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path: root/drivers/media/video
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Diffstat (limited to 'drivers/media/video')
-rw-r--r--drivers/media/video/pxa_camera.c207
1 files changed, 165 insertions, 42 deletions
diff --git a/drivers/media/video/pxa_camera.c b/drivers/media/video/pxa_camera.c
index 665eef236f5..97923e1bd06 100644
--- a/drivers/media/video/pxa_camera.c
+++ b/drivers/media/video/pxa_camera.c
@@ -765,6 +765,9 @@ static int test_platform_param(struct pxa_camera_dev *pcdev,
if (!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8))
return -EINVAL;
*flags |= SOCAM_DATAWIDTH_8;
+ break;
+ default:
+ return -EINVAL;
}
return 0;
@@ -823,12 +826,10 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
* We fix bit-per-pixel equal to data-width... */
switch (common_flags & SOCAM_DATAWIDTH_MASK) {
case SOCAM_DATAWIDTH_10:
- icd->buswidth = 10;
dw = 4;
bpp = 0x40;
break;
case SOCAM_DATAWIDTH_9:
- icd->buswidth = 9;
dw = 3;
bpp = 0x20;
break;
@@ -836,7 +837,6 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
/* Actually it can only be 8 now,
* default is just to silence compiler warnings */
case SOCAM_DATAWIDTH_8:
- icd->buswidth = 8;
dw = 2;
bpp = 0;
}
@@ -862,7 +862,17 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
case V4L2_PIX_FMT_YUV422P:
pcdev->channels = 3;
cicr1 |= CICR1_YCBCR_F;
+ /*
+ * Normally, pxa bus wants as input UYVY format. We allow all
+ * reorderings of the YUV422 format, as no processing is done,
+ * and the YUV stream is just passed through without any
+ * transformation. Note that UYVY is the only format that
+ * should be used if pxa framebuffer Overlay2 is used.
+ */
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_YVYU:
cicr1 |= CICR1_COLOR_SP_VAL(2);
break;
case V4L2_PIX_FMT_RGB555:
@@ -888,13 +898,14 @@ static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
return 0;
}
-static int pxa_camera_try_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
+static int pxa_camera_try_bus_param(struct soc_camera_device *icd,
+ unsigned char buswidth)
{
struct soc_camera_host *ici =
to_soc_camera_host(icd->dev.parent);
struct pxa_camera_dev *pcdev = ici->priv;
unsigned long bus_flags, camera_flags;
- int ret = test_platform_param(pcdev, icd->buswidth, &bus_flags);
+ int ret = test_platform_param(pcdev, buswidth, &bus_flags);
if (ret < 0)
return ret;
@@ -904,25 +915,139 @@ static int pxa_camera_try_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
return soc_camera_bus_param_compatible(camera_flags, bus_flags) ? 0 : -EINVAL;
}
+static const struct soc_camera_data_format pxa_camera_formats[] = {
+ {
+ .name = "Planar YUV422 16 bit",
+ .depth = 16,
+ .fourcc = V4L2_PIX_FMT_YUV422P,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+};
+
+static bool buswidth_supported(struct soc_camera_device *icd, int depth)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct pxa_camera_dev *pcdev = ici->priv;
+
+ switch (depth) {
+ case 8:
+ return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8);
+ case 9:
+ return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_9);
+ case 10:
+ return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10);
+ }
+ return false;
+}
+
+static int required_buswidth(const struct soc_camera_data_format *fmt)
+{
+ switch (fmt->fourcc) {
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_YVYU:
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB555:
+ return 8;
+ default:
+ return fmt->depth;
+ }
+}
+
+static int pxa_camera_get_formats(struct soc_camera_device *icd, int idx,
+ struct soc_camera_format_xlate *xlate)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ int formats = 0, buswidth, ret;
+
+ buswidth = required_buswidth(icd->formats + idx);
+
+ if (!buswidth_supported(icd, buswidth))
+ return 0;
+
+ ret = pxa_camera_try_bus_param(icd, buswidth);
+ if (ret < 0)
+ return 0;
+
+ switch (icd->formats[idx].fourcc) {
+ case V4L2_PIX_FMT_UYVY:
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = &pxa_camera_formats[0];
+ xlate->cam_fmt = icd->formats + idx;
+ xlate->buswidth = buswidth;
+ xlate++;
+ dev_dbg(&ici->dev, "Providing format %s using %s\n",
+ pxa_camera_formats[0].name,
+ icd->formats[idx].name);
+ }
+ case V4L2_PIX_FMT_VYUY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_YVYU:
+ case V4L2_PIX_FMT_RGB565:
+ case V4L2_PIX_FMT_RGB555:
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = icd->formats + idx;
+ xlate->cam_fmt = icd->formats + idx;
+ xlate->buswidth = buswidth;
+ xlate++;
+ dev_dbg(&ici->dev, "Providing format %s packed\n",
+ icd->formats[idx].name);
+ }
+ break;
+ default:
+ /* Generic pass-through */
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = icd->formats + idx;
+ xlate->cam_fmt = icd->formats + idx;
+ xlate->buswidth = icd->formats[idx].depth;
+ xlate++;
+ dev_dbg(&ici->dev,
+ "Providing format %s in pass-through mode\n",
+ icd->formats[idx].name);
+ }
+ }
+
+ return formats;
+}
+
static int pxa_camera_set_fmt(struct soc_camera_device *icd,
__u32 pixfmt, struct v4l2_rect *rect)
{
- const struct soc_camera_data_format *cam_fmt;
- int ret;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ const struct soc_camera_data_format *host_fmt, *cam_fmt = NULL;
+ const struct soc_camera_format_xlate *xlate;
+ int ret, buswidth;
- /*
- * TODO: find a suitable supported by the SoC output format, check
- * whether the sensor supports one of acceptable input formats.
- */
- if (pixfmt) {
- cam_fmt = soc_camera_format_by_fourcc(icd, pixfmt);
- if (!cam_fmt)
- return -EINVAL;
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ dev_warn(&ici->dev, "Format %x not found\n", pixfmt);
+ return -EINVAL;
}
- ret = icd->ops->set_fmt(icd, pixfmt, rect);
- if (pixfmt && !ret)
- icd->current_fmt = cam_fmt;
+ buswidth = xlate->buswidth;
+ host_fmt = xlate->host_fmt;
+ cam_fmt = xlate->cam_fmt;
+
+ switch (pixfmt) {
+ case 0: /* Only geometry change */
+ ret = icd->ops->set_fmt(icd, pixfmt, rect);
+ break;
+ default:
+ ret = icd->ops->set_fmt(icd, cam_fmt->fourcc, rect);
+ }
+
+ if (ret < 0)
+ dev_warn(&ici->dev, "Failed to configure for format %x\n",
+ pixfmt);
+
+ if (pixfmt && !ret) {
+ icd->buswidth = buswidth;
+ icd->current_fmt = host_fmt;
+ }
return ret;
}
@@ -930,34 +1055,31 @@ static int pxa_camera_set_fmt(struct soc_camera_device *icd,
static int pxa_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_format *f)
{
- const struct soc_camera_data_format *cam_fmt;
- int ret = pxa_camera_try_bus_param(icd, f->fmt.pix.pixelformat);
-
- if (ret < 0)
- return ret;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ const struct soc_camera_format_xlate *xlate;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ __u32 pixfmt = pix->pixelformat;
- /*
- * TODO: find a suitable supported by the SoC output format, check
- * whether the sensor supports one of acceptable input formats.
- */
- cam_fmt = soc_camera_format_by_fourcc(icd, f->fmt.pix.pixelformat);
- if (!cam_fmt)
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ dev_warn(&ici->dev, "Format %x not found\n", pixfmt);
return -EINVAL;
+ }
/* limit to pxa hardware capabilities */
- if (f->fmt.pix.height < 32)
- f->fmt.pix.height = 32;
- if (f->fmt.pix.height > 2048)
- f->fmt.pix.height = 2048;
- if (f->fmt.pix.width < 48)
- f->fmt.pix.width = 48;
- if (f->fmt.pix.width > 2048)
- f->fmt.pix.width = 2048;
- f->fmt.pix.width &= ~0x01;
-
- f->fmt.pix.bytesperline = f->fmt.pix.width *
- DIV_ROUND_UP(cam_fmt->depth, 8);
- f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+ if (pix->height < 32)
+ pix->height = 32;
+ if (pix->height > 2048)
+ pix->height = 2048;
+ if (pix->width < 48)
+ pix->width = 48;
+ if (pix->width > 2048)
+ pix->width = 2048;
+ pix->width &= ~0x01;
+
+ pix->bytesperline = pix->width *
+ DIV_ROUND_UP(xlate->host_fmt->depth, 8);
+ pix->sizeimage = pix->height * pix->bytesperline;
/* limit to sensor capabilities */
return icd->ops->try_fmt(icd, f);
@@ -1068,6 +1190,7 @@ static struct soc_camera_host_ops pxa_soc_camera_host_ops = {
.remove = pxa_camera_remove_device,
.suspend = pxa_camera_suspend,
.resume = pxa_camera_resume,
+ .get_formats = pxa_camera_get_formats,
.set_fmt = pxa_camera_set_fmt,
.try_fmt = pxa_camera_try_fmt,
.init_videobuf = pxa_camera_init_videobuf,
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 14:08:11 +0000