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

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- 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: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2008-09-07 07:58:46 -03:00 committed by Mauro Carvalho Chehab
parent b9a21f84bc
commit bba0d98262
1 changed files with 61 additions and 184 deletions
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245
drivers/media/video/adv7175.c
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@ -25,43 +25,24 @@
*/ */
#include <linux/module.h> #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/types.h>
#include <linux/i2c.h> #include <linux/ioctl.h>
#include <asm/io.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/uaccess.h> #include <asm/uaccess.h>
#include <linux/i2c.h>
#include <linux/i2c-id.h>
#include <linux/videodev.h> #include <linux/videodev.h>
#include <linux/video_encoder.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_DESCRIPTION("Analog Devices ADV7175 video encoder driver");
MODULE_AUTHOR("Dave Perks"); MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL"); MODULE_LICENSE("GPL");
#define I2C_NAME(s) (s)->name
static int debug; static int debug;
module_param(debug, int, 0); module_param(debug, int, 0);
MODULE_PARM_DESC(debug, "Debug level (0-1)"); MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
struct adv7175 { struct adv7175 {
@ -77,33 +58,23 @@ struct adv7175 {
#define I2C_ADV7175 0xd4 #define I2C_ADV7175 0xd4
#define I2C_ADV7176 0x54 #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 *inputs[] = { "pass_through", "play_back", "color_bar" };
static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" }; static char *norms[] = { "PAL", "NTSC", "SECAM->PAL (may not work!)" };
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
static inline int static inline int adv7175_write(struct i2c_client *client, u8 reg, u8 value)
adv7175_write (struct i2c_client *client,
u8 reg,
u8 value)
{ {
return i2c_smbus_write_byte_data(client, reg, value); return i2c_smbus_write_byte_data(client, reg, value);
} }
static inline int static inline int adv7175_read(struct i2c_client *client, u8 reg)
adv7175_read (struct i2c_client *client,
u8 reg)
{ {
return i2c_smbus_read_byte_data(client, reg); return i2c_smbus_read_byte_data(client, reg);
} }
static int static int adv7175_write_block(struct i2c_client *client,
adv7175_write_block (struct i2c_client *client, const u8 *data, unsigned int len)
const u8 *data,
unsigned int len)
{ {
int ret = -1; int ret = -1;
u8 reg; u8 reg;
@ -123,18 +94,17 @@ adv7175_write_block (struct i2c_client *client,
reg++; reg++;
len -= 2; len -= 2;
data += 2; data += 2;
} while (len >= 2 && data[0] == reg && } while (len >= 2 && data[0] == reg && block_len < 32);
block_len < 32); ret = i2c_master_send(client, block_data, block_len);
if ((ret = i2c_master_send(client, block_data, if (ret < 0)
block_len)) < 0)
break; break;
} }
} else { } else {
/* do some slow I2C emulation kind of thing */ /* do some slow I2C emulation kind of thing */
while (len >= 2) { while (len >= 2) {
reg = *data++; reg = *data++;
if ((ret = adv7175_write(client, reg, ret = adv7175_write(client, reg, *data++);
*data++)) < 0) if (ret < 0)
break; break;
len -= 2; len -= 2;
} }
@ -143,13 +113,11 @@ adv7175_write_block (struct i2c_client *client,
return ret; return ret;
} }
static void static void set_subcarrier_freq(struct i2c_client *client, int pass_through)
set_subcarrier_freq (struct i2c_client *client,
int pass_through)
{ {
/* for some reason pass_through NTSC needs /* for some reason pass_through NTSC needs
* a different sub-carrier freq to remain stable. */ * a different sub-carrier freq to remain stable. */
if(pass_through) if (pass_through)
adv7175_write(client, 0x02, 0x00); adv7175_write(client, 0x02, 0x00);
else else
adv7175_write(client, 0x02, 0x55); 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 MR050 0x11 /* 0x09 */
#define MR060 0x14 //0x0c #define MR060 0x14 /* 0x0c */
//--------------------------------------------------------------------------- /* ----------------------------------------------------------------------- */
#define TR0MODE 0x46 #define TR0MODE 0x46
#define TR0RST 0x80 #define TR0RST 0x80
@ -216,15 +184,11 @@ static const unsigned char init_ntsc[] = {
0x06, 0x1a, /* subc. phase */ 0x06, 0x1a, /* subc. phase */
}; };
static int static int adv7175_command(struct i2c_client *client, unsigned cmd, void *arg)
adv7175_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
{ {
struct adv7175 *encoder = i2c_get_clientdata(client); struct adv7175 *encoder = i2c_get_clientdata(client);
switch (cmd) { switch (cmd) {
case 0: case 0:
/* This is just for testing!!! */ /* This is just for testing!!! */
adv7175_write_block(client, init_common, adv7175_write_block(client, init_common,
@ -242,15 +206,14 @@ adv7175_command (struct i2c_client *client,
VIDEO_ENCODER_SECAM; /* well, hacky */ VIDEO_ENCODER_SECAM; /* well, hacky */
cap->inputs = 2; cap->inputs = 2;
cap->outputs = 1; cap->outputs = 1;
}
break; break;
}
case ENCODER_SET_NORM: case ENCODER_SET_NORM:
{ {
int iarg = *(int *) arg; int iarg = *(int *) arg;
switch (iarg) { switch (iarg) {
case VIDEO_MODE_NTSC: case VIDEO_MODE_NTSC:
adv7175_write_block(client, init_ntsc, adv7175_write_block(client, init_ntsc,
sizeof(init_ntsc)); sizeof(init_ntsc));
@ -284,16 +247,13 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x07, TR0MODE); adv7175_write(client, 0x07, TR0MODE);
break; break;
default: default:
dprintk(1, KERN_ERR "%s: illegal norm: %d\n", v4l_dbg(1, debug, client, "illegal norm: %d\n", iarg);
I2C_NAME(client), iarg);
return -EINVAL; return -EINVAL;
} }
dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), v4l_dbg(1, debug, client, "switched to %s\n", norms[iarg]);
norms[iarg]);
encoder->norm = iarg; encoder->norm = iarg;
}
break; break;
}
case ENCODER_SET_INPUT: case ENCODER_SET_INPUT:
{ {
@ -304,7 +264,6 @@ adv7175_command (struct i2c_client *client,
*iarg = 2: color bar */ *iarg = 2: color bar */
switch (iarg) { switch (iarg) {
case 0: case 0:
adv7175_write(client, 0x01, 0x00); adv7175_write(client, 0x01, 0x00);
@ -331,7 +290,7 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x0d, 0x49); adv7175_write(client, 0x0d, 0x49);
adv7175_write(client, 0x07, TR0MODE | TR0RST); adv7175_write(client, 0x07, TR0MODE | TR0RST);
adv7175_write(client, 0x07, TR0MODE); adv7175_write(client, 0x07, TR0MODE);
//udelay(10); /* udelay(10); */
break; break;
case 2: case 2:
@ -343,39 +302,35 @@ adv7175_command (struct i2c_client *client,
adv7175_write(client, 0x0d, 0x49); adv7175_write(client, 0x0d, 0x49);
adv7175_write(client, 0x07, TR0MODE | TR0RST); adv7175_write(client, 0x07, TR0MODE | TR0RST);
adv7175_write(client, 0x07, TR0MODE); adv7175_write(client, 0x07, TR0MODE);
//udelay(10); /* udelay(10); */
break; break;
default: default:
dprintk(1, KERN_ERR "%s: illegal input: %d\n", v4l_dbg(1, debug, client, "illegal input: %d\n", iarg);
I2C_NAME(client), iarg);
return -EINVAL; return -EINVAL;
} }
dprintk(1, KERN_INFO "%s: switched to %s\n", I2C_NAME(client), v4l_dbg(1, debug, client, "switched to %s\n", inputs[iarg]);
inputs[iarg]);
encoder->input = iarg; encoder->input = iarg;
}
break; break;
}
case ENCODER_SET_OUTPUT: case ENCODER_SET_OUTPUT:
{ {
int *iarg = arg; int *iarg = arg;
/* not much choice of outputs */ /* not much choice of outputs */
if (*iarg != 0) { if (*iarg != 0)
return -EINVAL; return -EINVAL;
}
}
break; break;
}
case ENCODER_ENABLE_OUTPUT: case ENCODER_ENABLE_OUTPUT:
{ {
int *iarg = arg; int *iarg = arg;
encoder->enable = !!*iarg; encoder->enable = !!*iarg;
}
break; break;
}
default: default:
return -EINVAL; return -EINVAL;
@ -390,145 +345,67 @@ adv7175_command (struct i2c_client *client,
* Generic i2c probe * Generic i2c probe
* concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1'
*/ */
static unsigned short normal_i2c[] = static unsigned short normal_i2c[] = {
{ I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1, I2C_ADV7175 >> 1, (I2C_ADV7175 >> 1) + 1,
I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1, I2C_ADV7176 >> 1, (I2C_ADV7176 >> 1) + 1,
I2C_CLIENT_END I2C_CLIENT_END
}; };
static unsigned short ignore = I2C_CLIENT_END; I2C_CLIENT_INSMOD;
static struct i2c_client_address_data addr_data = { static int adv7175_probe(struct i2c_client *client,
.normal_i2c = normal_i2c, const struct i2c_device_id *id)
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_adv7175;
static int
adv7175_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
{ {
int i; int i;
struct i2c_client *client;
struct adv7175 *encoder; 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 */ /* Check if the adapter supports the needed features */
if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
return 0; return -ENODEV;
client = kzalloc(sizeof(struct i2c_client), GFP_KERNEL); v4l_info(client, "chip found @ 0x%x (%s)\n",
if (!client) client->addr << 1, client->adapter->name);
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)));
encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL); encoder = kzalloc(sizeof(struct adv7175), GFP_KERNEL);
if (encoder == NULL) { if (encoder == NULL)
kfree(client);
return -ENOMEM; return -ENOMEM;
}
encoder->norm = VIDEO_MODE_PAL; encoder->norm = VIDEO_MODE_PAL;
encoder->input = 0; encoder->input = 0;
encoder->enable = 1; encoder->enable = 1;
i2c_set_clientdata(client, encoder); 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)); i = adv7175_write_block(client, init_common, sizeof(init_common));
if (i >= 0) { if (i >= 0) {
i = adv7175_write(client, 0x07, TR0MODE | TR0RST); i = adv7175_write(client, 0x07, TR0MODE | TR0RST);
i = adv7175_write(client, 0x07, TR0MODE); i = adv7175_write(client, 0x07, TR0MODE);
i = adv7175_read(client, 0x12); i = adv7175_read(client, 0x12);
dprintk(1, KERN_INFO "%s_attach: rev. %d at 0x%x\n", v4l_dbg(1, debug, client, "revision %d\n", i & 1);
I2C_NAME(client), i & 1, client->addr << 1);
} }
if (i < 0) { if (i < 0)
dprintk(1, KERN_ERR "%s_attach: init error 0x%x\n", v4l_dbg(1, debug, client, "init error 0x%x\n", i);
I2C_NAME(client), i);
}
return 0; return 0;
} }
static int static int adv7175_remove(struct i2c_client *client)
adv7175_attach_adapter (struct i2c_adapter *adapter)
{ {
dprintk(1, kfree(i2c_get_clientdata(client));
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)
{
struct adv7175 *encoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(encoder);
kfree(client);
return 0; return 0;
} }
/* ----------------------------------------------------------------------- */ /* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_adv7175 = { static const struct i2c_device_id adv7175_id[] = {
.driver = { { "adv7175", 0 },
.name = "adv7175", /* name */ { "adv7176", 0 },
}, { }
.id = I2C_DRIVERID_ADV7175,
.attach_adapter = adv7175_attach_adapter,
.detach_client = adv7175_detach_client,
.command = adv7175_command,
}; };
MODULE_DEVICE_TABLE(i2c, adv7175_id);
static int __init static struct v4l2_i2c_driver_data v4l2_i2c_data = {
adv7175_init (void) .name = "adv7175",
{ .driverid = I2C_DRIVERID_ADV7175,
return i2c_add_driver(&i2c_driver_adv7175); .command = adv7175_command,
} .probe = adv7175_probe,
.remove = adv7175_remove,
static void __exit .id_table = adv7175_id,
adv7175_exit (void) };
{
i2c_del_driver(&i2c_driver_adv7175);
}
module_init(adv7175_init);
module_exit(adv7175_exit);