[Intel-gfx] [PATCH 3/7] drm/i915/tgl+: Enable display DC power states on all eDP ports

Imre Deak
2022-11-02T17:16:00Z

Starting with TGL eDP is supported on ports B+ (besides port A), so make
sure DC states are not blocked on any such ports. For this add an
AUX_IO_<port> power domain for each port with eDP support. These domains
similarly to AUX_IO_A enable only the AUX_IO_<port> power well for an
enabled port, whereas the existing AUX_<port> domains enable both the
AUX_IO_<port> and the DC_OFF power wells as required by DP AUX transfers.

Signed-off-by: Imre Deak <imre.deak@intel.com>
---
drivers/gpu/drm/i915/display/intel_ddi.c | 8 ++-
.../drm/i915/display/intel_display_power.c | 30 +++++++++++
.../drm/i915/display/intel_display_power.h | 7 +++
.../i915/display/intel_display_power_map.c | 53 +++++++++++++++++--
4 files changed, 91 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index e95bde5cf060e..00b577a5b9a76 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -848,6 +848,8 @@ bool intel_ddi_get_hw_state(struct intel_encoder *encoder,
static enum intel_display_power_domain
intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
{
+ struct drm_i915_private *i915 = to_i915(dig_port->base.base.dev);
+
/* ICL+ HW requires corresponding AUX IOs to be powered up for PSR with
* DC states enabled at the same time, while for driver initiated AUX
* transfers we need the same AUX IOs to be powered but with DC states
@@ -860,8 +862,10 @@ intel_ddi_main_link_aux_domain(struct intel_digital_port *dig_port)
* Note that PSR is enabled only on Port A even though this function
* returns the correct domain for other ports too.
*/
- return dig_port->aux_ch == AUX_CH_A ? POWER_DOMAIN_AUX_IO_A :
- intel_aux_power_domain(dig_port);
+ if (intel_dp_is_edp(&dig_port->dp))
+ return intel_display_power_aux_io_domain(i915, dig_port->aux_ch);
+ else
+ return intel_aux_power_domain(dig_port);
}

static void intel_ddi_get_power_domains(struct intel_encoder *encoder,
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.c b/drivers/gpu/drm/i915/display/intel_display_power.c
index da0047359446e..ca453518e7fd7 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power.c
@@ -131,6 +131,16 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
return "AUDIO_PLAYBACK";
case POWER_DOMAIN_AUX_IO_A:
return "AUX_IO_A";
+ case POWER_DOMAIN_AUX_IO_B:
+ return "AUX_IO_B";
+ case POWER_DOMAIN_AUX_IO_C:
+ return "AUX_IO_C";
+ case POWER_DOMAIN_AUX_IO_D:
+ return "AUX_IO_D";
+ case POWER_DOMAIN_AUX_IO_E:
+ return "AUX_IO_E";
+ case POWER_DOMAIN_AUX_IO_F:
+ return "AUX_IO_F";
case POWER_DOMAIN_AUX_A:
return "AUX_A";
case POWER_DOMAIN_AUX_B:
@@ -2332,6 +2342,7 @@ struct intel_ddi_port_domains {

enum intel_display_power_domain ddi_lanes;
enum intel_display_power_domain ddi_io;
+ enum intel_display_power_domain aux_io;
enum intel_display_power_domain aux_legacy_usbc;
enum intel_display_power_domain aux_tbt;
};
@@ -2346,6 +2357,7 @@ i9xx_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+ .aux_io = POWER_DOMAIN_AUX_IO_A,
.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
.aux_tbt = POWER_DOMAIN_INVALID,
},
@@ -2361,6 +2373,7 @@ d11_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+ .aux_io = POWER_DOMAIN_AUX_IO_A,
.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
.aux_tbt = POWER_DOMAIN_INVALID,
}, {
@@ -2371,6 +2384,7 @@ d11_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_C,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_C,
+ .aux_io = POWER_DOMAIN_AUX_IO_C,
.aux_legacy_usbc = POWER_DOMAIN_AUX_C,
.aux_tbt = POWER_DOMAIN_AUX_TBT1,
},
@@ -2386,6 +2400,7 @@ d12_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+ .aux_io = POWER_DOMAIN_AUX_IO_A,
.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
.aux_tbt = POWER_DOMAIN_INVALID,
}, {
@@ -2396,6 +2411,7 @@ d12_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
+ .aux_io = POWER_DOMAIN_INVALID,
.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
.aux_tbt = POWER_DOMAIN_AUX_TBT1,
},
@@ -2411,6 +2427,7 @@ d13_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_A,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_A,
+ .aux_io = POWER_DOMAIN_AUX_IO_A,
.aux_legacy_usbc = POWER_DOMAIN_AUX_A,
.aux_tbt = POWER_DOMAIN_INVALID,
}, {
@@ -2421,6 +2438,7 @@ d13_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_TC1,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_TC1,
+ .aux_io = POWER_DOMAIN_INVALID,
.aux_legacy_usbc = POWER_DOMAIN_AUX_USBC1,
.aux_tbt = POWER_DOMAIN_AUX_TBT1,
}, {
@@ -2431,6 +2449,7 @@ d13_port_domains[] = {

.ddi_lanes = POWER_DOMAIN_PORT_DDI_LANES_D,
.ddi_io = POWER_DOMAIN_PORT_DDI_IO_D,
+ .aux_io = POWER_DOMAIN_AUX_IO_D,
.aux_legacy_usbc = POWER_DOMAIN_AUX_D,
.aux_tbt = POWER_DOMAIN_INVALID,
},
@@ -2508,6 +2527,17 @@ intel_port_domains_for_aux_ch(struct drm_i915_private *i915, enum aux_ch aux_ch)
return NULL;
}

+enum intel_display_power_domain
+intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
+{
+ const struct intel_ddi_port_domains *domains = intel_port_domains_for_aux_ch(i915, aux_ch);
+
+ if (drm_WARN_ON(&i915->drm, !domains) || domains->aux_io == POWER_DOMAIN_INVALID)
+ return POWER_DOMAIN_AUX_IO_A;
+
+ return domains->aux_io + (int)(aux_ch - domains->aux_ch_start);
+}
+
enum intel_display_power_domain
intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch)
{
diff --git a/drivers/gpu/drm/i915/display/intel_display_power.h b/drivers/gpu/drm/i915/display/intel_display_power.h
index fd68d43bfe322..54737e0aec21e 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power.h
+++ b/drivers/gpu/drm/i915/display/intel_display_power.h
@@ -78,6 +78,11 @@ enum intel_display_power_domain {
POWER_DOMAIN_AUDIO_PLAYBACK,

POWER_DOMAIN_AUX_IO_A,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
+ POWER_DOMAIN_AUX_IO_D,
+ POWER_DOMAIN_AUX_IO_E,
+ POWER_DOMAIN_AUX_IO_F,

POWER_DOMAIN_AUX_A,
POWER_DOMAIN_AUX_B,
@@ -250,6 +255,8 @@ intel_display_power_ddi_lanes_domain(struct drm_i915_private *i915, enum port po
enum intel_display_power_domain
intel_display_power_ddi_io_domain(struct drm_i915_private *i915, enum port port);
enum intel_display_power_domain
+intel_display_power_aux_io_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
+enum intel_display_power_domain
intel_display_power_legacy_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
enum intel_display_power_domain
intel_display_power_tbt_aux_domain(struct drm_i915_private *i915, enum aux_ch aux_ch);
diff --git a/drivers/gpu/drm/i915/display/intel_display_power_map.c b/drivers/gpu/drm/i915/display/intel_display_power_map.c
index 43454022e6a66..b82c0d0a80c5f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_power_map.c
+++ b/drivers/gpu/drm/i915/display/intel_display_power_map.c
@@ -170,6 +170,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_display,
POWER_DOMAIN_VGA,
POWER_DOMAIN_AUDIO_MMIO,
POWER_DOMAIN_AUDIO_PLAYBACK,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_GMBUS,
@@ -179,6 +181,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_cmn_bc,
POWER_DOMAIN_PORT_DDI_LANES_B,
POWER_DOMAIN_PORT_DDI_LANES_C,
POWER_DOMAIN_PORT_CRT,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);
@@ -186,6 +190,8 @@ I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_cmn_bc,
I915_DECL_PW_DOMAINS(vlv_pwdoms_dpio_tx_bc_lanes,
POWER_DOMAIN_PORT_DDI_LANES_B,
POWER_DOMAIN_PORT_DDI_LANES_C,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);
@@ -243,6 +249,9 @@ I915_DECL_PW_DOMAINS(chv_pwdoms_display,
POWER_DOMAIN_VGA,
POWER_DOMAIN_AUDIO_MMIO,
POWER_DOMAIN_AUDIO_PLAYBACK,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
+ POWER_DOMAIN_AUX_IO_D,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_AUX_D,
@@ -252,12 +261,15 @@ I915_DECL_PW_DOMAINS(chv_pwdoms_display,
I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_bc,
POWER_DOMAIN_PORT_DDI_LANES_B,
POWER_DOMAIN_PORT_DDI_LANES_C,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);

I915_DECL_PW_DOMAINS(chv_pwdoms_dpio_cmn_d,
POWER_DOMAIN_PORT_DDI_LANES_D,
+ POWER_DOMAIN_AUX_IO_D,
POWER_DOMAIN_AUX_D,
POWER_DOMAIN_INIT);

@@ -305,6 +317,9 @@ static const struct i915_power_well_desc_list chv_power_wells[] = {
POWER_DOMAIN_VGA, \
POWER_DOMAIN_AUDIO_MMIO, \
POWER_DOMAIN_AUDIO_PLAYBACK, \
+ POWER_DOMAIN_AUX_IO_B, \
+ POWER_DOMAIN_AUX_IO_C, \
+ POWER_DOMAIN_AUX_IO_D, \
POWER_DOMAIN_AUX_B, \
POWER_DOMAIN_AUX_C, \
POWER_DOMAIN_AUX_D
@@ -407,6 +422,8 @@ static const struct i915_power_well_desc_list skl_power_wells[] = {
POWER_DOMAIN_VGA, \
POWER_DOMAIN_AUDIO_MMIO, \
POWER_DOMAIN_AUDIO_PLAYBACK, \
+ POWER_DOMAIN_AUX_IO_B, \
+ POWER_DOMAIN_AUX_IO_C, \
POWER_DOMAIN_AUX_B, \
POWER_DOMAIN_AUX_C

@@ -430,6 +447,8 @@ I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_a,
I915_DECL_PW_DOMAINS(bxt_pwdoms_dpio_cmn_bc,
POWER_DOMAIN_PORT_DDI_LANES_B,
POWER_DOMAIN_PORT_DDI_LANES_C,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);
@@ -483,6 +502,8 @@ static const struct i915_power_well_desc_list bxt_power_wells[] = {
POWER_DOMAIN_VGA, \
POWER_DOMAIN_AUDIO_MMIO, \
POWER_DOMAIN_AUDIO_PLAYBACK, \
+ POWER_DOMAIN_AUX_IO_B, \
+ POWER_DOMAIN_AUX_IO_C, \
POWER_DOMAIN_AUX_B, \
POWER_DOMAIN_AUX_C

@@ -509,11 +530,13 @@ I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_a,

I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_b,
POWER_DOMAIN_PORT_DDI_LANES_B,
+ POWER_DOMAIN_AUX_IO_B,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_INIT);

I915_DECL_PW_DOMAINS(glk_pwdoms_dpio_cmn_c,
POWER_DOMAIN_PORT_DDI_LANES_C,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);

@@ -523,10 +546,12 @@ I915_DECL_PW_DOMAINS(glk_pwdoms_aux_a,
POWER_DOMAIN_INIT);

I915_DECL_PW_DOMAINS(glk_pwdoms_aux_b,
+ POWER_DOMAIN_AUX_IO_B,
POWER_DOMAIN_AUX_B,
POWER_DOMAIN_INIT);

I915_DECL_PW_DOMAINS(glk_pwdoms_aux_c,
+ POWER_DOMAIN_AUX_IO_C,
POWER_DOMAIN_AUX_C,
POWER_DOMAIN_INIT);

@@ -617,6 +642,11 @@ I915_DECL_PW_DOMAINS(icl_pwdoms_pw_4,
POWER_DOMAIN_VGA, \
POWER_DOMAIN_AUDIO_MMIO, \
POWER_DOMAIN_AUDIO_PLAYBACK, \
+ POWER_DOMAIN_AUX_IO_B, \
+ POWER_DOMAIN_AUX_IO_C, \
+ POWER_DOMAIN_AUX_IO_D, \
+ POWER_DOMAIN_AUX_IO_E, \
+ POWER_DOMAIN_AUX_IO_F, \
POWER_DOMAIN_AUX_B, \
POWER_DOMAIN_AUX_C, \
POWER_DOMAIN_AUX_D, \
@@ -660,11 +690,21 @@ I915_DECL_PW_DOMAINS(icl_pwdoms_ddi_io_f, POWER_DOMAIN_PORT_DDI_IO_F);
I915_DECL_PW_DOMAINS(icl_pwdoms_aux_a,
POWER_DOMAIN_AUX_IO_A,
POWER_DOMAIN_AUX_A);
-I915_DECL_PW_DOMAINS(icl_pwdoms_aux_b, POWER_DOMAIN_AUX_B);
-I915_DECL_PW_DOMAINS(icl_pwdoms_aux_c, POWER_DOMAIN_AUX_C);
-I915_DECL_PW_DOMAINS(icl_pwdoms_aux_d, POWER_DOMAIN_AUX_D);
-I915_DECL_PW_DOMAINS(icl_pwdoms_aux_e, POWER_DOMAIN_AUX_E);
-I915_DECL_PW_DOMAINS(icl_pwdoms_aux_f, POWER_DOMAIN_AUX_F);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_b,
+ POWER_DOMAIN_AUX_IO_B,
+ POWER_DOMAIN_AUX_B);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_c,
+ POWER_DOMAIN_AUX_IO_C,
+ POWER_DOMAIN_AUX_C);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_d,
+ POWER_DOMAIN_AUX_IO_D,
+ POWER_DOMAIN_AUX_D);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_e,
+ POWER_DOMAIN_AUX_IO_E,
+ POWER_DOMAIN_AUX_E);
+I915_DECL_PW_DOMAINS(icl_pwdoms_aux_f,
+ POWER_DOMAIN_AUX_IO_F,
+ POWER_DOMAIN_AUX_F);
I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt1, POWER_DOMAIN_AUX_TBT1);
I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt2, POWER_DOMAIN_AUX_TBT2);
I915_DECL_PW_DOMAINS(icl_pwdoms_aux_tbt3, POWER_DOMAIN_AUX_TBT3);
@@ -1215,6 +1255,9 @@ I915_DECL_PW_DOMAINS(xelpd_pwdoms_pw_a,
POWER_DOMAIN_PORT_DDI_LANES_TC4, \
POWER_DOMAIN_VGA, \
POWER_DOMAIN_AUDIO_PLAYBACK, \
+ POWER_DOMAIN_AUX_IO_C, \
+ POWER_DOMAIN_AUX_IO_D, \
+ POWER_DOMAIN_AUX_IO_E, \
POWER_DOMAIN_AUX_C, \
POWER_DOMAIN_AUX_D, \
POWER_DOMAIN_AUX_E, \
--
2.37.1