drm/i915/tgl: Add power well support

The patch adds the new power wells introduced by TGL (GEN 12) and
maps these to existing/new power domains. The changes for GEN 12 wrt
to GEN 11 are the following:

- Transcoder#EDP removed from power well#1 (Transcoder#A used in
  low-power mode instead)
- Transcoder#A is now backed by power well#1 instead of power well#3
- The DDI#B/C combo PHY ports are now backed by power well#1 instead of
  power well#3
- New power well#5 added for pipe#D functionality (TODO)
- 2 additional TC ports (TC#5-6) backed by power well#3, 2 port
  specific IO power wells (only for the non-TBT modes) and 4 port
  specific AUX power wells (2-2 for TBT vs. non-TBT modes)
- Power well#2 backs now VDSC/joining for pipe#A instead of VDSC for
  eDP and MIPI DSI (TODO)

On TGL Port DDI#C changed to be a combo PHY (native DP/HDMI) and
BSpec has renamed ports DDI#D-F to TC#4-6 respectively. Thus on ICL we
have the following naming for ports:

- Combo PHYs (native DP/HDMI):
  DDI#A-B
- TBT/non-TBT (TC altmode, native DP/HDMI) PHYs:
  DDI#C-F

Starting from GEN 12 we have the following naming for ports:
- Combo PHYs (native DP/HDMI):
  DDI#A-C
- TBT/non-TBT (TC altmode, native DP/HDMI) PHYs:
  DDI TC#1-6

To save some space in the power domain enum the power domain naming in
the driver reflects the above change, that is power domains TC#1-3 are
added as aliases for DDI#D-F and new power domains are reserved for
TC#4-6.

v2 (Lucas):
  - Separate out the bits and definitions for TGL from the ICL ones.
    Fix use of TRANSCODER_EDP_VDSC, that is now the correct define since
    we don't define TRANSCODER_A_VDSC power domain to spare a one bit in
    the bitmask (suggested by Ville)
v3 (Lucas):
  - Fix missing squashes on v2
  - Rebase on renamed TRANSCODER_EDP_VDSC

Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Anusha Srivatsa <anusha.srivatsa@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: José Roberto de Souza <jose.souza@intel.com>
Signed-off-by: NImre Deak <imre.deak@intel.com>
Signed-off-by: NLucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711173115.28296-9-lucas.demarchi@intel.com

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

@@ -23,8 +23,11 @@ bool intel_display_power_well_is_enabled(struct drm_i915_private *dev_priv,
 					 enum i915_power_well_id power_well_id);
 
 const char *
-intel_display_power_domain_str(enum intel_display_power_domain domain)
+intel_display_power_domain_str(struct drm_i915_private *i915,
+			       enum intel_display_power_domain domain)
 {
+	bool ddi_tc_ports = IS_GEN(i915, 12);
+
 	switch (domain) {
 	case POWER_DOMAIN_DISPLAY_CORE:
 		return "DISPLAY_CORE";
@@ -61,11 +64,23 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 	case POWER_DOMAIN_PORT_DDI_C_LANES:
 		return "PORT_DDI_C_LANES";
 	case POWER_DOMAIN_PORT_DDI_D_LANES:
-		return "PORT_DDI_D_LANES";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_D_LANES !=
+			     POWER_DOMAIN_PORT_DDI_TC1_LANES);
+		return ddi_tc_ports ? "PORT_DDI_TC1_LANES" : "PORT_DDI_D_LANES";
 	case POWER_DOMAIN_PORT_DDI_E_LANES:
-		return "PORT_DDI_E_LANES";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_E_LANES !=
+			     POWER_DOMAIN_PORT_DDI_TC2_LANES);
+		return ddi_tc_ports ? "PORT_DDI_TC2_LANES" : "PORT_DDI_E_LANES";
 	case POWER_DOMAIN_PORT_DDI_F_LANES:
-		return "PORT_DDI_F_LANES";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_F_LANES !=
+			     POWER_DOMAIN_PORT_DDI_TC3_LANES);
+		return ddi_tc_ports ? "PORT_DDI_TC3_LANES" : "PORT_DDI_F_LANES";
+	case POWER_DOMAIN_PORT_DDI_TC4_LANES:
+		return "PORT_DDI_TC4_LANES";
+	case POWER_DOMAIN_PORT_DDI_TC5_LANES:
+		return "PORT_DDI_TC5_LANES";
+	case POWER_DOMAIN_PORT_DDI_TC6_LANES:
+		return "PORT_DDI_TC6_LANES";
 	case POWER_DOMAIN_PORT_DDI_A_IO:
 		return "PORT_DDI_A_IO";
 	case POWER_DOMAIN_PORT_DDI_B_IO:
@@ -73,11 +88,23 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 	case POWER_DOMAIN_PORT_DDI_C_IO:
 		return "PORT_DDI_C_IO";
 	case POWER_DOMAIN_PORT_DDI_D_IO:
-		return "PORT_DDI_D_IO";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_D_IO !=
+			     POWER_DOMAIN_PORT_DDI_TC1_IO);
+		return ddi_tc_ports ? "PORT_DDI_TC1_IO" : "PORT_DDI_D_IO";
 	case POWER_DOMAIN_PORT_DDI_E_IO:
-		return "PORT_DDI_E_IO";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_E_IO !=
+			     POWER_DOMAIN_PORT_DDI_TC2_IO);
+		return ddi_tc_ports ? "PORT_DDI_TC2_IO" : "PORT_DDI_E_IO";
 	case POWER_DOMAIN_PORT_DDI_F_IO:
-		return "PORT_DDI_F_IO";
+		BUILD_BUG_ON(POWER_DOMAIN_PORT_DDI_F_IO !=
+			     POWER_DOMAIN_PORT_DDI_TC3_IO);
+		return ddi_tc_ports ? "PORT_DDI_TC3_IO" : "PORT_DDI_F_IO";
+	case POWER_DOMAIN_PORT_DDI_TC4_IO:
+		return "PORT_DDI_TC4_IO";
+	case POWER_DOMAIN_PORT_DDI_TC5_IO:
+		return "PORT_DDI_TC5_IO";
+	case POWER_DOMAIN_PORT_DDI_TC6_IO:
+		return "PORT_DDI_TC6_IO";
 	case POWER_DOMAIN_PORT_DSI:
 		return "PORT_DSI";
 	case POWER_DOMAIN_PORT_CRT:
@@ -95,11 +122,20 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 	case POWER_DOMAIN_AUX_C:
 		return "AUX_C";
 	case POWER_DOMAIN_AUX_D:
-		return "AUX_D";
+		BUILD_BUG_ON(POWER_DOMAIN_AUX_D != POWER_DOMAIN_AUX_TC1);
+		return ddi_tc_ports ? "AUX_TC1" : "AUX_D";
 	case POWER_DOMAIN_AUX_E:
-		return "AUX_E";
+		BUILD_BUG_ON(POWER_DOMAIN_AUX_E != POWER_DOMAIN_AUX_TC2);
+		return ddi_tc_ports ? "AUX_TC2" : "AUX_E";
 	case POWER_DOMAIN_AUX_F:
-		return "AUX_F";
+		BUILD_BUG_ON(POWER_DOMAIN_AUX_F != POWER_DOMAIN_AUX_TC3);
+		return ddi_tc_ports ? "AUX_TC3" : "AUX_F";
+	case POWER_DOMAIN_AUX_TC4:
+		return "AUX_TC4";
+	case POWER_DOMAIN_AUX_TC5:
+		return "AUX_TC5";
+	case POWER_DOMAIN_AUX_TC6:
+		return "AUX_TC6";
 	case POWER_DOMAIN_AUX_IO_A:
 		return "AUX_IO_A";
 	case POWER_DOMAIN_AUX_TBT1:
@@ -110,6 +146,10 @@ intel_display_power_domain_str(enum intel_display_power_domain domain)
 		return "AUX_TBT3";
 	case POWER_DOMAIN_AUX_TBT4:
 		return "AUX_TBT4";
+	case POWER_DOMAIN_AUX_TBT5:
+		return "AUX_TBT5";
+	case POWER_DOMAIN_AUX_TBT6:
+		return "AUX_TBT6";
 	case POWER_DOMAIN_GMBUS:
 		return "GMBUS";
 	case POWER_DOMAIN_INIT:
@@ -1666,12 +1706,15 @@ __async_put_domains_state_ok(struct i915_power_domains *power_domains)
 static void print_power_domains(struct i915_power_domains *power_domains,
 				const char *prefix, u64 mask)
 {
+	struct drm_i915_private *i915 =
+		container_of(power_domains, struct drm_i915_private,
+			     power_domains);
 	enum intel_display_power_domain domain;
 
 	DRM_DEBUG_DRIVER("%s (%lu):\n", prefix, hweight64(mask));
 	for_each_power_domain(domain, mask)
 		DRM_DEBUG_DRIVER("%s use_count %d\n",
-				 intel_display_power_domain_str(domain),
+				 intel_display_power_domain_str(i915, domain),
 				 power_domains->domain_use_count[domain]);
 }
 
@@ -1841,7 +1884,7 @@ __intel_display_power_put_domain(struct drm_i915_private *dev_priv,
 {
 	struct i915_power_domains *power_domains;
 	struct i915_power_well *power_well;
-	const char *name = intel_display_power_domain_str(domain);
+	const char *name = intel_display_power_domain_str(dev_priv, domain);
 
 	power_domains = &dev_priv->power_domains;
 
@@ -2497,6 +2540,88 @@ void intel_display_power_put(struct drm_i915_private *dev_priv,
 #define ICL_AUX_TBT4_IO_POWER_DOMAINS (			\
 	BIT_ULL(POWER_DOMAIN_AUX_TBT4))
 
+/* TODO: TGL_PW_5_POWER_DOMAINS: PIPE_D */
+#define TGL_PW_4_POWER_DOMAINS (			\
+	BIT_ULL(POWER_DOMAIN_PIPE_C) |			\
+	BIT_ULL(POWER_DOMAIN_PIPE_C_PANEL_FITTER) |	\
+	BIT_ULL(POWER_DOMAIN_INIT))
+
+#define TGL_PW_3_POWER_DOMAINS (			\
+	TGL_PW_4_POWER_DOMAINS |			\
+	BIT_ULL(POWER_DOMAIN_PIPE_B) |			\
+	BIT_ULL(POWER_DOMAIN_TRANSCODER_B) |		\
+	BIT_ULL(POWER_DOMAIN_TRANSCODER_C) |		\
+	/* TODO: TRANSCODER_D */			\
+	BIT_ULL(POWER_DOMAIN_PIPE_B_PANEL_FITTER) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC1_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC1_IO) |		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC2_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC2_IO) |		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC3_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC3_IO) |		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC4_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC4_IO) |		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC5_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC5_IO) |		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC6_LANES) |	\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC6_IO) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC1) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC2) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC3) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC4) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC5) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC6) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT1) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT2) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT3) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT4) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT5) |		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT6) |		\
+	BIT_ULL(POWER_DOMAIN_VGA) |			\
+	BIT_ULL(POWER_DOMAIN_AUDIO) |			\
+	BIT_ULL(POWER_DOMAIN_INIT))
+
+#define TGL_PW_2_POWER_DOMAINS (			\
+	TGL_PW_3_POWER_DOMAINS |			\
+	BIT_ULL(POWER_DOMAIN_TRANSCODER_VDSC_PW2) |	\
+	BIT_ULL(POWER_DOMAIN_INIT))
+
+#define TGL_DISPLAY_DC_OFF_POWER_DOMAINS (		\
+	TGL_PW_2_POWER_DOMAINS |			\
+	BIT_ULL(POWER_DOMAIN_MODESET) |			\
+	BIT_ULL(POWER_DOMAIN_AUX_A) |			\
+	BIT_ULL(POWER_DOMAIN_INIT))
+
+#define TGL_DDI_IO_TC1_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC1_IO))
+#define TGL_DDI_IO_TC2_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC2_IO))
+#define TGL_DDI_IO_TC3_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC3_IO))
+#define TGL_DDI_IO_TC4_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC4_IO))
+#define TGL_DDI_IO_TC5_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC5_IO))
+#define TGL_DDI_IO_TC6_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_PORT_DDI_TC6_IO))
+
+#define TGL_AUX_TC1_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC1))
+#define TGL_AUX_TC2_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC2))
+#define TGL_AUX_TC3_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC3))
+#define TGL_AUX_TC4_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC4))
+#define TGL_AUX_TC5_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC5))
+#define TGL_AUX_TC6_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TC6))
+#define TGL_AUX_TBT5_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT5))
+#define TGL_AUX_TBT6_IO_POWER_DOMAINS (		\
+	BIT_ULL(POWER_DOMAIN_AUX_TBT6))
+
 static const struct i915_power_well_ops i9xx_always_on_power_well_ops = {
 	.sync_hw = i9xx_power_well_sync_hw_noop,
 	.enable = i9xx_always_on_power_well_noop,
@@ -3454,6 +3579,324 @@ static const struct i915_power_well_desc icl_power_wells[] = {
 	},
 };
 
+static const struct i915_power_well_desc tgl_power_wells[] = {
+	{
+		.name = "always-on",
+		.always_on = true,
+		.domains = POWER_DOMAIN_MASK,
+		.ops = &i9xx_always_on_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+	},
+	{
+		.name = "power well 1",
+		/* Handled by the DMC firmware */
+		.always_on = true,
+		.domains = 0,
+		.ops = &hsw_power_well_ops,
+		.id = SKL_DISP_PW_1,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_1,
+			.hsw.has_fuses = true,
+		},
+	},
+	{
+		.name = "DC off",
+		.domains = TGL_DISPLAY_DC_OFF_POWER_DOMAINS,
+		.ops = &gen9_dc_off_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+	},
+	{
+		.name = "power well 2",
+		.domains = TGL_PW_2_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = SKL_DISP_PW_2,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_2,
+			.hsw.has_fuses = true,
+		},
+	},
+	{
+		.name = "power well 3",
+		.domains = TGL_PW_3_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_3,
+			.hsw.irq_pipe_mask = BIT(PIPE_B),
+			.hsw.has_vga = true,
+			.hsw.has_fuses = true,
+		},
+	},
+	{
+		.name = "DDI A IO",
+		.domains = ICL_DDI_IO_A_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_A,
+		}
+	},
+	{
+		.name = "DDI B IO",
+		.domains = ICL_DDI_IO_B_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_B,
+		}
+	},
+	{
+		.name = "DDI C IO",
+		.domains = ICL_DDI_IO_C_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_DDI_C,
+		}
+	},
+	{
+		.name = "DDI TC1 IO",
+		.domains = TGL_DDI_IO_TC1_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC1,
+		},
+	},
+	{
+		.name = "DDI TC2 IO",
+		.domains = TGL_DDI_IO_TC2_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC2,
+		},
+	},
+	{
+		.name = "DDI TC3 IO",
+		.domains = TGL_DDI_IO_TC3_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC3,
+		},
+	},
+	{
+		.name = "DDI TC4 IO",
+		.domains = TGL_DDI_IO_TC4_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC4,
+		},
+	},
+	{
+		.name = "DDI TC5 IO",
+		.domains = TGL_DDI_IO_TC5_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC5,
+		},
+	},
+	{
+		.name = "DDI TC6 IO",
+		.domains = TGL_DDI_IO_TC6_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_ddi_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_DDI_TC6,
+		},
+	},
+	{
+		.name = "AUX A",
+		.domains = ICL_AUX_A_IO_POWER_DOMAINS,
+		.ops = &icl_combo_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_A,
+		},
+	},
+	{
+		.name = "AUX B",
+		.domains = ICL_AUX_B_IO_POWER_DOMAINS,
+		.ops = &icl_combo_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_B,
+		},
+	},
+	{
+		.name = "AUX C",
+		.domains = ICL_AUX_C_IO_POWER_DOMAINS,
+		.ops = &icl_combo_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_AUX_C,
+		},
+	},
+	{
+		.name = "AUX TC1",
+		.domains = TGL_AUX_TC1_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC1,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TC2",
+		.domains = TGL_AUX_TC2_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC2,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TC3",
+		.domains = TGL_AUX_TC3_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC3,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TC4",
+		.domains = TGL_AUX_TC4_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC4,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TC5",
+		.domains = TGL_AUX_TC5_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC5,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TC6",
+		.domains = TGL_AUX_TC6_IO_POWER_DOMAINS,
+		.ops = &icl_tc_phy_aux_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TC6,
+			.hsw.is_tc_tbt = false,
+		},
+	},
+	{
+		.name = "AUX TBT1",
+		.domains = ICL_AUX_TBT1_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT1,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "AUX TBT2",
+		.domains = ICL_AUX_TBT2_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT2,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "AUX TBT3",
+		.domains = ICL_AUX_TBT3_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT3,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "AUX TBT4",
+		.domains = ICL_AUX_TBT4_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT4,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "AUX TBT5",
+		.domains = TGL_AUX_TBT5_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT5,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "AUX TBT6",
+		.domains = TGL_AUX_TBT6_IO_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &icl_aux_power_well_regs,
+			.hsw.idx = TGL_PW_CTL_IDX_AUX_TBT6,
+			.hsw.is_tc_tbt = true,
+		},
+	},
+	{
+		.name = "power well 4",
+		.domains = TGL_PW_4_POWER_DOMAINS,
+		.ops = &hsw_power_well_ops,
+		.id = DISP_PW_ID_NONE,
+		{
+			.hsw.regs = &hsw_power_well_regs,
+			.hsw.idx = ICL_PW_CTL_IDX_PW_4,
+			.hsw.has_fuses = true,
+			.hsw.irq_pipe_mask = BIT(PIPE_C),
+		}
+	},
+	/* TODO: power well 5 for pipe D */
+};
+
 static int
 sanitize_disable_power_well_option(const struct drm_i915_private *dev_priv,
 				   int disable_power_well)
@@ -3581,7 +4024,9 @@ int intel_power_domains_init(struct drm_i915_private *dev_priv)
 	 * The enabling order will be from lower to higher indexed wells,
 	 * the disabling order is reversed.
 	 */
-	if (IS_GEN(dev_priv, 11)) {
+	if (IS_GEN(dev_priv, 12)) {
+		err = set_power_wells(power_domains, tgl_power_wells);
+	} else if (IS_GEN(dev_priv, 11)) {
 		err = set_power_wells(power_domains, icl_power_wells);
 	} else if (IS_CANNONLAKE(dev_priv)) {
 		err = set_power_wells(power_domains, cnl_power_wells);
@@ -4645,7 +5090,8 @@ static void intel_power_domains_dump_info(struct drm_i915_private *i915)
 
 		for_each_power_domain(domain, power_well->desc->domains)
 			DRM_DEBUG_DRIVER("  %-23s %d\n",
-					 intel_display_power_domain_str(domain),
+					 intel_display_power_domain_str(i915,
+									domain),
 					 power_domains->domain_use_count[domain]);
 	}
 }

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

@@ -33,14 +33,29 @@ enum intel_display_power_domain {
 	POWER_DOMAIN_PORT_DDI_B_LANES,
 	POWER_DOMAIN_PORT_DDI_C_LANES,
 	POWER_DOMAIN_PORT_DDI_D_LANES,
+	POWER_DOMAIN_PORT_DDI_TC1_LANES = POWER_DOMAIN_PORT_DDI_D_LANES,
 	POWER_DOMAIN_PORT_DDI_E_LANES,
+	POWER_DOMAIN_PORT_DDI_TC2_LANES = POWER_DOMAIN_PORT_DDI_E_LANES,
 	POWER_DOMAIN_PORT_DDI_F_LANES,
+	POWER_DOMAIN_PORT_DDI_TC3_LANES = POWER_DOMAIN_PORT_DDI_F_LANES,
+	POWER_DOMAIN_PORT_DDI_TC4_LANES,
+	POWER_DOMAIN_PORT_DDI_TC5_LANES,
+	POWER_DOMAIN_PORT_DDI_TC6_LANES,
 	POWER_DOMAIN_PORT_DDI_A_IO,
 	POWER_DOMAIN_PORT_DDI_B_IO,
 	POWER_DOMAIN_PORT_DDI_C_IO,
 	POWER_DOMAIN_PORT_DDI_D_IO,
+	POWER_DOMAIN_PORT_DDI_TC1_IO = POWER_DOMAIN_PORT_DDI_D_IO,
 	POWER_DOMAIN_PORT_DDI_E_IO,
+	POWER_DOMAIN_PORT_DDI_TC2_IO = POWER_DOMAIN_PORT_DDI_E_IO,
 	POWER_DOMAIN_PORT_DDI_F_IO,
+	POWER_DOMAIN_PORT_DDI_TC3_IO = POWER_DOMAIN_PORT_DDI_F_IO,
+	POWER_DOMAIN_PORT_DDI_G_IO,
+	POWER_DOMAIN_PORT_DDI_TC4_IO = POWER_DOMAIN_PORT_DDI_G_IO,
+	POWER_DOMAIN_PORT_DDI_H_IO,
+	POWER_DOMAIN_PORT_DDI_TC5_IO = POWER_DOMAIN_PORT_DDI_H_IO,
+	POWER_DOMAIN_PORT_DDI_I_IO,
+	POWER_DOMAIN_PORT_DDI_TC6_IO = POWER_DOMAIN_PORT_DDI_I_IO,
 	POWER_DOMAIN_PORT_DSI,
 	POWER_DOMAIN_PORT_CRT,
 	POWER_DOMAIN_PORT_OTHER,
@@ -50,13 +65,21 @@ enum intel_display_power_domain {
 	POWER_DOMAIN_AUX_B,
 	POWER_DOMAIN_AUX_C,
 	POWER_DOMAIN_AUX_D,
+	POWER_DOMAIN_AUX_TC1 = POWER_DOMAIN_AUX_D,
 	POWER_DOMAIN_AUX_E,
+	POWER_DOMAIN_AUX_TC2 = POWER_DOMAIN_AUX_E,
 	POWER_DOMAIN_AUX_F,
+	POWER_DOMAIN_AUX_TC3 = POWER_DOMAIN_AUX_F,
+	POWER_DOMAIN_AUX_TC4,
+	POWER_DOMAIN_AUX_TC5,
+	POWER_DOMAIN_AUX_TC6,
 	POWER_DOMAIN_AUX_IO_A,
 	POWER_DOMAIN_AUX_TBT1,
 	POWER_DOMAIN_AUX_TBT2,
 	POWER_DOMAIN_AUX_TBT3,
 	POWER_DOMAIN_AUX_TBT4,
+	POWER_DOMAIN_AUX_TBT5,
+	POWER_DOMAIN_AUX_TBT6,
 	POWER_DOMAIN_GMBUS,
 	POWER_DOMAIN_MODESET,
 	POWER_DOMAIN_GT_IRQ,
@@ -229,7 +252,8 @@ void bxt_display_core_init(struct drm_i915_private *dev_priv, bool resume);
 void bxt_display_core_uninit(struct drm_i915_private *dev_priv);
 
 const char *
-intel_display_power_domain_str(enum intel_display_power_domain domain);
+intel_display_power_domain_str(struct drm_i915_private *i915,
+			       enum intel_display_power_domain domain);
 
 bool intel_display_power_is_enabled(struct drm_i915_private *dev_priv,
 				    enum intel_display_power_domain domain);

drivers/gpu/drm/i915/i915_debugfs.c

@@ -2466,7 +2466,8 @@ static int i915_power_domain_info(struct seq_file *m, void *unused)
 
 		for_each_power_domain(power_domain, power_well->desc->domains)
 			seq_printf(m, "  %-23s %d\n",
-				 intel_display_power_domain_str(power_domain),
+				 intel_display_power_domain_str(dev_priv,
+								power_domain),
 				 power_domains->domain_use_count[power_domain]);
 	}
 

drivers/gpu/drm/i915/i915_reg.h

@@ -9147,7 +9147,7 @@ enum {
 #define   GLK_PW_CTL_IDX_DDI_A			1
 #define   SKL_PW_CTL_IDX_MISC_IO		0
 
-/* ICL - power wells */
+/* ICL/TGL - power wells */
 #define   ICL_PW_CTL_IDX_PW_4			3
 #define   ICL_PW_CTL_IDX_PW_3			2
 #define   ICL_PW_CTL_IDX_PW_2			1
@@ -9156,13 +9156,25 @@ enum {
 #define ICL_PWR_WELL_CTL_AUX1			_MMIO(0x45440)
 #define ICL_PWR_WELL_CTL_AUX2			_MMIO(0x45444)
 #define ICL_PWR_WELL_CTL_AUX4			_MMIO(0x4544C)
+#define   TGL_PW_CTL_IDX_AUX_TBT6		14
+#define   TGL_PW_CTL_IDX_AUX_TBT5		13
+#define   TGL_PW_CTL_IDX_AUX_TBT4		12
 #define   ICL_PW_CTL_IDX_AUX_TBT4		11
+#define   TGL_PW_CTL_IDX_AUX_TBT3		11
 #define   ICL_PW_CTL_IDX_AUX_TBT3		10
+#define   TGL_PW_CTL_IDX_AUX_TBT2		10
 #define   ICL_PW_CTL_IDX_AUX_TBT2		9
+#define   TGL_PW_CTL_IDX_AUX_TBT1		9
 #define   ICL_PW_CTL_IDX_AUX_TBT1		8
+#define   TGL_PW_CTL_IDX_AUX_TC6		8
+#define   TGL_PW_CTL_IDX_AUX_TC5		7
+#define   TGL_PW_CTL_IDX_AUX_TC4		6
 #define   ICL_PW_CTL_IDX_AUX_F			5
+#define   TGL_PW_CTL_IDX_AUX_TC3		5
 #define   ICL_PW_CTL_IDX_AUX_E			4
+#define   TGL_PW_CTL_IDX_AUX_TC2		4
 #define   ICL_PW_CTL_IDX_AUX_D			3
+#define   TGL_PW_CTL_IDX_AUX_TC1		3
 #define   ICL_PW_CTL_IDX_AUX_C			2
 #define   ICL_PW_CTL_IDX_AUX_B			1
 #define   ICL_PW_CTL_IDX_AUX_A			0
@@ -9170,9 +9182,15 @@ enum {
 #define ICL_PWR_WELL_CTL_DDI1			_MMIO(0x45450)
 #define ICL_PWR_WELL_CTL_DDI2			_MMIO(0x45454)
 #define ICL_PWR_WELL_CTL_DDI4			_MMIO(0x4545C)
+#define   TGL_PW_CTL_IDX_DDI_TC6		8
+#define   TGL_PW_CTL_IDX_DDI_TC5		7
+#define   TGL_PW_CTL_IDX_DDI_TC4		6
 #define   ICL_PW_CTL_IDX_DDI_F			5
+#define   TGL_PW_CTL_IDX_DDI_TC3		5
 #define   ICL_PW_CTL_IDX_DDI_E			4
+#define   TGL_PW_CTL_IDX_DDI_TC2		4
 #define   ICL_PW_CTL_IDX_DDI_D			3
+#define   TGL_PW_CTL_IDX_DDI_TC1		3
 #define   ICL_PW_CTL_IDX_DDI_C			2
 #define   ICL_PW_CTL_IDX_DDI_B			1
 #define   ICL_PW_CTL_IDX_DDI_A			0