diff options
Diffstat (limited to 'drivers/media/video/saa5249.c')
| -rw-r--r-- | drivers/media/video/saa5249.c | 725 |
1 files changed, 725 insertions, 0 deletions
diff --git a/drivers/media/video/saa5249.c b/drivers/media/video/saa5249.c new file mode 100644 index 00000000000..d74caa139f0 --- /dev/null +++ b/drivers/media/video/saa5249.c @@ -0,0 +1,725 @@ +/* + * 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.Cox@linux.org> + * + * 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> + * + * $Id: saa5249.c,v 1.1 1998/03/30 22:23:23 alan Exp $ + * + * 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/sched.h> +#include <linux/mm.h> +#include <linux/errno.h> +#include <linux/delay.h> +#include <linux/ioport.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <stdarg.h> +#include <linux/i2c.h> +#include <linux/videotext.h> +#include <linux/videodev.h> + +#include <asm/io.h> +#include <asm/uaccess.h> + +#define VTX_VER_MAJ 1 +#define VTX_VER_MIN 8 + + + +#define NUM_DAUS 4 +#define NUM_BUFS 8 +#define IF_NAME "SAA5249" + +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 (300*HZ/1000) /* Time between requesting page and */ + /* checking status bits */ +#define PGBUF_EXPIRE (15*HZ) /* 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 +{ + 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; + struct semaphore lock; +}; + + +#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 (HZ/20) /* Time required to clear a page */ +#define READY_TIMEOUT (30*HZ/1000) /* 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 + +/* General defines and debugging support */ + +#ifndef FALSE +#define FALSE 0 +#define TRUE 1 +#endif + +#define RESCHED do { cond_resched(); } while(0) + +static struct video_device saa_template; /* Declared near bottom */ + +/* Addresses to scan */ +static unsigned short normal_i2c[] = {34>>1,I2C_CLIENT_END}; +static unsigned short normal_i2c_range[] = {I2C_CLIENT_END}; +I2C_CLIENT_INSMOD; + +static struct i2c_client client_template; + +static int saa5249_attach(struct i2c_adapter *adap, int addr, int kind) +{ + int pgbuf; + int err; + struct i2c_client *client; + struct video_device *vd; + struct saa5249_device *t; + + printk(KERN_INFO "saa5249: teletext chip found.\n"); + client=kmalloc(sizeof(*client), GFP_KERNEL); + if(client==NULL) + return -ENOMEM; + client_template.adapter = adap; + client_template.addr = addr; + memcpy(client, &client_template, sizeof(*client)); + t = kmalloc(sizeof(*t), GFP_KERNEL); + if(t==NULL) + { + kfree(client); + return -ENOMEM; + } + memset(t, 0, sizeof(*t)); + strlcpy(client->name, IF_NAME, I2C_NAME_SIZE); + init_MUTEX(&t->lock); + + /* + * Now create a video4linux device + */ + + vd = (struct video_device *)kmalloc(sizeof(struct video_device), GFP_KERNEL); + if(vd==NULL) + { + kfree(t); + kfree(client); + return -ENOMEM; + } + i2c_set_clientdata(client, vd); + memcpy(vd, &saa_template, sizeof(*vd)); + + 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; + } + vd->priv=t; + + + /* + * Register it + */ + + if((err=video_register_device(vd, VFL_TYPE_VTX,-1))<0) + { + kfree(t); + kfree(vd); + kfree(client); + return err; + } + t->client = client; + i2c_attach_client(client); + return 0; +} + +/* + * We do most of the hard work when we become a device on the i2c. + */ + +static int saa5249_probe(struct i2c_adapter *adap) +{ + if (adap->class & I2C_CLASS_TV_ANALOG) + return i2c_probe(adap, &addr_data, saa5249_attach); + return 0; +} + +static int saa5249_detach(struct i2c_client *client) +{ + struct video_device *vd = i2c_get_clientdata(client); + i2c_detach_client(client); + video_unregister_device(vd); + kfree(vd->priv); + kfree(vd); + kfree(client); + return 0; +} + +static int saa5249_command(struct i2c_client *device, + unsigned int cmd, void *arg) +{ + return -EINVAL; +} + +/* new I2C driver support */ + +static struct i2c_driver i2c_driver_videotext = +{ + .owner = THIS_MODULE, + .name = IF_NAME, /* name */ + .id = I2C_DRIVERID_SAA5249, /* in i2c.h */ + .flags = I2C_DF_NOTIFY, + .attach_adapter = saa5249_probe, + .detach_client = saa5249_detach, + .command = saa5249_command +}; + +static struct i2c_client client_template = { + .driver = &i2c_driver_videotext, + .name = "(unset)", +}; + +/* + * 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(¤t->sighand->siglock); + sigfillset(¤t->blocked); + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); + msleep_interruptible(jiffies_to_msecs(delay)); + + spin_lock_irq(¤t->sighand->siglock); + current->blocked = oldblocked; + recalc_sigpending(); + spin_unlock_irq(¤t->sighand->siglock); +} + + +/* + * I2C interfaces + */ + +static int i2c_sendbuf(struct saa5249_device *t, int reg, int count, u8 *data) +{ + char buf[64]; + + buf[0] = reg; + memcpy(buf+1, data, count); + + if(i2c_master_send(t->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; + 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) +{ + if(i2c_master_recv(t->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 int virtual_mode = FALSE; + struct video_device *vd = video_devdata(file); + struct saa5249_device *t=vd->priv; + + 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 int saa5249_ioctl(struct inode *inode, struct file *file, + unsigned int cmd, unsigned long arg) +{ + struct video_device *vd = video_devdata(file); + struct saa5249_device *t=vd->priv; + int err; + + cmd = vtx_fix_command(cmd); + down(&t->lock); + err = video_usercopy(inode,file,cmd,arg,do_saa5249_ioctl); + up(&t->lock); + return err; +} + +static int saa5249_open(struct inode *inode, struct file *file) +{ + struct video_device *vd = video_devdata(file); + struct saa5249_device *t=vd->priv; + int err,pgbuf; + + err = video_exclusive_open(inode,file); + if (err < 0) + return err; + + if (t->client==NULL) { + err = -ENODEV; + goto fail; + } + + 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 */ + + { + err = -EIO; + goto fail; + } + + 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; + + fail: + video_exclusive_release(inode,file); + return err; +} + + + +static int saa5249_release(struct inode *inode, struct file *file) +{ + struct video_device *vd = video_devdata(file); + struct saa5249_device *t=vd->priv; + i2c_senddata(t, 1, 0x20, -1); /* Turn off CCT */ + i2c_senddata(t, 5, 3, 3, -1); /* Turn off TV-display */ + video_exclusive_release(inode,file); + return 0; +} + +static int __init init_saa_5249 (void) +{ + printk(KERN_INFO "SAA5249 driver (" IF_NAME " interface) for VideoText version %d.%d\n", + VTX_VER_MAJ, VTX_VER_MIN); + return i2c_add_driver(&i2c_driver_videotext); +} + +static void __exit cleanup_saa_5249 (void) +{ + i2c_del_driver(&i2c_driver_videotext); +} + +module_init(init_saa_5249); +module_exit(cleanup_saa_5249); + +static struct file_operations saa_fops = { + .owner = THIS_MODULE, + .open = saa5249_open, + .release = saa5249_release, + .ioctl = saa5249_ioctl, + .llseek = no_llseek, +}; + +static struct video_device saa_template = +{ + .owner = THIS_MODULE, + .name = IF_NAME, + .type = VID_TYPE_TELETEXT, /*| VID_TYPE_TUNER ?? */ + .hardware = VID_HARDWARE_SAA5249, + .fops = &saa_fops, +}; + +MODULE_LICENSE("GPL"); |