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| author | Rex Zhu <Rex.Zhu@amd.com> | 2015-09-17 16:34:14 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2015-12-21 16:42:07 -0500 |
| commit | 47bf18b5b257d5a385b7d447a29f97301f5b2282 (patch) | |
| tree | d2e32e7509ea7e44ce4dfe77c154e2fc29070c02 /drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | |
| parent | 5e6186991a75ea192d7dd88b9d3f7e166eaae801 (diff) | |
| download | linux-47bf18b5b257d5a385b7d447a29f97301f5b2282.tar.gz linux-47bf18b5b257d5a385b7d447a29f97301f5b2282.tar.bz2 linux-47bf18b5b257d5a385b7d447a29f97301f5b2282.zip | |
drm/amdgpu: add new cgs interface to get display info (v2)
Add new CGS interfaces to query display info across modules.
This is nedded by the powerplay module for synchronizing with
the display module.
v2: (agd): fold in refresh rate fix, rebase
Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c index 19f46d0b6ca7..8f758eaeef9f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cgs.c @@ -758,6 +758,45 @@ static int amdgpu_cgs_query_system_info(void *cgs_device, return 0; } +static int amdgpu_cgs_get_active_displays_info(void *cgs_device, + struct cgs_display_info *info) +{ + CGS_FUNC_ADEV; + struct amdgpu_crtc *amdgpu_crtc; + struct drm_device *ddev = adev->ddev; + struct drm_crtc *crtc; + uint32_t line_time_us, vblank_lines; + + if (info == NULL) + return -EINVAL; + + if (adev->mode_info.num_crtc && adev->mode_info.mode_config_initialized) { + list_for_each_entry(crtc, + &ddev->mode_config.crtc_list, head) { + amdgpu_crtc = to_amdgpu_crtc(crtc); + if (crtc->enabled) { + info->active_display_mask |= (1 << amdgpu_crtc->crtc_id); + info->display_count++; + } + if (info->mode_info != NULL && + crtc->enabled && amdgpu_crtc->enabled && + amdgpu_crtc->hw_mode.clock) { + line_time_us = (amdgpu_crtc->hw_mode.crtc_htotal * 1000) / + amdgpu_crtc->hw_mode.clock; + vblank_lines = amdgpu_crtc->hw_mode.crtc_vblank_end - + amdgpu_crtc->hw_mode.crtc_vdisplay + + (amdgpu_crtc->v_border * 2); + info->mode_info->vblank_time_us = vblank_lines * line_time_us; + info->mode_info->refresh_rate = drm_mode_vrefresh(&amdgpu_crtc->hw_mode); + info->mode_info->ref_clock = adev->clock.spll.reference_freq; + info->mode_info++; + } + } + } + + return 0; +} + /** \brief evaluate acpi namespace object, handle or pathname must be valid * \param cgs_device * \param info input/output arguments for the control method @@ -1006,6 +1045,7 @@ static const struct cgs_ops amdgpu_cgs_ops = { amdgpu_cgs_get_firmware_info, amdgpu_cgs_set_powergating_state, amdgpu_cgs_set_clockgating_state, + amdgpu_cgs_get_active_displays_info, amdgpu_cgs_call_acpi_method, amdgpu_cgs_query_system_info, }; |