#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
+#include <linux/sched.h>
+#include <linux/slab.h>
#include <linux/time.h>
#include <linux/version.h>
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/videobuf-dma-contig.h>
+#include <media/soc_mediabus.h>
#include <asm/dma.h>
#include <asm/fiq.h>
/*
* CSI registers
*/
-#define DMA_CCR(x) (0x8c + ((x) << 6)) /* Control Registers */
-#define DMA_DIMR 0x08 /* Interrupt mask Register */
#define CSICR1 0x00 /* CSI Control Register 1 */
#define CSISR 0x08 /* CSI Status Register */
#define CSIRXR 0x10 /* CSI RxFIFO Register */
/* buffer for one video frame */
struct mx1_buffer {
/* common v4l buffer stuff -- must be first */
- struct videobuf_buffer vb;
- const struct soc_camera_data_format *fmt;
- int inwork;
+ struct videobuf_buffer vb;
+ enum v4l2_mbus_pixelcode code;
+ int inwork;
};
-/* i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor
+/*
+ * i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor
* Interface. If anyone ever builds hardware to enable more than
- * one camera, they will have to modify this driver too */
+ * one camera, they will have to modify this driver too
+ */
struct mx1_camera_dev {
struct soc_camera_host soc_host;
struct soc_camera_device *icd;
unsigned int *size)
{
struct soc_camera_device *icd = vq->priv_data;
+ 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;
- *size = icd->rect_current.width * icd->rect_current.height *
- ((icd->current_fmt->depth + 7) >> 3);
+ *size = bytes_per_line * icd->user_height;
if (!*count)
*count = 32;
- while (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
- (*count)--;
+ if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
+ *count = (MAX_VIDEO_MEM * 1024 * 1024) / *size;
- dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size);
+ dev_dbg(icd->dev.parent, "count=%d, size=%d\n", *count, *size);
return 0;
}
BUG_ON(in_interrupt());
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
- /* This waits until this buffer is out of danger, i.e., until it is no
- * longer in STATE_QUEUED or STATE_ACTIVE */
+ /*
+ * This waits until this buffer is out of danger, i.e., until it is no
+ * longer in STATE_QUEUED or STATE_ACTIVE
+ */
videobuf_waiton(vb, 0, 0);
videobuf_dma_contig_free(vq, vb);
struct soc_camera_device *icd = vq->priv_data;
struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
int ret;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
+ dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
/* Added list head initialization on alloc */
BUG_ON(NULL == icd->current_fmt);
- /* I think, in buf_prepare you only have to protect global data,
- * the actual buffer is yours */
+ /*
+ * I think, in buf_prepare you only have to protect global data,
+ * the actual buffer is yours
+ */
buf->inwork = 1;
- if (buf->fmt != icd->current_fmt ||
- vb->width != icd->rect_current.width ||
- vb->height != icd->rect_current.height ||
+ 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;
- vb->width = icd->rect_current.width;
- vb->height = icd->rect_current.height;
+ buf->code = icd->current_fmt->code;
+ vb->width = icd->user_width;
+ vb->height = icd->user_height;
vb->field = field;
vb->state = VIDEOBUF_NEEDS_INIT;
}
- vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3);
+ vb->size = bytes_per_line * vb->height;
if (0 != vb->baddr && vb->bsize < vb->size) {
ret = -EINVAL;
goto out;
static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev)
{
struct videobuf_buffer *vbuf = &pcdev->active->vb;
+ struct device *dev = pcdev->icd->dev.parent;
int ret;
if (unlikely(!pcdev->active)) {
- dev_err(pcdev->icd->dev.parent, "DMA End IRQ with no active buffer\n");
+ dev_err(dev, "DMA End IRQ with no active buffer\n");
return -EFAULT;
}
vbuf->size, pcdev->res->start +
CSIRXR, DMA_MODE_READ);
if (unlikely(ret))
- dev_err(pcdev->icd->dev.parent, "Failed to setup DMA sg list\n");
+ dev_err(dev, "Failed to setup DMA sg list\n");
return ret;
}
struct mx1_camera_dev *pcdev = ici->priv;
struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
list_add_tail(&vb->queue, &pcdev->capture);
struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
#ifdef DEBUG
struct soc_camera_device *icd = vq->priv_data;
+ struct device *dev = icd->dev.parent;
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
switch (vb->state) {
case VIDEOBUF_ACTIVE:
- dev_dbg(&icd->dev, "%s (active)\n", __func__);
+ dev_dbg(dev, "%s (active)\n", __func__);
break;
case VIDEOBUF_QUEUED:
- dev_dbg(&icd->dev, "%s (queued)\n", __func__);
+ dev_dbg(dev, "%s (queued)\n", __func__);
break;
case VIDEOBUF_PREPARED:
- dev_dbg(&icd->dev, "%s (prepared)\n", __func__);
+ dev_dbg(dev, "%s (prepared)\n", __func__);
break;
default:
- dev_dbg(&icd->dev, "%s (unknown)\n", __func__);
+ dev_dbg(dev, "%s (unknown)\n", __func__);
break;
}
#endif
static void mx1_camera_dma_irq(int channel, void *data)
{
struct mx1_camera_dev *pcdev = data;
+ struct device *dev = pcdev->icd->dev.parent;
struct mx1_buffer *buf;
struct videobuf_buffer *vb;
unsigned long flags;
imx_dma_disable(channel);
if (unlikely(!pcdev->active)) {
- dev_err(pcdev->icd->dev.parent, "DMA End IRQ with no active buffer\n");
+ dev_err(dev, "DMA End IRQ with no active buffer\n");
goto out;
}
vb = &pcdev->active->vb;
buf = container_of(vb, struct mx1_buffer, vb);
WARN_ON(buf->inwork || list_empty(&vb->queue));
- dev_dbg(pcdev->icd->dev.parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
+ dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
vb, vb->baddr, vb->bsize);
mx1_camera_wakeup(pcdev, vb, buf);
lcdclk = clk_get_rate(pcdev->clk);
- /* We verify platform_mclk_10khz != 0, so if anyone breaks it, here
- * they get a nice Oops */
+ /*
+ * We verify platform_mclk_10khz != 0, so if anyone breaks it, here
+ * they get a nice Oops
+ */
div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
- dev_dbg(pcdev->icd->dev.parent, "System clock %lukHz, target freq %dkHz, "
- "divisor %lu\n", lcdclk / 1000, mclk / 1000, div);
+ dev_dbg(pcdev->icd->dev.parent,
+ "System clock %lukHz, target freq %dkHz, divisor %lu\n",
+ lcdclk / 1000, mclk / 1000, div);
return div;
}
clk_disable(pcdev->clk);
}
-/* The following two functions absolutely depend on the fact, that
- * there can be only one camera on i.MX1/i.MXL camera sensor interface */
+/*
+ * The following two functions absolutely depend on the fact, that
+ * there can be only one camera on i.MX1/i.MXL camera sensor interface
+ */
static int mx1_camera_add_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
goto ebusy;
}
- dev_info(&icd->dev, "MX1 Camera driver attached to camera %d\n",
+ dev_info(icd->dev.parent, "MX1 Camera driver attached to camera %d\n",
icd->devnum);
mx1_camera_activate(pcdev);
/* Stop DMA engine */
imx_dma_disable(pcdev->dma_chan);
- dev_info(&icd->dev, "MX1 Camera driver detached from camera %d\n",
+ dev_info(icd->dev.parent, "MX1 Camera driver detached from camera %d\n",
icd->devnum);
mx1_camera_deactivate(pcdev);
/* MX1 supports only 8bit buswidth */
common_flags = soc_camera_bus_param_compatible(camera_flags,
- CSI_BUS_FLAGS);
+ CSI_BUS_FLAGS);
if (!common_flags)
return -EINVAL;
- icd->buswidth = 8;
-
/* Make choises, based on platform choice */
if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
(common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
const struct soc_camera_format_xlate *xlate;
struct v4l2_pix_format *pix = &f->fmt.pix;
- int ret;
+ struct v4l2_mbus_framefmt mf;
+ int ret, buswidth;
xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
if (!xlate) {
- dev_warn(icd->dev.parent, "Format %x not found\n", pix->pixelformat);
+ dev_warn(icd->dev.parent, "Format %x not found\n",
+ pix->pixelformat);
return -EINVAL;
}
- ret = v4l2_subdev_call(sd, video, s_fmt, f);
- if (!ret) {
- icd->buswidth = xlate->buswidth;
- icd->current_fmt = xlate->host_fmt;
+ buswidth = xlate->host_fmt->bits_per_sample;
+ if (buswidth > 8) {
+ dev_warn(icd->dev.parent,
+ "bits-per-sample %d for format %x unsupported\n",
+ buswidth, pix->pixelformat);
+ return -EINVAL;
}
+ 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;
+
return ret;
}
struct v4l2_format *f)
{
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;
/* TODO: limit to mx1 hardware capabilities */
+ xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
+ if (!xlate) {
+ dev_warn(icd->dev.parent, "Format %x not found\n",
+ pix->pixelformat);
+ return -EINVAL;
+ }
+
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = pix->field;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
+
/* limit to sensor capabilities */
- return v4l2_subdev_call(sd, video, try_fmt, f);
+ ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->field = mf.field;
+ pix->colorspace = mf.colorspace;
+
+ return 0;
}
static int mx1_camera_reqbufs(struct soc_camera_file *icf,
{
int i;
- /* This is for locking debugging only. I removed spinlocks and now I
+ /*
+ * This is for locking debugging only. I removed spinlocks and now I
* check whether .prepare is ever called on a linked buffer, or whether
* a dma IRQ can occur for an in-work or unlinked buffer. Until now
- * it hadn't triggered */
+ * it hadn't triggered
+ */
for (i = 0; i < p->count; i++) {
struct mx1_buffer *buf = container_of(icf->vb_vidq.bufs[i],
struct mx1_buffer, vb);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- if (!res || !irq) {
+ if (!res || (int)irq <= 0) {
err = -ENODEV;
goto exit;
}
pcdev);
imx_dma_config_channel(pcdev->dma_chan, IMX_DMA_TYPE_FIFO,
- IMX_DMA_MEMSIZE_32, DMA_REQ_CSI_R, 0);
+ IMX_DMA_MEMSIZE_32, MX1_DMA_REQ_CSI_R, 0);
/* burst length : 16 words = 64 bytes */
imx_dma_config_burstlen(pcdev->dma_chan, 0);
set_fiq_handler(&mx1_camera_sof_fiq_start, &mx1_camera_sof_fiq_end -
&mx1_camera_sof_fiq_start);
- regs.ARM_r8 = DMA_BASE + DMA_DIMR;
- regs.ARM_r9 = DMA_BASE + DMA_CCR(pcdev->dma_chan);
+ regs.ARM_r8 = (long)MX1_DMA_DIMR;
+ regs.ARM_r9 = (long)MX1_DMA_CCR(pcdev->dma_chan);
regs.ARM_r10 = (long)pcdev->base + CSICR1;
regs.ARM_fp = (long)pcdev->base + CSISR;
regs.ARM_sp = 1 << pcdev->dma_chan;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff