drm/amd/display: add Pollock IDs, fix Pollock & Dali clk mgr construct

[WHY]
Only a single voltage level should be available to Pollock (min level)
Pollock & Dali get misidentified as Renoir, use wrong clk mgr constructor

[HOW]
Add provided Pollock IDs to ASIC Rev. ID list.
Create new Pollock ASIC RID check, fix RV2 & Dali ASIC checks.
Check RID and set max voltage level to 0 if Pollock is detected.
Work around broken ASICREV_IS_RENOIR, IS_RAVEN2, etc. checks by
performing Dali/Pollock checks before they can be misidentified as RN.

Signed-off-by: Michael Strauss <[e-mail]>
Signed-off-by: Bhawanpreet Lakha <[e-mail]>
Reviewed-by: Huang Rui <[e-mail]>
Signed-off-by: Alex Deucher <[e-mail]>

drivers/gpu/drm/amd/display/dc/calcs/dcn_calcs.c

···
 
 unsigned int get_highest_allowed_voltage_level(uint32_t hw_internal_rev)
 {
-	/* for dali, the highest voltage level we want is 0 */
-	if (ASICREV_IS_DALI(hw_internal_rev))
+	/* for dali & pollock, the highest voltage level we want is 0 */
+	if (ASICREV_IS_POLLOCK(hw_internal_rev) || ASICREV_IS_DALI(hw_internal_rev))
 		return 0;
 
 	/* we are ok with all levels */

drivers/gpu/drm/amd/display/dc/clk_mgr/clk_mgr.c

···
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
 	case FAMILY_RV:
-		if (ASICREV_IS_DALI(asic_id.hw_internal_rev)) {
+		if (ASICREV_IS_DALI(asic_id.hw_internal_rev) ||
+				ASICREV_IS_POLLOCK(asic_id.hw_internal_rev)) {
 			/* TEMP: this check has to come before ASICREV_IS_RENOIR */
-			/* which also incorrectly returns true for Dali */
+			/* which also incorrectly returns true for Dali/Pollock*/
 			rv2_clk_mgr_construct(ctx, clk_mgr, pp_smu);
 			break;
 		}
-
 		if (ASICREV_IS_RENOIR(asic_id.hw_internal_rev)) {
 			rn_clk_mgr_construct(ctx, clk_mgr, pp_smu, dccg);
 			break;

drivers/gpu/drm/amd/display/include/dal_asic_id.h

···
 #define PICASSO_A0 0x41
 /* DCN1_01 */
 #define RAVEN2_A0 0x81
+#define RAVEN2_15D8_REV_94 0x94
+#define RAVEN2_15D8_REV_95 0x95
 #define RAVEN2_15D8_REV_E3 0xE3
 #define RAVEN2_15D8_REV_E4 0xE4
+#define RAVEN2_15D8_REV_E9 0xE9
+#define RAVEN2_15D8_REV_EA 0xEA
+#define RAVEN2_15D8_REV_EB 0xEB
 #define RAVEN1_F0 0xF0
 #define RAVEN_UNKNOWN 0xFF
 #ifndef ASICREV_IS_RAVEN
···
 #define ASICREV_IS_RV1_F0(eChipRev) ((eChipRev >= RAVEN1_F0) && (eChipRev < RAVEN_UNKNOWN))
 #define ASICREV_IS_DALI(eChipRev) ((eChipRev == RAVEN2_15D8_REV_E3) \
 		|| (eChipRev == RAVEN2_15D8_REV_E4))
+#define ASICREV_IS_POLLOCK(eChipRev) (eChipRev == RAVEN2_15D8_REV_94 \
+		|| eChipRev == RAVEN2_15D8_REV_95 \
+			|| eChipRev == RAVEN2_15D8_REV_E9 \
+				|| eChipRev == RAVEN2_15D8_REV_EA \
+					|| eChipRev == RAVEN2_15D8_REV_EB)
 
 #define FAMILY_RV 142 /* DCN 1*/