Commit 41967850 authored by Likun Gao's avatar Likun Gao Committed by Alex Deucher
Browse files

drm/amdgpu: support memory power gating for lsdma 



Support memory power gating control for LSDMA.

Signed-off-by: default avatarLikun Gao <Likun.Gao@amd.com>
Reviewed-by: default avatarHawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 74c9b2e7

drivers/gpu/drm/amd/amdgpu/amdgpu_lsdma.h

+1 −0
Original line number Diff line number Diff line
@@ -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,

drivers/gpu/drm/amd/amdgpu/lsdma_v6_0.c

+15 −1
Original line number Diff line number Diff line
@@ -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

};

drivers/gpu/drm/amd/amdgpu/soc21.c

+11 −1
Original line number Diff line number Diff line
@@ -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;

}