On gen12, we no longer need to disable DC5/DC6 when when PG2 is in use
(which translates to cases where we're using VDSC on pipe A).
Bspec: 49193
Cc: Lucas De Marchi <lucas.demarchi@xxxxxxxxx>
Cc: José Roberto de Souza <jose.souza@xxxxxxxxx>
Signed-off-by: Matt Roper <matthew.d.roper@xxxxxxxxx>
---
.../gpu/drm/i915/display/intel_display_power.c | 16 +++++++++++-----
.../gpu/drm/i915/display/intel_display_power.h | 1 +
2 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index 8ba68ec6dc24..1d21a850e933 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -926,10 +926,16 @@ void intel_display_power_set_target_dc_state(struct drm_i915_private *dev_priv,
static void assert_can_enable_dc5(struct drm_i915_private *dev_priv)
{
- bool pg2_enabled = intel_display_power_well_is_enabled(dev_priv,
- SKL_DISP_PW_2);
+ enum i915_power_well_id high_pg;
- WARN_ONCE(pg2_enabled, "PG2 not disabled to enable DC5.\n");
+ /* Power wells at this level and above must be disabled for DC5 entry */
+ if (INTEL_GEN(dev_priv) >= 12)
+ high_pg = TGL_DISP_PW_3;
+ else
+ high_pg = SKL_DISP_PW_2;
+
+ WARN_ONCE(intel_display_power_well_is_enabled(dev_priv, high_pg),
+ "Power wells above platform's DC5 limit still enabled.\n");
WARN_ONCE((intel_de_read(dev_priv, DC_STATE_EN) & DC_STATE_EN_UPTO_DC5),
"DC5 already programmed to be enabled.\n");
@@ -2712,7 +2718,7 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
BIT_ULL(POWER_DOMAIN_INIT))
#define TGL_DISPLAY_DC_OFF_POWER_DOMAINS ( \
- TGL_PW_2_POWER_DOMAINS | \
+ TGL_PW_3_POWER_DOMAINS | \
BIT_ULL(POWER_DOMAIN_MODESET) | \
BIT_ULL(POWER_DOMAIN_AUX_A) | \
BIT_ULL(POWER_DOMAIN_AUX_B) | \
@@ -3908,7 +3914,7 @@ static const struct i915_power_well_desc tgl_power_wells[] = {
.name = "power well 3",
.domains = TGL_PW_3_POWER_DOMAINS,
.ops = &hsw_power_well_ops,
- .id = DISP_PW_ID_NONE,
+ .id = TGL_DISP_PW_3,
{
.hsw.regs = &hsw_power_well_regs,
.hsw.idx = ICL_PW_CTL_IDX_PW_3,
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
index 601e000ffd0d..da64a5edae7a 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.h
+++ b/drivers/gpu/drm/i915/display/intel_display_power.h
@@ -100,6 +100,7 @@ enum i915_power_well_id {
SKL_DISP_PW_MISC_IO,
SKL_DISP_PW_1,
SKL_DISP_PW_2,
+ TGL_DISP_PW_3,
SKL_DISP_DC_OFF,
};
--
2.24.1
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