[PATCH] drm/admdgpu: Add get_gfx_off_status interface

[Chen, Guchun]

*@smu: amdgpu_device pointer

I guess a typo here, smu is not amdgpu device pointer.

Regards,
Guchun

-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of shikai.guo at amd.com
Sent: Thursday, July 21, 2022 2:20 PM
To: amd-gfx at lists.freedesktop.org
Cc: Deucher, Alexander <Alexander.Deucher at amd.com>; Liang, Prike <Prike.Liang at amd.com>; Quan, Evan <Evan.Quan at amd.com>; Guo, Shikai <Shikai.Guo at amd.com>
Subject: [PATCH] drm/admdgpu: Add get_gfx_off_status interface

From: Shikai Guo <Shikai.Guo at amd.com>

add get_gfx_off_status interface to yellow_carp_ppt_funcs structure.

Signed-off-by: Shikai Guo <shikai.guo at amd.com>
---
 .../drm/amd/pm/swsmu/smu13/yellow_carp_ppt.c  | 30 +++++++++++++++++++
 1 file changed, 30 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..cac48121d72b 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
@@ -31,6 +31,7 @@
 #include "smu_v13_0_1_ppsmc.h"
 #include "smu_v13_0_1_pmfw.h"
 #include "smu_cmn.h"
+#include "asic_reg/smuio/smuio_13_0_2_offset.h"
 
 /*
  * DO NOT use these for err/warn/info/debug messages.
@@ -42,6 +43,9 @@
 #undef pr_info
 #undef pr_debug
 
+#define SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS_MASK		0x00000006L
+#define SMUIO_GFX_MISC_CNTL__PWR_GFXOFF_STATUS__SHIFT			0x1
+
 #define FEATURE_MASK(feature) (1ULL << feature)  #define SMC_DPM_FEATURE ( \
 	FEATURE_MASK(FEATURE_CCLK_DPM_BIT) | \ @@ -587,6 +591,31 @@ 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: amdgpu_device 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 +1215,7 @@ 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