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Date: Thu, 1 Feb 2024 18:43:34 +0100
From: Louis Chauvet <louis.chauvet@bootlin.com>
To: Arthur Grillo <arthurgrillo@riseup.net>
Cc: Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@gmail.com>,
	Haneen Mohammed <hamohammed.sa@gmail.com>,
	Harry Wentland <harry.wentland@amd.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	=?iso-8859-1?Q?Ma=EDra?= Canal <mairacanal@riseup.net>,
	Melissa Wen <melissa.srw@gmail.com>,
	Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linux-doc@vger.kernel.org
Subject: Re: [PATCH v2 1/7] drm/vkms: Use drm_frame directly
Message-ID: <ZbvYRss3UuSlCSdW@localhost.localdomain>
Mail-Followup-To: Arthur Grillo <arthurgrillo@riseup.net>,
	Daniel Vetter <daniel@ffwll.ch>, David Airlie <airlied@gmail.com>,
	Haneen Mohammed <hamohammed.sa@gmail.com>,
	Harry Wentland <harry.wentland@amd.com>,
	Jonathan Corbet <corbet@lwn.net>,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <mripard@kernel.org>,
	=?iso-8859-1?Q?Ma=EDra?= Canal <mairacanal@riseup.net>,
	Melissa Wen <melissa.srw@gmail.com>,
	Rodrigo Siqueira <rodrigosiqueiramelo@gmail.com>,
	Thomas Zimmermann <tzimmermann@suse.de>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	linux-doc@vger.kernel.org
References: <20240110-vkms-yuv-v2-0-952fcaa5a193@riseup.net>
 <20240110-vkms-yuv-v2-1-952fcaa5a193@riseup.net>
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In-Reply-To: <20240110-vkms-yuv-v2-1-952fcaa5a193@riseup.net>

Le 10/01/24 - 14:44, Arthur Grillo a ?crit :
> Remove intermidiary variables and access the variables directly from
> drm_frame. These changes should be noop.
> 
> Signed-off-by: Arthur Grillo <arthurgrillo@riseup.net>
> ---
>  drivers/gpu/drm/vkms/vkms_drv.h       |  3 ---
>  drivers/gpu/drm/vkms/vkms_formats.c   | 12 +++++++-----
>  drivers/gpu/drm/vkms/vkms_plane.c     |  3 ---
>  drivers/gpu/drm/vkms/vkms_writeback.c |  5 -----
>  4 files changed, 7 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
> index 8f5710debb1e..b4b357447292 100644
> --- a/drivers/gpu/drm/vkms/vkms_drv.h
> +++ b/drivers/gpu/drm/vkms/vkms_drv.h
> @@ -31,9 +31,6 @@ struct vkms_frame_info {
>  	struct drm_rect rotated;
>  	struct iosys_map map[DRM_FORMAT_MAX_PLANES];
>  	unsigned int rotation;
> -	unsigned int offset;
> -	unsigned int pitch;
> -	unsigned int cpp;
>  };
>  
>  struct pixel_argb_u16 {
> diff --git a/drivers/gpu/drm/vkms/vkms_formats.c b/drivers/gpu/drm/vkms/vkms_formats.c
> index 36046b12f296..172830a3936a 100644
> --- a/drivers/gpu/drm/vkms/vkms_formats.c
> +++ b/drivers/gpu/drm/vkms/vkms_formats.c
> @@ -11,8 +11,10 @@
>  
>  static size_t pixel_offset(const struct vkms_frame_info *frame_info, int x, int y)
>  {
> -	return frame_info->offset + (y * frame_info->pitch)
> -				  + (x * frame_info->cpp);
> +	struct drm_framebuffer *fb = frame_info->fb;
> +
> +	return fb->offsets[0] + (y * fb->pitches[0])
> +			      + (x * fb->format->cpp[0]);
>  }
>  
>  /*
> @@ -131,12 +133,12 @@ void vkms_compose_row(struct line_buffer *stage_buffer, struct vkms_plane_state
>  	u8 *src_pixels = get_packed_src_addr(frame_info, y);
>  	int limit = min_t(size_t, drm_rect_width(&frame_info->dst), stage_buffer->n_pixels);
>  
> -	for (size_t x = 0; x < limit; x++, src_pixels += frame_info->cpp) {
> +	for (size_t x = 0; x < limit; x++, src_pixels += frame_info->fb->format->cpp[0]) {
>  		int x_pos = get_x_position(frame_info, limit, x);
>  
>  		if (drm_rotation_90_or_270(frame_info->rotation))
>  			src_pixels = get_packed_src_addr(frame_info, x + frame_info->rotated.y1)
> -				+ frame_info->cpp * y;
> +				+ frame_info->fb->format->cpp[0] * y;
>  
>  		plane->pixel_read(src_pixels, &out_pixels[x_pos]);
>  	}
> @@ -223,7 +225,7 @@ void vkms_writeback_row(struct vkms_writeback_job *wb,
>  	struct pixel_argb_u16 *in_pixels = src_buffer->pixels;
>  	int x_limit = min_t(size_t, drm_rect_width(&frame_info->dst), src_buffer->n_pixels);
>  
> -	for (size_t x = 0; x < x_limit; x++, dst_pixels += frame_info->cpp)
> +	for (size_t x = 0; x < x_limit; x++, dst_pixels += frame_info->fb->format->cpp[0])
>  		wb->pixel_write(dst_pixels, &in_pixels[x]);
>  }
>  
> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c
> index e5c625ab8e3e..8f2c6ea419a3 100644
> --- a/drivers/gpu/drm/vkms/vkms_plane.c
> +++ b/drivers/gpu/drm/vkms/vkms_plane.c
> @@ -125,9 +125,6 @@ static void vkms_plane_atomic_update(struct drm_plane *plane,
>  	drm_rect_rotate(&frame_info->rotated, drm_rect_width(&frame_info->rotated),
>  			drm_rect_height(&frame_info->rotated), frame_info->rotation);
>  
> -	frame_info->offset = fb->offsets[0];
> -	frame_info->pitch = fb->pitches[0];
> -	frame_info->cpp = fb->format->cpp[0];
>  	vkms_plane_state->pixel_read = get_pixel_conversion_function(fmt);
>  }
>  
> diff --git a/drivers/gpu/drm/vkms/vkms_writeback.c b/drivers/gpu/drm/vkms/vkms_writeback.c
> index bc724cbd5e3a..c8582df1f739 100644
> --- a/drivers/gpu/drm/vkms/vkms_writeback.c
> +++ b/drivers/gpu/drm/vkms/vkms_writeback.c
> @@ -149,11 +149,6 @@ static void vkms_wb_atomic_commit(struct drm_connector *conn,
>  	crtc_state->active_writeback = active_wb;
>  	crtc_state->wb_pending = true;
>  	spin_unlock_irq(&output->composer_lock);
> -
> -	wb_frame_info->offset = fb->offsets[0];
> -	wb_frame_info->pitch = fb->pitches[0];
> -	wb_frame_info->cpp = fb->format->cpp[0];
> -
>  	drm_writeback_queue_job(wb_conn, connector_state);
>  	active_wb->pixel_write = get_pixel_write_function(wb_format);
>  	drm_rect_init(&wb_frame_info->src, 0, 0, crtc_width, crtc_height);
> 
> -- 
> 2.43.0
> 

Reviewed-by: Louis Chauvet <louis.chauvet@bootlin.com>