Skip to content

L
linux
Commit bba0d982 authored by Hans Verkuil's avatar Hans Verkuil Committed by Mauro Carvalho Chehab
Browse files
Options

V4L/DVB (9199): adv7175: convert i2c driver for new i2c API 

- Convert to use v4l2-i2c-drv-legacy.h to be able to handle the new i2c API
- Cleanups
- Use v4l_dbg/v4l_info to have uniform kernel messages
Signed-off-by: default avatarHans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@redhat.com>
parent b9a21f84
Show whitespace changes
Inline Side-by-side
Showing with 60 additions and 183 deletions
drivers/media/video/adv7175.c
View file @ bba0d982
......@@ -25,43 +25,24 @@
*/
#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 <linux/types.h>
#include <linux/i2c.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <linux/ioctl.h>
#include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h>
#include <linux/video_encoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL");
#define I2C_NAME(s) (s)->name
static int debug;
module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */
struct adv7175 {
......@@ -77,33 +58,23 @@ struct adv7175 {
#define I2C_ADV7175 0xd4
#define I2C_ADV7176 0x54
static char adv7175_name[] = "adv7175";
static char adv7176_name[] = "adv7176";
static char *inputs[] = { "pass_through", "play_back", "color_bar" };
static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
/* ----------------------------------------------------------------------- */
static inline int
adv7175_write (struct i2c_client *client,
u8 reg,
u8 value)
static inline int adv7175_write(struct i2c_client *client, u8 reg, u8 value)
{
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline int
adv7175_read (struct i2c_client *client,
u8 reg)
static inline int adv7175_read(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
static int
adv7175_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
static int adv7175_write_block(struct i2c_client *client,
const u8 *data, unsigned int len)
{
int ret = -1;
u8 reg;
......@@ -123,18 +94,17 @@ adv7175_write_block (struct i2c_client *client,
reg++;
len -= 2;
data += 2;
} while (len >= 2 && data[0] == reg &&
block_len < 32);
if ((ret = i2c_master_send(client, block_data,
block_len)) < 0)
} 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++;
if ((ret = adv7175_write(client, reg,
*data++)) < 0)
ret = adv7175_write(client, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
......@@ -143,13 +113,11 @@ adv7175_write_block (struct i2c_client *client,
return ret;
}
static void
set_subcarrier_freq (struct i2c_client *client,
int pass_through)
static void set_subcarrier_freq(struct i2c_client *client, int pass_through)
{
/* for some reason pass_through NTSC needs
* a different sub-carrier freq to remain stable. */
if(pass_through)
if (pass_through)
adv7175_write(client, 0x02, 0x00);
else
adv7175_write(client, 0x02, 0x55);
......@@ -160,12 +128,12 @@ set_subcarrier_freq (struct i2c_client *client,
}
/* ----------------------------------------------------------------------- */
// Output filter: S-Video Composite
/* Output filter: S-Video Composite */
#define MR050 0x11 //0x09
#define MR060 0x14 //0x0c
#define MR050 0x11 /* 0x09 */
#define MR060 0x14 /* 0x0c */
//---------------------------------------------------------------------------
/* ----------------------------------------------------------------------- */
#define TR0MODE 0x46
#define TR0RST 0x80
......@@ -216,15 +184,11 @@ static const unsigned char init_ntsc[] = {
0x06, 0x1a, /* subc. phase */
};
static int
adv7175_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
static int adv7175_command(struct i2c_client *client, unsigned cmd, void *arg)
{
struct adv7175 *encoder = i2c_get_clientdata(client);
switch (cmd) {
case 0:
/* This is just for testing!!! */
adv7175_write_block(client, init_common,
......@@ -242,15 +206,14 @@ adv7175_command (struct i2c_client *client,
VIDEO_ENCODER_SECAM; /* well, hacky */
cap->inputs = 2;
cap->outputs = 1;
}
break;
}
case ENCODER_SET_NORM:
{
int iarg = *(int *) arg;
switch (iarg) {
case VIDEO_MODE_NTSC:
adv7175_write_block(client, init_ntsc,
sizeof(init_ntsc));
......@@ -284,16 +247,13 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x07, TR0MODE);
break;
default:
dprintk(1, KERN_ERR "%s: illegal norm: %d\n",
I2C_NAME(client), iarg);
v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);
return -EINVAL;
}
dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
norms[iarg]);
v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);
encoder->norm = iarg;
}
break;
}
case ENCODER_SET_INPUT:
{
......@@ -304,7 +264,6 @@ adv7175_command (struct i2c_client *client,
*iarg = 2: color bar */
switch (iarg) {
case 0:
adv7175_write(client, 0x01, 0x00);
......@@ -331,7 +290,7 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x0d, 0x49);
adv7175_write(client, 0x07, TR0MODE | TR0RST);
adv7175_write(client, 0x07, TR0MODE);
//udelay(10);
/* udelay(10); */
break;
case 2:
......@@ -343,39 +302,35 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x0d, 0x49);
adv7175_write(client, 0x07, TR0MODE | TR0RST);
adv7175_write(client, 0x07, TR0MODE);
//udelay(10);
/* udelay(10); */
break;
default:
dprintk(1, KERN_ERR "%s: illegal input: %d\n",
I2C_NAME(client), iarg);
v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);
return -EINVAL;
}
dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client),
inputs[iarg]);
v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);
encoder->input = iarg;
}
break;
}
case ENCODER_SET_OUTPUT:
{
int *iarg = arg;
/* not much choice of outputs */
if (*iarg != 0) {
if (*iarg != 0)
return -EINVAL;
}
}
break;
}
case ENCODER_ENABLE_OUTPUT:
{
int *iarg = arg;
encoder->enable = !!*iarg;
}
break;
}
default:
return -EINVAL;
......@@ -390,145 +345,67 @@ adv7175_command (struct i2c_client *client,
* Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/
static unsigned short normal_i2c[] =
{ I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
static unsigned short normal_i2c[] = {
I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
I2C_CLIENT_END
};
static unsigned short ignore = I2C_CLIENT_END;
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_i2c,
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_adv7175;
I2C_CLIENT_INSMOD;
static int
adv7175_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
static int adv7175_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int i;
struct i2c_client *client;
struct adv7175 *encoder;
char *dname;
dprintk(1,
KERN_INFO
"adv7175.c: detecting adv7175 client on address 0x%x\n",
address << 1);
/* Check if the adapter supports the needed features */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0;
if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return -ENODEV;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL);
if (!client)
return -ENOMEM;
client->addr = address;
client->adapter = adapter;
client->driver = &i2c_driver_adv7175;
if ((client->addr == I2C_ADV7175 >> 1) ||
(client->addr == (I2C_ADV7175 >> 1) + 1)) {
dname = adv7175_name;
} else if ((client->addr == I2C_ADV7176 >> 1) ||
(client->addr == (I2C_ADV7176 >> 1) + 1)) {
dname = adv7176_name;
} else {
/* We should never get here!!! */
kfree(client);
return 0;
}
strlcpy(I2C_NAME(client), dname, sizeof(I2C_NAME(client)));
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
if (encoder == NULL) {
kfree(client);
if (encoder == NULL)
return -ENOMEM;
}
encoder->norm = VIDEO_MODE_PAL;
encoder->input = 0;
encoder->enable = 1;
i2c_set_clientdata(client, encoder);
i = i2c_attach_client(client);
if (i) {
kfree(client);
kfree(encoder);
return i;
}
i = adv7175_write_block(client, init_common, sizeof(init_common));
if (i >= 0) {
i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
i = adv7175_write(client, 0x07, TR0MODE);
i = adv7175_read(client, 0x12);
dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n",
I2C_NAME(client), i & 1, client->addr << 1);
v4l_dbg(1, debug, client, "revision %d\n", i & 1);
}
if (i < 0) {
dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n",
I2C_NAME(client), i);
}
if (i < 0)
v4l_dbg(1, debug, client, "init error 0x%x\n", i);
return 0;
}
static int
adv7175_attach_adapter (struct i2c_adapter *adapter)
{
dprintk(1,
KERN_INFO
"adv7175.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &adv7175_detect_client);
}
static int
adv7175_detach_client (struct i2c_client *client)
static int adv7175_remove(struct i2c_client *client)
{
struct adv7175 *encoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(encoder);
kfree(client);
kfree(i2c_get_clientdata(client));
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_adv7175 = {
.driver = {
.name = "adv7175", /* name */
},
.id = I2C_DRIVERID_ADV7175,
static const struct i2c_device_id adv7175_id[] = {
{ "adv7175", 0 },
{ "adv7176", 0 },
{ }
};
MODULE_DEVICE_TABLE(i2c, adv7175_id);
.attach_adapter = adv7175_attach_adapter,
.detach_client = adv7175_detach_client,
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "adv7175",
.driverid = I2C_DRIVERID_ADV7175,
.command = adv7175_command,
.probe = adv7175_probe,
.remove = adv7175_remove,
.id_table = adv7175_id,
};
static int __init
adv7175_init (void)
{
return i2c_add_driver(&i2c_driver_adv7175);
}
static void __exit
adv7175_exit (void)
{
i2c_del_driver(&i2c_driver_adv7175);
}
module_init(adv7175_init);
module_exit(adv7175_exit);
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7