diff options
Diffstat (limited to 'drivers/media/v4l2-core')
| -rw-r--r-- | drivers/media/v4l2-core/tuner-core.c | 22 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-clk.c | 81 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ctrls.c | 22 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-dev.c | 55 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-device.c | 5 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-dv-timings.c | 6 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-ioctl.c | 12 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 4 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-of.c | 102 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-subdev.c | 33 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-core.c | 61 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-contig.c | 8 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-dma-sg.c | 8 | ||||
| -rw-r--r-- | drivers/media/v4l2-core/videobuf2-vmalloc.c | 8 |
14 files changed, 308 insertions, 119 deletions
diff --git a/drivers/media/v4l2-core/tuner-core.c b/drivers/media/v4l2-core/tuner-core.c index 559f8372e2eb..abdcffabcb59 100644 --- a/drivers/media/v4l2-core/tuner-core.c +++ b/drivers/media/v4l2-core/tuner-core.c @@ -134,6 +134,9 @@ struct tuner { unsigned int type; /* chip type id */ void *config; const char *name; +#if defined(CONFIG_MEDIA_CONTROLLER) + struct media_pad pad; +#endif }; /* @@ -434,6 +437,10 @@ static void set_type(struct i2c_client *c, unsigned int type, t->name = analog_ops->info.name; } +#ifdef CONFIG_MEDIA_CONTROLLER + t->sd.entity.name = t->name; +#endif + tuner_dbg("type set to %s\n", t->name); t->mode_mask = new_mode_mask; @@ -592,6 +599,9 @@ static int tuner_probe(struct i2c_client *client, struct tuner *t; struct tuner *radio; struct tuner *tv; +#ifdef CONFIG_MEDIA_CONTROLLER + int ret; +#endif t = kzalloc(sizeof(struct tuner), GFP_KERNEL); if (NULL == t) @@ -684,6 +694,18 @@ static int tuner_probe(struct i2c_client *client, /* Should be just before return */ register_client: +#if defined(CONFIG_MEDIA_CONTROLLER) + t->pad.flags = MEDIA_PAD_FL_SOURCE; + t->sd.entity.type = MEDIA_ENT_T_V4L2_SUBDEV_TUNER; + t->sd.entity.name = t->name; + + ret = media_entity_init(&t->sd.entity, 1, &t->pad, 0); + if (ret < 0) { + tuner_err("failed to initialize media entity!\n"); + kfree(t); + return -ENODEV; + } +#endif /* Sets a default mode */ if (t->mode_mask & T_ANALOG_TV) t->mode = V4L2_TUNER_ANALOG_TV; diff --git a/drivers/media/v4l2-core/v4l2-clk.c b/drivers/media/v4l2-core/v4l2-clk.c index e18cc0469cf8..34e416a554f6 100644 --- a/drivers/media/v4l2-core/v4l2-clk.c +++ b/drivers/media/v4l2-core/v4l2-clk.c @@ -9,6 +9,7 @@ */ #include <linux/atomic.h> +#include <linux/clk.h> #include <linux/device.h> #include <linux/errno.h> #include <linux/list.h> @@ -23,17 +24,13 @@ static DEFINE_MUTEX(clk_lock); static LIST_HEAD(clk_list); -static struct v4l2_clk *v4l2_clk_find(const char *dev_id, const char *id) +static struct v4l2_clk *v4l2_clk_find(const char *dev_id) { struct v4l2_clk *clk; - list_for_each_entry(clk, &clk_list, list) { - if (strcmp(dev_id, clk->dev_id)) - continue; - - if (!id || !clk->id || !strcmp(clk->id, id)) + list_for_each_entry(clk, &clk_list, list) + if (!strcmp(dev_id, clk->dev_id)) return clk; - } return ERR_PTR(-ENODEV); } @@ -41,9 +38,24 @@ static struct v4l2_clk *v4l2_clk_find(const char *dev_id, const char *id) struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id) { struct v4l2_clk *clk; + struct clk *ccf_clk = clk_get(dev, id); + + if (PTR_ERR(ccf_clk) == -EPROBE_DEFER) + return ERR_PTR(-EPROBE_DEFER); + + if (!IS_ERR_OR_NULL(ccf_clk)) { + clk = kzalloc(sizeof(*clk), GFP_KERNEL); + if (!clk) { + clk_put(ccf_clk); + return ERR_PTR(-ENOMEM); + } + clk->clk = ccf_clk; + + return clk; + } mutex_lock(&clk_lock); - clk = v4l2_clk_find(dev_name(dev), id); + clk = v4l2_clk_find(dev_name(dev)); if (!IS_ERR(clk)) atomic_inc(&clk->use_count); @@ -60,6 +72,12 @@ void v4l2_clk_put(struct v4l2_clk *clk) if (IS_ERR(clk)) return; + if (clk->clk) { + clk_put(clk->clk); + kfree(clk); + return; + } + mutex_lock(&clk_lock); list_for_each_entry(tmp, &clk_list, list) @@ -97,8 +115,12 @@ static void v4l2_clk_unlock_driver(struct v4l2_clk *clk) int v4l2_clk_enable(struct v4l2_clk *clk) { - int ret = v4l2_clk_lock_driver(clk); + int ret; + + if (clk->clk) + return clk_prepare_enable(clk->clk); + ret = v4l2_clk_lock_driver(clk); if (ret < 0) return ret; @@ -124,11 +146,14 @@ void v4l2_clk_disable(struct v4l2_clk *clk) { int enable; + if (clk->clk) + return clk_disable_unprepare(clk->clk); + mutex_lock(&clk->lock); enable = --clk->enable; - if (WARN(enable < 0, "Unbalanced %s() on %s:%s!\n", __func__, - clk->dev_id, clk->id)) + if (WARN(enable < 0, "Unbalanced %s() on %s!\n", __func__, + clk->dev_id)) clk->enable++; else if (!enable && clk->ops->disable) clk->ops->disable(clk); @@ -141,8 +166,12 @@ EXPORT_SYMBOL(v4l2_clk_disable); unsigned long v4l2_clk_get_rate(struct v4l2_clk *clk) { - int ret = v4l2_clk_lock_driver(clk); + int ret; + + if (clk->clk) + return clk_get_rate(clk->clk); + ret = v4l2_clk_lock_driver(clk); if (ret < 0) return ret; @@ -161,7 +190,16 @@ EXPORT_SYMBOL(v4l2_clk_get_rate); int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate) { - int ret = v4l2_clk_lock_driver(clk); + int ret; + + if (clk->clk) { + long r = clk_round_rate(clk->clk, rate); + if (r < 0) + return r; + return clk_set_rate(clk->clk, r); + } + + ret = v4l2_clk_lock_driver(clk); if (ret < 0) return ret; @@ -181,7 +219,7 @@ EXPORT_SYMBOL(v4l2_clk_set_rate); struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, const char *dev_id, - const char *id, void *priv) + void *priv) { struct v4l2_clk *clk; int ret; @@ -193,9 +231,8 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, if (!clk) return ERR_PTR(-ENOMEM); - clk->id = kstrdup(id, GFP_KERNEL); clk->dev_id = kstrdup(dev_id, GFP_KERNEL); - if ((id && !clk->id) || !clk->dev_id) { + if (!clk->dev_id) { ret = -ENOMEM; goto ealloc; } @@ -205,7 +242,7 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, mutex_init(&clk->lock); mutex_lock(&clk_lock); - if (!IS_ERR(v4l2_clk_find(dev_id, id))) { + if (!IS_ERR(v4l2_clk_find(dev_id))) { mutex_unlock(&clk_lock); ret = -EEXIST; goto eexist; @@ -217,7 +254,6 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, eexist: ealloc: - kfree(clk->id); kfree(clk->dev_id); kfree(clk); return ERR_PTR(ret); @@ -227,15 +263,14 @@ EXPORT_SYMBOL(v4l2_clk_register); void v4l2_clk_unregister(struct v4l2_clk *clk) { if (WARN(atomic_read(&clk->use_count), - "%s(): Refusing to unregister ref-counted %s:%s clock!\n", - __func__, clk->dev_id, clk->id)) + "%s(): Refusing to unregister ref-counted %s clock!\n", + __func__, clk->dev_id)) return; mutex_lock(&clk_lock); list_del(&clk->list); mutex_unlock(&clk_lock); - kfree(clk->id); kfree(clk->dev_id); kfree(clk); } @@ -253,7 +288,7 @@ static unsigned long fixed_get_rate(struct v4l2_clk *clk) } struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, - const char *id, unsigned long rate, struct module *owner) + unsigned long rate, struct module *owner) { struct v4l2_clk *clk; struct v4l2_clk_fixed *priv = kzalloc(sizeof(*priv), GFP_KERNEL); @@ -265,7 +300,7 @@ struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, priv->ops.get_rate = fixed_get_rate; priv->ops.owner = owner; - clk = v4l2_clk_register(&priv->ops, dev_id, id, priv); + clk = v4l2_clk_register(&priv->ops, dev_id, priv); if (IS_ERR(clk)) kfree(priv); diff --git a/drivers/media/v4l2-core/v4l2-ctrls.c b/drivers/media/v4l2-core/v4l2-ctrls.c index 45c5b4710601..e3a3468002e6 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls.c +++ b/drivers/media/v4l2-core/v4l2-ctrls.c @@ -991,7 +991,8 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_AUTO_FOCUS_START: case V4L2_CID_AUTO_FOCUS_STOP: *type = V4L2_CTRL_TYPE_BUTTON; - *flags |= V4L2_CTRL_FLAG_WRITE_ONLY; + *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; *min = *max = *step = *def = 0; break; case V4L2_CID_POWER_LINE_FREQUENCY: @@ -1172,7 +1173,8 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_FOCUS_RELATIVE: case V4L2_CID_IRIS_RELATIVE: case V4L2_CID_ZOOM_RELATIVE: - *flags |= V4L2_CTRL_FLAG_WRITE_ONLY; + *flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; break; case V4L2_CID_FLASH_STROBE_STATUS: case V4L2_CID_AUTO_FOCUS_STATUS: @@ -1609,6 +1611,19 @@ static int cluster_changed(struct v4l2_ctrl *master) if (ctrl == NULL) continue; + + if (ctrl->flags & V4L2_CTRL_FLAG_EXECUTE_ON_WRITE) + changed = ctrl_changed = true; + + /* + * Set has_changed to false to avoid generating + * the event V4L2_EVENT_CTRL_CH_VALUE + */ + if (ctrl->flags & V4L2_CTRL_FLAG_VOLATILE) { + ctrl->has_changed = false; + continue; + } + for (idx = 0; !ctrl_changed && idx < ctrl->elems; idx++) ctrl_changed = !ctrl->type_ops->equal(ctrl, idx, ctrl->p_cur, ctrl->p_new); @@ -1974,7 +1989,8 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, sz_extra = 0; if (type == V4L2_CTRL_TYPE_BUTTON) - flags |= V4L2_CTRL_FLAG_WRITE_ONLY; + flags |= V4L2_CTRL_FLAG_WRITE_ONLY | + V4L2_CTRL_FLAG_EXECUTE_ON_WRITE; else if (type == V4L2_CTRL_TYPE_CTRL_CLASS) flags |= V4L2_CTRL_FLAG_READ_ONLY; else if (type == V4L2_CTRL_TYPE_INTEGER64 || diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 86bb93fd7db8..71a1b93b0790 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -357,34 +357,6 @@ static long v4l2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg) ret = vdev->fops->unlocked_ioctl(filp, cmd, arg); if (lock) mutex_unlock(lock); - } else if (vdev->fops->ioctl) { - /* This code path is a replacement for the BKL. It is a major - * hack but it will have to do for those drivers that are not - * yet converted to use unlocked_ioctl. - * - * All drivers implement struct v4l2_device, so we use the - * lock defined there to serialize the ioctls. - * - * However, if the driver sleeps, then it blocks all ioctls - * since the lock is still held. This is very common for - * VIDIOC_DQBUF since that normally waits for a frame to arrive. - * As a result any other ioctl calls will proceed very, very - * slowly since each call will have to wait for the VIDIOC_QBUF - * to finish. Things that should take 0.01s may now take 10-20 - * seconds. - * - * The workaround is to *not* take the lock for VIDIOC_DQBUF. - * This actually works OK for videobuf-based drivers, since - * videobuf will take its own internal lock. - */ - struct mutex *m = &vdev->v4l2_dev->ioctl_lock; - - if (cmd != VIDIOC_DQBUF && mutex_lock_interruptible(m)) - return -ERESTARTSYS; - if (video_is_registered(vdev)) - ret = vdev->fops->ioctl(filp, cmd, arg); - if (cmd != VIDIOC_DQBUF) - mutex_unlock(m); } else ret = -ENOTTY; @@ -560,10 +532,9 @@ static void determine_valid_ioctls(struct video_device *vdev) /* vfl_type and vfl_dir independent ioctls */ SET_VALID_IOCTL(ops, VIDIOC_QUERYCAP, vidioc_querycap); - if (ops->vidioc_g_priority) - set_bit(_IOC_NR(VIDIOC_G_PRIORITY), valid_ioctls); - if (ops->vidioc_s_priority) - set_bit(_IOC_NR(VIDIOC_S_PRIORITY), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_G_PRIORITY), valid_ioctls); + set_bit(_IOC_NR(VIDIOC_S_PRIORITY), valid_ioctls); + /* Note: the control handler can also be passed through the filehandle, and that can't be tested here. If the bit for these control ioctls is set, then the ioctl is valid. But if it is 0, then it can still @@ -640,6 +611,14 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_TRY_DECODER_CMD, vidioc_try_decoder_cmd); SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMESIZES, vidioc_enum_framesizes); SET_VALID_IOCTL(ops, VIDIOC_ENUM_FRAMEINTERVALS, vidioc_enum_frameintervals); + if (ops->vidioc_g_crop || ops->vidioc_g_selection) + set_bit(_IOC_NR(VIDIOC_G_CROP), valid_ioctls); + if (ops->vidioc_s_crop || ops->vidioc_s_selection) + set_bit(_IOC_NR(VIDIOC_S_CROP), valid_ioctls); + SET_VALID_IOCTL(ops, VIDIOC_G_SELECTION, vidioc_g_selection); + SET_VALID_IOCTL(ops, VIDIOC_S_SELECTION, vidioc_s_selection); + if (ops->vidioc_cropcap || ops->vidioc_g_selection) + set_bit(_IOC_NR(VIDIOC_CROPCAP), valid_ioctls); } else if (is_vbi) { /* vbi specific ioctls */ if ((is_rx && (ops->vidioc_g_fmt_vbi_cap || @@ -708,14 +687,6 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_G_AUDOUT, vidioc_g_audout); SET_VALID_IOCTL(ops, VIDIOC_S_AUDOUT, vidioc_s_audout); } - if (ops->vidioc_g_crop || ops->vidioc_g_selection) - set_bit(_IOC_NR(VIDIOC_G_CROP), valid_ioctls); - if (ops->vidioc_s_crop || ops->vidioc_s_selection) - set_bit(_IOC_NR(VIDIOC_S_CROP), valid_ioctls); - SET_VALID_IOCTL(ops, VIDIOC_G_SELECTION, vidioc_g_selection); - SET_VALID_IOCTL(ops, VIDIOC_S_SELECTION, vidioc_s_selection); - if (ops->vidioc_cropcap || ops->vidioc_g_selection) - set_bit(_IOC_NR(VIDIOC_CROPCAP), valid_ioctls); if (ops->vidioc_g_parm || (vdev->vfl_type == VFL_TYPE_GRABBER && ops->vidioc_g_std)) set_bit(_IOC_NR(VIDIOC_G_PARM), valid_ioctls); @@ -943,8 +914,8 @@ int __video_register_device(struct video_device *vdev, int type, int nr, vdev->vfl_type != VFL_TYPE_SUBDEV) { vdev->entity.type = MEDIA_ENT_T_DEVNODE_V4L; vdev->entity.name = vdev->name; - vdev->entity.info.v4l.major = VIDEO_MAJOR; - vdev->entity.info.v4l.minor = vdev->minor; + vdev->entity.info.dev.major = VIDEO_MAJOR; + vdev->entity.info.dev.minor = vdev->minor; ret = media_device_register_entity(vdev->v4l2_dev->mdev, &vdev->entity); if (ret < 0) diff --git a/drivers/media/v4l2-core/v4l2-device.c b/drivers/media/v4l2-core/v4l2-device.c index 015f92aab44a..5b0a30b9252b 100644 --- a/drivers/media/v4l2-core/v4l2-device.c +++ b/drivers/media/v4l2-core/v4l2-device.c @@ -37,7 +37,6 @@ int v4l2_device_register(struct device *dev, struct v4l2_device *v4l2_dev) INIT_LIST_HEAD(&v4l2_dev->subdevs); spin_lock_init(&v4l2_dev->lock); - mutex_init(&v4l2_dev->ioctl_lock); v4l2_prio_init(&v4l2_dev->prio); kref_init(&v4l2_dev->ref); get_device(dev); @@ -248,8 +247,8 @@ int v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev) goto clean_up; } #if defined(CONFIG_MEDIA_CONTROLLER) - sd->entity.info.v4l.major = VIDEO_MAJOR; - sd->entity.info.v4l.minor = vdev->minor; + sd->entity.info.dev.major = VIDEO_MAJOR; + sd->entity.info.dev.minor = vdev->minor; #endif sd->devnode = vdev; } diff --git a/drivers/media/v4l2-core/v4l2-dv-timings.c b/drivers/media/v4l2-core/v4l2-dv-timings.c index b1d8dbb39665..c0e96382feba 100644 --- a/drivers/media/v4l2-core/v4l2-dv-timings.c +++ b/drivers/media/v4l2-core/v4l2-dv-timings.c @@ -282,7 +282,7 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, (bt->polarities & V4L2_DV_VSYNC_POS_POL) ? "+" : "-", bt->vsync, bt->vbackporch); pr_info("%s: pixelclock: %llu\n", dev_prefix, bt->pixelclock); - pr_info("%s: flags (0x%x):%s%s%s%s\n", dev_prefix, bt->flags, + pr_info("%s: flags (0x%x):%s%s%s%s%s\n", dev_prefix, bt->flags, (bt->flags & V4L2_DV_FL_REDUCED_BLANKING) ? " REDUCED_BLANKING" : "", (bt->flags & V4L2_DV_FL_CAN_REDUCE_FPS) ? @@ -290,7 +290,9 @@ void v4l2_print_dv_timings(const char *dev_prefix, const char *prefix, (bt->flags & V4L2_DV_FL_REDUCED_FPS) ? " REDUCED_FPS" : "", (bt->flags & V4L2_DV_FL_HALF_LINE) ? - " HALF_LINE" : ""); + " HALF_LINE" : "", + (bt->flags & V4L2_DV_FL_IS_CE_VIDEO) ? + " CE_VIDEO" : ""); pr_info("%s: standards (0x%x):%s%s%s%s\n", dev_prefix, bt->standards, (bt->standards & V4L2_DV_BT_STD_CEA861) ? " CEA" : "", (bt->standards & V4L2_DV_BT_STD_DMT) ? " DMT" : "", diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index b08407225db1..aa407cb5f830 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -257,7 +257,7 @@ static void v4l_print_format(const void *arg, bool write_only) pr_cont(", width=%u, height=%u, " "pixelformat=%c%c%c%c, field=%s, " "bytesperline=%u, sizeimage=%u, colorspace=%d, " - "flags %x, ycbcr_enc=%u, quantization=%u\n", + "flags=0x%x, ycbcr_enc=%u, quantization=%u\n", pix->width, pix->height, (pix->pixelformat & 0xff), (pix->pixelformat >> 8) & 0xff, @@ -273,7 +273,7 @@ static void v4l_print_format(const void *arg, bool write_only) mp = &p->fmt.pix_mp; pr_cont(", width=%u, height=%u, " "format=%c%c%c%c, field=%s, " - "colorspace=%d, num_planes=%u, flags=%x, " + "colorspace=%d, num_planes=%u, flags=0x%x, " "ycbcr_enc=%u, quantization=%u\n", mp->width, mp->height, (mp->pixelformat & 0xff), @@ -901,6 +901,8 @@ static int check_ext_ctrls(struct v4l2_ext_controls *c, int allow_priv) */ if (!allow_priv && c->ctrl_class == V4L2_CID_PRIVATE_BASE) return 0; + if (c->ctrl_class == 0) + return 1; /* Check that all controls are from the same control class. */ for (i = 0; i < c->count; i++) { if (V4L2_CTRL_ID2CLASS(c->controls[i].id) != c->ctrl_class) { @@ -1046,8 +1048,6 @@ static int v4l_g_priority(const struct v4l2_ioctl_ops *ops, struct video_device *vfd; u32 *p = arg; - if (ops->vidioc_g_priority) - return ops->vidioc_g_priority(file, fh, arg); vfd = video_devdata(file); *p = v4l2_prio_max(vfd->prio); return 0; @@ -1060,9 +1060,9 @@ static int v4l_s_priority(const struct v4l2_ioctl_ops *ops, struct v4l2_fh *vfh; u32 *p = arg; - if (ops->vidioc_s_priority) - return ops->vidioc_s_priority(file, fh, *p); vfd = video_devdata(file); + if (!test_bit(V4L2_FL_USES_V4L2_FH, &vfd->flags)) + return -ENOTTY; vfh = file->private_data; return v4l2_prio_change(vfd->prio, &vfh->prio, *p); } diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 80c588f4e429..73824a5ada83 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -97,7 +97,7 @@ EXPORT_SYMBOL(v4l2_m2m_get_vq); */ void *v4l2_m2m_next_buf(struct v4l2_m2m_queue_ctx *q_ctx) { - struct v4l2_m2m_buffer *b = NULL; + struct v4l2_m2m_buffer *b; unsigned long flags; spin_lock_irqsave(&q_ctx->rdy_spinlock, flags); @@ -119,7 +119,7 @@ EXPORT_SYMBOL_GPL(v4l2_m2m_next_buf); */ void *v4l2_m2m_buf_remove(struct v4l2_m2m_queue_ctx *q_ctx) { - struct v4l2_m2m_buffer *b = NULL; + struct v4l2_m2m_buffer *b; unsigned long flags; spin_lock_irqsave(&q_ctx->rdy_spinlock, flags); diff --git a/drivers/media/v4l2-core/v4l2-of.c b/drivers/media/v4l2-core/v4l2-of.c index b4ed9a955fbe..83143d39dea7 100644 --- a/drivers/media/v4l2-core/v4l2-of.c +++ b/drivers/media/v4l2-core/v4l2-of.c @@ -19,11 +19,10 @@ #include <media/v4l2-of.h> -static void v4l2_of_parse_csi_bus(const struct device_node *node, - struct v4l2_of_endpoint *endpoint) +static int v4l2_of_parse_csi_bus(const struct device_node *node, + struct v4l2_of_endpoint *endpoint) { struct v4l2_of_bus_mipi_csi2 *bus = &endpoint->bus.mipi_csi2; - u32 data_lanes[ARRAY_SIZE(bus->data_lanes)]; struct property *prop; bool have_clk_lane = false; unsigned int flags = 0; @@ -32,16 +31,34 @@ static void v4l2_of_parse_csi_bus(const struct device_node *node, prop = of_find_property(node, "data-lanes", NULL); if (prop) { const __be32 *lane = NULL; - int i; + unsigned int i; - for (i = 0; i < ARRAY_SIZE(data_lanes); i++) { - lane = of_prop_next_u32(prop, lane, &data_lanes[i]); + for (i = 0; i < ARRAY_SIZE(bus->data_lanes); i++) { + lane = of_prop_next_u32(prop, lane, &v); if (!lane) break; + bus->data_lanes[i] = v; } bus->num_data_lanes = i; - while (i--) - bus->data_lanes[i] = data_lanes[i]; + } + + prop = of_find_property(node, "lane-polarities", NULL); + if (prop) { + const __be32 *polarity = NULL; + unsigned int i; + + for (i = 0; i < ARRAY_SIZE(bus->lane_polarities); i++) { + polarity = of_prop_next_u32(prop, polarity, &v); + if (!polarity) + break; + bus->lane_polarities[i] = v; + } + + if (i < 1 + bus->num_data_lanes /* clock + data */) { + pr_warn("%s: too few lane-polarities entries (need %u, got %u)\n", + node->full_name, 1 + bus->num_data_lanes, i); + return -EINVAL; + } } if (!of_property_read_u32(node, "clock-lanes", &v)) { @@ -56,6 +73,8 @@ static void v4l2_of_parse_csi_bus(const struct device_node *node, bus->flags = flags; endpoint->bus_type = V4L2_MBUS_CSI2; + + return 0; } static void v4l2_of_parse_parallel_bus(const struct device_node *node, @@ -127,11 +146,15 @@ static void v4l2_of_parse_parallel_bus(const struct device_node *node, int v4l2_of_parse_endpoint(const struct device_node *node, struct v4l2_of_endpoint *endpoint) { + int rval; + of_graph_parse_endpoint(node, &endpoint->base); endpoint->bus_type = 0; memset(&endpoint->bus, 0, sizeof(endpoint->bus)); - v4l2_of_parse_csi_bus(node, endpoint); + rval = v4l2_of_parse_csi_bus(node, endpoint); + if (rval) + return rval; /* * Parse the parallel video bus properties only if none * of the MIPI CSI-2 specific properties were found. @@ -142,3 +165,64 @@ int v4l2_of_parse_endpoint(const struct device_node *node, return 0; } EXPORT_SYMBOL(v4l2_of_parse_endpoint); + +/** + * v4l2_of_parse_link() - parse a link between two endpoints + * @node: pointer to the endpoint at the local end of the link + * @link: pointer to the V4L2 OF link data structure + * + * Fill the link structure with the local and remote nodes and port numbers. + * The local_node and remote_node fields are set to point to the local and + * remote port's parent nodes respectively (the port parent node being the + * parent node of the port node if that node isn't a 'ports' node, or the + * grand-parent node of the port node otherwise). + * + * A reference is taken to both the local and remote nodes, the caller must use + * v4l2_of_put_link() to drop the references when done with the link. + * + * Return: 0 on success, or -ENOLINK if the remote endpoint can't be found. + */ +int v4l2_of_parse_link(const struct device_node *node, + struct v4l2_of_link *link) +{ + struct device_node *np; + + memset(link, 0, sizeof(*link)); + + np = of_get_parent(node); + of_property_read_u32(np, "reg", &link->local_port); + np = of_get_next_parent(np); + if (of_node_cmp(np->name, "ports") == 0) + np = of_get_next_parent(np); + link->local_node = np; + + np = of_parse_phandle(node, "remote-endpoint", 0); + if (!np) { + of_node_put(link->local_node); + return -ENOLINK; + } + + np = of_get_parent(np); + of_property_read_u32(np, "reg", &link->remote_port); + np = of_get_next_parent(np); + if (of_node_cmp(np->name, "ports") == 0) + np = of_get_next_parent(np); + link->remote_node = np; + + return 0; +} +EXPORT_SYMBOL(v4l2_of_parse_link); + +/** + * v4l2_of_put_link() - drop references to nodes in a link + * @link: pointer to the V4L2 OF link data structure + * + * Drop references to the local and remote nodes in the link. This function must + * be called on every link parsed with v4l2_of_parse_link(). + */ +void v4l2_of_put_link(struct v4l2_of_link *link) +{ + of_node_put(link->local_node); + of_node_put(link->remote_node); +} +EXPORT_SYMBOL(v4l2_of_put_link); diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index 19a034e79be4..63596063b213 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -93,8 +93,7 @@ static int subdev_open(struct file *file) err: #if defined(CONFIG_MEDIA_CONTROLLER) - if (entity) - media_entity_put(entity); + media_entity_put(entity); #endif v4l2_fh_del(&subdev_fh->vfh); v4l2_fh_exit(&subdev_fh->vfh); @@ -262,7 +261,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (rval) return rval; - return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh, format); + return v4l2_subdev_call(sd, pad, get_fmt, subdev_fh->pad, format); } case VIDIOC_SUBDEV_S_FMT: { @@ -272,7 +271,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) if (rval) return rval; - return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh, format); + return v4l2_subdev_call(sd, pad, set_fmt, subdev_fh->pad, format); } case VIDIOC_SUBDEV_G_CROP: { @@ -289,7 +288,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) sel.target = V4L2_SEL_TGT_CROP; rval = v4l2_subdev_call( - sd, pad, get_selection, subdev_fh, &sel); + sd, pad, get_selection, subdev_fh->pad, &sel); crop->rect = sel.r; @@ -311,7 +310,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) sel.r = crop->rect; rval = v4l2_subdev_call( - sd, pad, set_selection, subdev_fh, &sel); + sd, pad, set_selection, subdev_fh->pad, &sel); crop->rect = sel.r; @@ -321,20 +320,28 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) case VIDIOC_SUBDEV_ENUM_MBUS_CODE: { struct v4l2_subdev_mbus_code_enum *code = arg; + if (code->which != V4L2_SUBDEV_FORMAT_TRY && + code->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + if (code->pad >= sd->entity.num_pads) return -EINVAL; - return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh, + return v4l2_subdev_call(sd, pad, enum_mbus_code, subdev_fh->pad, code); } case VIDIOC_SUBDEV_ENUM_FRAME_SIZE: { struct v4l2_subdev_frame_size_enum *fse = arg; + if (fse->which != V4L2_SUBDEV_FORMAT_TRY && + fse->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + if (fse->pad >= sd->entity.num_pads) return -EINVAL; - return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh, + return v4l2_subdev_call(sd, pad, enum_frame_size, subdev_fh->pad, fse); } @@ -359,10 +366,14 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) case VIDIOC_SUBDEV_ENUM_FRAME_INTERVAL: { struct v4l2_subdev_frame_interval_enum *fie = arg; + if (fie->which != V4L2_SUBDEV_FORMAT_TRY && + fie->which != V4L2_SUBDEV_FORMAT_ACTIVE) + return -EINVAL; + if (fie->pad >= sd->entity.num_pads) return -EINVAL; - return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh, + return v4l2_subdev_call(sd, pad, enum_frame_interval, subdev_fh->pad, fie); } @@ -374,7 +385,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) return rval; return v4l2_subdev_call( - sd, pad, get_selection, subdev_fh, sel); + sd, pad, get_selection, subdev_fh->pad, sel); } case VIDIOC_SUBDEV_S_SELECTION: { @@ -385,7 +396,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg) return rval; return v4l2_subdev_call( - sd, pad, set_selection, subdev_fh, sel); + sd, pad, set_selection, subdev_fh->pad, sel); } case VIDIOC_G_EDID: { diff --git a/drivers/media/v4l2-core/videobuf2-core.c b/drivers/media/v4l2-core/videobuf2-core.c index cc16e76a2493..66ada01c796c 100644 --- a/drivers/media/v4l2-core/videobuf2-core.c +++ b/drivers/media/v4l2-core/videobuf2-core.c @@ -1247,6 +1247,16 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b { unsigned int plane; + if (V4L2_TYPE_IS_OUTPUT(b->type)) { + if (WARN_ON_ONCE(b->bytesused == 0)) { + pr_warn_once("use of bytesused == 0 is deprecated and will be removed in the future,\n"); + if (vb->vb2_queue->allow_zero_bytesused) + pr_warn_once("use VIDIOC_DECODER_CMD(V4L2_DEC_CMD_STOP) instead.\n"); + else + pr_warn_once("use the actual size instead.\n"); + } + } + if (V4L2_TYPE_IS_MULTIPLANAR(b->type)) { if (b->memory == V4L2_MEMORY_USERPTR) { for (plane = 0; plane < vb->num_planes; ++plane) { @@ -1276,13 +1286,22 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b * userspace clearly never bothered to set it and * it's a safe assumption that they really meant to * use the full plane sizes. + * + * Some drivers, e.g. old codec drivers, use bytesused == 0 + * as a way to indicate that streaming is finished. + * In that case, the driver should use the + * allow_zero_bytesused flag to keep old userspace + * applications working. */ for (plane = 0; plane < vb->num_planes; ++plane) { struct v4l2_plane *pdst = &v4l2_planes[plane]; struct v4l2_plane *psrc = &b->m.planes[plane]; - pdst->bytesused = psrc->bytesused ? - psrc->bytesused : pdst->length; + if (vb->vb2_queue->allow_zero_bytesused) + pdst->bytesused = psrc->bytesused; + else + pdst->bytesused = psrc->bytesused ? + psrc->bytesused : pdst->length; pdst->data_offset = psrc->data_offset; } } @@ -1295,6 +1314,11 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b * * If bytesused == 0 for the output buffer, then fall back * to the full buffer size as that's a sensible default. + * + * Some drivers, e.g. old codec drivers, use bytesused == 0 as + * a way to indicate that streaming is finished. In that case, + * the driver should use the allow_zero_bytesused flag to keep + * old userspace applications working. */ if (b->memory == V4L2_MEMORY_USERPTR) { v4l2_planes[0].m.userptr = b->m.userptr; @@ -1306,10 +1330,13 @@ static void __fill_vb2_buffer(struct vb2_buffer *vb, const struct v4l2_buffer *b v4l2_planes[0].length = b->length; } - if (V4L2_TYPE_IS_OUTPUT(b->type)) - v4l2_planes[0].bytesused = b->bytesused ? - b->bytesused : v4l2_planes[0].length; - else + if (V4L2_TYPE_IS_OUTPUT(b->type)) { + if (vb->vb2_queue->allow_zero_bytesused) + v4l2_planes[0].bytesused = b->bytesused; + else + v4l2_planes[0].bytesused = b->bytesused ? + b->bytesused : v4l2_planes[0].length; + } else v4l2_planes[0].bytesused = 0; } @@ -2760,7 +2787,8 @@ struct vb2_fileio_data { unsigned int initial_index; unsigned int q_count; unsigned int dq_count; - unsigned int flags; + unsigned read_once:1; + unsigned write_immediately:1; }; /** @@ -2798,14 +2826,16 @@ static int __vb2_init_fileio(struct vb2_queue *q, int read) */ count = 1; - dprintk(3, "setting up file io: mode %s, count %d, flags %08x\n", - (read) ? "read" : "write", count, q->io_flags); + dprintk(3, "setting up file io: mode %s, count %d, read_once %d, write_immediately %d\n", + (read) ? "read" : "write", count, q->fileio_read_once, + q->fileio_write_immediately); fileio = kzalloc(sizeof(struct vb2_fileio_data), GFP_KERNEL); if (fileio == NULL) return -ENOMEM; - fileio->flags = q->io_flags; + fileio->read_once = q->fileio_read_once; + fileio->write_immediately = q->fileio_write_immediately; /* * Request buffers and use MMAP type to force driver @@ -3028,13 +3058,11 @@ static size_t __vb2_perform_fileio(struct vb2_queue *q, char __user *data, size_ /* * Queue next buffer if required. */ - if (buf->pos == buf->size || - (!read && (fileio->flags & VB2_FILEIO_WRITE_IMMEDIATELY))) { + if (buf->pos == buf->size || (!read && fileio->write_immediately)) { /* * Check if this is the last buffer to read. */ - if (read && (fileio->flags & VB2_FILEIO_READ_ONCE) && - fileio->dq_count == 1) { + if (read && fileio->read_once && fileio->dq_count == 1) { dprintk(3, "read limit reached\n"); return __vb2_cleanup_fileio(q); } @@ -3225,7 +3253,6 @@ EXPORT_SYMBOL_GPL(vb2_thread_start); int vb2_thread_stop(struct vb2_queue *q) { struct vb2_threadio_data *threadio = q->threadio; - struct vb2_fileio_data *fileio = q->fileio; int err; if (threadio == NULL) @@ -3411,6 +3438,8 @@ ssize_t vb2_fop_write(struct file *file, const char __user *buf, struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; int err = -EBUSY; + if (!(vdev->queue->io_modes & VB2_WRITE)) + return -EINVAL; if (lock && mutex_lock_interruptible(lock)) return -ERESTARTSYS; if (vb2_queue_is_busy(vdev, file)) @@ -3433,6 +3462,8 @@ ssize_t vb2_fop_read(struct file *file, char __user *buf, struct mutex *lock = vdev->queue->lock ? vdev->queue->lock : vdev->lock; int err = -EBUSY; + if (!(vdev->queue->io_modes & VB2_READ)) + return -EINVAL; if (lock && mutex_lock_interruptible(lock)) return -ERESTARTSYS; if (vb2_queue_is_busy(vdev, file)) diff --git a/drivers/media/v4l2-core/videobuf2-dma-contig.c b/drivers/media/v4l2-core/videobuf2-dma-contig.c index 69e0483adfee..644dec73d220 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-contig.c +++ b/drivers/media/v4l2-core/videobuf2-dma-contig.c @@ -402,6 +402,12 @@ static struct dma_buf *vb2_dc_get_dmabuf(void *buf_priv, unsigned long flags) { struct vb2_dc_buf *buf = buf_priv; struct dma_buf *dbuf; + DEFINE_DMA_BUF_EXPORT_INFO(exp_info); + + exp_info.ops = &vb2_dc_dmabuf_ops; + exp_info.size = buf->size; + exp_info.flags = flags; + exp_info.priv = buf; if (!buf->sgt_base) buf->sgt_base = vb2_dc_get_base_sgt(buf); @@ -409,7 +415,7 @@ static struct dma_buf *vb2_dc_get_dmabuf(void *buf_priv, unsigned long flags) if (WARN_ON(!buf->sgt_base)) return NULL; - dbuf = dma_buf_export(buf, &vb2_dc_dmabuf_ops, buf->size, flags, NULL); + dbuf = dma_buf_export(&exp_info); if (IS_ERR(dbuf)) return NULL; diff --git a/drivers/media/v4l2-core/videobuf2-dma-sg.c b/drivers/media/v4l2-core/videobuf2-dma-sg.c index b1838abb6d00..45c708e463b9 100644 --- a/drivers/media/v4l2-core/videobuf2-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf2-dma-sg.c @@ -583,11 +583,17 @@ static struct dma_buf *vb2_dma_sg_get_dmabuf(void *buf_priv, unsigned long flags { struct vb2_dma_sg_buf *buf = buf_priv; struct dma_buf *dbuf; + DEFINE_DMA_BUF_EXPORT_INFO(exp_info); + + exp_info.ops = &vb2_dma_sg_dmabuf_ops; + exp_info.size = buf->size; + exp_info.flags = flags; + exp_info.priv = buf; if (WARN_ON(!buf->dma_sgt)) return NULL; - dbuf = dma_buf_export(buf, &vb2_dma_sg_dmabuf_ops, buf->size, flags, NULL); + dbuf = dma_buf_export(&exp_info); if (IS_ERR(dbuf)) return NULL; diff --git a/drivers/media/v4l2-core/videobuf2-vmalloc.c b/drivers/media/v4l2-core/videobuf2-vmalloc.c index bcde88572429..657ab302a5cf 100644 --- a/drivers/media/v4l2-core/videobuf2-vmalloc.c +++ b/drivers/media/v4l2-core/videobuf2-vmalloc.c @@ -368,11 +368,17 @@ static struct dma_buf *vb2_vmalloc_get_dmabuf(void *buf_priv, unsigned long flag { struct vb2_vmalloc_buf *buf = buf_priv; struct dma_buf *dbuf; + DEFINE_DMA_BUF_EXPORT_INFO(exp_info); + + exp_info.ops = &vb2_vmalloc_dmabuf_ops; + exp_info.size = buf->size; + exp_info.flags = flags; + exp_info.priv = buf; if (WARN_ON(!buf->vaddr)) return NULL; - dbuf = dma_buf_export(buf, &vb2_vmalloc_dmabuf_ops, buf->size, flags, NULL); + dbuf = dma_buf_export(&exp_info); if (IS_ERR(dbuf)) return NULL; |