[1/8] drm/plane-helper: Move drm_plane_helper_atomic_check() into udl

[Thomas Zimmermann]

Hi

Am 01.12.23 um 03:36 schrieb Sui Jingfeng:
> Hi,
> 
> 
> On 2023/11/28 18:45, Thomas Zimmermann wrote:
>> The udl driver is the only caller of drm_plane_helper_atomic_check().
>> Move the function into the driver. No functional changes.
>>
>> Signed-off-by: Thomas Zimmermann <tzimmermann at suse.de>
>> ---
>>   drivers/gpu/drm/drm_plane_helper.c | 32 ------------------------------
>>   drivers/gpu/drm/udl/udl_modeset.c  | 19 ++++++++++++++++--
>>   include/drm/drm_plane_helper.h     |  2 --
>>   3 files changed, 17 insertions(+), 36 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_plane_helper.c 
>> b/drivers/gpu/drm/drm_plane_helper.c
>> index 5e95089676ff8..7982be4b0306d 100644
>> --- a/drivers/gpu/drm/drm_plane_helper.c
>> +++ b/drivers/gpu/drm/drm_plane_helper.c
>> @@ -279,35 +279,3 @@ void drm_plane_helper_destroy(struct drm_plane 
>> *plane)
>>       kfree(plane);
>>   }
>>   EXPORT_SYMBOL(drm_plane_helper_destroy);
>> -
>> -/**
>> - * drm_plane_helper_atomic_check() - Helper to check plane atomic-state
>> - * @plane: plane to check
>> - * @state: atomic state object
>> - *
>> - * Provides a default plane-state check handler for planes whose 
>> atomic-state
>> - * scale and positioning are not expected to change since the plane 
>> is always
>> - * a fullscreen scanout buffer.
>> - *
>> - * This is often the case for the primary plane of simple 
>> framebuffers. See
>> - * also drm_crtc_helper_atomic_check() for the respective CRTC-state 
>> check
>> - * helper function.
>> - *
>> - * RETURNS:
>> - * Zero on success, or an errno code otherwise.
>> - */
>> -int drm_plane_helper_atomic_check(struct drm_plane *plane, struct 
>> drm_atomic_state *state)
>> -{
>> -    struct drm_plane_state *new_plane_state = 
>> drm_atomic_get_new_plane_state(state, plane);
>> -    struct drm_crtc *new_crtc = new_plane_state->crtc;
>> -    struct drm_crtc_state *new_crtc_state = NULL;
>> -
>> -    if (new_crtc)
>> -        new_crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc);
>> -
>> -    return drm_atomic_helper_check_plane_state(new_plane_state, 
>> new_crtc_state,
>> -                           DRM_PLANE_NO_SCALING,
>> -                           DRM_PLANE_NO_SCALING,
>> -                           false, false);
>> -}
>> -EXPORT_SYMBOL(drm_plane_helper_atomic_check);
> 
> 
> Since this function is removed, does the comments of the 
> drm_crtc_helper_atomic_check()
> function (in the drm_crtc_helper.c) need to update as well? I'm ask 
> because I see the
> comments of the drm_crtc_helper_atomic_check() still referencing this 
> function.

Good point. I'll update that comment. Thanks for reviewing.

Best regards
Thomas

> 
> 
>> diff --git a/drivers/gpu/drm/udl/udl_modeset.c 
>> b/drivers/gpu/drm/udl/udl_modeset.c
>> index 40876bcdd79a4..7702359c90c22 100644
>> --- a/drivers/gpu/drm/udl/udl_modeset.c
>> +++ b/drivers/gpu/drm/udl/udl_modeset.c
>> @@ -21,7 +21,6 @@
>>   #include <drm/drm_gem_framebuffer_helper.h>
>>   #include <drm/drm_gem_shmem_helper.h>
>>   #include <drm/drm_modeset_helper_vtables.h>
>> -#include <drm/drm_plane_helper.h>
>>   #include <drm/drm_probe_helper.h>
>>   #include <drm/drm_vblank.h>
>> @@ -261,6 +260,22 @@ static const uint64_t udl_primary_plane_fmtmods[] 
>> = {
>>       DRM_FORMAT_MOD_INVALID
>>   };
>> +static int udl_primary_plane_helper_atomic_check(struct drm_plane 
>> *plane,
>> +                         struct drm_atomic_state *state)
>> +{
>> +    struct drm_plane_state *new_plane_state = 
>> drm_atomic_get_new_plane_state(state, plane);
>> +    struct drm_crtc *new_crtc = new_plane_state->crtc;
>> +    struct drm_crtc_state *new_crtc_state = NULL;
>> +
>> +    if (new_crtc)
>> +        new_crtc_state = drm_atomic_get_new_crtc_state(state, new_crtc);
>> +
>> +    return drm_atomic_helper_check_plane_state(new_plane_state, 
>> new_crtc_state,
>> +                           DRM_PLANE_NO_SCALING,
>> +                           DRM_PLANE_NO_SCALING,
>> +                           false, false);
>> +}
>> +
>>   static void udl_primary_plane_helper_atomic_update(struct drm_plane 
>> *plane,
>>                              struct drm_atomic_state *state)
>>   {
>> @@ -296,7 +311,7 @@ static void 
>> udl_primary_plane_helper_atomic_update(struct drm_plane *plane,
>>   static const struct drm_plane_helper_funcs 
>> udl_primary_plane_helper_funcs = {
>>       DRM_GEM_SHADOW_PLANE_HELPER_FUNCS,
>> -    .atomic_check = drm_plane_helper_atomic_check,
>> +    .atomic_check = udl_primary_plane_helper_atomic_check,
>>       .atomic_update = udl_primary_plane_helper_atomic_update,
>>   };
>> diff --git a/include/drm/drm_plane_helper.h 
>> b/include/drm/drm_plane_helper.h
>> index 3a574e8cd22f4..75f9c4830564a 100644
>> --- a/include/drm/drm_plane_helper.h
>> +++ b/include/drm/drm_plane_helper.h
>> @@ -26,7 +26,6 @@
>>   #include <linux/types.h>
>> -struct drm_atomic_state;
>>   struct drm_crtc;
>>   struct drm_framebuffer;
>>   struct drm_modeset_acquire_ctx;
>> @@ -42,7 +41,6 @@ int drm_plane_helper_update_primary(struct drm_plane 
>> *plane, struct drm_crtc *cr
>>   int drm_plane_helper_disable_primary(struct drm_plane *plane,
>>                        struct drm_modeset_acquire_ctx *ctx);
>>   void drm_plane_helper_destroy(struct drm_plane *plane);
>> -int drm_plane_helper_atomic_check(struct drm_plane *plane, struct 
>> drm_atomic_state *state);
>>   /**
>>    * DRM_PLANE_NON_ATOMIC_FUNCS - Default plane functions for 
>> non-atomic drivers

-- 
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Frankenstrasse 146, 90461 Nuernberg, Germany
GF: Ivo Totev, Andrew Myers, Andrew McDonald, Boudien Moerman
HRB 36809 (AG Nuernberg)
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