intel_vdsc.c | 201 ++++++++++---------
> drivers/gpu/drm/i915/display/intel_vdsc.h | 6 +-
> 6 files changed, 110 insertions(+), 117 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c
> b/drivers/gpu/drm/i915/display/icl_dsi.c
> index 096652921453..0fecf372be11 100644
> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
> @@ -1492,7 +1492,7 @@ static void gen11_dsi_get_config(struct intel_encoder
> *encoder,
> struct intel_crtc *crtc = to_intel_crtc(pipe_config->uapi.crtc);
> struct intel_dsi *intel_dsi = enc_to_intel_dsi(encoder);
>
> - intel_dsc_get_config(encoder, pipe_config);
> + intel_dsc_get_config(pipe_config);
>
> /* FIXME: adapt icl_ddi_clock_get() for DSI and use that? */
> pipe_config->port_clock = intel_dpll_get_freq(i915, diff --git
> a/drivers/gpu/drm/i915/display/intel_ddi.c
> b/drivers/gpu/drm/i915/display/intel_ddi.c
> index 19b16517a502..fbfb8935f10f 100644
> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
> @@ -2216,13 +2216,6 @@ static void intel_ddi_get_power_domains(struct
> intel_encoder *encoder,
> intel_phy_is_tc(dev_priv, phy))
> intel_display_power_get(dev_priv,
>
> intel_ddi_main_link_aux_domain(dig_port));
> -
> - /*
> - * VDSC power is needed when DSC is enabled
> - */
> - if (crtc_state->dsc.compression_enable)
> - intel_display_power_get(dev_priv,
> - intel_dsc_power_domain(crtc_state));
> }
>
> void intel_ddi_enable_pipe_clock(struct intel_encoder *encoder, @@ -4408,7
> +4401,7 @@ void intel_ddi_get_config(struct intel_encoder *encoder,
> if (drm_WARN_ON(&dev_priv->drm,
> transcoder_is_dsi(cpu_transcoder)))
> return;
>
> - intel_dsc_get_config(encoder, pipe_config);
> + intel_dsc_get_config(pipe_config);
>
> temp = intel_de_read(dev_priv,
> TRANS_DDI_FUNC_CTL(cpu_transcoder));
> if (temp & TRANS_DDI_PHSYNC)
> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
> b/drivers/gpu/drm/i915/display/intel_display.c
> index 2fded062d810..e70e8aaf6a8c 100644
> --- a/drivers/gpu/drm/i915/display/intel_display.c
> +++ b/drivers/gpu/drm/i915/display/intel_display.c
> @@ -7602,6 +7602,9 @@ static u64 get_crtc_power_domains(struct
> intel_crtc_state *crtc_state)
> if (crtc_state->shared_dpll)
> mask |= BIT_ULL(POWER_DOMAIN_DISPLAY_CORE);
>
> + if (crtc_state->dsc.compression_enable)
> + mask |= BIT_ULL(intel_dsc_power_domain(crtc_state));
> +
> return mask;
> }
>
> diff --git a/drivers/gpu/drm/i915/display/intel_dp.c
> b/drivers/gpu/drm/i915/display/intel_dp.c
> index 1bdcc3cd88c1..b5cd9c848d8f 100644
> --- a/drivers/gpu/drm/i915/display/intel_dp.c
> +++ b/drivers/gpu/drm/i915/display/intel_dp.c
> @@ -2100,12 +2100,10 @@ static bool intel_dp_supports_fec(struct intel_dp
> *intel_dp, static bool intel_dp_supports_dsc(struct intel_dp *intel_dp,
> const struct intel_crtc_state *crtc_state) {
> - struct intel_encoder *encoder = &dp_to_dig_port(intel_dp)->base;
> -
> - if (!intel_dp_is_edp(intel_dp) && !crtc_state->fec_enable)
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DP) &&
> +!crtc_state->fec_enable)
> return false;
>
> - return intel_dsc_source_support(encoder, crtc_state) &&
> + return intel_dsc_source_support(crtc_state) &&
> drm_dp_sink_supports_dsc(intel_dp->dsc_dpcd);
> }
>
> diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.c
> b/drivers/gpu/drm/i915/display/intel_vdsc.c
> index c5735c365659..e2716a67b281 100644
> --- a/drivers/gpu/drm/i915/display/intel_vdsc.c
> +++ b/drivers/gpu/drm/i915/display/intel_vdsc.c
> @@ -332,11 +332,10 @@ static const struct rc_parameters
> *get_rc_params(u16 compressed_bpp,
> return &rc_parameters[row_index][column_index];
> }
>
> -bool intel_dsc_source_support(struct intel_encoder *encoder,
> - const struct intel_crtc_state *crtc_state)
> +bool intel_dsc_source_support(const struct intel_crtc_state
> +*crtc_state)
> {
> const struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_i915_private *i915 = to_i915(encoder->base.dev);
> + struct drm_i915_private *i915 = to_i915(crtc->base.dev);
> enum transcoder cpu_transcoder = crtc_state->cpu_transcoder;
> enum pipe pipe = crtc->pipe;
>
> @@ -490,11 +489,10 @@ intel_dsc_power_domain(const struct
> intel_crtc_state *crtc_state)
> return POWER_DOMAIN_TRANSCODER_VDSC_PW2; }
>
> -static void intel_dsc_pps_configure(struct intel_encoder *encoder,
> - const struct intel_crtc_state *crtc_state)
> +static void intel_dsc_pps_configure(const struct intel_crtc_state
> +*crtc_state)
> {
> struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> const struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
> enum pipe pipe = crtc->pipe;
> u32 pps_val = 0;
> @@ -503,6 +501,9 @@ static void intel_dsc_pps_configure(struct intel_encoder
> *encoder,
> u8 num_vdsc_instances = (crtc_state->dsc.dsc_split) ? 2 : 1;
> int i = 0;
>
> + if (crtc_state->bigjoiner)
> + num_vdsc_instances *= 2;
> +
> /* Populate PICTURE_PARAMETER_SET_0 registers */
> pps_val = DSC_VER_MAJ | vdsc_cfg->dsc_version_minor <<
> DSC_VER_MIN_SHIFT |
> @@ -973,55 +974,6 @@ static void intel_dsc_pps_configure(struct
> intel_encoder *encoder,
> }
> }
>
> -void intel_dsc_get_config(struct intel_encoder *encoder,
> - struct intel_crtc_state *crtc_state)
> -{
> - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> - struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
> - struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - enum pipe pipe = crtc->pipe;
> - enum intel_display_power_domain power_domain;
> - intel_wakeref_t wakeref;
> - u32 dss_ctl1, dss_ctl2, val;
> -
> - if (!intel_dsc_source_support(encoder, crtc_state))
> - return;
> -
> - power_domain = intel_dsc_power_domain(crtc_state);
> -
> - wakeref = intel_display_power_get_if_enabled(dev_priv,
> power_domain);
> - if (!wakeref)
> - return;
> -
> - if (!is_pipe_dsc(crtc_state)) {
> - dss_ctl1 = intel_de_read(dev_priv, DSS_CTL1);
> - dss_ctl2 = intel_de_read(dev_priv, DSS_CTL2);
> - } else {
> - dss_ctl1 = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL1(pipe));
> - dss_ctl2 = intel_de_read(dev_priv, ICL_PIPE_DSS_CTL2(pipe));
> - }
> -
> - crtc_state->dsc.compression_enable = dss_ctl2 &
> LEFT_BRANCH_VDSC_ENABLE;
> - if (!crtc_state->dsc.compression_enable)
> - goto out;
> -
> - crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE)
> &&
> - (dss_ctl1 & JOINER_ENABLE);
> -
> - /* FIXME: add more state readout as needed */
> -
> - /* PPS1 */
> - if (!is_pipe_dsc(crtc_state))
> - val = intel_de_read(dev_priv,
> DSCA_PICTURE_PARAMETER_SET_1);
> - else
> - val = intel_de_read(dev_priv,
> -
> ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe));
> - vdsc_cfg->bits_per_pixel = val;
> - crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4;
> -out:
> - intel_display_power_put(dev_priv, power_domain, wakeref);
> -}
> -
> static void intel_dsc_dsi_pps_write(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state) {
> @@ -1060,77 +1012,126 @@ static void intel_dsc_dp_pps_write(struct
> intel_encoder *encoder,
> sizeof(dp_dsc_pps_sdp));
> }
>
> +static i915_reg_t dss_ctl1_reg(const struct intel_crtc_state
> +*crtc_state) {
> + enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
> +
> + if (crtc_state->cpu_transcoder == TRANSCODER_EDP)
> + return DSS_CTL1;
> +
> + return ICL_PIPE_DSS_CTL1(pipe);
> +}
> +
> +static i915_reg_t dss_ctl2_reg(const struct intel_crtc_state
> +*crtc_state) {
> + enum pipe pipe = to_intel_crtc(crtc_state->uapi.crtc)->pipe;
> +
> + if (crtc_state->cpu_transcoder == TRANSCODER_EDP)
> + return DSS_CTL2;
> +
> + return ICL_PIPE_DSS_CTL2(pipe);
> +}
> +
> void intel_dsc_enable(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state) {
> struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> - struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
> - enum pipe pipe = crtc->pipe;
> - i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> u32 dss_ctl1_val = 0;
> u32 dss_ctl2_val = 0;
>
> if (!crtc_state->dsc.compression_enable)
> return;
>
> - /* Enable Power wells for VDSC/joining */
> - intel_display_power_get(dev_priv,
> - intel_dsc_power_domain(crtc_state));
> -
> - intel_dsc_pps_configure(encoder, crtc_state);
> + intel_dsc_pps_configure(crtc_state);
>
> - if (encoder->type == INTEL_OUTPUT_DSI)
> - intel_dsc_dsi_pps_write(encoder, crtc_state);
> - else
> - intel_dsc_dp_pps_write(encoder, crtc_state);
> -
> - if (!is_pipe_dsc(crtc_state)) {
> - dss_ctl1_reg = DSS_CTL1;
> - dss_ctl2_reg = DSS_CTL2;
> - } else {
> - dss_ctl1_reg = ICL_PIPE_DSS_CTL1(pipe);
> - dss_ctl2_reg = ICL_PIPE_DSS_CTL2(pipe);
> + if (!crtc_state->bigjoiner_slave) {
> + if (intel_crtc_has_type(crtc_state, INTEL_OUTPUT_DSI))
> + intel_dsc_dsi_pps_write(encoder, crtc_state);
> + else
> + intel_dsc_dp_pps_write(encoder, crtc_state);
> }
> +
> dss_ctl2_val |= LEFT_BRANCH_VDSC_ENABLE;
> if (crtc_state->dsc.dsc_split) {
> dss_ctl2_val |= RIGHT_BRANCH_VDSC_ENABLE;
> dss_ctl1_val |= JOINER_ENABLE;
> }
> - intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1_val);
> - intel_de_write(dev_priv, dss_ctl2_reg, dss_ctl2_val);
> + if (crtc_state->bigjoiner) {
> + dss_ctl1_val |= BIG_JOINER_ENABLE;
> + if (!crtc_state->bigjoiner_slave)
> + dss_ctl1_val |= MASTER_BIG_JOINER_ENABLE;
> + }
> + intel_de_write(dev_priv, dss_ctl1_reg(crtc_state), dss_ctl1_val);
> + intel_de_write(dev_priv, dss_ctl2_reg(crtc_state), dss_ctl2_val);
> }
>
> void intel_dsc_disable(const struct intel_crtc_state *old_crtc_state) {
> struct intel_crtc *crtc = to_intel_crtc(old_crtc_state->uapi.crtc);
> struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> - enum pipe pipe = crtc->pipe;
> - i915_reg_t dss_ctl1_reg, dss_ctl2_reg;
> - u32 dss_ctl1_val = 0, dss_ctl2_val = 0;
>
> if (!old_crtc_state->dsc.compression_enable)
> return;
>
> - if (!is_pipe_dsc(old_crtc_state)) {
> - dss_ctl1_reg = DSS_CTL1;
> - dss_ctl2_reg = DSS_CTL2;
> - } else {
> - dss_ctl1_reg = ICL_PIPE_DSS_CTL1(pipe);
> - dss_ctl2_reg = ICL_PIPE_DSS_CTL2(pipe);
> + intel_de_write(dev_priv, dss_ctl1_reg(old_crtc_state), 0);
> + intel_de_write(dev_priv, dss_ctl2_reg(old_crtc_state), 0); }
> +
> +void intel_dsc_get_config(struct intel_crtc_state *crtc_state) {
> + struct drm_dsc_config *vdsc_cfg = &crtc_state->dsc.config;
> + struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
> + struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
> + enum pipe pipe = crtc->pipe;
> + enum intel_display_power_domain power_domain;
> + intel_wakeref_t wakeref;
> + u32 dss_ctl1, dss_ctl2, val;
> +
> + if (!intel_dsc_source_support(crtc_state))
> + return;
> +
> + power_domain = intel_dsc_power_domain(crtc_state);
> +
> + wakeref = intel_display_power_get_if_enabled(dev_priv,
> power_domain);
> + if (!wakeref)
> + return;
> +
> + dss_ctl1 = intel_de_read(dev_priv, dss_ctl1_reg(crtc_state));
> + dss_ctl2 = intel_de_read(dev_priv, dss_ctl2_reg(crtc_state));
> +
> + crtc_state->dsc.compression_enable = dss_ctl2 &
> LEFT_BRANCH_VDSC_ENABLE;
> + if (!crtc_state->dsc.compression_enable)
> + goto out;
> +
> + crtc_state->dsc.dsc_split = (dss_ctl2 & RIGHT_BRANCH_VDSC_ENABLE)
> &&
> + (dss_ctl1 & JOINER_ENABLE);
> +
> + if (dss_ctl1 & BIG_JOINER_ENABLE) {
> + crtc_state->bigjoiner = true;
> +
> + if (!(dss_ctl1 & MASTER_BIG_JOINER_ENABLE)) {
> + crtc_state->bigjoiner_slave = true;
> + if (!WARN_ON(crtc->pipe == PIPE_A))
> + crtc_state->bigjoiner_linked_crtc =
> + intel_get_crtc_for_pipe(dev_priv, crtc-
> >pipe - 1);
> + } else {
> + if (!WARN_ON(INTEL_NUM_PIPES(dev_priv) == crtc-
> >pipe + 1))
> + crtc_state->bigjoiner_linked_crtc =
> + intel_get_crtc_for_pipe(dev_priv, crtc-
> >pipe + 1);
> + }
> }
> - dss_ctl1_val = intel_de_read(dev_priv, dss_ctl1_reg);
> - if (dss_ctl1_val & JOINER_ENABLE)
> - dss_ctl1_val &= ~JOINER_ENABLE;
> - intel_de_write(dev_priv, dss_ctl1_reg, dss_ctl1_val);
> -
> - dss_ctl2_val = intel_de_read(dev_priv, dss_ctl2_reg);
> - if (dss_ctl2_val & LEFT_BRANCH_VDSC_ENABLE ||
> - dss_ctl2_val & RIGHT_BRANCH_VDSC_ENABLE)
> - dss_ctl2_val &= ~(LEFT_BRANCH_VDSC_ENABLE |
> - RIGHT_BRANCH_VDSC_ENABLE);
> - intel_de_write(dev_priv, dss_ctl2_reg, dss_ctl2_val);
> -
> - /* Disable Power wells for VDSC/joining */
> - intel_display_power_put_unchecked(dev_priv,
> -
> intel_dsc_power_domain(old_crtc_state));
> +
> + /* FIXME: add more state readout as needed */
> +
> + /* PPS1 */
> + if (!is_pipe_dsc(crtc_state))
> + val = intel_de_read(dev_priv,
> DSCA_PICTURE_PARAMETER_SET_1);
> + else
> + val = intel_de_read(dev_priv,
> +
> ICL_DSC0_PICTURE_PARAMETER_SET_1(pipe));
> + vdsc_cfg->bits_per_pixel = val;
> + crtc_state->dsc.compressed_bpp = vdsc_cfg->bits_per_pixel >> 4;
> +out:
> + intel_display_power_put(dev_priv, power_domain, wakeref);
> }
> diff --git a/drivers/gpu/drm/i915/display/intel_vdsc.h
> b/drivers/gpu/drm/i915/display/intel_vdsc.h
> index e56a3254c214..65d301c23580 100644
> --- a/drivers/gpu/drm/i915/display/intel_vdsc.h
> +++ b/drivers/gpu/drm/i915/display/intel_vdsc.h
> @@ -11,15 +11,13 @@
> struct intel_encoder;
> struct intel_crtc_state;
>
> -bool intel_dsc_source_support(struct intel_encoder *encoder,
> - const struct intel_crtc_state *crtc_state);
> +bool intel_dsc_source_support(const struct intel_crtc_state
> +*crtc_state);
> void intel_dsc_enable(struct intel_encoder *encoder,
> const struct intel_crtc_state *crtc_state); void
> intel_dsc_disable(const struct intel_crtc_state *crtc_state); int
> intel_dsc_compute_params(struct intel_encoder *encoder,
> struct intel_crtc_state *pipe_config); -void
> intel_dsc_get_config(struct intel_encoder *encoder,
> - struct intel_crtc_state *crtc_state);
> +void intel_dsc_get_config(struct intel_crtc_state *crtc_state);
> enum intel_display_power_domain
> intel_dsc_power_domain(const struct intel_crtc_state *crtc_state);
>
> --
> 2.19.1
>
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