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path: root/drivers/media/video/mx3_camera.c
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Diffstat (limited to 'drivers/media/video/mx3_camera.c')
-rw-r--r--drivers/media/video/mx3_camera.c296
1 files changed, 173 insertions, 123 deletions
diff --git a/drivers/media/video/mx3_camera.c b/drivers/media/video/mx3_camera.c
index 7db82bdf6f3..bd297f567dc 100644
--- a/drivers/media/video/mx3_camera.c
+++ b/drivers/media/video/mx3_camera.c
@@ -23,6 +23,7 @@
#include <media/v4l2-dev.h>
#include <media/videobuf-dma-contig.h>
#include <media/soc_camera.h>
+#include <media/soc_mediabus.h>
#include <mach/ipu.h>
#include <mach/mx3_camera.h>
@@ -63,7 +64,7 @@
struct mx3_camera_buffer {
/* common v4l buffer stuff -- must be first */
struct videobuf_buffer vb;
- const struct soc_camera_data_format *fmt;
+ enum v4l2_mbus_pixelcode code;
/* One descriptot per scatterlist (per frame) */
struct dma_async_tx_descriptor *txd;
@@ -118,8 +119,6 @@ struct dma_chan_request {
enum ipu_channel id;
};
-static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt);
-
static u32 csi_reg_read(struct mx3_camera_dev *mx3, off_t reg)
{
return __raw_readl(mx3->base + reg);
@@ -211,17 +210,16 @@ static int mx3_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
struct soc_camera_device *icd = vq->priv_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
- /*
- * bits-per-pixel (depth) as specified in camera's pixel format does
- * not necessarily match what the camera interface writes to RAM, but
- * it should be good enough for now.
- */
- unsigned int bpp = DIV_ROUND_UP(icd->current_fmt->depth, 8);
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+
+ if (bytes_per_line < 0)
+ return bytes_per_line;
if (!mx3_cam->idmac_channel[0])
return -EINVAL;
- *size = icd->user_width * icd->user_height * bpp;
+ *size = bytes_per_line * icd->user_height;
if (!*count)
*count = 32;
@@ -241,21 +239,26 @@ static int mx3_videobuf_prepare(struct videobuf_queue *vq,
struct mx3_camera_dev *mx3_cam = ici->priv;
struct mx3_camera_buffer *buf =
container_of(vb, struct mx3_camera_buffer, vb);
- /* current_fmt _must_ always be set */
- size_t new_size = icd->user_width * icd->user_height *
- ((icd->current_fmt->depth + 7) >> 3);
+ size_t new_size;
int ret;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
+ new_size = bytes_per_line * icd->user_height;
/*
* I think, in buf_prepare you only have to protect global data,
* the actual buffer is yours
*/
- if (buf->fmt != icd->current_fmt ||
+ if (buf->code != icd->current_fmt->code ||
vb->width != icd->user_width ||
vb->height != icd->user_height ||
vb->field != field) {
- buf->fmt = icd->current_fmt;
+ buf->code = icd->current_fmt->code;
vb->width = icd->user_width;
vb->height = icd->user_height;
vb->field = field;
@@ -348,13 +351,13 @@ static void mx3_videobuf_queue(struct videobuf_queue *vq,
struct dma_async_tx_descriptor *txd = buf->txd;
struct idmac_channel *ichan = to_idmac_chan(txd->chan);
struct idmac_video_param *video = &ichan->params.video;
- const struct soc_camera_data_format *data_fmt = icd->current_fmt;
dma_cookie_t cookie;
+ u32 fourcc = icd->current_fmt->host_fmt->fourcc;
BUG_ON(!irqs_disabled());
/* This is the configuration of one sg-element */
- video->out_pixel_fmt = fourcc_to_ipu_pix(data_fmt->fourcc);
+ video->out_pixel_fmt = fourcc_to_ipu_pix(fourcc);
video->out_width = icd->user_width;
video->out_height = icd->user_height;
video->out_stride = icd->user_width;
@@ -564,30 +567,37 @@ static int test_platform_param(struct mx3_camera_dev *mx3_cam,
SOCAM_DATA_ACTIVE_HIGH |
SOCAM_DATA_ACTIVE_LOW;
- /* If requested data width is supported by the platform, use it or any
- * possible lower value - i.MX31 is smart enough to schift bits */
+ /*
+ * If requested data width is supported by the platform, use it or any
+ * possible lower value - i.MX31 is smart enough to schift bits
+ */
+ if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15)
+ *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 |
+ SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4;
+ else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10)
+ *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 |
+ SOCAM_DATAWIDTH_4;
+ else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8)
+ *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4;
+ else if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)
+ *flags |= SOCAM_DATAWIDTH_4;
+
switch (buswidth) {
case 15:
- if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15))
+ if (!(*flags & SOCAM_DATAWIDTH_15))
return -EINVAL;
- *flags |= SOCAM_DATAWIDTH_15 | SOCAM_DATAWIDTH_10 |
- SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4;
break;
case 10:
- if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10))
+ if (!(*flags & SOCAM_DATAWIDTH_10))
return -EINVAL;
- *flags |= SOCAM_DATAWIDTH_10 | SOCAM_DATAWIDTH_8 |
- SOCAM_DATAWIDTH_4;
break;
case 8:
- if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8))
+ if (!(*flags & SOCAM_DATAWIDTH_8))
return -EINVAL;
- *flags |= SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_4;
break;
case 4:
- if (!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4))
+ if (!(*flags & SOCAM_DATAWIDTH_4))
return -EINVAL;
- *flags |= SOCAM_DATAWIDTH_4;
break;
default:
dev_warn(mx3_cam->soc_host.v4l2_dev.dev,
@@ -636,91 +646,92 @@ static bool chan_filter(struct dma_chan *chan, void *arg)
pdata->dma_dev == chan->device->dev;
}
-static const struct soc_camera_data_format mx3_camera_formats[] = {
+static const struct soc_mbus_pixelfmt mx3_camera_formats[] = {
{
- .name = "Bayer (sRGB) 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_SBGGR8,
- .colorspace = V4L2_COLORSPACE_SRGB,
+ .fourcc = V4L2_PIX_FMT_SBGGR8,
+ .name = "Bayer BGGR (sRGB) 8 bit",
+ .bits_per_sample = 8,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
}, {
- .name = "Monochrome 8 bit",
- .depth = 8,
- .fourcc = V4L2_PIX_FMT_GREY,
- .colorspace = V4L2_COLORSPACE_JPEG,
+ .fourcc = V4L2_PIX_FMT_GREY,
+ .name = "Monochrome 8 bit",
+ .bits_per_sample = 8,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
},
};
-static bool buswidth_supported(struct soc_camera_host *ici, int depth)
+/* This will be corrected as we get more formats */
+static bool mx3_camera_packing_supported(const struct soc_mbus_pixelfmt *fmt)
{
- struct mx3_camera_dev *mx3_cam = ici->priv;
-
- switch (depth) {
- case 4:
- return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4);
- case 8:
- return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8);
- case 10:
- return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10);
- case 15:
- return !!(mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15);
- }
- return false;
+ return fmt->packing == SOC_MBUS_PACKING_NONE ||
+ (fmt->bits_per_sample == 8 &&
+ fmt->packing == SOC_MBUS_PACKING_2X8_PADHI) ||
+ (fmt->bits_per_sample > 8 &&
+ fmt->packing == SOC_MBUS_PACKING_EXTEND16);
}
static int mx3_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;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->dev.parent;
+ int formats = 0, ret;
+ enum v4l2_mbus_pixelcode code;
+ const struct soc_mbus_pixelfmt *fmt;
- buswidth = icd->formats[idx].depth;
+ ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
+ if (ret < 0)
+ /* No more formats */
+ return 0;
- if (!buswidth_supported(ici, buswidth))
+ fmt = soc_mbus_get_fmtdesc(code);
+ if (!fmt) {
+ dev_err(icd->dev.parent,
+ "Invalid format code #%d: %d\n", idx, code);
return 0;
+ }
- ret = mx3_camera_try_bus_param(icd, buswidth);
+ /* This also checks support for the requested bits-per-sample */
+ ret = mx3_camera_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0)
return 0;
- switch (icd->formats[idx].fourcc) {
- case V4L2_PIX_FMT_SGRBG10:
+ switch (code) {
+ case V4L2_MBUS_FMT_SBGGR10_1X10:
formats++;
if (xlate) {
- xlate->host_fmt = &mx3_camera_formats[0];
- xlate->cam_fmt = icd->formats + idx;
- xlate->buswidth = buswidth;
+ xlate->host_fmt = &mx3_camera_formats[0];
+ xlate->code = code;
xlate++;
- dev_dbg(icd->dev.parent,
- "Providing format %s using %s\n",
- mx3_camera_formats[0].name,
- icd->formats[idx].name);
+ dev_dbg(dev, "Providing format %s using code %d\n",
+ mx3_camera_formats[0].name, code);
}
- goto passthrough;
- case V4L2_PIX_FMT_Y16:
+ break;
+ case V4L2_MBUS_FMT_Y10_1X10:
formats++;
if (xlate) {
- xlate->host_fmt = &mx3_camera_formats[1];
- xlate->cam_fmt = icd->formats + idx;
- xlate->buswidth = buswidth;
+ xlate->host_fmt = &mx3_camera_formats[1];
+ xlate->code = code;
xlate++;
- dev_dbg(icd->dev.parent,
- "Providing format %s using %s\n",
- mx3_camera_formats[0].name,
- icd->formats[idx].name);
+ dev_dbg(dev, "Providing format %s using code %d\n",
+ mx3_camera_formats[1].name, code);
}
+ break;
default:
-passthrough:
- /* Generic pass-through */
- formats++;
- if (xlate) {
- xlate->host_fmt = icd->formats + idx;
- xlate->cam_fmt = icd->formats + idx;
- xlate->buswidth = buswidth;
- xlate++;
- dev_dbg(icd->dev.parent,
- "Providing format %s in pass-through mode\n",
- icd->formats[idx].name);
- }
+ if (!mx3_camera_packing_supported(fmt))
+ return 0;
+ }
+
+ /* Generic pass-through */
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = fmt;
+ xlate->code = code;
+ xlate++;
+ dev_dbg(dev, "Providing format %x in pass-through mode\n",
+ xlate->host_fmt->fourcc);
}
return formats;
@@ -804,8 +815,7 @@ static int mx3_camera_set_crop(struct soc_camera_device *icd,
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
- struct v4l2_format f = {.type = V4L2_BUF_TYPE_VIDEO_CAPTURE};
- struct v4l2_pix_format *pix = &f.fmt.pix;
+ struct v4l2_mbus_framefmt mf;
int ret;
soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096);
@@ -816,19 +826,19 @@ static int mx3_camera_set_crop(struct soc_camera_device *icd,
return ret;
/* The capture device might have changed its output */
- ret = v4l2_subdev_call(sd, video, g_fmt, &f);
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
if (ret < 0)
return ret;
- if (pix->width & 7) {
+ if (mf.width & 7) {
/* Ouch! We can only handle 8-byte aligned width... */
- stride_align(&pix->width);
- ret = v4l2_subdev_call(sd, video, s_fmt, &f);
+ stride_align(&mf.width);
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
if (ret < 0)
return ret;
}
- if (pix->width != icd->user_width || pix->height != icd->user_height) {
+ if (mf.width != icd->user_width || mf.height != icd->user_height) {
/*
* We now know pixel formats and can decide upon DMA-channel(s)
* So far only direct camera-to-memory is supported
@@ -839,14 +849,14 @@ static int mx3_camera_set_crop(struct soc_camera_device *icd,
return ret;
}
- configure_geometry(mx3_cam, pix->width, pix->height);
+ configure_geometry(mx3_cam, mf.width, mf.height);
}
dev_dbg(icd->dev.parent, "Sensor cropped %dx%d\n",
- pix->width, pix->height);
+ mf.width, mf.height);
- icd->user_width = pix->width;
- icd->user_height = pix->height;
+ icd->user_width = mf.width;
+ icd->user_height = mf.height;
return ret;
}
@@ -859,6 +869,7 @@ static int mx3_camera_set_fmt(struct soc_camera_device *icd,
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_mbus_framefmt mf;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
@@ -883,11 +894,24 @@ static int mx3_camera_set_fmt(struct soc_camera_device *icd,
configure_geometry(mx3_cam, pix->width, pix->height);
- ret = v4l2_subdev_call(sd, video, s_fmt, f);
- if (!ret) {
- icd->buswidth = xlate->buswidth;
- icd->current_fmt = xlate->host_fmt;
- }
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = pix->field;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ if (mf.code != xlate->code)
+ return -EINVAL;
+
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->field = mf.field;
+ pix->colorspace = mf.colorspace;
+ icd->current_fmt = xlate;
dev_dbg(icd->dev.parent, "Sensor set %dx%d\n", pix->width, pix->height);
@@ -900,8 +924,8 @@ static int mx3_camera_try_fmt(struct soc_camera_device *icd,
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_mbus_framefmt mf;
__u32 pixfmt = pix->pixelformat;
- enum v4l2_field field;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
@@ -916,23 +940,37 @@ static int mx3_camera_try_fmt(struct soc_camera_device *icd,
if (pix->width > 4096)
pix->width = 4096;
- pix->bytesperline = pix->width *
- DIV_ROUND_UP(xlate->host_fmt->depth, 8);
+ pix->bytesperline = soc_mbus_bytes_per_line(pix->width,
+ xlate->host_fmt);
+ if (pix->bytesperline < 0)
+ return pix->bytesperline;
pix->sizeimage = pix->height * pix->bytesperline;
- /* camera has to see its format, but the user the original one */
- pix->pixelformat = xlate->cam_fmt->fourcc;
/* limit to sensor capabilities */
- ret = v4l2_subdev_call(sd, video, try_fmt, f);
- pix->pixelformat = xlate->host_fmt->fourcc;
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = pix->field;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
+ ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
- field = pix->field;
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->colorspace = mf.colorspace;
- if (field == V4L2_FIELD_ANY) {
+ switch (mf.field) {
+ case V4L2_FIELD_ANY:
pix->field = V4L2_FIELD_NONE;
- } else if (field != V4L2_FIELD_NONE) {
- dev_err(icd->dev.parent, "Field type %d unsupported.\n", field);
- return -EINVAL;
+ break;
+ case V4L2_FIELD_NONE:
+ break;
+ default:
+ dev_err(icd->dev.parent, "Field type %d unsupported.\n",
+ mf.field);
+ ret = -EINVAL;
}
return ret;
@@ -968,18 +1006,26 @@ static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
struct mx3_camera_dev *mx3_cam = ici->priv;
unsigned long bus_flags, camera_flags, common_flags;
u32 dw, sens_conf;
- int ret = test_platform_param(mx3_cam, icd->buswidth, &bus_flags);
+ const struct soc_mbus_pixelfmt *fmt;
+ int buswidth;
+ int ret;
const struct soc_camera_format_xlate *xlate;
struct device *dev = icd->dev.parent;
+ fmt = soc_mbus_get_fmtdesc(icd->current_fmt->code);
+ if (!fmt)
+ return -EINVAL;
+
+ buswidth = fmt->bits_per_sample;
+ ret = test_platform_param(mx3_cam, buswidth, &bus_flags);
+
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
dev_warn(dev, "Format %x not found\n", pixfmt);
return -EINVAL;
}
- dev_dbg(dev, "requested bus width %d bit: %d\n",
- icd->buswidth, ret);
+ dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret);
if (ret < 0)
return ret;
@@ -1027,8 +1073,10 @@ static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING;
}
- /* Make the camera work in widest common mode, we'll take care of
- * the rest */
+ /*
+ * Make the camera work in widest common mode, we'll take care of
+ * the rest
+ */
if (common_flags & SOCAM_DATAWIDTH_15)
common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) |
SOCAM_DATAWIDTH_15;
@@ -1078,7 +1126,7 @@ static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT;
/* Just do what we're asked to do */
- switch (xlate->host_fmt->depth) {
+ switch (xlate->host_fmt->bits_per_sample) {
case 4:
dw = 0 << CSI_SENS_CONF_DATA_WIDTH_SHIFT;
break;
@@ -1152,8 +1200,10 @@ static int __devinit mx3_camera_probe(struct platform_device *pdev)
if (!(mx3_cam->platform_flags & (MX3_CAMERA_DATAWIDTH_4 |
MX3_CAMERA_DATAWIDTH_8 | MX3_CAMERA_DATAWIDTH_10 |
MX3_CAMERA_DATAWIDTH_15))) {
- /* Platform hasn't set available data widths. This is bad.
- * Warn and use a default. */
+ /*
+ * Platform hasn't set available data widths. This is bad.
+ * Warn and use a default.
+ */
dev_warn(&pdev->dev, "WARNING! Platform hasn't set available "
"data widths, using default 8 bit\n");
mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 18:32:43 +0000