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linux/drivers/media/video/saa7110.c

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/*
* saa7110 - Philips SAA7110(A) video decoder driver
*
* Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
*
* Copyright (C) 1999 Wolfgang Scherr <scherr@net4you.net>
* Copyright (C) 2000 Serguei Miridonov <mirsev@cicese.mx>
* - some corrections for Pinnacle Systems Inc. DC10plus card.
*
* Changes by Ronald Bultje <rbultje@ronald.bitfreak.net>
* - moved over to linux>=2.4.x i2c protocol (1/1/2003)
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <asm/io.h>
#include <asm/uaccess.h>
MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
MODULE_AUTHOR("Pauline Middelink");
MODULE_LICENSE("GPL");
#include <linux/i2c.h>
#define I2C_NAME(s) (s)->name
#include <linux/videodev.h>
#include <media/v4l2-common.h>
#include <linux/video_decoder.h>
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
#define SAA7110_MAX_OUTPUT 0 /* its a decoder only */
#define I2C_SAA7110 0x9C /* or 0x9E */
#define SAA7110_NR_REG 0x35
struct saa7110 {
u8 reg[SAA7110_NR_REG];
int norm;
int input;
int enable;
int bright;
int contrast;
int hue;
int sat;
wait_queue_head_t wq;
};
/* ----------------------------------------------------------------------- */
/* I2C support functions */
/* ----------------------------------------------------------------------- */
static int
saa7110_write (struct i2c_client *client,
u8 reg,
u8 value)
{
struct saa7110 *decoder = i2c_get_clientdata(client);
decoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static int
saa7110_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
{
int ret = -1;
u8 reg = *data; /* first register to write to */
/* Sanity check */
if (reg + (len - 1) > SAA7110_NR_REG)
return ret;
/* the saa7110 has an autoincrement function, use it if
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
struct saa7110 *decoder = i2c_get_clientdata(client);
ret = i2c_master_send(client, data, len);
/* Cache the written data */
memcpy(decoder->reg + reg, data + 1, len - 1);
} else {
for (++data, --len; len; len--) {
if ((ret = saa7110_write(client, reg++,
*data++)) < 0)
break;
}
}
return ret;
}
static inline int
saa7110_read (struct i2c_client *client)
{
return i2c_smbus_read_byte(client);
}
/* ----------------------------------------------------------------------- */
/* SAA7110 functions */
/* ----------------------------------------------------------------------- */
#define FRESP_06H_COMPST 0x03 //0x13
#define FRESP_06H_SVIDEO 0x83 //0xC0
static int
saa7110_selmux (struct i2c_client *client,
int chan)
{
static const unsigned char modes[9][8] = {
/* mode 0 */
{FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
0x44, 0x75, 0x16},
/* mode 1 */
{FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
0x44, 0x75, 0x16},
/* mode 2 */
{FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
0x60, 0xB5, 0x05},
/* mode 3 */
{FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
0x60, 0xB5, 0x05},
/* mode 4 */
{FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
0x60, 0xB5, 0x03},
/* mode 5 */
{FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
0x60, 0xB5, 0x03},
/* mode 6 */
{FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
0x44, 0x75, 0x12},
/* mode 7 */
{FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
0x60, 0xB5, 0x14},
/* mode 8 */
{FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
0x44, 0x75, 0x21}
};
struct saa7110 *decoder = i2c_get_clientdata(client);
const unsigned char *ptr = modes[chan];
saa7110_write(client, 0x06, ptr[0]); /* Luminance control */
saa7110_write(client, 0x20, ptr[1]); /* Analog Control #1 */
saa7110_write(client, 0x21, ptr[2]); /* Analog Control #2 */
saa7110_write(client, 0x22, ptr[3]); /* Mixer Control #1 */
saa7110_write(client, 0x2C, ptr[4]); /* Mixer Control #2 */
saa7110_write(client, 0x30, ptr[5]); /* ADCs gain control */
saa7110_write(client, 0x31, ptr[6]); /* Mixer Control #3 */
saa7110_write(client, 0x21, ptr[7]); /* Analog Control #2 */
decoder->input = chan;
return 0;
}
static const unsigned char initseq[1 + SAA7110_NR_REG] = {
0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
/* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
/* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
/* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
/* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
/* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
};
static int
determine_norm (struct i2c_client *client)
{
DEFINE_WAIT(wait);
struct saa7110 *decoder = i2c_get_clientdata(client);
int status;
/* mode changed, start automatic detection */
saa7110_write_block(client, initseq, sizeof(initseq));
saa7110_selmux(client, decoder->input);
prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(250));
finish_wait(&decoder->wq, &wait);
status = saa7110_read(client);
if (status & 0x40) {
dprintk(1, KERN_INFO "%s: status=0x%02x (no signal)\n",
I2C_NAME(client), status);
return decoder->norm; // no change
}
if ((status & 3) == 0) {
saa7110_write(client, 0x06, 0x83);
if (status & 0x20) {
dprintk(1,
KERN_INFO
"%s: status=0x%02x (NTSC/no color)\n",
I2C_NAME(client), status);
//saa7110_write(client,0x2E,0x81);
return VIDEO_MODE_NTSC;
}
dprintk(1, KERN_INFO "%s: status=0x%02x (PAL/no color)\n",
I2C_NAME(client), status);
//saa7110_write(client,0x2E,0x9A);
return VIDEO_MODE_PAL;
}
//saa7110_write(client,0x06,0x03);
if (status & 0x20) { /* 60Hz */
dprintk(1, KERN_INFO "%s: status=0x%02x (NTSC)\n",
I2C_NAME(client), status);
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x50);
saa7110_write(client, 0x11, 0x2C);
//saa7110_write(client,0x2E,0x81);
return VIDEO_MODE_NTSC;
}
/* 50Hz -> PAL/SECAM */
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client,0x2E,0x9A);
prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(250));
finish_wait(&decoder->wq, &wait);
status = saa7110_read(client);
if ((status & 0x03) == 0x01) {
dprintk(1, KERN_INFO "%s: status=0x%02x (SECAM)\n",
I2C_NAME(client), status);
saa7110_write(client, 0x0D, 0x87);
return VIDEO_MODE_SECAM;
}
dprintk(1, KERN_INFO "%s: status=0x%02x (PAL)\n", I2C_NAME(client),
status);
return VIDEO_MODE_PAL;
}
static int
saa7110_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
{
struct saa7110 *decoder = i2c_get_clientdata(client);
int v;
switch (cmd) {
case 0:
//saa7110_write_block(client, initseq, sizeof(initseq));
break;
case DECODER_GET_CAPABILITIES:
{
struct video_decoder_capability *dc = arg;
dc->flags =
VIDEO_DECODER_PAL | VIDEO_DECODER_NTSC |
VIDEO_DECODER_SECAM | VIDEO_DECODER_AUTO;
dc->inputs = SAA7110_MAX_INPUT;
dc->outputs = SAA7110_MAX_OUTPUT;
}
break;
case DECODER_GET_STATUS:
{
int status;
int res = 0;
status = saa7110_read(client);
dprintk(1, KERN_INFO "%s: status=0x%02x norm=%d\n",
I2C_NAME(client), status, decoder->norm);
if (!(status & 0x40))
res |= DECODER_STATUS_GOOD;
if (status & 0x03)
res |= DECODER_STATUS_COLOR;
switch (decoder->norm) {
case VIDEO_MODE_NTSC:
res |= DECODER_STATUS_NTSC;
break;
case VIDEO_MODE_PAL:
res |= DECODER_STATUS_PAL;
break;
case VIDEO_MODE_SECAM:
res |= DECODER_STATUS_SECAM;
break;
}
*(int *) arg = res;
}
break;
case DECODER_SET_NORM:
v = *(int *) arg;
if (decoder->norm != v) {
decoder->norm = v;
//saa7110_write(client, 0x06, 0x03);
switch (v) {
case VIDEO_MODE_NTSC:
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x50);
saa7110_write(client, 0x11, 0x2C);
//saa7110_write(client, 0x2E, 0x81);
dprintk(1,
KERN_INFO "%s: switched to NTSC\n",
I2C_NAME(client));
break;
case VIDEO_MODE_PAL:
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client, 0x2E, 0x9A);
dprintk(1,
KERN_INFO "%s: switched to PAL\n",
I2C_NAME(client));
break;
case VIDEO_MODE_SECAM:
saa7110_write(client, 0x0D, 0x87);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client, 0x2E, 0x9A);
dprintk(1,
KERN_INFO
"%s: switched to SECAM\n",
I2C_NAME(client));
break;
case VIDEO_MODE_AUTO:
dprintk(1,
KERN_INFO
"%s: TV standard detection...\n",
I2C_NAME(client));
decoder->norm = determine_norm(client);
*(int *) arg = decoder->norm;
break;
default:
return -EPERM;
}
}
break;
case DECODER_SET_INPUT:
v = *(int *) arg;
if (v < 0 || v > SAA7110_MAX_INPUT) {
dprintk(1,
KERN_INFO "%s: input=%d not available\n",
I2C_NAME(client), v);
return -EINVAL;
}
if (decoder->input != v) {
saa7110_selmux(client, v);
dprintk(1, KERN_INFO "%s: switched to input=%d\n",
I2C_NAME(client), v);
}
break;
case DECODER_SET_OUTPUT:
v = *(int *) arg;
/* not much choice of outputs */
if (v != 0)
return -EINVAL;
break;
case DECODER_ENABLE_OUTPUT:
v = *(int *) arg;
if (decoder->enable != v) {
decoder->enable = v;
saa7110_write(client, 0x0E, v ? 0x18 : 0x80);
dprintk(1, KERN_INFO "%s: YUV %s\n", I2C_NAME(client),
v ? "on" : "off");
}
break;
case DECODER_SET_PICTURE:
{
struct video_picture *pic = arg;
if (decoder->bright != pic->brightness) {
/* We want 0 to 255 we get 0-65535 */
decoder->bright = pic->brightness;
saa7110_write(client, 0x19, decoder->bright >> 8);
}
if (decoder->contrast != pic->contrast) {
/* We want 0 to 127 we get 0-65535 */
decoder->contrast = pic->contrast;
saa7110_write(client, 0x13,
decoder->contrast >> 9);
}
if (decoder->sat != pic->colour) {
/* We want 0 to 127 we get 0-65535 */
decoder->sat = pic->colour;
saa7110_write(client, 0x12, decoder->sat >> 9);
}
if (decoder->hue != pic->hue) {
/* We want -128 to 127 we get 0-65535 */
decoder->hue = pic->hue;
saa7110_write(client, 0x07,
(decoder->hue >> 8) - 128);
}
}
break;
case DECODER_DUMP:
for (v = 0; v < SAA7110_NR_REG; v += 16) {
int j;
dprintk(1, KERN_DEBUG "%s: %02x:", I2C_NAME(client),
v);
for (j = 0; j < 16 && v + j < SAA7110_NR_REG; j++)
dprintk(1, " %02x", decoder->reg[v + j]);
dprintk(1, "\n");
}
break;
default:
dprintk(1, KERN_INFO "unknown saa7110_command??(%d)\n",
cmd);
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
/*
* Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
static unsigned short normal_i2c[] = {
I2C_SAA7110 >> 1,
(I2C_SAA7110 >> 1) + 1,
I2C_CLIENT_END
};
static unsigned short ignore = I2C_CLIENT_END;
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_i2c,
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_saa7110;
static int
saa7110_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
{
struct i2c_client *client;
struct saa7110 *decoder;
int rv;
dprintk(1,
KERN_INFO
"saa7110.c: detecting saa7110 client on address 0x%x\n",
address << 1);
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality
(adapter,
I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return 0;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_saa7110;
strlcpy(I2C_NAME(client), "saa7110", sizeof(I2C_NAME(client)));
decoder = kzalloc(sizeof(struct saa7110), GFP_KERNEL);
if (!decoder) {
kfree(client);
return -ENOMEM;
}
decoder->norm = VIDEO_MODE_PAL;
decoder->input = 0;
decoder->enable = 1;
decoder->bright = 32768;
decoder->contrast = 32768;
decoder->hue = 32768;
decoder->sat = 32768;
init_waitqueue_head(&decoder->wq);
i2c_set_clientdata(client, decoder);
rv = i2c_attach_client(client);
if (rv) {
kfree(client);
kfree(decoder);
return rv;
}
rv = saa7110_write_block(client, initseq, sizeof(initseq));
if (rv < 0)
dprintk(1, KERN_ERR "%s_attach: init status %d\n",
I2C_NAME(client), rv);
else {
int ver, status;
saa7110_write(client, 0x21, 0x10);
saa7110_write(client, 0x0e, 0x18);
saa7110_write(client, 0x0D, 0x04);
ver = saa7110_read(client);
saa7110_write(client, 0x0D, 0x06);
//mdelay(150);
status = saa7110_read(client);
dprintk(1,
KERN_INFO
"%s_attach: SAA7110A version %x at 0x%02x, status=0x%02x\n",
I2C_NAME(client), ver, client->addr << 1, status);
saa7110_write(client, 0x0D, 0x86);
saa7110_write(client, 0x0F, 0x10);
saa7110_write(client, 0x11, 0x59);
//saa7110_write(client, 0x2E, 0x9A);
}
//saa7110_selmux(client,0);
//determine_norm(client);
/* setup and implicit mode 0 select has been performed */
return 0;
}
static int
saa7110_attach_adapter (struct i2c_adapter *adapter)
{
dprintk(1,
KERN_INFO
"saa7110.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &saa7110_detect_client);
}
static int
saa7110_detach_client (struct i2c_client *client)
{
struct saa7110 *decoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(decoder);
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_saa7110 = {
.driver = {
.name = "saa7110",
},
.id = I2C_DRIVERID_SAA7110,
.attach_adapter = saa7110_attach_adapter,
.detach_client = saa7110_detach_client,
.command = saa7110_command,
};
static int __init
saa7110_init (void)
{
return i2c_add_driver(&i2c_driver_saa7110);
}
static void __exit
saa7110_exit (void)
{
i2c_del_driver(&i2c_driver_saa7110);
}
module_init(saa7110_init);
module_exit(saa7110_exit);
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