The IO buffer Wake and Fast Wake bit size and value have been changed from
Gen12+. It programs the default value of IO buffer Wake and Fast Wake on
Gen12+. It adds definitions of IO buffer Wake and Fast Wake for pre Gen12
and Gen12+. And it aligns PSR2 definition macros.
v2: Fix macro definitions. (José)
v3: Addressed review comments from José
- Add missing default values of IO_BUFFER_WAKE and FAST_WAKE for GEN9+
- Change a style of macro naming in order to use lines as input.
- Update Todo comments.
v4: Add parentheses to macros to avoid precedence issues.
Cc: José Roberto de Souza <jose.so...@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong....@intel.com>
---
drivers/gpu/drm/i915/display/intel_psr.c | 16 ++++++++
drivers/gpu/drm/i915/i915_reg.h | 52 +++++++++++++++---------
2 files changed, 49 insertions(+), 19 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_psr.c
b/drivers/gpu/drm/i915/display/intel_psr.c
index 7a0011e42e00..ab380e6dc674 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -537,6 +537,22 @@ static void hsw_activate_psr2(struct intel_dp *intel_dp)
val |= EDP_PSR2_FRAME_BEFORE_SU(dev_priv->psr.sink_sync_latency + 1);
val |= intel_psr2_get_tp_time(intel_dp);
+ if (INTEL_GEN(dev_priv) >= 12) {
+ /*
+ * TODO: 7 lines of IO_BUFFER_WAKE and FAST_WAKE are default
+ * values from BSpec. In order to setting an optimal power
+ * consumption, lower than 4k resoluition mode needs to decrese
+ * IO_BUFFER_WAKE and FAST_WAKE. And higher than 4K resolution
+ * mode needs to increase IO_BUFFER_WAKE and FAST_WAKE.
+ */
+ val |= TGL_EDP_PSR2_BLOCK_COUNT_NUM_2;
+ val |= TGL_EDP_PSR2_IO_BUFFER_WAKE(7);
+ val |= TGL_EDP_PSR2_FAST_WAKE(7);
+ } else if (INTEL_GEN(dev_priv) >= 9) {
+ val |= EDP_PSR2_IO_BUFFER_WAKE(7);
+ val |= EDP_PSR2_FAST_WAKE(7);
+ }
+
/*
* PSR2 HW is incorrectly using EDP_PSR_TP1_TP3_SEL and BSpec is
* recommending keep this bit unset while PSR2 is enabled.
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 814a70945468..4066f67175dc 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4511,25 +4511,39 @@ enum {
#define EDP_PSR_DEBUG_MASK_DISP_REG_WRITE (1 << 16) /* Reserved in ICL+ */
#define EDP_PSR_DEBUG_EXIT_ON_PIXEL_UNDERRUN (1 << 15) /* SKL+ */
-#define _PSR2_CTL_A 0x60900
-#define _PSR2_CTL_EDP 0x6f900
-#define EDP_PSR2_CTL(tran) _MMIO_TRANS2(tran, _PSR2_CTL_A)
-#define EDP_PSR2_ENABLE (1 << 31)
-#define EDP_SU_TRACK_ENABLE (1 << 30)
-#define EDP_Y_COORDINATE_VALID (1 << 26) /* GLK and CNL+ */
-#define EDP_Y_COORDINATE_ENABLE (1 << 25) /* GLK and CNL+ */
-#define EDP_MAX_SU_DISABLE_TIME(t) ((t) << 20)
-#define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f << 20)
-#define EDP_PSR2_TP2_TIME_500us (0 << 8)
-#define EDP_PSR2_TP2_TIME_100us (1 << 8)
-#define EDP_PSR2_TP2_TIME_2500us (2 << 8)
-#define EDP_PSR2_TP2_TIME_50us (3 << 8)
-#define EDP_PSR2_TP2_TIME_MASK (3 << 8)
-#define EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4
-#define EDP_PSR2_FRAME_BEFORE_SU_MASK (0xf << 4)
-#define EDP_PSR2_FRAME_BEFORE_SU(a) ((a) << 4)
-#define EDP_PSR2_IDLE_FRAME_MASK 0xf
-#define EDP_PSR2_IDLE_FRAME_SHIFT 0
+#define _PSR2_CTL_A 0x60900
+#define _PSR2_CTL_EDP 0x6f900
+#define EDP_PSR2_CTL(tran) _MMIO_TRANS2(tran, _PSR2_CTL_A)
+#define EDP_PSR2_ENABLE (1 << 31)
+#define EDP_SU_TRACK_ENABLE (1 << 30)
+#define TGL_EDP_PSR2_BLOCK_COUNT_NUM_2 (0 << 28)
+#define TGL_EDP_PSR2_BLOCK_COUNT_NUM_3 (1 << 28)
+#define EDP_Y_COORDINATE_VALID (1 << 26) /* GLK and CNL+ */
+#define EDP_Y_COORDINATE_ENABLE (1 << 25) /* GLK and CNL+ */
+#define EDP_MAX_SU_DISABLE_TIME(t) ((t) << 20)
+#define EDP_MAX_SU_DISABLE_TIME_MASK (0x1f << 20)
+#define EDP_PSR2_IO_BUFFER_WAKE_MAX_LINES 8
+#define EDP_PSR2_IO_BUFFER_WAKE(lines)
((EDP_PSR2_IO_BUFFER_WAKE_MAX_LINES - (lines)) << 13)
+#define EDP_PSR2_IO_BUFFER_WAKE_MASK (3 << 13)
+#define TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES 5
+#define TGL_EDP_PSR2_IO_BUFFER_WAKE(lines) (((lines) -
TGL_EDP_PSR2_IO_BUFFER_WAKE_MIN_LINES) << 13)
+#define TGL_EDP_PSR2_IO_BUFFER_WAKE_MASK (7 << 13)
+#define EDP_PSR2_FAST_WAKE_MAX_LINES 8
+#define EDP_PSR2_FAST_WAKE(lines) ((EDP_PSR2_FAST_WAKE_MAX_LINES
- (lines)) << 11)
+#define EDP_PSR2_FAST_WAKE_MASK (3 << 11)
+#define TGL_EDP_PSR2_FAST_WAKE_MIN_LINES 5
+#define TGL_EDP_PSR2_FAST_WAKE(lines) (((lines) -
TGL_EDP_PSR2_FAST_WAKE_MIN_LINES) << 10)
+#define TGL_EDP_PSR2_FAST_WAKE_MASK (7 << 10)
+#define EDP_PSR2_TP2_TIME_500us (0 << 8)
+#define EDP_PSR2_TP2_TIME_100us (1 << 8)
+#define EDP_PSR2_TP2_TIME_2500us (2 << 8)
+#define EDP_PSR2_TP2_TIME_50us (3 << 8)
+#define EDP_PSR2_TP2_TIME_MASK (3 << 8)
+#define EDP_PSR2_FRAME_BEFORE_SU_SHIFT 4
+#define EDP_PSR2_FRAME_BEFORE_SU_MASK (0xf << 4)
+#define EDP_PSR2_FRAME_BEFORE_SU(a) ((a) << 4)
+#define EDP_PSR2_IDLE_FRAME_MASK 0xf
+#define EDP_PSR2_IDLE_FRAME_SHIFT 0
#define _PSR_EVENT_TRANS_A 0x60848
#define _PSR_EVENT_TRANS_B 0x61848
--
2.25.0
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