mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 10:29:37 +00:00
507 lines
12 KiB
C
507 lines
12 KiB
C
/*
|
|
* saa7185 - Philips SAA7185B video encoder driver version 0.0.3
|
|
*
|
|
* Copyright (C) 1998 Dave Perks <dperks@ibm.net>
|
|
*
|
|
* Slight changes for video timing and attachment output by
|
|
* Wolfgang Scherr <scherr@net4you.net>
|
|
*
|
|
* 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/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("Philips SAA7185 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 saa7185 {
|
|
unsigned char reg[128];
|
|
|
|
int norm;
|
|
int enable;
|
|
int bright;
|
|
int contrast;
|
|
int hue;
|
|
int sat;
|
|
};
|
|
|
|
#define I2C_SAA7185 0x88
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static inline int
|
|
saa7185_read (struct i2c_client *client)
|
|
{
|
|
return i2c_smbus_read_byte(client);
|
|
}
|
|
|
|
static int
|
|
saa7185_write (struct i2c_client *client,
|
|
u8 reg,
|
|
u8 value)
|
|
{
|
|
struct saa7185 *encoder = i2c_get_clientdata(client);
|
|
|
|
dprintk(1, KERN_DEBUG "SAA7185: %02x set to %02x\n", reg, value);
|
|
encoder->reg[reg] = value;
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
|
}
|
|
|
|
static int
|
|
saa7185_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 */
|
|
struct saa7185 *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 = saa7185_write(client, reg,
|
|
*data++)) < 0)
|
|
break;
|
|
len -= 2;
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const unsigned char init_common[] = {
|
|
0x3a, 0x0f, /* CBENB=0, V656=0, VY2C=1,
|
|
* YUV2C=1, MY2C=1, MUV2C=1 */
|
|
|
|
0x42, 0x6b, /* OVLY0=107 */
|
|
0x43, 0x00, /* OVLU0=0 white */
|
|
0x44, 0x00, /* OVLV0=0 */
|
|
0x45, 0x22, /* OVLY1=34 */
|
|
0x46, 0xac, /* OVLU1=172 yellow */
|
|
0x47, 0x0e, /* OVLV1=14 */
|
|
0x48, 0x03, /* OVLY2=3 */
|
|
0x49, 0x1d, /* OVLU2=29 cyan */
|
|
0x4a, 0xac, /* OVLV2=172 */
|
|
0x4b, 0xf0, /* OVLY3=240 */
|
|
0x4c, 0xc8, /* OVLU3=200 green */
|
|
0x4d, 0xb9, /* OVLV3=185 */
|
|
0x4e, 0xd4, /* OVLY4=212 */
|
|
0x4f, 0x38, /* OVLU4=56 magenta */
|
|
0x50, 0x47, /* OVLV4=71 */
|
|
0x51, 0xc1, /* OVLY5=193 */
|
|
0x52, 0xe3, /* OVLU5=227 red */
|
|
0x53, 0x54, /* OVLV5=84 */
|
|
0x54, 0xa3, /* OVLY6=163 */
|
|
0x55, 0x54, /* OVLU6=84 blue */
|
|
0x56, 0xf2, /* OVLV6=242 */
|
|
0x57, 0x90, /* OVLY7=144 */
|
|
0x58, 0x00, /* OVLU7=0 black */
|
|
0x59, 0x00, /* OVLV7=0 */
|
|
|
|
0x5a, 0x00, /* CHPS=0 */
|
|
0x5b, 0x76, /* GAINU=118 */
|
|
0x5c, 0xa5, /* GAINV=165 */
|
|
0x5d, 0x3c, /* BLCKL=60 */
|
|
0x5e, 0x3a, /* BLNNL=58 */
|
|
0x5f, 0x3a, /* CCRS=0, BLNVB=58 */
|
|
0x60, 0x00, /* NULL */
|
|
|
|
/* 0x61 - 0x66 set according to norm */
|
|
|
|
0x67, 0x00, /* 0 : caption 1st byte odd field */
|
|
0x68, 0x00, /* 0 : caption 2nd byte odd field */
|
|
0x69, 0x00, /* 0 : caption 1st byte even field */
|
|
0x6a, 0x00, /* 0 : caption 2nd byte even field */
|
|
|
|
0x6b, 0x91, /* MODIN=2, PCREF=0, SCCLN=17 */
|
|
0x6c, 0x20, /* SRCV1=0, TRCV2=1, ORCV1=0, PRCV1=0,
|
|
* CBLF=0, ORCV2=0, PRCV2=0 */
|
|
0x6d, 0x00, /* SRCM1=0, CCEN=0 */
|
|
|
|
0x6e, 0x0e, /* HTRIG=0x005, approx. centered, at
|
|
* least for PAL */
|
|
0x6f, 0x00, /* HTRIG upper bits */
|
|
0x70, 0x20, /* PHRES=0, SBLN=1, VTRIG=0 */
|
|
|
|
/* The following should not be needed */
|
|
|
|
0x71, 0x15, /* BMRQ=0x115 */
|
|
0x72, 0x90, /* EMRQ=0x690 */
|
|
0x73, 0x61, /* EMRQ=0x690, BMRQ=0x115 */
|
|
0x74, 0x00, /* NULL */
|
|
0x75, 0x00, /* NULL */
|
|
0x76, 0x00, /* NULL */
|
|
0x77, 0x15, /* BRCV=0x115 */
|
|
0x78, 0x90, /* ERCV=0x690 */
|
|
0x79, 0x61, /* ERCV=0x690, BRCV=0x115 */
|
|
|
|
/* Field length controls */
|
|
|
|
0x7a, 0x70, /* FLC=0 */
|
|
|
|
/* The following should not be needed if SBLN = 1 */
|
|
|
|
0x7b, 0x16, /* FAL=22 */
|
|
0x7c, 0x35, /* LAL=244 */
|
|
0x7d, 0x20, /* LAL=244, FAL=22 */
|
|
};
|
|
|
|
static const unsigned char init_pal[] = {
|
|
0x61, 0x1e, /* FISE=0, PAL=1, SCBW=1, RTCE=1,
|
|
* YGS=1, INPI=0, DOWN=0 */
|
|
0x62, 0xc8, /* DECTYP=1, BSTA=72 */
|
|
0x63, 0xcb, /* FSC0 */
|
|
0x64, 0x8a, /* FSC1 */
|
|
0x65, 0x09, /* FSC2 */
|
|
0x66, 0x2a, /* FSC3 */
|
|
};
|
|
|
|
static const unsigned char init_ntsc[] = {
|
|
0x61, 0x1d, /* FISE=1, PAL=0, SCBW=1, RTCE=1,
|
|
* YGS=1, INPI=0, DOWN=0 */
|
|
0x62, 0xe6, /* DECTYP=1, BSTA=102 */
|
|
0x63, 0x1f, /* FSC0 */
|
|
0x64, 0x7c, /* FSC1 */
|
|
0x65, 0xf0, /* FSC2 */
|
|
0x66, 0x21, /* FSC3 */
|
|
};
|
|
|
|
static int
|
|
saa7185_command (struct i2c_client *client,
|
|
unsigned int cmd,
|
|
void *arg)
|
|
{
|
|
struct saa7185 *encoder = i2c_get_clientdata(client);
|
|
|
|
switch (cmd) {
|
|
|
|
case 0:
|
|
saa7185_write_block(client, init_common,
|
|
sizeof(init_common));
|
|
switch (encoder->norm) {
|
|
|
|
case VIDEO_MODE_NTSC:
|
|
saa7185_write_block(client, init_ntsc,
|
|
sizeof(init_ntsc));
|
|
break;
|
|
|
|
case VIDEO_MODE_PAL:
|
|
saa7185_write_block(client, init_pal,
|
|
sizeof(init_pal));
|
|
break;
|
|
}
|
|
|
|
break;
|
|
|
|
case ENCODER_GET_CAPABILITIES:
|
|
{
|
|
struct video_encoder_capability *cap = arg;
|
|
|
|
cap->flags =
|
|
VIDEO_ENCODER_PAL | VIDEO_ENCODER_NTSC |
|
|
VIDEO_ENCODER_SECAM | VIDEO_ENCODER_CCIR;
|
|
cap->inputs = 1;
|
|
cap->outputs = 1;
|
|
}
|
|
break;
|
|
|
|
case ENCODER_SET_NORM:
|
|
{
|
|
int *iarg = arg;
|
|
|
|
//saa7185_write_block(client, init_common, sizeof(init_common));
|
|
|
|
switch (*iarg) {
|
|
|
|
case VIDEO_MODE_NTSC:
|
|
saa7185_write_block(client, init_ntsc,
|
|
sizeof(init_ntsc));
|
|
break;
|
|
|
|
case VIDEO_MODE_PAL:
|
|
saa7185_write_block(client, init_pal,
|
|
sizeof(init_pal));
|
|
break;
|
|
|
|
case VIDEO_MODE_SECAM:
|
|
default:
|
|
return -EINVAL;
|
|
|
|
}
|
|
encoder->norm = *iarg;
|
|
}
|
|
break;
|
|
|
|
case ENCODER_SET_INPUT:
|
|
{
|
|
int *iarg = arg;
|
|
|
|
/* RJ: *iarg = 0: input is from SA7111
|
|
*iarg = 1: input is from ZR36060 */
|
|
|
|
switch (*iarg) {
|
|
|
|
case 0:
|
|
/* Switch RTCE to 1 */
|
|
saa7185_write(client, 0x61,
|
|
(encoder->reg[0x61] & 0xf7) | 0x08);
|
|
saa7185_write(client, 0x6e, 0x01);
|
|
break;
|
|
|
|
case 1:
|
|
/* Switch RTCE to 0 */
|
|
saa7185_write(client, 0x61,
|
|
(encoder->reg[0x61] & 0xf7) | 0x00);
|
|
/* SW: a slight sync problem... */
|
|
saa7185_write(client, 0x6e, 0x00);
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
|
|
}
|
|
}
|
|
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;
|
|
saa7185_write(client, 0x61,
|
|
(encoder->reg[0x61] & 0xbf) |
|
|
(encoder->enable ? 0x00 : 0x40));
|
|
}
|
|
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_SAA7185 >> 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_saa7185;
|
|
|
|
static int
|
|
saa7185_detect_client (struct i2c_adapter *adapter,
|
|
int address,
|
|
int kind)
|
|
{
|
|
int i;
|
|
struct i2c_client *client;
|
|
struct saa7185 *encoder;
|
|
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"saa7185.c: detecting saa7185 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_saa7185;
|
|
strlcpy(I2C_NAME(client), "saa7185", sizeof(I2C_NAME(client)));
|
|
|
|
encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
|
|
if (encoder == NULL) {
|
|
kfree(client);
|
|
return -ENOMEM;
|
|
}
|
|
encoder->norm = VIDEO_MODE_NTSC;
|
|
encoder->enable = 1;
|
|
i2c_set_clientdata(client, encoder);
|
|
|
|
i = i2c_attach_client(client);
|
|
if (i) {
|
|
kfree(client);
|
|
kfree(encoder);
|
|
return i;
|
|
}
|
|
|
|
i = saa7185_write_block(client, init_common, sizeof(init_common));
|
|
if (i >= 0) {
|
|
i = saa7185_write_block(client, init_ntsc,
|
|
sizeof(init_ntsc));
|
|
}
|
|
if (i < 0) {
|
|
dprintk(1, KERN_ERR "%s_attach: init error %d\n",
|
|
I2C_NAME(client), i);
|
|
} else {
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"%s_attach: chip version %d at address 0x%x\n",
|
|
I2C_NAME(client), saa7185_read(client) >> 5,
|
|
client->addr << 1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int
|
|
saa7185_attach_adapter (struct i2c_adapter *adapter)
|
|
{
|
|
dprintk(1,
|
|
KERN_INFO
|
|
"saa7185.c: starting probe for adapter %s (0x%x)\n",
|
|
I2C_NAME(adapter), adapter->id);
|
|
return i2c_probe(adapter, &addr_data, &saa7185_detect_client);
|
|
}
|
|
|
|
static int
|
|
saa7185_detach_client (struct i2c_client *client)
|
|
{
|
|
struct saa7185 *encoder = i2c_get_clientdata(client);
|
|
int err;
|
|
|
|
err = i2c_detach_client(client);
|
|
if (err) {
|
|
return err;
|
|
}
|
|
|
|
saa7185_write(client, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */
|
|
//saa7185_write(client, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
|
|
|
|
kfree(encoder);
|
|
kfree(client);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static struct i2c_driver i2c_driver_saa7185 = {
|
|
.driver = {
|
|
.name = "saa7185", /* name */
|
|
},
|
|
|
|
.id = I2C_DRIVERID_SAA7185B,
|
|
|
|
.attach_adapter = saa7185_attach_adapter,
|
|
.detach_client = saa7185_detach_client,
|
|
.command = saa7185_command,
|
|
};
|
|
|
|
static int __init
|
|
saa7185_init (void)
|
|
{
|
|
return i2c_add_driver(&i2c_driver_saa7185);
|
|
}
|
|
|
|
static void __exit
|
|
saa7185_exit (void)
|
|
{
|
|
i2c_del_driver(&i2c_driver_saa7185);
|
|
}
|
|
|
|
module_init(saa7185_init);
|
|
module_exit(saa7185_exit);
|