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From 9f80c1b4234541a65c7ff5bf795043973a7b7c5d Mon Sep 17 00:00:00 2001
From: Kevin Wang <kevin1.wang@amd.com>
Date: Thu, 18 Apr 2019 18:46:04 +0800
Subject: [PATCH 2344/2940] drm/amd/powerplay: add helper function of
smu_get_dpm_freq_range
add this helper function to get dpm clk information (min, max);
Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/powerplay/amdgpu_smu.c | 36 +++++++++++++++++++
.../gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 2 ++
2 files changed, 38 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index d565db4ce6d8..c37f59b3995b 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -60,6 +60,42 @@ int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t
return ret;
}
+int smu_get_dpm_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
+ uint32_t *min, uint32_t *max)
+{
+ int ret = 0, clk_id = 0;
+ uint32_t param = 0;
+
+ if (!min && !max)
+ return -EINVAL;
+
+ clk_id = smu_clk_get_index(smu, clk_type);
+ if (clk_id < 0)
+ return clk_id;
+
+ param = (clk_id & 0xffff) << 16;
+
+ if (max) {
+ ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetMaxDpmFreq, param);
+ if (ret)
+ return ret;
+ ret = smu_read_smc_arg(smu, max);
+ if (ret)
+ return ret;
+ }
+
+ if (min) {
+ ret = smu_send_smc_msg_with_param(smu, SMU_MSG_GetMinDpmFreq, param);
+ if (ret)
+ return ret;
+ ret = smu_read_smc_arg(smu, min);
+ if (ret)
+ return ret;
+ }
+
+ return ret;
+}
+
int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_type,
uint16_t level, uint32_t *value)
{
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 16d6f553ba7f..78993e4ee588 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -939,4 +939,6 @@ int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_typ
uint16_t level, uint32_t *value);
int smu_get_dpm_level_count(struct smu_context *smu, enum smu_clk_type clk_type,
uint32_t *value);
+int smu_get_dpm_freq_range(struct smu_context *smu, enum smu_clk_type clk_type,
+ uint32_t *min, uint32_t *max);
#endif
--
2.17.1
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