#include <linux/moduleparam.h>
#include <linux/time.h>
#include <linux/version.h>
+#include <linux/slab.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/videodev2.h>
-#include <linux/clk.h>
+#include <linux/pm_runtime.h>
+#include <linux/sched.h>
#include <media/v4l2-common.h>
#include <media/v4l2-dev.h>
#include <media/soc_camera.h>
#include <media/sh_mobile_ceu.h>
#include <media/videobuf-dma-contig.h>
+#include <media/v4l2-mediabus.h>
+#include <media/soc_mediabus.h>
/* register offsets for sh7722 / sh7723 */
#define CDBYR2 0x98 /* Capture data bottom-field address Y register 2 */
#define CDBCR2 0x9c /* Capture data bottom-field address C register 2 */
+#undef DEBUG_GEOMETRY
+#ifdef DEBUG_GEOMETRY
+#define dev_geo dev_info
+#else
+#define dev_geo dev_dbg
+#endif
+
/* per video frame buffer */
struct sh_mobile_ceu_buffer {
struct videobuf_buffer vb; /* v4l buffer must be first */
- const struct soc_camera_data_format *fmt;
+ enum v4l2_mbus_pixelcode code;
};
struct sh_mobile_ceu_dev {
- struct device *dev;
struct soc_camera_host ici;
struct soc_camera_device *icd;
unsigned int irq;
void __iomem *base;
- struct clk *clk;
unsigned long video_limit;
/* lock used to protect videobuf */
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;
+ u32 cflcr;
+
+ enum v4l2_field field;
+
+ unsigned int image_mode:1;
+ unsigned int is_16bit:1;
+};
+
+struct sh_mobile_ceu_cam {
+ /* CEU offsets within scaled by the CEU camera output */
+ unsigned int ceu_left;
+ unsigned int ceu_top;
+ /* Client output, as seen by the CEU */
+ unsigned int width;
+ unsigned int height;
+ /*
+ * User window from S_CROP / G_CROP, produced by client cropping and
+ * scaling, CEU scaling and CEU cropping, mapped back onto the client
+ * input window
+ */
+ struct v4l2_rect subrect;
+ /* Camera cropping rectangle */
+ struct v4l2_rect rect;
+ const struct soc_mbus_pixelfmt *extra_fmt;
+ enum v4l2_mbus_pixelcode code;
};
static unsigned long make_bus_param(struct sh_mobile_ceu_dev *pcdev)
return ioread32(priv->base + reg_offs);
}
+static int sh_mobile_ceu_soft_reset(struct sh_mobile_ceu_dev *pcdev)
+{
+ int i, success = 0;
+ struct soc_camera_device *icd = pcdev->icd;
+
+ ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
+
+ /* wait CSTSR.CPTON bit */
+ for (i = 0; i < 1000; i++) {
+ if (!(ceu_read(pcdev, CSTSR) & 1)) {
+ success++;
+ break;
+ }
+ udelay(1);
+ }
+
+ /* wait CAPSR.CPKIL bit */
+ for (i = 0; i < 1000; i++) {
+ if (!(ceu_read(pcdev, CAPSR) & (1 << 16))) {
+ success++;
+ break;
+ }
+ udelay(1);
+ }
+
+
+ if (2 != success) {
+ dev_warn(&icd->dev, "soft reset time out\n");
+ return -EIO;
+ }
+
+ return 0;
+}
+
/*
* Videobuf operations
*/
struct soc_camera_device *icd = vq->priv_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
- *size = PAGE_ALIGN(icd->width * icd->height * bytes_per_pixel);
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
+ *size = bytes_per_line * icd->user_height;
if (0 == *count)
*count = 2;
if (pcdev->video_limit) {
- while (*size * *count > pcdev->video_limit)
- (*count)--;
+ if (PAGE_ALIGN(*size) * *count > pcdev->video_limit)
+ *count = pcdev->video_limit / PAGE_ALIGN(*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;
}
struct sh_mobile_ceu_buffer *buf)
{
struct soc_camera_device *icd = vq->priv_data;
+ struct device *dev = icd->dev.parent;
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
+ dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
&buf->vb, buf->vb.baddr, buf->vb.bsize);
if (in_interrupt())
BUG();
+ videobuf_waiton(&buf->vb, 0, 0);
videobuf_dma_contig_free(vq, &buf->vb);
- dev_dbg(&icd->dev, "%s freed\n", __func__);
+ dev_dbg(dev, "%s freed\n", __func__);
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_CEIER_VBP (1 << 20) /* vbp error */
#define CEU_CAPCR_CTNCP (1 << 16) /* continuous capture mode (if set) */
+#define CEU_CEIER_MASK (CEU_CEIER_CPEIE | CEU_CEIER_VBP)
-static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
+/*
+ * return value doesn't reflex the success/failure to queue the new buffer,
+ * but rather the status of the previous buffer.
+ */
+static int sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
{
struct soc_camera_device *icd = pcdev->icd;
dma_addr_t phys_addr_top, phys_addr_bottom;
+ unsigned long top1, top2;
+ unsigned long bottom1, bottom2;
+ u32 status;
+ int ret = 0;
- /* The hardware is _very_ picky about this sequence. Especially
+ /*
+ * 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, CEIER, ceu_read(pcdev, CEIER) & ~CEU_CEIER_MASK);
+ status = ceu_read(pcdev, CETCR);
+ ceu_write(pcdev, CETCR, ~status & CEU_CETCR_MAGIC);
+ ceu_write(pcdev, CEIER, ceu_read(pcdev, CEIER) | CEU_CEIER_MASK);
ceu_write(pcdev, CAPCR, ceu_read(pcdev, CAPCR) & ~CEU_CAPCR_CTNCP);
ceu_write(pcdev, CETCR, CEU_CETCR_MAGIC ^ CEU_CETCR_IGRW);
+ /*
+ * When a VBP interrupt occurs, a capture end interrupt does not occur
+ * and the image of that frame is not captured correctly. So, soft reset
+ * is needed here.
+ */
+ if (status & CEU_CEIER_VBP) {
+ sh_mobile_ceu_soft_reset(pcdev);
+ ret = -EIO;
+ }
+
if (!pcdev->active)
- return;
+ return ret;
+
+ if (V4L2_FIELD_INTERLACED_BT == pcdev->field) {
+ top1 = CDBYR;
+ top2 = CDBCR;
+ bottom1 = CDAYR;
+ bottom2 = CDACR;
+ } else {
+ top1 = CDAYR;
+ top2 = CDACR;
+ bottom1 = CDBYR;
+ bottom2 = CDBCR;
+ }
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);
+ ceu_write(pcdev, top1, phys_addr_top);
+ if (V4L2_FIELD_NONE != pcdev->field) {
+ phys_addr_bottom = phys_addr_top + icd->user_width;
+ ceu_write(pcdev, bottom1, phys_addr_bottom);
}
- switch (icd->current_fmt->fourcc) {
+ switch (icd->current_fmt->host_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);
+ phys_addr_top += icd->user_width *
+ icd->user_height;
+ ceu_write(pcdev, top2, phys_addr_top);
+ if (V4L2_FIELD_NONE != pcdev->field) {
+ phys_addr_bottom = phys_addr_top + icd->user_width;
+ ceu_write(pcdev, bottom2, phys_addr_bottom);
}
}
pcdev->active->state = VIDEOBUF_ACTIVE;
ceu_write(pcdev, CAPSR, 0x1); /* start capture */
+
+ return ret;
}
static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
{
struct soc_camera_device *icd = vq->priv_data;
struct sh_mobile_ceu_buffer *buf;
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
int ret;
+ if (bytes_per_line < 0)
+ return bytes_per_line;
+
buf = container_of(vb, struct sh_mobile_ceu_buffer, vb);
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
+ dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
vb, vb->baddr, vb->bsize);
/* Added list head initialization on alloc */
WARN_ON(!list_empty(&vb->queue));
#ifdef DEBUG
- /* This can be useful if you want to see if we actually fill
- * the buffer with something */
+ /*
+ * This can be useful if you want to see if we actually fill
+ * the buffer with something
+ */
memset((void *)vb->baddr, 0xaa, vb->bsize);
#endif
BUG_ON(NULL == icd->current_fmt);
- if (buf->fmt != icd->current_fmt ||
- vb->width != icd->width ||
- vb->height != icd->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->width;
- vb->height = icd->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 = vb->height * bytes_per_line;
if (0 != vb->baddr && vb->bsize < vb->size) {
ret = -EINVAL;
goto out;
return ret;
}
+/* Called under spinlock_irqsave(&pcdev->lock, ...) */
static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
struct soc_camera_device *icd = vq->priv_data;
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- unsigned long flags;
- dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
+ dev_dbg(icd->dev.parent, "%s (vb=0x%p) 0x%08lx %zd\n", __func__,
vb, vb->baddr, vb->bsize);
vb->state = VIDEOBUF_QUEUED;
- spin_lock_irqsave(&pcdev->lock, flags);
list_add_tail(&vb->queue, &pcdev->capture);
if (!pcdev->active) {
+ /*
+ * Because there were no active buffer at this moment,
+ * we are not interested in the return value of
+ * sh_mobile_ceu_capture here.
+ */
pcdev->active = vb;
sh_mobile_ceu_capture(pcdev);
}
-
- spin_unlock_irqrestore(&pcdev->lock, flags);
}
static void sh_mobile_ceu_videobuf_release(struct videobuf_queue *vq,
struct videobuf_buffer *vb)
{
+ struct soc_camera_device *icd = vq->priv_data;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ unsigned long flags;
+
+ spin_lock_irqsave(&pcdev->lock, flags);
+
+ if (pcdev->active == vb) {
+ /* disable capture (release DMA buffer), reset */
+ ceu_write(pcdev, CAPSR, 1 << 16);
+ pcdev->active = NULL;
+ }
+
+ if ((vb->state == VIDEOBUF_ACTIVE || vb->state == VIDEOBUF_QUEUED) &&
+ !list_empty(&vb->queue)) {
+ vb->state = VIDEOBUF_ERROR;
+ list_del_init(&vb->queue);
+ }
+
+ spin_unlock_irqrestore(&pcdev->lock, flags);
+
free_buffer(vq, container_of(vb, struct sh_mobile_ceu_buffer, vb));
}
spin_lock_irqsave(&pcdev->lock, flags);
vb = pcdev->active;
+ if (!vb)
+ /* Stale interrupt from a released buffer */
+ goto out;
+
list_del_init(&vb->queue);
if (!list_empty(&pcdev->capture))
else
pcdev->active = NULL;
- sh_mobile_ceu_capture(pcdev);
-
- vb->state = VIDEOBUF_DONE;
+ vb->state = (sh_mobile_ceu_capture(pcdev) < 0) ?
+ VIDEOBUF_ERROR : VIDEOBUF_DONE;
do_gettimeofday(&vb->ts);
vb->field_count++;
wake_up(&vb->done);
+
+out:
spin_unlock_irqrestore(&pcdev->lock, flags);
return IRQ_HANDLED;
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- int ret = -EBUSY;
+ int ret;
if (pcdev->icd)
- goto err;
+ return -EBUSY;
- dev_info(&icd->dev,
+ dev_info(icd->dev.parent,
"SuperH Mobile CEU driver attached to camera %d\n",
icd->devnum);
- ret = icd->ops->init(icd);
- if (ret)
- goto err;
+ pm_runtime_get_sync(ici->v4l2_dev.dev);
- clk_enable(pcdev->clk);
+ ret = sh_mobile_ceu_soft_reset(pcdev);
+ if (!ret)
+ pcdev->icd = icd;
- ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
- while (ceu_read(pcdev, CSTSR) & 1)
- msleep(1);
-
- pcdev->icd = icd;
-err:
return ret;
}
/* disable capture, disable interrupts */
ceu_write(pcdev, CEIER, 0);
- ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
+ sh_mobile_ceu_soft_reset(pcdev);
/* make sure active buffer is canceled */
spin_lock_irqsave(&pcdev->lock, flags);
}
spin_unlock_irqrestore(&pcdev->lock, flags);
- clk_disable(pcdev->clk);
-
- icd->ops->release(icd);
+ pm_runtime_put_sync(ici->v4l2_dev.dev);
- dev_info(&icd->dev,
+ dev_info(icd->dev.parent,
"SuperH Mobile CEU driver detached from camera %d\n",
icd->devnum);
pcdev->icd = NULL;
}
+/*
+ * See chapter 29.4.12 "Capture Filter Control Register (CFLCR)"
+ * in SH7722 Hardware Manual
+ */
+static unsigned int size_dst(unsigned int src, unsigned int scale)
+{
+ unsigned int mant_pre = scale >> 12;
+ if (!src || !scale)
+ return src;
+ return ((mant_pre + 2 * (src - 1)) / (2 * mant_pre) - 1) *
+ mant_pre * 4096 / scale + 1;
+}
+
+static u16 calc_scale(unsigned int src, unsigned int *dst)
+{
+ u16 scale;
+
+ if (src == *dst)
+ return 0;
+
+ scale = (src * 4096 / *dst) & ~7;
+
+ while (scale > 4096 && size_dst(src, scale) < *dst)
+ scale -= 8;
+
+ *dst = size_dst(src, scale);
+
+ return scale;
+}
+
+/* rect is guaranteed to not exceed the scaled camera rectangle */
+static void sh_mobile_ceu_set_rect(struct soc_camera_device *icd)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ unsigned int height, width, cdwdr_width, in_width, in_height;
+ unsigned int left_offset, top_offset;
+ u32 camor;
+
+ dev_geo(icd->dev.parent, "Crop %ux%u@%u:%u\n",
+ icd->user_width, icd->user_height, cam->ceu_left, cam->ceu_top);
+
+ left_offset = cam->ceu_left;
+ top_offset = cam->ceu_top;
+
+ /* CEU cropping (CFSZR) is applied _after_ the scaling filter (CFLCR) */
+ if (pcdev->image_mode) {
+ in_width = cam->width;
+ if (!pcdev->is_16bit) {
+ in_width *= 2;
+ left_offset *= 2;
+ }
+ width = icd->user_width;
+ cdwdr_width = icd->user_width;
+ } else {
+ int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width,
+ icd->current_fmt->host_fmt);
+ unsigned int w_factor;
+
+ width = icd->user_width;
+
+ switch (icd->current_fmt->host_fmt->packing) {
+ case SOC_MBUS_PACKING_2X8_PADHI:
+ w_factor = 2;
+ break;
+ default:
+ w_factor = 1;
+ }
+
+ in_width = cam->width * w_factor;
+ left_offset = left_offset * w_factor;
+
+ if (bytes_per_line < 0)
+ cdwdr_width = icd->user_width;
+ else
+ cdwdr_width = bytes_per_line;
+ }
+
+ height = icd->user_height;
+ in_height = cam->height;
+ if (V4L2_FIELD_NONE != pcdev->field) {
+ height /= 2;
+ in_height /= 2;
+ top_offset /= 2;
+ cdwdr_width *= 2;
+ }
+
+ /* Set CAMOR, CAPWR, CFSZR, take care of CDWDR */
+ camor = left_offset | (top_offset << 16);
+
+ dev_geo(icd->dev.parent,
+ "CAMOR 0x%x, CAPWR 0x%x, CFSZR 0x%x, CDWDR 0x%x\n", camor,
+ (in_height << 16) | in_width, (height << 16) | width,
+ cdwdr_width);
+
+ ceu_write(pcdev, CAMOR, camor);
+ ceu_write(pcdev, CAPWR, (in_height << 16) | in_width);
+ ceu_write(pcdev, CFSZR, (height << 16) | width);
+ ceu_write(pcdev, CDWDR, cdwdr_width);
+}
+
+static u32 capture_save_reset(struct sh_mobile_ceu_dev *pcdev)
+{
+ u32 capsr = ceu_read(pcdev, CAPSR);
+ ceu_write(pcdev, CAPSR, 1 << 16); /* reset, stop capture */
+ return capsr;
+}
+
+static void capture_restore(struct sh_mobile_ceu_dev *pcdev, u32 capsr)
+{
+ unsigned long timeout = jiffies + 10 * HZ;
+
+ /*
+ * Wait until the end of the current frame. It can take a long time,
+ * but if it has been aborted by a CAPSR reset, it shoule exit sooner.
+ */
+ while ((ceu_read(pcdev, CSTSR) & 1) && time_before(jiffies, timeout))
+ msleep(1);
+
+ if (time_after(jiffies, timeout)) {
+ dev_err(pcdev->ici.v4l2_dev.dev,
+ "Timeout waiting for frame end! Interface problem?\n");
+ return;
+ }
+
+ /* Wait until reset clears, this shall not hang... */
+ while (ceu_read(pcdev, CAPSR) & (1 << 16))
+ udelay(10);
+
+ /* Anything to restore? */
+ if (capsr & ~(1 << 16))
+ ceu_write(pcdev, CAPSR, capsr);
+}
+
static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
__u32 pixfmt)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
- int ret, buswidth, width, height, cfszr_width, cdwdr_width;
+ int ret;
unsigned long camera_flags, common_flags, value;
- int yuv_mode, yuv_lineskip;
+ int yuv_lineskip;
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ u32 capsr = capture_save_reset(pcdev);
camera_flags = icd->ops->query_bus_param(icd);
common_flags = soc_camera_bus_param_compatible(camera_flags,
if (!common_flags)
return -EINVAL;
+ /* Make choises, based on platform preferences */
+ if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) &&
+ (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) {
+ if (pcdev->pdata->flags & SH_CEU_FLAG_HSYNC_LOW)
+ common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH;
+ else
+ common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW;
+ }
+
+ if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) &&
+ (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) {
+ if (pcdev->pdata->flags & SH_CEU_FLAG_VSYNC_LOW)
+ common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH;
+ else
+ common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW;
+ }
+
ret = icd->ops->set_bus_param(icd, common_flags);
if (ret < 0)
return ret;
switch (common_flags & SOCAM_DATAWIDTH_MASK) {
case SOCAM_DATAWIDTH_8:
- buswidth = 8;
+ pcdev->is_16bit = 0;
break;
case SOCAM_DATAWIDTH_16:
- buswidth = 16;
+ pcdev->is_16bit = 1;
break;
default:
return -EINVAL;
ceu_write(pcdev, CRCMPR, 0);
value = 0x00000010; /* data fetch by default */
- yuv_mode = yuv_lineskip = 0;
+ yuv_lineskip = 0;
- switch (icd->current_fmt->fourcc) {
+ switch (icd->current_fmt->host_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:
+ switch (cam->code) {
+ case V4L2_MBUS_FMT_YUYV8_2X8_BE:
value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */
break;
- case V4L2_PIX_FMT_VYUY:
+ case V4L2_MBUS_FMT_YVYU8_2X8_BE:
value = 0x00000100; /* Cr0, Y0, Cb0, Y1 */
break;
- case V4L2_PIX_FMT_YUYV:
+ case V4L2_MBUS_FMT_YUYV8_2X8_LE:
value = 0x00000200; /* Y0, Cb0, Y1, Cr0 */
break;
- case V4L2_PIX_FMT_YVYU:
+ case V4L2_MBUS_FMT_YVYU8_2X8_LE:
value = 0x00000300; /* Y0, Cr0, Y1, Cb0 */
break;
default:
}
}
- if (icd->current_fmt->fourcc == V4L2_PIX_FMT_NV21 ||
- icd->current_fmt->fourcc == V4L2_PIX_FMT_NV61)
+ if (icd->current_fmt->host_fmt->fourcc == V4L2_PIX_FMT_NV21 ||
+ icd->current_fmt->host_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;
+ value |= pcdev->is_16bit ? 1 << 12 : 0;
ceu_write(pcdev, CAMCR, value);
ceu_write(pcdev, CAPCR, 0x00300000);
- ceu_write(pcdev, CAIFR, (pcdev->is_interlace) ? 0x101 : 0);
- mdelay(1);
-
- 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;
+ switch (pcdev->field) {
+ case V4L2_FIELD_INTERLACED_TB:
+ value = 0x101;
+ break;
+ case V4L2_FIELD_INTERLACED_BT:
+ value = 0x102;
+ break;
+ default:
+ value = 0;
+ break;
}
+ ceu_write(pcdev, CAIFR, value);
- height = icd->height;
- if (pcdev->is_interlace) {
- height /= 2;
- cdwdr_width *= 2;
- }
+ sh_mobile_ceu_set_rect(icd);
+ mdelay(1);
- ceu_write(pcdev, CAMOR, 0);
- 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 */
+ dev_geo(icd->dev.parent, "CFLCR 0x%x\n", pcdev->cflcr);
+ ceu_write(pcdev, CFLCR, pcdev->cflcr);
- /* A few words about byte order (observed in Big Endian mode)
+ /*
+ * A few words about byte order (observed in Big Endian mode)
*
* In data fetch mode bytes are received in chunks of 8 bytes.
* D0, D1, D2, D3, D4, D5, D6, D7 (D0 received first)
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 */
+ dev_dbg(icd->dev.parent, "S_FMT successful for %c%c%c%c %ux%u\n",
+ pixfmt & 0xff, (pixfmt >> 8) & 0xff,
+ (pixfmt >> 16) & 0xff, (pixfmt >> 24) & 0xff,
+ icd->user_width, icd->user_height);
+
+ capture_restore(pcdev, capsr);
+
/* not in bundle mode: skip CBDSR, CDAYR2, CDACR2, CDBYR2, CDBCR2 */
return 0;
}
-static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd)
+static int sh_mobile_ceu_try_bus_param(struct soc_camera_device *icd,
+ unsigned char buswidth)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
camera_flags = icd->ops->query_bus_param(icd);
common_flags = soc_camera_bus_param_compatible(camera_flags,
make_bus_param(pcdev));
- if (!common_flags)
+ if (!common_flags || buswidth > 16 ||
+ (buswidth > 8 && !(common_flags & SOCAM_DATAWIDTH_16)))
return -EINVAL;
return 0;
}
-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,
- },
+static const struct soc_mbus_pixelfmt sh_mobile_ceu_formats[] = {
{
- .name = "NV61",
- .depth = 16,
- .fourcc = V4L2_PIX_FMT_NV61,
- .colorspace = V4L2_COLORSPACE_JPEG,
+ .fourcc = V4L2_PIX_FMT_NV12,
+ .name = "NV12",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV21,
+ .name = "NV21",
+ .bits_per_sample = 12,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV16,
+ .name = "NV16",
+ .bits_per_sample = 16,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
+ }, {
+ .fourcc = V4L2_PIX_FMT_NV61,
+ .name = "NV61",
+ .bits_per_sample = 16,
+ .packing = SOC_MBUS_PACKING_NONE,
+ .order = SOC_MBUS_ORDER_LE,
},
};
-static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx,
+/* This will be corrected as we get more formats */
+static bool sh_mobile_ceu_packing_supported(const struct soc_mbus_pixelfmt *fmt)
+{
+ 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 client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect);
+
+static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, unsigned int idx,
struct soc_camera_format_xlate *xlate)
{
- struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->dev.parent;
int ret, k, n;
int formats = 0;
+ struct sh_mobile_ceu_cam *cam;
+ enum v4l2_mbus_pixelcode code;
+ const struct soc_mbus_pixelfmt *fmt;
+
+ ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code);
+ if (ret < 0)
+ /* No more formats */
+ return 0;
+
+ fmt = soc_mbus_get_fmtdesc(code);
+ if (!fmt) {
+ dev_err(icd->dev.parent,
+ "Invalid format code #%u: %d\n", idx, code);
+ return -EINVAL;
+ }
- ret = sh_mobile_ceu_try_bus_param(icd);
+ ret = sh_mobile_ceu_try_bus_param(icd, fmt->bits_per_sample);
if (ret < 0)
return 0;
+ if (!icd->host_priv) {
+ struct v4l2_mbus_framefmt mf;
+ struct v4l2_rect rect;
+ struct device *dev = icd->dev.parent;
+ int shift = 0;
+
+ /* FIXME: subwindow is lost between close / open */
+
+ /* Cache current client geometry */
+ ret = client_g_rect(sd, &rect);
+ if (ret < 0)
+ return ret;
+
+ /* First time */
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ while ((mf.width > 2560 || mf.height > 1920) && shift < 4) {
+ /* Try 2560x1920, 1280x960, 640x480, 320x240 */
+ mf.width = 2560 >> shift;
+ mf.height = 1920 >> shift;
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+ shift++;
+ }
+
+ if (shift == 4) {
+ dev_err(dev, "Failed to configure the client below %ux%x\n",
+ mf.width, mf.height);
+ return -EIO;
+ }
+
+ dev_geo(dev, "camera fmt %ux%u\n", mf.width, mf.height);
+
+ cam = kzalloc(sizeof(*cam), GFP_KERNEL);
+ if (!cam)
+ return -ENOMEM;
+
+ /* We are called with current camera crop, initialise subrect with it */
+ cam->rect = rect;
+ cam->subrect = rect;
+
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ icd->host_priv = cam;
+ } else {
+ cam = icd->host_priv;
+ }
+
/* Beginning of a pass */
if (!idx)
- icd->host_priv = NULL;
-
- 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:
- if (icd->host_priv)
- goto add_single_format;
+ cam->extra_fmt = NULL;
+
+ switch (code) {
+ case V4L2_MBUS_FMT_YUYV8_2X8_BE:
+ case V4L2_MBUS_FMT_YVYU8_2X8_BE:
+ case V4L2_MBUS_FMT_YUYV8_2X8_LE:
+ case V4L2_MBUS_FMT_YVYU8_2X8_LE:
+ if (cam->extra_fmt)
+ break;
/*
* Our case is simple so far: for any of the above four camera
* the host_priv pointer and check whether the format you're
* going to add now is already there.
*/
- icd->host_priv = (void *)sh_mobile_ceu_formats;
+ cam->extra_fmt = sh_mobile_ceu_formats;
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->host_fmt = &sh_mobile_ceu_formats[k];
+ xlate->code = code;
xlate++;
- dev_dbg(&ici->dev, "Providing format %s using %s\n",
- sh_mobile_ceu_formats[k].name,
- icd->formats[idx].name);
+ dev_dbg(dev, "Providing format %s using code %d\n",
+ sh_mobile_ceu_formats[k].name, code);
}
+ break;
default:
-add_single_format:
- /* 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);
- }
+ if (!sh_mobile_ceu_packing_supported(fmt))
+ return 0;
+ }
+
+ /* Generic pass-through */
+ formats++;
+ if (xlate) {
+ xlate->host_fmt = fmt;
+ xlate->code = code;
+ xlate++;
+ dev_dbg(dev, "Providing format %s in pass-through mode\n",
+ xlate->host_fmt->name);
}
return formats;
}
+static void sh_mobile_ceu_put_formats(struct soc_camera_device *icd)
+{
+ kfree(icd->host_priv);
+ icd->host_priv = NULL;
+}
+
+/* Check if any dimension of r1 is smaller than respective one of r2 */
+static bool is_smaller(struct v4l2_rect *r1, struct v4l2_rect *r2)
+{
+ return r1->width < r2->width || r1->height < r2->height;
+}
+
+/* Check if r1 fails to cover r2 */
+static bool is_inside(struct v4l2_rect *r1, struct v4l2_rect *r2)
+{
+ return r1->left > r2->left || r1->top > r2->top ||
+ r1->left + r1->width < r2->left + r2->width ||
+ r1->top + r1->height < r2->top + r2->height;
+}
+
+static unsigned int scale_down(unsigned int size, unsigned int scale)
+{
+ return (size * 4096 + scale / 2) / scale;
+}
+
+static unsigned int calc_generic_scale(unsigned int input, unsigned int output)
+{
+ return (input * 4096 + output / 2) / output;
+}
+
+/* Get and store current client crop */
+static int client_g_rect(struct v4l2_subdev *sd, struct v4l2_rect *rect)
+{
+ struct v4l2_crop crop;
+ struct v4l2_cropcap cap;
+ int ret;
+
+ crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, g_crop, &crop);
+ if (!ret) {
+ *rect = crop.c;
+ return ret;
+ }
+
+ /* Camera driver doesn't support .g_crop(), assume default rectangle */
+ cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (!ret)
+ *rect = cap.defrect;
+
+ return ret;
+}
+
+/* Client crop has changed, update our sub-rectangle to remain within the area */
+static void update_subrect(struct sh_mobile_ceu_cam *cam)
+{
+ struct v4l2_rect *rect = &cam->rect, *subrect = &cam->subrect;
+
+ if (rect->width < subrect->width)
+ subrect->width = rect->width;
+
+ if (rect->height < subrect->height)
+ subrect->height = rect->height;
+
+ if (rect->left > subrect->left)
+ subrect->left = rect->left;
+ else if (rect->left + rect->width >
+ subrect->left + subrect->width)
+ subrect->left = rect->left + rect->width -
+ subrect->width;
+
+ if (rect->top > subrect->top)
+ subrect->top = rect->top;
+ else if (rect->top + rect->height >
+ subrect->top + subrect->height)
+ subrect->top = rect->top + rect->height -
+ subrect->height;
+}
+
+/*
+ * The common for both scaling and cropping iterative approach is:
+ * 1. try if the client can produce exactly what requested by the user
+ * 2. if (1) failed, try to double the client image until we get one big enough
+ * 3. if (2) failed, try to request the maximum image
+ */
+static int client_s_crop(struct soc_camera_device *icd, struct v4l2_crop *crop,
+ struct v4l2_crop *cam_crop)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c;
+ struct device *dev = sd->v4l2_dev->dev;
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct v4l2_cropcap cap;
+ int ret;
+ unsigned int width, height;
+
+ v4l2_subdev_call(sd, video, s_crop, crop);
+ ret = client_g_rect(sd, cam_rect);
+ if (ret < 0)
+ return ret;
+
+ /*
+ * Now cam_crop contains the current camera input rectangle, and it must
+ * be within camera cropcap bounds
+ */
+ if (!memcmp(rect, cam_rect, sizeof(*rect))) {
+ /* Even if camera S_CROP failed, but camera rectangle matches */
+ dev_dbg(dev, "Camera S_CROP successful for %dx%d@%d:%d\n",
+ rect->width, rect->height, rect->left, rect->top);
+ cam->rect = *cam_rect;
+ return 0;
+ }
+
+ /* Try to fix cropping, that camera hasn't managed to set */
+ dev_geo(dev, "Fix camera S_CROP for %dx%d@%d:%d to %dx%d@%d:%d\n",
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top,
+ rect->width, rect->height, rect->left, rect->top);
+
+ /* We need sensor maximum rectangle */
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (ret < 0)
+ return ret;
+
+ /* Put user requested rectangle within sensor bounds */
+ soc_camera_limit_side(&rect->left, &rect->width, cap.bounds.left, 2,
+ cap.bounds.width);
+ soc_camera_limit_side(&rect->top, &rect->height, cap.bounds.top, 4,
+ cap.bounds.height);
+
+ /*
+ * Popular special case - some cameras can only handle fixed sizes like
+ * QVGA, VGA,... Take care to avoid infinite loop.
+ */
+ width = max(cam_rect->width, 2);
+ height = max(cam_rect->height, 2);
+
+ /*
+ * Loop as long as sensor is not covering the requested rectangle and
+ * is still within its bounds
+ */
+ while (!ret && (is_smaller(cam_rect, rect) ||
+ is_inside(cam_rect, rect)) &&
+ (cap.bounds.width > width || cap.bounds.height > height)) {
+
+ width *= 2;
+ height *= 2;
+
+ cam_rect->width = width;
+ cam_rect->height = height;
+
+ /*
+ * We do not know what capabilities the camera has to set up
+ * left and top borders. We could try to be smarter in iterating
+ * them, e.g., if camera current left is to the right of the
+ * target left, set it to the middle point between the current
+ * left and minimum left. But that would add too much
+ * complexity: we would have to iterate each border separately.
+ * Instead we just drop to the left and top bounds.
+ */
+ if (cam_rect->left > rect->left)
+ cam_rect->left = cap.bounds.left;
+
+ if (cam_rect->left + cam_rect->width < rect->left + rect->width)
+ cam_rect->width = rect->left + rect->width -
+ cam_rect->left;
+
+ if (cam_rect->top > rect->top)
+ cam_rect->top = cap.bounds.top;
+
+ if (cam_rect->top + cam_rect->height < rect->top + rect->height)
+ cam_rect->height = rect->top + rect->height -
+ cam_rect->top;
+
+ v4l2_subdev_call(sd, video, s_crop, cam_crop);
+ ret = client_g_rect(sd, cam_rect);
+ dev_geo(dev, "Camera S_CROP %d for %dx%d@%d:%d\n", ret,
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+ }
+
+ /* S_CROP must not modify the rectangle */
+ if (is_smaller(cam_rect, rect) || is_inside(cam_rect, rect)) {
+ /*
+ * The camera failed to configure a suitable cropping,
+ * we cannot use the current rectangle, set to max
+ */
+ *cam_rect = cap.bounds;
+ v4l2_subdev_call(sd, video, s_crop, cam_crop);
+ ret = client_g_rect(sd, cam_rect);
+ dev_geo(dev, "Camera S_CROP %d for max %dx%d@%d:%d\n", ret,
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+ }
+
+ if (!ret) {
+ cam->rect = *cam_rect;
+ update_subrect(cam);
+ }
+
+ return ret;
+}
+
+/* Iterative s_mbus_fmt, also updates cached client crop on success */
+static int client_s_fmt(struct soc_camera_device *icd,
+ struct v4l2_mbus_framefmt *mf, bool ceu_can_scale)
+{
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->dev.parent;
+ unsigned int width = mf->width, height = mf->height, tmp_w, tmp_h;
+ unsigned int max_width, max_height;
+ struct v4l2_cropcap cap;
+ int ret;
+
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf);
+ if (ret < 0)
+ return ret;
+
+ dev_geo(dev, "camera scaled to %ux%u\n", mf->width, mf->height);
+
+ if ((width == mf->width && height == mf->height) || !ceu_can_scale)
+ goto update_cache;
+
+ cap.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+ ret = v4l2_subdev_call(sd, video, cropcap, &cap);
+ if (ret < 0)
+ return ret;
+
+ max_width = min(cap.bounds.width, 2560);
+ max_height = min(cap.bounds.height, 1920);
+
+ /* Camera set a format, but geometry is not precise, try to improve */
+ tmp_w = mf->width;
+ tmp_h = mf->height;
+
+ /* width <= max_width && height <= max_height - guaranteed by try_fmt */
+ while ((width > tmp_w || height > tmp_h) &&
+ tmp_w < max_width && tmp_h < max_height) {
+ tmp_w = min(2 * tmp_w, max_width);
+ tmp_h = min(2 * tmp_h, max_height);
+ mf->width = tmp_w;
+ mf->height = tmp_h;
+ ret = v4l2_subdev_call(sd, video, s_mbus_fmt, mf);
+ dev_geo(dev, "Camera scaled to %ux%u\n",
+ mf->width, mf->height);
+ if (ret < 0) {
+ /* This shouldn't happen */
+ dev_err(dev, "Client failed to set format: %d\n", ret);
+ return ret;
+ }
+ }
+
+update_cache:
+ /* Update cache */
+ ret = client_g_rect(sd, &cam->rect);
+ if (ret < 0)
+ return ret;
+
+ update_subrect(cam);
+
+ return 0;
+}
+
+/**
+ * @width - on output: user width, mapped back to input
+ * @height - on output: user height, mapped back to input
+ * @mf - in- / output camera output window
+ */
+static int client_scale(struct soc_camera_device *icd,
+ struct v4l2_mbus_framefmt *mf,
+ unsigned int *width, unsigned int *height,
+ bool ceu_can_scale)
+{
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct device *dev = icd->dev.parent;
+ struct v4l2_mbus_framefmt mf_tmp = *mf;
+ unsigned int scale_h, scale_v;
+ int ret;
+
+ /*
+ * 5. Apply iterative camera S_FMT for camera user window (also updates
+ * client crop cache and the imaginary sub-rectangle).
+ */
+ ret = client_s_fmt(icd, &mf_tmp, ceu_can_scale);
+ if (ret < 0)
+ return ret;
+
+ dev_geo(dev, "5: camera scaled to %ux%u\n",
+ mf_tmp.width, mf_tmp.height);
+
+ /* 6. Retrieve camera output window (g_fmt) */
+
+ /* unneeded - it is already in "mf_tmp" */
+
+ /* 7. Calculate new client scales. */
+ scale_h = calc_generic_scale(cam->rect.width, mf_tmp.width);
+ scale_v = calc_generic_scale(cam->rect.height, mf_tmp.height);
+
+ mf->width = mf_tmp.width;
+ mf->height = mf_tmp.height;
+ mf->colorspace = mf_tmp.colorspace;
+
+ /*
+ * 8. Calculate new CEU crop - apply camera scales to previously
+ * updated "effective" crop.
+ */
+ *width = scale_down(cam->subrect.width, scale_h);
+ *height = scale_down(cam->subrect.height, scale_v);
+
+ dev_geo(dev, "8: new client sub-window %ux%u\n", *width, *height);
+
+ return 0;
+}
+
+/*
+ * CEU can scale and crop, but we don't want to waste bandwidth and kill the
+ * framerate by always requesting the maximum image from the client. See
+ * Documentation/video4linux/sh_mobile_camera_ceu.txt for a description of
+ * scaling and cropping algorithms and for the meaning of referenced here steps.
+ */
+static int sh_mobile_ceu_set_crop(struct soc_camera_device *icd,
+ struct v4l2_crop *a)
+{
+ struct v4l2_rect *rect = &a->c;
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ struct v4l2_crop cam_crop;
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct v4l2_rect *cam_rect = &cam_crop.c;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct device *dev = icd->dev.parent;
+ struct v4l2_mbus_framefmt mf;
+ unsigned int scale_cam_h, scale_cam_v, scale_ceu_h, scale_ceu_v,
+ out_width, out_height, scale_h, scale_v;
+ int interm_width, interm_height;
+ u32 capsr, cflcr;
+ int ret;
+
+ dev_geo(dev, "S_CROP(%ux%u@%u:%u)\n", rect->width, rect->height,
+ rect->left, rect->top);
+
+ /* During camera cropping its output window can change too, stop CEU */
+ capsr = capture_save_reset(pcdev);
+ dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr);
+
+ /* 1. - 2. Apply iterative camera S_CROP for new input window. */
+ ret = client_s_crop(icd, a, &cam_crop);
+ if (ret < 0)
+ return ret;
+
+ dev_geo(dev, "1-2: camera cropped to %ux%u@%u:%u\n",
+ cam_rect->width, cam_rect->height,
+ cam_rect->left, cam_rect->top);
+
+ /* On success cam_crop contains current camera crop */
+
+ /* 3. Retrieve camera output window */
+ ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf);
+ if (ret < 0)
+ return ret;
+
+ if (mf.width > 2560 || mf.height > 1920)
+ return -EINVAL;
+
+ /* Cache camera output window */
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ /* 4. Calculate camera scales */
+ scale_cam_h = calc_generic_scale(cam_rect->width, mf.width);
+ scale_cam_v = calc_generic_scale(cam_rect->height, mf.height);
+
+ /* Calculate intermediate window */
+ interm_width = scale_down(rect->width, scale_cam_h);
+ interm_height = scale_down(rect->height, scale_cam_v);
+
+ if (pcdev->image_mode) {
+ out_width = min(interm_width, icd->user_width);
+ out_height = min(interm_height, icd->user_height);
+ } else {
+ out_width = interm_width;
+ out_height = interm_height;
+ }
+
+ /*
+ * 5. Calculate CEU scales from camera scales from results of (5) and
+ * the user window
+ */
+ scale_ceu_h = calc_scale(interm_width, &out_width);
+ scale_ceu_v = calc_scale(interm_height, &out_height);
+
+ /* Calculate camera scales */
+ scale_h = calc_generic_scale(cam_rect->width, out_width);
+ scale_v = calc_generic_scale(cam_rect->height, out_height);
+
+ dev_geo(dev, "5: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v);
+
+ /* Apply CEU scales. */
+ cflcr = scale_ceu_h | (scale_ceu_v << 16);
+ if (cflcr != pcdev->cflcr) {
+ pcdev->cflcr = cflcr;
+ ceu_write(pcdev, CFLCR, cflcr);
+ }
+
+ icd->user_width = out_width;
+ icd->user_height = out_height;
+ cam->ceu_left = scale_down(rect->left - cam_rect->left, scale_h) & ~1;
+ cam->ceu_top = scale_down(rect->top - cam_rect->top, scale_v) & ~1;
+
+ /* 6. Use CEU cropping to crop to the new window. */
+ sh_mobile_ceu_set_rect(icd);
+
+ cam->subrect = *rect;
+
+ dev_geo(dev, "6: CEU cropped to %ux%u@%u:%u\n",
+ icd->user_width, icd->user_height,
+ cam->ceu_left, cam->ceu_top);
+
+ /* Restore capture */
+ if (pcdev->active)
+ capsr |= 1;
+ capture_restore(pcdev, capsr);
+
+ /* Even if only camera cropping succeeded */
+ return ret;
+}
+
+static int sh_mobile_ceu_get_crop(struct soc_camera_device *icd,
+ struct v4l2_crop *a)
+{
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+
+ a->type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+ a->c = cam->subrect;
+
+ return 0;
+}
+
+/*
+ * Calculate real client output window by applying new scales to the current
+ * client crop. New scales are calculated from the requested output format and
+ * CEU crop, mapped backed onto the client input (subrect).
+ */
+static void calculate_client_output(struct soc_camera_device *icd,
+ struct v4l2_pix_format *pix, struct v4l2_mbus_framefmt *mf)
+{
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct device *dev = icd->dev.parent;
+ struct v4l2_rect *cam_subrect = &cam->subrect;
+ unsigned int scale_v, scale_h;
+
+ if (cam_subrect->width == cam->rect.width &&
+ cam_subrect->height == cam->rect.height) {
+ /* No sub-cropping */
+ mf->width = pix->width;
+ mf->height = pix->height;
+ return;
+ }
+
+ /* 1.-2. Current camera scales and subwin - cached. */
+
+ dev_geo(dev, "2: subwin %ux%u@%u:%u\n",
+ cam_subrect->width, cam_subrect->height,
+ cam_subrect->left, cam_subrect->top);
+
+ /*
+ * 3. Calculate new combined scales from input sub-window to requested
+ * user window.
+ */
+
+ /*
+ * TODO: CEU cannot scale images larger than VGA to smaller than SubQCIF
+ * (128x96) or larger than VGA
+ */
+ scale_h = calc_generic_scale(cam_subrect->width, pix->width);
+ scale_v = calc_generic_scale(cam_subrect->height, pix->height);
+
+ dev_geo(dev, "3: scales %u:%u\n", scale_h, scale_v);
+
+ /*
+ * 4. Calculate client output window by applying combined scales to real
+ * input window.
+ */
+ mf->width = scale_down(cam->rect.width, scale_h);
+ mf->height = scale_down(cam->rect.height, scale_v);
+}
+
+/* Similar to set_crop multistage iterative algorithm */
static int sh_mobile_ceu_set_fmt(struct soc_camera_device *icd,
- __u32 pixfmt, struct v4l2_rect *rect)
+ struct v4l2_format *f)
{
struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ struct sh_mobile_ceu_cam *cam = icd->host_priv;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_mbus_framefmt mf;
+ struct device *dev = icd->dev.parent;
+ __u32 pixfmt = pix->pixelformat;
const struct soc_camera_format_xlate *xlate;
+ unsigned int ceu_sub_width, ceu_sub_height;
+ u16 scale_v, scale_h;
int ret;
+ bool image_mode;
+ enum v4l2_field field;
- if (!pixfmt)
- return icd->ops->set_fmt(icd, pixfmt, rect);
+ dev_geo(dev, "S_FMT(pix=0x%x, %ux%u)\n", pixfmt, pix->width, pix->height);
+
+ switch (pix->field) {
+ default:
+ pix->field = V4L2_FIELD_NONE;
+ /* fall-through */
+ case V4L2_FIELD_INTERLACED_TB:
+ case V4L2_FIELD_INTERLACED_BT:
+ case V4L2_FIELD_NONE:
+ field = pix->field;
+ break;
+ case V4L2_FIELD_INTERLACED:
+ field = V4L2_FIELD_INTERLACED_TB;
+ break;
+ }
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
- dev_warn(&ici->dev, "Format %x not found\n", pixfmt);
+ dev_warn(dev, "Format %x not found\n", pixfmt);
return -EINVAL;
}
- ret = icd->ops->set_fmt(icd, xlate->cam_fmt->fourcc, rect);
+ /* 1.-4. Calculate client output geometry */
+ calculate_client_output(icd, &f->fmt.pix, &mf);
+ mf.field = pix->field;
+ mf.colorspace = pix->colorspace;
+ mf.code = xlate->code;
- if (!ret) {
- icd->buswidth = xlate->buswidth;
- icd->current_fmt = xlate->host_fmt;
- pcdev->camera_fmt = xlate->cam_fmt;
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ image_mode = true;
+ break;
+ default:
+ image_mode = false;
}
- return ret;
+ dev_geo(dev, "4: request camera output %ux%u\n", mf.width, mf.height);
+
+ /* 5. - 9. */
+ ret = client_scale(icd, &mf, &ceu_sub_width, &ceu_sub_height,
+ image_mode && V4L2_FIELD_NONE == field);
+
+ dev_geo(dev, "5-9: client scale return %d\n", ret);
+
+ /* Done with the camera. Now see if we can improve the result */
+
+ dev_geo(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
+ ret, mf.width, mf.height, pix->width, pix->height);
+ if (ret < 0)
+ return ret;
+
+ if (mf.code != xlate->code)
+ return -EINVAL;
+
+ /* 9. Prepare CEU crop */
+ cam->width = mf.width;
+ cam->height = mf.height;
+
+ /* 10. Use CEU scaling to scale to the requested user window. */
+
+ /* We cannot scale up */
+ if (pix->width > ceu_sub_width)
+ ceu_sub_width = pix->width;
+
+ if (pix->height > ceu_sub_height)
+ ceu_sub_height = pix->height;
+
+ pix->colorspace = mf.colorspace;
+
+ if (image_mode) {
+ /* Scale pix->{width x height} down to width x height */
+ scale_h = calc_scale(ceu_sub_width, &pix->width);
+ scale_v = calc_scale(ceu_sub_height, &pix->height);
+ } else {
+ pix->width = ceu_sub_width;
+ pix->height = ceu_sub_height;
+ scale_h = 0;
+ scale_v = 0;
+ }
+
+ pcdev->cflcr = scale_h | (scale_v << 16);
+
+ /*
+ * We have calculated CFLCR, the actual configuration will be performed
+ * in sh_mobile_ceu_set_bus_param()
+ */
+
+ dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n",
+ ceu_sub_width, scale_h, pix->width,
+ ceu_sub_height, scale_v, pix->height);
+
+ cam->code = xlate->code;
+ icd->current_fmt = xlate;
+
+ pcdev->field = field;
+ pcdev->image_mode = image_mode;
+
+ return 0;
}
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;
+ struct v4l2_pix_format *pix = &f->fmt.pix;
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+ struct v4l2_mbus_framefmt mf;
+ __u32 pixfmt = pix->pixelformat;
+ int width, height;
int ret;
xlate = soc_camera_xlate_by_fourcc(icd, pixfmt);
if (!xlate) {
- dev_warn(&ici->dev, "Format %x not found\n", pixfmt);
+ dev_warn(icd->dev.parent, "Format %x not found\n", pixfmt);
return -EINVAL;
}
/* FIXME: calculate using depth and bus width */
- if (f->fmt.pix.height < 4)
- f->fmt.pix.height = 4;
- if (f->fmt.pix.height > 1920)
- f->fmt.pix.height = 1920;
- if (f->fmt.pix.width < 2)
- f->fmt.pix.width = 2;
- if (f->fmt.pix.width > 2560)
- f->fmt.pix.width = 2560;
- 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;
+ v4l_bound_align_image(&pix->width, 2, 2560, 1,
+ &pix->height, 4, 1920, 2, 0);
+
+ width = pix->width;
+ height = pix->height;
+
+ pix->bytesperline = soc_mbus_bytes_per_line(width, xlate->host_fmt);
+ if ((int)pix->bytesperline < 0)
+ return pix->bytesperline;
+ pix->sizeimage = height * pix->bytesperline;
/* limit to sensor capabilities */
- ret = icd->ops->try_fmt(icd, f);
+ mf.width = pix->width;
+ mf.height = pix->height;
+ mf.field = pix->field;
+ mf.code = xlate->code;
+ mf.colorspace = pix->colorspace;
+
+ ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
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;
+ pix->width = mf.width;
+ pix->height = mf.height;
+ pix->field = mf.field;
+ pix->colorspace = mf.colorspace;
+
+ switch (pixfmt) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ /* FIXME: check against rect_max after converting soc-camera */
+ /* We can scale precisely, need a bigger image from camera */
+ if (pix->width < width || pix->height < height) {
+ /*
+ * We presume, the sensor behaves sanely, i.e., if
+ * requested a bigger rectangle, it will not return a
+ * smaller one.
+ */
+ mf.width = 2560;
+ mf.height = 1920;
+ ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
+ if (ret < 0) {
+ /* Shouldn't actually happen... */
+ dev_err(icd->dev.parent,
+ "FIXME: client try_fmt() = %d\n", ret);
+ return ret;
+ }
+ }
+ /* We will scale exactly */
+ if (mf.width > width)
+ pix->width = width;
+ if (mf.height > height)
+ pix->height = height;
}
return ret;
{
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 sh_mobile_ceu_buffer *buf;
videobuf_queue_dma_contig_init(q,
&sh_mobile_ceu_videobuf_ops,
- &ici->dev, &pcdev->lock,
+ icd->dev.parent, &pcdev->lock,
V4L2_BUF_TYPE_VIDEO_CAPTURE,
- V4L2_FIELD_ANY,
+ pcdev->field,
sizeof(struct sh_mobile_ceu_buffer),
icd);
}
+static int sh_mobile_ceu_get_parm(struct soc_camera_device *icd,
+ struct v4l2_streamparm *parm)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+
+ return v4l2_subdev_call(sd, video, g_parm, parm);
+}
+
+static int sh_mobile_ceu_set_parm(struct soc_camera_device *icd,
+ struct v4l2_streamparm *parm)
+{
+ struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+
+ return v4l2_subdev_call(sd, video, s_parm, parm);
+}
+
+static int sh_mobile_ceu_get_ctrl(struct soc_camera_device *icd,
+ struct v4l2_control *ctrl)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+ u32 val;
+
+ switch (ctrl->id) {
+ case V4L2_CID_SHARPNESS:
+ val = ceu_read(pcdev, CLFCR);
+ ctrl->value = val ^ 1;
+ return 0;
+ }
+ return -ENOIOCTLCMD;
+}
+
+static int sh_mobile_ceu_set_ctrl(struct soc_camera_device *icd,
+ struct v4l2_control *ctrl)
+{
+ struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+ struct sh_mobile_ceu_dev *pcdev = ici->priv;
+
+ switch (ctrl->id) {
+ case V4L2_CID_SHARPNESS:
+ switch (icd->current_fmt->host_fmt->fourcc) {
+ case V4L2_PIX_FMT_NV12:
+ case V4L2_PIX_FMT_NV21:
+ case V4L2_PIX_FMT_NV16:
+ case V4L2_PIX_FMT_NV61:
+ ceu_write(pcdev, CLFCR, !ctrl->value);
+ return 0;
+ }
+ return -EINVAL;
+ }
+ return -ENOIOCTLCMD;
+}
+
+static const struct v4l2_queryctrl sh_mobile_ceu_controls[] = {
+ {
+ .id = V4L2_CID_SHARPNESS,
+ .type = V4L2_CTRL_TYPE_BOOLEAN,
+ .name = "Low-pass filter",
+ .minimum = 0,
+ .maximum = 1,
+ .step = 1,
+ .default_value = 0,
+ },
+};
+
static struct soc_camera_host_ops sh_mobile_ceu_host_ops = {
.owner = THIS_MODULE,
.add = sh_mobile_ceu_add_device,
.remove = sh_mobile_ceu_remove_device,
.get_formats = sh_mobile_ceu_get_formats,
+ .put_formats = sh_mobile_ceu_put_formats,
+ .get_crop = sh_mobile_ceu_get_crop,
+ .set_crop = sh_mobile_ceu_set_crop,
.set_fmt = sh_mobile_ceu_set_fmt,
.try_fmt = sh_mobile_ceu_try_fmt,
+ .set_ctrl = sh_mobile_ceu_set_ctrl,
+ .get_ctrl = sh_mobile_ceu_get_ctrl,
+ .set_parm = sh_mobile_ceu_set_parm,
+ .get_parm = sh_mobile_ceu_get_parm,
.reqbufs = sh_mobile_ceu_reqbufs,
.poll = sh_mobile_ceu_poll,
.querycap = sh_mobile_ceu_querycap,
.set_bus_param = sh_mobile_ceu_set_bus_param,
.init_videobuf = sh_mobile_ceu_init_videobuf,
+ .controls = sh_mobile_ceu_controls,
+ .num_controls = ARRAY_SIZE(sh_mobile_ceu_controls),
};
-static int sh_mobile_ceu_probe(struct platform_device *pdev)
+static int __devinit sh_mobile_ceu_probe(struct platform_device *pdev)
{
struct sh_mobile_ceu_dev *pcdev;
struct resource *res;
void __iomem *base;
- char clk_name[8];
unsigned int irq;
int err = 0;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- if (!res || !irq) {
+ if (!res || (int)irq <= 0) {
dev_err(&pdev->dev, "Not enough CEU platform resources.\n");
err = -ENODEV;
goto exit;
goto exit;
}
- platform_set_drvdata(pdev, pcdev);
INIT_LIST_HEAD(&pcdev->capture);
spin_lock_init(&pcdev->lock);
goto exit_kfree;
}
- base = ioremap_nocache(res->start, res->end - res->start + 1);
+ base = ioremap_nocache(res->start, resource_size(res));
if (!base) {
err = -ENXIO;
dev_err(&pdev->dev, "Unable to ioremap CEU registers.\n");
pcdev->irq = irq;
pcdev->base = base;
pcdev->video_limit = 0; /* only enabled if second resource exists */
- pcdev->dev = &pdev->dev;
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
if (res) {
err = dma_declare_coherent_memory(&pdev->dev, res->start,
res->start,
- (res->end - res->start) + 1,
+ resource_size(res),
DMA_MEMORY_MAP |
DMA_MEMORY_EXCLUSIVE);
if (!err) {
goto exit_iounmap;
}
- pcdev->video_limit = (res->end - res->start) + 1;
+ pcdev->video_limit = resource_size(res);
}
/* request irq */
goto exit_release_mem;
}
- snprintf(clk_name, sizeof(clk_name), "ceu%d", pdev->id);
- pcdev->clk = clk_get(&pdev->dev, clk_name);
- if (IS_ERR(pcdev->clk)) {
- dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
- err = PTR_ERR(pcdev->clk);
- goto exit_free_irq;
- }
+ pm_suspend_ignore_children(&pdev->dev, true);
+ pm_runtime_enable(&pdev->dev);
+ pm_runtime_resume(&pdev->dev);
pcdev->ici.priv = pcdev;
- pcdev->ici.dev.parent = &pdev->dev;
+ pcdev->ici.v4l2_dev.dev = &pdev->dev;
pcdev->ici.nr = pdev->id;
pcdev->ici.drv_name = dev_name(&pdev->dev);
pcdev->ici.ops = &sh_mobile_ceu_host_ops;
return 0;
exit_free_clk:
- clk_put(pcdev->clk);
-exit_free_irq:
+ pm_runtime_disable(&pdev->dev);
free_irq(pcdev->irq, pcdev);
exit_release_mem:
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
return err;
}
-static int sh_mobile_ceu_remove(struct platform_device *pdev)
+static int __devexit sh_mobile_ceu_remove(struct platform_device *pdev)
{
- struct sh_mobile_ceu_dev *pcdev = platform_get_drvdata(pdev);
+ struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
+ struct sh_mobile_ceu_dev *pcdev = container_of(soc_host,
+ struct sh_mobile_ceu_dev, ici);
- soc_camera_host_unregister(&pcdev->ici);
- clk_put(pcdev->clk);
+ soc_camera_host_unregister(soc_host);
+ pm_runtime_disable(&pdev->dev);
free_irq(pcdev->irq, pcdev);
if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
dma_release_declared_memory(&pdev->dev);
return 0;
}
+static int sh_mobile_ceu_runtime_nop(struct device *dev)
+{
+ /* Runtime PM callback shared between ->runtime_suspend()
+ * and ->runtime_resume(). Simply returns success.
+ *
+ * This driver re-initializes all registers after
+ * pm_runtime_get_sync() anyway so there is no need
+ * to save and restore registers here.
+ */
+ return 0;
+}
+
+static const struct dev_pm_ops sh_mobile_ceu_dev_pm_ops = {
+ .runtime_suspend = sh_mobile_ceu_runtime_nop,
+ .runtime_resume = sh_mobile_ceu_runtime_nop,
+};
+
static struct platform_driver sh_mobile_ceu_driver = {
.driver = {
.name = "sh_mobile_ceu",
+ .pm = &sh_mobile_ceu_dev_pm_ops,
},
.probe = sh_mobile_ceu_probe,
- .remove = sh_mobile_ceu_remove,
+ .remove = __devexit_p(sh_mobile_ceu_remove),
};
static int __init sh_mobile_ceu_init(void)
MODULE_DESCRIPTION("SuperH Mobile CEU driver");
MODULE_AUTHOR("Magnus Damm");
MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sh_mobile_ceu");
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff