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| author | Emily Deng <Emily.Deng@amd.com> | 2016-08-08 06:33:11 +0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-08-08 21:04:37 +0300 |
| commit | 83c9b0253b1136b1312fd2a0bfd173f625c65091 (patch) | |
| tree | f876ef61fd5c8728c5328763f13fe4d31c7342b4 /drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | |
| parent | 0bad1619ff5cce53964785a9faedcfb1d4810223 (diff) | |
| download | linux-83c9b0253b1136b1312fd2a0bfd173f625c65091.tar.xz | |
drm/amdgpu: Disable VGA render and crtc when init GMC.
For virtual display feature, when the GPU has DCE engine, need to disable
the VGA render and CRTC, or it will hang when initialize GMC.
Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/dce_v11_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 53 |
1 files changed, 49 insertions, 4 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c index d4bf133908b1..cfadd79d2580 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c @@ -673,6 +673,53 @@ static void dce_v11_0_set_vga_render_state(struct amdgpu_device *adev, WREG32(mmVGA_RENDER_CONTROL, tmp); } +static int dce_v11_0_get_num_crtc (struct amdgpu_device *adev) +{ + int num_crtc = 0; + + switch (adev->asic_type) { + case CHIP_CARRIZO: + num_crtc = 3; + break; + case CHIP_STONEY: + num_crtc = 2; + break; + case CHIP_POLARIS10: + num_crtc = 6; + break; + case CHIP_POLARIS11: + num_crtc = 5; + break; + default: + num_crtc = 0; + } + return num_crtc; +} + +void dce_v11_0_disable_dce(struct amdgpu_device *adev) +{ + /*Disable VGA render and enabled crtc, if has DCE engine*/ + if (amdgpu_atombios_has_dce_engine_info(adev)) { + u32 tmp; + int crtc_enabled, i; + + dce_v11_0_set_vga_render_state(adev, false); + + /*Disable crtc*/ + for (i = 0; i < dce_v11_0_get_num_crtc(adev); i++) { + crtc_enabled = REG_GET_FIELD(RREG32(mmCRTC_CONTROL + crtc_offsets[i]), + CRTC_CONTROL, CRTC_MASTER_EN); + if (crtc_enabled) { + WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 1); + tmp = RREG32(mmCRTC_CONTROL + crtc_offsets[i]); + tmp = REG_SET_FIELD(tmp, CRTC_CONTROL, CRTC_MASTER_EN, 0); + WREG32(mmCRTC_CONTROL + crtc_offsets[i], tmp); + WREG32(mmCRTC_UPDATE_LOCK + crtc_offsets[i], 0); + } + } + } +} + static void dce_v11_0_program_fmt(struct drm_encoder *encoder) { struct drm_device *dev = encoder->dev; @@ -2999,24 +3046,22 @@ static int dce_v11_0_early_init(void *handle) dce_v11_0_set_display_funcs(adev); dce_v11_0_set_irq_funcs(adev); + adev->mode_info.num_crtc = dce_v11_0_get_num_crtc(adev); + switch (adev->asic_type) { case CHIP_CARRIZO: - adev->mode_info.num_crtc = 3; adev->mode_info.num_hpd = 6; adev->mode_info.num_dig = 9; break; case CHIP_STONEY: - adev->mode_info.num_crtc = 2; adev->mode_info.num_hpd = 6; adev->mode_info.num_dig = 9; break; case CHIP_POLARIS10: - adev->mode_info.num_crtc = 6; adev->mode_info.num_hpd = 6; adev->mode_info.num_dig = 6; break; case CHIP_POLARIS11: - adev->mode_info.num_crtc = 5; adev->mode_info.num_hpd = 5; adev->mode_info.num_dig = 5; break; |