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linux/drivers/media/i2c/saa7110.c
Sakari Ailus bcb63314e2 [media] media: Drop FSF's postal address from the source code files 
Drop the FSF's postal address from the source code files that typically
contain mostly the license text. Of the 628 removed instances, 578 are
outdated.

The patch has been created with the following command without manual edits:

git grep -l "675 Mass Ave\|59 Temple Place\|51 Franklin St" -- \
	drivers/media/ include/media|while read i; do i=$i perl -e '
open(F,"< $ENV{i}");
$a=join("", <F>);
$a =~ s/[ \t]*\*\n.*You should.*\n.*along with.*\n.*(\n.*USA.*$)?\n//m
	&& $a =~ s/(^.*)Or, (point your browser to) /$1To obtain the license, $2\n$1/m;
close(F);
open(F, "> $ENV{i}");
print F $a;
close(F);'; done

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
2017-01-27 11:38:09 -02:00

468 lines
13 KiB
C
Raw Blame History

/*
* saa7110 - Philips SAA7110(A) video decoder driver
*
* Copyright (C) 1998 Pauline Middelink <middelin@polyware.nl>
*
* 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 (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.
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/slab.h>
#include <linux/wait.h>
#include <linux/uaccess.h>
#include <linux/i2c.h>
#include <linux/videodev2.h>
#include <media/v4l2-device.h>
#include <media/v4l2-ctrls.h>
MODULE_DESCRIPTION("Philips SAA7110 video decoder driver");
MODULE_AUTHOR("Pauline Middelink");
MODULE_LICENSE("GPL");
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define SAA7110_MAX_INPUT 9 /* 6 CVBS, 3 SVHS */
#define SAA7110_MAX_OUTPUT 1 /* 1 YUV */
#define SAA7110_NR_REG 0x35
struct saa7110 {
struct v4l2_subdev sd;
struct v4l2_ctrl_handler hdl;
u8 reg[SAA7110_NR_REG];
v4l2_std_id norm;
int input;
int enable;
wait_queue_head_t wq;
};
static inline struct saa7110 *to_saa7110(struct v4l2_subdev *sd)
{
return container_of(sd, struct saa7110, sd);
}
static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
{
return &container_of(ctrl->handler, struct saa7110, hdl)->sd;
}
/* ----------------------------------------------------------------------- */
/* I2C support functions */
/* ----------------------------------------------------------------------- */
static int saa7110_write(struct v4l2_subdev *sd, u8 reg, u8 value)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct saa7110 *decoder = to_saa7110(sd);
decoder->reg[reg] = value;
return i2c_smbus_write_byte_data(client, reg, value);
}
static int saa7110_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
struct saa7110 *decoder = to_saa7110(sd);
int ret = -1;
u8 reg = *data; /* first register to write to */
/* Sanity check */
if (reg + (len - 1) > SAA7110_NR_REG)
return ret;
/* the saa7110 has an autoincrement function, use it if
* the adapter understands raw I2C */
if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
ret = i2c_master_send(client, data, len);
/* Cache the written data */
memcpy(decoder->reg + reg, data + 1, len - 1);
} else {
for (++data, --len; len; len--) {
ret = saa7110_write(sd, reg++, *data++);
if (ret < 0)
break;
}
}
return ret;
}
static inline int saa7110_read(struct v4l2_subdev *sd)
{
struct i2c_client *client = v4l2_get_subdevdata(sd);
return i2c_smbus_read_byte(client);
}
/* ----------------------------------------------------------------------- */
/* SAA7110 functions */
/* ----------------------------------------------------------------------- */
#define FRESP_06H_COMPST 0x03 /*0x13*/
#define FRESP_06H_SVIDEO 0x83 /*0xC0*/
static int saa7110_selmux(struct v4l2_subdev *sd, int chan)
{
static const unsigned char modes[9][8] = {
/* mode 0 */
{FRESP_06H_COMPST, 0xD9, 0x17, 0x40, 0x03,
0x44, 0x75, 0x16},
/* mode 1 */
{FRESP_06H_COMPST, 0xD8, 0x17, 0x40, 0x03,
0x44, 0x75, 0x16},
/* mode 2 */
{FRESP_06H_COMPST, 0xBA, 0x07, 0x91, 0x03,
0x60, 0xB5, 0x05},
/* mode 3 */
{FRESP_06H_COMPST, 0xB8, 0x07, 0x91, 0x03,
0x60, 0xB5, 0x05},
/* mode 4 */
{FRESP_06H_COMPST, 0x7C, 0x07, 0xD2, 0x83,
0x60, 0xB5, 0x03},
/* mode 5 */
{FRESP_06H_COMPST, 0x78, 0x07, 0xD2, 0x83,
0x60, 0xB5, 0x03},
/* mode 6 */
{FRESP_06H_SVIDEO, 0x59, 0x17, 0x42, 0xA3,
0x44, 0x75, 0x12},
/* mode 7 */
{FRESP_06H_SVIDEO, 0x9A, 0x17, 0xB1, 0x13,
0x60, 0xB5, 0x14},
/* mode 8 */
{FRESP_06H_SVIDEO, 0x3C, 0x27, 0xC1, 0x23,
0x44, 0x75, 0x21}
};
struct saa7110 *decoder = to_saa7110(sd);
const unsigned char *ptr = modes[chan];
saa7110_write(sd, 0x06, ptr[0]); /* Luminance control */
saa7110_write(sd, 0x20, ptr[1]); /* Analog Control #1 */
saa7110_write(sd, 0x21, ptr[2]); /* Analog Control #2 */
saa7110_write(sd, 0x22, ptr[3]); /* Mixer Control #1 */
saa7110_write(sd, 0x2C, ptr[4]); /* Mixer Control #2 */
saa7110_write(sd, 0x30, ptr[5]); /* ADCs gain control */
saa7110_write(sd, 0x31, ptr[6]); /* Mixer Control #3 */
saa7110_write(sd, 0x21, ptr[7]); /* Analog Control #2 */
decoder->input = chan;
return 0;
}
static const unsigned char initseq[1 + SAA7110_NR_REG] = {
0, 0x4C, 0x3C, 0x0D, 0xEF, 0xBD, 0xF2, 0x03, 0x00,
/* 0x08 */ 0xF8, 0xF8, 0x60, 0x60, 0x00, 0x86, 0x18, 0x90,
/* 0x10 */ 0x00, 0x59, 0x40, 0x46, 0x42, 0x1A, 0xFF, 0xDA,
/* 0x18 */ 0xF2, 0x8B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
/* 0x20 */ 0xD9, 0x16, 0x40, 0x41, 0x80, 0x41, 0x80, 0x4F,
/* 0x28 */ 0xFE, 0x01, 0xCF, 0x0F, 0x03, 0x01, 0x03, 0x0C,
/* 0x30 */ 0x44, 0x71, 0x02, 0x8C, 0x02
};
static v4l2_std_id determine_norm(struct v4l2_subdev *sd)
{
DEFINE_WAIT(wait);
struct saa7110 *decoder = to_saa7110(sd);
int status;
/* mode changed, start automatic detection */
saa7110_write_block(sd, initseq, sizeof(initseq));
saa7110_selmux(sd, decoder->input);
prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(250));
finish_wait(&decoder->wq, &wait);
status = saa7110_read(sd);
if (status & 0x40) {
v4l2_dbg(1, debug, sd, "status=0x%02x (no signal)\n", status);
return V4L2_STD_UNKNOWN;
}
if ((status & 3) == 0) {
saa7110_write(sd, 0x06, 0x83);
if (status & 0x20) {
v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC/no color)\n", status);
/*saa7110_write(sd,0x2E,0x81);*/
return V4L2_STD_NTSC;
}
v4l2_dbg(1, debug, sd, "status=0x%02x (PAL/no color)\n", status);
/*saa7110_write(sd,0x2E,0x9A);*/
return V4L2_STD_PAL;
}
/*saa7110_write(sd,0x06,0x03);*/
if (status & 0x20) { /* 60Hz */
v4l2_dbg(1, debug, sd, "status=0x%02x (NTSC)\n", status);
saa7110_write(sd, 0x0D, 0x86);
saa7110_write(sd, 0x0F, 0x50);
saa7110_write(sd, 0x11, 0x2C);
/*saa7110_write(sd,0x2E,0x81);*/
return V4L2_STD_NTSC;
}
/* 50Hz -> PAL/SECAM */
saa7110_write(sd, 0x0D, 0x86);
saa7110_write(sd, 0x0F, 0x10);
saa7110_write(sd, 0x11, 0x59);
/*saa7110_write(sd,0x2E,0x9A);*/
prepare_to_wait(&decoder->wq, &wait, TASK_UNINTERRUPTIBLE);
schedule_timeout(msecs_to_jiffies(250));
finish_wait(&decoder->wq, &wait);
status = saa7110_read(sd);
if ((status & 0x03) == 0x01) {
v4l2_dbg(1, debug, sd, "status=0x%02x (SECAM)\n", status);
saa7110_write(sd, 0x0D, 0x87);
return V4L2_STD_SECAM;
}
v4l2_dbg(1, debug, sd, "status=0x%02x (PAL)\n", status);
return V4L2_STD_PAL;
}
static int saa7110_g_input_status(struct v4l2_subdev *sd, u32 *pstatus)
{
struct saa7110 *decoder = to_saa7110(sd);
int res = V4L2_IN_ST_NO_SIGNAL;
int status = saa7110_read(sd);
v4l2_dbg(1, debug, sd, "status=0x%02x norm=%llx\n",
status, (unsigned long long)decoder->norm);
if (!(status & 0x40))
res = 0;
if (!(status & 0x03))
res |= V4L2_IN_ST_NO_COLOR;
*pstatus = res;
return 0;
}
static int saa7110_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
{
*std &= determine_norm(sd);
return 0;
}
static int saa7110_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
{
struct saa7110 *decoder = to_saa7110(sd);
if (decoder->norm != std) {
decoder->norm = std;
/*saa7110_write(sd, 0x06, 0x03);*/
if (std & V4L2_STD_NTSC) {
saa7110_write(sd, 0x0D, 0x86);
saa7110_write(sd, 0x0F, 0x50);
saa7110_write(sd, 0x11, 0x2C);
/*saa7110_write(sd, 0x2E, 0x81);*/
v4l2_dbg(1, debug, sd, "switched to NTSC\n");
} else if (std & V4L2_STD_PAL) {
saa7110_write(sd, 0x0D, 0x86);
saa7110_write(sd, 0x0F, 0x10);
saa7110_write(sd, 0x11, 0x59);
/*saa7110_write(sd, 0x2E, 0x9A);*/
v4l2_dbg(1, debug, sd, "switched to PAL\n");
} else if (std & V4L2_STD_SECAM) {
saa7110_write(sd, 0x0D, 0x87);
saa7110_write(sd, 0x0F, 0x10);
saa7110_write(sd, 0x11, 0x59);
/*saa7110_write(sd, 0x2E, 0x9A);*/
v4l2_dbg(1, debug, sd, "switched to SECAM\n");
} else {
return -EINVAL;
}
}
return 0;
}
static int saa7110_s_routing(struct v4l2_subdev *sd,
u32 input, u32 output, u32 config)
{
struct saa7110 *decoder = to_saa7110(sd);
if (input >= SAA7110_MAX_INPUT) {
v4l2_dbg(1, debug, sd, "input=%d not available\n", input);
return -EINVAL;
}
if (decoder->input != input) {
saa7110_selmux(sd, input);
v4l2_dbg(1, debug, sd, "switched to input=%d\n", input);
}
return 0;
}
static int saa7110_s_stream(struct v4l2_subdev *sd, int enable)
{
struct saa7110 *decoder = to_saa7110(sd);
if (decoder->enable != enable) {
decoder->enable = enable;
saa7110_write(sd, 0x0E, enable ? 0x18 : 0x80);
v4l2_dbg(1, debug, sd, "YUV %s\n", enable ? "on" : "off");
}
return 0;
}
static int saa7110_s_ctrl(struct v4l2_ctrl *ctrl)
{
struct v4l2_subdev *sd = to_sd(ctrl);
switch (ctrl->id) {
case V4L2_CID_BRIGHTNESS:
saa7110_write(sd, 0x19, ctrl->val);
break;
case V4L2_CID_CONTRAST:
saa7110_write(sd, 0x13, ctrl->val);
break;
case V4L2_CID_SATURATION:
saa7110_write(sd, 0x12, ctrl->val);
break;
case V4L2_CID_HUE:
saa7110_write(sd, 0x07, ctrl->val);
break;
default:
return -EINVAL;
}
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct v4l2_ctrl_ops saa7110_ctrl_ops = {
.s_ctrl = saa7110_s_ctrl,
};
static const struct v4l2_subdev_video_ops saa7110_video_ops = {
.s_std = saa7110_s_std,
.s_routing = saa7110_s_routing,
.s_stream = saa7110_s_stream,
.querystd = saa7110_querystd,
.g_input_status = saa7110_g_input_status,
};
static const struct v4l2_subdev_ops saa7110_ops = {
.video = &saa7110_video_ops,
};
/* ----------------------------------------------------------------------- */
static int saa7110_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
struct saa7110 *decoder;
struct v4l2_subdev *sd;
int rv;
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(client->adapter,
I2C_FUNC_SMBUS_READ_BYTE | I2C_FUNC_SMBUS_WRITE_BYTE_DATA))
return -ENODEV;
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
decoder = devm_kzalloc(&client->dev, sizeof(*decoder), GFP_KERNEL);
if (!decoder)
return -ENOMEM;
sd = &decoder->sd;
v4l2_i2c_subdev_init(sd, client, &saa7110_ops);
decoder->norm = V4L2_STD_PAL;
decoder->input = 0;
decoder->enable = 1;
v4l2_ctrl_handler_init(&decoder->hdl, 2);
v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
V4L2_CID_BRIGHTNESS, 0, 255, 1, 128);
v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
V4L2_CID_CONTRAST, 0, 127, 1, 64);
v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
V4L2_CID_SATURATION, 0, 127, 1, 64);
v4l2_ctrl_new_std(&decoder->hdl, &saa7110_ctrl_ops,
V4L2_CID_HUE, -128, 127, 1, 0);
sd->ctrl_handler = &decoder->hdl;
if (decoder->hdl.error) {
int err = decoder->hdl.error;
v4l2_ctrl_handler_free(&decoder->hdl);
return err;
}
v4l2_ctrl_handler_setup(&decoder->hdl);
init_waitqueue_head(&decoder->wq);
rv = saa7110_write_block(sd, initseq, sizeof(initseq));
if (rv < 0) {
v4l2_dbg(1, debug, sd, "init status %d\n", rv);
} else {
int ver, status;
saa7110_write(sd, 0x21, 0x10);
saa7110_write(sd, 0x0e, 0x18);
saa7110_write(sd, 0x0D, 0x04);
ver = saa7110_read(sd);
saa7110_write(sd, 0x0D, 0x06);
/*mdelay(150);*/
status = saa7110_read(sd);
v4l2_dbg(1, debug, sd, "version %x, status=0x%02x\n",
ver, status);
saa7110_write(sd, 0x0D, 0x86);
saa7110_write(sd, 0x0F, 0x10);
saa7110_write(sd, 0x11, 0x59);
/*saa7110_write(sd, 0x2E, 0x9A);*/
}
/*saa7110_selmux(sd,0);*/
/*determine_norm(sd);*/
/* setup and implicit mode 0 select has been performed */
return 0;
}
static int saa7110_remove(struct i2c_client *client)
{
struct v4l2_subdev *sd = i2c_get_clientdata(client);
struct saa7110 *decoder = to_saa7110(sd);
v4l2_device_unregister_subdev(sd);
v4l2_ctrl_handler_free(&decoder->hdl);
return 0;
}
/* ----------------------------------------------------------------------- */
static const struct i2c_device_id saa7110_id[] = {
{ "saa7110", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, saa7110_id);
static struct i2c_driver saa7110_driver = {
.driver = {
.name = "saa7110",
},
.probe = saa7110_probe,
.remove = saa7110_remove,
.id_table = saa7110_id,
};
module_i2c_driver(saa7110_driver);
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