On Wednesday 28 January 2015 09:32 PM, Daniel Vetter wrote:
On Thu, Jan 22, 2015 at 02:30:54PM +0530, Sonika Jindal wrote:
Mainly taking care of some register offsets, otherwise things are similar to
hsw. Also, programming ddi aux to use hardcoded values for psr data select.
v2: introduce EDP_PSR_AUX_BASE macro (Chris)
v3: Moving to HW tracking for SKL+ platforms, so activating source psr during
psr_enabling and then avoiding psr entries and exits for each frontbuffer
updates.
v4: Using SKL DDI AUX regs instead of changing PSR_AUX regs definition (Rodrigo)
Signed-off-by: Sonika Jindal <sonika.jin...@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.v...@intel.com>
---
drivers/gpu/drm/i915/i915_drv.h | 3 ++-
drivers/gpu/drm/i915/i915_reg.h | 5 +++++
drivers/gpu/drm/i915/intel_frontbuffer.c | 7 +++++--
drivers/gpu/drm/i915/intel_psr.c | 26 ++++++++++++++++++++++++--
4 files changed, 36 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 66f0c60..3d24872 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2371,7 +2371,8 @@ struct drm_i915_cmd_table {
#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) || \
- IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev))
+ IS_VALLEYVIEW(dev) || IS_CHERRYVIEW(dev) || \
+ IS_SKYLAKE(dev))
#define HAS_RUNTIME_PM(dev) (IS_GEN6(dev) || IS_HASWELL(dev) || \
IS_BROADWELL(dev) || IS_VALLEYVIEW(dev))
#define HAS_RC6(dev) (INTEL_INFO(dev)->gen >= 6)
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index a39bb03..a6f06fa 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -3748,6 +3748,11 @@ enum punit_power_well {
#define DP_AUX_CH_CTL_PRECHARGE_TEST (1 << 11)
#define DP_AUX_CH_CTL_BIT_CLOCK_2X_MASK (0x7ff)
#define DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT 0
+#define DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL (1 << 14)
+#define DP_AUX_CH_CTL_FS_DATA_AUX_REG_SKL (1 << 13)
+#define DP_AUX_CH_CTL_GTC_DATA_AUX_REG_SKL (1 << 12)
+#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL_MASK (1f << 5)
+#define DP_AUX_CH_CTL_FW_SYNC_PULSE_SKL(c) (((c) - 1) << 5)
#define DP_AUX_CH_CTL_SYNC_PULSE_SKL(c) ((c) - 1)
/*
diff --git a/drivers/gpu/drm/i915/intel_frontbuffer.c
b/drivers/gpu/drm/i915/intel_frontbuffer.c
index 79f6d72..010d550 100644
--- a/drivers/gpu/drm/i915/intel_frontbuffer.c
+++ b/drivers/gpu/drm/i915/intel_frontbuffer.c
@@ -156,7 +156,9 @@ void intel_fb_obj_invalidate(struct drm_i915_gem_object
*obj,
intel_mark_fb_busy(dev, obj->frontbuffer_bits, ring);
- intel_psr_invalidate(dev, obj->frontbuffer_bits);
+
+ if (INTEL_INFO(dev)->gen < 9)
+ intel_psr_invalidate(dev, obj->frontbuffer_bits);
}
/**
@@ -182,7 +184,8 @@ void intel_frontbuffer_flush(struct drm_device *dev,
intel_mark_fb_busy(dev, frontbuffer_bits, NULL);
- intel_psr_flush(dev, frontbuffer_bits);
+ if (INTEL_INFO(dev)->gen < 9)
+ intel_psr_flush(dev, frontbuffer_bits);
Again no, not going to take wholesale filtering of the sw invalidate
paths. This needs to be properly tested and pushed down into the psr
specific invalidate/flush functions on a per-function basis.
I've dropped these two hunks and merged the patch.
-Daniel
Hi Daniel,
Even SW tracking doesn't work in many cases, like I reported earlier in
ubuntu login screen where we don't get frontbuffer flushes and we don't
enter PSR at all with SW tracking.
I see similar behavior even in fbcon mode. So, I am not sure how you can
say that SW tracking is the only right way.
If there are cases where HW tracking fails (and I know a few), we need
to fix them. I can move this gen check to the intel_psr_* function if
that is the major concern.
-Sonika
/*
* FIXME: Unconditional fbc flushing here is a rather gross hack and
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index dd0e6e0..4867d5a 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -142,6 +142,7 @@ static void hsw_psr_enable_sink(struct intel_dp *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;
int precharge = 0x3;
bool only_standby = dev_priv->vbt.psr.full_link;
static const uint8_t aux_msg[] = {
@@ -168,16 +169,34 @@ static void hsw_psr_enable_sink(struct intel_dp *intel_dp)
drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG,
DP_PSR_ENABLE | DP_PSR_MAIN_LINK_ACTIVE);
+ 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);
+
/* Setup AUX registers */
for (i = 0; i < sizeof(aux_msg); i += 4)
- I915_WRITE(EDP_PSR_AUX_DATA1(dev) + i,
+ I915_WRITE(aux_data_reg + i,
intel_dp_pack_aux(&aux_msg[i], sizeof(aux_msg) - i));
- I915_WRITE(EDP_PSR_AUX_CTL(dev),
+ if (INTEL_INFO(dev)->gen >= 9) {
+ uint32_t val;
+
+ val = I915_READ(aux_ctl_reg);
+ val &= ~DP_AUX_CH_CTL_TIME_OUT_MASK;
+ val |= DP_AUX_CH_CTL_TIME_OUT_1600us;
+ val &= ~DP_AUX_CH_CTL_MESSAGE_SIZE_MASK;
+ val |= (sizeof(aux_msg) << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT);
+ /* Use hardcoded data values for PSR */
+ val &= ~DP_AUX_CH_CTL_PSR_DATA_AUX_REG_SKL;
+ I915_WRITE(aux_ctl_reg, val);
+ } else {
+ I915_WRITE(aux_ctl_reg,
DP_AUX_CH_CTL_TIME_OUT_400us |
(sizeof(aux_msg) << DP_AUX_CH_CTL_MESSAGE_SIZE_SHIFT) |
(precharge << DP_AUX_CH_CTL_PRECHARGE_2US_SHIFT) |
(aux_clock_divider << DP_AUX_CH_CTL_BIT_CLOCK_2X_SHIFT));
+ }
}
static void vlv_psr_enable_source(struct intel_dp *intel_dp)
@@ -355,6 +374,9 @@ void intel_psr_enable(struct intel_dp *intel_dp)
/* Enable PSR on the panel */
hsw_psr_enable_sink(intel_dp);
+
+ if (INTEL_INFO(dev)->gen >= 9)
+ intel_psr_activate(intel_dp);
} else {
vlv_psr_setup_vsc(intel_dp);
--
1.7.10.4
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