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/*
* saa711x - Philips SAA711x video decoder driver version 0.0.1
*
* To do: Now, it handles only saa7113/7114. Should be improved to
* handle all Philips saa711x devices.
*
* Based on saa7113 driver from Dave Perks <dperks@ibm.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/signal.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/types.h>
#include <asm/uaccess.h>
#include <linux/videodev.h>
MODULE_DESCRIPTION("Philips SAA711x video decoder driver");
MODULE_AUTHOR("Dave Perks, Jose Ignacio Gijon, Joerg Heckenbach, Mark McClelland, Dwaine Garden");
MODULE_LICENSE("GPL");
#include <linux/i2c.h>
#define I2C_NAME(s) (s)->name
#include <linux/video_decoder.h>
static int debug = 0;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, " Set the default Debug level. Default: 0 (Off) - (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */
struct saa711x {
unsigned char reg[32];
int norm;
int input;
int enable;
int bright;
int contrast;
int hue;
int sat;
};
#define I2C_SAA7113 0x4A
#define I2C_SAA7114 0x42
/* ----------------------------------------------------------------------- */
static inline int
saa711x_write (struct i2c_client *client,
u8 reg,
u8 value)
{
struct saa711x *decoder = i2c_get_clientdata(client);
decoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static int
saa711x_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
{
int ret = -1;
u8 reg;
/* the saa711x 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 saa711x *decoder = i2c_get_clientdata(client);
struct i2c_msg msg;
u8 block_data[32];
msg.addr = client->addr;
msg.flags = 0;
while (len >= 2) {
msg.buf = (char *) block_data;
msg.len = 0;
block_data[msg.len++] = reg = data[0];
do {
block_data[msg.len++] =
decoder->reg[reg++] = data[1];
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg &&
msg.len < 32);
if ((ret = i2c_transfer(client->adapter,
&msg, 1)) < 0)
break;
}
} else {
/* do some slow I2C emulation kind of thing */
while (len >= 2) {
reg = *data++;
if ((ret = saa711x_write(client, reg,
*data++)) < 0)
break;
len -= 2;
}
}
return ret;
}
static int
saa711x_init_decoder (struct i2c_client *client,
struct video_decoder_init *init)
{
return saa711x_write_block(client, init->data, init->len);
}
static inline int
saa711x_read (struct i2c_client *client,
u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
/* ----------------------------------------------------------------------- */
static const unsigned char saa711x_i2c_init[] = {
0x00, 0x00, /* PH711x_CHIP_VERSION 00 - ID byte */
0x01, 0x08, /* PH711x_INCREMENT_DELAY - (1) (1) (1) (1) IDEL3 IDEL2 IDELL1 IDEL0 */
0x02, 0xc0, /* PH711x_ANALOG_INPUT_CONTR_1 - FUSE1 FUSE0 GUDL1 GUDL0 MODE3 MODE2 MODE1 MODE0 */
0x03, 0x23, /* PH711x_ANALOG_INPUT_CONTR_2 - (1) HLNRS VBSL WPOFF HOLDG GAFIX GAI28 GAI18 */
0x04, 0x00, /* PH711x_ANALOG_INPUT_CONTR_3 - GAI17 GAI16 GAI15 GAI14 GAI13 GAI12 GAI11 GAI10 */
0x05, 0x00, /* PH711x_ANALOG_INPUT_CONTR_4 - GAI27 GAI26 GAI25 GAI24 GAI23 GAI22 GAI21 GAI20 */
0x06, 0xeb, /* PH711x_HORIZONTAL_SYNC_START - HSB7 HSB6 HSB5 HSB4 HSB3 HSB2 HSB1 HSB0 */
0x07, 0xe0, /* PH711x_HORIZONTAL_SYNC_STOP - HSS7 HSS6 HSS5 HSS4 HSS3 HSS2 HSS1 HSS0 */
0x08, 0x88, /* PH711x_SYNC_CONTROL - AUFD FSEL FOET HTC1 HTC0 HPLL VNOI1 VNOI0 */
0x09, 0x00, /* PH711x_LUMINANCE_CONTROL - BYPS PREF BPSS1 BPSS0 VBLB UPTCV APER1 APER0 */
0x0a, 0x80, /* PH711x_LUMINANCE_BRIGHTNESS - BRIG7 BRIG6 BRIG5 BRIG4 BRIG3 BRIG2 BRIG1 BRIG0 */
0x0b, 0x47, /* PH711x_LUMINANCE_CONTRAST - CONT7 CONT6 CONT5 CONT4 CONT3 CONT2 CONT1 CONT0 */
0x0c, 0x40, /* PH711x_CHROMA_SATURATION - SATN7 SATN6 SATN5 SATN4 SATN3 SATN2 SATN1 SATN0 */
0x0d, 0x00, /* PH711x_CHROMA_HUE_CONTROL - HUEC7 HUEC6 HUEC5 HUEC4 HUEC3 HUEC2 HUEC1 HUEC0 */
0x0e, 0x01, /* PH711x_CHROMA_CONTROL - CDTO CSTD2 CSTD1 CSTD0 DCCF FCTC CHBW1 CHBW0 */
0x0f, 0xaa, /* PH711x_CHROMA_GAIN_CONTROL - ACGC CGAIN6 CGAIN5 CGAIN4 CGAIN3 CGAIN2 CGAIN1 CGAIN0 */
0x10, 0x00, /* PH711x_FORMAT_DELAY_CONTROL - OFTS1 OFTS0 HDEL1 HDEL0 VRLN YDEL2 YDEL1 YDEL0 */
0x11, 0x1C, /* PH711x_OUTPUT_CONTROL_1 - GPSW1 CM99 GPSW0 HLSEL OEYC OERT VIPB COLO */
0x12, 0x01, /* PH711x_OUTPUT_CONTROL_2 - RTSE13 RTSE12 RTSE11 RTSE10 RTSE03 RTSE02 RTSE01 RTSE00 */
0x13, 0x00, /* PH711x_OUTPUT_CONTROL_3 - ADLSB (1) (1) OLDSB FIDP (1) AOSL1 AOSL0 */
0x14, 0x00, /* RESERVED 14 - (1) (1) (1) (1) (1) (1) (1) (1) */
0x15, 0x00, /* PH711x_V_GATE1_START - VSTA7 VSTA6 VSTA5 VSTA4 VSTA3 VSTA2 VSTA1 VSTA0 */
0x16, 0x00, /* PH711x_V_GATE1_STOP - VSTO7 VSTO6 VSTO5 VSTO4 VSTO3 VSTO2 VSTO1 VSTO0 */
0x17, 0x00, /* PH711x_V_GATE1_MSB - (1) (1) (1) (1) (1) (1) VSTO8 VSTA8 */
};
static int
saa711x_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
{
struct saa711x *decoder = i2c_get_clientdata(client);
switch (cmd) {
case 0:
case DECODER_INIT:
{
struct video_decoder_init *init = arg;
if (NULL != init)
return saa711x_init_decoder(client, init);
else {
struct video_decoder_init vdi;
vdi.data = saa711x_i2c_init;
vdi.len = sizeof(saa711x_i2c_init);
return saa711x_init_decoder(client, &vdi);
}
}
case DECODER_DUMP:
{
int i;
for (i = 0; i < 32; i += 16) {
int j;
printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
for (j = 0; j < 16; ++j) {
printk(" %02x",
saa711x_read(client, i + j));
}
printk("\n");
}
}
break;
case DECODER_GET_CAPABILITIES:
{
struct video_decoder_capability *cap = arg;
cap->flags = VIDEO_DECODER_PAL |
VIDEO_DECODER_NTSC |
VIDEO_DECODER_SECAM |
VIDEO_DECODER_AUTO |
VIDEO_DECODER_CCIR;
cap->inputs = 8;
cap->outputs = 1;
}
break;
case DECODER_GET_STATUS:
{
int *iarg = arg;
int status;
int res;
status = saa711x_read(client, 0x1f);
dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
status);
res = 0;
if ((status & (1 <<
|