return intel_dp->psr_dpcd[0] & DP_PSR_IS_SUPPORTED;
}
-bool intel_psr_is_enabled(struct drm_device *dev)
+static bool vlv_is_psr_active_on_pipe(struct drm_device *dev, int pipe)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t val;
- if (!HAS_PSR(dev))
- return false;
-
- return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
+ val = I915_READ(VLV_PSRSTAT(pipe)) &
+ VLV_EDP_PSR_CURR_STATE_MASK;
+ return (val == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
+ (val == VLV_EDP_PSR_ACTIVE_SF_UPDATE);
}
static void intel_psr_write_vsc(struct intel_dp *intel_dp,
POSTING_READ(ctl_reg);
}
-static void intel_psr_setup_vsc(struct intel_dp *intel_dp)
+static void vlv_psr_setup_vsc(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = intel_dig_port->base.base.crtc;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ uint32_t val;
+
+ /* VLV auto-generate VSC package as per EDP 1.3 spec, Table 3.10 */
+ val = I915_READ(VLV_VSCSDP(pipe));
+ val &= ~VLV_EDP_PSR_SDP_FREQ_MASK;
+ val |= VLV_EDP_PSR_SDP_FREQ_EVFRAME;
+ I915_WRITE(VLV_VSCSDP(pipe), val);
+}
+
+static void hsw_psr_setup_vsc(struct intel_dp *intel_dp)
{
struct edp_vsc_psr psr_vsc;
intel_psr_write_vsc(intel_dp, &psr_vsc);
}
-static void intel_psr_enable_sink(struct intel_dp *intel_dp)
+static void vlv_psr_enable_sink(struct intel_dp *intel_dp)
+{
+ drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
+ DP_PSR_ENABLE);
+}
+
+static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
{
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t aux_clock_divider;
int precharge = 0x3;
- bool only_standby = false;
+ bool only_standby = dev_priv->vbt.psr.full_link;
static const uint8_t aux_msg[] = {
[0] = DP_AUX_NATIVE_WRITE << 4,
[1] = DP_SET_POWER >> 8,
(aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT));
}
-static void intel_psr_enable_source(struct intel_dp *intel_dp)
+static void vlv_psr_enable_source(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dig_port->base.base.crtc;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+
+ /* Transition from PSR_state 0 to PSR_state 1, i.e. PSR Inactive */
+ I915_WRITE(VLV_PSRCTL(pipe),
+ VLV_EDP_PSR_MODE_SW_TIMER |
+ VLV_EDP_PSR_SRC_TRANSMITTER_STATE |
+ VLV_EDP_PSR_ENABLE);
+}
+
+static void vlv_psr_activate(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct drm_crtc *crtc = dig_port->base.base.crtc;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+
+ /* Let's do the transition from PSR_state 1 to PSR_state 2
+ * that is PSR transition to active - static frame transmission.
+ * Then Hardware is responsible for the transition to PSR_state 3
+ * that is PSR active - no Remote Frame Buffer (RFB) update.
+ */
+ I915_WRITE(VLV_PSRCTL(pipe), I915_READ(VLV_PSRCTL(pipe)) |
+ VLV_EDP_PSR_ACTIVE_ENTRY);
+}
+
+static void hsw_psr_enable_source(struct intel_dp *intel_dp)
{
struct intel_digital_port *dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
uint32_t max_sleep_time = 0x1f;
- uint32_t idle_frames = 1;
+ /* Lately it was identified that depending on panel idle frame count
+ * calculated at HW can be off by 1. So let's use what came
+ * from VBT + 1 and at minimum 2 to be on the safe side.
+ */
+ uint32_t idle_frames = dev_priv->vbt.psr.idle_frames ?
+ dev_priv->vbt.psr.idle_frames + 1 : 2;
uint32_t val = 0x0;
const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
bool only_standby = false;
val |= EDP_PSR_TP2_TP3_TIME_0us;
val |= EDP_PSR_TP1_TIME_0us;
val |= EDP_PSR_SKIP_AUX_EXIT;
- val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0;
} else
val |= EDP_PSR_LINK_DISABLE;
return false;
}
- /* Below limitations aren't valid for Broadwell */
- if (IS_BROADWELL(dev))
- goto out;
-
- if (I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) &
- S3D_ENABLE) {
+ if (IS_HASWELL(dev) &&
+ I915_READ(HSW_STEREO_3D_CTL(intel_crtc->config.cpu_transcoder)) &
+ S3D_ENABLE) {
DRM_DEBUG_KMS("PSR condition failed: Stereo 3D is Enabled\n");
return false;
}
- if (intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
+ if (IS_HASWELL(dev) &&
+ intel_crtc->config.adjusted_mode.flags & DRM_MODE_FLAG_INTERLACE) {
DRM_DEBUG_KMS("PSR condition failed: Interlaced is Enabled\n");
return false;
}
- out:
dev_priv->psr.source_ok = true;
return true;
}
-static void intel_psr_do_enable(struct intel_dp *intel_dp)
+static void intel_psr_activate(struct intel_dp *intel_dp)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
lockdep_assert_held(&dev_priv->psr.lock);
/* Enable/Re-enable PSR on the host */
- intel_psr_enable_source(intel_dp);
+ if (HAS_DDI(dev))
+ /* On HSW+ after we enable PSR on source it will activate it
+ * as soon as it match configure idle_frame count. So
+ * we just actually enable it here on activation time.
+ */
+ hsw_psr_enable_source(intel_dp);
+ else
+ vlv_psr_activate(intel_dp);
dev_priv->psr.active = true;
}
dev_priv->psr.busy_frontbuffer_bits = 0;
- intel_psr_setup_vsc(intel_dp);
+ if (HAS_DDI(dev)) {
+ hsw_psr_setup_vsc(intel_dp);
- /* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
- EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
+ /* Avoid continuous PSR exit by masking memup and hpd */
+ I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
+ EDP_PSR_DEBUG_MASK_HPD | EDP_PSR_DEBUG_MASK_LPSP);
- /* Enable PSR on the panel */
- intel_psr_enable_sink(intel_dp);
+ /* Enable PSR on the panel */
+ hsw_psr_enable_sink(intel_dp);
+ } else {
+ vlv_psr_setup_vsc(intel_dp);
+
+ /* Enable PSR on the panel */
+ vlv_psr_enable_sink(intel_dp);
+
+ /* On HSW+ enable_source also means go to PSR entry/active
+ * state as soon as idle_frame achieved and here would be
+ * to soon. However on VLV enable_source just enable PSR
+ * but let it on inactive state. So we might do this prior
+ * to active transition, i.e. here.
+ */
+ vlv_psr_enable_source(intel_dp);
+ }
dev_priv->psr.enabled = intel_dp;
unlock:
mutex_unlock(&dev_priv->psr.lock);
}
-/**
- * intel_psr_disable - Disable PSR
- * @intel_dp: Intel DP
- *
- * This function needs to be called before disabling pipe.
- */
-void intel_psr_disable(struct intel_dp *intel_dp)
+static void vlv_psr_disable(struct intel_dp *intel_dp)
{
struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
struct drm_device *dev = intel_dig_port->base.base.dev;
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_crtc *intel_crtc =
+ to_intel_crtc(intel_dig_port->base.base.crtc);
+ uint32_t val;
- mutex_lock(&dev_priv->psr.lock);
- if (!dev_priv->psr.enabled) {
- mutex_unlock(&dev_priv->psr.lock);
- return;
+ if (dev_priv->psr.active) {
+ /* Put VLV PSR back to PSR_state 0 that is PSR Disabled. */
+ if (wait_for((I915_READ(VLV_PSRSTAT(intel_crtc->pipe)) &
+ VLV_EDP_PSR_IN_TRANS) == 0, 1))
+ WARN(1, "PSR transition took longer than expected\n");
+
+ val = I915_READ(VLV_PSRCTL(intel_crtc->pipe));
+ val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
+ val &= ~VLV_EDP_PSR_ENABLE;
+ val &= ~VLV_EDP_PSR_MODE_MASK;
+ I915_WRITE(VLV_PSRCTL(intel_crtc->pipe), val);
+
+ dev_priv->psr.active = false;
+ } else {
+ WARN_ON(vlv_is_psr_active_on_pipe(dev, intel_crtc->pipe));
}
+}
+
+static void hsw_psr_disable(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
if (dev_priv->psr.active) {
I915_WRITE(EDP_PSR_CTL(dev),
} else {
WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE);
}
+}
+
+/**
+ * intel_psr_disable - Disable PSR
+ * @intel_dp: Intel DP
+ *
+ * This function needs to be called before disabling pipe.
+ */
+void intel_psr_disable(struct intel_dp *intel_dp)
+{
+ struct intel_digital_port *intel_dig_port = dp_to_dig_port(intel_dp);
+ struct drm_device *dev = intel_dig_port->base.base.dev;
+ struct drm_i915_private *dev_priv = dev->dev_private;
+
+ mutex_lock(&dev_priv->psr.lock);
+ if (!dev_priv->psr.enabled) {
+ mutex_unlock(&dev_priv->psr.lock);
+ return;
+ }
+
+ if (HAS_DDI(dev))
+ hsw_psr_disable(intel_dp);
+ else
+ vlv_psr_disable(intel_dp);
dev_priv->psr.enabled = NULL;
mutex_unlock(&dev_priv->psr.lock);
struct drm_i915_private *dev_priv =
container_of(work, typeof(*dev_priv), psr.work.work);
struct intel_dp *intel_dp = dev_priv->psr.enabled;
+ struct drm_crtc *crtc = dp_to_dig_port(intel_dp)->base.base.crtc;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
/* We have to make sure PSR is ready for re-enable
* otherwise it keeps disabled until next full enable/disable cycle.
* PSR might take some time to get fully disabled
* and be ready for re-enable.
*/
- if (wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev_priv->dev)) &
- EDP_PSR_STATUS_STATE_MASK) == 0, 50)) {
- DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
- return;
+ if (HAS_DDI(dev_priv->dev)) {
+ if (wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev_priv->dev)) &
+ EDP_PSR_STATUS_STATE_MASK) == 0, 50)) {
+ DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
+ return;
+ }
+ } else {
+ if (wait_for((I915_READ(VLV_PSRSTAT(pipe)) &
+ VLV_EDP_PSR_IN_TRANS) == 0, 1)) {
+ DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
+ return;
+ }
}
-
mutex_lock(&dev_priv->psr.lock);
intel_dp = dev_priv->psr.enabled;
if (dev_priv->psr.busy_frontbuffer_bits)
goto unlock;
- intel_psr_do_enable(intel_dp);
+ intel_psr_activate(intel_dp);
unlock:
mutex_unlock(&dev_priv->psr.lock);
}
static void intel_psr_exit(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_dp *intel_dp = dev_priv->psr.enabled;
+ struct drm_crtc *crtc = dp_to_dig_port(intel_dp)->base.base.crtc;
+ enum pipe pipe = to_intel_crtc(crtc)->pipe;
+ u32 val;
- if (dev_priv->psr.active) {
- u32 val = I915_READ(EDP_PSR_CTL(dev));
+ if (!dev_priv->psr.active)
+ return;
+
+ if (HAS_DDI(dev)) {
+ val = I915_READ(EDP_PSR_CTL(dev));
WARN_ON(!(val & EDP_PSR_ENABLE));
I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE);
dev_priv->psr.active = false;
+ } else {
+ val = I915_READ(VLV_PSRCTL(pipe));
+
+ /* Here we do the transition from PSR_state 3 to PSR_state 5
+ * directly once PSR State 4 that is active with single frame
+ * update can be skipped. PSR_state 5 that is PSR exit then
+ * Hardware is responsible to transition back to PSR_state 1
+ * that is PSR inactive. Same state after
+ * vlv_edp_psr_enable_source.
+ */
+ val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
+ I915_WRITE(VLV_PSRCTL(pipe), val);
+
+ /* Send AUX wake up - Spec says after transitioning to PSR
+ * active we have to send AUX wake up by writing 01h in DPCD
+ * 600h of sink device.
+ * XXX: This might slow down the transition, but without this
+ * HW doesn't complete the transition to PSR_state 1 and we
+ * never get the screen updated.
+ */
+ drm_dp_dpcd_writeb(&intel_dp->aux, DP_SET_POWER,
+ DP_SET_POWER_D0);
}
+ dev_priv->psr.active = false;
}
/**
(frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe)))
intel_psr_exit(dev);
+ /*
+ * On Valleyview and Cherryview we don't use hardware tracking so
+ * any plane updates or cursor moves don't result in a PSR
+ * invalidating. Which means we need to manually fake this in
+ * software for all flushes, not just when we've seen a preceding
+ * invalidation through frontbuffer rendering. */
+ if (!HAS_DDI(dev))
+ intel_psr_exit(dev);
+
if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)
schedule_delayed_work(&dev_priv->psr.work,
msecs_to_jiffies(100));
projects / cascardo / linux.git / blobdiff