From: Likun Gao <Likun.Gao@xxxxxxx>
Support memory power gating control for LSDMA.
Signed-off-by: Likun Gao <Likun.Gao@xxxxxxx>
Reviewed-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h | 1 +
drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c | 16 +++++++++++++++-
drivers/gpu/drm/amd/amdgpu/soc21.c | 12 +++++++++++-
3 files changed, 27 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
index 9a29f18407b8..7ec7598e7dec 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h
@@ -34,6 +34,7 @@ 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,
diff --git a/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
index b4adb94a080b..1a285b531881 100644
--- a/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c
@@ -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
};
diff --git a/drivers/gpu/drm/amd/amdgpu/soc21.c b/drivers/gpu/drm/amd/amdgpu/soc21.c
index 741ed3ba84d6..3303e02f85d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/soc21.c
+++ b/drivers/gpu/drm/amd/amdgpu/soc21.c
@@ -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;
}
--
2.35.1
