Op 28-08-2020 om 01:35 schreef Navare, Manasi:
> On Mon, Aug 10, 2020 at 04:28:28PM -0700, Manasi Navare wrote:
>> From: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
>>
>> Make vdsc work when no output is enabled. The big joiner needs VDSC
>> on the slave, so enable it and set the appropriate bits.
>> Also update timestamping constants, because slave crtc's are not
>> updated in drm_atomic_helper_update_legacy_modeset_state().
>>
>> This should be enough to bring up CRTC's in a big joiner configuration,
>> without any plane configuration on the second pipe yet.
>>
>> HOWEVER, we still bring up the crtc's in the wrong order. We need to
>> make sure that the master crtc is brought up after the slave crtc.
>> This is done correctly later in this series.
>>
>> The next steps are to enable planes correctly, and make sure we enable
>> and update both master and slave in the correct order.
>>
>> v2:
>> * Manual rebase (Manasi)
>>
>> v3:
>> * Rebase (Manasi)
>>
>> v4:
>> * Rebase (Manasi)
>>
>> v5:
>> * Get dsc power domain in ddi_init (Manasi)
>>
>> v6:
>> * Remove dsc power put from dsc_disable (Maarten)
>>
>> Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
>> Signed-off-by: Manasi Navare <manasi.d.nav...@intel.com>
>> ---
>> drivers/gpu/drm/i915/display/icl_dsi.c | 2 -
>> drivers/gpu/drm/i915/display/intel_ddi.c | 68 +++-
>> drivers/gpu/drm/i915/display/intel_display.c | 377 ++++++++++++------
>> .../drm/i915/display/intel_display_types.h | 1 +
>> 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 | 7 +-
>> 7 files changed, 413 insertions(+), 249 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/i915/display/icl_dsi.c
>> b/drivers/gpu/drm/i915/display/icl_dsi.c
>> index 8c55f5bee9ab..26f7372b4c25 100644
>> --- a/drivers/gpu/drm/i915/display/icl_dsi.c
>> +++ b/drivers/gpu/drm/i915/display/icl_dsi.c
>> @@ -1454,8 +1454,6 @@ 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);
> Maarten,
> Why do we need to remove this from dsi_get_config()?
This is read by the pipe now, which is the only place that does get_config().
>
>> -
>> /* FIXME: adapt icl_ddi_clock_get() for DSI and use that? */
>> pipe_config->port_clock = intel_dpll_get_freq(i915,
>> pipe_config->shared_dpll);
>> diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c
>> b/drivers/gpu/drm/i915/display/intel_ddi.c
>> index de5b216561d8..6de13c67f5b8 100644
>> --- a/drivers/gpu/drm/i915/display/intel_ddi.c
>> +++ b/drivers/gpu/drm/i915/display/intel_ddi.c
>> @@ -28,6 +28,7 @@
>> #include <drm/drm_scdc_helper.h>
>>
>> #include "i915_drv.h"
>> +#include "i915_trace.h"
>> #include "intel_audio.h"
>> #include "intel_combo_phy.h"
>> #include "intel_connector.h"
>> @@ -2093,12 +2094,6 @@ static void intel_ddi_get_power_domains(struct
>> intel_encoder *encoder,
>> 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,
>> @@ -3387,7 +3382,8 @@ static void tgl_ddi_pre_enable_dp(struct
>> intel_atomic_state *state,
>>
>> /* 7.l Configure and enable FEC if needed */
>> intel_ddi_enable_fec(encoder, crtc_state);
>> - intel_dsc_enable(encoder, crtc_state);
>> + if (!crtc_state->bigjoiner)
>> + intel_dsc_enable(encoder, crtc_state);
>> }
>>
>> static void hsw_ddi_pre_enable_dp(struct intel_atomic_state *state,
>> @@ -3458,7 +3454,8 @@ static void hsw_ddi_pre_enable_dp(struct
>> intel_atomic_state *state,
>> if (!is_mst)
>> intel_ddi_enable_pipe_clock(encoder, crtc_state);
>>
>> - intel_dsc_enable(encoder, crtc_state);
>> + if (!crtc_state->bigjoiner)
>> + intel_dsc_enable(encoder, crtc_state);
>> }
>>
>> static void intel_ddi_pre_enable_dp(struct intel_atomic_state *state,
>> @@ -3713,6 +3710,21 @@ static void intel_ddi_post_disable(struct
>> intel_atomic_state *state,
>> ilk_pfit_disable(old_crtc_state);
>> }
>>
>> + if (old_crtc_state->bigjoiner_linked_crtc) {
>> + struct intel_atomic_state *state =
>> + to_intel_atomic_state(old_crtc_state->uapi.state);
>> + struct intel_crtc *slave =
>> + old_crtc_state->bigjoiner_linked_crtc;
>> + const struct intel_crtc_state *old_slave_crtc_state =
>> + intel_atomic_get_old_crtc_state(state, slave);
>> +
>> + intel_crtc_vblank_off(old_slave_crtc_state);
>> + trace_intel_pipe_disable(slave);
>> +
>> + intel_dsc_disable(old_slave_crtc_state);
>> + skl_scaler_disable(old_slave_crtc_state);
>> + }
>> +
>> /*
>> * When called from DP MST code:
>> * - old_conn_state will be NULL
>> @@ -3927,7 +3939,8 @@ static void intel_enable_ddi(struct intel_atomic_state
>> *state,
>> {
>> drm_WARN_ON(state->base.dev, crtc_state->has_pch_encoder);
>>
>> - intel_ddi_enable_transcoder_func(encoder, crtc_state);
>> + if (!crtc_state->bigjoiner_slave)
>> + intel_ddi_enable_transcoder_func(encoder, crtc_state);
>>
>> intel_enable_pipe(crtc_state);
>>
>> @@ -4274,8 +4287,8 @@ static void bdw_get_trans_port_sync_config(struct
>> intel_crtc_state *crtc_state)
>> crtc_state->sync_mode_slaves_mask);
>> }
>>
>> -void intel_ddi_get_config(struct intel_encoder *encoder,
>> - struct intel_crtc_state *pipe_config)
>> +static void intel_ddi_read_func_ctl(struct intel_encoder *encoder,
>> + struct intel_crtc_state *pipe_config)
>> {
>> struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
>> struct intel_crtc *intel_crtc = to_intel_crtc(pipe_config->uapi.crtc);
>> @@ -4283,13 +4296,10 @@ void intel_ddi_get_config(struct intel_encoder
>> *encoder,
>> struct intel_dp *intel_dp = enc_to_intel_dp(encoder);
>> u32 temp, flags = 0;
>>
>> - /* XXX: DSI transcoder paranoia */
>> - if (drm_WARN_ON(&dev_priv->drm, transcoder_is_dsi(cpu_transcoder)))
>> + temp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
>> + if (!(temp & TRANS_DDI_FUNC_ENABLE))
>> return;
>>
>> - intel_dsc_get_config(encoder, pipe_config);
>> -
>> - temp = intel_de_read(dev_priv, TRANS_DDI_FUNC_CTL(cpu_transcoder));
>> if (temp & TRANS_DDI_PHSYNC)
>> flags |= DRM_MODE_FLAG_PHSYNC;
>> else
>> @@ -4397,6 +4407,29 @@ void intel_ddi_get_config(struct intel_encoder
>> *encoder,
>> intel_dp->regs.dp_tp_ctl = TGL_DP_TP_CTL(transcoder);
>> intel_dp->regs.dp_tp_status = TGL_DP_TP_STATUS(transcoder);
>> }
>> +}
>> +
>> +void intel_ddi_get_config(struct intel_encoder *encoder,
>> + struct intel_crtc_state *pipe_config)
>> +{
>> + struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
>> + enum transcoder cpu_transcoder = pipe_config->cpu_transcoder;
>> +
>> + /* XXX: DSI transcoder paranoia */
>> + if (WARN_ON(transcoder_is_dsi(cpu_transcoder)))
>> + return;
>> +
>> + intel_ddi_read_func_ctl(encoder, pipe_config);
>> + if (pipe_config->bigjoiner_slave) {
>> + /* read out pipe settings from master */
>> + enum transcoder save = pipe_config->cpu_transcoder;
>> +
>> + /* Our own transcoder needs to be disabled when reading it in
>> intel_ddi_read_func_ctl() */
>> + WARN_ON(pipe_config->output_types);
>> + pipe_config->cpu_transcoder = (enum
>> transcoder)pipe_config->bigjoiner_linked_crtc->pipe;
>> + intel_ddi_read_func_ctl(encoder, pipe_config);
>> + pipe_config->cpu_transcoder = save;
>> + }
>>
>> pipe_config->has_audio =
>> intel_ddi_is_audio_enabled(dev_priv, cpu_transcoder);
>> @@ -4422,7 +4455,8 @@ void intel_ddi_get_config(struct intel_encoder
>> *encoder,
>> dev_priv->vbt.edp.bpp = pipe_config->pipe_bpp;
>> }
>>
>> - intel_ddi_clock_get(encoder, pipe_config);
>> + if (!pipe_config->bigjoiner_slave)
>> + intel_ddi_clock_get(encoder, pipe_config);
>>
>> if (IS_GEN9_LP(dev_priv))
>> pipe_config->lane_lat_optim_mask =
>> diff --git a/drivers/gpu/drm/i915/display/intel_display.c
>> b/drivers/gpu/drm/i915/display/intel_display.c
>> index 41af7f1011fd..7223b6d916e7 100644
>> --- a/drivers/gpu/drm/i915/display/intel_display.c
>> +++ b/drivers/gpu/drm/i915/display/intel_display.c
>> @@ -7024,6 +7024,45 @@ static void hsw_set_frame_start_delay(const struct
>> intel_crtc_state *crtc_state)
>> intel_de_write(dev_priv, reg, val);
>> }
>>
>> +static void tgl_ddi_bigjoiner_pre_enable(struct intel_atomic_state *state,
>> + const struct intel_crtc_state
>> *crtc_state)
>> +{
>> + struct intel_crtc *master = to_intel_crtc(crtc_state->uapi.crtc);
>> + struct intel_crtc_state *master_crtc_state;
>> + struct drm_connector_state *conn_state;
>> + struct drm_connector *conn;
>> + struct intel_encoder *encoder = NULL;
>> + int i;
>> +
>> + if (crtc_state->bigjoiner_slave)
>> + master = crtc_state->bigjoiner_linked_crtc;
>> +
>> + master_crtc_state = intel_atomic_get_new_crtc_state(state, master);
>> +
>> + for_each_new_connector_in_state(&state->base, conn, conn_state, i) {
>> + if (conn_state->crtc != &master->base)
>> + continue;
>> +
>> + encoder = to_intel_encoder(conn_state->best_encoder);
>> + break;
>> + }
>> +
>> + if (!crtc_state->bigjoiner_slave) {
>> + /* need to enable VDSC, which we skipped in pre-enable */
>> + intel_dsc_enable(encoder, crtc_state);
>> + } else {
>> + /*
>> + * Enable sequence steps 1-7 on bigjoiner master
>> + */
>> + intel_encoders_pre_pll_enable(state, master);
>> + intel_enable_shared_dpll(master_crtc_state);
>> + intel_encoders_pre_enable(state, master);
>> +
>> + /* and DSC on slave */
> Also here fec_enable never gets called for the slave since we call
> intel_encoders_pre_enable
> only for the master. So essentially on slave we are just doing dsc enable
> without FEC which is wrong.
>
> Regard
It is? I thought FEC was only required for the master when I was carefully
reading the spec.
The DP encoder on the slave is completely unused, so no fec should be needed
there.
~Maarten
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