[media] marvell-cam: Move cafe-ccic into its own directory

This driver will soon become a family of drivers, so let's give it its own
place to live.  This move requires putting ov7670.h into include/media, but
there are no code changes.

Cc: Daniel Drake <dsd@laptop.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 0 insertions, 2267 deletions

diff --git a/drivers/media/video/cafe_ccic.c b/drivers/media/video/cafe_ccic.c
deleted file mode 100644
index 6647033..0000000
--- a/drivers/media/video/cafe_ccic.c
+++ /dev/null
@@ -1,2267 +0,0 @@
-/*
- * A driver for the CMOS camera controller in the Marvell 88ALP01 "cafe"
- * multifunction chip.  Currently works with the Omnivision OV7670
- * sensor.
- *
- * The data sheet for this device can be found at:
- *    http://www.marvell.com/products/pc_connectivity/88alp01/ 
- *
- * Copyright 2006 One Laptop Per Child Association, Inc.
- * Copyright 2006-7 Jonathan Corbet <corbet@lwn.net>
- *
- * Written by Jonathan Corbet, corbet@lwn.net.
- *
- * v4l2_device/v4l2_subdev conversion by:
- * Copyright (C) 2009 Hans Verkuil <hverkuil@xs4all.nl>
- *
- * Note: this conversion is untested! Please contact the linux-media
- * mailinglist if you can test this, together with the test results.
- *
- * This file may be distributed under the terms of the GNU General
- * Public License, version 2.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/fs.h>
-#include <linux/dmi.h>
-#include <linux/mm.h>
-#include <linux/pci.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/spinlock.h>
-#include <linux/videodev2.h>
-#include <linux/slab.h>
-#include <media/v4l2-device.h>
-#include <media/v4l2-ioctl.h>
-#include <media/v4l2-chip-ident.h>
-#include <linux/device.h>
-#include <linux/wait.h>
-#include <linux/list.h>
-#include <linux/dma-mapping.h>
-#include <linux/delay.h>
-#include <linux/jiffies.h>
-#include <linux/vmalloc.h>
-
-#include <asm/uaccess.h>
-#include <asm/io.h>
-
-#include "ov7670.h"
-#include "cafe_ccic-regs.h"
-
-#define CAFE_VERSION 0x000002
-
-
-/*
- * Parameters.
- */
-MODULE_AUTHOR("Jonathan Corbet <corbet@lwn.net>");
-MODULE_DESCRIPTION("Marvell 88ALP01 CMOS Camera Controller driver");
-MODULE_LICENSE("GPL");
-MODULE_SUPPORTED_DEVICE("Video");
-
-/*
- * Internal DMA buffer management.  Since the controller cannot do S/G I/O,
- * we must have physically contiguous buffers to bring frames into.
- * These parameters control how many buffers we use, whether we
- * allocate them at load time (better chance of success, but nails down
- * memory) or when somebody tries to use the camera (riskier), and,
- * for load-time allocation, how big they should be.
- *
- * The controller can cycle through three buffers.  We could use
- * more by flipping pointers around, but it probably makes little
- * sense.
- */
-
-#define MAX_DMA_BUFS 3
-static int alloc_bufs_at_read;
-module_param(alloc_bufs_at_read, bool, 0444);
-MODULE_PARM_DESC(alloc_bufs_at_read,
-		"Non-zero value causes DMA buffers to be allocated when the "
-		"video capture device is read, rather than at module load "
-		"time.  This saves memory, but decreases the chances of "
-		"successfully getting those buffers.");
-
-static int n_dma_bufs = 3;
-module_param(n_dma_bufs, uint, 0644);
-MODULE_PARM_DESC(n_dma_bufs,
-		"The number of DMA buffers to allocate.  Can be either two "
-		"(saves memory, makes timing tighter) or three.");
-
-static int dma_buf_size = VGA_WIDTH * VGA_HEIGHT * 2;  /* Worst case */
-module_param(dma_buf_size, uint, 0444);
-MODULE_PARM_DESC(dma_buf_size,
-		"The size of the allocated DMA buffers.  If actual operating "
-		"parameters require larger buffers, an attempt to reallocate "
-		"will be made.");
-
-static int min_buffers = 1;
-module_param(min_buffers, uint, 0644);
-MODULE_PARM_DESC(min_buffers,
-		"The minimum number of streaming I/O buffers we are willing "
-		"to work with.");
-
-static int max_buffers = 10;
-module_param(max_buffers, uint, 0644);
-MODULE_PARM_DESC(max_buffers,
-		"The maximum number of streaming I/O buffers an application "
-		"will be allowed to allocate.  These buffers are big and live "
-		"in vmalloc space.");
-
-static int flip;
-module_param(flip, bool, 0444);
-MODULE_PARM_DESC(flip,
-		"If set, the sensor will be instructed to flip the image "
-		"vertically.");
-
-
-enum cafe_state {
-	S_NOTREADY,	/* Not yet initialized */
-	S_IDLE,		/* Just hanging around */
-	S_FLAKED,	/* Some sort of problem */
-	S_SINGLEREAD,	/* In read() */
-	S_SPECREAD,   	/* Speculative read (for future read()) */
-	S_STREAMING	/* Streaming data */
-};
-
-/*
- * Tracking of streaming I/O buffers.
- */
-struct cafe_sio_buffer {
-	struct list_head list;
-	struct v4l2_buffer v4lbuf;
-	char *buffer;   /* Where it lives in kernel space */
-	int mapcount;
-	struct cafe_camera *cam;
-};
-
-/*
- * A description of one of our devices.
- * Locking: controlled by s_mutex.  Certain fields, however, require
- * 	    the dev_lock spinlock; they are marked as such by comments.
- *	    dev_lock is also required for access to device registers.
- */
-struct cafe_camera
-{
-	struct v4l2_device v4l2_dev;
-	enum cafe_state state;
-	unsigned long flags;   		/* Buffer status, mainly (dev_lock) */
-	int users;			/* How many open FDs */
-	struct file *owner;		/* Who has data access (v4l2) */
-
-	/*
-	 * Subsystem structures.
-	 */
-	struct pci_dev *pdev;
-	struct video_device vdev;
-	struct i2c_adapter i2c_adapter;
-	struct v4l2_subdev *sensor;
-	unsigned short sensor_addr;
-
-	unsigned char __iomem *regs;
-	struct list_head dev_list;	/* link to other devices */
-
-	/* DMA buffers */
-	unsigned int nbufs;		/* How many are alloc'd */
-	int next_buf;			/* Next to consume (dev_lock) */
-	unsigned int dma_buf_size;  	/* allocated size */
-	void *dma_bufs[MAX_DMA_BUFS];	/* Internal buffer addresses */
-	dma_addr_t dma_handles[MAX_DMA_BUFS]; /* Buffer bus addresses */
-	unsigned int specframes;	/* Unconsumed spec frames (dev_lock) */
-	unsigned int sequence;		/* Frame sequence number */
-	unsigned int buf_seq[MAX_DMA_BUFS]; /* Sequence for individual buffers */
-
-	/* Streaming buffers */
-	unsigned int n_sbufs;		/* How many we have */
-	struct cafe_sio_buffer *sb_bufs; /* The array of housekeeping structs */
-	struct list_head sb_avail;	/* Available for data (we own) (dev_lock) */
-	struct list_head sb_full;	/* With data (user space owns) (dev_lock) */
-	struct tasklet_struct s_tasklet;
-
-	/* Current operating parameters */
-	u32 sensor_type;		/* Currently ov7670 only */
-	struct v4l2_pix_format pix_format;
-	enum v4l2_mbus_pixelcode mbus_code;
-
-	/* Locks */
-	struct mutex s_mutex; /* Access to this structure */
-	spinlock_t dev_lock;  /* Access to device */
-
-	/* Misc */
-	wait_queue_head_t smbus_wait;	/* Waiting on i2c events */
-	wait_queue_head_t iowait;	/* Waiting on frame data */
-};
-
-/*
- * Status flags.  Always manipulated with bit operations.
- */
-#define CF_BUF0_VALID	 0	/* Buffers valid - first three */
-#define CF_BUF1_VALID	 1
-#define CF_BUF2_VALID	 2
-#define CF_DMA_ACTIVE	 3	/* A frame is incoming */
-#define CF_CONFIG_NEEDED 4	/* Must configure hardware */
-
-#define sensor_call(cam, o, f, args...) \
-	v4l2_subdev_call(cam->sensor, o, f, ##args)
-
-static inline struct cafe_camera *to_cam(struct v4l2_device *dev)
-{
-	return container_of(dev, struct cafe_camera, v4l2_dev);
-}
-
-static struct cafe_format_struct {
-	__u8 *desc;
-	__u32 pixelformat;
-	int bpp;   /* Bytes per pixel */
-	enum v4l2_mbus_pixelcode mbus_code;
-} cafe_formats[] = {
-	{
-		.desc		= "YUYV 4:2:2",
-		.pixelformat	= V4L2_PIX_FMT_YUYV,
-		.mbus_code	= V4L2_MBUS_FMT_YUYV8_2X8,
-		.bpp		= 2,
-	},
-	{
-		.desc		= "RGB 444",
-		.pixelformat	= V4L2_PIX_FMT_RGB444,
-		.mbus_code	= V4L2_MBUS_FMT_RGB444_2X8_PADHI_LE,
-		.bpp		= 2,
-	},
-	{
-		.desc		= "RGB 565",
-		.pixelformat	= V4L2_PIX_FMT_RGB565,
-		.mbus_code	= V4L2_MBUS_FMT_RGB565_2X8_LE,
-		.bpp		= 2,
-	},
-	{
-		.desc		= "Raw RGB Bayer",
-		.pixelformat	= V4L2_PIX_FMT_SBGGR8,
-		.mbus_code	= V4L2_MBUS_FMT_SBGGR8_1X8,
-		.bpp		= 1
-	},
-};
-#define N_CAFE_FMTS ARRAY_SIZE(cafe_formats)
-
-static struct cafe_format_struct *cafe_find_format(u32 pixelformat)
-{
-	unsigned i;
-
-	for (i = 0; i < N_CAFE_FMTS; i++)
-		if (cafe_formats[i].pixelformat == pixelformat)
-			return cafe_formats + i;
-	/* Not found? Then return the first format. */
-	return cafe_formats;
-}
-
-/*
- * Start over with DMA buffers - dev_lock needed.
- */
-static void cafe_reset_buffers(struct cafe_camera *cam)
-{
-	int i;
-
-	cam->next_buf = -1;
-	for (i = 0; i < cam->nbufs; i++)
-		clear_bit(i, &cam->flags);
-	cam->specframes = 0;
-}
-
-static inline int cafe_needs_config(struct cafe_camera *cam)
-{
-	return test_bit(CF_CONFIG_NEEDED, &cam->flags);
-}
-
-static void cafe_set_config_needed(struct cafe_camera *cam, int needed)
-{
-	if (needed)
-		set_bit(CF_CONFIG_NEEDED, &cam->flags);
-	else
-		clear_bit(CF_CONFIG_NEEDED, &cam->flags);
-}
-
-
-
-
-/*
- * Debugging and related.
- */
-#define cam_err(cam, fmt, arg...) \
-	dev_err(&(cam)->pdev->dev, fmt, ##arg);
-#define cam_warn(cam, fmt, arg...) \
-	dev_warn(&(cam)->pdev->dev, fmt, ##arg);
-#define cam_dbg(cam, fmt, arg...) \
-	dev_dbg(&(cam)->pdev->dev, fmt, ##arg);
-
-
-/* ---------------------------------------------------------------------*/
-
-/*
- * Device register I/O
- */
-static inline void cafe_reg_write(struct cafe_camera *cam, unsigned int reg,
-		unsigned int val)
-{
-	iowrite32(val, cam->regs + reg);
-}
-
-static inline unsigned int cafe_reg_read(struct cafe_camera *cam,
-		unsigned int reg)
-{
-	return ioread32(cam->regs + reg);
-}
-
-
-static inline void cafe_reg_write_mask(struct cafe_camera *cam, unsigned int reg,
-		unsigned int val, unsigned int mask)
-{
-	unsigned int v = cafe_reg_read(cam, reg);
-
-	v = (v & ~mask) | (val & mask);
-	cafe_reg_write(cam, reg, v);
-}
-
-static inline void cafe_reg_clear_bit(struct cafe_camera *cam,
-		unsigned int reg, unsigned int val)
-{
-	cafe_reg_write_mask(cam, reg, 0, val);
-}
-
-static inline void cafe_reg_set_bit(struct cafe_camera *cam,
-		unsigned int reg, unsigned int val)
-{
-	cafe_reg_write_mask(cam, reg, val, val);
-}
-
-
-
-/* -------------------------------------------------------------------- */
-/*
- * The I2C/SMBUS interface to the camera itself starts here.  The
- * controller handles SMBUS itself, presenting a relatively simple register
- * interface; all we have to do is to tell it where to route the data.
- */
-#define CAFE_SMBUS_TIMEOUT (HZ)  /* generous */
-
-static int cafe_smbus_write_done(struct cafe_camera *cam)
-{
-	unsigned long flags;
-	int c1;
-
-	/*
-	 * We must delay after the interrupt, or the controller gets confused
-	 * and never does give us good status.  Fortunately, we don't do this
-	 * often.
-	 */
-	udelay(20);
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	c1 = cafe_reg_read(cam, REG_TWSIC1);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	return (c1 & (TWSIC1_WSTAT|TWSIC1_ERROR)) != TWSIC1_WSTAT;
-}
-
-static int cafe_smbus_write_data(struct cafe_camera *cam,
-		u16 addr, u8 command, u8 value)
-{
-	unsigned int rval;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	rval = TWSIC0_EN | ((addr << TWSIC0_SID_SHIFT) & TWSIC0_SID);
-	rval |= TWSIC0_OVMAGIC;  /* Make OV sensors work */
-	/*
-	 * Marvell sez set clkdiv to all 1's for now.
-	 */
-	rval |= TWSIC0_CLKDIV;
-	cafe_reg_write(cam, REG_TWSIC0, rval);
-	(void) cafe_reg_read(cam, REG_TWSIC1); /* force write */
-	rval = value | ((command << TWSIC1_ADDR_SHIFT) & TWSIC1_ADDR);
-	cafe_reg_write(cam, REG_TWSIC1, rval);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-
-	/* Unfortunately, reading TWSIC1 too soon after sending a command
-	 * causes the device to die.
-	 * Use a busy-wait because we often send a large quantity of small
-	 * commands at-once; using msleep() would cause a lot of context
-	 * switches which take longer than 2ms, resulting in a noticeable
-	 * boot-time and capture-start delays.
-	 */
-	mdelay(2);
-
-	/*
-	 * Another sad fact is that sometimes, commands silently complete but
-	 * cafe_smbus_write_done() never becomes aware of this.
-	 * This happens at random and appears to possible occur with any
-	 * command.
-	 * We don't understand why this is. We work around this issue
-	 * with the timeout in the wait below, assuming that all commands
-	 * complete within the timeout.
-	 */
-	wait_event_timeout(cam->smbus_wait, cafe_smbus_write_done(cam),
-			CAFE_SMBUS_TIMEOUT);
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	rval = cafe_reg_read(cam, REG_TWSIC1);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-
-	if (rval & TWSIC1_WSTAT) {
-		cam_err(cam, "SMBUS write (%02x/%02x/%02x) timed out\n", addr,
-				command, value);
-		return -EIO;
-	}
-	if (rval & TWSIC1_ERROR) {
-		cam_err(cam, "SMBUS write (%02x/%02x/%02x) error\n", addr,
-				command, value);
-		return -EIO;
-	}
-	return 0;
-}
-
-
-
-static int cafe_smbus_read_done(struct cafe_camera *cam)
-{
-	unsigned long flags;
-	int c1;
-
-	/*
-	 * We must delay after the interrupt, or the controller gets confused
-	 * and never does give us good status.  Fortunately, we don't do this
-	 * often.
-	 */
-	udelay(20);
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	c1 = cafe_reg_read(cam, REG_TWSIC1);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	return c1 & (TWSIC1_RVALID|TWSIC1_ERROR);
-}
-
-
-
-static int cafe_smbus_read_data(struct cafe_camera *cam,
-		u16 addr, u8 command, u8 *value)
-{
-	unsigned int rval;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	rval = TWSIC0_EN | ((addr << TWSIC0_SID_SHIFT) & TWSIC0_SID);
-	rval |= TWSIC0_OVMAGIC; /* Make OV sensors work */
-	/*
-	 * Marvel sez set clkdiv to all 1's for now.
-	 */
-	rval |= TWSIC0_CLKDIV;
-	cafe_reg_write(cam, REG_TWSIC0, rval);
-	(void) cafe_reg_read(cam, REG_TWSIC1); /* force write */
-	rval = TWSIC1_READ | ((command << TWSIC1_ADDR_SHIFT) & TWSIC1_ADDR);
-	cafe_reg_write(cam, REG_TWSIC1, rval);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-
-	wait_event_timeout(cam->smbus_wait,
-			cafe_smbus_read_done(cam), CAFE_SMBUS_TIMEOUT);
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	rval = cafe_reg_read(cam, REG_TWSIC1);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-
-	if (rval & TWSIC1_ERROR) {
-		cam_err(cam, "SMBUS read (%02x/%02x) error\n", addr, command);
-		return -EIO;
-	}
-	if (! (rval & TWSIC1_RVALID)) {
-		cam_err(cam, "SMBUS read (%02x/%02x) timed out\n", addr,
-				command);
-		return -EIO;
-	}
-	*value = rval & 0xff;
-	return 0;
-}
-
-/*
- * Perform a transfer over SMBUS.  This thing is called under
- * the i2c bus lock, so we shouldn't race with ourselves...
- */
-static int cafe_smbus_xfer(struct i2c_adapter *adapter, u16 addr,
-		unsigned short flags, char rw, u8 command,
-		int size, union i2c_smbus_data *data)
-{
-	struct v4l2_device *v4l2_dev = i2c_get_adapdata(adapter);
-	struct cafe_camera *cam = to_cam(v4l2_dev);
-	int ret = -EINVAL;
-
-	/*
-	 * This interface would appear to only do byte data ops.  OK
-	 * it can do word too, but the cam chip has no use for that.
-	 */
-	if (size != I2C_SMBUS_BYTE_DATA) {
-		cam_err(cam, "funky xfer size %d\n", size);
-		return -EINVAL;
-	}
-
-	if (rw == I2C_SMBUS_WRITE)
-		ret = cafe_smbus_write_data(cam, addr, command, data->byte);
-	else if (rw == I2C_SMBUS_READ)
-		ret = cafe_smbus_read_data(cam, addr, command, &data->byte);
-	return ret;
-}
-
-
-static void cafe_smbus_enable_irq(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_reg_set_bit(cam, REG_IRQMASK, TWSIIRQS);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-}
-
-static u32 cafe_smbus_func(struct i2c_adapter *adapter)
-{
-	return I2C_FUNC_SMBUS_READ_BYTE_DATA  |
-	       I2C_FUNC_SMBUS_WRITE_BYTE_DATA;
-}
-
-static struct i2c_algorithm cafe_smbus_algo = {
-	.smbus_xfer = cafe_smbus_xfer,
-	.functionality = cafe_smbus_func
-};
-
-/* Somebody is on the bus */
-static void cafe_ctlr_stop_dma(struct cafe_camera *cam);
-static void cafe_ctlr_power_down(struct cafe_camera *cam);
-
-static int cafe_smbus_setup(struct cafe_camera *cam)
-{
-	struct i2c_adapter *adap = &cam->i2c_adapter;
-	int ret;
-
-	cafe_smbus_enable_irq(cam);
-	adap->owner = THIS_MODULE;
-	adap->algo = &cafe_smbus_algo;
-	strcpy(adap->name, "cafe_ccic");
-	adap->dev.parent = &cam->pdev->dev;
-	i2c_set_adapdata(adap, &cam->v4l2_dev);
-	ret = i2c_add_adapter(adap);
-	if (ret)
-		printk(KERN_ERR "Unable to register cafe i2c adapter\n");
-	return ret;
-}
-
-static void cafe_smbus_shutdown(struct cafe_camera *cam)
-{
-	i2c_del_adapter(&cam->i2c_adapter);
-}
-
-
-/* ------------------------------------------------------------------- */
-/*
- * Deal with the controller.
- */
-
-/*
- * Do everything we think we need to have the interface operating
- * according to the desired format.
- */
-static void cafe_ctlr_dma(struct cafe_camera *cam)
-{
-	/*
-	 * Store the first two Y buffers (we aren't supporting
-	 * planar formats for now, so no UV bufs).  Then either
-	 * set the third if it exists, or tell the controller
-	 * to just use two.
-	 */
-	cafe_reg_write(cam, REG_Y0BAR, cam->dma_handles[0]);
-	cafe_reg_write(cam, REG_Y1BAR, cam->dma_handles[1]);
-	if (cam->nbufs > 2) {
-		cafe_reg_write(cam, REG_Y2BAR, cam->dma_handles[2]);
-		cafe_reg_clear_bit(cam, REG_CTRL1, C1_TWOBUFS);
-	}
-	else
-		cafe_reg_set_bit(cam, REG_CTRL1, C1_TWOBUFS);
-	cafe_reg_write(cam, REG_UBAR, 0); /* 32 bits only for now */
-}
-
-static void cafe_ctlr_image(struct cafe_camera *cam)
-{
-	int imgsz;
-	struct v4l2_pix_format *fmt = &cam->pix_format;
-
-	imgsz = ((fmt->height << IMGSZ_V_SHIFT) & IMGSZ_V_MASK) |
-		(fmt->bytesperline & IMGSZ_H_MASK);
-	cafe_reg_write(cam, REG_IMGSIZE, imgsz);
-	cafe_reg_write(cam, REG_IMGOFFSET, 0);
-	/* YPITCH just drops the last two bits */
-	cafe_reg_write_mask(cam, REG_IMGPITCH, fmt->bytesperline,
-			IMGP_YP_MASK);
-	/*
-	 * Tell the controller about the image format we are using.
-	 */
-	switch (cam->pix_format.pixelformat) {
-	case V4L2_PIX_FMT_YUYV:
-	    cafe_reg_write_mask(cam, REG_CTRL0,
-			    C0_DF_YUV|C0_YUV_PACKED|C0_YUVE_YUYV,
-			    C0_DF_MASK);
-	    break;
-
-	case V4L2_PIX_FMT_RGB444:
-	    cafe_reg_write_mask(cam, REG_CTRL0,
-			    C0_DF_RGB|C0_RGBF_444|C0_RGB4_XRGB,
-			    C0_DF_MASK);
-		/* Alpha value? */
-	    break;
-
-	case V4L2_PIX_FMT_RGB565:
-	    cafe_reg_write_mask(cam, REG_CTRL0,
-			    C0_DF_RGB|C0_RGBF_565|C0_RGB5_BGGR,
-			    C0_DF_MASK);
-	    break;
-
-	default:
-	    cam_err(cam, "Unknown format %x\n", cam->pix_format.pixelformat);
-	    break;
-	}
-	/*
-	 * Make sure it knows we want to use hsync/vsync.
-	 */
-	cafe_reg_write_mask(cam, REG_CTRL0, C0_SIF_HVSYNC,
-			C0_SIFM_MASK);
-}
-
-
-/*
- * Configure the controller for operation; caller holds the
- * device mutex.
- */
-static int cafe_ctlr_configure(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_ctlr_dma(cam);
-	cafe_ctlr_image(cam);
-	cafe_set_config_needed(cam, 0);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	return 0;
-}
-
-static void cafe_ctlr_irq_enable(struct cafe_camera *cam)
-{
-	/*
-	 * Clear any pending interrupts, since we do not
-	 * expect to have I/O active prior to enabling.
-	 */
-	cafe_reg_write(cam, REG_IRQSTAT, FRAMEIRQS);
-	cafe_reg_set_bit(cam, REG_IRQMASK, FRAMEIRQS);
-}
-
-static void cafe_ctlr_irq_disable(struct cafe_camera *cam)
-{
-	cafe_reg_clear_bit(cam, REG_IRQMASK, FRAMEIRQS);
-}
-
-/*
- * Make the controller start grabbing images.  Everything must
- * be set up before doing this.
- */
-static void cafe_ctlr_start(struct cafe_camera *cam)
-{
-	/* set_bit performs a read, so no other barrier should be
-	   needed here */
-	cafe_reg_set_bit(cam, REG_CTRL0, C0_ENABLE);
-}
-
-static void cafe_ctlr_stop(struct cafe_camera *cam)
-{
-	cafe_reg_clear_bit(cam, REG_CTRL0, C0_ENABLE);
-}
-
-static void cafe_ctlr_init(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	/*
-	 * Added magic to bring up the hardware on the B-Test board
-	 */
-	cafe_reg_write(cam, 0x3038, 0x8);
-	cafe_reg_write(cam, 0x315c, 0x80008);
-	/*
-	 * Go through the dance needed to wake the device up.
-	 * Note that these registers are global and shared
-	 * with the NAND and SD devices.  Interaction between the
-	 * three still needs to be examined.
-	 */
-	cafe_reg_write(cam, REG_GL_CSR, GCSR_SRS|GCSR_MRS); /* Needed? */
-	cafe_reg_write(cam, REG_GL_CSR, GCSR_SRC|GCSR_MRC);
-	cafe_reg_write(cam, REG_GL_CSR, GCSR_SRC|GCSR_MRS);
-	/*
-	 * Here we must wait a bit for the controller to come around.
-	 */
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	msleep(5);
-	spin_lock_irqsave(&cam->dev_lock, flags);
-
-	cafe_reg_write(cam, REG_GL_CSR, GCSR_CCIC_EN|GCSR_SRC|GCSR_MRC);
-	cafe_reg_set_bit(cam, REG_GL_IMASK, GIMSK_CCIC_EN);
-	/*
-	 * Make sure it's not powered down.
-	 */
-	cafe_reg_clear_bit(cam, REG_CTRL1, C1_PWRDWN);
-	/*
-	 * Turn off the enable bit.  It sure should be off anyway,
-	 * but it's good to be sure.
-	 */
-	cafe_reg_clear_bit(cam, REG_CTRL0, C0_ENABLE);
-	/*
-	 * Mask all interrupts.
-	 */
-	cafe_reg_write(cam, REG_IRQMASK, 0);
-	/*
-	 * Clock the sensor appropriately.  Controller clock should
-	 * be 48MHz, sensor "typical" value is half that.
-	 */
-	cafe_reg_write_mask(cam, REG_CLKCTRL, 2, CLK_DIV_MASK);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-}
-
-
-/*
- * Stop the controller, and don't return until we're really sure that no
- * further DMA is going on.
- */
-static void cafe_ctlr_stop_dma(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	/*
-	 * Theory: stop the camera controller (whether it is operating
-	 * or not).  Delay briefly just in case we race with the SOF
-	 * interrupt, then wait until no DMA is active.
-	 */
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_ctlr_stop(cam);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	mdelay(1);
-	wait_event_timeout(cam->iowait,
-			!test_bit(CF_DMA_ACTIVE, &cam->flags), HZ);
-	if (test_bit(CF_DMA_ACTIVE, &cam->flags))
-		cam_err(cam, "Timeout waiting for DMA to end\n");
-		/* This would be bad news - what now? */
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cam->state = S_IDLE;
-	cafe_ctlr_irq_disable(cam);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-}
-
-/*
- * Power up and down.
- */
-static void cafe_ctlr_power_up(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_reg_clear_bit(cam, REG_CTRL1, C1_PWRDWN);
-	/*
-	 * Part one of the sensor dance: turn the global
-	 * GPIO signal on.
-	 */
-	cafe_reg_write(cam, REG_GL_FCR, GFCR_GPIO_ON);
-	cafe_reg_write(cam, REG_GL_GPIOR, GGPIO_OUT|GGPIO_VAL);
-	/*
-	 * Put the sensor into operational mode (assumes OLPC-style
-	 * wiring).  Control 0 is reset - set to 1 to operate.
-	 * Control 1 is power down, set to 0 to operate.
-	 */
-	cafe_reg_write(cam, REG_GPR, GPR_C1EN|GPR_C0EN); /* pwr up, reset */
-/*	mdelay(1); */ /* Marvell says 1ms will do it */
-	cafe_reg_write(cam, REG_GPR, GPR_C1EN|GPR_C0EN|GPR_C0);
-/*	mdelay(1); */ /* Enough? */
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	msleep(5); /* Just to be sure */
-}
-
-static void cafe_ctlr_power_down(struct cafe_camera *cam)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_reg_write(cam, REG_GPR, GPR_C1EN|GPR_C0EN|GPR_C1);
-	cafe_reg_write(cam, REG_GL_FCR, GFCR_GPIO_ON);
-	cafe_reg_write(cam, REG_GL_GPIOR, GGPIO_OUT);
-	cafe_reg_set_bit(cam, REG_CTRL1, C1_PWRDWN);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-}
-
-/* -------------------------------------------------------------------- */
-/*
- * Communications with the sensor.
- */
-
-static int __cafe_cam_reset(struct cafe_camera *cam)
-{
-	return sensor_call(cam, core, reset, 0);
-}
-
-/*
- * We have found the sensor on the i2c.  Let's try to have a
- * conversation.
- */
-static int cafe_cam_init(struct cafe_camera *cam)
-{
-	struct v4l2_dbg_chip_ident chip;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	if (cam->state != S_NOTREADY)
-		cam_warn(cam, "Cam init with device in funky state %d",
-				cam->state);
-	ret = __cafe_cam_reset(cam);
-	if (ret)
-		goto out;
-	chip.ident = V4L2_IDENT_NONE;
-	chip.match.type = V4L2_CHIP_MATCH_I2C_ADDR;
-	chip.match.addr = cam->sensor_addr;
-	ret = sensor_call(cam, core, g_chip_ident, &chip);
-	if (ret)
-		goto out;
-	cam->sensor_type = chip.ident;
-	if (cam->sensor_type != V4L2_IDENT_OV7670) {
-		cam_err(cam, "Unsupported sensor type 0x%x", cam->sensor_type);
-		ret = -EINVAL;
-		goto out;
-	}
-/* Get/set parameters? */
-	ret = 0;
-	cam->state = S_IDLE;
-  out:
-	cafe_ctlr_power_down(cam);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-/*
- * Configure the sensor to match the parameters we have.  Caller should
- * hold s_mutex
- */
-static int cafe_cam_set_flip(struct cafe_camera *cam)
-{
-	struct v4l2_control ctrl;
-
-	memset(&ctrl, 0, sizeof(ctrl));
-	ctrl.id = V4L2_CID_VFLIP;
-	ctrl.value = flip;
-	return sensor_call(cam, core, s_ctrl, &ctrl);
-}
-
-
-static int cafe_cam_configure(struct cafe_camera *cam)
-{
-	struct v4l2_mbus_framefmt mbus_fmt;
-	int ret;
-
-	v4l2_fill_mbus_format(&mbus_fmt, &cam->pix_format, cam->mbus_code);
-	ret = sensor_call(cam, core, init, 0);
-	if (ret == 0)
-		ret = sensor_call(cam, video, s_mbus_fmt, &mbus_fmt);
-	/*
-	 * OV7670 does weird things if flip is set *before* format...
-	 */
-	ret += cafe_cam_set_flip(cam);
-	return ret;
-}
-
-/* -------------------------------------------------------------------- */
-/*
- * DMA buffer management.  These functions need s_mutex held.
- */
-
-/* FIXME: this is inefficient as hell, since dma_alloc_coherent just
- * does a get_free_pages() call, and we waste a good chunk of an orderN
- * allocation.  Should try to allocate the whole set in one chunk.
- */
-static int cafe_alloc_dma_bufs(struct cafe_camera *cam, int loadtime)
-{
-	int i;
-
-	cafe_set_config_needed(cam, 1);
-	if (loadtime)
-		cam->dma_buf_size = dma_buf_size;
-	else
-		cam->dma_buf_size = cam->pix_format.sizeimage;
-	if (n_dma_bufs > 3)
-		n_dma_bufs = 3;
-
-	cam->nbufs = 0;
-	for (i = 0; i < n_dma_bufs; i++) {
-		cam->dma_bufs[i] = dma_alloc_coherent(&cam->pdev->dev,
-				cam->dma_buf_size, cam->dma_handles + i,
-				GFP_KERNEL);
-		if (cam->dma_bufs[i] == NULL) {
-			cam_warn(cam, "Failed to allocate DMA buffer\n");
-			break;
-		}
-		/* For debug, remove eventually */
-		memset(cam->dma_bufs[i], 0xcc, cam->dma_buf_size);
-		(cam->nbufs)++;
-	}
-
-	switch (cam->nbufs) {
-	case 1:
-	    dma_free_coherent(&cam->pdev->dev, cam->dma_buf_size,
-			    cam->dma_bufs[0], cam->dma_handles[0]);
-	    cam->nbufs = 0;
-	case 0:
-	    cam_err(cam, "Insufficient DMA buffers, cannot operate\n");
-	    return -ENOMEM;
-
-	case 2:
-	    if (n_dma_bufs > 2)
-		    cam_warn(cam, "Will limp along with only 2 buffers\n");
-	    break;
-	}
-	return 0;
-}
-
-static void cafe_free_dma_bufs(struct cafe_camera *cam)
-{
-	int i;
-
-	for (i = 0; i < cam->nbufs; i++) {
-		dma_free_coherent(&cam->pdev->dev, cam->dma_buf_size,
-				cam->dma_bufs[i], cam->dma_handles[i]);
-		cam->dma_bufs[i] = NULL;
-	}
-	cam->nbufs = 0;
-}
-
-
-
-
-
-/* ----------------------------------------------------------------------- */
-/*
- * Here starts the V4L2 interface code.
- */
-
-/*
- * Read an image from the device.
- */
-static ssize_t cafe_deliver_buffer(struct cafe_camera *cam,
-		char __user *buffer, size_t len, loff_t *pos)
-{
-	int bufno;
-	unsigned long flags;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	if (cam->next_buf < 0) {
-		cam_err(cam, "deliver_buffer: No next buffer\n");
-		spin_unlock_irqrestore(&cam->dev_lock, flags);
-		return -EIO;
-	}
-	bufno = cam->next_buf;
-	clear_bit(bufno, &cam->flags);
-	if (++(cam->next_buf) >= cam->nbufs)
-		cam->next_buf = 0;
-	if (! test_bit(cam->next_buf, &cam->flags))
-		cam->next_buf = -1;
-	cam->specframes = 0;
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-
-	if (len > cam->pix_format.sizeimage)
-		len = cam->pix_format.sizeimage;
-	if (copy_to_user(buffer, cam->dma_bufs[bufno], len))
-		return -EFAULT;
-	(*pos) += len;
-	return len;
-}
-
-/*
- * Get everything ready, and start grabbing frames.
- */
-static int cafe_read_setup(struct cafe_camera *cam, enum cafe_state state)
-{
-	int ret;
-	unsigned long flags;
-
-	/*
-	 * Configuration.  If we still don't have DMA buffers,
-	 * make one last, desperate attempt.
-	 */
-	if (cam->nbufs == 0)
-		if (cafe_alloc_dma_bufs(cam, 0))
-			return -ENOMEM;
-
-	if (cafe_needs_config(cam)) {
-		cafe_cam_configure(cam);
-		ret = cafe_ctlr_configure(cam);
-		if (ret)
-			return ret;
-	}
-
-	/*
-	 * Turn it loose.
-	 */
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	cafe_reset_buffers(cam);
-	cafe_ctlr_irq_enable(cam);
-	cam->state = state;
-	cafe_ctlr_start(cam);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	return 0;
-}
-
-
-static ssize_t cafe_v4l_read(struct file *filp,
-		char __user *buffer, size_t len, loff_t *pos)
-{
-	struct cafe_camera *cam = filp->private_data;
-	int ret = 0;
-
-	/*
-	 * Perhaps we're in speculative read mode and already
-	 * have data?
-	 */
-	mutex_lock(&cam->s_mutex);
-	if (cam->state == S_SPECREAD) {
-		if (cam->next_buf >= 0) {
-			ret = cafe_deliver_buffer(cam, buffer, len, pos);
-			if (ret != 0)
-				goto out_unlock;
-		}
-	} else if (cam->state == S_FLAKED || cam->state == S_NOTREADY) {
-		ret = -EIO;
-		goto out_unlock;
-	} else if (cam->state != S_IDLE) {
-		ret = -EBUSY;
-		goto out_unlock;
-	}
-
-	/*
-	 * v4l2: multiple processes can open the device, but only
-	 * one gets to grab data from it.
-	 */
-	if (cam->owner && cam->owner != filp) {
-		ret = -EBUSY;
-		goto out_unlock;
-	}
-	cam->owner = filp;
-
-	/*
-	 * Do setup if need be.
-	 */
-	if (cam->state != S_SPECREAD) {
-		ret = cafe_read_setup(cam, S_SINGLEREAD);
-		if (ret)
-			goto out_unlock;
-	}
-	/*
-	 * Wait for something to happen.  This should probably
-	 * be interruptible (FIXME).
-	 */
-	wait_event_timeout(cam->iowait, cam->next_buf >= 0, HZ);
-	if (cam->next_buf < 0) {
-		cam_err(cam, "read() operation timed out\n");
-		cafe_ctlr_stop_dma(cam);
-		ret = -EIO;
-		goto out_unlock;
-	}
-	/*
-	 * Give them their data and we should be done.
-	 */
-	ret = cafe_deliver_buffer(cam, buffer, len, pos);
-
-  out_unlock:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-
-
-
-
-
-
-/*
- * Streaming I/O support.
- */
-
-
-
-static int cafe_vidioc_streamon(struct file *filp, void *priv,
-		enum v4l2_buf_type type)
-{
-	struct cafe_camera *cam = filp->private_data;
-	int ret = -EINVAL;
-
-	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		goto out;
-	mutex_lock(&cam->s_mutex);
-	if (cam->state != S_IDLE || cam->n_sbufs == 0)
-		goto out_unlock;
-
-	cam->sequence = 0;
-	ret = cafe_read_setup(cam, S_STREAMING);
-
-  out_unlock:
-	mutex_unlock(&cam->s_mutex);
-  out:
-	return ret;
-}
-
-
-static int cafe_vidioc_streamoff(struct file *filp, void *priv,
-		enum v4l2_buf_type type)
-{
-	struct cafe_camera *cam = filp->private_data;
-	int ret = -EINVAL;
-
-	if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
-		goto out;
-	mutex_lock(&cam->s_mutex);
-	if (cam->state != S_STREAMING)
-		goto out_unlock;
-
-	cafe_ctlr_stop_dma(cam);
-	ret = 0;
-
-  out_unlock:
-	mutex_unlock(&cam->s_mutex);
-  out:
-	return ret;
-}
-
-
-
-static int cafe_setup_siobuf(struct cafe_camera *cam, int index)
-{
-	struct cafe_sio_buffer *buf = cam->sb_bufs + index;
-
-	INIT_LIST_HEAD(&buf->list);
-	buf->v4lbuf.length = PAGE_ALIGN(cam->pix_format.sizeimage);
-	buf->buffer = vmalloc_user(buf->v4lbuf.length);
-	if (buf->buffer == NULL)
-		return -ENOMEM;
-	buf->mapcount = 0;
-	buf->cam = cam;
-
-	buf->v4lbuf.index = index;
-	buf->v4lbuf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	buf->v4lbuf.field = V4L2_FIELD_NONE;
-	buf->v4lbuf.memory = V4L2_MEMORY_MMAP;
-	/*
-	 * Offset: must be 32-bit even on a 64-bit system.  videobuf-dma-sg
-	 * just uses the length times the index, but the spec warns
-	 * against doing just that - vma merging problems.  So we
-	 * leave a gap between each pair of buffers.
-	 */
-	buf->v4lbuf.m.offset = 2*index*buf->v4lbuf.length;
-	return 0;
-}
-
-static int cafe_free_sio_buffers(struct cafe_camera *cam)
-{
-	int i;
-
-	/*
-	 * If any buffers are mapped, we cannot free them at all.
-	 */
-	for (i = 0; i < cam->n_sbufs; i++)
-		if (cam->sb_bufs[i].mapcount > 0)
-			return -EBUSY;
-	/*
-	 * OK, let's do it.
-	 */
-	for (i = 0; i < cam->n_sbufs; i++)
-		vfree(cam->sb_bufs[i].buffer);
-	cam->n_sbufs = 0;
-	kfree(cam->sb_bufs);
-	cam->sb_bufs = NULL;
-	INIT_LIST_HEAD(&cam->sb_avail);
-	INIT_LIST_HEAD(&cam->sb_full);
-	return 0;
-}
-
-
-
-static int cafe_vidioc_reqbufs(struct file *filp, void *priv,
-		struct v4l2_requestbuffers *req)
-{
-	struct cafe_camera *cam = filp->private_data;
-	int ret = 0;  /* Silence warning */
-
-	/*
-	 * Make sure it's something we can do.  User pointers could be
-	 * implemented without great pain, but that's not been done yet.
-	 */
-	if (req->memory != V4L2_MEMORY_MMAP)
-		return -EINVAL;
-	/*
-	 * If they ask for zero buffers, they really want us to stop streaming
-	 * (if it's happening) and free everything.  Should we check owner?
-	 */
-	mutex_lock(&cam->s_mutex);
-	if (req->count == 0) {
-		if (cam->state == S_STREAMING)
-			cafe_ctlr_stop_dma(cam);
-		ret = cafe_free_sio_buffers (cam);
-		goto out;
-	}
-	/*
-	 * Device needs to be idle and working.  We *could* try to do the
-	 * right thing in S_SPECREAD by shutting things down, but it
-	 * probably doesn't matter.
-	 */
-	if (cam->state != S_IDLE || (cam->owner && cam->owner != filp)) {
-		ret = -EBUSY;
-		goto out;
-	}
-	cam->owner = filp;
-
-	if (req->count < min_buffers)
-		req->count = min_buffers;
-	else if (req->count > max_buffers)
-		req->count = max_buffers;
-	if (cam->n_sbufs > 0) {
-		ret = cafe_free_sio_buffers(cam);
-		if (ret)
-			goto out;
-	}
-
-	cam->sb_bufs = kzalloc(req->count*sizeof(struct cafe_sio_buffer),
-			GFP_KERNEL);
-	if (cam->sb_bufs == NULL) {
-		ret = -ENOMEM;
-		goto out;
-	}
-	for (cam->n_sbufs = 0; cam->n_sbufs < req->count; (cam->n_sbufs++)) {
-		ret = cafe_setup_siobuf(cam, cam->n_sbufs);
-		if (ret)
-			break;
-	}
-
-	if (cam->n_sbufs == 0)  /* no luck at all - ret already set */
-		kfree(cam->sb_bufs);
-	req->count = cam->n_sbufs;  /* In case of partial success */
-
-  out:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-static int cafe_vidioc_querybuf(struct file *filp, void *priv,
-		struct v4l2_buffer *buf)
-{
-	struct cafe_camera *cam = filp->private_data;
-	int ret = -EINVAL;
-
-	mutex_lock(&cam->s_mutex);
-	if (buf->index >= cam->n_sbufs)
-		goto out;
-	*buf = cam->sb_bufs[buf->index].v4lbuf;
-	ret = 0;
-  out:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-static int cafe_vidioc_qbuf(struct file *filp, void *priv,
-		struct v4l2_buffer *buf)
-{
-	struct cafe_camera *cam = filp->private_data;
-	struct cafe_sio_buffer *sbuf;
-	int ret = -EINVAL;
-	unsigned long flags;
-
-	mutex_lock(&cam->s_mutex);
-	if (buf->index >= cam->n_sbufs)
-		goto out;
-	sbuf = cam->sb_bufs + buf->index;
-	if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) {
-		ret = 0; /* Already queued?? */
-		goto out;
-	}
-	if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_DONE) {
-		/* Spec doesn't say anything, seems appropriate tho */
-		ret = -EBUSY;
-		goto out;
-	}
-	sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_QUEUED;
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	list_add(&sbuf->list, &cam->sb_avail);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-	ret = 0;
-  out:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-static int cafe_vidioc_dqbuf(struct file *filp, void *priv,
-		struct v4l2_buffer *buf)
-{
-	struct cafe_camera *cam = filp->private_data;
-	struct cafe_sio_buffer *sbuf;
-	int ret = -EINVAL;
-	unsigned long flags;
-
-	mutex_lock(&cam->s_mutex);
-	if (cam->state != S_STREAMING)
-		goto out_unlock;
-	if (list_empty(&cam->sb_full) && filp->f_flags & O_NONBLOCK) {
-		ret = -EAGAIN;
-		goto out_unlock;
-	}
-
-	while (list_empty(&cam->sb_full) && cam->state == S_STREAMING) {
-		mutex_unlock(&cam->s_mutex);
-		if (wait_event_interruptible(cam->iowait,
-						!list_empty(&cam->sb_full))) {
-			ret = -ERESTARTSYS;
-			goto out;
-		}
-		mutex_lock(&cam->s_mutex);
-	}
-
-	if (cam->state != S_STREAMING)
-		ret = -EINTR;
-	else {
-		spin_lock_irqsave(&cam->dev_lock, flags);
-		/* Should probably recheck !list_empty() here */
-		sbuf = list_entry(cam->sb_full.next,
-				struct cafe_sio_buffer, list);
-		list_del_init(&sbuf->list);
-		spin_unlock_irqrestore(&cam->dev_lock, flags);
-		sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_DONE;
-		*buf = sbuf->v4lbuf;
-		ret = 0;
-	}
-
-  out_unlock:
-	mutex_unlock(&cam->s_mutex);
-  out:
-	return ret;
-}
-
-
-
-static void cafe_v4l_vm_open(struct vm_area_struct *vma)
-{
-	struct cafe_sio_buffer *sbuf = vma->vm_private_data;
-	/*
-	 * Locking: done under mmap_sem, so we don't need to
-	 * go back to the camera lock here.
-	 */
-	sbuf->mapcount++;
-}
-
-
-static void cafe_v4l_vm_close(struct vm_area_struct *vma)
-{
-	struct cafe_sio_buffer *sbuf = vma->vm_private_data;
-
-	mutex_lock(&sbuf->cam->s_mutex);
-	sbuf->mapcount--;
-	/* Docs say we should stop I/O too... */
-	if (sbuf->mapcount == 0)
-		sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_MAPPED;
-	mutex_unlock(&sbuf->cam->s_mutex);
-}
-
-static const struct vm_operations_struct cafe_v4l_vm_ops = {
-	.open = cafe_v4l_vm_open,
-	.close = cafe_v4l_vm_close
-};
-
-
-static int cafe_v4l_mmap(struct file *filp, struct vm_area_struct *vma)
-{
-	struct cafe_camera *cam = filp->private_data;
-	unsigned long offset = vma->vm_pgoff << PAGE_SHIFT;
-	int ret = -EINVAL;
-	int i;
-	struct cafe_sio_buffer *sbuf = NULL;
-
-	if (! (vma->vm_flags & VM_WRITE) || ! (vma->vm_flags & VM_SHARED))
-		return -EINVAL;
-	/*
-	 * Find the buffer they are looking for.
-	 */
-	mutex_lock(&cam->s_mutex);
-	for (i = 0; i < cam->n_sbufs; i++)
-		if (cam->sb_bufs[i].v4lbuf.m.offset == offset) {
-			sbuf = cam->sb_bufs + i;
-			break;
-		}
-	if (sbuf == NULL)
-		goto out;
-
-	ret = remap_vmalloc_range(vma, sbuf->buffer, 0);
-	if (ret)
-		goto out;
-	vma->vm_flags |= VM_DONTEXPAND;
-	vma->vm_private_data = sbuf;
-	vma->vm_ops = &cafe_v4l_vm_ops;
-	sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_MAPPED;
-	cafe_v4l_vm_open(vma);
-	ret = 0;
-  out:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-
-static int cafe_v4l_open(struct file *filp)
-{
-	struct cafe_camera *cam = video_drvdata(filp);
-
-	filp->private_data = cam;
-
-	mutex_lock(&cam->s_mutex);
-	if (cam->users == 0) {
-		cafe_ctlr_power_up(cam);
-		__cafe_cam_reset(cam);
-		cafe_set_config_needed(cam, 1);
-	/* FIXME make sure this is complete */
-	}
-	(cam->users)++;
-	mutex_unlock(&cam->s_mutex);
-	return 0;
-}
-
-
-static int cafe_v4l_release(struct file *filp)
-{
-	struct cafe_camera *cam = filp->private_data;
-
-	mutex_lock(&cam->s_mutex);
-	(cam->users)--;
-	if (filp == cam->owner) {
-		cafe_ctlr_stop_dma(cam);
-		cafe_free_sio_buffers(cam);
-		cam->owner = NULL;
-	}
-	if (cam->users == 0) {
-		cafe_ctlr_power_down(cam);
-		if (alloc_bufs_at_read)
-			cafe_free_dma_bufs(cam);
-	}
-	mutex_unlock(&cam->s_mutex);
-	return 0;
-}
-
-
-
-static unsigned int cafe_v4l_poll(struct file *filp,
-		struct poll_table_struct *pt)
-{
-	struct cafe_camera *cam = filp->private_data;
-
-	poll_wait(filp, &cam->iowait, pt);
-	if (cam->next_buf >= 0)
-		return POLLIN | POLLRDNORM;
-	return 0;
-}
-
-
-
-static int cafe_vidioc_queryctrl(struct file *filp, void *priv,
-		struct v4l2_queryctrl *qc)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, core, queryctrl, qc);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-static int cafe_vidioc_g_ctrl(struct file *filp, void *priv,
-		struct v4l2_control *ctrl)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, core, g_ctrl, ctrl);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-static int cafe_vidioc_s_ctrl(struct file *filp, void *priv,
-		struct v4l2_control *ctrl)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, core, s_ctrl, ctrl);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-
-
-
-
-static int cafe_vidioc_querycap(struct file *file, void *priv,
-		struct v4l2_capability *cap)
-{
-	strcpy(cap->driver, "cafe_ccic");
-	strcpy(cap->card, "cafe_ccic");
-	cap->version = CAFE_VERSION;
-	cap->capabilities = V4L2_CAP_VIDEO_CAPTURE |
-		V4L2_CAP_READWRITE | V4L2_CAP_STREAMING;
-	return 0;
-}
-
-
-/*
- * The default format we use until somebody says otherwise.
- */
-static const struct v4l2_pix_format cafe_def_pix_format = {
-	.width		= VGA_WIDTH,
-	.height		= VGA_HEIGHT,
-	.pixelformat	= V4L2_PIX_FMT_YUYV,
-	.field		= V4L2_FIELD_NONE,
-	.bytesperline	= VGA_WIDTH*2,
-	.sizeimage	= VGA_WIDTH*VGA_HEIGHT*2,
-};
-
-static const enum v4l2_mbus_pixelcode cafe_def_mbus_code =
-					V4L2_MBUS_FMT_YUYV8_2X8;
-
-static int cafe_vidioc_enum_fmt_vid_cap(struct file *filp,
-		void *priv, struct v4l2_fmtdesc *fmt)
-{
-	if (fmt->index >= N_CAFE_FMTS)
-		return -EINVAL;
-	strlcpy(fmt->description, cafe_formats[fmt->index].desc,
-			sizeof(fmt->description));
-	fmt->pixelformat = cafe_formats[fmt->index].pixelformat;
-	return 0;
-}
-
-static int cafe_vidioc_try_fmt_vid_cap(struct file *filp, void *priv,
-		struct v4l2_format *fmt)
-{
-	struct cafe_camera *cam = priv;
-	struct cafe_format_struct *f;
-	struct v4l2_pix_format *pix = &fmt->fmt.pix;
-	struct v4l2_mbus_framefmt mbus_fmt;
-	int ret;
-
-	f = cafe_find_format(pix->pixelformat);
-	pix->pixelformat = f->pixelformat;
-	v4l2_fill_mbus_format(&mbus_fmt, pix, f->mbus_code);
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, video, try_mbus_fmt, &mbus_fmt);
-	mutex_unlock(&cam->s_mutex);
-	v4l2_fill_pix_format(pix, &mbus_fmt);
-	pix->bytesperline = pix->width * f->bpp;
-	pix->sizeimage = pix->height * pix->bytesperline;
-	return ret;
-}
-
-static int cafe_vidioc_s_fmt_vid_cap(struct file *filp, void *priv,
-		struct v4l2_format *fmt)
-{
-	struct cafe_camera *cam = priv;
-	struct cafe_format_struct *f;
-	int ret;
-
-	/*
-	 * Can't do anything if the device is not idle
-	 * Also can't if there are streaming buffers in place.
-	 */
-	if (cam->state != S_IDLE || cam->n_sbufs > 0)
-		return -EBUSY;
-
-	f = cafe_find_format(fmt->fmt.pix.pixelformat);
-
-	/*
-	 * See if the formatting works in principle.
-	 */
-	ret = cafe_vidioc_try_fmt_vid_cap(filp, priv, fmt);
-	if (ret)
-		return ret;
-	/*
-	 * Now we start to change things for real, so let's do it
-	 * under lock.
-	 */
-	mutex_lock(&cam->s_mutex);
-	cam->pix_format = fmt->fmt.pix;
-	cam->mbus_code = f->mbus_code;
-
-	/*
-	 * Make sure we have appropriate DMA buffers.
-	 */
-	ret = -ENOMEM;
-	if (cam->nbufs > 0 && cam->dma_buf_size < cam->pix_format.sizeimage)
-		cafe_free_dma_bufs(cam);
-	if (cam->nbufs == 0) {
-		if (cafe_alloc_dma_bufs(cam, 0))
-			goto out;
-	}
-	/*
-	 * It looks like this might work, so let's program the sensor.
-	 */
-	ret = cafe_cam_configure(cam);
-	if (! ret)
-		ret = cafe_ctlr_configure(cam);
-  out:
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-/*
- * Return our stored notion of how the camera is/should be configured.
- * The V4l2 spec wants us to be smarter, and actually get this from
- * the camera (and not mess with it at open time).  Someday.
- */
-static int cafe_vidioc_g_fmt_vid_cap(struct file *filp, void *priv,
-		struct v4l2_format *f)
-{
-	struct cafe_camera *cam = priv;
-
-	f->fmt.pix = cam->pix_format;
-	return 0;
-}
-
-/*
- * We only have one input - the sensor - so minimize the nonsense here.
- */
-static int cafe_vidioc_enum_input(struct file *filp, void *priv,
-		struct v4l2_input *input)
-{
-	if (input->index != 0)
-		return -EINVAL;
-
-	input->type = V4L2_INPUT_TYPE_CAMERA;
-	input->std = V4L2_STD_ALL; /* Not sure what should go here */
-	strcpy(input->name, "Camera");
-	return 0;
-}
-
-static int cafe_vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
-{
-	*i = 0;
-	return 0;
-}
-
-static int cafe_vidioc_s_input(struct file *filp, void *priv, unsigned int i)
-{
-	if (i != 0)
-		return -EINVAL;
-	return 0;
-}
-
-/* from vivi.c */
-static int cafe_vidioc_s_std(struct file *filp, void *priv, v4l2_std_id *a)
-{
-	return 0;
-}
-
-/*
- * G/S_PARM.  Most of this is done by the sensor, but we are
- * the level which controls the number of read buffers.
- */
-static int cafe_vidioc_g_parm(struct file *filp, void *priv,
-		struct v4l2_streamparm *parms)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, video, g_parm, parms);
-	mutex_unlock(&cam->s_mutex);
-	parms->parm.capture.readbuffers = n_dma_bufs;
-	return ret;
-}
-
-static int cafe_vidioc_s_parm(struct file *filp, void *priv,
-		struct v4l2_streamparm *parms)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, video, s_parm, parms);
-	mutex_unlock(&cam->s_mutex);
-	parms->parm.capture.readbuffers = n_dma_bufs;
-	return ret;
-}
-
-static int cafe_vidioc_g_chip_ident(struct file *file, void *priv,
-		struct v4l2_dbg_chip_ident *chip)
-{
-	struct cafe_camera *cam = priv;
-
-	chip->ident = V4L2_IDENT_NONE;
-	chip->revision = 0;
-	if (v4l2_chip_match_host(&chip->match)) {
-		chip->ident = V4L2_IDENT_CAFE;
-		return 0;
-	}
-	return sensor_call(cam, core, g_chip_ident, chip);
-}
-
-static int cafe_vidioc_enum_framesizes(struct file *filp, void *priv,
-		struct v4l2_frmsizeenum *sizes)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, video, enum_framesizes, sizes);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-static int cafe_vidioc_enum_frameintervals(struct file *filp, void *priv,
-		struct v4l2_frmivalenum *interval)
-{
-	struct cafe_camera *cam = priv;
-	int ret;
-
-	mutex_lock(&cam->s_mutex);
-	ret = sensor_call(cam, video, enum_frameintervals, interval);
-	mutex_unlock(&cam->s_mutex);
-	return ret;
-}
-
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-static int cafe_vidioc_g_register(struct file *file, void *priv,
-		struct v4l2_dbg_register *reg)
-{
-	struct cafe_camera *cam = priv;
-
-	if (v4l2_chip_match_host(&reg->match)) {
-		reg->val = cafe_reg_read(cam, reg->reg);
-		reg->size = 4;
-		return 0;
-	}
-	return sensor_call(cam, core, g_register, reg);
-}
-
-static int cafe_vidioc_s_register(struct file *file, void *priv,
-		struct v4l2_dbg_register *reg)
-{
-	struct cafe_camera *cam = priv;
-
-	if (v4l2_chip_match_host(&reg->match)) {
-		cafe_reg_write(cam, reg->reg, reg->val);
-		return 0;
-	}
-	return sensor_call(cam, core, s_register, reg);
-}
-#endif
-
-/*
- * This template device holds all of those v4l2 methods; we
- * clone it for specific real devices.
- */
-
-static const struct v4l2_file_operations cafe_v4l_fops = {
-	.owner = THIS_MODULE,
-	.open = cafe_v4l_open,
-	.release = cafe_v4l_release,
-	.read = cafe_v4l_read,
-	.poll = cafe_v4l_poll,
-	.mmap = cafe_v4l_mmap,
-	.unlocked_ioctl = video_ioctl2,
-};
-
-static const struct v4l2_ioctl_ops cafe_v4l_ioctl_ops = {
-	.vidioc_querycap 	= cafe_vidioc_querycap,
-	.vidioc_enum_fmt_vid_cap = cafe_vidioc_enum_fmt_vid_cap,
-	.vidioc_try_fmt_vid_cap	= cafe_vidioc_try_fmt_vid_cap,
-	.vidioc_s_fmt_vid_cap	= cafe_vidioc_s_fmt_vid_cap,
-	.vidioc_g_fmt_vid_cap	= cafe_vidioc_g_fmt_vid_cap,
-	.vidioc_enum_input	= cafe_vidioc_enum_input,
-	.vidioc_g_input		= cafe_vidioc_g_input,
-	.vidioc_s_input		= cafe_vidioc_s_input,
-	.vidioc_s_std		= cafe_vidioc_s_std,
-	.vidioc_reqbufs		= cafe_vidioc_reqbufs,
-	.vidioc_querybuf	= cafe_vidioc_querybuf,
-	.vidioc_qbuf		= cafe_vidioc_qbuf,
-	.vidioc_dqbuf		= cafe_vidioc_dqbuf,
-	.vidioc_streamon	= cafe_vidioc_streamon,
-	.vidioc_streamoff	= cafe_vidioc_streamoff,
-	.vidioc_queryctrl	= cafe_vidioc_queryctrl,
-	.vidioc_g_ctrl		= cafe_vidioc_g_ctrl,
-	.vidioc_s_ctrl		= cafe_vidioc_s_ctrl,
-	.vidioc_g_parm		= cafe_vidioc_g_parm,
-	.vidioc_s_parm		= cafe_vidioc_s_parm,
-	.vidioc_enum_framesizes = cafe_vidioc_enum_framesizes,
-	.vidioc_enum_frameintervals = cafe_vidioc_enum_frameintervals,
-	.vidioc_g_chip_ident    = cafe_vidioc_g_chip_ident,
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-	.vidioc_g_register 	= cafe_vidioc_g_register,
-	.vidioc_s_register 	= cafe_vidioc_s_register,
-#endif
-};
-
-static struct video_device cafe_v4l_template = {
-	.name = "cafe",
-	.tvnorms = V4L2_STD_NTSC_M,
-	.current_norm = V4L2_STD_NTSC_M,  /* make mplayer happy */
-
-	.fops = &cafe_v4l_fops,
-	.ioctl_ops = &cafe_v4l_ioctl_ops,
-	.release = video_device_release_empty,
-};
-
-
-/* ---------------------------------------------------------------------- */
-/*
- * Interrupt handler stuff
- */
-
-
-
-static void cafe_frame_tasklet(unsigned long data)
-{
-	struct cafe_camera *cam = (struct cafe_camera *) data;
-	int i;
-	unsigned long flags;
-	struct cafe_sio_buffer *sbuf;
-
-	spin_lock_irqsave(&cam->dev_lock, flags);
-	for (i = 0; i < cam->nbufs; i++) {
-		int bufno = cam->next_buf;
-		if (bufno < 0) {  /* "will never happen" */
-			cam_err(cam, "No valid bufs in tasklet!\n");
-			break;
-		}
-		if (++(cam->next_buf) >= cam->nbufs)
-			cam->next_buf = 0;
-		if (! test_bit(bufno, &cam->flags))
-			continue;
-		if (list_empty(&cam->sb_avail))
-			break;  /* Leave it valid, hope for better later */
-		clear_bit(bufno, &cam->flags);
-		sbuf = list_entry(cam->sb_avail.next,
-				struct cafe_sio_buffer, list);
-		/*
-		 * Drop the lock during the big copy.  This *should* be safe...
-		 */
-		spin_unlock_irqrestore(&cam->dev_lock, flags);
-		memcpy(sbuf->buffer, cam->dma_bufs[bufno],
-				cam->pix_format.sizeimage);
-		sbuf->v4lbuf.bytesused = cam->pix_format.sizeimage;
-		sbuf->v4lbuf.sequence = cam->buf_seq[bufno];
-		sbuf->v4lbuf.flags &= ~V4L2_BUF_FLAG_QUEUED;
-		sbuf->v4lbuf.flags |= V4L2_BUF_FLAG_DONE;
-		spin_lock_irqsave(&cam->dev_lock, flags);
-		list_move_tail(&sbuf->list, &cam->sb_full);
-	}
-	if (! list_empty(&cam->sb_full))
-		wake_up(&cam->iowait);
-	spin_unlock_irqrestore(&cam->dev_lock, flags);
-}
-
-
-
-static void cafe_frame_complete(struct cafe_camera *cam, int frame)
-{
-	/*
-	 * Basic frame housekeeping.
-	 */
-	if (test_bit(frame, &cam->flags) && printk_ratelimit())
-		cam_err(cam, "Frame overrun on %d, frames lost\n", frame);
-	set_bit(frame, &cam->flags);
-	clear_bit(CF_DMA_ACTIVE, &cam->flags);
-	if (cam->next_buf < 0)
-		cam->next_buf = frame;
-	cam->buf_seq[frame] = ++(cam->sequence);
-
-	switch (cam->state) {
-	/*
-	 * If in single read mode, try going speculative.
-	 */
-	    case S_SINGLEREAD:
-		cam->state = S_SPECREAD;
-		cam->specframes = 0;
-		wake_up(&cam->iowait);
-		break;
-
-	/*
-	 * If we are already doing speculative reads, and nobody is
-	 * reading them, just stop.
-	 */
-	    case S_SPECREAD:
-		if (++(cam->specframes) >= cam->nbufs) {
-			cafe_ctlr_stop(cam);
-			cafe_ctlr_irq_disable(cam);
-			cam->state = S_IDLE;
-		}
-		wake_up(&cam->iowait);
-		break;
-	/*
-	 * For the streaming case, we defer the real work to the
-	 * camera tasklet.
-	 *
-	 * FIXME: if the application is not consuming the buffers,
-	 * we should eventually put things on hold and restart in
-	 * vidioc_dqbuf().
-	 */
-	    case S_STREAMING:
-		tasklet_schedule(&cam->s_tasklet);
-		break;
-
-	    default:
-		cam_err(cam, "Frame interrupt in non-operational state\n");
-		break;
-	}
-}
-
-
-
-
-static void cafe_frame_irq(struct cafe_camera *cam, unsigned int irqs)
-{
-	unsigned int frame;
-
-	cafe_reg_write(cam, REG_IRQSTAT, FRAMEIRQS); /* Clear'em all */
-	/*
-	 * Handle any frame completions.  There really should
-	 * not be more than one of these, or we have fallen
-	 * far behind.
-	 */
-	for (frame = 0; frame < cam->nbufs; frame++)
-		if (irqs & (IRQ_EOF0 << frame))
-			cafe_frame_complete(cam, frame);
-	/*
-	 * If a frame starts, note that we have DMA active.  This
-	 * code assumes that we won't get multiple frame interrupts
-	 * at once; may want to rethink that.
-	 */
-	if (irqs & (IRQ_SOF0 | IRQ_SOF1 | IRQ_SOF2))
-		set_bit(CF_DMA_ACTIVE, &cam->flags);
-}
-
-
-
-static irqreturn_t cafe_irq(int irq, void *data)
-{
-	struct cafe_camera *cam = data;
-	unsigned int irqs;
-
-	spin_lock(&cam->dev_lock);
-	irqs = cafe_reg_read(cam, REG_IRQSTAT);
-	if ((irqs & ALLIRQS) == 0) {
-		spin_unlock(&cam->dev_lock);
-		return IRQ_NONE;
-	}
-	if (irqs & FRAMEIRQS)
-		cafe_frame_irq(cam, irqs);
-	if (irqs & TWSIIRQS) {
-		cafe_reg_write(cam, REG_IRQSTAT, TWSIIRQS);
-		wake_up(&cam->smbus_wait);
-	}
-	spin_unlock(&cam->dev_lock);
-	return IRQ_HANDLED;
-}
-
-
-/* -------------------------------------------------------------------------- */
-/*
- * PCI interface stuff.
- */
-
-static const struct dmi_system_id olpc_xo1_dmi[] = {
-	{
-		.matches = {
-			DMI_MATCH(DMI_SYS_VENDOR, "OLPC"),
-			DMI_MATCH(DMI_PRODUCT_NAME, "XO"),
-			DMI_MATCH(DMI_PRODUCT_VERSION, "1"),
-		},
-	},
-	{ }
-};
-
-static int cafe_pci_probe(struct pci_dev *pdev,
-		const struct pci_device_id *id)
-{
-	int ret;
-	struct cafe_camera *cam;
-	struct ov7670_config sensor_cfg = {
-		/* This controller only does SMBUS */
-		.use_smbus = true,
-
-		/*
-		 * Exclude QCIF mode, because it only captures a tiny portion
-		 * of the sensor FOV
-		 */
-		.min_width = 320,
-		.min_height = 240,
-	};
-	struct i2c_board_info ov7670_info = {
-		.type = "ov7670",
-		.addr = 0x42,
-		.platform_data = &sensor_cfg,
-	};
-
-	/*
-	 * Start putting together one of our big camera structures.
-	 */
-	ret = -ENOMEM;
-	cam = kzalloc(sizeof(struct cafe_camera), GFP_KERNEL);
-	if (cam == NULL)
-		goto out;
-	ret = v4l2_device_register(&pdev->dev, &cam->v4l2_dev);
-	if (ret)
-		goto out_free;
-
-	mutex_init(&cam->s_mutex);
-	spin_lock_init(&cam->dev_lock);
-	cam->state = S_NOTREADY;
-	cafe_set_config_needed(cam, 1);
-	init_waitqueue_head(&cam->smbus_wait);
-	init_waitqueue_head(&cam->iowait);
-	cam->pdev = pdev;
-	cam->pix_format = cafe_def_pix_format;
-	cam->mbus_code = cafe_def_mbus_code;
-	INIT_LIST_HEAD(&cam->dev_list);
-	INIT_LIST_HEAD(&cam->sb_avail);
-	INIT_LIST_HEAD(&cam->sb_full);
-	tasklet_init(&cam->s_tasklet, cafe_frame_tasklet, (unsigned long) cam);
-	/*
-	 * Get set up on the PCI bus.
-	 */
-	ret = pci_enable_device(pdev);
-	if (ret)
-		goto out_unreg;
-	pci_set_master(pdev);
-
-	ret = -EIO;
-	cam->regs = pci_iomap(pdev, 0, 0);
-	if (! cam->regs) {
-		printk(KERN_ERR "Unable to ioremap cafe-ccic regs\n");
-		goto out_unreg;
-	}
-	ret = request_irq(pdev->irq, cafe_irq, IRQF_SHARED, "cafe-ccic", cam);
-	if (ret)
-		goto out_iounmap;
-	/*
-	 * Initialize the controller and leave it powered up.  It will
-	 * stay that way until the sensor driver shows up.
-	 */
-	cafe_ctlr_init(cam);
-	cafe_ctlr_power_up(cam);
-	/*
-	 * Set up I2C/SMBUS communications.  We have to drop the mutex here
-	 * because the sensor could attach in this call chain, leading to
-	 * unsightly deadlocks.
-	 */
-	ret = cafe_smbus_setup(cam);
-	if (ret)
-		goto out_freeirq;
-
-	/* Apply XO-1 clock speed */
-	if (dmi_check_system(olpc_xo1_dmi))
-		sensor_cfg.clock_speed = 45;
-
-	cam->sensor_addr = ov7670_info.addr;
-	cam->sensor = v4l2_i2c_new_subdev_board(&cam->v4l2_dev, &cam->i2c_adapter,
-			&ov7670_info, NULL);
-	if (cam->sensor == NULL) {
-		ret = -ENODEV;
-		goto out_smbus;
-	}
-
-	ret = cafe_cam_init(cam);
-	if (ret)
-		goto out_smbus;
-
-	/*
-	 * Get the v4l2 setup done.
-	 */
-	mutex_lock(&cam->s_mutex);
-	cam->vdev = cafe_v4l_template;
-	cam->vdev.debug = 0;
-/*	cam->vdev.debug = V4L2_DEBUG_IOCTL_ARG;*/
-	cam->vdev.v4l2_dev = &cam->v4l2_dev;
-	ret = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1);
-	if (ret)
-		goto out_unlock;
-	video_set_drvdata(&cam->vdev, cam);
-
-	/*
-	 * If so requested, try to get our DMA buffers now.
-	 */
-	if (!alloc_bufs_at_read) {
-		if (cafe_alloc_dma_bufs(cam, 1))
-			cam_warn(cam, "Unable to alloc DMA buffers at load"
-					" will try again later.");
-	}
-
-	mutex_unlock(&cam->s_mutex);
-	return 0;
-
-out_unlock:
-	mutex_unlock(&cam->s_mutex);
-out_smbus:
-	cafe_smbus_shutdown(cam);
-out_freeirq:
-	cafe_ctlr_power_down(cam);
-	free_irq(pdev->irq, cam);
-out_iounmap:
-	pci_iounmap(pdev, cam->regs);
-out_free:
-	v4l2_device_unregister(&cam->v4l2_dev);
-out_unreg:
-	kfree(cam);
-out:
-	return ret;
-}
-
-
-/*
- * Shut down an initialized device
- */
-static void cafe_shutdown(struct cafe_camera *cam)
-{
-/* FIXME: Make sure we take care of everything here */
-	if (cam->n_sbufs > 0)
-		/* What if they are still mapped?  Shouldn't be, but... */
-		cafe_free_sio_buffers(cam);
-	cafe_ctlr_stop_dma(cam);
-	cafe_ctlr_power_down(cam);
-	cafe_smbus_shutdown(cam);
-	cafe_free_dma_bufs(cam);
-	free_irq(cam->pdev->irq, cam);
-	pci_iounmap(cam->pdev, cam->regs);
-	video_unregister_device(&cam->vdev);
-}
-
-
-static void cafe_pci_remove(struct pci_dev *pdev)
-{
-	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
-	struct cafe_camera *cam = to_cam(v4l2_dev);
-
-	if (cam == NULL) {
-		printk(KERN_WARNING "pci_remove on unknown pdev %p\n", pdev);
-		return;
-	}
-	mutex_lock(&cam->s_mutex);
-	if (cam->users > 0)
-		cam_warn(cam, "Removing a device with users!\n");
-	cafe_shutdown(cam);
-	v4l2_device_unregister(&cam->v4l2_dev);
-	kfree(cam);
-/* No unlock - it no longer exists */
-}
-
-
-#ifdef CONFIG_PM
-/*
- * Basic power management.
- */
-static int cafe_pci_suspend(struct pci_dev *pdev, pm_message_t state)
-{
-	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
-	struct cafe_camera *cam = to_cam(v4l2_dev);
-	int ret;
-	enum cafe_state cstate;
-
-	ret = pci_save_state(pdev);
-	if (ret)
-		return ret;
-	cstate = cam->state; /* HACK - stop_dma sets to idle */
-	cafe_ctlr_stop_dma(cam);
-	cafe_ctlr_power_down(cam);
-	pci_disable_device(pdev);
-	cam->state = cstate;
-	return 0;
-}
-
-
-static int cafe_pci_resume(struct pci_dev *pdev)
-{
-	struct v4l2_device *v4l2_dev = dev_get_drvdata(&pdev->dev);
-	struct cafe_camera *cam = to_cam(v4l2_dev);
-	int ret = 0;
-
-	pci_restore_state(pdev);
-	ret = pci_enable_device(pdev);
-
-	if (ret) {
-		cam_warn(cam, "Unable to re-enable device on resume!\n");
-		return ret;
-	}
-	cafe_ctlr_init(cam);
-
-	mutex_lock(&cam->s_mutex);
-	if (cam->users > 0) {
-		cafe_ctlr_power_up(cam);
-		__cafe_cam_reset(cam);
-	} else {
-		cafe_ctlr_power_down(cam);
-	}
-	mutex_unlock(&cam->s_mutex);
-
-	set_bit(CF_CONFIG_NEEDED, &cam->flags);
-	if (cam->state == S_SPECREAD)
-		cam->state = S_IDLE;  /* Don't bother restarting */
-	else if (cam->state == S_SINGLEREAD || cam->state == S_STREAMING)
-		ret = cafe_read_setup(cam, cam->state);
-	return ret;
-}
-
-#endif  /* CONFIG_PM */
-
-
-static struct pci_device_id cafe_ids[] = {
-	{ PCI_DEVICE(PCI_VENDOR_ID_MARVELL,
-		     PCI_DEVICE_ID_MARVELL_88ALP01_CCIC) },
-	{ 0, }
-};
-
-MODULE_DEVICE_TABLE(pci, cafe_ids);
-
-static struct pci_driver cafe_pci_driver = {
-	.name = "cafe1000-ccic",
-	.id_table = cafe_ids,
-	.probe = cafe_pci_probe,
-	.remove = cafe_pci_remove,
-#ifdef CONFIG_PM
-	.suspend = cafe_pci_suspend,
-	.resume = cafe_pci_resume,
-#endif
-};
-
-
-
-
-static int __init cafe_init(void)
-{
-	int ret;
-
-	printk(KERN_NOTICE "Marvell M88ALP01 'CAFE' Camera Controller version %d\n",
-			CAFE_VERSION);
-	ret = pci_register_driver(&cafe_pci_driver);
-	if (ret) {
-		printk(KERN_ERR "Unable to register cafe_ccic driver\n");
-		goto out;
-	}
-	ret = 0;
-
-  out:
-	return ret;
-}
-
-
-static void __exit cafe_exit(void)
-{
-	pci_unregister_driver(&cafe_pci_driver);
-}
-
-module_init(cafe_init);
-module_exit(cafe_exit);