On Fri, Mar 16, 2018 at 04:05:00PM -0700, José Roberto de Souza wrote:
> Sink can support our PSR2 requirements but userspace can request
> a resolution that PSR2 hardware do not support, in this case it
> was overwritten the PSR2 sink support.
> Adding another flag here, this way if requested resolution changed
> to a value that PSR2 hardware can handle, PSR2 can be enabled.
>
> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@xxxxxxxxx>
> Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> Signed-off-by: José Roberto de Souza <jose.souza@xxxxxxxxx>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
> ---
> drivers/gpu/drm/i915/i915_debugfs.c | 4 ++--
> drivers/gpu/drm/i915/i915_drv.h | 3 ++-
> drivers/gpu/drm/i915/intel_psr.c | 36 ++++++++++++++++++------------------
> 3 files changed, 22 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
> index 5378863e3238..4366adcad56d 100644
> --- a/drivers/gpu/drm/i915/i915_debugfs.c
> +++ b/drivers/gpu/drm/i915/i915_debugfs.c
> @@ -2571,7 +2571,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
> yesno(work_busy(&dev_priv->psr.work.work)));
>
> if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> enabled = I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE;
> else
> enabled = I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE;
> @@ -2619,7 +2619,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
>
> seq_printf(m, "Performance_Counter: %u\n", psrperf);
> }
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> u32 psr2 = I915_READ(EDP_PSR2_STATUS);
>
> seq_printf(m, "EDP_PSR2_STATUS: %x [%s]\n",
> diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
> index d4bc8d18f56c..d4475196f78a 100644
> --- a/drivers/gpu/drm/i915/i915_drv.h
> +++ b/drivers/gpu/drm/i915/i915_drv.h
> @@ -601,11 +601,12 @@ struct i915_psr {
> bool active;
> struct delayed_work work;
> unsigned busy_frontbuffer_bits;
> - bool psr2_support;
> + bool sink_psr2_support;
> bool link_standby;
> bool colorimetry_support;
> bool alpm;
> bool has_hw_tracking;
> + bool psr2_enabled;
>
> void (*enable_source)(struct intel_dp *,
> const struct intel_crtc_state *);
> diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
> index c5eeb13cbcfd..aa4e03f65386 100644
> --- a/drivers/gpu/drm/i915/intel_psr.c
> +++ b/drivers/gpu/drm/i915/intel_psr.c
> @@ -161,15 +161,15 @@ void intel_psr_init_dpcd(struct intel_dp *intel_dp)
> */
> y_coord_req = intel_dp_get_y_coord_required(intel_dp);
>
> - dev_priv->psr.psr2_support = frame_sync_cap && y_coord_req;
> - if (dev_priv->psr.psr2_support)
> + dev_priv->psr.sink_psr2_support = frame_sync_cap && y_coord_req;
> + if (dev_priv->psr.sink_psr2_support)
> DRM_DEBUG_KMS("PSR2 supported on sink\n");
> else
> DRM_DEBUG_KMS("PSR2 not supported on sink"
> "(frame sync: %d Y-coord required: %d)\n",
> frame_sync_cap, y_coord_req);
>
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.sink_psr2_support) {
> dev_priv->psr.colorimetry_support =
> intel_dp_get_colorimetry_status(intel_dp);
> dev_priv->psr.alpm =
> @@ -210,7 +210,7 @@ static void hsw_psr_setup_vsc(struct intel_dp *intel_dp,
> struct drm_i915_private *dev_priv = to_i915(intel_dig_port->base.base.dev);
> struct edp_vsc_psr psr_vsc;
>
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> /* Prepare VSC Header for SU as per EDP 1.4 spec, Table 6.11 */
> memset(&psr_vsc, 0, sizeof(psr_vsc));
> psr_vsc.sdp_header.HB0 = 0;
> @@ -282,12 +282,12 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
> aux_clock_divider = intel_dp->get_aux_clock_divider(intel_dp, 0);
>
> /* Enable AUX frame sync at sink */
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> drm_dp_dpcd_writeb(&intel_dp->aux,
> DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
> DP_AUX_FRAME_SYNC_ENABLE);
> /* Enable ALPM at sink for psr2 */
> - if (dev_priv->psr.psr2_support && dev_priv->psr.alpm)
> + if (dev_priv->psr.psr2_enabled && dev_priv->psr.alpm)
> drm_dp_dpcd_writeb(&intel_dp->aux,
> DP_RECEIVER_ALPM_CONFIG,
> DP_ALPM_ENABLE);
> @@ -455,7 +455,7 @@ static void hsw_psr_activate(struct intel_dp *intel_dp)
> */
>
> /* psr1 and psr2 are mutually exclusive.*/
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> hsw_activate_psr2(intel_dp);
> else
> hsw_activate_psr1(intel_dp);
> @@ -475,7 +475,7 @@ static bool intel_psr2_config_valid(struct intel_dp *intel_dp,
> * dynamically during PSR enable, and extracted from sink
> * caps during eDP detection.
> */
> - if (!dev_priv->psr.psr2_support)
> + if (!dev_priv->psr.sink_psr2_support)
> return false;
>
> if (INTEL_GEN(dev_priv) >= 10 || IS_GEMINILAKE(dev_priv)) {
> @@ -574,7 +574,7 @@ static void intel_psr_activate(struct intel_dp *intel_dp)
> struct drm_device *dev = intel_dig_port->base.base.dev;
> struct drm_i915_private *dev_priv = to_i915(dev);
>
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
> else
> WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
> @@ -595,7 +595,7 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp,
>
> psr_aux_io_power_get(intel_dp);
>
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> u32 chicken = PSR2_VSC_ENABLE_PROG_HEADER
> | PSR2_ADD_VERTICAL_LINE_COUNT;
> I915_WRITE(CHICKEN_TRANS(cpu_transcoder), chicken);
> @@ -648,7 +648,7 @@ void intel_psr_enable(struct intel_dp *intel_dp,
> goto unlock;
> }
>
> - dev_priv->psr.psr2_support = crtc_state->has_psr2;
> + dev_priv->psr.psr2_enabled = crtc_state->has_psr2;
> dev_priv->psr.busy_frontbuffer_bits = 0;
>
> dev_priv->psr.setup_vsc(intel_dp, crtc_state);
> @@ -718,12 +718,12 @@ static void hsw_psr_disable(struct intel_dp *intel_dp,
> i915_reg_t psr_status;
> u32 psr_status_mask;
>
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> drm_dp_dpcd_writeb(&intel_dp->aux,
> DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
> 0);
>
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> psr_status = EDP_PSR2_STATUS;
> psr_status_mask = EDP_PSR2_STATUS_STATE_MASK;
>
> @@ -747,7 +747,7 @@ static void hsw_psr_disable(struct intel_dp *intel_dp,
>
> dev_priv->psr.active = false;
> } else {
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> WARN_ON(I915_READ(EDP_PSR2_CTL) & EDP_PSR2_ENABLE);
> else
> WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
> @@ -807,7 +807,7 @@ static void intel_psr_work(struct work_struct *work)
> * and be ready for re-enable.
> */
> if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> if (intel_wait_for_register(dev_priv,
> EDP_PSR2_STATUS,
> EDP_PSR2_STATUS_STATE_MASK,
> @@ -866,11 +866,11 @@ static void intel_psr_exit(struct drm_i915_private *dev_priv)
> return;
>
> if (HAS_DDI(dev_priv)) {
> - if (dev_priv->psr.psr2_support)
> + if (dev_priv->psr.psr2_enabled)
> drm_dp_dpcd_writeb(&intel_dp->aux,
> DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
> 0);
> - if (dev_priv->psr.psr2_support) {
> + if (dev_priv->psr.psr2_enabled) {
> val = I915_READ(EDP_PSR2_CTL);
> WARN_ON(!(val & EDP_PSR2_ENABLE));
> I915_WRITE(EDP_PSR2_CTL, val & ~EDP_PSR2_ENABLE);
> @@ -1039,7 +1039,7 @@ void intel_psr_flush(struct drm_i915_private *dev_priv,
>
> /* By definition flush = invalidate + flush */
> if (frontbuffer_bits) {
> - if (dev_priv->psr.psr2_support ||
> + if (dev_priv->psr.psr2_enabled ||
> IS_VALLEYVIEW(dev_priv) || IS_CHERRYVIEW(dev_priv)) {
> intel_psr_exit(dev_priv);
> } else {
> --
> 2.16.2
>
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