diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2015-10-15 07:24:49 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2016-05-05 02:23:53 +0200 |
| commit | 541cd55557a669b8cebcfd4e1393adde645b5890 (patch) | |
| tree | 4f4ccf3334633078167d7a3d178baa52303c4237 /drivers/gpu/drm/amd/amdgpu/atombios_crtc.c | |
| parent | drm/amdgpu: update atombios.h (v2) (diff) | |
| download | linux-541cd55557a669b8cebcfd4e1393adde645b5890.tar.xz linux-541cd55557a669b8cebcfd4e1393adde645b5890.zip | |
drm/amdgpu/atom: add SetDCEClock helper
New cmd table for ELM/BAF for setting the dispclock or
dprefclock.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atombios_crtc.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atombios_crtc.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c b/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c index 49aa35016653..bd6c530bdf7e 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_crtc.c @@ -467,7 +467,7 @@ union set_pixel_clock { * required disp clk. */ void amdgpu_atombios_crtc_set_disp_eng_pll(struct amdgpu_device *adev, - u32 dispclk) + u32 dispclk) { u8 frev, crev; int index; @@ -510,6 +510,49 @@ void amdgpu_atombios_crtc_set_disp_eng_pll(struct amdgpu_device *adev, amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args); } +union set_dce_clock { + SET_DCE_CLOCK_PS_ALLOCATION_V1_1 v1_1; + SET_DCE_CLOCK_PS_ALLOCATION_V2_1 v2_1; +}; + +u32 amdgpu_atombios_crtc_set_dce_clock(struct amdgpu_device *adev, + u32 freq, u8 clk_type, u8 clk_src) +{ + u8 frev, crev; + int index; + union set_dce_clock args; + u32 ret_freq = 0; + + memset(&args, 0, sizeof(args)); + + index = GetIndexIntoMasterTable(COMMAND, SetDCEClock); + if (!amdgpu_atom_parse_cmd_header(adev->mode_info.atom_context, index, &frev, + &crev)) + return 0; + + switch (frev) { + case 2: + switch (crev) { + case 1: + args.v2_1.asParam.ulDCEClkFreq = cpu_to_le32(freq); /* 10kHz units */ + args.v2_1.asParam.ucDCEClkType = clk_type; + args.v2_1.asParam.ucDCEClkSrc = clk_src; + amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args); + ret_freq = le32_to_cpu(args.v2_1.asParam.ulDCEClkFreq) * 10; + break; + default: + DRM_ERROR("Unknown table version %d %d\n", frev, crev); + return 0; + } + break; + default: + DRM_ERROR("Unknown table version %d %d\n", frev, crev); + return 0; + } + + return ret_freq; +} + static bool is_pixel_clock_source_from_pll(u32 encoder_mode, int pll_id) { if (ENCODER_MODE_IS_DP(encoder_mode)) { |