drm/i915/tgl+: Enable display DC power states on all eDP ports

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.

v2: (Ville)
- Split the change using AUX vs. AUX_IO on port A to a separate patch.
- Select AUX_IO vs. AUX based on crtc_state->has_psr instead of
  is_edp().
v3:
- Rebased on checking intel_encoder_can_psr() instead of crtc->has_psr.
v4:
- Fix warn in intel_display_power_aux_io_domain(). (Ville)

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221114122251.21327-6-imre.deak@intel.com

drivers/gpu/drm/i915/display/intel_ddi.c

@@ -850,6 +850,8 @@ 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
@@ -862,8 +864,8 @@ 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.
 	 */
-	if (dig_port->aux_ch == AUX_CH_A && intel_encoder_can_psr(&dig_port->base))
-		return POWER_DOMAIN_AUX_IO_A;
+	if (intel_encoder_can_psr(&dig_port->base))
+		return intel_display_power_aux_io_domain(i915, dig_port->aux_ch);
 	else
 		return intel_aux_power_domain(dig_port);
 }

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:
@@ -2289,6 +2299,7 @@ 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;
 };
@@ -2303,6 +2314,7 @@ 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,
 	},
@@ -2318,6 +2330,7 @@ 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,
 	}, {
@@ -2328,6 +2341,7 @@ 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,
 	},
@@ -2343,6 +2357,7 @@ 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,
 	}, {
@@ -2353,6 +2368,7 @@ 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,
 	},
@@ -2368,6 +2384,7 @@ 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,
 	}, {
@@ -2378,6 +2395,7 @@ 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,
 	}, {
@@ -2388,6 +2406,7 @@ 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,
 	},
@@ -2465,6 +2484,17 @@ 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)
 {

drivers/gpu/drm/i915/display/intel_display_power.h

@@ -79,6 +79,11 @@ 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,
@@ -251,6 +256,8 @@ 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);

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, \