Re: [PATCH 1/2] drm/amd/display: Add visualconfirm module parameter

[Rodrigo Siqueira Jordao <Rodrigo.Siqueira@xxxxxxx>]

On 07/07/2022 10:56, sunpeng.li@xxxxxxx wrote:
> From: Leo Li <sunpeng.li@xxxxxxx>
>
> [Why]
>
> Being able to configure visual confirm at boot or in cmdline is helpful
> when debugging.
>
> [How]
>
> Add a module parameter to configure DC visual confirm, which works the
> same way as the equivalent debugfs entry.
>
> Signed-off-by: Leo Li <sunpeng.li@xxxxxxx>
> ---
>   drivers/gpu/drm/amd/amdgpu/amdgpu.h               | 1 +
>   drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c           | 4 ++++
>   drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 ++
>   3 files changed, 7 insertions(+)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> index 845d6054992a..4629bef6c44e 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
> @@ -197,6 +197,7 @@ extern uint amdgpu_smu_memory_pool_size;
>   extern int amdgpu_smu_pptable_id;
>   extern uint amdgpu_dc_feature_mask;
>   extern uint amdgpu_dc_debug_mask;
> +extern uint amdgpu_dc_visual_confirm;
>   extern uint amdgpu_dm_abm_level;
>   extern int amdgpu_backlight;
>   extern struct amdgpu_mgpu_info mgpu_info;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> index 1cc9260e75de..e1e8cf70e719 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_drv.c
> @@ -167,6 +167,7 @@ int amdgpu_smu_pptable_id = -1;
>    */
>   uint amdgpu_dc_feature_mask = 2;
>   uint amdgpu_dc_debug_mask;
> +uint amdgpu_dc_visual_confirm;
>   int amdgpu_async_gfx_ring = 1;
>   int amdgpu_mcbp;
>   int amdgpu_discovery = -1;
> @@ -827,6 +828,9 @@ module_param_named(dcfeaturemask, amdgpu_dc_feature_mask, uint, 0444);
>   MODULE_PARM_DESC(dcdebugmask, "all debug options disabled (default))");
>   module_param_named(dcdebugmask, amdgpu_dc_debug_mask, uint, 0444);
>   
> +MODULE_PARM_DESC(visualconfirm, "Visual confirm (0 = off (default), 1 = MPO, 5 = PSR)");
> +module_param_named(visualconfirm, amdgpu_dc_visual_confirm, uint, 0444);
> +
>   /**
>    * DOC: abmlevel (uint)
>    * Override the default ABM (Adaptive Backlight Management) level used for DC
> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> index eb5efb4aa2ba..d7208c0b76b1 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -1562,6 +1562,8 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
>   	if (amdgpu_dc_debug_mask & DC_FORCE_SUBVP_MCLK_SWITCH)
>   		adev->dm.dc->debug.force_subvp_mclk_switch = true;
>   
> +	adev->dm.dc->debug.visual_confirm = amdgpu_dc_visual_confirm;
> +
>   	r = dm_dmub_hw_init(adev);
>   	if (r) {
>   		DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);

Series LGTM,

Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>