1 files changed, 978 insertions, 117 deletions

diff --git a/drivers/media/video/sh_mobile_ceu_camera.c b/drivers/media/video/sh_mobile_ceu_camera.c
index e86878deea71..5ab7c5aefd62 100644
--- a/drivers/media/video/sh_mobile_ceu_camera.c
+++ b/drivers/media/video/sh_mobile_ceu_camera.c
@@ -30,7 +30,7 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/videodev2.h>
-#include <linux/clk.h>
+#include <linux/pm_runtime.h>
 
 #include <media/v4l2-common.h>
 #include <media/v4l2-dev.h>
@@ -74,6 +74,13 @@
 #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 */
@@ -86,17 +93,27 @@ struct sh_mobile_ceu_dev {
 
 	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_interlaced;
 
 	struct sh_mobile_ceu_info *pdata;
 
+	u32 cflcr;
+
+	unsigned int is_interlaced:1;
+	unsigned int image_mode:1;
+	unsigned int is_16bit:1;
+};
+
+struct sh_mobile_ceu_cam {
+	struct v4l2_rect ceu_rect;
+	unsigned int cam_width;
+	unsigned int cam_height;
+	const struct soc_camera_data_format *extra_fmt;
 	const struct soc_camera_data_format *camera_fmt;
 };
 
@@ -147,7 +164,8 @@ static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq,
 	struct sh_mobile_ceu_dev *pcdev = ici->priv;
 	int bytes_per_pixel = (icd->current_fmt->depth + 7) >> 3;
 
-	*size = PAGE_ALIGN(icd->width * icd->height * bytes_per_pixel);
+	*size = PAGE_ALIGN(icd->user_width * icd->user_height *
+			   bytes_per_pixel);
 
 	if (0 == *count)
 		*count = 2;
@@ -157,7 +175,7 @@ static int sh_mobile_ceu_videobuf_setup(struct videobuf_queue *vq,
 			(*count)--;
 	}
 
-	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;
 }
@@ -166,8 +184,9 @@ static void free_buffer(struct videobuf_queue *vq,
 			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())
@@ -175,7 +194,7 @@ static void free_buffer(struct videobuf_queue *vq,
 
 	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;
 }
 
@@ -206,7 +225,7 @@ static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
 	phys_addr_top = videobuf_to_dma_contig(pcdev->active);
 	ceu_write(pcdev, CDAYR, phys_addr_top);
 	if (pcdev->is_interlaced) {
-		phys_addr_bottom = phys_addr_top + icd->width;
+		phys_addr_bottom = phys_addr_top + icd->user_width;
 		ceu_write(pcdev, CDBYR, phys_addr_bottom);
 	}
 
@@ -215,10 +234,12 @@ static void sh_mobile_ceu_capture(struct sh_mobile_ceu_dev *pcdev)
 	case V4L2_PIX_FMT_NV21:
 	case V4L2_PIX_FMT_NV16:
 	case V4L2_PIX_FMT_NV61:
-		phys_addr_top += icd->width * icd->height;
+		phys_addr_top += icd->user_width *
+			icd->user_height;
 		ceu_write(pcdev, CDACR, phys_addr_top);
 		if (pcdev->is_interlaced) {
-			phys_addr_bottom = phys_addr_top + icd->width;
+			phys_addr_bottom = phys_addr_top +
+				icd->user_width;
 			ceu_write(pcdev, CDBCR, phys_addr_bottom);
 		}
 	}
@@ -237,7 +258,7 @@ static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
 
 	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 */
@@ -252,12 +273,12 @@ static int sh_mobile_ceu_videobuf_prepare(struct videobuf_queue *vq,
 	BUG_ON(NULL == icd->current_fmt);
 
 	if (buf->fmt	!= icd->current_fmt ||
-	    vb->width	!= icd->width ||
-	    vb->height	!= icd->height ||
+	    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;
+		vb->width	= icd->user_width;
+		vb->height	= icd->user_height;
 		vb->field	= field;
 		vb->state	= VIDEOBUF_NEEDS_INIT;
 	}
@@ -290,7 +311,7 @@ static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
 	struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
 	struct sh_mobile_ceu_dev *pcdev = ici->priv;
 
-	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;
@@ -305,6 +326,27 @@ static void sh_mobile_ceu_videobuf_queue(struct videobuf_queue *vq,
 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));
 }
 
@@ -324,6 +366,10 @@ static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
 	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))
@@ -338,6 +384,8 @@ static irqreturn_t sh_mobile_ceu_irq(int irq, void *data)
 	do_gettimeofday(&vb->ts);
 	vb->field_count++;
 	wake_up(&vb->done);
+
+out:
 	spin_unlock_irqrestore(&pcdev->lock, flags);
 
 	return IRQ_HANDLED;
@@ -348,19 +396,14 @@ 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;
 
 	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;
-
 	clk_enable(pcdev->clk);
 
 	ceu_write(pcdev, CAPSR, 1 << 16); /* reset */
@@ -368,8 +411,8 @@ static int sh_mobile_ceu_add_device(struct soc_camera_device *icd)
 		msleep(1);
 
 	pcdev->icd = icd;
-err:
-	return ret;
+
+	return 0;
 }
 
 /* Called with .video_lock held */
@@ -397,23 +440,149 @@ static void sh_mobile_ceu_remove_device(struct soc_camera_device *icd)
 
 	clk_disable(pcdev->clk);
 
-	icd->ops->release(icd);
-
-	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,
+				   unsigned int out_width,
+				   unsigned int out_height)
+{
+	struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent);
+	struct sh_mobile_ceu_cam *cam = icd->host_priv;
+	struct v4l2_rect *rect = &cam->ceu_rect;
+	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_dbg(icd->dev.parent, "Crop %ux%u@%u:%u\n",
+		rect->width, rect->height, rect->left, rect->top);
+
+	left_offset	= rect->left;
+	top_offset	= rect->top;
+
+	if (pcdev->image_mode) {
+		in_width = rect->width;
+		if (!pcdev->is_16bit) {
+			in_width *= 2;
+			left_offset *= 2;
+		}
+		width = cdwdr_width = out_width;
+	} else {
+		unsigned int w_factor = (icd->current_fmt->depth + 7) >> 3;
+
+		width = out_width * w_factor / 2;
+
+		if (!pcdev->is_16bit)
+			w_factor *= 2;
+
+		in_width = rect->width * w_factor / 2;
+		left_offset = left_offset * w_factor / 2;
+
+		cdwdr_width = width * 2;
+	}
+
+	height = out_height;
+	in_height = rect->height;
+	if (pcdev->is_interlaced) {
+		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,
@@ -427,10 +596,10 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 
 	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;
@@ -440,7 +609,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 	ceu_write(pcdev, CRCMPR, 0);
 
 	value = 0x00000010; /* data fetch by default */
-	yuv_mode = yuv_lineskip = 0;
+	yuv_lineskip = 0;
 
 	switch (icd->current_fmt->fourcc) {
 	case V4L2_PIX_FMT_NV12:
@@ -449,8 +618,7 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 		/* fall-through */
 	case V4L2_PIX_FMT_NV16:
 	case V4L2_PIX_FMT_NV61:
-		yuv_mode = 1;
-		switch (pcdev->camera_fmt->fourcc) {
+		switch (cam->camera_fmt->fourcc) {
 		case V4L2_PIX_FMT_UYVY:
 			value = 0x00000000; /* Cb0, Y0, Cr0, Y1 */
 			break;
@@ -474,36 +642,16 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 
 	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_interlaced ? 0x101 : 0);
 
+	sh_mobile_ceu_set_rect(icd, icd->user_width, icd->user_height);
 	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;
-	}
-
-	height = icd->height;
-	if (pcdev->is_interlaced) {
-		height /= 2;
-		cdwdr_width *= 2;
-	}
-
-	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 */
+	ceu_write(pcdev, CFLCR, pcdev->cflcr);
 
 	/* A few words about byte order (observed in Big Endian mode)
 	 *
@@ -522,10 +670,15 @@ static int sh_mobile_ceu_set_bus_param(struct soc_camera_device *icd,
 		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;
 }
@@ -575,24 +728,35 @@ static const struct soc_camera_data_format sh_mobile_ceu_formats[] = {
 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);
+	struct device *dev = icd->dev.parent;
 	int ret, k, n;
 	int formats = 0;
+	struct sh_mobile_ceu_cam *cam;
 
 	ret = sh_mobile_ceu_try_bus_param(icd);
 	if (ret < 0)
 		return 0;
 
+	if (!icd->host_priv) {
+		cam = kzalloc(sizeof(*cam), GFP_KERNEL);
+		if (!cam)
+			return -ENOMEM;
+
+		icd->host_priv = cam;
+	} else {
+		cam = icd->host_priv;
+	}
+
 	/* Beginning of a pass */
 	if (!idx)
-		icd->host_priv = NULL;
+		cam->extra_fmt = 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)
+		if (cam->extra_fmt)
 			goto add_single_format;
 
 		/*
@@ -604,7 +768,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx,
 		 * 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 = (void *)sh_mobile_ceu_formats;
 
 		n = ARRAY_SIZE(sh_mobile_ceu_formats);
 		formats += n;
@@ -613,7 +777,7 @@ static int sh_mobile_ceu_get_formats(struct soc_camera_device *icd, int idx,
 			xlate->cam_fmt = icd->formats + idx;
 			xlate->buswidth = icd->formats[idx].depth;
 			xlate++;
-			dev_dbg(ici->dev, "Providing format %s using %s\n",
+			dev_dbg(dev, "Providing format %s using %s\n",
 				sh_mobile_ceu_formats[k].name,
 				icd->formats[idx].name);
 		}
@@ -626,7 +790,7 @@ add_single_format:
 			xlate->cam_fmt = icd->formats + idx;
 			xlate->buswidth = icd->formats[idx].depth;
 			xlate++;
-			dev_dbg(ici->dev,
+			dev_dbg(dev,
 				"Providing format %s in pass-through mode\n",
 				icd->formats[idx].name);
 		}
@@ -635,82 +799,714 @@ add_single_format:
 	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 scale_up(unsigned int size, unsigned int scale)
+{
+	return (size * scale + 2048) / 4096;
+}
+
+static unsigned int calc_generic_scale(unsigned int input, unsigned int output)
+{
+	return (input * 4096 + output / 2) / output;
+}
+
+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 < 0)
+		return ret;
+
+	*rect = cap.defrect;
+
+	return ret;
+}
+
+/*
+ * 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 v4l2_subdev *sd, struct v4l2_crop *crop,
+			 struct v4l2_crop *cam_crop)
+{
+	struct v4l2_rect *rect = &crop->c, *cam_rect = &cam_crop->c;
+	struct device *dev = sd->v4l2_dev->dev;
+	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 %ux%u@%u:%u\n",
+			rect->width, rect->height, rect->left, rect->top);
+		return 0;
+	}
+
+	/* Try to fix cropping, that camera hasn't managed to set */
+	dev_geo(dev, "Fix camera S_CROP for %ux%u@%u:%u to %ux%u@%u:%u\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;
+
+	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);
+
+	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.
+		 */
+		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 %ux%u@%u:%u\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 %ux%u@%u:%u\n", ret,
+			cam_rect->width, cam_rect->height,
+			cam_rect->left, cam_rect->top);
+	}
+
+	return ret;
+}
+
+static int get_camera_scales(struct v4l2_subdev *sd, struct v4l2_rect *rect,
+			     unsigned int *scale_h, unsigned int *scale_v)
+{
+	struct v4l2_format f;
+	int ret;
+
+	f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	ret = v4l2_subdev_call(sd, video, g_fmt, &f);
+	if (ret < 0)
+		return ret;
+
+	*scale_h = calc_generic_scale(rect->width, f.fmt.pix.width);
+	*scale_v = calc_generic_scale(rect->height, f.fmt.pix.height);
+
+	return 0;
+}
+
+static int get_camera_subwin(struct soc_camera_device *icd,
+			     struct v4l2_rect *cam_subrect,
+			     unsigned int cam_hscale, unsigned int cam_vscale)
+{
+	struct sh_mobile_ceu_cam *cam = icd->host_priv;
+	struct v4l2_rect *ceu_rect = &cam->ceu_rect;
+
+	if (!ceu_rect->width) {
+		struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+		struct device *dev = icd->dev.parent;
+		struct v4l2_format f;
+		struct v4l2_pix_format *pix = &f.fmt.pix;
+		int ret;
+		/* First time */
+
+		f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+		ret = v4l2_subdev_call(sd, video, g_fmt, &f);
+		if (ret < 0)
+			return ret;
+
+		dev_geo(dev, "camera fmt %ux%u\n", pix->width, pix->height);
+
+		if (pix->width > 2560) {
+			ceu_rect->width	 = 2560;
+			ceu_rect->left	 = (pix->width - 2560) / 2;
+		} else {
+			ceu_rect->width	 = pix->width;
+			ceu_rect->left	 = 0;
+		}
+
+		if (pix->height > 1920) {
+			ceu_rect->height = 1920;
+			ceu_rect->top	 = (pix->height - 1920) / 2;
+		} else {
+			ceu_rect->height = pix->height;
+			ceu_rect->top	 = 0;
+		}
+
+		dev_geo(dev, "initialised CEU rect %ux%u@%u:%u\n",
+			ceu_rect->width, ceu_rect->height,
+			ceu_rect->left, ceu_rect->top);
+	}
+
+	cam_subrect->width	= scale_up(ceu_rect->width, cam_hscale);
+	cam_subrect->left	= scale_up(ceu_rect->left, cam_hscale);
+	cam_subrect->height	= scale_up(ceu_rect->height, cam_vscale);
+	cam_subrect->top	= scale_up(ceu_rect->top, cam_vscale);
+
+	return 0;
+}
+
+static int client_s_fmt(struct soc_camera_device *icd, struct v4l2_format *f,
+			bool ceu_can_scale)
+{
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct device *dev = icd->dev.parent;
+	struct v4l2_pix_format *pix = &f->fmt.pix;
+	unsigned int width = pix->width, height = pix->height, tmp_w, tmp_h;
+	unsigned int max_width, max_height;
+	struct v4l2_cropcap cap;
+	int ret;
+
+	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);
+
+	ret = v4l2_subdev_call(sd, video, s_fmt, f);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "camera scaled to %ux%u\n", pix->width, pix->height);
+
+	if ((width == pix->width && height == pix->height) || !ceu_can_scale)
+		return 0;
+
+	/* Camera set a format, but geometry is not precise, try to improve */
+	tmp_w = pix->width;
+	tmp_h = pix->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);
+		pix->width = tmp_w;
+		pix->height = tmp_h;
+		ret = v4l2_subdev_call(sd, video, s_fmt, f);
+		dev_geo(dev, "Camera scaled to %ux%u\n",
+			pix->width, pix->height);
+		if (ret < 0) {
+			/* This shouldn't happen */
+			dev_err(dev, "Client failed to set format: %d\n", ret);
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+/**
+ * @rect	- camera cropped rectangle
+ * @sub_rect	- CEU cropped rectangle, mapped back to camera input area
+ * @ceu_rect	- on output calculated CEU crop rectangle
+ */
+static int client_scale(struct soc_camera_device *icd, struct v4l2_rect *rect,
+			struct v4l2_rect *sub_rect, struct v4l2_rect *ceu_rect,
+			struct v4l2_format *f, bool ceu_can_scale)
+{
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct sh_mobile_ceu_cam *cam = icd->host_priv;
+	struct device *dev = icd->dev.parent;
+	struct v4l2_format f_tmp = *f;
+	struct v4l2_pix_format *pix_tmp = &f_tmp.fmt.pix;
+	unsigned int scale_h, scale_v;
+	int ret;
+
+	/* 5. Apply iterative camera S_FMT for camera user window. */
+	ret = client_s_fmt(icd, &f_tmp, ceu_can_scale);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "5: camera scaled to %ux%u\n",
+		pix_tmp->width, pix_tmp->height);
+
+	/* 6. Retrieve camera output window (g_fmt) */
+
+	/* unneeded - it is already in "f_tmp" */
+
+	/* 7. Calculate new camera scales. */
+	ret = get_camera_scales(sd, rect, &scale_h, &scale_v);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "7: camera scales %u:%u\n", scale_h, scale_v);
+
+	cam->cam_width		= pix_tmp->width;
+	cam->cam_height		= pix_tmp->height;
+	f->fmt.pix.width	= pix_tmp->width;
+	f->fmt.pix.height	= pix_tmp->height;
+
+	/*
+	 * 8. Calculate new CEU crop - apply camera scales to previously
+	 *    calculated "effective" crop.
+	 */
+	ceu_rect->left = scale_down(sub_rect->left, scale_h);
+	ceu_rect->width = scale_down(sub_rect->width, scale_h);
+	ceu_rect->top = scale_down(sub_rect->top, scale_v);
+	ceu_rect->height = scale_down(sub_rect->height, scale_v);
+
+	dev_geo(dev, "8: new CEU rect %ux%u@%u:%u\n",
+		ceu_rect->width, ceu_rect->height,
+		ceu_rect->left, ceu_rect->top);
+
+	return 0;
+}
+
+/* Get combined scales */
+static int get_scales(struct soc_camera_device *icd,
+		      unsigned int *scale_h, unsigned int *scale_v)
+{
+	struct sh_mobile_ceu_cam *cam = icd->host_priv;
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct v4l2_crop cam_crop;
+	unsigned int width_in, height_in;
+	int ret;
+
+	cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	ret = client_g_rect(sd, &cam_crop.c);
+	if (ret < 0)
+		return ret;
+
+	ret = get_camera_scales(sd, &cam_crop.c, scale_h, scale_v);
+	if (ret < 0)
+		return ret;
+
+	width_in = scale_up(cam->ceu_rect.width, *scale_h);
+	height_in = scale_up(cam->ceu_rect.height, *scale_v);
+
+	*scale_h = calc_generic_scale(cam->ceu_rect.width, icd->user_width);
+	*scale_v = calc_generic_scale(cam->ceu_rect.height, icd->user_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_rect *rect)
+				  struct v4l2_crop *a)
 {
-	return icd->ops->set_crop(icd, rect);
+	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, *ceu_rect = &cam->ceu_rect;
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct device *dev = icd->dev.parent;
+	struct v4l2_format f;
+	struct v4l2_pix_format *pix = &f.fmt.pix;
+	unsigned int scale_comb_h, scale_comb_v, scale_ceu_h, scale_ceu_v,
+		out_width, out_height;
+	u32 capsr, cflcr;
+	int ret;
+
+	/* 1. Calculate current combined scales. */
+	ret = get_scales(icd, &scale_comb_h, &scale_comb_v);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "1: combined scales %u:%u\n", scale_comb_h, scale_comb_v);
+
+	/* 2. Apply iterative camera S_CROP for new input window. */
+	ret = client_s_crop(sd, a, &cam_crop);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "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. If old combined scales applied to new crop produce an impossible
+	 *    user window, adjust scales to produce nearest possible window.
+	 */
+	out_width	= scale_down(rect->width, scale_comb_h);
+	out_height	= scale_down(rect->height, scale_comb_v);
+
+	if (out_width > 2560)
+		out_width = 2560;
+	else if (out_width < 2)
+		out_width = 2;
+
+	if (out_height > 1920)
+		out_height = 1920;
+	else if (out_height < 4)
+		out_height = 4;
+
+	dev_geo(dev, "3: Adjusted output %ux%u\n", out_width, out_height);
+
+	/* 4. Use G_CROP to retrieve actual input window: already in cam_crop */
+
+	/*
+	 * 5. Using actual input window and calculated combined scales calculate
+	 *    camera target output window.
+	 */
+	pix->width		= scale_down(cam_rect->width, scale_comb_h);
+	pix->height		= scale_down(cam_rect->height, scale_comb_v);
+
+	dev_geo(dev, "5: camera target %ux%u\n", pix->width, pix->height);
+
+	/* 6. - 9. */
+	pix->pixelformat	= cam->camera_fmt->fourcc;
+	pix->colorspace		= cam->camera_fmt->colorspace;
+
+	capsr = capture_save_reset(pcdev);
+	dev_dbg(dev, "CAPSR 0x%x, CFLCR 0x%x\n", capsr, pcdev->cflcr);
+
+	/* Make relative to camera rectangle */
+	rect->left		-= cam_rect->left;
+	rect->top		-= cam_rect->top;
+
+	f.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
+
+	ret = client_scale(icd, cam_rect, rect, ceu_rect, &f,
+			   pcdev->image_mode && !pcdev->is_interlaced);
+
+	dev_geo(dev, "6-9: %d\n", ret);
+
+	/* 10. Use CEU cropping to crop to the new window. */
+	sh_mobile_ceu_set_rect(icd, out_width, out_height);
+
+	dev_geo(dev, "10: CEU cropped to %ux%u@%u:%u\n",
+		ceu_rect->width, ceu_rect->height,
+		ceu_rect->left, ceu_rect->top);
+
+	/*
+	 * 11. Calculate CEU scales from camera scales from results of (10) and
+	 *     user window from (3)
+	 */
+	scale_ceu_h = calc_scale(ceu_rect->width, &out_width);
+	scale_ceu_v = calc_scale(ceu_rect->height, &out_height);
+
+	dev_geo(dev, "11: CEU scales %u:%u\n", scale_ceu_h, scale_ceu_v);
+
+	/* 12. Apply CEU scales. */
+	cflcr = scale_ceu_h | (scale_ceu_v << 16);
+	if (cflcr != pcdev->cflcr) {
+		pcdev->cflcr = cflcr;
+		ceu_write(pcdev, CFLCR, cflcr);
+	}
+
+	/* Restore capture */
+	if (pcdev->active)
+		capsr |= 1;
+	capture_restore(pcdev, capsr);
+
+	icd->user_width = out_width;
+	icd->user_height = out_height;
+
+	/* Even if only camera cropping succeeded */
+	return ret;
 }
 
+/* Similar to set_crop multistage iterative algorithm */
 static int sh_mobile_ceu_set_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;
-	__u32 pixfmt = f->fmt.pix.pixelformat;
-	const struct soc_camera_format_xlate *xlate;
+	struct sh_mobile_ceu_cam *cam = icd->host_priv;
+	struct v4l2_pix_format *pix = &f->fmt.pix;
 	struct v4l2_format cam_f = *f;
+	struct v4l2_pix_format *cam_pix = &cam_f.fmt.pix;
+	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
+	struct device *dev = icd->dev.parent;
+	__u32 pixfmt = pix->pixelformat;
+	const struct soc_camera_format_xlate *xlate;
+	struct v4l2_crop cam_crop;
+	struct v4l2_rect *cam_rect = &cam_crop.c, cam_subrect, ceu_rect;
+	unsigned int scale_cam_h, scale_cam_v;
+	u16 scale_v, scale_h;
 	int ret;
+	bool is_interlaced, image_mode;
+
+	switch (pix->field) {
+	case V4L2_FIELD_INTERLACED:
+		is_interlaced = true;
+		break;
+	case V4L2_FIELD_ANY:
+	default:
+		pix->field = V4L2_FIELD_NONE;
+		/* fall-through */
+	case V4L2_FIELD_NONE:
+		is_interlaced = false;
+		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;
 	}
 
-	cam_f.fmt.pix.pixelformat = xlate->cam_fmt->fourcc;
-	ret = icd->ops->set_fmt(icd, &cam_f);
+	/* 1. Calculate current camera scales. */
+	cam_crop.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
 
-	if (!ret) {
-		icd->buswidth = xlate->buswidth;
-		icd->current_fmt = xlate->host_fmt;
-		pcdev->camera_fmt = xlate->cam_fmt;
+	ret = client_g_rect(sd, cam_rect);
+	if (ret < 0)
+		return ret;
+
+	ret = get_camera_scales(sd, cam_rect, &scale_cam_h, &scale_cam_v);
+	if (ret < 0)
+		return ret;
+
+	dev_geo(dev, "1: camera scales %u:%u\n", scale_cam_h, scale_cam_v);
+
+	/*
+	 * 2. Calculate "effective" input crop (sensor subwindow) - CEU crop
+	 *    scaled back at current camera scales onto input window.
+	 */
+	ret = get_camera_subwin(icd, &cam_subrect, scale_cam_h, scale_cam_v);
+	if (ret < 0)
+		return ret;
+
+	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 "effective" input window to
+	 *    requested user window.
+	 */
+	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 camera output window by applying combined scales to real
+	 *    input window.
+	 */
+	cam_pix->width = scale_down(cam_rect->width, scale_h);
+	cam_pix->height = scale_down(cam_rect->height, scale_v);
+	cam_pix->pixelformat = xlate->cam_fmt->fourcc;
+
+	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: camera output %ux%u\n",
+		cam_pix->width, cam_pix->height);
+
+	/* 5. - 9. */
+	ret = client_scale(icd, cam_rect, &cam_subrect, &ceu_rect, &cam_f,
+			   image_mode && !is_interlaced);
+
+	dev_geo(dev, "5-9: client scale %d\n", ret);
+
+	/* Done with the camera. Now see if we can improve the result */
+
+	dev_dbg(dev, "Camera %d fmt %ux%u, requested %ux%u\n",
+		ret, cam_pix->width, cam_pix->height, pix->width, pix->height);
+	if (ret < 0)
+		return ret;
+
+	/* 10. Use CEU scaling to scale to the requested user window. */
+
+	/* We cannot scale up */
+	if (pix->width > cam_pix->width)
+		pix->width = cam_pix->width;
+	if (pix->width > ceu_rect.width)
+		pix->width = ceu_rect.width;
+
+	if (pix->height > cam_pix->height)
+		pix->height = cam_pix->height;
+	if (pix->height > ceu_rect.height)
+		pix->height = ceu_rect.height;
+
+	/* Let's rock: scale pix->{width x height} down to width x height */
+	scale_h = calc_scale(ceu_rect.width, &pix->width);
+	scale_v = calc_scale(ceu_rect.height, &pix->height);
+
+	dev_geo(dev, "10: W: %u : 0x%x = %u, H: %u : 0x%x = %u\n",
+		ceu_rect.width, scale_h, pix->width,
+		ceu_rect.height, scale_v, pix->height);
+
+	pcdev->cflcr = scale_h | (scale_v << 16);
+
+	icd->buswidth = xlate->buswidth;
+	icd->current_fmt = xlate->host_fmt;
+	cam->camera_fmt = xlate->cam_fmt;
+	cam->ceu_rect = ceu_rect;
+
+	pcdev->is_interlaced = is_interlaced;
+	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);
+	__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 */
 
-	v4l_bound_align_image(&f->fmt.pix.width, 2, 2560, 1,
-			      &f->fmt.pix.height, 4, 1920, 2, 0);
+	v4l_bound_align_image(&pix->width, 2, 2560, 1,
+			      &pix->height, 4, 1920, 2, 0);
 
-	f->fmt.pix.bytesperline = f->fmt.pix.width *
+	width = pix->width;
+	height = pix->height;
+
+	pix->bytesperline = pix->width *
 		DIV_ROUND_UP(xlate->host_fmt->depth, 8);
-	f->fmt.pix.sizeimage = f->fmt.pix.height * f->fmt.pix.bytesperline;
+	pix->sizeimage = pix->height * pix->bytesperline;
+
+	pix->pixelformat = xlate->cam_fmt->fourcc;
 
 	/* limit to sensor capabilities */
-	ret = icd->ops->try_fmt(icd, f);
+	ret = v4l2_subdev_call(sd, video, try_fmt, f);
+	pix->pixelformat = pixfmt;
 	if (ret < 0)
 		return ret;
 
-	switch (f->fmt.pix.field) {
-	case V4L2_FIELD_INTERLACED:
-		pcdev->is_interlaced = 1;
-		break;
-	case V4L2_FIELD_ANY:
-		f->fmt.pix.field = V4L2_FIELD_NONE;
-		/* fall-through */
-	case V4L2_FIELD_NONE:
-		pcdev->is_interlaced = 0;
-		break;
-	default:
-		ret = -EINVAL;
-		break;
+	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) {
+			int tmp_w = pix->width, tmp_h = pix->height;
+			pix->width = 2560;
+			pix->height = 1920;
+			ret = v4l2_subdev_call(sd, video, try_fmt, f);
+			if (ret < 0) {
+				/* Shouldn't actually happen... */
+				dev_err(icd->dev.parent,
+					"FIXME: try_fmt() returned %d\n", ret);
+				pix->width = tmp_w;
+				pix->height = tmp_h;
+			}
+		}
+		if (pix->width > width)
+			pix->width = width;
+		if (pix->height > height)
+			pix->height = height;
 	}
 
 	return ret;
@@ -770,7 +1566,7 @@ static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q,
 
 	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,
 				       pcdev->is_interlaced ?
 				       V4L2_FIELD_INTERLACED : V4L2_FIELD_NONE,
@@ -778,27 +1574,80 @@ static void sh_mobile_ceu_init_videobuf(struct videobuf_queue *q,
 				       icd);
 }
 
+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->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,
 	.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,
 	.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;
 
@@ -862,28 +1711,22 @@ static int sh_mobile_ceu_probe(struct platform_device *pdev)
 		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 = &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;
 
 	err = soc_camera_host_register(&pcdev->ici);
 	if (err)
-		goto exit_free_clk;
+		goto exit_free_irq;
 
 	return 0;
 
-exit_free_clk:
-	clk_put(pcdev->clk);
 exit_free_irq:
 	free_irq(pcdev->irq, pcdev);
 exit_release_mem:
@@ -897,14 +1740,13 @@ exit:
 	return err;
 }
 
-static int sh_mobile_ceu_remove(struct platform_device *pdev)
+static int __devexit sh_mobile_ceu_remove(struct platform_device *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(soc_host);
-	clk_put(pcdev->clk);
 	free_irq(pcdev->irq, pcdev);
 	if (platform_get_resource(pdev, IORESOURCE_MEM, 1))
 		dma_release_declared_memory(&pdev->dev);
@@ -913,12 +1755,30 @@ static int sh_mobile_ceu_remove(struct platform_device *pdev)
 	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 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		= __exit_p(sh_mobile_ceu_remove),
 };
 
 static int __init sh_mobile_ceu_init(void)
@@ -937,3 +1797,4 @@ module_exit(sh_mobile_ceu_exit);
 MODULE_DESCRIPTION("SuperH Mobile CEU driver");
 MODULE_AUTHOR("Magnus Damm");
 MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:sh_mobile_ceu");