[media] media: mx1_camera: Remove driver

That driver hasn't been really maintained for a long time. It doesn't
compile in any way, it includes non-existent headers, has no users,
and marked as "BROKEN" more than year. Due to these factors, mx1_camera
is now removed from the tree.

Signed-off-by: Alexander Shiyan <[e-mail]>
Signed-off-by: Guennadi Liakhovetski <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/media/platform/soc_camera/Kconfig

···
 	help
 	  This is a generic SoC camera platform driver, useful for testing
 
-config MX1_VIDEO
-	bool
-
-config VIDEO_MX1
-	tristate "i.MX1/i.MXL CMOS Sensor Interface driver"
-	depends on BROKEN
-	depends on VIDEO_DEV && ARCH_MX1 && SOC_CAMERA
-	select FIQ
-	select VIDEOBUF_DMA_CONTIG
-	select MX1_VIDEO
-	---help---
-	  This is a v4l2 driver for the i.MX1/i.MXL CMOS Sensor Interface
-
 config VIDEO_MX3
 	tristate "i.MX3x Camera Sensor Interface driver"
 	depends on VIDEO_DEV && MX3_IPU && SOC_CAMERA

drivers/media/platform/soc_camera/Makefile

···
 
 # soc-camera host drivers have to be linked after camera drivers
 obj-$(CONFIG_VIDEO_ATMEL_ISI)		+= atmel-isi.o
-obj-$(CONFIG_VIDEO_MX1)			+= mx1_camera.o
 obj-$(CONFIG_VIDEO_MX2)			+= mx2_camera.o
 obj-$(CONFIG_VIDEO_MX3)			+= mx3_camera.o
 obj-$(CONFIG_VIDEO_OMAP1)		+= omap1_camera.o

drivers/media/platform/soc_camera/mx1_camera.c

···
-/*
- * V4L2 Driver for i.MXL/i.MXL camera (CSI) host
- *
- * Copyright (C) 2008, Paulius Zaleckas <[e-mail]>
- * Copyright (C) 2009, Darius Augulis <[e-mail]>
- *
- * Based on PXA SoC camera driver
- * Copyright (C) 2006, Sascha Hauer, Pengutronix
- * Copyright (C) 2008, Guennadi Liakhovetski <[e-mail]>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/clk.h>
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/dma-mapping.h>
-#include <linux/errno.h>
-#include <linux/fs.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/io.h>
-#include <linux/kernel.h>
-#include <linux/mm.h>
-#include <linux/module.h>
-#include <linux/moduleparam.h>
-#include <linux/platform_device.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/time.h>
-#include <linux/videodev2.h>
-
-#include <media/soc_camera.h>
-#include <media/v4l2-common.h>
-#include <media/v4l2-dev.h>
-#include <media/videobuf-dma-contig.h>
-#include <media/soc_mediabus.h>
-
-#include <asm/dma.h>
-#include <asm/fiq.h>
-#include <mach/dma-mx1-mx2.h>
-#include <mach/hardware.h>
-#include <mach/irqs.h>
-#include <linux/platform_data/camera-mx1.h>
-
-/*
- * CSI registers
- */
-#define CSICR1		0x00			/* CSI Control Register 1 */
-#define CSISR		0x08			/* CSI Status Register */
-#define CSIRXR		0x10			/* CSI RxFIFO Register */
-
-#define CSICR1_RXFF_LEVEL(x)	(((x) & 0x3) << 19)
-#define CSICR1_SOF_POL		(1 << 17)
-#define CSICR1_SOF_INTEN	(1 << 16)
-#define CSICR1_MCLKDIV(x)	(((x) & 0xf) << 12)
-#define CSICR1_MCLKEN		(1 << 9)
-#define CSICR1_FCC		(1 << 8)
-#define CSICR1_BIG_ENDIAN	(1 << 7)
-#define CSICR1_CLR_RXFIFO	(1 << 5)
-#define CSICR1_GCLK_MODE	(1 << 4)
-#define CSICR1_DATA_POL		(1 << 2)
-#define CSICR1_REDGE		(1 << 1)
-#define CSICR1_EN		(1 << 0)
-
-#define CSISR_SFF_OR_INT	(1 << 25)
-#define CSISR_RFF_OR_INT	(1 << 24)
-#define CSISR_STATFF_INT	(1 << 21)
-#define CSISR_RXFF_INT		(1 << 18)
-#define CSISR_SOF_INT		(1 << 16)
-#define CSISR_DRDY		(1 << 0)
-
-#define DRIVER_VERSION "0.0.2"
-#define DRIVER_NAME "mx1-camera"
-
-#define CSI_IRQ_MASK	(CSISR_SFF_OR_INT | CSISR_RFF_OR_INT | \
-			CSISR_STATFF_INT | CSISR_RXFF_INT | CSISR_SOF_INT)
-
-#define CSI_BUS_FLAGS	(V4L2_MBUS_MASTER | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \
-			V4L2_MBUS_VSYNC_ACTIVE_HIGH | V4L2_MBUS_VSYNC_ACTIVE_LOW | \
-			V4L2_MBUS_PCLK_SAMPLE_RISING | V4L2_MBUS_PCLK_SAMPLE_FALLING | \
-			V4L2_MBUS_DATA_ACTIVE_HIGH | V4L2_MBUS_DATA_ACTIVE_LOW)
-
-#define MAX_VIDEO_MEM 16	/* Video memory limit in megabytes */
-
-/*
- * Structures
- */
-
-/* buffer for one video frame */
-struct mx1_buffer {
-	/* common v4l buffer stuff -- must be first */
-	struct videobuf_buffer		vb;
-	enum v4l2_mbus_pixelcode	code;
-	int				inwork;
-};
-
-/*
- * i.MX1/i.MXL is only supposed to handle one camera on its Camera Sensor
- * Interface. If anyone ever builds hardware to enable more than
- * one camera, they will have to modify this driver too
- */
-struct mx1_camera_dev {
-	struct soc_camera_host		soc_host;
-	struct mx1_camera_pdata		*pdata;
-	struct mx1_buffer		*active;
-	struct resource			*res;
-	struct clk			*clk;
-	struct list_head		capture;
-
-	void __iomem			*base;
-	int				dma_chan;
-	unsigned int			irq;
-	unsigned long			mclk;
-
-	spinlock_t			lock;
-};
-
-/*
- *  Videobuf operations
- */
-static int mx1_videobuf_setup(struct videobuf_queue *vq, unsigned int *count,
-			      unsigned int *size)
-{
-	struct soc_camera_device *icd = vq->priv_data;
-
-	*size = icd->sizeimage;
-
-	if (!*count)
-		*count = 32;
-
-	if (*size * *count > MAX_VIDEO_MEM * 1024 * 1024)
-		*count = (MAX_VIDEO_MEM * 1024 * 1024) / *size;
-
-	dev_dbg(icd->parent, "count=%d, size=%d\n", *count, *size);
-
-	return 0;
-}
-
-static void free_buffer(struct videobuf_queue *vq, struct mx1_buffer *buf)
-{
-	struct soc_camera_device *icd = vq->priv_data;
-	struct videobuf_buffer *vb = &buf->vb;
-
-	BUG_ON(in_interrupt());
-
-	dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
-		vb, vb->baddr, vb->bsize);
-
-	/*
-	 * This waits until this buffer is out of danger, i.e., until it is no
-	 * longer in STATE_QUEUED or STATE_ACTIVE
-	 */
-	videobuf_waiton(vq, vb, 0, 0);
-	videobuf_dma_contig_free(vq, vb);
-
-	vb->state = VIDEOBUF_NEEDS_INIT;
-}
-
-static int mx1_videobuf_prepare(struct videobuf_queue *vq,
-		struct videobuf_buffer *vb, enum v4l2_field field)
-{
-	struct soc_camera_device *icd = vq->priv_data;
-	struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
-	int ret;
-
-	dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
-		vb, vb->baddr, vb->bsize);
-
-	/* Added list head initialization on alloc */
-	WARN_ON(!list_empty(&vb->queue));
-
-	BUG_ON(NULL == icd->current_fmt);
-
-	/*
-	 * I think, in buf_prepare you only have to protect global data,
-	 * the actual buffer is yours
-	 */
-	buf->inwork = 1;
-
-	if (buf->code	!= icd->current_fmt->code ||
-	    vb->width	!= icd->user_width ||
-	    vb->height	!= icd->user_height ||
-	    vb->field	!= field) {
-		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 = icd->sizeimage;
-	if (0 != vb->baddr && vb->bsize < vb->size) {
-		ret = -EINVAL;
-		goto out;
-	}
-
-	if (vb->state == VIDEOBUF_NEEDS_INIT) {
-		ret = videobuf_iolock(vq, vb, NULL);
-		if (ret)
-			goto fail;
-
-		vb->state = VIDEOBUF_PREPARED;
-	}
-
-	buf->inwork = 0;
-
-	return 0;
-
-fail:
-	free_buffer(vq, buf);
-out:
-	buf->inwork = 0;
-	return ret;
-}
-
-static int mx1_camera_setup_dma(struct mx1_camera_dev *pcdev)
-{
-	struct videobuf_buffer *vbuf = &pcdev->active->vb;
-	struct device *dev = pcdev->soc_host.icd->parent;
-	int ret;
-
-	if (unlikely(!pcdev->active)) {
-		dev_err(dev, "DMA End IRQ with no active buffer\n");
-		return -EFAULT;
-	}
-
-	/* setup sg list for future DMA */
-	ret = imx_dma_setup_single(pcdev->dma_chan,
-		videobuf_to_dma_contig(vbuf),
-		vbuf->size, pcdev->res->start +
-		CSIRXR, DMA_MODE_READ);
-	if (unlikely(ret))
-		dev_err(dev, "Failed to setup DMA sg list\n");
-
-	return ret;
-}
-
-/* Called under spinlock_irqsave(&pcdev->lock, ...) */
-static void mx1_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->parent);
-	struct mx1_camera_dev *pcdev = ici->priv;
-	struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
-
-	dev_dbg(icd->parent, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
-		vb, vb->baddr, vb->bsize);
-
-	list_add_tail(&vb->queue, &pcdev->capture);
-
-	vb->state = VIDEOBUF_ACTIVE;
-
-	if (!pcdev->active) {
-		pcdev->active = buf;
-
-		/* setup sg list for future DMA */
-		if (!mx1_camera_setup_dma(pcdev)) {
-			unsigned int temp;
-			/* enable SOF irq */
-			temp = __raw_readl(pcdev->base + CSICR1) |
-							CSICR1_SOF_INTEN;
-			__raw_writel(temp, pcdev->base + CSICR1);
-		}
-	}
-}
-
-static void mx1_videobuf_release(struct videobuf_queue *vq,
-				 struct videobuf_buffer *vb)
-{
-	struct mx1_buffer *buf = container_of(vb, struct mx1_buffer, vb);
-#ifdef DEBUG
-	struct soc_camera_device *icd = vq->priv_data;
-	struct device *dev = icd->parent;
-
-	dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
-		vb, vb->baddr, vb->bsize);
-
-	switch (vb->state) {
-	case VIDEOBUF_ACTIVE:
-		dev_dbg(dev, "%s (active)\n", __func__);
-		break;
-	case VIDEOBUF_QUEUED:
-		dev_dbg(dev, "%s (queued)\n", __func__);
-		break;
-	case VIDEOBUF_PREPARED:
-		dev_dbg(dev, "%s (prepared)\n", __func__);
-		break;
-	default:
-		dev_dbg(dev, "%s (unknown)\n", __func__);
-		break;
-	}
-#endif
-
-	free_buffer(vq, buf);
-}
-
-static void mx1_camera_wakeup(struct mx1_camera_dev *pcdev,
-			      struct videobuf_buffer *vb,
-			      struct mx1_buffer *buf)
-{
-	/* _init is used to debug races, see comment in mx1_camera_reqbufs() */
-	list_del_init(&vb->queue);
-	vb->state = VIDEOBUF_DONE;
-	v4l2_get_timestamp(&vb->ts);
-	vb->field_count++;
-	wake_up(&vb->done);
-
-	if (list_empty(&pcdev->capture)) {
-		pcdev->active = NULL;
-		return;
-	}
-
-	pcdev->active = list_entry(pcdev->capture.next,
-				   struct mx1_buffer, vb.queue);
-
-	/* setup sg list for future DMA */
-	if (likely(!mx1_camera_setup_dma(pcdev))) {
-		unsigned int temp;
-
-		/* enable SOF irq */
-		temp = __raw_readl(pcdev->base + CSICR1) | CSICR1_SOF_INTEN;
-		__raw_writel(temp, pcdev->base + CSICR1);
-	}
-}
-
-static void mx1_camera_dma_irq(int channel, void *data)
-{
-	struct mx1_camera_dev *pcdev = data;
-	struct device *dev = pcdev->soc_host.icd->parent;
-	struct mx1_buffer *buf;
-	struct videobuf_buffer *vb;
-	unsigned long flags;
-
-	spin_lock_irqsave(&pcdev->lock, flags);
-
-	imx_dma_disable(channel);
-
-	if (unlikely(!pcdev->active)) {
-		dev_err(dev, "DMA End IRQ with no active buffer\n");
-		goto out;
-	}
-
-	vb = &pcdev->active->vb;
-	buf = container_of(vb, struct mx1_buffer, vb);
-	WARN_ON(buf->inwork || list_empty(&vb->queue));
-	dev_dbg(dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__,
-		vb, vb->baddr, vb->bsize);
-
-	mx1_camera_wakeup(pcdev, vb, buf);
-out:
-	spin_unlock_irqrestore(&pcdev->lock, flags);
-}
-
-static struct videobuf_queue_ops mx1_videobuf_ops = {
-	.buf_setup	= mx1_videobuf_setup,
-	.buf_prepare	= mx1_videobuf_prepare,
-	.buf_queue	= mx1_videobuf_queue,
-	.buf_release	= mx1_videobuf_release,
-};
-
-static void mx1_camera_init_videobuf(struct videobuf_queue *q,
-				     struct soc_camera_device *icd)
-{
-	struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
-	struct mx1_camera_dev *pcdev = ici->priv;
-
-	videobuf_queue_dma_contig_init(q, &mx1_videobuf_ops, icd->parent,
-				&pcdev->lock, V4L2_BUF_TYPE_VIDEO_CAPTURE,
-				V4L2_FIELD_NONE,
-				sizeof(struct mx1_buffer), icd, &ici->host_lock);
-}
-
-static int mclk_get_divisor(struct mx1_camera_dev *pcdev)
-{
-	unsigned int mclk = pcdev->mclk;
-	unsigned long div;
-	unsigned long lcdclk;
-
-	lcdclk = clk_get_rate(pcdev->clk);
-
-	/*
-	 * We verify platform_mclk_10khz != 0, so if anyone breaks it, here
-	 * they get a nice Oops
-	 */
-	div = (lcdclk + 2 * mclk - 1) / (2 * mclk) - 1;
-
-	dev_dbg(pcdev->soc_host.icd->parent,
-		"System clock %lukHz, target freq %dkHz, divisor %lu\n",
-		lcdclk / 1000, mclk / 1000, div);
-
-	return div;
-}
-
-static void mx1_camera_activate(struct mx1_camera_dev *pcdev)
-{
-	unsigned int csicr1 = CSICR1_EN;
-
-	dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Activate device\n");
-
-	clk_prepare_enable(pcdev->clk);
-
-	/* enable CSI before doing anything else */
-	__raw_writel(csicr1, pcdev->base + CSICR1);
-
-	csicr1 |= CSICR1_MCLKEN | CSICR1_FCC | CSICR1_GCLK_MODE;
-	csicr1 |= CSICR1_MCLKDIV(mclk_get_divisor(pcdev));
-	csicr1 |= CSICR1_RXFF_LEVEL(2); /* 16 words */
-
-	__raw_writel(csicr1, pcdev->base + CSICR1);
-}
-
-static void mx1_camera_deactivate(struct mx1_camera_dev *pcdev)
-{
-	dev_dbg(pcdev->soc_host.v4l2_dev.dev, "Deactivate device\n");
-
-	/* Disable all CSI interface */
-	__raw_writel(0x00, pcdev->base + CSICR1);
-
-	clk_disable_unprepare(pcdev->clk);
-}
-
-static int mx1_camera_add_device(struct soc_camera_device *icd)
-{
-	dev_info(icd->parent, "MX1 Camera driver attached to camera %d\n",
-		 icd->devnum);
-
-	return 0;
-}
-
-static void mx1_camera_remove_device(struct soc_camera_device *icd)
-{
-	dev_info(icd->parent, "MX1 Camera driver detached from camera %d\n",
-		 icd->devnum);
-}
-
-/*
- * The following two functions absolutely depend on the fact, that
- * there can be only one camera on i.MX1/i.MXL camera sensor interface
- */
-static int mx1_camera_clock_start(struct soc_camera_host *ici)
-{
-	struct mx1_camera_dev *pcdev = ici->priv;
-
-	mx1_camera_activate(pcdev);
-
-	return 0;
-}
-
-static void mx1_camera_clock_stop(struct soc_camera_host *ici)
-{
-	struct mx1_camera_dev *pcdev = ici->priv;
-	unsigned int csicr1;
-
-	/* disable interrupts */
-	csicr1 = __raw_readl(pcdev->base + CSICR1) & ~CSI_IRQ_MASK;
-	__raw_writel(csicr1, pcdev->base + CSICR1);
-
-	/* Stop DMA engine */
-	imx_dma_disable(pcdev->dma_chan);
-
-	mx1_camera_deactivate(pcdev);
-}
-
-static int mx1_camera_set_bus_param(struct soc_camera_device *icd)
-{
-	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
-	struct soc_camera_host *ici = to_soc_camera_host(icd->parent);
-	struct mx1_camera_dev *pcdev = ici->priv;
-	struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,};
-	unsigned long common_flags;
-	unsigned int csicr1;
-	int ret;
-
-	/* MX1 supports only 8bit buswidth */
-	ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg);
-	if (!ret) {
-		common_flags = soc_mbus_config_compatible(&cfg, CSI_BUS_FLAGS);
-		if (!common_flags) {
-			dev_warn(icd->parent,
-				 "Flags incompatible: camera 0x%x, host 0x%x\n",
-				 cfg.flags, CSI_BUS_FLAGS);
-			return -EINVAL;
-		}
-	} else if (ret != -ENOIOCTLCMD) {
-		return ret;
-	} else {
-		common_flags = CSI_BUS_FLAGS;
-	}
-
-	/* Make choises, based on platform choice */
-	if ((common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) &&
-		(common_flags & V4L2_MBUS_VSYNC_ACTIVE_LOW)) {
-			if (!pcdev->pdata ||
-			     pcdev->pdata->flags & MX1_CAMERA_VSYNC_HIGH)
-				common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_LOW;
-			else
-				common_flags &= ~V4L2_MBUS_VSYNC_ACTIVE_HIGH;
-	}
-
-	if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) &&
-		(common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) {
-			if (!pcdev->pdata ||
-			     pcdev->pdata->flags & MX1_CAMERA_PCLK_RISING)
-				common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING;
-			else
-				common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING;
-	}
-
-	if ((common_flags & V4L2_MBUS_DATA_ACTIVE_HIGH) &&
-		(common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)) {
-			if (!pcdev->pdata ||
-			     pcdev->pdata->flags & MX1_CAMERA_DATA_HIGH)
-				common_flags &= ~V4L2_MBUS_DATA_ACTIVE_LOW;
-			else
-				common_flags &= ~V4L2_MBUS_DATA_ACTIVE_HIGH;
-	}
-
-	cfg.flags = common_flags;
-	ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg);
-	if (ret < 0 && ret != -ENOIOCTLCMD) {
-		dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n",
-			common_flags, ret);
-		return ret;
-	}
-
-	csicr1 = __raw_readl(pcdev->base + CSICR1);
-
-	if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING)
-		csicr1 |= CSICR1_REDGE;
-	if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH)
-		csicr1 |= CSICR1_SOF_POL;
-	if (common_flags & V4L2_MBUS_DATA_ACTIVE_LOW)
-		csicr1 |= CSICR1_DATA_POL;
-
-	__raw_writel(csicr1, pcdev->base + CSICR1);
-
-	return 0;
-}
-
-static int mx1_camera_set_fmt(struct soc_camera_device *icd,
-			      struct v4l2_format *f)
-{
-	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
-	const struct soc_camera_format_xlate *xlate;
-	struct v4l2_pix_format *pix = &f->fmt.pix;
-	struct v4l2_mbus_framefmt mf;
-	int ret, buswidth;
-
-	xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
-	if (!xlate) {
-		dev_warn(icd->parent, "Format %x not found\n",
-			 pix->pixelformat);
-		return -EINVAL;
-	}
-
-	buswidth = xlate->host_fmt->bits_per_sample;
-	if (buswidth > 8) {
-		dev_warn(icd->parent,
-			 "bits-per-sample %d for format %x unsupported\n",
-			 buswidth, pix->pixelformat);
-		return -EINVAL;
-	}
-
-	mf.width	= pix->width;
-	mf.height	= pix->height;
-	mf.field	= pix->field;
-	mf.colorspace	= pix->colorspace;
-	mf.code		= xlate->code;
-
-	ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf);
-	if (ret < 0)
-		return ret;
-
-	if (mf.code != xlate->code)
-		return -EINVAL;
-
-	pix->width		= mf.width;
-	pix->height		= mf.height;
-	pix->field		= mf.field;
-	pix->colorspace		= mf.colorspace;
-	icd->current_fmt	= xlate;
-
-	return ret;
-}
-
-static int mx1_camera_try_fmt(struct soc_camera_device *icd,
-			      struct v4l2_format *f)
-{
-	struct v4l2_subdev *sd = soc_camera_to_subdev(icd);
-	const struct soc_camera_format_xlate *xlate;
-	struct v4l2_pix_format *pix = &f->fmt.pix;
-	struct v4l2_mbus_framefmt mf;
-	int ret;
-	/* TODO: limit to mx1 hardware capabilities */
-
-	xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat);
-	if (!xlate) {
-		dev_warn(icd->parent, "Format %x not found\n",
-			 pix->pixelformat);
-		return -EINVAL;
-	}
-
-	mf.width	= pix->width;
-	mf.height	= pix->height;
-	mf.field	= pix->field;
-	mf.colorspace	= pix->colorspace;
-	mf.code		= xlate->code;
-
-	/* limit to sensor capabilities */
-	ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf);
-	if (ret < 0)
-		return ret;
-
-	pix->width	= mf.width;
-	pix->height	= mf.height;
-	pix->field	= mf.field;
-	pix->colorspace	= mf.colorspace;
-
-	return 0;
-}
-
-static int mx1_camera_reqbufs(struct soc_camera_device *icd,
-			      struct v4l2_requestbuffers *p)
-{
-	int 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
-	 */
-	for (i = 0; i < p->count; i++) {
-		struct mx1_buffer *buf = container_of(icd->vb_vidq.bufs[i],
-						      struct mx1_buffer, vb);
-		buf->inwork = 0;
-		INIT_LIST_HEAD(&buf->vb.queue);
-	}
-
-	return 0;
-}
-
-static unsigned int mx1_camera_poll(struct file *file, poll_table *pt)
-{
-	struct soc_camera_device *icd = file->private_data;
-	struct mx1_buffer *buf;
-
-	buf = list_entry(icd->vb_vidq.stream.next, struct mx1_buffer,
-			 vb.stream);
-
-	poll_wait(file, &buf->vb.done, pt);
-
-	if (buf->vb.state == VIDEOBUF_DONE ||
-	    buf->vb.state == VIDEOBUF_ERROR)
-		return POLLIN | POLLRDNORM;
-
-	return 0;
-}
-
-static int mx1_camera_querycap(struct soc_camera_host *ici,
-			       struct v4l2_capability *cap)
-{
-	/* cap->name is set by the friendly caller:-> */
-	strlcpy(cap->card, "i.MX1/i.MXL Camera", sizeof(cap->card));
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING;
-
-	return 0;
-}
-
-static struct soc_camera_host_ops mx1_soc_camera_host_ops = {
-	.owner		= THIS_MODULE,
-	.add		= mx1_camera_add_device,
-	.remove		= mx1_camera_remove_device,
-	.clock_start	= mx1_camera_clock_start,
-	.clock_stop	= mx1_camera_clock_stop,
-	.set_bus_param	= mx1_camera_set_bus_param,
-	.set_fmt	= mx1_camera_set_fmt,
-	.try_fmt	= mx1_camera_try_fmt,
-	.init_videobuf	= mx1_camera_init_videobuf,
-	.reqbufs	= mx1_camera_reqbufs,
-	.poll		= mx1_camera_poll,
-	.querycap	= mx1_camera_querycap,
-};
-
-static struct fiq_handler fh = {
-	.name		= "csi_sof"
-};
-
-static int __init mx1_camera_probe(struct platform_device *pdev)
-{
-	struct mx1_camera_dev *pcdev;
-	struct resource *res;
-	struct pt_regs regs;
-	struct clk *clk;
-	void __iomem *base;
-	unsigned int irq;
-	int err = 0;
-
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	irq = platform_get_irq(pdev, 0);
-	if (!res || (int)irq <= 0) {
-		err = -ENODEV;
-		goto exit;
-	}
-
-	clk = clk_get(&pdev->dev, "csi_clk");
-	if (IS_ERR(clk)) {
-		err = PTR_ERR(clk);
-		goto exit;
-	}
-
-	pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL);
-	if (!pcdev) {
-		dev_err(&pdev->dev, "Could not allocate pcdev\n");
-		err = -ENOMEM;
-		goto exit_put_clk;
-	}
-
-	pcdev->res = res;
-	pcdev->clk = clk;
-
-	pcdev->pdata = pdev->dev.platform_data;
-
-	if (pcdev->pdata)
-		pcdev->mclk = pcdev->pdata->mclk_10khz * 10000;
-
-	if (!pcdev->mclk) {
-		dev_warn(&pdev->dev,
-			 "mclk_10khz == 0! Please, fix your platform data. "
-			 "Using default 20MHz\n");
-		pcdev->mclk = 20000000;
-	}
-
-	INIT_LIST_HEAD(&pcdev->capture);
-	spin_lock_init(&pcdev->lock);
-
-	/*
-	 * Request the regions.
-	 */
-	if (!request_mem_region(res->start, resource_size(res), DRIVER_NAME)) {
-		err = -EBUSY;
-		goto exit_kfree;
-	}
-
-	base = ioremap(res->start, resource_size(res));
-	if (!base) {
-		err = -ENOMEM;
-		goto exit_release;
-	}
-	pcdev->irq = irq;
-	pcdev->base = base;
-
-	/* request dma */
-	pcdev->dma_chan = imx_dma_request_by_prio(DRIVER_NAME, DMA_PRIO_HIGH);
-	if (pcdev->dma_chan < 0) {
-		dev_err(&pdev->dev, "Can't request DMA for MX1 CSI\n");
-		err = -EBUSY;
-		goto exit_iounmap;
-	}
-	dev_dbg(&pdev->dev, "got DMA channel %d\n", pcdev->dma_chan);
-
-	imx_dma_setup_handlers(pcdev->dma_chan, mx1_camera_dma_irq, NULL,
-			       pcdev);
-
-	imx_dma_config_channel(pcdev->dma_chan, IMX_DMA_TYPE_FIFO,
-			       IMX_DMA_MEMSIZE_32, MX1_DMA_REQ_CSI_R, 0);
-	/* burst length : 16 words = 64 bytes */
-	imx_dma_config_burstlen(pcdev->dma_chan, 0);
-
-	/* request irq */
-	err = claim_fiq(&fh);
-	if (err) {
-		dev_err(&pdev->dev, "Camera interrupt register failed\n");
-		goto exit_free_dma;
-	}
-
-	set_fiq_handler(&mx1_camera_sof_fiq_start, &mx1_camera_sof_fiq_end -
-						   &mx1_camera_sof_fiq_start);
-
-	regs.ARM_r8 = (long)MX1_DMA_DIMR;
-	regs.ARM_r9 = (long)MX1_DMA_CCR(pcdev->dma_chan);
-	regs.ARM_r10 = (long)pcdev->base + CSICR1;
-	regs.ARM_fp = (long)pcdev->base + CSISR;
-	regs.ARM_sp = 1 << pcdev->dma_chan;
-	set_fiq_regs(&regs);
-
-	mxc_set_irq_fiq(irq, 1);
-	enable_fiq(irq);
-
-	pcdev->soc_host.drv_name	= DRIVER_NAME;
-	pcdev->soc_host.ops		= &mx1_soc_camera_host_ops;
-	pcdev->soc_host.priv		= pcdev;
-	pcdev->soc_host.v4l2_dev.dev	= &pdev->dev;
-	pcdev->soc_host.nr		= pdev->id;
-	err = soc_camera_host_register(&pcdev->soc_host);
-	if (err)
-		goto exit_free_irq;
-
-	dev_info(&pdev->dev, "MX1 Camera driver loaded\n");
-
-	return 0;
-
-exit_free_irq:
-	disable_fiq(irq);
-	mxc_set_irq_fiq(irq, 0);
-	release_fiq(&fh);
-exit_free_dma:
-	imx_dma_free(pcdev->dma_chan);
-exit_iounmap:
-	iounmap(base);
-exit_release:
-	release_mem_region(res->start, resource_size(res));
-exit_kfree:
-	kfree(pcdev);
-exit_put_clk:
-	clk_put(clk);
-exit:
-	return err;
-}
-
-static int __exit mx1_camera_remove(struct platform_device *pdev)
-{
-	struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev);
-	struct mx1_camera_dev *pcdev = container_of(soc_host,
-					struct mx1_camera_dev, soc_host);
-	struct resource *res;
-
-	imx_dma_free(pcdev->dma_chan);
-	disable_fiq(pcdev->irq);
-	mxc_set_irq_fiq(pcdev->irq, 0);
-	release_fiq(&fh);
-
-	clk_put(pcdev->clk);
-
-	soc_camera_host_unregister(soc_host);
-
-	iounmap(pcdev->base);
-
-	res = pcdev->res;
-	release_mem_region(res->start, resource_size(res));
-
-	kfree(pcdev);
-
-	dev_info(&pdev->dev, "MX1 Camera driver unloaded\n");
-
-	return 0;
-}
-
-static struct platform_driver mx1_camera_driver = {
-	.driver		= {
-		.name	= DRIVER_NAME,
-	},
-	.remove		= __exit_p(mx1_camera_remove),
-};
-
-module_platform_driver_probe(mx1_camera_driver, mx1_camera_probe);
-
-MODULE_DESCRIPTION("i.MX1/i.MXL SoC Camera Host driver");
-MODULE_AUTHOR("Paulius Zaleckas <[e-mail]>");
-MODULE_LICENSE("GPL v2");
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_ALIAS("platform:" DRIVER_NAME);