451 lines
11 KiB
C
451 lines
11 KiB
C
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
||
|
|
/*
|
||
|
|
* 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)
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/module.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/ioctl.h>
|
||
|
|
#include <linux/uaccess.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/videodev2.h>
|
||
|
|
#include <media/v4l2-device.h>
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
|
||
|
|
MODULE_AUTHOR("Dave Perks");
|
||
|
|
MODULE_LICENSE("GPL");
|
||
|
|
|
||
|
|
#define I2C_ADV7175 0xd4
|
||
|
|
#define I2C_ADV7176 0x54
|
||
|
|
|
||
|
|
|
||
|
|
static int debug;
|
||
|
|
module_param(debug, int, 0);
|
||
|
|
MODULE_PARM_DESC(debug, "Debug level (0-1)");
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
struct adv7175 {
|
||
|
|
struct v4l2_subdev sd;
|
||
|
|
v4l2_std_id norm;
|
||
|
|
int input;
|
||
|
|
};
|
||
|
|
|
||
|
|
static inline struct adv7175 *to_adv7175(struct v4l2_subdev *sd)
|
||
|
|
{
|
||
|
|
return container_of(sd, struct adv7175, sd);
|
||
|
|
}
|
||
|
|
|
||
|
|
static char *inputs[] = { "pass_through", "play_back", "color_bar" };
|
||
|
|
|
||
|
|
static u32 adv7175_codes[] = {
|
||
|
|
MEDIA_BUS_FMT_UYVY8_2X8,
|
||
|
|
MEDIA_BUS_FMT_UYVY8_1X16,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
static inline int adv7175_write(struct v4l2_subdev *sd, u8 reg, u8 value)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
||
|
|
|
||
|
|
return i2c_smbus_write_byte_data(client, reg, value);
|
||
|
|
}
|
||
|
|
|
||
|
|
static inline int adv7175_read(struct v4l2_subdev *sd, u8 reg)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = v4l2_get_subdevdata(sd);
|
||
|
|
|
||
|
|
return i2c_smbus_read_byte_data(client, reg);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_write_block(struct v4l2_subdev *sd,
|
||
|
|
const u8 *data, unsigned int len)
|
||
|
|
{
|
||
|
|
struct i2c_client *client = v4l2_get_subdevdata(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++] = data[1];
|
||
|
|
reg++;
|
||
|
|
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 = adv7175_write(sd, reg, *data++);
|
||
|
|
if (ret < 0)
|
||
|
|
break;
|
||
|
|
len -= 2;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void set_subcarrier_freq(struct v4l2_subdev *sd, int pass_through)
|
||
|
|
{
|
||
|
|
/* for some reason pass_through NTSC needs
|
||
|
|
* a different sub-carrier freq to remain stable. */
|
||
|
|
if (pass_through)
|
||
|
|
adv7175_write(sd, 0x02, 0x00);
|
||
|
|
else
|
||
|
|
adv7175_write(sd, 0x02, 0x55);
|
||
|
|
|
||
|
|
adv7175_write(sd, 0x03, 0x55);
|
||
|
|
adv7175_write(sd, 0x04, 0x55);
|
||
|
|
adv7175_write(sd, 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_init(struct v4l2_subdev *sd, u32 val)
|
||
|
|
{
|
||
|
|
/* This is just for testing!!! */
|
||
|
|
adv7175_write_block(sd, init_common, sizeof(init_common));
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_s_std_output(struct v4l2_subdev *sd, v4l2_std_id std)
|
||
|
|
{
|
||
|
|
struct adv7175 *encoder = to_adv7175(sd);
|
||
|
|
|
||
|
|
if (std & V4L2_STD_NTSC) {
|
||
|
|
adv7175_write_block(sd, init_ntsc, sizeof(init_ntsc));
|
||
|
|
if (encoder->input == 0)
|
||
|
|
adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
} else if (std & V4L2_STD_PAL) {
|
||
|
|
adv7175_write_block(sd, init_pal, sizeof(init_pal));
|
||
|
|
if (encoder->input == 0)
|
||
|
|
adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
} else if (std & V4L2_STD_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 synchronized with horizontal
|
||
|
|
* quency) */
|
||
|
|
adv7175_write_block(sd, init_pal, sizeof(init_pal));
|
||
|
|
if (encoder->input == 0)
|
||
|
|
adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
} else {
|
||
|
|
v4l2_dbg(1, debug, sd, "illegal norm: %llx\n",
|
||
|
|
(unsigned long long)std);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
v4l2_dbg(1, debug, sd, "switched to %llx\n", (unsigned long long)std);
|
||
|
|
encoder->norm = std;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_s_routing(struct v4l2_subdev *sd,
|
||
|
|
u32 input, u32 output, u32 config)
|
||
|
|
{
|
||
|
|
struct adv7175 *encoder = to_adv7175(sd);
|
||
|
|
|
||
|
|
/* RJ: input = 0: input is from decoder
|
||
|
|
input = 1: input is from ZR36060
|
||
|
|
input = 2: color bar */
|
||
|
|
|
||
|
|
switch (input) {
|
||
|
|
case 0:
|
||
|
|
adv7175_write(sd, 0x01, 0x00);
|
||
|
|
|
||
|
|
if (encoder->norm & V4L2_STD_NTSC)
|
||
|
|
set_subcarrier_freq(sd, 1);
|
||
|
|
|
||
|
|
adv7175_write(sd, 0x0c, TR1CAPT); /* TR1 */
|
||
|
|
if (encoder->norm & V4L2_STD_SECAM)
|
||
|
|
adv7175_write(sd, 0x0d, 0x49); /* Disable genlock */
|
||
|
|
else
|
||
|
|
adv7175_write(sd, 0x0d, 0x4f); /* Enable genlock */
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
/*udelay(10);*/
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 1:
|
||
|
|
adv7175_write(sd, 0x01, 0x00);
|
||
|
|
|
||
|
|
if (encoder->norm & V4L2_STD_NTSC)
|
||
|
|
set_subcarrier_freq(sd, 0);
|
||
|
|
|
||
|
|
adv7175_write(sd, 0x0c, TR1PLAY); /* TR1 */
|
||
|
|
adv7175_write(sd, 0x0d, 0x49);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
/* udelay(10); */
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 2:
|
||
|
|
adv7175_write(sd, 0x01, 0x80);
|
||
|
|
|
||
|
|
if (encoder->norm & V4L2_STD_NTSC)
|
||
|
|
set_subcarrier_freq(sd, 0);
|
||
|
|
|
||
|
|
adv7175_write(sd, 0x0d, 0x49);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
/* udelay(10); */
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
v4l2_dbg(1, debug, sd, "illegal input: %d\n", input);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
v4l2_dbg(1, debug, sd, "switched to %s\n", inputs[input]);
|
||
|
|
encoder->input = input;
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_enum_mbus_code(struct v4l2_subdev *sd,
|
||
|
|
struct v4l2_subdev_state *sd_state,
|
||
|
|
struct v4l2_subdev_mbus_code_enum *code)
|
||
|
|
{
|
||
|
|
if (code->pad || code->index >= ARRAY_SIZE(adv7175_codes))
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
code->code = adv7175_codes[code->index];
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_get_fmt(struct v4l2_subdev *sd,
|
||
|
|
struct v4l2_subdev_state *sd_state,
|
||
|
|
struct v4l2_subdev_format *format)
|
||
|
|
{
|
||
|
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
||
|
|
u8 val = adv7175_read(sd, 0x7);
|
||
|
|
|
||
|
|
if (format->pad)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
if ((val & 0x40) == (1 << 6))
|
||
|
|
mf->code = MEDIA_BUS_FMT_UYVY8_1X16;
|
||
|
|
else
|
||
|
|
mf->code = MEDIA_BUS_FMT_UYVY8_2X8;
|
||
|
|
|
||
|
|
mf->colorspace = V4L2_COLORSPACE_SMPTE170M;
|
||
|
|
mf->width = 0;
|
||
|
|
mf->height = 0;
|
||
|
|
mf->field = V4L2_FIELD_ANY;
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_set_fmt(struct v4l2_subdev *sd,
|
||
|
|
struct v4l2_subdev_state *sd_state,
|
||
|
|
struct v4l2_subdev_format *format)
|
||
|
|
{
|
||
|
|
struct v4l2_mbus_framefmt *mf = &format->format;
|
||
|
|
u8 val = adv7175_read(sd, 0x7);
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
if (format->pad)
|
||
|
|
return -EINVAL;
|
||
|
|
|
||
|
|
switch (mf->code) {
|
||
|
|
case MEDIA_BUS_FMT_UYVY8_2X8:
|
||
|
|
val &= ~0x40;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case MEDIA_BUS_FMT_UYVY8_1X16:
|
||
|
|
val |= 0x40;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
v4l2_dbg(1, debug, sd,
|
||
|
|
"illegal v4l2_mbus_framefmt code: %d\n", mf->code);
|
||
|
|
return -EINVAL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (format->which == V4L2_SUBDEV_FORMAT_ACTIVE)
|
||
|
|
ret = adv7175_write(sd, 0x7, val);
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int adv7175_s_power(struct v4l2_subdev *sd, int on)
|
||
|
|
{
|
||
|
|
if (on)
|
||
|
|
adv7175_write(sd, 0x01, 0x00);
|
||
|
|
else
|
||
|
|
adv7175_write(sd, 0x01, 0x78);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
static const struct v4l2_subdev_core_ops adv7175_core_ops = {
|
||
|
|
.init = adv7175_init,
|
||
|
|
.s_power = adv7175_s_power,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct v4l2_subdev_video_ops adv7175_video_ops = {
|
||
|
|
.s_std_output = adv7175_s_std_output,
|
||
|
|
.s_routing = adv7175_s_routing,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct v4l2_subdev_pad_ops adv7175_pad_ops = {
|
||
|
|
.enum_mbus_code = adv7175_enum_mbus_code,
|
||
|
|
.get_fmt = adv7175_get_fmt,
|
||
|
|
.set_fmt = adv7175_set_fmt,
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct v4l2_subdev_ops adv7175_ops = {
|
||
|
|
.core = &adv7175_core_ops,
|
||
|
|
.video = &adv7175_video_ops,
|
||
|
|
.pad = &adv7175_pad_ops,
|
||
|
|
};
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
static int adv7175_probe(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
struct adv7175 *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 = devm_kzalloc(&client->dev, sizeof(*encoder), GFP_KERNEL);
|
||
|
|
if (encoder == NULL)
|
||
|
|
return -ENOMEM;
|
||
|
|
sd = &encoder->sd;
|
||
|
|
v4l2_i2c_subdev_init(sd, client, &adv7175_ops);
|
||
|
|
encoder->norm = V4L2_STD_NTSC;
|
||
|
|
encoder->input = 0;
|
||
|
|
|
||
|
|
i = adv7175_write_block(sd, init_common, sizeof(init_common));
|
||
|
|
if (i >= 0) {
|
||
|
|
i = adv7175_write(sd, 0x07, TR0MODE | TR0RST);
|
||
|
|
i = adv7175_write(sd, 0x07, TR0MODE);
|
||
|
|
i = adv7175_read(sd, 0x12);
|
||
|
|
v4l2_dbg(1, debug, sd, "revision %d\n", i & 1);
|
||
|
|
}
|
||
|
|
if (i < 0)
|
||
|
|
v4l2_dbg(1, debug, sd, "init error 0x%x\n", i);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void adv7175_remove(struct i2c_client *client)
|
||
|
|
{
|
||
|
|
struct v4l2_subdev *sd = i2c_get_clientdata(client);
|
||
|
|
|
||
|
|
v4l2_device_unregister_subdev(sd);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* ----------------------------------------------------------------------- */
|
||
|
|
|
||
|
|
static const struct i2c_device_id adv7175_id[] = {
|
||
|
|
{ "adv7175", 0 },
|
||
|
|
{ "adv7176", 0 },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(i2c, adv7175_id);
|
||
|
|
|
||
|
|
static struct i2c_driver adv7175_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "adv7175",
|
||
|
|
},
|
||
|
|
.probe_new = adv7175_probe,
|
||
|
|
.remove = adv7175_remove,
|
||
|
|
.id_table = adv7175_id,
|
||
|
|
};
|
||
|
|
|
||
|
|
module_i2c_driver(adv7175_driver);
|