diff options
Diffstat (limited to 'drivers/media/video/saa5249.c')
| -rw-r--r-- | drivers/media/video/saa5249.c | 704 |
1 files changed, 311 insertions, 393 deletions
diff --git a/drivers/media/video/saa5249.c b/drivers/media/video/saa5249.c index 0d639738d4e..3bb959c25d9 100644 --- a/drivers/media/video/saa5249.c +++ b/drivers/media/video/saa5249.c @@ -15,8 +15,6 @@ * * 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: @@ -45,33 +43,28 @@ #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/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 <media/v4l2-ioctl.h> -#include <linux/mutex.h> - +#include <media/v4l2-i2c-drv-legacy.h> -#include <asm/io.h> -#include <asm/uaccess.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 -#define IF_NAME "SAA5249" static const int disp_modes[8][3] = { @@ -109,6 +102,7 @@ struct saa5249_device int disp_mode; int virtual_mode; struct i2c_client *client; + unsigned long in_use; struct mutex lock; }; @@ -123,125 +117,8 @@ struct saa5249_device #define VTX_DEV_MINOR 0 -/* General defines and debugging support */ - -#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}; - -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 = kzalloc(sizeof(*t), GFP_KERNEL); - if(t==NULL) - { - kfree(client); - return -ENOMEM; - } - strlcpy(client->name, IF_NAME, I2C_NAME_SIZE); - mutex_init(&t->lock); - - /* - * Now create a video4linux device - */ - - vd = 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; -} - -/* new I2C driver support */ - -static struct i2c_driver i2c_driver_videotext = -{ - .driver = { - .name = IF_NAME, /* name */ - }, - .id = I2C_DRIVERID_SAA5249, /* in i2c.h */ - .attach_adapter = saa5249_probe, - .detach_client = saa5249_detach, -}; - -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. @@ -275,7 +152,7 @@ static int i2c_sendbuf(struct saa5249_device *t, int reg, int count, u8 *data) buf[0] = reg; memcpy(buf+1, data, count); - if(i2c_master_send(t->client, buf, count+1)==count+1) + if (i2c_master_send(t->client, buf, count + 1) == count + 1) return 0; return -1; } @@ -317,246 +194,236 @@ 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; + struct saa5249_device *t = video_drvdata(file); - switch(cmd) + switch (cmd) { + case VTXIOCGETINFO: { - 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; - } + 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; + 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; - } + 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; + 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; - } + 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 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; + 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)) + 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].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 - { + 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; + 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; } - return 0; } + 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)) + 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; - - /* - * 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; } + return 0; + } - case VTXIOCSTOPDAU: - { - vtx_pagereq_t *req = arg; + 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; - } + 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 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 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; - } + case VTXIOCSETVIRT: + { + /* The SAA5249 has virtual-row reception turned on always */ + t->virtual_mode = (int)(long)arg; + return 0; + } } return -EINVAL; } @@ -616,8 +483,7 @@ static inline unsigned int vtx_fix_command(unsigned int cmd) 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; + struct saa5249_device *t = video_drvdata(file); int err; cmd = vtx_fix_command(cmd); @@ -629,32 +495,27 @@ static int saa5249_ioctl(struct inode *inode, struct file *file, 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; + struct saa5249_device *t = video_drvdata(file); + int pgbuf; - err = video_exclusive_open(inode,file); - if (err < 0) - return err; + if (t->client == NULL) + return -ENODEV; - if (t->client==NULL) { - err = -ENODEV; - goto fail; - } + 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) */ + 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 */ - + /* 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; + clear_bit(0, &t->in_use); + return -EIO; } - for (pgbuf = 0; pgbuf < NUM_DAUS; pgbuf++) - { + 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)); @@ -665,39 +526,20 @@ static int saa5249_open(struct inode *inode, struct file *file) } 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; + 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 */ - video_exclusive_release(inode,file); + clear_bit(0, &t->in_use); 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 const struct file_operations saa_fops = { .owner = THIS_MODULE, .open = saa5249_open, @@ -711,8 +553,84 @@ static const struct file_operations saa_fops = { static struct video_device saa_template = { - .name = IF_NAME, + .name = "saa5249", .fops = &saa_fops, + .release = video_device_release, }; -MODULE_LICENSE("GPL"); +/* Addresses to scan */ +static unsigned short normal_i2c[] = { 0x22 >> 1, I2C_CLIENT_END }; + +I2C_CLIENT_INSMOD; + +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; + + 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; + mutex_init(&t->lock); + + /* Now create a video4linux device */ + vd = kmalloc(sizeof(struct video_device), GFP_KERNEL); + if (vd == NULL) { + 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; + } + video_set_drvdata(vd, t); + + /* Register it */ + err = video_register_device(vd, VFL_TYPE_VTX, -1); + if (err < 0) { + 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); + + video_unregister_device(vd); + kfree(video_get_drvdata(vd)); + kfree(vd); + 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", + .driverid = I2C_DRIVERID_SAA5249, + .probe = saa5249_probe, + .remove = saa5249_remove, + .id_table = saa5249_id, +}; |