From: Huang Rui Date: Fri, 24 Mar 2017 03:04:27 +0000 (+0800) Subject: drm/amdgpu: add get_clockgating for sdma v4 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2eba890cb8f026f979df8e25ea4acd25088a82ae;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git drm/amdgpu: add get_clockgating for sdma v4 Signed-off-by: Huang Rui Reviewed-by: Alex Deucher Reviewed-by: Edward O'Callaghan Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c index 45c79f8950aa..46d45cb69070 100644 --- a/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c +++ b/drivers/gpu/drm/amd/amdgpu/sdma_v4_0.c @@ -1408,6 +1408,25 @@ static int sdma_v4_0_set_powergating_state(void *handle, return 0; } +static void sdma_v4_0_get_clockgating_state(void *handle, u32 *flags) +{ + struct amdgpu_device *adev = (struct amdgpu_device *)handle; + int data; + + if (amdgpu_sriov_vf(adev)) + *flags = 0; + + /* AMD_CG_SUPPORT_SDMA_MGCG */ + data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_CLK_CTRL)); + if (!(data & SDMA0_CLK_CTRL__SOFT_OVERRIDE7_MASK)) + *flags |= AMD_CG_SUPPORT_SDMA_MGCG; + + /* AMD_CG_SUPPORT_SDMA_LS */ + data = RREG32(SOC15_REG_OFFSET(SDMA0, 0, mmSDMA0_POWER_CNTL)); + if (data & SDMA0_POWER_CNTL__MEM_POWER_OVERRIDE_MASK) + *flags |= AMD_CG_SUPPORT_SDMA_LS; +} + const struct amd_ip_funcs sdma_v4_0_ip_funcs = { .name = "sdma_v4_0", .early_init = sdma_v4_0_early_init, @@ -1423,6 +1442,7 @@ const struct amd_ip_funcs sdma_v4_0_ip_funcs = { .soft_reset = sdma_v4_0_soft_reset, .set_clockgating_state = sdma_v4_0_set_clockgating_state, .set_powergating_state = sdma_v4_0_set_powergating_state, + .get_clockgating_state = sdma_v4_0_get_clockgating_state, }; static const struct amdgpu_ring_funcs sdma_v4_0_ring_funcs = {