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V4L/DVB: saa5246a/saa5249: Remove obsolete teletext drivers

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These old i2c teletext drivers are not supported by any hardware and cannot be
tested anymore.

Note that while the mxb board seemingly used the saa5246a driver, in reality
this teletext driver never worked.

These drivers are removed as part of the vtx feature removal, originally
scheduled for 2.6.35.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2010-08-06 11:08:54 -03:00 committed by Mauro Carvalho Chehab
parent be96624a38
commit 563711f16f
5 changed files with 0 additions and 1800 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

20
drivers/media/video/Kconfig
View file

@ -641,26 +641,6 @@ config VIDEO_CPIA_USB
source "drivers/media/video/cpia2/Kconfig"
config VIDEO_SAA5246A
tristate "SAA5246A, SAA5281 Teletext processor"
depends on I2C && VIDEO_V4L2
help
Support for I2C bus based teletext using the SAA5246A or SAA5281
chip. Useful only if you live in Europe.
To compile this driver as a module, choose M here: the
module will be called saa5246a.
config VIDEO_SAA5249
tristate "SAA5249 Teletext processor"
depends on I2C && VIDEO_V4L2
help
Support for I2C bus based teletext using the SAA5249 chip. At the
moment this is only useful on some European WinTV cards.
To compile this driver as a module, choose M here: the
module will be called saa5249.
config VIDEO_VINO
tristate "SGI Vino Video For Linux (EXPERIMENTAL)"
depends on I2C && SGI_IP22 && EXPERIMENTAL && VIDEO_V4L2

2
drivers/media/video/Makefile
View file

@ -33,8 +33,6 @@ obj-$(CONFIG_VIDEO_TVAUDIO) += tvaudio.o
obj-$(CONFIG_VIDEO_TDA7432) += tda7432.o
obj-$(CONFIG_VIDEO_TDA9875) += tda9875.o
obj-$(CONFIG_VIDEO_SAA6588) += saa6588.o
obj-$(CONFIG_VIDEO_SAA5246A) += saa5246a.o
obj-$(CONFIG_VIDEO_SAA5249) += saa5249.o
obj-$(CONFIG_VIDEO_TDA9840) += tda9840.o
obj-$(CONFIG_VIDEO_TEA6415C) += tea6415c.o
obj-$(CONFIG_VIDEO_TEA6420) += tea6420.o

5
drivers/media/video/mxb.c
View file

@ -32,7 +32,6 @@
#include "tea6415c.h"
#include "tea6420.h"
#define I2C_SAA5246A 0x11
#define I2C_SAA7111A 0x24
#define I2C_TDA9840 0x42
#define I2C_TEA6415C 0x43
@ -197,10 +196,6 @@ static int mxb_probe(struct saa7146_dev *dev)
"tda9840", "tda9840", I2C_TDA9840, NULL);
mxb->tuner = v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter,
"tuner", "tuner", I2C_TUNER, NULL);
if (v4l2_i2c_new_subdev(&dev->v4l2_dev, &mxb->i2c_adapter,
"saa5246a", "saa5246a", I2C_SAA5246A, NULL)) {
printk(KERN_INFO "mxb: found teletext decoder\n");
}
/* check if all devices are present */
if (!mxb->tea6420_1 || !mxb->tea6420_2 || !mxb->tea6415c ||

1123
drivers/media/video/saa5246a.c
View file

File diff suppressed because it is too large Load diff

650
drivers/media/video/saa5249.c
View file

@ -1,650 +0,0 @@
/*
* Modified in order to keep it compatible both with new and old videotext IOCTLs by
* Michael Geng <linux@MichaelGeng.de>
*
* Cleaned up to use existing videodev interface and allow the idea
* of multiple teletext decoders on the video4linux iface. Changed i2c
* to cover addressing clashes on device busses. It's also rebuilt so
* you can add arbitary multiple teletext devices to Linux video4linux
* now (well 32 anyway).
*
* 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.
*
* Copyright (c) 1998 Richard Guenther <richard.guenther@student.uni-tuebingen.de>
*
* Derived From
*
* vtx.c:
* This is a loadable character-device-driver for videotext-interfaces
* (aka teletext). Please check the Makefile/README for a list of supported
* interfaces.
*
* Copyright (c) 1994-97 Martin Buck <martin-2.buck@student.uni-ulm.de>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
* USA.
*/
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/mm.h>
#include <linux/init.h>
#include <linux/i2c.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/videotext.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.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
#define NUM_DAUS 4
#define NUM_BUFS 8
static const int disp_modes[8][3] =
{
{ 0x46, 0x03, 0x03 }, /* DISPOFF */
{ 0x46, 0xcc, 0xcc }, /* DISPNORM */
{ 0x44, 0x0f, 0x0f }, /* DISPTRANS */
{ 0x46, 0xcc, 0x46 }, /* DISPINS */
{ 0x44, 0x03, 0x03 }, /* DISPOFF, interlaced */
{ 0x44, 0xcc, 0xcc }, /* DISPNORM, interlaced */
{ 0x44, 0x0f, 0x0f }, /* DISPTRANS, interlaced */
{ 0x44, 0xcc, 0x46 } /* DISPINS, interlaced */
};
#define PAGE_WAIT msecs_to_jiffies(300) /* Time between requesting page and */
/* checking status bits */
#define PGBUF_EXPIRE msecs_to_jiffies(15000) /* Time to wait before retransmitting */
/* page regardless of infobits */
typedef struct {
u8 pgbuf[VTX_VIRTUALSIZE]; /* Page-buffer */
u8 laststat[10]; /* Last value of infobits for DAU */
u8 sregs[7]; /* Page-request registers */
unsigned long expire; /* Time when page will be expired */
unsigned clrfound : 1; /* VTXIOCCLRFOUND has been called */
unsigned stopped : 1; /* VTXIOCSTOPDAU has been called */
} vdau_t;
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;
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
#define NOACK_REPEAT 10 /* Retry access this many times on failure */
#define CLEAR_DELAY msecs_to_jiffies(50) /* Time required to clear a page */
#define READY_TIMEOUT msecs_to_jiffies(30) /* Time to wait for ready signal of I2C-bus interface */
#define INIT_DELAY 500 /* Time in usec to wait at initialization of CEA interface */
#define START_DELAY 10 /* Time in usec to wait before starting write-cycle (CEA) */
#define VTX_DEV_MINOR 0
static struct video_device saa_template; /* Declared near bottom */
/*
* Wait the given number of jiffies (10ms). This calls the scheduler, so the actual
* delay may be longer.
*/
static void jdelay(unsigned long delay)
{
sigset_t oldblocked = current->blocked;
spin_lock_irq(&current->sighand->siglock);
sigfillset(&current->blocked);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
msleep_interruptible(jiffies_to_msecs(delay));
spin_lock_irq(&current->sighand->siglock);
current->blocked = oldblocked;
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
}
/*
* I2C interfaces
*/
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(client, buf, count + 1) == count + 1)
return 0;
return -1;
}
static int i2c_senddata(struct saa5249_device *t, ...)
{
unsigned char buf[64];
int v;
int ct = 0;
va_list argp;
va_start(argp,t);
while ((v = va_arg(argp, int)) != -1)
buf[ct++] = v;
va_end(argp);
return i2c_sendbuf(t, buf[0], ct-1, buf+1);
}
/* Get count number of bytes from I²C-device at address adr, store them in buf. Start & stop
* handshaking is done by this routine, ack will be sent after the last byte to inhibit further
* sending of data. If uaccess is 'true', data is written to user-space with put_user.
* Returns -1 if I²C-device didn't send acknowledge, 0 otherwise
*/
static int i2c_getdata(struct saa5249_device *t, int count, u8 *buf)
{
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 long do_saa5249_ioctl(struct file *file, unsigned int cmd, void *arg)
{
static int virtual_mode = false;
struct saa5249_device *t = video_drvdata(file);
switch (cmd) {
case VTXIOCGETINFO:
{
vtx_info_t *info = arg;
info->version_major = VTX_VER_MAJ;
info->version_minor = VTX_VER_MIN;
info->numpages = NUM_DAUS;
/*info->cct_type = CCT_TYPE;*/
return 0;
}
case VTXIOCCLRPAGE:
{
vtx_pagereq_t *req = arg;
if (req->pgbuf < 0 || req->pgbuf >= NUM_DAUS)
return -EINVAL;
memset(t->vdau[req->pgbuf].pgbuf, ' ', sizeof(t->vdau[0].pgbuf));
t->vdau[req->pgbuf].clrfound = true;
return 0;
}
case VTXIOCCLRFOUND:
{
vtx_pagereq_t *req = arg;
if (req->pgbuf < 0 || req->pgbuf >= NUM_DAUS)
return -EINVAL;
t->vdau[req->pgbuf].clrfound = true;
return 0;
}
case VTXIOCPAGEREQ:
{
vtx_pagereq_t *req = arg;
if (!(req->pagemask & PGMASK_PAGE))
req->page = 0;
if (!(req->pagemask & PGMASK_HOUR))
req->hour = 0;
if (!(req->pagemask & PGMASK_MINUTE))
req->minute = 0;
if (req->page < 0 || req->page > 0x8ff) /* 7FF ?? */
return -EINVAL;
req->page &= 0x7ff;
if (req->hour < 0 || req->hour > 0x3f || req->minute < 0 || req->minute > 0x7f ||
req->pagemask < 0 || req->pagemask >= PGMASK_MAX || req->pgbuf < 0 || req->pgbuf >= NUM_DAUS)
return -EINVAL;
t->vdau[req->pgbuf].sregs[0] = (req->pagemask & PG_HUND ? 0x10 : 0) | (req->page / 0x100);
t->vdau[req->pgbuf].sregs[1] = (req->pagemask & PG_TEN ? 0x10 : 0) | ((req->page / 0x10) & 0xf);
t->vdau[req->pgbuf].sregs[2] = (req->pagemask & PG_UNIT ? 0x10 : 0) | (req->page & 0xf);
t->vdau[req->pgbuf].sregs[3] = (req->pagemask & HR_TEN ? 0x10 : 0) | (req->hour / 0x10);
t->vdau[req->pgbuf].sregs[4] = (req->pagemask & HR_UNIT ? 0x10 : 0) | (req->hour & 0xf);
t->vdau[req->pgbuf].sregs[5] = (req->pagemask & MIN_TEN ? 0x10 : 0) | (req->minute / 0x10);
t->vdau[req->pgbuf].sregs[6] = (req->pagemask & MIN_UNIT ? 0x10 : 0) | (req->minute & 0xf);
t->vdau[req->pgbuf].stopped = false;
t->vdau[req->pgbuf].clrfound = true;
t->is_searching[req->pgbuf] = true;
return 0;
}
case VTXIOCGETSTAT:
{
vtx_pagereq_t *req = arg;
u8 infobits[10];
vtx_pageinfo_t info;
int a;
if (req->pgbuf < 0 || req->pgbuf >= NUM_DAUS)
return -EINVAL;
if (!t->vdau[req->pgbuf].stopped) {
if (i2c_senddata(t, 2, 0, -1) ||
i2c_sendbuf(t, 3, sizeof(t->vdau[0].sregs), t->vdau[req->pgbuf].sregs) ||
i2c_senddata(t, 8, 0, 25, 0, ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', -1) ||
i2c_senddata(t, 2, 0, t->vdau[req->pgbuf].sregs[0] | 8, -1) ||
i2c_senddata(t, 8, 0, 25, 0, -1))
return -EIO;
jdelay(PAGE_WAIT);
if (i2c_getdata(t, 10, infobits))
return -EIO;
if (!(infobits[8] & 0x10) && !(infobits[7] & 0xf0) && /* check FOUND-bit */
(memcmp(infobits, t->vdau[req->pgbuf].laststat, sizeof(infobits)) ||
time_after_eq(jiffies, t->vdau[req->pgbuf].expire)))
{ /* check if new page arrived */
if (i2c_senddata(t, 8, 0, 0, 0, -1) ||
i2c_getdata(t, VTX_PAGESIZE, t->vdau[req->pgbuf].pgbuf))
return -EIO;
t->vdau[req->pgbuf].expire = jiffies + PGBUF_EXPIRE;
memset(t->vdau[req->pgbuf].pgbuf + VTX_PAGESIZE, ' ', VTX_VIRTUALSIZE - VTX_PAGESIZE);
if (t->virtual_mode) {
/* Packet X/24 */
if (i2c_senddata(t, 8, 0, 0x20, 0, -1) ||
i2c_getdata(t, 40, t->vdau[req->pgbuf].pgbuf + VTX_PAGESIZE + 20 * 40))
return -EIO;
/* Packet X/27/0 */
if (i2c_senddata(t, 8, 0, 0x21, 0, -1) ||
i2c_getdata(t, 40, t->vdau[req->pgbuf].pgbuf + VTX_PAGESIZE + 16 * 40))
return -EIO;
/* Packet 8/30/0...8/30/15
* FIXME: AFAIK, the 5249 does hamming-decoding for some bytes in packet 8/30,
* so we should undo this here.
*/
if (i2c_senddata(t, 8, 0, 0x22, 0, -1) ||
i2c_getdata(t, 40, t->vdau[req->pgbuf].pgbuf + VTX_PAGESIZE + 23 * 40))
return -EIO;
}
t->vdau[req->pgbuf].clrfound = false;
memcpy(t->vdau[req->pgbuf].laststat, infobits, sizeof(infobits));
} else {
memcpy(infobits, t->vdau[req->pgbuf].laststat, sizeof(infobits));
}
} else {
memcpy(infobits, t->vdau[req->pgbuf].laststat, sizeof(infobits));
}
info.pagenum = ((infobits[8] << 8) & 0x700) | ((infobits[1] << 4) & 0xf0) | (infobits[0] & 0x0f);
if (info.pagenum < 0x100)
info.pagenum += 0x800;
info.hour = ((infobits[5] << 4) & 0x30) | (infobits[4] & 0x0f);
info.minute = ((infobits[3] << 4) & 0x70) | (infobits[2] & 0x0f);
info.charset = ((infobits[7] >> 1) & 7);
info.delete = !!(infobits[3] & 8);
info.headline = !!(infobits[5] & 4);
info.subtitle = !!(infobits[5] & 8);
info.supp_header = !!(infobits[6] & 1);
info.update = !!(infobits[6] & 2);
info.inter_seq = !!(infobits[6] & 4);
info.dis_disp = !!(infobits[6] & 8);
info.serial = !!(infobits[7] & 1);
info.notfound = !!(infobits[8] & 0x10);
info.pblf = !!(infobits[9] & 0x20);
info.hamming = 0;
for (a = 0; a <= 7; a++) {
if (infobits[a] & 0xf0) {
info.hamming = 1;
break;
}
}
if (t->vdau[req->pgbuf].clrfound)
info.notfound = 1;
if (copy_to_user(req->buffer, &info, sizeof(vtx_pageinfo_t)))
return -EFAULT;
if (!info.hamming && !info.notfound)
t->is_searching[req->pgbuf] = false;
return 0;
}
case VTXIOCGETPAGE:
{
vtx_pagereq_t *req = arg;
int start, end;
if (req->pgbuf < 0 || req->pgbuf >= NUM_DAUS || req->start < 0 ||
req->start > req->end || req->end >= (virtual_mode ? VTX_VIRTUALSIZE : VTX_PAGESIZE))
return -EINVAL;
if (copy_to_user(req->buffer, &t->vdau[req->pgbuf].pgbuf[req->start], req->end - req->start + 1))
return -EFAULT;
/*
* Always read the time directly from SAA5249
*/
if (req->start <= 39 && req->end >= 32) {
int len;
char buf[16];
start = max(req->start, 32);
end = min(req->end, 39);
len = end - start + 1;
if (i2c_senddata(t, 8, 0, 0, start, -1) ||
i2c_getdata(t, len, buf))
return -EIO;
if (copy_to_user(req->buffer + start - req->start, buf, len))
return -EFAULT;
}
/* Insert the current header if DAU is still searching for a page */
if (req->start <= 31 && req->end >= 7 && t->is_searching[req->pgbuf]) {
char buf[32];
int len;
start = max(req->start, 7);
end = min(req->end, 31);
len = end - start + 1;
if (i2c_senddata(t, 8, 0, 0, start, -1) ||
i2c_getdata(t, len, buf))
return -EIO;
if (copy_to_user(req->buffer + start - req->start, buf, len))
return -EFAULT;
}
return 0;
}
case VTXIOCSTOPDAU:
{
vtx_pagereq_t *req = arg;
if (req->pgbuf < 0 || req->pgbuf >= NUM_DAUS)
return -EINVAL;
t->vdau[req->pgbuf].stopped = true;
t->is_searching[req->pgbuf] = false;
return 0;
}
case VTXIOCPUTPAGE:
case VTXIOCSETDISP:
case VTXIOCPUTSTAT:
return 0;
case VTXIOCCLRCACHE:
{
if (i2c_senddata(t, 0, NUM_DAUS, 0, 8, -1) || i2c_senddata(t, 11,
' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ',
' ', ' ', ' ', ' ', ' ', ' ',
-1))
return -EIO;
if (i2c_senddata(t, 3, 0x20, -1))
return -EIO;
jdelay(10 * CLEAR_DELAY); /* I have no idea how long we have to wait here */
return 0;
}
case VTXIOCSETVIRT:
{
/* The SAA5249 has virtual-row reception turned on always */
t->virtual_mode = (int)(long)arg;
return 0;
}
}
return -EINVAL;
}
/*
* Translates old vtx IOCTLs to new ones
*
* This keeps new kernel versions compatible with old userspace programs.
*/
static inline unsigned int vtx_fix_command(unsigned int cmd)
{
switch (cmd) {
case VTXIOCGETINFO_OLD:
cmd = VTXIOCGETINFO;
break;
case VTXIOCCLRPAGE_OLD:
cmd = VTXIOCCLRPAGE;
break;
case VTXIOCCLRFOUND_OLD:
cmd = VTXIOCCLRFOUND;
break;
case VTXIOCPAGEREQ_OLD:
cmd = VTXIOCPAGEREQ;
break;
case VTXIOCGETSTAT_OLD:
cmd = VTXIOCGETSTAT;
break;
case VTXIOCGETPAGE_OLD:
cmd = VTXIOCGETPAGE;
break;
case VTXIOCSTOPDAU_OLD:
cmd = VTXIOCSTOPDAU;
break;
case VTXIOCPUTPAGE_OLD:
cmd = VTXIOCPUTPAGE;
break;
case VTXIOCSETDISP_OLD:
cmd = VTXIOCSETDISP;
break;
case VTXIOCPUTSTAT_OLD:
cmd = VTXIOCPUTSTAT;
break;
case VTXIOCCLRCACHE_OLD:
cmd = VTXIOCCLRCACHE;
break;
case VTXIOCSETVIRT_OLD:
cmd = VTXIOCSETVIRT;
break;
}
return cmd;
}
/*
* Handle the locking
*/
static long saa5249_ioctl(struct file *file,
unsigned int cmd, unsigned long arg)
{
struct saa5249_device *t = video_drvdata(file);
long err;
cmd = vtx_fix_command(cmd);
mutex_lock(&t->lock);
err = video_usercopy(file, cmd, arg, do_saa5249_ioctl);
mutex_unlock(&t->lock);
return err;
}
static int saa5249_open(struct file *file)
{
struct saa5249_device *t = video_drvdata(file);
int pgbuf;
if (test_and_set_bit(0, &t->in_use))
return -EBUSY;
if (i2c_senddata(t, 0, 0, -1) || /* Select R11 */
/* Turn off parity checks (we do this ourselves) */
i2c_senddata(t, 1, disp_modes[t->disp_mode][0], 0, -1) ||
/* Display TV-picture, no virtual rows */
i2c_senddata(t, 4, NUM_DAUS, disp_modes[t->disp_mode][1], disp_modes[t->disp_mode][2], 7, -1))
/* Set display to page 4 */
{
clear_bit(0, &t->in_use);
return -EIO;
}
for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) {
memset(t->vdau[pgbuf].pgbuf, ' ', sizeof(t->vdau[0].pgbuf));
memset(t->vdau[pgbuf].sregs, 0, sizeof(t->vdau[0].sregs));
memset(t->vdau[pgbuf].laststat, 0, sizeof(t->vdau[0].laststat));
t->vdau[pgbuf].expire = 0;
t->vdau[pgbuf].clrfound = true;
t->vdau[pgbuf].stopped = true;
t->is_searching[pgbuf] = false;
}
t->virtual_mode = false;
return 0;
}
static int saa5249_release(struct file *file)
{
struct saa5249_device *t = video_drvdata(file);
i2c_senddata(t, 1, 0x20, -1); /* Turn off CCT */
i2c_senddata(t, 5, 3, 3, -1); /* Turn off TV-display */
clear_bit(0, &t->in_use);
return 0;
}
static const struct v4l2_file_operations saa_fops = {
.owner = THIS_MODULE,
.open = saa5249_open,
.release = saa5249_release,
.ioctl = saa5249_ioctl,
};
static struct video_device saa_template =
{
.name = "saa5249",
.fops = &saa_fops,
.release = video_device_release,
};
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);
}
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 saa5249_device *t;
struct v4l2_subdev *sd;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
v4l_info(client, "VideoText version %d.%d\n",
VTX_VER_MAJ, VTX_VER_MIN);
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 */
t->vdev = video_device_alloc();
if (t->vdev == NULL) {
kfree(t);
kfree(client);
return -ENOMEM;
}
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));
memset(t->vdau[pgbuf].sregs, 0, sizeof(t->vdau[0].sregs));
memset(t->vdau[pgbuf].laststat, 0, sizeof(t->vdau[0].laststat));
t->vdau[pgbuf].expire = 0;
t->vdau[pgbuf].clrfound = true;
t->vdau[pgbuf].stopped = true;
t->is_searching[pgbuf] = false;
}
video_set_drvdata(t->vdev, t);
/* Register it */
err = video_register_device(t->vdev, VFL_TYPE_VTX, -1);
if (err < 0) {
video_device_release(t->vdev);
kfree(t);
return err;
}
return 0;
}
static int saa5249_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct saa5249_device *t = to_dev(sd);
video_unregister_device(t->vdev);
v4l2_device_unregister_subdev(sd);
kfree(t);
return 0;
}
static const struct i2c_device_id saa5249_id[] = {
{ "saa5249", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, saa5249_id);
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "saa5249",
.probe = saa5249_probe,
.remove = saa5249_remove,
.id_table = saa5249_id,
};