#include <linux/version.h>
#include <linux/device.h>
#include <linux/platform_device.h>
-#include <linux/mutex.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */
#define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */
-static DEFINE_MUTEX(camera_lock);
-
/* per video frame buffer */
struct sh_mobile_ceu_buffer {
struct videobuf_buffer vb; /* v4l buffer must be first */
spinlock_t lock;
struct list_head capture;
struct videobuf_buffer *active;
+ int is_interlace;
struct sh_mobile_ceu_info *pdata;
+
+ const struct soc_camera_data_format *camera_fmt;
};
static void ceu_write(struct sh_mobile_ceu_dev *priv,
- unsigned long reg_offs, unsigned long data)
+ unsigned long reg_offs, u32 data)
{
iowrite32(data, priv->base + reg_offs);
}
-static unsigned long ceu_read(struct sh_mobile_ceu_dev *priv,
- unsigned long reg_offs)
+static u32 ceu_read(struct sh_mobile_ceu_dev *priv, unsigned long reg_offs)
{
return ioread32(priv->base + reg_offs);
}
buf->vb.state = VIDEOBUF_NEEDS_INIT;
}
+#define CEU_CETCR_MAGIC 0x0317f313 /* acknowledge magical interrupt sources */
+#define CEU_CETCR_IGRW (1 << 4) /* prohibited register access interrupt bit */
+#define CEU_CEIER_CPEIE (1 << 0) /* one-frame capture end interrupt */
+#define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */
+
+
static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
{
- ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~1);
- ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & 0x0317f313);
- ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | 1);
-
- ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~0x10000);
+ struct soc_camera_device *icd = pcdev->icd;
+ dma_addr_t phys_addr_top, phys_addr_bottom;
- ceu_write(pcdev, CETCR, 0x0317f313 ^ 0x10);
+ /* The hardware is _very_ picky about this sequence. Especially
+ * the CEU_CETCR_MAGIC value. It seems like we need to acknowledge
+ * several not-so-well documented interrupt sources in CETCR.
+ */
+ ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_CPEIE);
+ ceu_write(pcdev, CETCR, ~ceu_read(pcdev, CETCR) & CEU_CETCR_MAGIC);
+ ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_CPEIE);
+ ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP);
+ ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW);
+
+ if (!pcdev->active)
+ return;
+
+ phys_addr_top = videobuf_to_dma_contig(pcdev->active);
+ ceu_write(pcdev, CDAYR, phys_addr_top);
+ if (pcdev->is_interlace) {
+ phys_addr_bottom = phys_addr_top + icd->width;
+ ceu_write(pcdev, CDBYR, phys_addr_bottom);
+ }
- if (pcdev->active) {
- pcdev->active->state = VIDEOBUF_ACTIVE;
- ceu_write(pcdev, CDAYR, videobuf_to_dma_contig(pcdev->active));
- ceu_write(pcdev, CAPSR, 0x1); /* start capture */
+ switch (icd->current_fmt->fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ phys_addr_top += icd->width * icd->height;
+ ceu_write(pcdev, CDACR, phys_addr_top);
+ if (pcdev->is_interlace) {
+ phys_addr_bottom = phys_addr_top + icd->width;
+ ceu_write(pcdev, CDBCR, phys_addr_bottom);
+ }
}
+
+ pcdev->active->state = VIDEOBUF_ACTIVE;
+ ceu_write(pcdev, CAPSR, 0x1); /* start capture */
}
static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
return IRQ_HANDLED;
}
+/* Called with .video_lock held */
static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
int ret = -EBUSY;
- mutex_lock(&camera_lock);
-
if (pcdev->icd)
goto err;
pcdev->icd = icd;
err:
- mutex_unlock(&camera_lock);
-
return ret;
}
+/* Called with .video_lock held */
static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- int ret, buswidth, width, cfszr_width, cdwdr_width;
+ int ret, buswidth, width, height, cfszr_width, cdwdr_width;
unsigned long camera_flags, common_flags, value;
+ int yuv_mode, yuv_lineskip;
camera_flags = icd->ops->query_bus_param(icd);
common_flags = soc_camera_bus_param_compatible(camera_flags,
ceu_write(pcdev, CRCNTR, 0);
ceu_write(pcdev, CRCMPR, 0);
- value = 0x00000010;
- value |= (common_flags & SOCAM_VSYNC_ACTIVE_LOW) ? (1 << 1) : 0;
- value |= (common_flags & SOCAM_HSYNC_ACTIVE_LOW) ? (1 << 0) : 0;
- value |= (buswidth == 16) ? (1 << 12) : 0;
+ value = 0x00000010; /* data fetch by default */
+ yuv_mode = yuv_lineskip = 0;
+
+ switch (icd->current_fmt->fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ yuv_lineskip = 1; /* skip for NV12/21, no skip for NV16/61 */
+ /* fall-through */
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ yuv_mode = 1;
+ switch (pcdev->camera_fmt->fourcc) {
+ case V4L2_PIX_FMT_UYVY:
+ value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */
+ break;
+ case V4L2_PIX_FMT_VYUY:
+ value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */
+ break;
+ case V4L2_PIX_FMT_YUYV:
+ value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */
+ break;
+ case V4L2_PIX_FMT_YVYU:
+ value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */
+ break;
+ default:
+ BUG();
+ }
+ }
+
+ if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 ||
+ icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61)
+ value ^= 0x00000100; /* swap U, V to change from NV1x->NVx1 */
+
+ value |= common_flags & SOCAM_VSYNC_ACTIVE_LOW ? 1 << 1 : 0;
+ value |= common_flags & SOCAM_HSYNC_ACTIVE_LOW ? 1 << 0 : 0;
+ value |= buswidth == 16 ? 1 << 12 : 0;
ceu_write(pcdev, CAMCR, value);
ceu_write(pcdev, CAPCR, 0x00300000);
- ceu_write(pcdev, CAIFR, 0);
+ ceu_write(pcdev, CAIFR, (pcdev->is_interlace) ? 0x101 : 0);
mdelay(1);
- width = icd->width * (icd->current_fmt->depth / 8);
- width = (buswidth == 16) ? width / 2 : width;
- cfszr_width = (buswidth == 8) ? width / 2 : width;
- cdwdr_width = (buswidth == 16) ? width * 2 : width;
+ if (yuv_mode) {
+ width = icd->width * 2;
+ width = buswidth == 16 ? width / 2 : width;
+ cfszr_width = cdwdr_width = icd->width;
+ } else {
+ width = icd->width * ((icd->current_fmt->depth + 7) >> 3);
+ width = buswidth == 16 ? width / 2 : width;
+ cfszr_width = buswidth == 8 ? width / 2 : width;
+ cdwdr_width = buswidth == 16 ? width * 2 : width;
+ }
+
+ height = icd->height;
+ if (pcdev->is_interlace) {
+ height /= 2;
+ cdwdr_width *= 2;
+ }
ceu_write(pcdev, CAMOR, 0);
- ceu_write(pcdev, CAPWR, (icd->height << 16) | width);
- ceu_write(pcdev, CFLCR, 0); /* data fetch mode - no scaling */
- ceu_write(pcdev, CFSZR, (icd->height << 16) | cfszr_width);
- ceu_write(pcdev, CLFCR, 0); /* data fetch mode - no lowpass filter */
+ ceu_write(pcdev, CAPWR, (height << 16) | width);
+ ceu_write(pcdev, CFLCR, 0); /* no scaling */
+ ceu_write(pcdev, CFSZR, (height << 16) | cfszr_width);
+ ceu_write(pcdev, CLFCR, 0); /* no lowpass filter */
/* A few words about byte order (observed in Big Endian mode)
*
* using 7 we swap the data bytes to match the incoming order:
* D0, D1, D2, D3, D4, D5, D6, D7
*/
- ceu_write(pcdev, CDOCR, 0x00000017);
+ value = 0x00000017;
+ if (yuv_lineskip)
+ value &= ~0x00000010; /* convert 4:2:2 -> 4:2:0 */
+
+ ceu_write(pcdev, CDOCR, value);
ceu_write(pcdev, CDWDR, cdwdr_width);
ceu_write(pcdev, CFWCR, 0); /* keep "datafetch firewall" disabled */
/* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */
- /* in data fetch mode: no need for CDACR, CDBYR, CDBCR */
-
return 0;
}
-static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd,
- __u32 pixfmt)
+static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
return 0;
}
-static int sh_mobile_ceu_set_fmt_cap(struct soc_camera_device *icd,
- __u32 pixfmt, struct v4l2_rect *rect)
+static const struct soc_camera_data_format sh_mobile_ceu_formats[] = {
+ {
+ .name = "NV12",
+ .depth = 12,
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .name = "NV21",
+ .depth = 12,
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .name = "NV16",
+ .depth = 16,
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+ {
+ .name = "NV61",
+ .depth = 16,
+ .fourcc = V4L2_PIX_FMT_NV61,
+ .colorspace = V4L2_COLORSPACE_JPEG,
+ },
+};
+
+static int sh_mobile_ceu_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 ret, k, n;
+ int formats = 0;
+
+ ret = sh_mobile_ceu_try_bus_param(icd);
+ if (ret < 0)
+ return 0;
+
+ switch (icd->formats[idx].fourcc) {
+ case V4L2_PIX_FMT_UYVY:
+ case V4L2_PIX_FMT_VYUY:
+ case V4L2_PIX_FMT_YUYV:
+ case V4L2_PIX_FMT_YVYU:
+ n = ARRAY_SIZE(sh_mobile_ceu_formats);
+ formats += n;
+ for (k = 0; xlate && k < n; k++) {
+ xlate->host_fmt = &sh_mobile_ceu_formats[k];
+ xlate->cam_fmt = icd->formats + idx;
+ xlate->buswidth = icd->formats[idx].depth;
+ xlate++;
+ dev_dbg(&ici->dev, "Providing format %s using %s\n",
+ sh_mobile_ceu_formats[k].name,
+ icd->formats[idx].name);
+ }
+ 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 sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
+ __u32 pixfmt, struct v4l2_rect *rect)
{
- return icd->ops->set_fmt_cap(icd, pixfmt, rect);
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ const struct soc_camera_format_xlate *xlate;
+ int ret;
+
+ if (!pixfmt)
+ return icd->ops->set_fmt(icd, pixfmt, rect);
+
+ 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, xlate->cam_fmt->fourcc, rect);
+
+ if (!ret) {
+ icd->buswidth = xlate->buswidth;
+ icd->current_fmt = xlate->host_fmt;
+ pcdev->camera_fmt = xlate->cam_fmt;
+ }
+
+ return ret;
}
-static int sh_mobile_ceu_try_fmt_cap(struct soc_camera_device *icd,
- struct v4l2_format *f)
+static int sh_mobile_ceu_try_fmt(struct soc_camera_device *icd,
+ struct v4l2_format *f)
{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ const struct soc_camera_format_xlate *xlate;
+ __u32 pixfmt = f->fmt.pix.pixelformat;
+ int ret;
+
+ xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
+ if (!xlate) {
+ dev_warn(&ici->dev, "Format %x not found\n", pixfmt);
+ return -EINVAL;
+ }
+
/* FIXME: calculate using depth and bus width */
if (f->fmt.pix.height < 4)
f->fmt.pix.width &= ~0x01;
f->fmt.pix.height &= ~0x03;
+ f->fmt.pix.bytesperline = f->fmt.pix.width *
+ DIV_ROUND_UP(xlate->host_fmt->depth, 8);
+ f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+
/* limit to sensor capabilities */
- return icd->ops->try_fmt_cap(icd, f);
+ ret = icd->ops->try_fmt(icd, f);
+ if (ret < 0)
+ return ret;
+
+ switch (f->fmt.pix.field) {
+ case V4L2_FIELD_INTERLACED:
+ pcdev->is_interlace = 1;
+ break;
+ case V4L2_FIELD_ANY:
+ f->fmt.pix.field = V4L2_FIELD_NONE;
+ /* fall-through */
+ case V4L2_FIELD_NONE:
+ pcdev->is_interlace = 0;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
}
static int sh_mobile_ceu_reqbufs(struct soc_camera_file *icf,
&sh_mobile_ceu_videobuf_ops,
&ici->dev, &pcdev->lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
- V4L2_FIELD_NONE,
+ V4L2_FIELD_ANY,
sizeof(struct sh_mobile_ceu_buffer),
icd);
}
.owner = THIS_MODULE,
.add = sh_mobile_ceu_add_device,
.remove = sh_mobile_ceu_remove_device,
- .set_fmt_cap = sh_mobile_ceu_set_fmt_cap,
- .try_fmt_cap = sh_mobile_ceu_try_fmt_cap,
+ .get_formats = sh_mobile_ceu_get_formats,
+ .set_fmt = sh_mobile_ceu_set_fmt,
+ .try_fmt = sh_mobile_ceu_try_fmt,
.reqbufs = sh_mobile_ceu_reqbufs,
.poll = sh_mobile_ceu_poll,
.querycap = sh_mobile_ceu_querycap,
- .try_bus_param = sh_mobile_ceu_try_bus_param,
.set_bus_param = sh_mobile_ceu_set_bus_param,
.init_videobuf = sh_mobile_ceu_init_videobuf,
};
/* request irq */
err = request_irq(pcdev->irq, sh_mobile_ceu_irq, IRQF_DISABLED,
- pdev->dev.bus_id, pcdev);
+ dev_name(&pdev->dev), pcdev);
if (err) {
dev_err(&pdev->dev, "Unable to register CEU interrupt.\n");
goto exit_release_mem;
pcdev->ici.priv = pcdev;
pcdev->ici.dev.parent = &pdev->dev;
pcdev->ici.nr = pdev->id;
- pcdev->ici.drv_name = pdev->dev.bus_id,
- pcdev->ici.ops = &sh_mobile_ceu_host_ops,
+ pcdev->ici.drv_name = dev_name(&pdev->dev);
+ pcdev->ici.ops = &sh_mobile_ceu_host_ops;
err = soc_camera_host_register(&pcdev->ici);
if (err)
projects / linux-2.6-omap-h63xx.git / blobdiff