[Intel-gfx] [PATCH 6/6] drm/i915/display/adl_p: Implement PSR changes

José Roberto de Souza
2021-06-16T20:28:26Z

Implements changes around PSR for alderlake-P:

- EDP_SU_TRACK_ENABLE was removed and bit 30 now has other function
- Some bits of PSR2_MAN_TRK_CTL moved and SF_PARTIAL_FRAME_UPDATE was
removed setting SU_REGION_START/END_ADDR will do this job
- SU_REGION_START/END_ADDR have now line granularity but will need to
be aligned with DSC when the PSRS + DSC support lands

BSpec: 50422
BSpec: 50424
Cc: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
---
drivers/gpu/drm/i915/display/intel_psr.c | 43 ++++++++++++++++++------
drivers/gpu/drm/i915/i915_reg.h | 26 ++++++++------
2 files changed, 48 insertions(+), 21 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index 9643624fe160d..46bb19c4b63a4 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -534,11 +534,13 @@ static u32 intel_psr2_get_tp_time(struct intel_dp *intel_dp)
static void hsw_activate_psr2(struct intel_dp *intel_dp)
{
struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
- u32 val;
+ u32 val = EDP_PSR2_ENABLE;
+
+ val |= psr_compute_idle_frames(intel_dp) << EDP_PSR2_IDLE_FRAME_SHIFT;

- val = psr_compute_idle_frames(intel_dp) << EDP_PSR2_IDLE_FRAME_SHIFT;
+ if (!IS_ALDERLAKE_P(dev_priv))
+ val |= EDP_SU_TRACK_ENABLE;

- val |= EDP_PSR2_ENABLE | EDP_SU_TRACK_ENABLE;
if (DISPLAY_VER(dev_priv) >= 10 && DISPLAY_VER(dev_priv) <= 12)
val |= EDP_Y_COORDINATE_ENABLE;

@@ -793,6 +795,7 @@ static bool intel_psr2_sel_fetch_config_valid(struct intel_dp *intel_dp,
static bool psr2_granularity_check(struct intel_dp *intel_dp,
struct intel_crtc_state *crtc_state)
{
+ struct drm_i915_private *dev_priv = dp_to_i915(intel_dp);
const int crtc_hdisplay = crtc_state->hw.adjusted_mode.crtc_hdisplay;
const int crtc_vdisplay = crtc_state->hw.adjusted_mode.crtc_vdisplay;
u16 y_granularity = 0;
@@ -809,10 +812,13 @@ static bool psr2_granularity_check(struct intel_dp *intel_dp,
return intel_dp->psr.su_y_granularity == 4;

/*
- * For SW tracking we can adjust the y to match sink requirement if
- * multiple of 4
+ * adl_p has 1 line granularity for other platforms with SW tracking we
+ * can adjust the y coordinate to match sink requirement if multiple of
+ * 4
*/
- if (intel_dp->psr.su_y_granularity <= 2)
+ if (IS_ALDERLAKE_P(dev_priv))
+ y_granularity = intel_dp->psr.su_y_granularity;
+ else if (intel_dp->psr.su_y_granularity <= 2)
y_granularity = 4;
else if ((intel_dp->psr.su_y_granularity % 4) == 0)
y_granularity = intel_dp->psr.su_y_granularity;
@@ -1525,21 +1531,32 @@ void intel_psr2_program_trans_man_trk_ctl(const struct intel_crtc_state *crtc_st
static void psr2_man_trk_ctl_calc(struct intel_crtc_state *crtc_state,
struct drm_rect *clip, bool full_update)
{
+ struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
+ struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
u32 val = PSR2_MAN_TRK_CTL_ENABLE;

if (full_update) {
- val |= PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+ if (IS_ALDERLAKE_P(dev_priv))
+ val |= ADLP_PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+ else
+ val |= PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME;
+
goto exit;
}

if (clip->y1 == -1)
goto exit;

- drm_WARN_ON(crtc_state->uapi.crtc->dev, clip->y1 % 4 || clip->y2 % 4);
+ if (IS_ALDERLAKE_P(dev_priv)) {
+ val |= ADLP_PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1);
+ val |= ADLP_PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(clip->y2);
+ } else {
+ drm_WARN_ON(crtc_state->uapi.crtc->dev, clip->y1 % 4 || clip->y2 % 4);

- val |= PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE;
- val |= PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1 / 4 + 1);
- val |= PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(clip->y2 / 4 + 1);
+ val |= PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE;
+ val |= PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(clip->y1 / 4 + 1);
+ val |= PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(clip->y2 / 4 + 1);
+ }
exit:
crtc_state->psr2_man_track_ctl = val;
}
@@ -1563,11 +1580,15 @@ static void clip_area_update(struct drm_rect *overlap_damage_area,
static void intel_psr2_sel_fetch_pipe_alignment(const struct intel_crtc_state *crtc_state,
struct drm_rect *pipe_clip)
{
+ struct drm_i915_private *dev_priv = to_i915(crtc_state->uapi.crtc->dev);
const u16 y_alignment = crtc_state->su_y_granularity;

pipe_clip->y1 -= pipe_clip->y1 % y_alignment;
if (pipe_clip->y2 % y_alignment)
pipe_clip->y2 = ((pipe_clip->y2 / y_alignment) + 1) * y_alignment;
+
+ if (IS_ALDERLAKE_P(dev_priv) && crtc_state->dsc.compression_enable)
+ drm_warn(&dev_priv->drm, "Missing PSR2 sel fetch alignment with DSC\n");
}

int intel_psr2_sel_fetch_update(struct intel_atomic_state *state,
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index e0bd60fe7a190..74dc5ebce60e7 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4586,7 +4586,7 @@ enum {
#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_SU_TRACK_ENABLE (1 << 30) /* up to adl-p */
#define TGL_EDP_PSR2_BLOCK_COUNT_NUM_2 (0 << 28)
#define TGL_EDP_PSR2_BLOCK_COUNT_NUM_3 (1 << 28)
#define EDP_Y_COORDINATE_ENABLE REG_BIT(25) /* display 10, 11 and 12 */
@@ -4655,17 +4655,23 @@ enum {
#define PSR2_SU_STATUS_MASK(frame) (0x3ff << PSR2_SU_STATUS_SHIFT(frame))
#define PSR2_SU_STATUS_FRAMES 8

-#define _PSR2_MAN_TRK_CTL_A 0x60910
-#define _PSR2_MAN_TRK_CTL_EDP 0x6f910
-#define PSR2_MAN_TRK_CTL(tran) _MMIO_TRANS2(tran, _PSR2_MAN_TRK_CTL_A)
-#define PSR2_MAN_TRK_CTL_ENABLE REG_BIT(31)
-#define PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK REG_GENMASK(30, 21)
-#define PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(val) REG_FIELD_PREP(PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK, val)
+#define _PSR2_MAN_TRK_CTL_A 0x60910
+#define _PSR2_MAN_TRK_CTL_EDP 0x6f910
+#define PSR2_MAN_TRK_CTL(tran) _MMIO_TRANS2(tran, _PSR2_MAN_TRK_CTL_A)
+#define PSR2_MAN_TRK_CTL_ENABLE REG_BIT(31)
+#define PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK REG_GENMASK(30, 21)
+#define PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(val) REG_FIELD_PREP(PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK, val)
#define PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR_MASK REG_GENMASK(20, 11)
#define PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(val) REG_FIELD_PREP(PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR_MASK, val)
-#define PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME REG_BIT(3)
-#define PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME REG_BIT(2)
-#define PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE REG_BIT(1)
+#define PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME REG_BIT(3)
+#define PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME REG_BIT(2)
+#define PSR2_MAN_TRK_CTL_SF_PARTIAL_FRAME_UPDATE REG_BIT(1)
+#define ADLP_PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK REG_GENMASK(28, 16)
+#define ADLP_PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR(val) REG_FIELD_PREP(ADLP_PSR2_MAN_TRK_CTL_SU_REGION_START_ADDR_MASK, val)
+#define ADLP_PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR_MASK REG_GENMASK(12, 0)
+#define ADLP_PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR(val) REG_FIELD_PREP(ADLP_PSR2_MAN_TRK_CTL_SU_REGION_END_ADDR_MASK, val)
+#define ADLP_PSR2_MAN_TRK_CTL_SF_SINGLE_FULL_FRAME REG_BIT(14)
+#define ADLP_PSR2_MAN_TRK_CTL_SF_CONTINUOS_FULL_FRAME REG_BIT(13)

/* Icelake DSC Rate Control Range Parameter Registers */
#define DSCA_RC_RANGE_PARAMETERS_0 _MMIO(0x6B240)
--
2.32.0