V4L/DVB (10080): soc-camera: readability improvements, more strict operations checks
Simplify multiple drivers by replacing f->fmt.pix.* with a single pointer dereference, merge some needlessly broken lines, verify host and camera operations pointers on registration. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
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9414de39e8
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64f5905ee7
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@ -327,15 +327,17 @@ static int mt9m001_set_fmt(struct soc_camera_device *icd,
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static int mt9m001_try_fmt(struct soc_camera_device *icd,
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struct v4l2_format *f)
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{
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if (f->fmt.pix.height < 32 + icd->y_skip_top)
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f->fmt.pix.height = 32 + icd->y_skip_top;
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if (f->fmt.pix.height > 1024 + icd->y_skip_top)
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f->fmt.pix.height = 1024 + icd->y_skip_top;
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if (f->fmt.pix.width < 48)
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f->fmt.pix.width = 48;
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if (f->fmt.pix.width > 1280)
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f->fmt.pix.width = 1280;
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f->fmt.pix.width &= ~0x01; /* has to be even, unsure why was ~3 */
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struct v4l2_pix_format *pix = &f->fmt.pix;
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if (pix->height < 32 + icd->y_skip_top)
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pix->height = 32 + icd->y_skip_top;
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if (pix->height > 1024 + icd->y_skip_top)
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pix->height = 1024 + icd->y_skip_top;
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if (pix->width < 48)
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pix->width = 48;
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if (pix->width > 1280)
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pix->width = 1280;
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pix->width &= ~0x01; /* has to be even, unsure why was ~3 */
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return 0;
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}
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@ -503,10 +503,12 @@ static int mt9m111_set_fmt(struct soc_camera_device *icd,
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static int mt9m111_try_fmt(struct soc_camera_device *icd,
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struct v4l2_format *f)
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{
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if (f->fmt.pix.height > MT9M111_MAX_HEIGHT)
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f->fmt.pix.height = MT9M111_MAX_HEIGHT;
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if (f->fmt.pix.width > MT9M111_MAX_WIDTH)
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f->fmt.pix.width = MT9M111_MAX_WIDTH;
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struct v4l2_pix_format *pix = &f->fmt.pix;
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if (pix->height > MT9M111_MAX_HEIGHT)
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pix->height = MT9M111_MAX_HEIGHT;
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if (pix->width > MT9M111_MAX_WIDTH)
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pix->width = MT9M111_MAX_WIDTH;
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return 0;
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}
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@ -406,15 +406,17 @@ static int mt9v022_set_fmt(struct soc_camera_device *icd,
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static int mt9v022_try_fmt(struct soc_camera_device *icd,
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struct v4l2_format *f)
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{
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if (f->fmt.pix.height < 32 + icd->y_skip_top)
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f->fmt.pix.height = 32 + icd->y_skip_top;
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if (f->fmt.pix.height > 480 + icd->y_skip_top)
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f->fmt.pix.height = 480 + icd->y_skip_top;
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if (f->fmt.pix.width < 48)
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f->fmt.pix.width = 48;
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if (f->fmt.pix.width > 752)
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f->fmt.pix.width = 752;
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f->fmt.pix.width &= ~0x03; /* ? */
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struct v4l2_pix_format *pix = &f->fmt.pix;
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if (pix->height < 32 + icd->y_skip_top)
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pix->height = 32 + icd->y_skip_top;
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if (pix->height > 480 + icd->y_skip_top)
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pix->height = 480 + icd->y_skip_top;
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if (pix->width < 48)
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pix->width = 48;
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if (pix->width > 752)
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pix->width = 752;
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pix->width &= ~0x03; /* ? */
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return 0;
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}
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@ -240,8 +240,7 @@ static int pxa_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
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unsigned int *size)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
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@ -267,8 +266,7 @@ static int pxa_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
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static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb);
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int i;
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@ -344,8 +342,7 @@ static int pxa_videobuf_prepare(struct videobuf_queue *vq,
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struct videobuf_buffer *vb, enum v4l2_field field)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb);
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int ret;
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@ -464,8 +461,7 @@ static void pxa_videobuf_queue(struct videobuf_queue *vq,
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struct videobuf_buffer *vb)
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{
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struct soc_camera_device *icd = vq->priv_data;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb);
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struct pxa_buffer *active;
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@ -915,8 +911,7 @@ static int test_platform_param(struct pxa_camera_dev *pcdev,
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static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
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{
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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unsigned long dw, bpp, bus_flags, camera_flags, common_flags;
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u32 cicr0, cicr1, cicr2, cicr3, cicr4 = 0;
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@ -1298,8 +1293,7 @@ static int pxa_camera_querycap(struct soc_camera_host *ici,
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static int pxa_camera_suspend(struct soc_camera_device *icd, pm_message_t state)
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{
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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int i = 0, ret = 0;
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@ -1317,8 +1311,7 @@ static int pxa_camera_suspend(struct soc_camera_device *icd, pm_message_t state)
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static int pxa_camera_resume(struct soc_camera_device *icd)
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{
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct pxa_camera_dev *pcdev = ici->priv;
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int i = 0, ret = 0;
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@ -98,8 +98,7 @@ static int soc_camera_try_fmt_vid_cap(struct file *file, void *priv,
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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enum v4l2_field field;
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int ret;
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@ -163,8 +162,7 @@ static int soc_camera_reqbufs(struct file *file, void *priv,
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int ret;
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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WARN_ON(priv != file->private_data);
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@ -388,8 +386,7 @@ static unsigned int soc_camera_poll(struct file *file, poll_table *pt)
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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if (list_empty(&icf->vb_vidq.stream)) {
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dev_err(&icd->dev, "Trying to poll with no queued buffers!\n");
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@ -415,9 +412,9 @@ static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv,
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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__u32 pixfmt = f->fmt.pix.pixelformat;
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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struct v4l2_pix_format *pix = &f->fmt.pix;
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__u32 pixfmt = pix->pixelformat;
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int ret;
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struct v4l2_rect rect;
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@ -429,9 +426,9 @@ static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv,
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rect.left = icd->x_current;
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rect.top = icd->y_current;
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rect.width = f->fmt.pix.width;
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rect.height = f->fmt.pix.height;
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ret = ici->ops->set_fmt(icd, f->fmt.pix.pixelformat, &rect);
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rect.width = pix->width;
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rect.height = pix->height;
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ret = ici->ops->set_fmt(icd, pix->pixelformat, &rect);
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if (ret < 0) {
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return ret;
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} else if (!icd->current_fmt ||
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@ -443,7 +440,7 @@ static int soc_camera_s_fmt_vid_cap(struct file *file, void *priv,
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icd->width = rect.width;
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icd->height = rect.height;
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icf->vb_vidq.field = f->fmt.pix.field;
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icf->vb_vidq.field = pix->field;
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if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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dev_warn(&icd->dev, "Attention! Wrong buf-type %d\n",
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f->type);
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@ -479,16 +476,17 @@ static int soc_camera_g_fmt_vid_cap(struct file *file, void *priv,
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct v4l2_pix_format *pix = &f->fmt.pix;
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WARN_ON(priv != file->private_data);
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f->fmt.pix.width = icd->width;
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f->fmt.pix.height = icd->height;
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f->fmt.pix.field = icf->vb_vidq.field;
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f->fmt.pix.pixelformat = icd->current_fmt->fourcc;
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f->fmt.pix.bytesperline = f->fmt.pix.width *
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pix->width = icd->width;
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pix->height = icd->height;
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pix->field = icf->vb_vidq.field;
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pix->pixelformat = icd->current_fmt->fourcc;
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pix->bytesperline = pix->width *
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DIV_ROUND_UP(icd->current_fmt->depth, 8);
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f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
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pix->sizeimage = pix->height * pix->bytesperline;
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dev_dbg(&icd->dev, "current_fmt->fourcc: 0x%08x\n",
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icd->current_fmt->fourcc);
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return 0;
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@ -499,8 +497,7 @@ static int soc_camera_querycap(struct file *file, void *priv,
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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WARN_ON(priv != file->private_data);
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@ -651,8 +648,7 @@ static int soc_camera_s_crop(struct file *file, void *fh,
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{
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struct soc_camera_file *icf = file->private_data;
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struct soc_camera_device *icd = icf->icd;
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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int ret;
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if (a->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
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@ -776,13 +772,9 @@ static int scan_add_device(struct soc_camera_device *icd)
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static int soc_camera_probe(struct device *dev)
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{
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struct soc_camera_device *icd = to_soc_camera_dev(dev);
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struct soc_camera_host *ici =
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to_soc_camera_host(icd->dev.parent);
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struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
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int ret;
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if (!icd->ops->probe)
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return -ENODEV;
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/* We only call ->add() here to activate and probe the camera.
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* We shall ->remove() and deactivate it immediately afterwards. */
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ret = ici->ops->add(icd);
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@ -863,7 +855,16 @@ int soc_camera_host_register(struct soc_camera_host *ici)
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int ret;
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struct soc_camera_host *ix;
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if (!ici->ops->init_videobuf || !ici->ops->add || !ici->ops->remove)
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if (!ici || !ici->ops ||
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!ici->ops->try_fmt ||
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!ici->ops->set_fmt ||
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!ici->ops->set_bus_param ||
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!ici->ops->querycap ||
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!ici->ops->init_videobuf ||
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!ici->ops->reqbufs ||
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!ici->ops->add ||
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!ici->ops->remove ||
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!ici->ops->poll)
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return -EINVAL;
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/* Number might be equal to the platform device ID */
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@ -931,7 +932,16 @@ int soc_camera_device_register(struct soc_camera_device *icd)
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struct soc_camera_device *ix;
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int num = -1, i;
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if (!icd)
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if (!icd || !icd->ops ||
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!icd->ops->probe ||
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!icd->ops->init ||
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!icd->ops->release ||
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!icd->ops->start_capture ||
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!icd->ops->stop_capture ||
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!icd->ops->set_fmt ||
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!icd->ops->try_fmt ||
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!icd->ops->query_bus_param ||
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!icd->ops->set_bus_param)
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return -EINVAL;
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for (i = 0; i < 256 && num < 0; i++) {
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@ -953,7 +963,9 @@ int soc_camera_device_register(struct soc_camera_device *icd)
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icd->dev.bus = &soc_camera_bus_type;
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dev_set_name(&icd->dev, "%u-%u", icd->iface, icd->devnum);
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icd->dev.release = dummy_release;
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icd->dev.release = dummy_release;
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icd->use_count = 0;
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icd->host_priv = NULL;
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return scan_add_device(icd);
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}
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@ -89,9 +89,10 @@ static int soc_camera_platform_try_fmt(struct soc_camera_device *icd,
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struct v4l2_format *f)
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{
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struct soc_camera_platform_info *p = soc_camera_platform_get_info(icd);
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struct v4l2_pix_format *pix = &f->fmt.pix;
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f->fmt.pix.width = p->format.width;
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f->fmt.pix.height = p->format.height;
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pix->width = p->format.width;
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pix->height = p->format.height;
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return 0;
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}
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