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Mon, 25 Apr 2022 17:20:06 -0700 (PDT) Received: from [192.168.1.211] ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id n10-20020a196f4a000000b0047209a58a56sm483726lfk.104.2022.04.25.17.20.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 25 Apr 2022 17:20:06 -0700 (PDT) Message-ID: <9aaf3335-158d-71f9-32f4-426debba96e8@linaro.org> Date: Tue, 26 Apr 2022 03:20:05 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.8.0 Subject: Re: [PATCH v5 14/19] drm/msm/dpu: add the writeback connector layer Content-Language: en-GB To: Abhinav Kumar , freedreno@lists.freedesktop.org References: <1650846730-19226-1-git-send-email-quic_abhinavk@quicinc.com> <1650846730-19226-15-git-send-email-quic_abhinavk@quicinc.com> From: Dmitry Baryshkov In-Reply-To: <1650846730-19226-15-git-send-email-quic_abhinavk@quicinc.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: markyacoub@chromium.org, liviu.dudau@arm.com, dri-devel@lists.freedesktop.org, swboyd@chromium.org, seanpaul@chromium.org, laurent.pinchart@ideasonboard.com, quic_jesszhan@quicinc.com, quic_aravindh@quicinc.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 25/04/2022 03:32, Abhinav Kumar wrote: > Introduce the dpu_writeback module which serves as the > interface between dpu operations and the drm_writeback. > > This module manages the connector related operations for > dpu writeback. > > changes in v2: > - start using drm_writeback_connector_init_with_encoder() > - drop unnecessary arguments from dpu_writeback_init() > - rebase on msm-next tip and remove usage of priv->connectors > > changes in v3: > - none > > changes in v4: > - none > > changes in v5: > - store the drm_enc in the dpu_wb_conn to be used while > using dpu_encoder APIs > > Signed-off-by: Abhinav Kumar Reviewed-by: Dmitry Baryshkov > --- > drivers/gpu/drm/msm/Makefile | 1 + > drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c | 76 +++++++++++++++++++++++++++ > drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h | 31 +++++++++++ > 3 files changed, 108 insertions(+) > create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c > create mode 100644 drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h > > diff --git a/drivers/gpu/drm/msm/Makefile b/drivers/gpu/drm/msm/Makefile > index 0387f22..66395ee 100644 > --- a/drivers/gpu/drm/msm/Makefile > +++ b/drivers/gpu/drm/msm/Makefile > @@ -80,6 +80,7 @@ msm-$(CONFIG_DRM_MSM_DPU) += \ > disp/dpu1/dpu_plane.o \ > disp/dpu1/dpu_rm.o \ > disp/dpu1/dpu_vbif.o \ > + disp/dpu1/dpu_writeback.o > > msm-$(CONFIG_DRM_MSM_MDSS) += \ > msm_mdss.o \ > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c > new file mode 100644 > index 0000000..7620ffe > --- /dev/null > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.c > @@ -0,0 +1,76 @@ > +// SPDX-License-Identifier: GPL-2.0-only > +/* > + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. > + */ > + > +#include "dpu_writeback.h" > + > +static int dpu_wb_conn_get_modes(struct drm_connector *connector) > +{ > + struct drm_device *dev = connector->dev; > + > + return drm_add_modes_noedid(connector, dev->mode_config.max_width, > + dev->mode_config.max_height); > +} > + > +static const struct drm_connector_funcs dpu_wb_conn_funcs = { > + .reset = drm_atomic_helper_connector_reset, > + .fill_modes = drm_helper_probe_single_connector_modes, > + .destroy = drm_connector_cleanup, > + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, > + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, > +}; > + > +static int dpu_wb_conn_prepare_job(struct drm_writeback_connector *connector, > + struct drm_writeback_job *job) > +{ > + > + struct dpu_wb_connector *dpu_wb_conn = to_dpu_wb_conn(connector); > + > + if (!job->fb) > + return 0; > + > + dpu_encoder_prepare_wb_job(dpu_wb_conn->wb_enc, job); > + > + return 0; > +} > + > +static void dpu_wb_conn_cleanup_job(struct drm_writeback_connector *connector, > + struct drm_writeback_job *job) > +{ > + struct dpu_wb_connector *dpu_wb_conn = to_dpu_wb_conn(connector); > + > + if (!job->fb) > + return; > + > + dpu_encoder_cleanup_wb_job(dpu_wb_conn->wb_enc, job); > +} > + > +static const struct drm_connector_helper_funcs dpu_wb_conn_helper_funcs = { > + .get_modes = dpu_wb_conn_get_modes, > + .prepare_writeback_job = dpu_wb_conn_prepare_job, > + .cleanup_writeback_job = dpu_wb_conn_cleanup_job, > +}; > + > +int dpu_writeback_init(struct drm_device *dev, struct drm_encoder *enc, > + const u32 *format_list, u32 num_formats) > +{ > + struct dpu_wb_connector *dpu_wb_conn; > + int rc = 0; > + > + dpu_wb_conn = devm_kzalloc(dev->dev, sizeof(*dpu_wb_conn), GFP_KERNEL); > + > + drm_connector_helper_add(&dpu_wb_conn->base.base, &dpu_wb_conn_helper_funcs); > + > + /* DPU initializes the encoder and sets it up completely for writeback > + * cases and hence should use the new API drm_writeback_connector_init_with_encoder > + * to initialize the writeback connector > + */ > + rc = drm_writeback_connector_init_with_encoder(dev, &dpu_wb_conn->base, enc, > + &dpu_wb_conn_funcs, format_list, num_formats); > + > + if (!rc) > + dpu_wb_conn->wb_enc = enc; > + > + return rc; > +} > diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h > new file mode 100644 > index 0000000..5a75ea9 > --- /dev/null > +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_writeback.h > @@ -0,0 +1,31 @@ > +/* SPDX-License-Identifier: GPL-2.0-only */ > +/* > + * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved. > + */ > + > +#ifndef _DPU_WRITEBACK_H > +#define _DPU_WRITEBACK_H > + > +#include > +#include > +#include > +#include > + > +#include "msm_drv.h" > +#include "dpu_kms.h" > +#include "dpu_encoder_phys.h" > + > +struct dpu_wb_connector { > + struct drm_writeback_connector base; > + struct drm_encoder *wb_enc; > +}; > + > +static inline struct dpu_wb_connector *to_dpu_wb_conn(struct drm_writeback_connector *conn) > +{ > + return container_of(conn, struct dpu_wb_connector, base); > +} > + > +int dpu_writeback_init(struct drm_device *dev, struct drm_encoder *enc, > + const u32 *format_list, u32 num_formats); > + > +#endif /*_DPU_WRITEBACK_H */ -- With best wishes Dmitry