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linux-sg2042/drivers/media/video/adv7170.c

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/*
* adv7170 - adv7170, adv7171 video encoder driver version 0.0.1
*
* Copyright (C) 2002 Maxim Yevtyushkin <max@linuxmedialabs.com>
*
* Based on adv7176 driver by:
*
* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
* 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/delay.h>
#include <linux/errno.h>
#include <linux/fs.h>
#include <linux/kernel.h>
#include <linux/major.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/signal.h>
#include <linux/types.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/uaccess.h>
#include <linux/videodev.h>
#include <linux/video_encoder.h>
MODULE_DESCRIPTION("Analog Devices ADV7170 video encoder driver");
MODULE_AUTHOR("Maxim Yevtyushkin");
MODULE_LICENSE("GPL");
#define I2C_NAME(x) (x)->name
static int debug = 0;
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)
/* ----------------------------------------------------------------------- */
struct adv7170 {
unsigned char reg[128];
int norm;
int input;
int enable;
int bright;
int contrast;
int hue;
int sat;
};
#define I2C_ADV7170 0xd4
#define I2C_ADV7171 0x54
static char adv7170_name[] = "adv7170";
static char adv7171_name[] = "adv7171";
static char *inputs[] = { "pass_through", "play_back" };
static char *norms[] = { "PAL", "NTSC" };
/* ----------------------------------------------------------------------- */
static inline int
adv7170_write (struct i2c_client *client,
u8 reg,
u8 value)
{
struct adv7170 *encoder = i2c_get_clientdata(client);
encoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int
adv7170_read (struct i2c_client *client,
u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int
adv7170_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
{
int ret = -1;
u8 reg;
/* the adv7170 has an autoincrement function, use it if
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
/* do raw I2C, not smbus compatible */
struct adv7170 *encoder = i2c_get_clientdata(client);
u8 block_data[32];
int block_len;
while (len >= 2) {
block_len = 0;
block_data[block_len++] = reg = data[0];
do {
block_data[block_len++] =
encoder->reg[reg++] = data[1];
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg &&
block_len < 32);
if ((ret = i2c_master_send(client, block_data,
block_len)) < 0)
break;
}
} else {
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
if ((ret = adv7170_write(client, reg,
*data++)) < 0)
break;
len -= 2;
}
}
return ret;
}
/* ----------------------------------------------------------------------- */
// Output filter: S-Video Composite
#define MR050 0x11 //0x09
#define MR060 0x14 //0x0c
//---------------------------------------------------------------------------
#define TR0MODE 0x4c
#define TR0RST 0x80
#define TR1CAPT 0x00
#define TR1PLAY 0x00
static const unsigned char init_NTSC[] = {
0x00, 0x10, // MR0
0x01, 0x20, // MR1
0x02, 0x0e, // MR2 RTC control: bits 2 and 1
0x03, 0x80, // MR3
0x04, 0x30, // MR4
0x05, 0x00, // Reserved
0x06, 0x00, // Reserved
0x07, TR0MODE, // TM0
0x08, TR1CAPT, // TM1
0x09, 0x16, // Fsc0
0x0a, 0x7c, // Fsc1
0x0b, 0xf0, // Fsc2
0x0c, 0x21, // Fsc3
0x0d, 0x00, // Subcarrier Phase
0x0e, 0x00, // Closed Capt. Ext 0
0x0f, 0x00, // Closed Capt. Ext 1
0x10, 0x00, // Closed Capt. 0
0x11, 0x00, // Closed Capt. 1
0x12, 0x00, // Pedestal Ctl 0
0x13, 0x00, // Pedestal Ctl 1
0x14, 0x00, // Pedestal Ctl 2
0x15, 0x00, // Pedestal Ctl 3
0x16, 0x00, // CGMS_WSS_0
0x17, 0x00, // CGMS_WSS_1
0x18, 0x00, // CGMS_WSS_2
0x19, 0x00, // Teletext Ctl
};
static const unsigned char init_PAL[] = {
0x00, 0x71, // MR0
0x01, 0x20, // MR1
0x02, 0x0e, // MR2 RTC control: bits 2 and 1
0x03, 0x80, // MR3
0x04, 0x30, // MR4
0x05, 0x00, // Reserved
0x06, 0x00, // Reserved
0x07, TR0MODE, // TM0
0x08, TR1CAPT, // TM1
0x09, 0xcb, // Fsc0
0x0a, 0x8a, // Fsc1
0x0b, 0x09, // Fsc2
0x0c, 0x2a, // Fsc3
0x0d, 0x00, // Subcarrier Phase
0x0e, 0x00, // Closed Capt. Ext 0
0x0f, 0x00, // Closed Capt. Ext 1
0x10, 0x00, // Closed Capt. 0
0x11, 0x00, // Closed Capt. 1
0x12, 0x00, // Pedestal Ctl 0
0x13, 0x00, // Pedestal Ctl 1
0x14, 0x00, // Pedestal Ctl 2
0x15, 0x00, // Pedestal Ctl 3
0x16, 0x00, // CGMS_WSS_0
0x17, 0x00, // CGMS_WSS_1
0x18, 0x00, // CGMS_WSS_2
0x19, 0x00, // Teletext Ctl
};
static int
adv7170_command (struct i2c_client *client,
unsigned int cmd,
void * arg)
{
struct adv7170 *encoder = i2c_get_clientdata(client);
switch (cmd) {
case 0:
#if 0
/* This is just for testing!!! */
adv7170_write_block(client, init_common,
sizeof(init_common));
adv7170_write(client, 0x07, TR0MODE | TR0RST);
adv7170_write(client, 0x07, TR0MODE);
#endif
break;
case ENCODER_GET_CAPABILITIES:
{
struct video_encoder_capability *cap = arg;
cap->flags = VIDEO_ENCODER_PAL |
VIDEO_ENCODER_NTSC;
cap->inputs = 2;
cap->outputs = 1;
}
break;
case ENCODER_SET_NORM:
{
int iarg = *(int *) arg;
dprintk(1, KERN_DEBUG "%s_command: set norm %d",
I2C_NAME(client), iarg);
switch (iarg) {
case VIDEO_MODE_NTSC:
adv7170_write_block(client, init_NTSC,
sizeof(init_NTSC));
if (encoder->input == 0)
adv7170_write(client, 0x02, 0x0e); // Enable genlock
adv7170_write(client, 0x07, TR0MODE | TR0RST);
adv7170_write(client, 0x07, TR0MODE);
break;
case VIDEO_MODE_PAL:
adv7170_write_block(client, init_PAL,
sizeof(init_PAL));
if (encoder->input == 0)
adv7170_write(client, 0x02, 0x0e); // Enable genlock
adv7170_write(client, 0x07, TR0MODE | TR0RST);
adv7170_write(client, 0x07, TR0MODE);
break;
default:
dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
I2C_NAME(client), iarg);
return -EINVAL;
}
dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client),
norms[iarg]);
encoder->norm = iarg;
}
break;
case ENCODER_SET_INPUT:
{
int iarg = *(int *) arg;
/* RJ: *iarg = 0: input is from decoder
*iarg = 1: input is from ZR36060
*iarg = 2: color bar */
dprintk(1, KERN_DEBUG "%s_command: set input from %s\n",
I2C_NAME(client),
iarg == 0 ? "decoder" : "ZR36060");
switch (iarg) {
case 0:
adv7170_write(client, 0x01, 0x20);
adv7170_write(client, 0x08, TR1CAPT); /* TR1 */
adv7170_write(client, 0x02, 0x0e); // Enable genlock
adv7170_write(client, 0x07, TR0MODE | TR0RST);
adv7170_write(client, 0x07, TR0MODE);
//udelay(10);
break;
case 1:
adv7170_write(client, 0x01, 0x00);
adv7170_write(client, 0x08, TR1PLAY); /* TR1 */
adv7170_write(client, 0x02, 0x08);
adv7170_write(client, 0x07, TR0MODE | TR0RST);
adv7170_write(client, 0x07, TR0MODE);
//udelay(10);
break;
default:
dprintk(1, KERN_ERR "%s: illegal input: %d\n",
I2C_NAME(client), iarg);
return -EINVAL;
}
dprintk(1, KERN_DEBUG "%s: switched to %s\n", I2C_NAME(client),
inputs[iarg]);
encoder->input = iarg;
}
break;
case ENCODER_SET_OUTPUT:
{
int *iarg = arg;
/* not much choice of outputs */
if (*iarg != 0) {
return -EINVAL;
}
}
break;
case ENCODER_ENABLE_OUTPUT:
{
int *iarg = arg;
encoder->enable = !!*iarg;
}
break;
default:
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_ADV7170 >> 1, (I2C_ADV7170 >> 1) + 1,
I2C_ADV7171 >> 1, (I2C_ADV7171 >> 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_adv7170;
static int
adv7170_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
{
int i;
struct i2c_client *client;
struct adv7170 *encoder;
char *dname;
dprintk(1,
KERN_INFO
"adv7170.c: detecting adv7170 client on address 0x%x\n",
address << 1);
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (client == 0)
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_adv7170;
if ((client->addr == I2C_ADV7170 >> 1) ||
(client->addr == (I2C_ADV7170 >> 1) + 1)) {
dname = adv7170_name;
} else if ((client->addr == I2C_ADV7171 >> 1) ||
(client->addr == (I2C_ADV7171 >> 1) + 1)) {
dname = adv7171_name;
} else {
/* We should never get here!!! */
kfree(client);
return 0;
}
strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
encoder = kzalloc(sizeof(struct adv7170), GFP_KERNEL);
if (encoder == NULL) {
kfree(client);
return -ENOMEM;
}
encoder->norm = VIDEO_MODE_NTSC;
encoder->input = 0;
encoder->enable = 1;
i2c_set_clientdata(client, encoder);
i = i2c_attach_client(client);
if (i) {
kfree(client);
kfree(encoder);
return i;
}
i = adv7170_write_block(client, init_NTSC, sizeof(init_NTSC));
if (i >= 0) {
i = adv7170_write(client, 0x07, TR0MODE | TR0RST);
i = adv7170_write(client, 0x07, TR0MODE);
i = adv7170_read(client, 0x12);
dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%02x\n",
I2C_NAME(client), i & 1, client->addr << 1);
}
if (i < 0) {
dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
I2C_NAME(client), i);
}
return 0;
}
static int
adv7170_attach_adapter (struct i2c_adapter *adapter)
{
dprintk(1,
KERN_INFO
"adv7170.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &adv7170_detect_client);
}
static int
adv7170_detach_client (struct i2c_client *client)
{
struct adv7170 *encoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(encoder);
kfree(client);
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_adv7170 = {
.driver = {
.name = "adv7170", /* name */
},
.id = I2C_DRIVERID_ADV7170,
.attach_adapter = adv7170_attach_adapter,
.detach_client = adv7170_detach_client,
.command = adv7170_command,
};
static int __init
adv7170_init (void)
{
return i2c_add_driver(&i2c_driver_adv7170);
}
static void __exit
adv7170_exit (void)
{
i2c_del_driver(&i2c_driver_adv7170);
}
module_init(adv7170_init);
module_exit(adv7170_exit);
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