linux-kernel - Re: [PATCH 01/14] amdgpu: powerplay: Remove unused function

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Date:   Mon, 24 Jul 2017 10:01:47 -0400
From:   Harry Wentland <harry.wentland@....com>
To:     Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>,
        Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Airlie <airlied@...ux.ie>, Rex Zhu <Rex.Zhu@....com>,
        Tom St Denis <tom.stdenis@....com>,
        Eric Huang <JinHuiEric.Huang@....com>,
        Huang Rui <ray.huang@....com>,
        Dan Carpenter <dan.carpenter@...cle.com>,
        Edward O'Callaghan <funfunctor@...klore1984.net>,
        Kees Cook <keescook@...omium.org>,
        "Andrew F. Davis" <afd@...com>,
        Hawking Zhang <Hawking.Zhang@....com>,
        Baoyou Xie <baoyou.xie@...aro.org>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Colin Ian King <colin.king@...onical.com>,
        Nils Wallménius <nils.wallmenius@...il.com>,
        Joe Perches <joe@...ches.com>, amd-gfx@...ts.freedesktop.org,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 01/14] amdgpu: powerplay: Remove unused function

On 2017-07-24 09:35 AM, Ricardo Ribalda Delgado wrote:
> amd_powerplay_display_configuration_change is never called.
> 
> Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@...il.com>
> ---
>  drivers/gpu/drm/amd/powerplay/amd_powerplay.c     | 21 ---------------------
>  drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h |  3 ---
>  2 files changed, 24 deletions(-)
> 
> diff --git a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> index f73e80c4bf33..1ee7aa5546bf 100644
> --- a/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> +++ b/drivers/gpu/drm/amd/powerplay/amd_powerplay.c
> @@ -1237,27 +1237,6 @@ int amd_powerplay_reset(void *handle)
>  	return pem_handle_event(eventmgr, AMD_PP_EVENT_COMPLETE_INIT, &event_data);
>  }
>  
> -/* export this function to DAL */
> -
> -int amd_powerplay_display_configuration_change(void *handle,
> -	const struct amd_pp_display_configuration *display_config)

This is used and needed by the DC display driver. See
display/amdgpu_dm/amdgpu_dm_services.c:193 in Alex's amd-staging-4.11 tree:

https://cgit.freedesktop.org/~agd5f/linux/tree/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_services.c?h=amd-staging-4.11

Harry

> -{
> -	struct pp_hwmgr  *hwmgr;
> -	struct pp_instance *pp_handle = (struct pp_instance *)handle;
> -	int ret = 0;
> -
> -	ret = pp_check(pp_handle);
> -
> -	if (ret != 0)
> -		return ret;
> -
> -	hwmgr = pp_handle->hwmgr;
> -	mutex_lock(&pp_handle->pp_lock);
> -	phm_store_dal_configuration_data(hwmgr, display_config);
> -	mutex_unlock(&pp_handle->pp_lock);
> -	return 0;
> -}
> -
>  int amd_powerplay_get_display_power_level(void *handle,
>  		struct amd_pp_simple_clock_info *output)
>  {
> diff --git a/drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h b/drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h
> index 07e9c0b5915d..ae49af5cc5d1 100644
> --- a/drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h
> +++ b/drivers/gpu/drm/amd/powerplay/inc/amd_powerplay.h
> @@ -407,9 +407,6 @@ int amd_powerplay_destroy(void *handle);
>  
>  int amd_powerplay_reset(void *handle);
>  
> -int amd_powerplay_display_configuration_change(void *handle,
> -		const struct amd_pp_display_configuration *input);
> -
>  int amd_powerplay_get_display_power_level(void *handle,
>  		struct amd_pp_simple_clock_info *output);
>  
>