[PATCH 3/3] drm/amd/pm: use adverse selection for dpm features unsupported by driver

[Evan Quan]

It's vbios and pmfw instead of driver who decide whether some dpm features
is supported or not. Driver just de-selects those features which are not
permitted on user's request. Thus, we use adverse selects model.

Signed-off-by: Evan Quan <evan.quan at amd.com>
Change-Id: I184ca0950e75d47ed20895f2643ddfa31417dc22
---
 .../drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c  | 85 ++++++-------------
 1 file changed, 24 insertions(+), 61 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
index 03b732bf8cd0..1d454485e0d9 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0_0_ppt.c
@@ -244,79 +244,42 @@ smu_v13_0_0_get_allowed_feature_mask(struct smu_context *smu,
 	if (num > 2)
 		return -EINVAL;
 
-	memset(feature_mask, 0, sizeof(uint32_t) * num);
+	memset(feature_mask, 0xff, sizeof(uint32_t) * num);
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_FW_DATA_READ_BIT);
-
-	if (adev->pm.pp_feature & PP_SCLK_DPM_MASK) {
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_GFXCLK_BIT);
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_GFX_IMU_BIT);
+	if (!(adev->pm.pp_feature & PP_SCLK_DPM_MASK)) {
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DPM_GFXCLK_BIT);
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_GFX_IMU_BIT);
 	}
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_MM_DPM_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_VCN_BIT);
-
-	if ((adev->pg_flags & AMD_PG_SUPPORT_ATHUB) &&
-	    (adev->pg_flags & AMD_PG_SUPPORT_MMHUB))
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_ATHUB_MMHUB_PG_BIT);
+	if (!(adev->pg_flags & AMD_PG_SUPPORT_ATHUB) ||
+	    !(adev->pg_flags & AMD_PG_SUPPORT_MMHUB))
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_ATHUB_MMHUB_PG_BIT);
 
-	if (adev->pm.pp_feature & PP_SOCCLK_DPM_MASK)
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_SOCCLK_BIT);
+	if (!(adev->pm.pp_feature & PP_SOCCLK_DPM_MASK))
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DPM_SOCCLK_BIT);
 
 	/* PMFW 78.58 contains a critical fix for gfxoff feature */
 	smu_cmn_get_smc_version(smu, NULL, &smu_version);
-	if ((smu_version >= 0x004e3a00) &&
-	    (adev->pm.pp_feature & PP_GFXOFF_MASK))
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_GFXOFF_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_THROTTLERS_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_FAN_CONTROL_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DF_CSTATE_BIT);
-
-	if (adev->pm.pp_feature & PP_MCLK_DPM_MASK) {
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_UCLK_BIT);
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_VMEMP_SCALING_BIT);
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_VDDIO_MEM_SCALING_BIT);
+	if ((smu_version < 0x004e3a00) ||
+	     !(adev->pm.pp_feature & PP_GFXOFF_MASK))
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_GFXOFF_BIT);
+
+	if (!(adev->pm.pp_feature & PP_MCLK_DPM_MASK)) {
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DPM_UCLK_BIT);
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_VMEMP_SCALING_BIT);
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_VDDIO_MEM_SCALING_BIT);
 	}
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_MEM_TEMP_READ_BIT);
-
-	if (adev->pm.pp_feature & PP_SCLK_DEEP_SLEEP_MASK)
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_GFXCLK_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_SOCCLK_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_SOC_MPCLK_DS_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_BACO_MPCLK_DS_BIT);
+	if (!(adev->pm.pp_feature & PP_SCLK_DEEP_SLEEP_MASK))
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DS_GFXCLK_BIT);
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_FCLK_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_DCN_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_DCFCLK_BIT);
-
-	if (adev->pm.pp_feature & PP_PCIE_DPM_MASK) {
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_LINK_BIT);
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_LCLK_BIT);
+	if (!(adev->pm.pp_feature & PP_PCIE_DPM_MASK)) {
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DPM_LINK_BIT);
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_DS_LCLK_BIT);
 	}
 
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_BACO_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_MP0CLK_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_FW_DSTATE_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_OUT_OF_BAND_MONITOR_BIT);
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_SOC_CG_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_FCLK_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_FW_CTF_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DS_UCLK_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_VR0HOT_BIT);
-
-	*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_DPM_GFX_POWER_OPTIMIZER_BIT);
-
-	if (adev->pm.pp_feature & PP_ULV_MASK)
-		*(uint64_t *)feature_mask |= FEATURE_MASK(FEATURE_GFX_ULV_BIT);
+	if (!(adev->pm.pp_feature & PP_ULV_MASK))
+		*(uint64_t *)feature_mask &= ~FEATURE_MASK(FEATURE_GFX_ULV_BIT);
 
 	return 0;
 }
-- 
2.34.1