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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,
|