mirror of https://gitee.com/openkylin/linux.git
389 lines
10 KiB
C
389 lines
10 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/types.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/ioctl.h>
|
|
#include <asm/uaccess.h>
|
|
#include <linux/i2c.h>
|
|
#include <linux/videodev2.h>
|
|
#include <media/v4l2-device.h>
|
|
#include <media/v4l2-chip-ident.h>
|
|
|
|
MODULE_DESCRIPTION("Philips SAA7185 video encoder driver");
|
|
MODULE_AUTHOR("Dave Perks");
|
|
MODULE_LICENSE("GPL");
|
|
|
|
static int debug;
|
|
module_param(debug, int, 0);
|
|
MODULE_PARM_DESC(debug, "Debug level (0-1)");
|
|
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
struct saa7185 {
|
|
struct v4l2_subdev sd;
|
|
unsigned char reg[128];
|
|
|
|
v4l2_std_id norm;
|
|
};
|
|
|
|
static inline struct saa7185 *to_saa7185(struct v4l2_subdev *sd)
|
|
{
|
|
return container_of(sd, struct saa7185, sd);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static inline int saa7185_read(struct v4l2_subdev *sd)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return i2c_smbus_read_byte(client);
|
|
}
|
|
|
|
static int saa7185_write(struct v4l2_subdev *sd, u8 reg, u8 value)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
|
|
v4l2_dbg(1, debug, sd, "%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 v4l2_subdev *sd,
|
|
const u8 *data, unsigned int len)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
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++] =
|
|
encoder->reg[reg++] = data[1];
|
|
len -= 2;
|
|
data += 2;
|
|
} while (len >= 2 && data[0] == reg && block_len < 32);
|
|
ret = i2c_master_send(client, block_data, block_len);
|
|
if (ret < 0)
|
|
break;
|
|
}
|
|
} else {
|
|
/* do some slow I2C emulation kind of thing */
|
|
while (len >= 2) {
|
|
reg = *data++;
|
|
ret = saa7185_write(sd, reg, *data++);
|
|
if (ret < 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_init(struct v4l2_subdev *sd, u32 val)
|
|
{
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
|
|
saa7185_write_block(sd, init_common, sizeof(init_common));
|
|
if (encoder->norm & V4L2_STD_NTSC)
|
|
saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
|
|
else
|
|
saa7185_write_block(sd, init_pal, sizeof(init_pal));
|
|
return 0;
|
|
}
|
|
|
|
static int saa7185_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
|
|
{
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
|
|
if (std & V4L2_STD_NTSC)
|
|
saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
|
|
else if (std & V4L2_STD_PAL)
|
|
saa7185_write_block(sd, init_pal, sizeof(init_pal));
|
|
else
|
|
return -EINVAL;
|
|
encoder->norm = std;
|
|
return 0;
|
|
}
|
|
|
|
static int saa7185_s_routing(struct v4l2_subdev *sd,
|
|
u32 input, u32 output, u32 config)
|
|
{
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
|
|
/* RJ: input = 0: input is from SA7111
|
|
input = 1: input is from ZR36060 */
|
|
|
|
switch (input) {
|
|
case 0:
|
|
/* turn off colorbar */
|
|
saa7185_write(sd, 0x3a, 0x0f);
|
|
/* Switch RTCE to 1 */
|
|
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
|
|
saa7185_write(sd, 0x6e, 0x01);
|
|
break;
|
|
|
|
case 1:
|
|
/* turn off colorbar */
|
|
saa7185_write(sd, 0x3a, 0x0f);
|
|
/* Switch RTCE to 0 */
|
|
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x00);
|
|
/* SW: a slight sync problem... */
|
|
saa7185_write(sd, 0x6e, 0x00);
|
|
break;
|
|
|
|
case 2:
|
|
/* turn on colorbar */
|
|
saa7185_write(sd, 0x3a, 0x8f);
|
|
/* Switch RTCE to 0 */
|
|
saa7185_write(sd, 0x61, (encoder->reg[0x61] & 0xf7) | 0x08);
|
|
/* SW: a slight sync problem... */
|
|
saa7185_write(sd, 0x6e, 0x01);
|
|
break;
|
|
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int saa7185_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
|
|
{
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
|
|
|
return v4l2_chip_ident_i2c_client(client, chip, V4L2_IDENT_SAA7185, 0);
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct v4l2_subdev_core_ops saa7185_core_ops = {
|
|
.g_chip_ident = saa7185_g_chip_ident,
|
|
.init = saa7185_init,
|
|
};
|
|
|
|
static const struct v4l2_subdev_video_ops saa7185_video_ops = {
|
|
.s_std_output = saa7185_s_std_output,
|
|
.s_routing = saa7185_s_routing,
|
|
};
|
|
|
|
static const struct v4l2_subdev_ops saa7185_ops = {
|
|
.core = &saa7185_core_ops,
|
|
.video = &saa7185_video_ops,
|
|
};
|
|
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static int saa7185_probe(struct i2c_client *client,
|
|
const struct i2c_device_id *id)
|
|
{
|
|
int i;
|
|
struct saa7185 *encoder;
|
|
struct v4l2_subdev *sd;
|
|
|
|
/* Check if the adapter supports the needed features */
|
|
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
|
|
return -ENODEV;
|
|
|
|
v4l_info(client, "chip found @ 0x%x (%s)\n",
|
|
client->addr << 1, client->adapter->name);
|
|
|
|
encoder = kzalloc(sizeof(struct saa7185), GFP_KERNEL);
|
|
if (encoder == NULL)
|
|
return -ENOMEM;
|
|
encoder->norm = V4L2_STD_NTSC;
|
|
sd = &encoder->sd;
|
|
v4l2_i2c_subdev_init(sd, client, &saa7185_ops);
|
|
|
|
i = saa7185_write_block(sd, init_common, sizeof(init_common));
|
|
if (i >= 0)
|
|
i = saa7185_write_block(sd, init_ntsc, sizeof(init_ntsc));
|
|
if (i < 0)
|
|
v4l2_dbg(1, debug, sd, "init error %d\n", i);
|
|
else
|
|
v4l2_dbg(1, debug, sd, "revision 0x%x\n",
|
|
saa7185_read(sd) >> 5);
|
|
return 0;
|
|
}
|
|
|
|
static int saa7185_remove(struct i2c_client *client)
|
|
{
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
|
struct saa7185 *encoder = to_saa7185(sd);
|
|
|
|
v4l2_device_unregister_subdev(sd);
|
|
/* SW: output off is active */
|
|
saa7185_write(sd, 0x61, (encoder->reg[0x61]) | 0x40);
|
|
kfree(encoder);
|
|
return 0;
|
|
}
|
|
|
|
/* ----------------------------------------------------------------------- */
|
|
|
|
static const struct i2c_device_id saa7185_id[] = {
|
|
{ "saa7185", 0 },
|
|
{ }
|
|
};
|
|
MODULE_DEVICE_TABLE(i2c, saa7185_id);
|
|
|
|
static struct i2c_driver saa7185_driver = {
|
|
.driver = {
|
|
.owner = THIS_MODULE,
|
|
.name = "saa7185",
|
|
},
|
|
.probe = saa7185_probe,
|
|
.remove = saa7185_remove,
|
|
.id_table = saa7185_id,
|
|
};
|
|
|
|
static __init int init_saa7185(void)
|
|
{
|
|
return i2c_add_driver(&saa7185_driver);
|
|
}
|
|
|
|
static __exit void exit_saa7185(void)
|
|
{
|
|
i2c_del_driver(&saa7185_driver);
|
|
}
|
|
|
|
module_init(init_saa7185);
|
|
module_exit(exit_saa7185);
|