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From 08b2543d4f6f0302f3e968441df0907bb35946e9 Mon Sep 17 00:00:00 2001
From: Kevin Wang <kevin1.wang@amd.com>
Date: Wed, 27 Mar 2019 14:46:20 +0800
Subject: [PATCH 2342/2940] drm/amd/powerplay: add helper function to get dpm
freq informations
this function can help driver to get ppclk informations
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 | 37 +++++++++++++++++++
.../gpu/drm/amd/powerplay/inc/amdgpu_smu.h | 4 ++
2 files changed, 41 insertions(+)
diff --git a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
index 21a47d08d703..d565db4ce6d8 100644
--- a/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
+++ b/drivers/gpu/drm/amd/powerplay/amdgpu_smu.c
@@ -60,6 +60,43 @@ int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t
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)
+{
+ int ret = 0, clk_id = 0;
+ uint32_t param;
+
+ if (!value)
+ return -EINVAL;
+
+ clk_id = smu_clk_get_index(smu, clk_type);
+ if (clk_id < 0)
+ return clk_id;
+
+ param = (uint32_t)(((clk_id & 0xffff) << 16) | (level & 0xffff));
+
+ ret = smu_send_smc_msg_with_param(smu,SMU_MSG_GetDpmFreqByIndex,
+ param);
+ if (ret)
+ return ret;
+
+ ret = smu_read_smc_arg(smu, ¶m);
+ if (ret)
+ return ret;
+
+ /* BIT31: 0 - Fine grained DPM, 1 - Dicrete DPM
+ * now, we un-support it */
+ *value = param & 0x7fffffff;
+
+ return ret;
+}
+
+int smu_get_dpm_level_count(struct smu_context *smu, enum smu_clk_type clk_type,
+ uint32_t *value)
+{
+ return smu_get_dpm_freq_by_index(smu, clk_type, 0xff, value);
+}
+
int smu_dpm_set_power_gate(struct smu_context *smu, uint32_t block_type,
bool gate)
{
diff --git a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
index 4fc183bd0886..12ab1ee53588 100644
--- a/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/powerplay/inc/amdgpu_smu.h
@@ -928,4 +928,8 @@ extern int smu_handle_task(struct smu_context *smu,
enum amd_dpm_forced_level level,
enum amd_pp_task task_id);
int smu_get_smc_version(struct smu_context *smu, uint32_t *if_version, uint32_t *smu_version);
+int smu_get_dpm_freq_by_index(struct smu_context *smu, enum smu_clk_type clk_type,
+ 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);
#endif
--
2.17.1
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