*
* 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/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/list.h>
#include <linux/dma-mapping.h>
#include <linux/delay.h>
-#include <linux/debugfs.h>
#include <linux/jiffies.h>
#include <linux/vmalloc.h>
struct pci_dev *pdev;
struct video_device vdev;
struct i2c_adapter i2c_adapter;
- struct i2c_client *sensor;
+ struct v4l2_subdev *sensor;
+ unsigned short sensor_addr;
unsigned char __iomem *regs;
struct list_head dev_list; /* link to other devices */
/* Misc */
wait_queue_head_t smbus_wait; /* Waiting on i2c events */
wait_queue_head_t iowait; /* Waiting on frame data */
-#ifdef CONFIG_VIDEO_ADV_DEBUG
- struct dentry *dfs_regs;
- struct dentry *dfs_cam_regs;
-#endif
};
/*
#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)
{
int ret = -EINVAL;
/*
- * Refuse to talk to anything but OV cam chips. We should
- * never even see an attempt to do so, but one never knows.
- */
- if (cam->sensor && addr != cam->sensor->addr) {
- cam_err(cam, "funky smbus addr %d\n", addr);
- return -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.
*/
};
/* Somebody is on the bus */
-static int cafe_cam_init(struct cafe_camera *cam);
static void cafe_ctlr_stop_dma(struct cafe_camera *cam);
static void cafe_ctlr_power_down(struct cafe_camera *cam);
-static int cafe_smbus_attach(struct i2c_client *client)
-{
- struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter);
- struct cafe_camera *cam = to_cam(v4l2_dev);
-
- /*
- * Don't talk to chips we don't recognize.
- */
- if (client->driver->id == I2C_DRIVERID_OV7670) {
- cam->sensor = client;
- return cafe_cam_init(cam);
- }
- return -EINVAL;
-}
-
-static int cafe_smbus_detach(struct i2c_client *client)
-{
- struct v4l2_device *v4l2_dev = i2c_get_adapdata(client->adapter);
- struct cafe_camera *cam = to_cam(v4l2_dev);
-
- if (cam->sensor == client) {
- cafe_ctlr_stop_dma(cam);
- cafe_ctlr_power_down(cam);
- cam_err(cam, "lost the sensor!\n");
- cam->sensor = NULL; /* Bummer, no camera */
- cam->state = S_NOTREADY;
- }
- return 0;
-}
-
static int cafe_smbus_setup(struct cafe_camera *cam)
{
struct i2c_adapter *adap = &cam->i2c_adapter;
int ret;
cafe_smbus_enable_irq(cam);
- adap->id = I2C_HW_SMBUS_CAFE;
adap->owner = THIS_MODULE;
- adap->client_register = cafe_smbus_attach;
- adap->client_unregister = cafe_smbus_detach;
adap->algo = &cafe_smbus_algo;
strcpy(adap->name, "cafe_ccic");
adap->dev.parent = &cam->pdev->dev;
* Communications with the sensor.
*/
-static int __cafe_cam_cmd(struct cafe_camera *cam, int cmd, void *arg)
-{
- struct i2c_client *sc = cam->sensor;
- int ret;
-
- if (sc == NULL || sc->driver == NULL || sc->driver->command == NULL)
- return -EINVAL;
- ret = sc->driver->command(sc, cmd, arg);
- if (ret == -EPERM) /* Unsupported command */
- return 0;
- return ret;
-}
-
static int __cafe_cam_reset(struct cafe_camera *cam)
{
- int zero = 0;
- return __cafe_cam_cmd(cam, VIDIOC_INT_RESET, &zero);
+ return sensor_call(cam, core, reset, 0);
}
/*
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 = __cafe_cam_cmd(cam, VIDIOC_DBG_G_CHIP_IDENT, &chip);
+ 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->addr != OV7xx0_SID) { */
if (cam->sensor_type != V4L2_IDENT_OV7670) {
- cam_err(cam, "Unsupported sensor type %d", cam->sensor->addr);
+ cam_err(cam, "Unsupported sensor type 0x%x", cam->sensor_type);
ret = -EINVAL;
goto out;
}
memset(&ctrl, 0, sizeof(ctrl));
ctrl.id = V4L2_CID_VFLIP;
ctrl.value = flip;
- return __cafe_cam_cmd(cam, VIDIOC_S_CTRL, &ctrl);
+ return sensor_call(cam, core, s_ctrl, &ctrl);
}
static int cafe_cam_configure(struct cafe_camera *cam)
{
struct v4l2_format fmt;
- int ret, zero = 0;
+ int ret;
if (cam->state != S_IDLE)
return -EINVAL;
fmt.fmt.pix = cam->pix_format;
- ret = __cafe_cam_cmd(cam, VIDIOC_INT_INIT, &zero);
+ ret = sensor_call(cam, core, init, 0);
if (ret == 0)
- ret = __cafe_cam_cmd(cam, VIDIOC_S_FMT, &fmt);
+ ret = sensor_call(cam, video, s_fmt, &fmt);
/*
* OV7670 does weird things if flip is set *before* format...
*/
* 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->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
if (req->memory != V4L2_MEMORY_MMAP)
return -EINVAL;
/*
int ret = -EINVAL;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out;
- if (buf->index < 0 || buf->index >= cam->n_sbufs)
+ if (buf->index >= cam->n_sbufs)
goto out;
*buf = cam->sb_bufs[buf->index].v4lbuf;
ret = 0;
unsigned long flags;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out;
- if (buf->index < 0 || buf->index >= cam->n_sbufs)
+ if (buf->index >= cam->n_sbufs)
goto out;
sbuf = cam->sb_bufs + buf->index;
if (sbuf->v4lbuf.flags & V4L2_BUF_FLAG_QUEUED) {
unsigned long flags;
mutex_lock(&cam->s_mutex);
- if (buf->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- goto out_unlock;
if (cam->state != S_STREAMING)
goto out_unlock;
if (list_empty(&cam->sb_full) && filp->f_flags & O_NONBLOCK) {
mutex_unlock(&sbuf->cam->s_mutex);
}
-static struct vm_operations_struct cafe_v4l_vm_ops = {
+static const struct vm_operations_struct cafe_v4l_vm_ops = {
.open = cafe_v4l_vm_open,
.close = cafe_v4l_vm_close
};
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_QUERYCTRL, qc);
+ ret = sensor_call(cam, core, queryctrl, qc);
mutex_unlock(&cam->s_mutex);
return ret;
}
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_G_CTRL, ctrl);
+ ret = sensor_call(cam, core, g_ctrl, ctrl);
mutex_unlock(&cam->s_mutex);
return ret;
}
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_S_CTRL, ctrl);
+ ret = sensor_call(cam, core, s_ctrl, ctrl);
mutex_unlock(&cam->s_mutex);
return ret;
}
struct cafe_camera *cam = priv;
int ret;
- if (fmt->type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
- return -EINVAL;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_ENUM_FMT, fmt);
+ ret = sensor_call(cam, video, enum_fmt, fmt);
mutex_unlock(&cam->s_mutex);
return ret;
}
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_TRY_FMT, fmt);
+ ret = sensor_call(cam, video, try_fmt, fmt);
mutex_unlock(&cam->s_mutex);
return ret;
}
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_G_PARM, parms);
+ ret = sensor_call(cam, video, g_parm, parms);
mutex_unlock(&cam->s_mutex);
parms->parm.capture.readbuffers = n_dma_bufs;
return ret;
int ret;
mutex_lock(&cam->s_mutex);
- ret = __cafe_cam_cmd(cam, VIDIOC_S_PARM, parms);
+ 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);
+}
+
+#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(®->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(®->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.
.vidioc_s_ctrl = cafe_vidioc_s_ctrl,
.vidioc_g_parm = cafe_vidioc_g_parm,
.vidioc_s_parm = cafe_vidioc_s_parm,
+ .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",
- .minor = -1, /* Get one dynamically */
.tvnorms = V4L2_STD_NTSC_M,
.current_norm = V4L2_STD_NTSC_M, /* make mplayer happy */
/* -------------------------------------------------------------------------- */
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-/*
- * Debugfs stuff.
- */
-
-static char cafe_debug_buf[1024];
-static struct dentry *cafe_dfs_root;
-
-static void cafe_dfs_setup(void)
-{
- cafe_dfs_root = debugfs_create_dir("cafe_ccic", NULL);
- if (IS_ERR(cafe_dfs_root)) {
- cafe_dfs_root = NULL; /* Never mind */
- printk(KERN_NOTICE "cafe_ccic unable to set up debugfs\n");
- }
-}
-
-static void cafe_dfs_shutdown(void)
-{
- if (cafe_dfs_root)
- debugfs_remove(cafe_dfs_root);
-}
-
-static int cafe_dfs_open(struct inode *inode, struct file *file)
-{
- file->private_data = inode->i_private;
- return 0;
-}
-
-static ssize_t cafe_dfs_read_regs(struct file *file,
- char __user *buf, size_t count, loff_t *ppos)
-{
- struct cafe_camera *cam = file->private_data;
- char *s = cafe_debug_buf;
- int offset;
-
- for (offset = 0; offset < 0x44; offset += 4)
- s += sprintf(s, "%02x: %08x\n", offset,
- cafe_reg_read(cam, offset));
- for (offset = 0x88; offset <= 0x90; offset += 4)
- s += sprintf(s, "%02x: %08x\n", offset,
- cafe_reg_read(cam, offset));
- for (offset = 0xb4; offset <= 0xbc; offset += 4)
- s += sprintf(s, "%02x: %08x\n", offset,
- cafe_reg_read(cam, offset));
- for (offset = 0x3000; offset <= 0x300c; offset += 4)
- s += sprintf(s, "%04x: %08x\n", offset,
- cafe_reg_read(cam, offset));
- return simple_read_from_buffer(buf, count, ppos, cafe_debug_buf,
- s - cafe_debug_buf);
-}
-
-static const struct file_operations cafe_dfs_reg_ops = {
- .owner = THIS_MODULE,
- .read = cafe_dfs_read_regs,
- .open = cafe_dfs_open
-};
-
-static ssize_t cafe_dfs_read_cam(struct file *file,
- char __user *buf, size_t count, loff_t *ppos)
-{
- struct cafe_camera *cam = file->private_data;
- char *s = cafe_debug_buf;
- int offset;
-
- if (! cam->sensor)
- return -EINVAL;
- for (offset = 0x0; offset < 0x8a; offset++)
- {
- u8 v;
-
- cafe_smbus_read_data(cam, cam->sensor->addr, offset, &v);
- s += sprintf(s, "%02x: %02x\n", offset, v);
- }
- return simple_read_from_buffer(buf, count, ppos, cafe_debug_buf,
- s - cafe_debug_buf);
-}
-
-static const struct file_operations cafe_dfs_cam_ops = {
- .owner = THIS_MODULE,
- .read = cafe_dfs_read_cam,
- .open = cafe_dfs_open
-};
-
-
-
-static void cafe_dfs_cam_setup(struct cafe_camera *cam)
-{
- char fname[40];
-
- if (!cafe_dfs_root)
- return;
- sprintf(fname, "regs-%d", cam->vdev.num);
- cam->dfs_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
- cam, &cafe_dfs_reg_ops);
- sprintf(fname, "cam-%d", cam->vdev.num);
- cam->dfs_cam_regs = debugfs_create_file(fname, 0444, cafe_dfs_root,
- cam, &cafe_dfs_cam_ops);
-}
-
-
-static void cafe_dfs_cam_shutdown(struct cafe_camera *cam)
-{
- if (! IS_ERR(cam->dfs_regs))
- debugfs_remove(cam->dfs_regs);
- if (! IS_ERR(cam->dfs_cam_regs))
- debugfs_remove(cam->dfs_cam_regs);
-}
-
-#else
-
-#define cafe_dfs_setup()
-#define cafe_dfs_shutdown()
-#define cafe_dfs_cam_setup(cam)
-#define cafe_dfs_cam_shutdown(cam)
-#endif /* CONFIG_VIDEO_ADV_DEBUG */
-
-
-
-
-/* ------------------------------------------------------------------------*/
/*
* PCI interface stuff.
*/
goto out_free;
mutex_init(&cam->s_mutex);
- mutex_lock(&cam->s_mutex);
spin_lock_init(&cam->dev_lock);
cam->state = S_NOTREADY;
cafe_set_config_needed(cam, 1);
* because the sensor could attach in this call chain, leading to
* unsightly deadlocks.
*/
- mutex_unlock(&cam->s_mutex); /* attach can deadlock */
ret = cafe_smbus_setup(cam);
if (ret)
goto out_freeirq;
+
+ cam->sensor_addr = 0x42;
+ cam->sensor = v4l2_i2c_new_subdev(&cam->v4l2_dev, &cam->i2c_adapter,
+ "ov7670", "ov7670", cam->sensor_addr, 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.
*/
cam->vdev.v4l2_dev = &cam->v4l2_dev;
ret = video_register_device(&cam->vdev, VFL_TYPE_GRABBER, -1);
if (ret)
- goto out_smbus;
+ goto out_unlock;
video_set_drvdata(&cam->vdev, cam);
/*
" will try again later.");
}
- cafe_dfs_cam_setup(cam);
mutex_unlock(&cam->s_mutex);
return 0;
+out_unlock:
+ mutex_unlock(&cam->s_mutex);
out_smbus:
cafe_smbus_shutdown(cam);
out_freeirq:
static void cafe_shutdown(struct cafe_camera *cam)
{
/* FIXME: Make sure we take care of everything here */
- cafe_dfs_cam_shutdown(cam);
if (cam->n_sbufs > 0)
/* What if they are still mapped? Shouldn't be, but... */
cafe_free_sio_buffers(cam);
printk(KERN_NOTICE "Marvell M88ALP01 'CAFE' Camera Controller version %d\n",
CAFE_VERSION);
- cafe_dfs_setup();
ret = pci_register_driver(&cafe_pci_driver);
if (ret) {
printk(KERN_ERR "Unable to register cafe_ccic driver\n");
goto out;
}
- request_module("ov7670"); /* FIXME want something more general */
ret = 0;
out:
static void __exit cafe_exit(void)
{
pci_unregister_driver(&cafe_pci_driver);
- cafe_dfs_shutdown();
}
module_init(cafe_init);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff