* 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.
*
* 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:
#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/mutex.h>
+#include <linux/delay.h>
#include <linux/videotext.h>
-#include <linux/videodev.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");
-#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] =
+static const int disp_modes[8][3] =
{
{ 0x46, 0x03, 0x03 }, /* DISPOFF */
{ 0x46, 0xcc, 0xcc }, /* DISPNORM */
-#define PAGE_WAIT (300*HZ/1000) /* Time between requesting page and */
+#define PAGE_WAIT msecs_to_jiffies(300) /* Time between requesting page and */
/* checking status bits */
-#define PGBUF_EXPIRE (15*HZ) /* Time to wait before retransmitting */
+#define PGBUF_EXPIRE msecs_to_jiffies(15000) /* Time to wait before retransmitting */
/* page regardless of infobits */
typedef struct {
u8 pgbuf[VTX_VIRTUALSIZE]; /* Page-buffer */
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;
- struct semaphore lock;
+ 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 (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 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
-/* 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};
-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 */
- .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)
+static void jdelay(unsigned long delay)
{
sigset_t oldblocked = current->blocked;
/*
* I2C interfaces
*/
-
-static int i2c_sendbuf(struct saa5249_device *t, int reg, int count, u8 *data)
+
+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;
}
{
unsigned char buf[64];
int v;
- int ct=0;
+ int ct = 0;
va_list argp;
va_start(argp,t);
-
- while((v=va_arg(argp,int))!=-1)
- buf[ct++]=v;
+
+ 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
+/* 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
+ * 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)
+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 video_device *vd = video_devdata(file);
- struct saa5249_device *t=vd->priv;
+ static int virtual_mode = false;
+ 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;
-
- 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 VTXIOCCLRPAGE:
+ {
+ 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;
+ memset(t->vdau[req->pgbuf].pgbuf, ' ', sizeof(t->vdau[0].pgbuf));
+ 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 VTXIOCCLRFOUND:
+ {
+ vtx_pagereq_t *req = arg;
- 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 (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))
+ 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;
- }
+ 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;
}
+ 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 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 VTXIOCPUTPAGE:
+ case VTXIOCSETDISP:
+ case VTXIOCPUTSTAT:
+ return 0;
- case VTXIOCSETVIRT:
- {
- /* The SAA5249 has virtual-row reception turned on always */
- t->virtual_mode = (int)(long)arg;
- 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;
}
/*
* Handle the locking
*/
-
-static int saa5249_ioctl(struct inode *inode, struct file *file,
- unsigned int cmd, unsigned long arg)
+
+static long saa5249_ioctl(struct file *file,
+ unsigned int cmd, unsigned long arg)
{
- struct video_device *vd = video_devdata(file);
- struct saa5249_device *t=vd->priv;
- int err;
-
+ struct saa5249_device *t = video_drvdata(file);
+ long err;
+
cmd = vtx_fix_command(cmd);
- down(&t->lock);
- err = video_usercopy(inode,file,cmd,arg,do_saa5249_ioctl);
- up(&t->lock);
+ mutex_lock(&t->lock);
+ 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 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) {
- 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));
t->vdau[pgbuf].expire = 0;
- t->vdau[pgbuf].clrfound = TRUE;
- t->vdau[pgbuf].stopped = TRUE;
- t->is_searching[pgbuf] = FALSE;
+ t->vdau[pgbuf].clrfound = true;
+ t->vdau[pgbuf].stopped = true;
+ t->is_searching[pgbuf] = false;
}
- t->virtual_mode=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)
+static int saa5249_release(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 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,
- .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,
+ .name = "saa5249",
.fops = &saa_fops,
+ .release = video_device_release,
};
-MODULE_LICENSE("GPL");
+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,
+};
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff