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/*
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>
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 <asm/segment.h>
#include <linux/types.h>
#include <linux/wrapper.h>
#include <linux/videodev.h>
#include <linux/version.h>
#include <asm/uaccess.h>
#include <linux/i2c-old.h>
#include <linux/video_encoder.h>
#define DEBUG(x) /* Debug driver */
/* ----------------------------------------------------------------------- */
struct saa7185 {
struct i2c_bus *bus;
int addr;
unsigned char reg[128];
int norm;
int enable;
int bright;
int contrast;
int hue;
int sat;
};
#define I2C_SAA7185 0x88
#define I2C_DELAY 10
/* ----------------------------------------------------------------------- */
static int saa7185_read(struct saa7185 *dev)
{
int ack;
LOCK_I2C_BUS(dev->bus);
i2c_start(dev->bus);
i2c_sendbyte(dev->bus, dev->addr | 1, I2C_DELAY);
ack = i2c_readbyte(dev->bus, 1);
i2c_stop(dev->bus);
UNLOCK_I2C_BUS(dev->bus);
return ack;
}
static int saa7185_write(struct saa7185 *dev, unsigned char subaddr,
unsigned char data)
{
int ack;
DEBUG(printk
(KERN_DEBUG "SAA7185: %02x set to %02x\n", subaddr, data);
)
LOCK_I2C_BUS(dev->bus);
i2c_start(dev->bus);
i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
i2c_sendbyte(dev->bus, subaddr, I2C_DELAY);
ack = i2c_sendbyte(dev->bus, data, I2C_DELAY);
dev->reg[subaddr] = data;
i2c_stop(dev->bus);
UNLOCK_I2C_BUS(dev->bus);
return ack;
}
static int saa7185_write_block(struct saa7185 *dev,
unsigned const char *data, unsigned int len)
{
int ack = -1;
unsigned subaddr;
while (len > 1) {
LOCK_I2C_BUS(dev->bus);
i2c_start(dev->bus);
i2c_sendbyte(dev->bus, dev->addr, I2C_DELAY);
ack = i2c_sendbyte(dev->bus, (subaddr = *data++), I2C_DELAY);
ack = i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++), I2C_DELAY);
len -= 2;
while (len > 1 && *data == ++subaddr) {
data++;
ack = i2c_sendbyte(dev->bus, (dev->reg[subaddr] = *data++), I2C_DELAY);
len -= 2;
}
i2c_stop(dev->bus);
UNLOCK_I2C_BUS(dev->bus);
}
return ack;
}
/* ----------------------------------------------------------------------- */
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_attach(struct i2c_device *device)
{
int i;
struct saa7185 *encoder;
MOD_INC_USE_COUNT;
device->data = encoder = kmalloc(sizeof(struct saa7185), GFP_KERNEL);
if (encoder == NULL) {
MOD_DEC_USE_COUNT;
return -ENOMEM;
}
memset(encoder, 0, sizeof(struct saa7185));
strcpy(device->name, "saa7185");
encoder->bus = device->bus;
encoder->addr = device->addr;
encoder->norm = VIDEO_MODE_NTSC;
encoder->enable = 1;
i = saa7185_write_block(encoder, init_common, sizeof(init_common));
if (i >= 0) {
i = saa7185_write_block(encoder, init_ntsc,
sizeof(init_ntsc));
}
if (i < 0) {
printk(KERN_ERR "%s_attach: init error %d\n", device->name,
i);
} else {
printk(KERN_INFO "%s_attach: chip version %d\n",
device->name, saa7185_read(encoder) >> 5);
}
return 0;
}
static int saa7185_detach(struct i2c_device *device)
{
struct saa7185 *encoder = device->data;
saa7185_write(encoder, 0x61, (encoder->reg[0x61]) | 0x40); /* SW: output off is active */
//saa7185_write(encoder, 0x3a, (encoder->reg[0x3a]) | 0x80); /* SW: color bar */
kfree(encoder);
MOD_DEC_USE_COUNT;
return 0;
}
static int saa7185_command(struct i2c_device *device, unsigned int cmd,
void *arg)
{
struct saa7185 *encoder = device->data;
switch (cmd) {
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;
switch (*iarg) {
case VIDEO_MODE_NTSC:
saa7185_write_block(encoder, init_ntsc,
sizeof(init_ntsc));
break;
case VIDEO_MODE_PAL:
saa7185_write_block(encoder, 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(encoder, 0x61,
(encoder->
reg[0x61] & 0xf7) | 0x08);
saa7185_write(encoder, 0x6e, 0x01);
break;
case 1:
/* Switch RTCE to 0 */
saa7185_write(encoder, 0x61,
(encoder->
reg[0x61] & 0xf7) | 0x00);
/* SW: a slight sync problem... */
saa7185_write(encoder, 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(encoder, 0x61,
(encoder->
reg[0x61] & 0xbf) | (encoder->
enable ? 0x00 :
0x40));
}
break;
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_saa7185 = {
"saa7185", /* name */
I2C_DRIVERID_VIDEOENCODER, /* ID */
I2C_SAA7185, I2C_SAA7185 + 1,
saa7185_attach,
saa7185_detach,
saa7185_command
};
EXPORT_NO_SYMBOLS;
static int saa7185_init(void)
{
return i2c_register_driver(&i2c_driver_saa7185);
}
static void saa7185_exit(void)
{
i2c_unregister_driver(&i2c_driver_saa7185);
}
module_init(saa7185_init);
module_exit(saa7185_exit);
MODULE_LICENSE("GPL");
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