From 610f467a3cb02ca34ce48bb8d6cc3f2409571f93 Mon Sep 17 00:00:00 2001
From: Sylwester Nawrocki <s.nawrocki@samsung.com>
Date: Mon, 14 May 2012 23:15:21 +0200
Subject: [PATCH 2/2] s5p-fimc: Use v4l2_subdev internal ops to register video nodes
In order to be able to select only FIMC-LITE support, which is added
with subsequent patches, the regular FIMC support is now contained
only in fimc-core.c, fimc-m2m.c and fimc-capture.c files. The graph
and pipeline management is now solely handled in fimc-mdevice.[ch].
This means the FIMC driver can now be excluded with Kconfig option,
leaving only FIMC-LITE and allowing this driver to be reused in SoCs
that have only FIMC-LITE and no regular FIMC IP.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
---
drivers/media/video/s5p-fimc/fimc-capture.c | 142 +++++++++++++++------------
drivers/media/video/s5p-fimc/fimc-core.c | 13 ++-
drivers/media/video/s5p-fimc/fimc-core.h | 7 +-
drivers/media/video/s5p-fimc/fimc-m2m.c | 18 +++-
drivers/media/video/s5p-fimc/fimc-mdevice.c | 89 +++++++----------
drivers/media/video/s5p-fimc/fimc-mdevice.h | 1 +
6 files changed, 139 insertions(+), 131 deletions(-)
@@ -993,7 +993,7 @@ static int fimc_pipeline_validate(struct fimc_dev *fimc)
if (!(pad->flags & MEDIA_PAD_FL_SINK))
break;
/* Don't call FIMC subdev operation to avoid nested locking */
- if (sd == fimc->vid_cap.subdev) {
+ if (sd == &fimc->vid_cap.subdev) {
struct fimc_frame *ff = &vid_cap->ctx->s_frame;
sink_fmt.format.width = ff->f_width;
sink_fmt.format.height = ff->f_height;
@@ -1489,53 +1489,6 @@ static struct v4l2_subdev_ops fimc_subdev_ops = {
.pad = &fimc_subdev_pad_ops,
};
-static int fimc_create_capture_subdev(struct fimc_dev *fimc,
- struct v4l2_device *v4l2_dev)
-{
- struct v4l2_subdev *sd;
- int ret;
-
- sd = kzalloc(sizeof(*sd), GFP_KERNEL);
- if (!sd)
- return -ENOMEM;
-
- v4l2_subdev_init(sd, &fimc_subdev_ops);
- sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
- snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
-
- fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
- fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
- ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
- fimc->vid_cap.sd_pads, 0);
- if (ret)
- goto me_err;
- ret = v4l2_device_register_subdev(v4l2_dev, sd);
- if (ret)
- goto sd_err;
-
- fimc->vid_cap.subdev = sd;
- v4l2_set_subdevdata(sd, fimc);
- sd->entity.ops = &fimc_sd_media_ops;
- return 0;
-sd_err:
- media_entity_cleanup(&sd->entity);
-me_err:
- kfree(sd);
- return ret;
-}
-
-static void fimc_destroy_capture_subdev(struct fimc_dev *fimc)
-{
- struct v4l2_subdev *sd = fimc->vid_cap.subdev;
-
- if (!sd)
- return;
- media_entity_cleanup(&sd->entity);
- v4l2_device_unregister_subdev(sd);
- kfree(sd);
- fimc->vid_cap.subdev = NULL;
-}
-
/* Set default format at the sensor and host interface */
static int fimc_capture_set_default_format(struct fimc_dev *fimc)
{
@@ -1554,7 +1507,7 @@ static int fimc_capture_set_default_format(struct fimc_dev *fimc)
}
/* fimc->lock must be already initialized */
-int fimc_register_capture_device(struct fimc_dev *fimc,
+static int fimc_register_capture_device(struct fimc_dev *fimc,
struct v4l2_device *v4l2_dev)
{
struct video_device *vfd;
@@ -1572,7 +1525,7 @@ int fimc_register_capture_device(struct fimc_dev *fimc,
ctx->out_path = FIMC_DMA;
ctx->state = FIMC_CTX_CAP;
ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
- ctx->d_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0);
+ ctx->d_frame.fmt = ctx->s_frame.fmt;
vfd = video_device_alloc();
if (!vfd) {
@@ -1580,8 +1533,7 @@ int fimc_register_capture_device(struct fimc_dev *fimc,
goto err_vd_alloc;
}
- snprintf(vfd->name, sizeof(vfd->name), "%s.capture",
- dev_name(&fimc->pdev->dev));
+ snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id);
vfd->fops = &fimc_capture_fops;
vfd->ioctl_ops = &fimc_capture_ioctl_ops;
@@ -1616,18 +1568,22 @@ int fimc_register_capture_device(struct fimc_dev *fimc,
vb2_queue_init(q);
- fimc->vid_cap.vd_pad.flags = MEDIA_PAD_FL_SINK;
- ret = media_entity_init(&vfd->entity, 1, &fimc->vid_cap.vd_pad, 0);
+ vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK;
+ ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0);
if (ret)
goto err_ent;
- ret = fimc_create_capture_subdev(fimc, v4l2_dev);
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
if (ret)
- goto err_sd_reg;
+ goto err_vd;
+
+ v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
+ vfd->name, video_device_node_name(vfd));
vfd->ctrl_handler = &ctx->ctrl_handler;
return 0;
-err_sd_reg:
+err_vd:
media_entity_cleanup(&vfd->entity);
err_ent:
video_device_release(vfd);
@@ -1636,17 +1592,73 @@ err_vd_alloc:
return ret;
}
-void fimc_unregister_capture_device(struct fimc_dev *fimc)
+static int fimc_capture_subdev_registered(struct v4l2_subdev *sd)
{
- struct video_device *vfd = fimc->vid_cap.vfd;
+ struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
+ int ret;
- if (vfd) {
- media_entity_cleanup(&vfd->entity);
- /* Can also be called if video device was
- not registered */
- video_unregister_device(vfd);
+ ret = fimc_register_m2m_device(fimc, sd->v4l2_dev);
+ if (ret)
+ return ret;
+
+ ret = fimc_register_capture_device(fimc, sd->v4l2_dev);
+ if (ret)
+ fimc_unregister_m2m_device(fimc);
+
+ return ret;
+}
+
+static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd)
+{
+ struct fimc_dev *fimc = v4l2_get_subdevdata(sd);
+
+ if (fimc == NULL)
+ return;
+
+ fimc_unregister_m2m_device(fimc);
+
+ if (fimc->vid_cap.vfd) {
+ media_entity_cleanup(&fimc->vid_cap.vfd->entity);
+ video_unregister_device(fimc->vid_cap.vfd);
+ fimc->vid_cap.vfd = NULL;
}
- fimc_destroy_capture_subdev(fimc);
+
kfree(fimc->vid_cap.ctx);
fimc->vid_cap.ctx = NULL;
}
+
+static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = {
+ .registered = fimc_capture_subdev_registered,
+ .unregistered = fimc_capture_subdev_unregistered,
+};
+
+int fimc_initialize_capture_subdev(struct fimc_dev *fimc)
+{
+ struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
+ int ret;
+
+ v4l2_subdev_init(sd, &fimc_subdev_ops);
+ sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
+ snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id);
+
+ fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+ ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM,
+ fimc->vid_cap.sd_pads, 0);
+ if (ret)
+ return ret;
+
+ sd->entity.ops = &fimc_sd_media_ops;
+ sd->internal_ops = &fimc_capture_sd_internal_ops;
+ v4l2_set_subdevdata(sd, fimc);
+ return 0;
+}
+
+void fimc_unregister_capture_subdev(struct fimc_dev *fimc)
+{
+ struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
+
+ v4l2_device_unregister_subdev(sd);
+ media_entity_cleanup(&sd->entity);
+ v4l2_set_subdevdata(sd, NULL);
+}
@@ -842,8 +842,6 @@ static int fimc_probe(struct platform_device *pdev)
clk_set_rate(fimc->clock[CLK_BUS], drv_data->lclk_frequency);
clk_enable(fimc->clock[CLK_BUS]);
- platform_set_drvdata(pdev, fimc);
-
ret = devm_request_irq(&pdev->dev, res->start, fimc_irq_handler,
0, pdev->name, fimc);
if (ret) {
@@ -851,10 +849,15 @@ static int fimc_probe(struct platform_device *pdev)
goto err_clk;
}
+ ret = fimc_initialize_capture_subdev(fimc);
+ if (ret)
+ goto err_clk;
+
+ platform_set_drvdata(pdev, fimc);
pm_runtime_enable(&pdev->dev);
ret = pm_runtime_get_sync(&pdev->dev);
if (ret < 0)
- goto err_clk;
+ goto err_sd;
/* Initialize contiguous memory allocator */
fimc->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev);
if (IS_ERR(fimc->alloc_ctx)) {
@@ -866,9 +869,10 @@ static int fimc_probe(struct platform_device *pdev)
pm_runtime_put(&pdev->dev);
return 0;
-
err_pm:
pm_runtime_put(&pdev->dev);
+err_sd:
+ fimc_unregister_capture_subdev(fimc);
err_clk:
fimc_clk_put(fimc);
return ret;
@@ -953,6 +957,7 @@ static int __devexit fimc_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
pm_runtime_set_suspended(&pdev->dev);
+ fimc_unregister_capture_subdev(fimc);
vb2_dma_contig_cleanup_ctx(fimc->alloc_ctx);
clk_disable(fimc->clock[CLK_BUS]);
@@ -331,7 +331,7 @@ struct fimc_vid_cap {
struct fimc_ctx *ctx;
struct vb2_alloc_ctx *alloc_ctx;
struct video_device *vfd;
- struct v4l2_subdev *subdev;
+ struct v4l2_subdev subdev;
struct media_pad vd_pad;
struct v4l2_mbus_framefmt mf;
struct media_pad sd_pads[FIMC_SD_PADS_NUM];
@@ -737,9 +737,8 @@ void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state);
/* -----------------------------------------------------*/
/* fimc-capture.c */
-int fimc_register_capture_device(struct fimc_dev *fimc,
- struct v4l2_device *v4l2_dev);
-void fimc_unregister_capture_device(struct fimc_dev *fimc);
+int fimc_initialize_capture_subdev(struct fimc_dev *fimc);
+void fimc_unregister_capture_subdev(struct fimc_dev *fimc);
int fimc_capture_ctrls_create(struct fimc_dev *fimc);
void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification,
void *arg);
@@ -777,7 +777,8 @@ int fimc_register_m2m_device(struct fimc_dev *fimc,
* This driver needs auditing so that this flag can be removed.
*/
set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags);
- snprintf(vfd->name, sizeof(vfd->name), "%s.m2m", dev_name(&pdev->dev));
+
+ snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.m2m", fimc->id);
video_set_drvdata(vfd, fimc);
fimc->m2m.vfd = vfd;
@@ -789,9 +790,20 @@ int fimc_register_m2m_device(struct fimc_dev *fimc,
}
ret = media_entity_init(&vfd->entity, 0, NULL, 0);
- if (!ret)
- return 0;
+ if (ret)
+ goto err_me;
+
+ ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1);
+ if (ret)
+ goto err_vd;
+
+ v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n",
+ vfd->name, video_device_node_name(vfd));
+ return 0;
+err_vd:
+ media_entity_cleanup(&vfd->entity);
+err_me:
v4l2_m2m_release(fimc->m2m.m2m_dev);
err_init:
video_device_release(fimc->m2m.vfd);
@@ -304,8 +304,9 @@ static int fimc_md_register_sensor_entities(struct fimc_md *fmd)
static int fimc_register_callback(struct device *dev, void *p)
{
struct fimc_dev *fimc = dev_get_drvdata(dev);
+ struct v4l2_subdev *sd = &fimc->vid_cap.subdev;
struct fimc_md *fmd = p;
- int ret;
+ int ret = 0;
if (!fimc || !fimc->pdev)
return 0;
@@ -313,12 +314,14 @@ static int fimc_register_callback(struct device *dev, void *p)
return 0;
fmd->fimc[fimc->pdev->id] = fimc;
- ret = fimc_register_m2m_device(fimc, &fmd->v4l2_dev);
- if (ret)
- return ret;
- ret = fimc_register_capture_device(fimc, &fmd->v4l2_dev);
- if (!ret)
- fimc->vid_cap.user_subdev_api = fmd->user_subdev_api;
+ sd->grp_id = FIMC_GROUP_ID;
+
+ ret = v4l2_device_register_subdev(&fmd->v4l2_dev, sd);
+ if (ret) {
+ v4l2_err(&fmd->v4l2_dev, "Failed to register FIMC.%d (%d)\n",
+ fimc->id, ret);
+ }
+
return ret;
}
@@ -401,8 +404,7 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd)
for (i = 0; i < FIMC_MAX_DEVS; i++) {
if (fmd->fimc[i] == NULL)
continue;
- fimc_unregister_m2m_device(fmd->fimc[i]);
- fimc_unregister_capture_device(fmd->fimc[i]);
+ v4l2_device_unregister_subdev(&fmd->fimc[i]->vid_cap.subdev);
fmd->fimc[i] = NULL;
}
for (i = 0; i < CSIS_MAX_ENTITIES; i++) {
@@ -420,35 +422,6 @@ static void fimc_md_unregister_entities(struct fimc_md *fmd)
}
}
-static int fimc_md_register_video_nodes(struct fimc_md *fmd)
-{
- struct video_device *vdev;
- int i, ret = 0;
-
- for (i = 0; i < FIMC_MAX_DEVS && !ret; i++) {
- if (!fmd->fimc[i])
- continue;
-
- vdev = fmd->fimc[i]->m2m.vfd;
- if (vdev) {
- ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
- if (ret)
- break;
- v4l2_info(&fmd->v4l2_dev, "Registered %s as /dev/%s\n",
- vdev->name, video_device_node_name(vdev));
- }
-
- vdev = fmd->fimc[i]->vid_cap.vfd;
- if (vdev == NULL)
- continue;
- ret = video_register_device(vdev, VFL_TYPE_GRABBER, -1);
- v4l2_info(&fmd->v4l2_dev, "Registered %s as /dev/%s\n",
- vdev->name, video_device_node_name(vdev));
- }
-
- return ret;
-}
-
/**
* __fimc_md_create_fimc_links - create links to all FIMC entities
* @fmd: fimc media device
@@ -479,7 +452,7 @@ static int __fimc_md_create_fimc_links(struct fimc_md *fmd,
continue;
flags = (i == fimc_id) ? MEDIA_LNK_FL_ENABLED : 0;
- sink = &fmd->fimc[i]->vid_cap.subdev->entity;
+ sink = &fmd->fimc[i]->vid_cap.subdev.entity;
ret = media_entity_create_link(source, pad, sink,
FIMC_SD_PAD_SINK, flags);
if (ret)
@@ -588,7 +561,7 @@ static int fimc_md_create_links(struct fimc_md *fmd)
for (i = 0; i < FIMC_MAX_DEVS; i++) {
if (!fmd->fimc[i])
continue;
- source = &fmd->fimc[i]->vid_cap.subdev->entity;
+ source = &fmd->fimc[i]->vid_cap.subdev.entity;
sink = &fmd->fimc[i]->vid_cap.vfd->entity;
ret = media_entity_create_link(source, FIMC_SD_PAD_SOURCE,
sink, 0, flags);
@@ -817,42 +790,48 @@ static int fimc_md_probe(struct platform_device *pdev)
ret = media_device_register(&fmd->media_dev);
if (ret < 0) {
v4l2_err(v4l2_dev, "Failed to register media device: %d\n", ret);
- goto err2;
+ goto err_md;
}
ret = fimc_md_get_clocks(fmd);
if (ret)
- goto err3;
+ goto err_clk;
fmd->user_subdev_api = false;
+
+ /* Protect the media graph while we're registering entities */
+ mutex_lock(&fmd->media_dev.graph_mutex);
+
ret = fimc_md_register_platform_entities(fmd);
if (ret)
- goto err3;
+ goto err_unlock;
if (pdev->dev.platform_data) {
ret = fimc_md_register_sensor_entities(fmd);
if (ret)
- goto err3;
+ goto err_unlock;
}
ret = fimc_md_create_links(fmd);
if (ret)
- goto err3;
+ goto err_unlock;
ret = v4l2_device_register_subdev_nodes(&fmd->v4l2_dev);
if (ret)
- goto err3;
- ret = fimc_md_register_video_nodes(fmd);
- if (ret)
- goto err3;
+ goto err_unlock;
ret = device_create_file(&pdev->dev, &dev_attr_subdev_conf_mode);
- if (!ret) {
- platform_set_drvdata(pdev, fmd);
- return 0;
- }
-err3:
+ if (ret)
+ goto err_unlock;
+
+ platform_set_drvdata(pdev, fmd);
+ mutex_unlock(&fmd->media_dev.graph_mutex);
+ return 0;
+
+err_unlock:
+ mutex_unlock(&fmd->media_dev.graph_mutex);
+err_clk:
media_device_unregister(&fmd->media_dev);
fimc_md_put_clocks(fmd);
fimc_md_unregister_entities(fmd);
-err2:
+err_md:
v4l2_device_unregister(&fmd->v4l2_dev);
return ret;
}
@@ -24,6 +24,7 @@
#define SENSOR_GROUP_ID (1 << 8)
#define CSIS_GROUP_ID (1 << 9)
#define WRITEBACK_GROUP_ID (1 << 10)
+#define FIMC_GROUP_ID (1 << 11)
#define FIMC_MAX_SENSORS 8
#define FIMC_MAX_CAMCLKS 2
--
1.7.4.1