drm/amd/display: enable abm on dcn2

[Why]
ABM is currently not enabled on DCN2.

[How]
Update the register name list for DCN2 and un-comment the code that
creates the abm object.
Signed-off-by: Josip Pavic <Josip.Pavic@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dce/dce_abm.h

@@ -67,6 +67,22 @@
 	SRI(DC_ABM1_HGLS_REG_READ_PROGRESS, ABM, id), \
 	NBIO_SR(BIOS_SCRATCH_2)
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#define ABM_DCN20_REG_LIST() \
+	ABM_COMMON_REG_LIST_DCE_BASE(), \
+	SR(DC_ABM1_HG_SAMPLE_RATE), \
+	SR(DC_ABM1_LS_SAMPLE_RATE), \
+	SR(BL1_PWM_BL_UPDATE_SAMPLE_RATE), \
+	SR(DC_ABM1_HG_MISC_CTRL), \
+	SR(DC_ABM1_IPCSC_COEFF_SEL), \
+	SR(BL1_PWM_CURRENT_ABM_LEVEL), \
+	SR(BL1_PWM_TARGET_ABM_LEVEL), \
+	SR(BL1_PWM_USER_LEVEL), \
+	SR(DC_ABM1_LS_MIN_MAX_PIXEL_VALUE_THRES), \
+	SR(DC_ABM1_HGLS_REG_READ_PROGRESS), \
+	NBIO_SR(BIOS_SCRATCH_2)
+#endif
+
 #define ABM_SF(reg_name, field_name, post_fix)\
 	.field_name = reg_name ## __ ## field_name ## post_fix
 
@@ -147,6 +163,10 @@
 	ABM_SF(ABM0_DC_ABM1_HGLS_REG_READ_PROGRESS, \
 			ABM1_BL_REG_READ_MISSED_FRAME_CLEAR, mask_sh)
 
+#if defined(CONFIG_DRM_AMD_DC_DCN2_0)
+#define ABM_MASK_SH_LIST_DCN20(mask_sh) ABM_MASK_SH_LIST_DCE110(mask_sh)
+#endif
+
 #define ABM_REG_FIELD_LIST(type) \
 	type ABM1_HG_NUM_OF_BINS_SEL; \
 	type ABM1_HG_VMAX_SEL; \

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_resource.c

@@ -271,19 +271,19 @@ static const struct dce_dmcu_shift dmcu_shift = {
 static const struct dce_dmcu_mask dmcu_mask = {
 		DMCU_MASK_SH_LIST_DCN10(_MASK)
 };
-/*
+
 static const struct dce_abm_registers abm_regs = {
-		ABM_DCN10_REG_LIST(0)
+		ABM_DCN20_REG_LIST()
 };
 
 static const struct dce_abm_shift abm_shift = {
-		ABM_MASK_SH_LIST_DCN10(__SHIFT)
+		ABM_MASK_SH_LIST_DCN20(__SHIFT)
 };
 
 static const struct dce_abm_mask abm_mask = {
-		ABM_MASK_SH_LIST_DCN10(_MASK)
+		ABM_MASK_SH_LIST_DCN20(_MASK)
 };
-*/
+
 #define audio_regs(id)\
 [id] = {\
 		AUD_COMMON_REG_LIST(id)\
@@ -2811,7 +2811,7 @@ static bool construct(
 		goto create_fail;
 	}
 
-	/*pool->base.abm = dce_abm_create(ctx,
+	pool->base.abm = dce_abm_create(ctx,
 			&abm_regs,
 			&abm_shift,
 			&abm_mask);
@@ -2819,7 +2819,7 @@ static bool construct(
 		dm_error("DC: failed to create abm!\n");
 		BREAK_TO_DEBUGGER();
 		goto create_fail;
-	}*/
+	}
 
 	pool->base.pp_smu = dcn20_pp_smu_create(ctx);