mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-30 16:13:54 +08:00
537 lines
12 KiB
C
537 lines
12 KiB
C
/*
|
|
* adv7175 - adv7175a video encoder driver version 0.0.3
|
|
*
|
|
* 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 (9/9/2002)
|
|
*
|
|
* 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/pci.h>
|
|
#include <linux/signal.h>
|
|
#include <asm/io.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/page.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/types.h>
|
|
|
|
#include <linux/videodev.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
|
|
MODULE_AUTHOR("Dave Perks");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
#include <linux/i2c.h>
|
|
|
|
#define I2C_NAME(s) (s)->name
|
|
|
|
#include <linux/video_encoder.h>
|
|
|
|
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 adv7175 {
|
|
int norm;
|
|
int input;
|
|
int enable;
|
|
int bright;
|
|
int contrast;
|
|
int hue;
|
|
int sat;
|
|
};
|
|
|
|
#define I2C_ADV7175 0xd4
|
|
#define I2C_ADV7176 0x54
|
|
|
|
static char adv7175_name[] = "adv7175";
|
|
static char adv7176_name[] = "adv7176";
|
|
|
|
static char *inputs[] = { "pass_through", "play_back", "color_bar" };
|
|
static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static inline int
|
|
adv7175_write (struct i2c_client *client,
|
|
u8 reg,
|
|
u8 value)
|
|
{
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
static inline int
|
|
adv7175_read (struct i2c_client *client,
|
|
u8 reg)
|
|
{
|
|
return i2c_smbus_read_byte_data(client, reg);
|
|
}
|
|
|
|
static int
|
|
adv7175_write_block (struct i2c_client *client,
|
|
const u8 *data,
|
|
unsigned int len)
|
|
{
|
|
int ret = -1;
|
|
u8 reg;
|
|
|
|
/* the adv7175 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 */
|
|
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++] = data[1];
|
|
reg++;
|
|
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 = adv7175_write(client, reg,
|
|
*data++)) < 0)
|
|
break;
|
|
len -= 2;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
set_subcarrier_freq (struct i2c_client *client,
|
|
int pass_through)
|
|
{
|
|
/* for some reason pass_through NTSC needs
|
|
* a different sub-carrier freq to remain stable. */
|
|
if(pass_through)
|
|
adv7175_write(client, 0x02, 0x00);
|
|
else
|
|
adv7175_write(client, 0x02, 0x55);
|
|
|
|
adv7175_write(client, 0x03, 0x55);
|
|
adv7175_write(client, 0x04, 0x55);
|
|
adv7175_write(client, 0x05, 0x25);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
// Output filter: S-Video Composite
|
|
|
|
#define MR050 0x11 //0x09
|
|
#define MR060 0x14 //0x0c
|
|
|
|
//---------------------------------------------------------------------------
|
|
|
|
#define TR0MODE 0x46
|
|
#define TR0RST 0x80
|
|
|
|
#define TR1CAPT 0x80
|
|
#define TR1PLAY 0x00
|
|
|
|
static const unsigned char init_common[] = {
|
|
|
|
0x00, MR050, /* MR0, PAL enabled */
|
|
0x01, 0x00, /* MR1 */
|
|
0x02, 0x0c, /* subc. freq. */
|
|
0x03, 0x8c, /* subc. freq. */
|
|
0x04, 0x79, /* subc. freq. */
|
|
0x05, 0x26, /* subc. freq. */
|
|
0x06, 0x40, /* subc. phase */
|
|
|
|
0x07, TR0MODE, /* TR0, 16bit */
|
|
0x08, 0x21, /* */
|
|
0x09, 0x00, /* */
|
|
0x0a, 0x00, /* */
|
|
0x0b, 0x00, /* */
|
|
0x0c, TR1CAPT, /* TR1 */
|
|
0x0d, 0x4f, /* MR2 */
|
|
0x0e, 0x00, /* */
|
|
0x0f, 0x00, /* */
|
|
0x10, 0x00, /* */
|
|
0x11, 0x00, /* */
|
|
};
|
|
|
|
static const unsigned char init_pal[] = {
|
|
0x00, MR050, /* MR0, PAL enabled */
|
|
0x01, 0x00, /* MR1 */
|
|
0x02, 0x0c, /* subc. freq. */
|
|
0x03, 0x8c, /* subc. freq. */
|
|
0x04, 0x79, /* subc. freq. */
|
|
0x05, 0x26, /* subc. freq. */
|
|
0x06, 0x40, /* subc. phase */
|
|
};
|
|
|
|
static const unsigned char init_ntsc[] = {
|
|
0x00, MR060, /* MR0, NTSC enabled */
|
|
0x01, 0x00, /* MR1 */
|
|
0x02, 0x55, /* subc. freq. */
|
|
0x03, 0x55, /* subc. freq. */
|
|
0x04, 0x55, /* subc. freq. */
|
|
0x05, 0x25, /* subc. freq. */
|
|
0x06, 0x1a, /* subc. phase */
|
|
};
|
|
|
|
static int
|
|
adv7175_command (struct i2c_client *client,
|
|
unsigned int cmd,
|
|
void *arg)
|
|
{
|
|
struct adv7175 *encoder = i2c_get_clientdata(client);
|
|
|
|
switch (cmd) {
|
|
|
|
case 0:
|
|
/* This is just for testing!!! */
|
|
adv7175_write_block(client, init_common,
|
|
sizeof(init_common));
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
break;
|
|
|
|
case ENCODER_GET_CAPABILITIES:
|
|
{
|
|
struct video_encoder_capability *cap = arg;
|
|
|
|
cap->flags = VIDEO_ENCODER_PAL |
|
|
VIDEO_ENCODER_NTSC |
|
|
VIDEO_ENCODER_SECAM; /* well, hacky */
|
|
cap->inputs = 2;
|
|
cap->outputs = 1;
|
|
}
|
|
break;
|
|
|
|
case ENCODER_SET_NORM:
|
|
{
|
|
int iarg = *(int *) arg;
|
|
|
|
switch (iarg) {
|
|
|
|
case VIDEO_MODE_NTSC:
|
|
adv7175_write_block(client, init_ntsc,
|
|
sizeof(init_ntsc));
|
|
if (encoder->input == 0)
|
|
adv7175_write(client, 0x0d, 0x4f); // Enable genlock
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
break;
|
|
|
|
case VIDEO_MODE_PAL:
|
|
adv7175_write_block(client, init_pal,
|
|
sizeof(init_pal));
|
|
if (encoder->input == 0)
|
|
adv7175_write(client, 0x0d, 0x4f); // Enable genlock
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
break;
|
|
|
|
case VIDEO_MODE_SECAM: // WARNING! ADV7176 does not support SECAM.
|
|
/* This is an attempt to convert
|
|
* SECAM->PAL (typically it does not work
|
|
* due to genlock: when decoder is in SECAM
|
|
* and encoder in in PAL the subcarrier can
|
|
* not be syncronized with horizontal
|
|
* quency) */
|
|
adv7175_write_block(client, init_pal,
|
|
sizeof(init_pal));
|
|
if (encoder->input == 0)
|
|
adv7175_write(client, 0x0d, 0x49); // Disable genlock
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
break;
|
|
default:
|
|
dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
|
|
I2C_NAME(client), iarg);
|
|
return -EINVAL;
|
|
|
|
}
|
|
dprintk(1, KERN_INFO "%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 SAA7110
|
|
*iarg = 1: input is from ZR36060
|
|
*iarg = 2: color bar */
|
|
|
|
switch (iarg) {
|
|
|
|
case 0:
|
|
adv7175_write(client, 0x01, 0x00);
|
|
|
|
if (encoder->norm == VIDEO_MODE_NTSC)
|
|
set_subcarrier_freq(client, 1);
|
|
|
|
adv7175_write(client, 0x0c, TR1CAPT); /* TR1 */
|
|
if (encoder->norm == VIDEO_MODE_SECAM)
|
|
adv7175_write(client, 0x0d, 0x49); // Disable genlock
|
|
else
|
|
adv7175_write(client, 0x0d, 0x4f); // Enable genlock
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
//udelay(10);
|
|
break;
|
|
|
|
case 1:
|
|
adv7175_write(client, 0x01, 0x00);
|
|
|
|
if (encoder->norm == VIDEO_MODE_NTSC)
|
|
set_subcarrier_freq(client, 0);
|
|
|
|
adv7175_write(client, 0x0c, TR1PLAY); /* TR1 */
|
|
adv7175_write(client, 0x0d, 0x49);
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_write(client, 0x07, TR0MODE);
|
|
//udelay(10);
|
|
break;
|
|
|
|
case 2:
|
|
adv7175_write(client, 0x01, 0x80);
|
|
|
|
if (encoder->norm == VIDEO_MODE_NTSC)
|
|
set_subcarrier_freq(client, 0);
|
|
|
|
adv7175_write(client, 0x0d, 0x49);
|
|
adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
adv7175_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_INFO "%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_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
|
|
I2C_ADV7176 >> 1, (I2C_ADV7176 >> 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_adv7175;
|
|
|
|
static int
|
|
adv7175_detect_client (struct i2c_adapter *adapter,
|
|
int address,
|
|
int kind)
|
|
{
|
|
int i;
|
|
struct i2c_client *client;
|
|
struct adv7175 *encoder;
|
|
char *dname;
|
|
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"adv7175.c: detecting adv7175 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_adv7175;
|
|
if ((client->addr == I2C_ADV7175 >> 1) ||
|
|
(client->addr == (I2C_ADV7175 >> 1) + 1)) {
|
|
dname = adv7175_name;
|
|
} else if ((client->addr == I2C_ADV7176 >> 1) ||
|
|
(client->addr == (I2C_ADV7176 >> 1) + 1)) {
|
|
dname = adv7176_name;
|
|
} else {
|
|
/* We should never get here!!! */
|
|
kfree(client);
|
|
return 0;
|
|
}
|
|
strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
|
|
|
|
encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
|
|
if (encoder == NULL) {
|
|
kfree(client);
|
|
return -ENOMEM;
|
|
}
|
|
encoder->norm = VIDEO_MODE_PAL;
|
|
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 = adv7175_write_block(client, init_common, sizeof(init_common));
|
|
if (i >= 0) {
|
|
i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
|
|
i = adv7175_write(client, 0x07, TR0MODE);
|
|
i = adv7175_read(client, 0x12);
|
|
dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\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
|
|
adv7175_attach_adapter (struct i2c_adapter *adapter)
|
|
{
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"adv7175.c: starting probe for adapter %s (0x%x)\n",
|
|
I2C_NAME(adapter), adapter->id);
|
|
return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
|
|
}
|
|
|
|
static int
|
|
adv7175_detach_client (struct i2c_client *client)
|
|
{
|
|
struct adv7175 *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_adv7175 = {
|
|
.driver = {
|
|
.name = "adv7175", /* name */
|
|
},
|
|
|
|
.id = I2C_DRIVERID_ADV7175,
|
|
|
|
.attach_adapter = adv7175_attach_adapter,
|
|
.detach_client = adv7175_detach_client,
|
|
.command = adv7175_command,
|
|
};
|
|
|
|
static int __init
|
|
adv7175_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_adv7175);
|
|
}
|
|
|
|
static void __exit
|
|
adv7175_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_adv7175);
|
|
}
|
|
|
|
module_init(adv7175_init);
|
|
module_exit(adv7175_exit);
|