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Message-ID: <d52ac9f1-616b-427b-8742-781c4f5144d5@bootlin.com>
Date: Mon, 11 Aug 2025 11:46:21 +0200
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Suraj Kandpal <suraj.kandpal@...el.com>, kernel-list@...pberrypi.com,
amd-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
linux-renesas-soc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
freedreno@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
intel-xe@...ts.freedesktop.org, intel-gfx@...ts.freedesktop.org
Cc: ankit.k.nautiyal@...el.com, arun.r.murthy@...el.com,
uma.shankar@...el.com, jani.nikula@...el.com,
dmitry.baryshkov@....qualcomm.com, harry.wentland@....com,
siqueira@...lia.com, alexander.deucher@....com, christian.koenig@....com,
airlied@...il.com, simona@...ll.ch, liviu.dudau@....com,
maarten.lankhorst@...ux.intel.com, mripard@...nel.org,
robin.clark@....qualcomm.com, abhinav.kumar@...ux.dev, tzimmermann@...e.de,
jessica.zhang@....qualcomm.com, sean@...rly.run,
marijn.suijten@...ainline.org, laurent.pinchart+renesas@...asonboard.com,
mcanal@...lia.com, dave.stevenson@...pberrypi.com,
tomi.valkeinen+renesas@...asonboard.com,
kieran.bingham+renesas@...asonboard.com
Subject: Re: [RFC PATCH 7/8] drm/rcar_du: Adapt vkms writeback to new
drm_writeback_connector
I think the commit title is wrong.
Le 11/08/2025 à 11:27, Suraj Kandpal a écrit :
> Now that drm_writeback_connector is embedded with the drm_connector
> adapt the rcar-du writeback functionality to this changes. This
> includes changing the drm_writeback_connector to be changed to drm_connector
> within the rcar_du_crtc.
> Some other changes are done which are a result of the all the above
> changes mentioned.
>
> Signed-off-by: Suraj Kandpal <suraj.kandpal@...el.com>
> ---
> .../gpu/drm/renesas/rcar-du/rcar_du_crtc.h | 4 ++--
> .../drm/renesas/rcar-du/rcar_du_writeback.c | 22 +++++++++++--------
> 2 files changed, 15 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h b/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> index d0f38a8b3561..457c803d75bc 100644
> --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_crtc.h
> @@ -72,11 +72,11 @@ struct rcar_du_crtc {
> const char *const *sources;
> unsigned int sources_count;
>
> - struct drm_writeback_connector writeback;
> + struct drm_connector connector;
> };
>
> #define to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, crtc)
> -#define wb_to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, writeback)
> +#define connector_to_rcar_crtc(c) container_of(c, struct rcar_du_crtc, connector)
>
> /**
> * struct rcar_du_crtc_state - Driver-specific CRTC state
> diff --git a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> index 9986a10e8114..95e6810612c2 100644
> --- a/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> +++ b/drivers/gpu/drm/renesas/rcar-du/rcar_du_writeback.c
> @@ -47,10 +47,12 @@ static int rcar_du_wb_conn_get_modes(struct drm_connector *connector)
> dev->mode_config.max_height);
> }
>
> -static int rcar_du_wb_prepare_job(struct drm_writeback_connector *connector,
> +static int rcar_du_wb_prepare_job(struct drm_writeback_connector *wb_connector,
> struct drm_writeback_job *job)
> {
> - struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(connector);
> + struct drm_connector *connector =
> + container_of(wb_connector, struct drm_connector, writeback);
> + struct rcar_du_crtc *rcrtc = connector_to_rcar_crtc(connector);
> struct rcar_du_wb_job *rjob;
> int ret;
>
> @@ -72,10 +74,12 @@ static int rcar_du_wb_prepare_job(struct drm_writeback_connector *connector,
> return 0;
> }
>
> -static void rcar_du_wb_cleanup_job(struct drm_writeback_connector *connector,
> +static void rcar_du_wb_cleanup_job(struct drm_writeback_connector *wb_connector,
> struct drm_writeback_job *job)
> {
> - struct rcar_du_crtc *rcrtc = wb_to_rcar_crtc(connector);
> + struct drm_connector *connector =
> + container_of(wb_connector, struct drm_connector, writeback);
> + struct rcar_du_crtc *rcrtc = connector_to_rcar_crtc(connector);
> struct rcar_du_wb_job *rjob = job->priv;
>
> if (!job->fb)
> @@ -199,7 +203,7 @@ static const u32 writeback_formats[] = {
> int rcar_du_writeback_init(struct rcar_du_device *rcdu,
> struct rcar_du_crtc *rcrtc)
> {
> - struct drm_writeback_connector *wb_conn = &rcrtc->writeback;
> + struct drm_writeback_connector *wb_conn = &rcrtc->connector.writeback;
>
> struct drm_encoder *encoder;
>
> @@ -212,7 +216,7 @@ int rcar_du_writeback_init(struct rcar_du_device *rcdu,
>
> encoder->possible_crtcs = 1 << drm_crtc_index(&rcrtc->crtc);
>
> - drm_connector_helper_add(&wb_conn->base,
> + drm_connector_helper_add(&rcrtc->connector,
> &rcar_du_wb_conn_helper_funcs);
>
> return drmm_writeback_connector_init(&rcdu->ddev, wb_conn,
> @@ -231,7 +235,7 @@ void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
> struct drm_framebuffer *fb;
> unsigned int i;
>
> - state = rcrtc->writeback.base.state;
> + state = rcrtc->connector.state;
> if (!state || !state->writeback_job)
> return;
>
> @@ -246,10 +250,10 @@ void rcar_du_writeback_setup(struct rcar_du_crtc *rcrtc,
> cfg->mem[i] = sg_dma_address(rjob->sg_tables[i].sgl)
> + fb->offsets[i];
>
> - drm_writeback_queue_job(&rcrtc->writeback, state);
> + drm_writeback_queue_job(&rcrtc->connector.writeback, state);
> }
>
> void rcar_du_writeback_complete(struct rcar_du_crtc *rcrtc)
> {
> - drm_writeback_signal_completion(&rcrtc->writeback, 0);
> + drm_writeback_signal_completion(&rcrtc->connector.writeback, 0);
> }
--
Louis Chauvet, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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