[Intel-gfx] [PATCH] drm/i915: Add Baytrail PSR Support.
Rodrigo Vivi
rodrigo.vivi at gmail.com
Tue Dec 17 21:31:03 CET 2013
This patch adds PSR Support to Baytrail.
Baytrail cannot easily detect screen updates and force PSR exit.
So we inactivate it on busy_ioctl and update to get it back
on next display mark_idle.
v2: Also inactivate PSR on cursor update.
Signed-off-by: Rodrigo Vivi <rodrigo.vivi at gmail.com>
---
drivers/gpu/drm/i915/i915_debugfs.c | 18 +++-
drivers/gpu/drm/i915/i915_drv.h | 4 +-
drivers/gpu/drm/i915/i915_gem.c | 3 +
drivers/gpu/drm/i915/i915_reg.h | 34 ++++++++
drivers/gpu/drm/i915/intel_ddi.c | 3 +-
drivers/gpu/drm/i915/intel_display.c | 6 ++
drivers/gpu/drm/i915/intel_dp.c | 156 +++++++++++++++++++++++++++++------
drivers/gpu/drm/i915/intel_drv.h | 1 +
8 files changed, 194 insertions(+), 31 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index 6294ffd..b29543d 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1816,6 +1816,7 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
struct drm_device *dev = node->minor->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
u32 psrperf = 0;
+ u32 psrstatus;
bool enabled = false;
intel_runtime_pm_get(dev_priv);
@@ -1823,14 +1824,23 @@ static int i915_edp_psr_status(struct seq_file *m, void *data)
seq_printf(m, "Sink_Support: %s\n", yesno(dev_priv->psr.sink_support));
seq_printf(m, "Source_OK: %s\n", yesno(dev_priv->psr.source_ok));
- enabled = HAS_PSR(dev) &&
- I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
+ if (HAS_PSR(dev)) {
+ if (IS_VALLEYVIEW(dev)) {
+ psrstatus = I915_READ(VLV_EDP_PSR_STATUS_CTL) &
+ VLV_EDP_PSR_CURR_STATE_MASK;
+ enabled = ((psrstatus == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
+ (psrstatus == VLV_EDP_PSR_ACTIVE_SF_UPDATE));
+ } else
+ enabled = I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
+ }
seq_printf(m, "Enabled: %s\n", yesno(enabled));
- if (HAS_PSR(dev))
+ /* VLV PSR has no kind of performance counter */
+ if (HAS_PSR(dev) && !IS_VALLEYVIEW(dev)) {
psrperf = I915_READ(EDP_PSR_PERF_CNT(dev)) &
EDP_PSR_PERF_CNT_MASK;
- seq_printf(m, "Performance_Counter: %u\n", psrperf);
+ seq_printf(m, "Performance_Counter: %u\n", psrperf);
+ }
intel_runtime_pm_put(dev_priv);
return 0;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index cae3225..916d243 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -716,6 +716,7 @@ struct i915_psr {
bool sink_support;
bool source_ok;
bool setup_done;
+ bool inactive;
};
enum intel_pch {
@@ -1851,7 +1852,8 @@ struct drm_i915_file_private {
#define HAS_DDI(dev) (INTEL_INFO(dev)->has_ddi)
#define HAS_FPGA_DBG_UNCLAIMED(dev) (INTEL_INFO(dev)->has_fpga_dbg)
-#define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev))
+#define HAS_PSR(dev) (IS_HASWELL(dev) || IS_BROADWELL(dev) || \
+ IS_VALLEYVIEW(dev))
#define HAS_PC8(dev) (IS_HASWELL(dev)) /* XXX HSW:ULX */
#define HAS_RUNTIME_PM(dev) (IS_HASWELL(dev))
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 32636a4..d0a5c27 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -4048,6 +4048,9 @@ i915_gem_busy_ioctl(struct drm_device *dev, void *data,
if (ret)
return ret;
+ if (IS_VALLEYVIEW(dev))
+ intel_edp_psr_inactivate(dev);
+
obj = to_intel_bo(drm_gem_object_lookup(dev, file, args->handle));
if (&obj->base == NULL) {
ret = -ENOENT;
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e9548b1..c996e261 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1969,6 +1969,40 @@
#define BCLRPAT(pipe) _PIPE(pipe, _BCLRPAT_A, _BCLRPAT_B)
#define VSYNCSHIFT(trans) _TRANSCODER(trans, _VSYNCSHIFT_A, _VSYNCSHIFT_B)
+/* VLV eDP PSR registers */
+#define VLV_EDP_PSR_CTL (VLV_DISPLAY_BASE + 0x60090)
+#define VLV_EDP_PSR_ENABLE (1<<0)
+#define VLV_EDP_PSR_RESET (1<<1)
+#define VLV_EDP_PSR_MODE_MASK (7<<2)
+#define VLV_EDP_PSR_MODE_HW_TIMER (1<<3)
+#define VLV_EDP_PSR_MODE_SW_TIMER (1<<2)
+#define VLV_EDP_PSR_SINGLE_FRAME_UPDATE (1<<7)
+#define VLV_EDP_PSR_ACTIVE_ENTRY (1<<8)
+#define VLV_EDP_PSR_SRC_TRANSMITTER_STATE (1<<9)
+#define VLV_EDP_PSR_DBL_FRAME (1<<10)
+#define VLV_EDP_PSR_FRAME_COUNT_MASK (0xff<<16)
+#define VLV_EDP_PSR_IDLE_FRAME_SHIFT 16
+#define VLV_EDP_PSR_INT_TRANSITION (1<<24)
+
+#define VLV_PIPEA_VSC_SDP_REG (VLV_DISPLAY_BASE + 0x600a0)
+#define VLV_EDP_PSR_SDP_FREQ_MASK (3<<30)
+#define VLV_EDP_PSR_SDP_FREQ_ONCE (1<<31)
+#define VLV_EDP_PSR_SDP_FREQ_EVFRAME (1<<30)
+
+#define VLV_EDP_PSR_STATUS_CTL (VLV_DISPLAY_BASE + 0x60094)
+#define VLV_EDP_PSR_LAST_STATE_MASK (7<<3)
+#define VLV_EDP_PSR_CURR_STATE_MASK 7
+#define VLV_EDP_PSR_DISABLED (0<<0)
+#define VLV_EDP_PSR_INACTIVE (1<<0)
+#define VLV_EDP_PSR_IN_TRANS_TO_ACTIVE (2<<0)
+#define VLV_EDP_PSR_ACTIVE_NORFB_UP (3<<0)
+#define VLV_EDP_PSR_ACTIVE_SF_UPDATE (4<<0)
+#define VLV_EDP_PSR_EXIT (5<<0)
+#define VLV_EDP_PSR_IN_TRANS (1<<7)
+
+#define VLV_PSR_CLK_GATE_DISABLE (VLV_DISPLAY_BASE + 0x6204)
+#define VLV_CLK_DISABLE_PIPE_B (1<<30)
+
/* HSW+ eDP PSR registers */
#define EDP_PSR_BASE(dev) (IS_HASWELL(dev) ? 0x64800 : 0x6f800)
#define EDP_PSR_CTL(dev) (EDP_PSR_BASE(dev) + 0)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 1488b28..ae5a876 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1275,7 +1275,8 @@ static void intel_enable_ddi(struct intel_encoder *intel_encoder)
intel_dp_stop_link_train(intel_dp);
ironlake_edp_backlight_on(intel_dp);
- intel_edp_psr_enable(intel_dp);
+ if (!IS_VALLEYVIEW(dev))
+ intel_edp_psr_enable(intel_dp);
}
if (intel_crtc->eld_vld && type != INTEL_OUTPUT_EDP) {
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 674fd43..557a324 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7460,6 +7460,9 @@ static void intel_crtc_update_cursor(struct drm_crtc *crtc,
u32 base = 0, pos = 0;
bool visible;
+ if (IS_VALLEYVIEW(dev))
+ intel_edp_psr_inactivate(dev);
+
if (on)
base = intel_crtc->cursor_addr;
@@ -8175,6 +8178,9 @@ void intel_mark_idle(struct drm_device *dev)
if (dev_priv->info->gen >= 6)
gen6_rps_idle(dev->dev_private);
+
+ if (IS_VALLEYVIEW(dev))
+ intel_edp_psr_update(dev);
}
void intel_mark_fb_busy(struct drm_i915_gem_object *obj,
diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index f062a59..fd1ade1 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -1525,11 +1525,19 @@ static bool is_edp_psr(struct drm_device *dev)
static bool intel_edp_is_psr_enabled(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t val;
- if (!HAS_PSR(dev))
- return false;
+ if (HAS_PSR(dev)) {
+ if (IS_VALLEYVIEW(dev)) {
+ val = I915_READ(VLV_EDP_PSR_STATUS_CTL) &
+ VLV_EDP_PSR_CURR_STATE_MASK;
+ return ((val == VLV_EDP_PSR_ACTIVE_NORFB_UP) ||
+ (val == VLV_EDP_PSR_ACTIVE_SF_UPDATE));
+ } else
+ return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
+ }
- return I915_READ(EDP_PSR_CTL(dev)) & EDP_PSR_ENABLE;
+ return false;
}
static void intel_edp_psr_write_vsc(struct intel_dp *intel_dp,
@@ -1566,25 +1574,44 @@ static void intel_edp_psr_setup(struct intel_dp *intel_dp)
struct drm_device *dev = intel_dp_to_dev(intel_dp);
struct drm_i915_private *dev_priv = dev->dev_private;
struct edp_vsc_psr psr_vsc;
+ uint32_t val;
if (dev_priv->psr.setup_done)
return;
- /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
- memset(&psr_vsc, 0, sizeof(psr_vsc));
- psr_vsc.sdp_header.HB0 = 0;
- psr_vsc.sdp_header.HB1 = 0x7;
- psr_vsc.sdp_header.HB2 = 0x2;
- psr_vsc.sdp_header.HB3 = 0x8;
- intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
+ if (IS_VALLEYVIEW(dev)) {
+ val = I915_READ(VLV_PIPEA_VSC_SDP_REG);
+ val &= ~VLV_EDP_PSR_SDP_FREQ_MASK;
+ val |= VLV_EDP_PSR_SDP_FREQ_EVFRAME;
+ I915_WRITE(VLV_PIPEA_VSC_SDP_REG, val);
+
+ val = I915_READ(VLV_PSR_CLK_GATE_DISABLE);
+ val |= VLV_CLK_DISABLE_PIPE_B;
+ I915_WRITE(VLV_PSR_CLK_GATE_DISABLE, val);
+ } else {
+ /* Prepare VSC packet as per EDP 1.3 spec, Table 3.10 */
+ memset(&psr_vsc, 0, sizeof(psr_vsc));
+ psr_vsc.sdp_header.HB0 = 0;
+ psr_vsc.sdp_header.HB1 = 0x7;
+ psr_vsc.sdp_header.HB2 = 0x2;
+ psr_vsc.sdp_header.HB3 = 0x8;
+ intel_edp_psr_write_vsc(intel_dp, &psr_vsc);
- /* 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);
+ }
dev_priv->psr.setup_done = true;
}
+static void vlv_edp_psr_enable_sink(struct intel_dp *intel_dp)
+{
+ /* Enable PSR in sink */
+ intel_dp_aux_native_write_1(intel_dp, DP_PSR_EN_CFG,
+ DP_PSR_ENABLE);
+}
+
static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1613,6 +1640,24 @@ static void intel_edp_psr_enable_sink(struct intel_dp *intel_dp)
(aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT));
}
+static void vlv_edp_psr_enable_source(struct intel_dp *intel_dp)
+{
+ struct drm_device *dev = intel_dp_to_dev(intel_dp);
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t idle_frames = 1;
+ uint32_t val;
+
+ val = I915_READ(VLV_EDP_PSR_CTL);
+ val |= VLV_EDP_PSR_ENABLE;
+ val &= ~VLV_EDP_PSR_MODE_MASK;
+
+ val |= VLV_EDP_PSR_MODE_HW_TIMER;
+ val &= ~VLV_EDP_PSR_FRAME_COUNT_MASK;
+ val |= idle_frames << EDP_PSR_IDLE_FRAME_SHIFT;
+
+ I915_WRITE(VLV_EDP_PSR_CTL, val);
+}
+
static void intel_edp_psr_enable_source(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
@@ -1654,8 +1699,8 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
return false;
}
- if ((intel_encoder->type != INTEL_OUTPUT_EDP) ||
- (dig_port->port != PORT_A)) {
+ if (HAS_DDI(dev) && ((intel_encoder->type != INTEL_OUTPUT_EDP) ||
+ (dig_port->port != PORT_A))) {
DRM_DEBUG_KMS("HSW ties PSR to DDI A (eDP)\n");
return false;
}
@@ -1707,28 +1752,54 @@ static bool intel_edp_psr_match_conditions(struct intel_dp *intel_dp)
static void intel_edp_psr_do_enable(struct intel_dp *intel_dp)
{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
+ struct drm_i915_private *dev_priv = dev->dev_private;
- if (!intel_edp_psr_match_conditions(intel_dp) ||
- intel_edp_is_psr_enabled(dev))
+ if (intel_edp_is_psr_enabled(dev))
return;
/* Setup PSR once */
intel_edp_psr_setup(intel_dp);
/* Enable PSR on the panel */
- intel_edp_psr_enable_sink(intel_dp);
+ if (IS_VALLEYVIEW(dev))
+ vlv_edp_psr_enable_sink(intel_dp);
+ else
+ intel_edp_psr_enable_sink(intel_dp);
/* Enable PSR on the host */
- intel_edp_psr_enable_source(intel_dp);
+ if (IS_VALLEYVIEW(dev))
+ vlv_edp_psr_enable_source(intel_dp);
+ else
+ intel_edp_psr_enable_source(intel_dp);
+
+ dev_priv->psr.inactive = false;
}
void intel_edp_psr_enable(struct intel_dp *intel_dp)
{
+ if (intel_edp_psr_match_conditions(intel_dp))
+ intel_edp_psr_do_enable(intel_dp);
+}
+
+void vlv_edp_psr_disable(struct intel_dp *intel_dp)
+{
struct drm_device *dev = intel_dp_to_dev(intel_dp);
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ uint32_t val = I915_READ(VLV_EDP_PSR_STATUS_CTL);
- if (intel_edp_psr_match_conditions(intel_dp) &&
- !intel_edp_is_psr_enabled(dev))
- intel_edp_psr_do_enable(intel_dp);
+ if (!dev_priv->psr.setup_done)
+ return;
+
+ intel_edp_psr_inactivate(dev);
+
+ if (val & VLV_EDP_PSR_IN_TRANS)
+ udelay(250);
+
+ val = I915_READ(VLV_EDP_PSR_CTL);
+ val &= ~VLV_EDP_PSR_ACTIVE_ENTRY;
+ val &= ~VLV_EDP_PSR_ENABLE;
+ val &= ~VLV_EDP_PSR_MODE_MASK;
+ I915_WRITE(VLV_EDP_PSR_CTL, val);
}
void intel_edp_psr_disable(struct intel_dp *intel_dp)
@@ -1760,20 +1831,52 @@ void intel_edp_psr_update(struct drm_device *dev)
if (!is_edp_psr(dev))
return;
- if (!intel_edp_psr_match_conditions(intel_dp))
- intel_edp_psr_disable(intel_dp);
- else
+ if (!intel_edp_psr_match_conditions(intel_dp)) {
+ if (IS_VALLEYVIEW(dev))
+ vlv_edp_psr_disable(intel_dp);
+ else
+ intel_edp_psr_disable(intel_dp);
+ } else
if (!intel_edp_is_psr_enabled(dev))
intel_edp_psr_do_enable(intel_dp);
}
}
+void intel_edp_psr_inactivate(struct drm_device *dev)
+{
+ struct drm_i915_private *dev_priv = dev->dev_private;
+ struct intel_encoder *encoder;
+ struct intel_dp *intel_dp = NULL;
+
+ if (dev_priv->psr.inactive)
+ return;
+
+ list_for_each_entry(encoder, &dev->mode_config.encoder_list, base.head)
+ if (encoder->type == INTEL_OUTPUT_EDP) {
+ intel_dp = enc_to_intel_dp(&encoder->base);
+
+ if (!is_edp_psr(dev))
+ return;
+
+ dev_priv->psr.inactive = true;
+
+ I915_WRITE(VLV_EDP_PSR_CTL, VLV_EDP_PSR_RESET);
+ I915_WRITE(VLV_EDP_PSR_CTL, 0);
+ POSTING_READ(VLV_EDP_PSR_CTL);
+
+ intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON);
+ }
+}
+
static void intel_disable_dp(struct intel_encoder *encoder)
{
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
enum port port = dp_to_dig_port(intel_dp)->port;
struct drm_device *dev = encoder->base.dev;
+ if (IS_VALLEYVIEW(dev))
+ vlv_edp_psr_disable(intel_dp);
+
/* Make sure the panel is off before trying to change the mode. But also
* ensure that we have vdd while we switch off the panel. */
ironlake_edp_backlight_off(intel_dp);
@@ -1830,6 +1933,7 @@ static void vlv_enable_dp(struct intel_encoder *encoder)
struct intel_dp *intel_dp = enc_to_intel_dp(&encoder->base);
ironlake_edp_backlight_on(intel_dp);
+ intel_edp_psr_enable(intel_dp);
}
static void g4x_pre_enable_dp(struct intel_encoder *encoder)
@@ -3703,6 +3807,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
error, port_name(port));
dev_priv->psr.setup_done = false;
+ dev_priv->psr.inactive = true;
if (!intel_edp_init_connector(intel_dp, intel_connector)) {
i2c_del_adapter(&intel_dp->adapter);
@@ -3734,6 +3839,7 @@ intel_dp_init_connector(struct intel_digital_port *intel_dig_port,
void
intel_dp_init(struct drm_device *dev, int output_reg, enum port port)
{
+ struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_digital_port *intel_dig_port;
struct intel_encoder *intel_encoder;
struct drm_encoder *encoder;
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index f7b5b2f..6c6e1cd 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -730,6 +730,7 @@ void ironlake_edp_panel_vdd_off(struct intel_dp *intel_dp, bool sync);
void intel_edp_psr_enable(struct intel_dp *intel_dp);
void intel_edp_psr_disable(struct intel_dp *intel_dp);
void intel_edp_psr_update(struct drm_device *dev);
+void intel_edp_psr_inactivate(struct drm_device *dev);
/* intel_dsi.c */
--
1.8.3.1
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