* you can add arbitary multiple teletext devices to Linux video4linux
* now (well 32 anyway).
*
- * Alan Cox <Alan.Cox@linux.org>
+ * Alan Cox <alan@lxorguk.ukuu.org.uk>
*
* The original driver was heavily modified to match the i2c interface
* It was truncated to use the WinTV boards, too.
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/i2c.h>
-#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/videotext.h>
-#include <linux/videodev.h>
-#include <media/v4l2-common.h>
+#include <linux/videodev2.h>
+#include <linux/slab.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
#include <media/v4l2-ioctl.h>
-#include <media/v4l2-i2c-drv-legacy.h>
+#include <media/v4l2-i2c-drv.h>
MODULE_AUTHOR("Michael Geng <linux@MichaelGeng.de>");
MODULE_DESCRIPTION("Philips SAA5249 Teletext decoder driver");
MODULE_LICENSE("GPL");
+
#define VTX_VER_MAJ 1
#define VTX_VER_MIN 8
struct saa5249_device
{
+ struct v4l2_subdev sd;
+ struct video_device *vdev;
vdau_t vdau[NUM_DAUS]; /* Data for virtual DAUs (the 5249 only has one */
/* real DAU, so we have to simulate some more) */
int vtx_use_count;
int is_searching[NUM_DAUS];
int disp_mode;
int virtual_mode;
- struct i2c_client *client;
unsigned long in_use;
struct mutex lock;
};
+static inline struct saa5249_device *to_dev(struct v4l2_subdev *sd)
+{
+ return container_of(sd, struct saa5249_device, sd);
+}
+
#define CCTWR 34 /* I²C write/read-address of vtx-chip */
#define CCTRD 35
static int i2c_sendbuf(struct saa5249_device *t, int reg, int count, u8 *data)
{
+ struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
char buf[64];
buf[0] = reg;
memcpy(buf+1, data, count);
- if (i2c_master_send(t->client, buf, count + 1) == count + 1)
+ if (i2c_master_send(client, buf, count + 1) == count + 1)
return 0;
return -1;
}
static int i2c_getdata(struct saa5249_device *t, int count, u8 *buf)
{
- if(i2c_master_recv(t->client, buf, count)!=count)
+ struct i2c_client *client = v4l2_get_subdevdata(&t->sd);
+
+ if (i2c_master_recv(client, buf, count) != count)
return -1;
return 0;
}
* Standard character-device-driver functions
*/
-static int do_saa5249_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, void *arg)
+static long do_saa5249_ioctl(struct file *file, unsigned int cmd, void *arg)
{
static int virtual_mode = false;
struct saa5249_device *t = video_drvdata(file);
* Handle the locking
*/
-static int saa5249_ioctl(struct inode *inode, struct file *file,
+static long saa5249_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct saa5249_device *t = video_drvdata(file);
- int err;
+ long err;
cmd = vtx_fix_command(cmd);
mutex_lock(&t->lock);
- err = video_usercopy(inode,file,cmd,arg,do_saa5249_ioctl);
+ err = video_usercopy(file, cmd, arg, do_saa5249_ioctl);
mutex_unlock(&t->lock);
return err;
}
-static int saa5249_open(struct inode *inode, struct file *file)
+static int saa5249_open(struct file *file)
{
struct saa5249_device *t = video_drvdata(file);
int pgbuf;
- if (t->client == NULL)
- return -ENODEV;
-
if (test_and_set_bit(0, &t->in_use))
return -EBUSY;
-static int saa5249_release(struct inode *inode, struct file *file)
+static int saa5249_release(struct file *file)
{
struct saa5249_device *t = video_drvdata(file);
return 0;
}
-static const struct file_operations saa_fops = {
+static const struct v4l2_file_operations saa_fops = {
.owner = THIS_MODULE,
.open = saa5249_open,
.release = saa5249_release,
.ioctl = saa5249_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = v4l_compat_ioctl32,
-#endif
- .llseek = no_llseek,
};
static struct video_device saa_template =
.release = video_device_release,
};
-/* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END };
+static int saa5249_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+ struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+ return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA5249, 0);
+}
-I2C_CLIENT_INSMOD;
+static const struct v4l2_subdev_core_ops saa5249_core_ops = {
+ .g_chip_ident = saa5249_g_chip_ident,
+};
+
+static const struct v4l2_subdev_ops saa5249_ops = {
+ .core = &saa5249_core_ops,
+};
static int saa5249_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int pgbuf;
int err;
- struct video_device *vd;
struct saa5249_device *t;
+ struct v4l2_subdev *sd;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
t = kzalloc(sizeof(*t), GFP_KERNEL);
if (t == NULL)
return -ENOMEM;
+ sd = &t->sd;
+ v4l2_i2c_subdev_init(sd, client, &saa5249_ops);
mutex_init(&t->lock);
/* Now create a video4linux device */
- vd = kmalloc(sizeof(struct video_device), GFP_KERNEL);
- if (vd == NULL) {
+ t->vdev = video_device_alloc();
+ if (t->vdev == NULL) {
+ kfree(t);
kfree(client);
return -ENOMEM;
}
- i2c_set_clientdata(client, vd);
- memcpy(vd, &saa_template, sizeof(*vd));
+ memcpy(t->vdev, &saa_template, sizeof(*t->vdev));
for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) {
memset(t->vdau[pgbuf].pgbuf, ' ', sizeof(t->vdau[0].pgbuf));
t->vdau[pgbuf].stopped = true;
t->is_searching[pgbuf] = false;
}
- video_set_drvdata(vd, t);
+ video_set_drvdata(t->vdev, t);
/* Register it */
- err = video_register_device(vd, VFL_TYPE_VTX, -1);
+ err = video_register_device(t->vdev, VFL_TYPE_VTX, -1);
if (err < 0) {
+ video_device_release(t->vdev);
kfree(t);
- kfree(vd);
return err;
}
- t->client = client;
return 0;
}
static int saa5249_remove(struct i2c_client *client)
{
- struct video_device *vd = i2c_get_clientdata(client);
+ struct v4l2_subdev *sd = i2c_get_clientdata(client);
+ struct saa5249_device *t = to_dev(sd);
- video_unregister_device(vd);
- kfree(video_get_drvdata(vd));
- kfree(vd);
+ video_unregister_device(t->vdev);
+ v4l2_device_unregister_subdev(sd);
+ kfree(t);
return 0;
}
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "saa5249",
- .driverid = I2C_DRIVERID_SAA5249,
.probe = saa5249_probe,
.remove = saa5249_remove,
.id_table = saa5249_id,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff