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path: root/drivers/gpu/drm/i915/intel_psr.c
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Diffstat (limited to 'drivers/gpu/drm/i915/intel_psr.c')
-rw-r--r--drivers/gpu/drm/i915/intel_psr.c77
1 files changed, 52 insertions, 25 deletions
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 213581c215b3..bc5ea2a6cf4c 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -80,7 +80,7 @@ static void intel_psr_write_vsc(struct intel_dp *intel_dp,
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *crtc = to_intel_crtc(dig_port->base.base.crtc);
enum transcoder cpu_transcoder = crtc->config->cpu_transcoder;
- u32 ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
+ i915_reg_t ctl_reg = HSW_TVIDEO_DIP_CTL(cpu_transcoder);
uint32_t *data = (uint32_t *) vsc_psr;
unsigned int i;
@@ -151,13 +151,31 @@ static void vlv_psr_enable_sink(struct intel_dp *intel_dp)
DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
}
+static i915_reg_t psr_aux_ctl_reg(struct drm_i915_private *dev_priv,
+ enum port port)
+{
+ if (INTEL_INFO(dev_priv)->gen >= 9)
+ return DP_AUX_CH_CTL(port);
+ else
+ return EDP_PSR_AUX_CTL;
+}
+
+static i915_reg_t psr_aux_data_reg(struct drm_i915_private *dev_priv,
+ enum port port, int index)
+{
+ if (INTEL_INFO(dev_priv)->gen >= 9)
+ return DP_AUX_CH_DATA(port, index);
+ else
+ return EDP_PSR_AUX_DATA(index);
+}
+
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;
- uint32_t aux_data_reg, aux_ctl_reg;
+ i915_reg_t aux_ctl_reg;
int precharge = 0x3;
static const uint8_t aux_msg[] = {
[0] = DP_AUX_NATIVE_WRITE << 4,
@@ -166,6 +184,7 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
[3] = 1 - 1,
[4] = DP_SET_POWER_D0,
};
+ enum port port = dig_port->port;
int i;
BUILD_BUG_ON(sizeof(aux_msg) > 20);
@@ -181,14 +200,11 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
DP_AUX_FRAME_SYNC_ENABLE);
- aux_data_reg = (INTEL_INFO(dev)->gen >= 9) ?
- DPA_AUX_CH_DATA1 : EDP_PSR_AUX_DATA1(dev);
- aux_ctl_reg = (INTEL_INFO(dev)->gen >= 9) ?
- DPA_AUX_CH_CTL : EDP_PSR_AUX_CTL(dev);
+ aux_ctl_reg = psr_aux_ctl_reg(dev_priv, port);
/* Setup AUX registers */
for (i = 0; i < sizeof(aux_msg); i += 4)
- I915_WRITE(aux_data_reg + i,
+ I915_WRITE(psr_aux_data_reg(dev_priv, port, i >> 2),
intel_dp_pack_aux(&aux_msg[i], sizeof(aux_msg) - i));
if (INTEL_INFO(dev)->gen >= 9) {
@@ -267,16 +283,11 @@ static void hsw_psr_enable_source(struct intel_dp *intel_dp)
const uint32_t link_entry_time = EDP_PSR_MIN_LINK_ENTRY_TIME_8_LINES;
if (intel_dp->psr_dpcd[1] & DP_PSR_NO_TRAIN_ON_EXIT) {
- /* It doesn't mean we shouldn't send TPS patters, so let's
- send the minimal TP1 possible and skip TP2. */
- val |= EDP_PSR_TP1_TIME_100us;
- val |= EDP_PSR_TP2_TP3_TIME_0us;
- val |= EDP_PSR_SKIP_AUX_EXIT;
/* Sink should be able to train with the 5 or 6 idle patterns */
idle_frames += 4;
}
- I915_WRITE(EDP_PSR_CTL(dev), val |
+ I915_WRITE(EDP_PSR_CTL, val |
(IS_BROADWELL(dev) ? 0 : link_entry_time) |
max_sleep_time << EDP_PSR_MAX_SLEEP_TIME_SHIFT |
idle_frames << EDP_PSR_IDLE_FRAME_SHIFT |
@@ -340,7 +351,7 @@ 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 = dev->dev_private;
- WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE);
+ WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
WARN_ON(dev_priv->psr.active);
lockdep_assert_held(&dev_priv->psr.lock);
@@ -404,7 +415,7 @@ void intel_psr_enable(struct intel_dp *intel_dp)
}
/* Avoid continuous PSR exit by masking memup and hpd */
- I915_WRITE(EDP_PSR_DEBUG_CTL(dev), EDP_PSR_DEBUG_MASK_MEMUP |
+ I915_WRITE(EDP_PSR_DEBUG_CTL, EDP_PSR_DEBUG_MASK_MEMUP |
EDP_PSR_DEBUG_MASK_HPD);
/* Enable PSR on the panel */
@@ -427,6 +438,19 @@ void intel_psr_enable(struct intel_dp *intel_dp)
vlv_psr_enable_source(intel_dp);
}
+ /*
+ * FIXME: Activation should happen immediately since this function
+ * is just called after pipe is fully trained and enabled.
+ * However on every platform we face issues when first activation
+ * follows a modeset so quickly.
+ * - On VLV/CHV we get bank screen on first activation
+ * - On HSW/BDW we get a recoverable frozen screen until next
+ * exit-activate sequence.
+ */
+ if (INTEL_INFO(dev)->gen < 9)
+ schedule_delayed_work(&dev_priv->psr.work,
+ msecs_to_jiffies(intel_dp->panel_power_cycle_delay * 5));
+
dev_priv->psr.enabled = intel_dp;
unlock:
mutex_unlock(&dev_priv->psr.lock);
@@ -466,17 +490,17 @@ static void hsw_psr_disable(struct intel_dp *intel_dp)
struct drm_i915_private *dev_priv = dev->dev_private;
if (dev_priv->psr.active) {
- I915_WRITE(EDP_PSR_CTL(dev),
- I915_READ(EDP_PSR_CTL(dev)) & ~EDP_PSR_ENABLE);
+ I915_WRITE(EDP_PSR_CTL,
+ I915_READ(EDP_PSR_CTL) & ~EDP_PSR_ENABLE);
/* Wait till PSR is idle */
- if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev)) &
+ if (_wait_for((I915_READ(EDP_PSR_STATUS_CTL) &
EDP_PSR_STATUS_STATE_MASK) == 0, 2000, 10))
DRM_ERROR("Timed out waiting for PSR Idle State\n");
dev_priv->psr.active = false;
} else {
- WARN_ON(I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE);
+ WARN_ON(I915_READ(EDP_PSR_CTL) & EDP_PSR_ENABLE);
}
}
@@ -523,7 +547,7 @@ static void intel_psr_work(struct work_struct *work)
* and be ready for re-enable.
*/
if (HAS_DDI(dev_priv->dev)) {
- if (wait_for((I915_READ(EDP_PSR_STATUS_CTL(dev_priv->dev)) &
+ if (wait_for((I915_READ(EDP_PSR_STATUS_CTL) &
EDP_PSR_STATUS_STATE_MASK) == 0, 50)) {
DRM_ERROR("Timed out waiting for PSR Idle for re-enable\n");
return;
@@ -566,11 +590,11 @@ static void intel_psr_exit(struct drm_device *dev)
return;
if (HAS_DDI(dev)) {
- val = I915_READ(EDP_PSR_CTL(dev));
+ val = I915_READ(EDP_PSR_CTL);
WARN_ON(!(val & EDP_PSR_ENABLE));
- I915_WRITE(EDP_PSR_CTL(dev), val & ~EDP_PSR_ENABLE);
+ I915_WRITE(EDP_PSR_CTL, val & ~EDP_PSR_ENABLE);
} else {
val = I915_READ(VLV_PSRCTL(pipe));
@@ -700,7 +724,6 @@ void intel_psr_flush(struct drm_device *dev,
struct drm_i915_private *dev_priv = dev->dev_private;
struct drm_crtc *crtc;
enum pipe pipe;
- int delay_ms = HAS_DDI(dev) ? 100 : 500;
mutex_lock(&dev_priv->psr.lock);
if (!dev_priv->psr.enabled) {
@@ -735,8 +758,9 @@ void intel_psr_flush(struct drm_device *dev,
}
if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)
- schedule_delayed_work(&dev_priv->psr.work,
- msecs_to_jiffies(delay_ms));
+ if (!work_busy(&dev_priv->psr.work.work))
+ schedule_delayed_work(&dev_priv->psr.work,
+ msecs_to_jiffies(100));
mutex_unlock(&dev_priv->psr.lock);
}
@@ -751,6 +775,9 @@ void intel_psr_init(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ dev_priv->psr_mmio_base = IS_HASWELL(dev_priv) ?
+ HSW_EDP_PSR_BASE : BDW_EDP_PSR_BASE;
+
INIT_DELAYED_WORK(&dev_priv->psr.work, intel_psr_work);
mutex_init(&dev_priv->psr.lock);
}
generated by cgit (git 2.34.1) at 2025-04-28 10:34:43 +0000