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drm/amdgpu: support memory power gating for lsdma

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Support memory power gating control for LSDMA.

Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Likun Gao
2022-05-06 14:53:31 -04:00
committed by Alex Deucher
parent 74c9b2e704
commit 41967850e4
3 changed files with 27 additions and 2 deletions
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1
drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
View File

@@ -33,6 +33,7 @@ struct amdgpu_lsdma_funcs {
uint64_t dst_addr, uint64_t size);
int (*fill_mem)(struct amdgpu_device *adev, uint64_t dst_addr,
uint32_t data, uint64_t size);
void (*update_memory_power_gating)(struct amdgpu_device *adev, bool enable);
};
int amdgpu_lsdma_copy_mem(struct amdgpu_device *adev, uint64_t src_addr,

16
drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
View File

@@ -101,7 +101,21 @@ static int lsdma_v6_0_fill_mem(struct amdgpu_device *adev,
return ret;
}
static void lsdma_v6_0_update_memory_power_gating(struct amdgpu_device *adev,
bool enable)
{
uint32_t tmp;
tmp = RREG32_SOC15(LSDMA, 0, regLSDMA_MEM_POWER_CTRL);
tmp = REG_SET_FIELD(tmp, LSDMA_MEM_POWER_CTRL, MEM_POWER_CTRL_EN, 0);
WREG32_SOC15(LSDMA, 0, regLSDMA_MEM_POWER_CTRL, tmp);
tmp = REG_SET_FIELD(tmp, LSDMA_MEM_POWER_CTRL, MEM_POWER_CTRL_EN, enable);
WREG32_SOC15(LSDMA, 0, regLSDMA_MEM_POWER_CTRL, tmp);
}
const struct amdgpu_lsdma_funcs lsdma_v6_0_funcs = {
.copy_mem = lsdma_v6_0_copy_mem,
.fill_mem = lsdma_v6_0_fill_mem
.fill_mem = lsdma_v6_0_fill_mem,
.update_memory_power_gating = lsdma_v6_0_update_memory_power_gating
};

12
drivers/gpu/drm/amd/amdgpu/soc21.c
View File

@@ -676,7 +676,17 @@ static int soc21_common_set_clockgating_state(void *handle,
static int soc21_common_set_powergating_state(void *handle,
enum amd_powergating_state state)
{
/* TODO */
struct amdgpu_device *adev = (struct amdgpu_device *)handle;
switch (adev->ip_versions[LSDMA_HWIP][0]) {
case IP_VERSION(6, 0, 0):
adev->lsdma.funcs->update_memory_power_gating(adev,
state == AMD_PG_STATE_GATE);
break;
default:
break;
}
return 0;
}