unsigned long platform_flags;
unsigned long mclk;
+ u16 width_flags; /* max 15 bits */
struct list_head capture;
spinlock_t lock; /* Protects video buffer lists */
struct mx3_camera_buffer *active;
+ size_t buf_total;
struct vb2_alloc_ctx *alloc_ctx;
enum v4l2_field field;
int sequence;
* Calculate the __buffer__ (not data) size and number of buffers.
*/
static int mx3_videobuf_setup(struct vb2_queue *vq,
+ const struct v4l2_format *fmt,
unsigned int *count, unsigned int *num_planes,
unsigned int sizes[], void *alloc_ctxs[])
{
struct soc_camera_device *icd = soc_camera_from_vb2q(vq);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
- 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;
+ int bytes_per_line;
+ unsigned int height;
if (!mx3_cam->idmac_channel[0])
return -EINVAL;
- *num_planes = 1;
-
- mx3_cam->sequence = 0;
- sizes[0] = bytes_per_line * icd->user_height;
- alloc_ctxs[0] = mx3_cam->alloc_ctx;
-
- if (!*count)
- *count = 32;
-
- if (sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024)
- *count = MAX_VIDEO_MEM * 1024 * 1024 / sizes[0];
-
- return 0;
-}
-
-static int mx3_videobuf_prepare(struct vb2_buffer *vb)
-{
- struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
- struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
- struct mx3_camera_dev *mx3_cam = ici->priv;
- struct idmac_channel *ichan = mx3_cam->idmac_channel[0];
- struct scatterlist *sg;
- struct mx3_camera_buffer *buf;
- size_t new_size;
- int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ if (fmt) {
+ const struct soc_camera_format_xlate *xlate = soc_camera_xlate_by_fourcc(icd,
+ fmt->fmt.pix.pixelformat);
+ if (!xlate)
+ return -EINVAL;
+ bytes_per_line = soc_mbus_bytes_per_line(fmt->fmt.pix.width,
+ xlate->host_fmt);
+ height = fmt->fmt.pix.height;
+ } else {
+ /* Called from VIDIOC_REQBUFS or in compatibility mode */
+ bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
icd->current_fmt->host_fmt);
-
+ height = icd->user_height;
+ }
if (bytes_per_line < 0)
return bytes_per_line;
- buf = to_mx3_vb(vb);
- sg = &buf->sg;
-
- new_size = bytes_per_line * icd->user_height;
+ sizes[0] = bytes_per_line * height;
- if (vb2_plane_size(vb, 0) < new_size) {
- dev_err(icd->parent, "Buffer too small (%lu < %zu)\n",
- vb2_plane_size(vb, 0), new_size);
- return -ENOBUFS;
- }
+ alloc_ctxs[0] = mx3_cam->alloc_ctx;
- if (buf->state == CSI_BUF_NEEDS_INIT) {
- sg_dma_address(sg) = vb2_dma_contig_plane_dma_addr(vb, 0);
- sg_dma_len(sg) = new_size;
+ if (!vq->num_buffers)
+ mx3_cam->sequence = 0;
- buf->txd = ichan->dma_chan.device->device_prep_slave_sg(
- &ichan->dma_chan, sg, 1, DMA_FROM_DEVICE,
- DMA_PREP_INTERRUPT);
- if (!buf->txd)
- return -EIO;
-
- buf->txd->callback_param = buf->txd;
- buf->txd->callback = mx3_cam_dma_done;
+ if (!*count)
+ *count = 2;
- buf->state = CSI_BUF_PREPARED;
- }
+ /* If *num_planes != 0, we have already verified *count. */
+ if (!*num_planes &&
+ sizes[0] * *count + mx3_cam->buf_total > MAX_VIDEO_MEM * 1024 * 1024)
+ *count = (MAX_VIDEO_MEM * 1024 * 1024 - mx3_cam->buf_total) /
+ sizes[0];
- vb2_set_plane_payload(vb, 0, new_size);
+ *num_planes = 1;
return 0;
}
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
struct mx3_camera_buffer *buf = to_mx3_vb(vb);
- struct dma_async_tx_descriptor *txd = buf->txd;
- struct idmac_channel *ichan = to_idmac_chan(txd->chan);
+ struct scatterlist *sg = &buf->sg;
+ struct dma_async_tx_descriptor *txd;
+ struct idmac_channel *ichan = mx3_cam->idmac_channel[0];
struct idmac_video_param *video = &ichan->params.video;
- dma_cookie_t cookie;
- u32 fourcc = icd->current_fmt->host_fmt->fourcc;
+ const struct soc_mbus_pixelfmt *host_fmt = icd->current_fmt->host_fmt;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, host_fmt);
unsigned long flags;
+ dma_cookie_t cookie;
+ size_t new_size;
+
+ BUG_ON(bytes_per_line <= 0);
+
+ new_size = bytes_per_line * icd->user_height;
+
+ if (vb2_plane_size(vb, 0) < new_size) {
+ dev_err(icd->parent, "Buffer #%d too small (%lu < %zu)\n",
+ vb->v4l2_buf.index, vb2_plane_size(vb, 0), new_size);
+ goto error;
+ }
+
+ if (buf->state == CSI_BUF_NEEDS_INIT) {
+ sg_dma_address(sg) = vb2_dma_contig_plane_dma_addr(vb, 0);
+ sg_dma_len(sg) = new_size;
+
+ txd = ichan->dma_chan.device->device_prep_slave_sg(
+ &ichan->dma_chan, sg, 1, DMA_FROM_DEVICE,
+ DMA_PREP_INTERRUPT);
+ if (!txd)
+ goto error;
+
+ txd->callback_param = txd;
+ txd->callback = mx3_cam_dma_done;
+
+ buf->state = CSI_BUF_PREPARED;
+ buf->txd = txd;
+ } else {
+ txd = buf->txd;
+ }
+
+ vb2_set_plane_payload(vb, 0, new_size);
/* This is the configuration of one sg-element */
- video->out_pixel_fmt = fourcc_to_ipu_pix(fourcc);
+ video->out_pixel_fmt = fourcc_to_ipu_pix(host_fmt->fourcc);
if (video->out_pixel_fmt == IPU_PIX_FMT_GENERIC) {
/*
- * If the IPU DMA channel is configured to transport
- * generic 8-bit data, we have to set up correctly the
- * geometry parameters upon the current pixel format.
- * So, since the DMA horizontal parameters are expressed
- * in bytes not pixels, convert these in the right unit.
+ * If the IPU DMA channel is configured to transfer generic
+ * 8-bit data, we have to set up the geometry parameters
+ * correctly, according to the current pixel format. The DMA
+ * horizontal parameters in this case are expressed in bytes,
+ * not in pixels.
*/
- int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
- icd->current_fmt->host_fmt);
- BUG_ON(bytes_per_line <= 0);
-
video->out_width = bytes_per_line;
video->out_height = icd->user_height;
video->out_stride = bytes_per_line;
mx3_cam->active = NULL;
spin_unlock_irqrestore(&mx3_cam->lock, flags);
+error:
vb2_buffer_done(vb, VB2_BUF_STATE_ERROR);
}
}
spin_unlock_irqrestore(&mx3_cam->lock, flags);
+
+ mx3_cam->buf_total -= vb2_plane_size(vb, 0);
}
static int mx3_videobuf_init(struct vb2_buffer *vb)
{
+ struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
+ struct mx3_camera_dev *mx3_cam = ici->priv;
struct mx3_camera_buffer *buf = to_mx3_vb(vb);
+
/* This is for locking debugging only */
INIT_LIST_HEAD(&buf->queue);
sg_init_table(&buf->sg, 1);
buf->state = CSI_BUF_NEEDS_INIT;
- buf->txd = NULL;
+
+ mx3_cam->buf_total += vb2_plane_size(vb, 0);
return 0;
}
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
struct idmac_channel *ichan = mx3_cam->idmac_channel[0];
- struct dma_chan *chan;
struct mx3_camera_buffer *buf, *tmp;
unsigned long flags;
if (ichan) {
- chan = &ichan->dma_chan;
- chan->device->device_control(chan, DMA_TERMINATE_ALL, 0);
+ struct dma_chan *chan = &ichan->dma_chan;
+ chan->device->device_control(chan, DMA_PAUSE, 0);
}
spin_lock_irqsave(&mx3_cam->lock, flags);
mx3_cam->active = NULL;
list_for_each_entry_safe(buf, tmp, &mx3_cam->capture, queue) {
- buf->state = CSI_BUF_NEEDS_INIT;
list_del_init(&buf->queue);
+ vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR);
}
spin_unlock_irqrestore(&mx3_cam->lock, flags);
static struct vb2_ops mx3_videobuf_ops = {
.queue_setup = mx3_videobuf_setup,
- .buf_prepare = mx3_videobuf_prepare,
.buf_queue = mx3_videobuf_queue,
.buf_cleanup = mx3_videobuf_release,
.buf_init = mx3_videobuf_init,
mx3_camera_activate(mx3_cam, icd);
+ mx3_cam->buf_total = 0;
mx3_cam->icd = icd;
dev_info(icd->parent, "MX3 Camera driver attached to camera %d\n",
static int test_platform_param(struct mx3_camera_dev *mx3_cam,
unsigned char buswidth, unsigned long *flags)
{
+ /*
+ * If requested data width is supported by the platform, use it or any
+ * possible lower value - i.MX31 is smart enough to shift bits
+ */
+ if (buswidth > fls(mx3_cam->width_flags))
+ return -EINVAL;
+
/*
* Platform specified synchronization and pixel clock polarities are
* only a recommendation and are only used during probing. MX3x
* camera interface only works in master mode, i.e., uses HSYNC and
* VSYNC signals from the sensor
*/
- *flags = SOCAM_MASTER |
- SOCAM_HSYNC_ACTIVE_HIGH |
- SOCAM_HSYNC_ACTIVE_LOW |
- SOCAM_VSYNC_ACTIVE_HIGH |
- SOCAM_VSYNC_ACTIVE_LOW |
- SOCAM_PCLK_SAMPLE_RISING |
- SOCAM_PCLK_SAMPLE_FALLING |
- 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 (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 (!(*flags & SOCAM_DATAWIDTH_15))
- return -EINVAL;
- break;
- case 10:
- if (!(*flags & SOCAM_DATAWIDTH_10))
- return -EINVAL;
- break;
- case 8:
- if (!(*flags & SOCAM_DATAWIDTH_8))
- return -EINVAL;
- break;
- case 4:
- if (!(*flags & SOCAM_DATAWIDTH_4))
- return -EINVAL;
- break;
- default:
- dev_warn(mx3_cam->soc_host.v4l2_dev.dev,
- "Unsupported bus width %d\n", buswidth);
- return -EINVAL;
- }
+ *flags = V4L2_MBUS_MASTER |
+ V4L2_MBUS_HSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_HSYNC_ACTIVE_LOW |
+ V4L2_MBUS_VSYNC_ACTIVE_HIGH |
+ V4L2_MBUS_VSYNC_ACTIVE_LOW |
+ V4L2_MBUS_PCLK_SAMPLE_RISING |
+ V4L2_MBUS_PCLK_SAMPLE_FALLING |
+ V4L2_MBUS_DATA_ACTIVE_HIGH |
+ V4L2_MBUS_DATA_ACTIVE_LOW;
return 0;
}
static int mx3_camera_try_bus_param(struct soc_camera_device *icd,
const unsigned int depth)
{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
- unsigned long bus_flags, camera_flags;
+ struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
+ unsigned long bus_flags, common_flags;
int ret = test_platform_param(mx3_cam, depth, &bus_flags);
dev_dbg(icd->parent, "request bus width %d bit: %d\n", depth, ret);
if (ret < 0)
return ret;
- camera_flags = icd->ops->query_bus_param(icd);
-
- ret = soc_camera_bus_param_compatible(camera_flags, bus_flags);
- if (ret < 0)
- dev_warn(icd->parent,
- "Flags incompatible: camera %lx, host %lx\n",
- camera_flags, bus_flags);
+ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
+ if (!ret) {
+ common_flags = soc_mbus_config_compatible(&cfg,
+ bus_flags);
+ if (!common_flags) {
+ dev_warn(icd->parent,
+ "Flags incompatible: camera 0x%x, host 0x%lx\n",
+ cfg.flags, bus_flags);
+ return -EINVAL;
+ }
+ } else if (ret != -ENOIOCTLCMD) {
+ return ret;
+ }
- return ret;
+ return 0;
}
static bool chan_filter(struct dma_chan *chan, void *arg)
static int mx3_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt)
{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
struct mx3_camera_dev *mx3_cam = ici->priv;
- unsigned long bus_flags, camera_flags, common_flags;
+ struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
+ unsigned long bus_flags, common_flags;
u32 dw, sens_conf;
const struct soc_mbus_pixelfmt *fmt;
int buswidth;
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;
}
+ buswidth = fmt->bits_per_sample;
+ ret = test_platform_param(mx3_cam, buswidth, &bus_flags);
+
dev_dbg(dev, "requested bus width %d bit: %d\n", buswidth, ret);
if (ret < 0)
return ret;
- camera_flags = icd->ops->query_bus_param(icd);
-
- common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags);
- dev_dbg(dev, "Flags cam: 0x%lx host: 0x%lx common: 0x%lx\n",
- camera_flags, bus_flags, common_flags);
- if (!common_flags) {
- dev_dbg(dev, "no common flags");
- return -EINVAL;
+ ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
+ if (!ret) {
+ common_flags = soc_mbus_config_compatible(&cfg,
+ bus_flags);
+ if (!common_flags) {
+ dev_warn(icd->parent,
+ "Flags incompatible: camera 0x%x, host 0x%lx\n",
+ cfg.flags, bus_flags);
+ return -EINVAL;
+ }
+ } else if (ret != -ENOIOCTLCMD) {
+ return ret;
+ } else {
+ common_flags = bus_flags;
}
+ dev_dbg(dev, "Flags cam: 0x%x host: 0x%lx common: 0x%lx\n",
+ cfg.flags, bus_flags, common_flags);
+
/* Make choices, based on platform preferences */
- if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) &&
- (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) {
+ if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) &&
+ (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) {
if (mx3_cam->platform_flags & MX3_CAMERA_HSP)
- common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH;
+ common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH;
else
- common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW;
+ common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW;
}
- if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
- (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
+ if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
+ (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
if (mx3_cam->platform_flags & MX3_CAMERA_VSP)
- common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH;
+ common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
else
- common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW;
+ common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
}
- if ((common_flags & SOCAM_DATA_ACTIVE_HIGH) &&
- (common_flags & SOCAM_DATA_ACTIVE_LOW)) {
+ if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) &&
+ (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) {
if (mx3_cam->platform_flags & MX3_CAMERA_DP)
- common_flags &= ~SOCAM_DATA_ACTIVE_HIGH;
+ common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH;
else
- common_flags &= ~SOCAM_DATA_ACTIVE_LOW;
+ common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW;
}
- if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) &&
- (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) {
+ if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) &&
+ (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) {
if (mx3_cam->platform_flags & MX3_CAMERA_PCP)
- common_flags &= ~SOCAM_PCLK_SAMPLE_RISING;
+ common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING;
else
- common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING;
+ common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING;
}
- /*
- * 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;
- else if (common_flags & SOCAM_DATAWIDTH_10)
- common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) |
- SOCAM_DATAWIDTH_10;
- else if (common_flags & SOCAM_DATAWIDTH_8)
- common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) |
- SOCAM_DATAWIDTH_8;
- else
- common_flags = (common_flags & ~SOCAM_DATAWIDTH_MASK) |
- SOCAM_DATAWIDTH_4;
-
- ret = icd->ops->set_bus_param(icd, common_flags);
- if (ret < 0) {
- dev_dbg(dev, "camera set_bus_param(%lx) returned %d\n",
+ cfg.flags = common_flags;
+ ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
+ if (ret < 0 && ret != -ENOIOCTLCMD) {
+ dev_dbg(dev, "camera s_mbus_config(0x%lx) returned %d\n",
common_flags, ret);
return ret;
}
/* This has been set in mx3_camera_activate(), but we clear it above */
sens_conf |= CSI_SENS_CONF_DATA_FMT_BAYER;
- if (common_flags & SOCAM_PCLK_SAMPLE_FALLING)
+ if (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)
sens_conf |= 1 << CSI_SENS_CONF_PIX_CLK_POL_SHIFT;
- if (common_flags & SOCAM_HSYNC_ACTIVE_LOW)
+ if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)
sens_conf |= 1 << CSI_SENS_CONF_HSYNC_POL_SHIFT;
- if (common_flags & SOCAM_VSYNC_ACTIVE_LOW)
+ if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)
sens_conf |= 1 << CSI_SENS_CONF_VSYNC_POL_SHIFT;
- if (common_flags & SOCAM_DATA_ACTIVE_LOW)
+ if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)
sens_conf |= 1 << CSI_SENS_CONF_DATA_POL_SHIFT;
/* Just do what we're asked to do */
"data widths, using default 8 bit\n");
mx3_cam->platform_flags |= MX3_CAMERA_DATAWIDTH_8;
}
+ if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_4)
+ mx3_cam->width_flags = 1 << 3;
+ if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_8)
+ mx3_cam->width_flags |= 1 << 7;
+ if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_10)
+ mx3_cam->width_flags |= 1 << 9;
+ if (mx3_cam->platform_flags & MX3_CAMERA_DATAWIDTH_15)
+ mx3_cam->width_flags |= 1 << 14;
mx3_cam->mclk = mx3_cam->pdata->mclk_10khz * 10000;
if (!mx3_cam->mclk) {
dmaengine_put();
- dev_info(&pdev->dev, "i.MX3x Camera driver unloaded\n");
-
return 0;
}
git.openpandora.org / pandora-kernel.git / blobdiff