[PATCH v2] drm/amd/pm: Add get_gfx_off_status interface for yellow carp

[shikai.guo]

From: Shikai Guo <shikai....@amd.com>

add get_gfx_off_status interface to yellow_carp_ppt_funcs structure.

Signed-off-by: Shikai Guo <shikai....@amd.com>
---
 .../drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c  | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c 
b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
index 70cbc46341a3..04e56b0b3033 100644
--- a/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
+++ b/drivers/gpu/drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c
@@ -42,6 +42,11 @@
 #undef pr_info
 #undef pr_debug
 
+#define regSMUIO_GFX_MISC_CNTL                                                 
0x00c5
+#define regSMUIO_GFX_MISC_CNTL_BASE_IDX                                        0
+#define SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS_MASK            0x00000006L
+#define SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS__SHIFT          0x1L
+
 #define FEATURE_MASK(feature) (1ULL << feature)
 #define SMC_DPM_FEATURE ( \
        FEATURE_MASK(FEATURE_CCLK_DPM_BIT) | \
@@ -587,6 +592,31 @@ static ssize_t yellow_carp_get_gpu_metrics(struct 
smu_context *smu,
        return sizeof(struct gpu_metrics_v2_1);
 }
 
+/**
+ * yellow_carp_get_gfxoff_status - get gfxoff status
+ *
+ * @smu: smu_context pointer
+ *
+ * This function will be used to get gfxoff status
+ *
+ * Returns 0=GFXOFF(default).
+ * Returns 1=Transition out of GFX State.
+ * Returns 2=Not in GFXOFF.
+ * Returns 3=Transition into GFXOFF.
+ */
+static uint32_t yellow_carp_get_gfxoff_status(struct smu_context *smu)
+{
+       uint32_t reg;
+       uint32_t gfxoff_status = 0;
+       struct amdgpu_device *adev = smu->adev;
+
+       reg = RREG32_SOC15(SMUIO, 0, regSMUIO_GFX_MISC_CNTL);
+       gfxoff_status = (reg & SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS_MASK)
+               >> SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS__SHIFT;
+
+       return gfxoff_status;
+}
+
 static int yellow_carp_set_default_dpm_tables(struct smu_context *smu)
 {
        struct smu_table_context *smu_table = &smu->smu_table;
@@ -1186,6 +1216,7 @@ static const struct pptable_funcs yellow_carp_ppt_funcs = 
{
        .get_pp_feature_mask = smu_cmn_get_pp_feature_mask,
        .set_driver_table_location = smu_v13_0_set_driver_table_location,
        .gfx_off_control = smu_v13_0_gfx_off_control,
+       .get_gfx_off_status = yellow_carp_get_gfxoff_status,
        .post_init = yellow_carp_post_smu_init,
        .mode2_reset = yellow_carp_mode2_reset,
        .get_dpm_ultimate_freq = yellow_carp_get_dpm_ultimate_freq,
-- 
2.25.1