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V4L/DVB (9205): saa7111: 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: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Hans Verkuil 2008-09-07 08:00:49 -03:00 committed by Mauro Carvalho Chehab
parent 85ede69fec
commit 4e1a04d900
1 changed files with 59 additions and 167 deletions
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226
drivers/media/video/saa7111.c
View File

@ -28,43 +28,24 @@
*/
#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_decoder.h>
#include <media/v4l2-common.h>
#include <media/v4l2-i2c-drv-legacy.h>
MODULE_DESCRIPTION("Philips SAA7111 video decoder driver");
MODULE_AUTHOR("Dave Perks");
MODULE_LICENSE("GPL");
#define I2C_NAME(s) (s)->name
static int debug;
module_param(debug, int, 0644);
MODULE_PARM_DESC(debug, "Debug level (0-1)");
#define dprintk(num, format, args...) \
do { \
if (debug >= num) \
printk(format, ##args); \
} while (0)
/* ----------------------------------------------------------------------- */
#define SAA7111_NR_REG 0x18
@ -77,14 +58,9 @@ struct saa7111 {
int enable;
};
#define I2C_SAA7111 0x48
/* ----------------------------------------------------------------------- */
static inline int
saa7111_write (struct i2c_client *client,
u8 reg,
u8 value)
static inline int saa7111_write(struct i2c_client *client, u8 reg, u8 value)
{
struct saa7111 *decoder = i2c_get_clientdata(client);
@ -92,8 +68,7 @@ saa7111_write (struct i2c_client *client,
return i2c_smbus_write_byte_data(client, reg, value);
}
static inline void
saa7111_write_if_changed(struct i2c_client *client, u8 reg, u8 value)
static inline void saa7111_write_if_changed(struct i2c_client *client, u8 reg, u8 value)
{
struct saa7111 *decoder = i2c_get_clientdata(client);
@ -103,10 +78,7 @@ saa7111_write_if_changed(struct i2c_client *client, u8 reg, u8 value)
}
}
static int
saa7111_write_block (struct i2c_client *client,
const u8 *data,
unsigned int len)
static int saa7111_write_block(struct i2c_client *client, const u8 *data, unsigned int len)
{
int ret = -1;
u8 reg;
@ -127,18 +99,17 @@ saa7111_write_block (struct i2c_client *client,
decoder->reg[reg++] = data[1];
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 = saa7111_write(client, reg,
*data++)) < 0)
ret = saa7111_write(client, reg, *data++);
if (ret < 0)
break;
len -= 2;
}
@ -147,16 +118,13 @@ saa7111_write_block (struct i2c_client *client,
return ret;
}
static int
saa7111_init_decoder (struct i2c_client *client,
struct video_decoder_init *init)
static int saa7111_init_decoder(struct i2c_client *client,
struct video_decoder_init *init)
{
return saa7111_write_block(client, init->data, init->len);
}
static inline int
saa7111_read (struct i2c_client *client,
u8 reg)
static inline int saa7111_read(struct i2c_client *client, u8 reg)
{
return i2c_smbus_read_byte_data(client, reg);
}
@ -203,28 +171,23 @@ static const unsigned char saa7111_i2c_init[] = {
0x17, 0x00, /* 17 - VBI */
};
static int
saa7111_command (struct i2c_client *client,
unsigned int cmd,
void *arg)
static int saa7111_command(struct i2c_client *client, unsigned cmd, void *arg)
{
struct saa7111 *decoder = i2c_get_clientdata(client);
switch (cmd) {
case 0:
break;
case DECODER_INIT:
{
struct video_decoder_init *init = arg;
struct video_decoder_init vdi;
if (NULL != init)
return saa7111_init_decoder(client, init);
else {
struct video_decoder_init vdi;
vdi.data = saa7111_i2c_init;
vdi.len = sizeof(saa7111_i2c_init);
return saa7111_init_decoder(client, &vdi);
}
vdi.data = saa7111_i2c_init;
vdi.len = sizeof(saa7111_i2c_init);
return saa7111_init_decoder(client, &vdi);
}
case DECODER_DUMP:
@ -234,15 +197,15 @@ saa7111_command (struct i2c_client *client,
for (i = 0; i < SAA7111_NR_REG; i += 16) {
int j;
printk(KERN_DEBUG "%s: %03x", I2C_NAME(client), i);
v4l_info(client, "%03x", i);
for (j = 0; j < 16 && i + j < SAA7111_NR_REG; ++j) {
printk(" %02x",
printk(KERN_CONT " %02x",
saa7111_read(client, i + j));
}
printk("\n");
printk(KERN_CONT "\n");
}
}
break;
}
case DECODER_GET_CAPABILITIES:
{
@ -255,8 +218,8 @@ saa7111_command (struct i2c_client *client,
VIDEO_DECODER_CCIR;
cap->inputs = 8;
cap->outputs = 1;
}
break;
}
case DECODER_GET_STATUS:
{
@ -265,8 +228,7 @@ saa7111_command (struct i2c_client *client,
int res;
status = saa7111_read(client, 0x1f);
dprintk(1, KERN_DEBUG "%s status: 0x%02x\n", I2C_NAME(client),
status);
v4l_dbg(1, debug, client, "status: 0x%02x\n", status);
res = 0;
if ((status & (1 << 6)) == 0) {
res |= DECODER_STATUS_GOOD;
@ -294,8 +256,8 @@ saa7111_command (struct i2c_client *client,
res |= DECODER_STATUS_COLOR;
}
*iarg = res;
}
break;
}
case DECODER_SET_GPIO:
{
@ -362,8 +324,8 @@ saa7111_command (struct i2c_client *client,
}
decoder->norm = *iarg;
}
break;
}
case DECODER_SET_INPUT:
{
@ -387,8 +349,8 @@ saa7111_command (struct i2c_client *client,
3) ? 0x80 :
0));
}
}
break;
}
case DECODER_SET_OUTPUT:
{
@ -398,8 +360,8 @@ saa7111_command (struct i2c_client *client,
if (*iarg != 0) {
return -EINVAL;
}
}
break;
}
case DECODER_ENABLE_OUTPUT:
{
@ -439,8 +401,8 @@ saa7111_command (struct i2c_client *client,
(decoder->reg[0x11] & 0xf3));
}
}
}
break;
}
case DECODER_SET_PICTURE:
{
@ -454,8 +416,8 @@ saa7111_command (struct i2c_client *client,
saa7111_write(client, 0x0c, pic->colour >> 9);
/* We want -128 to 127 we get 0-65535 */
saa7111_write(client, 0x0d, (pic->hue - 32768) >> 8);
}
break;
}
default:
return -EINVAL;
@ -466,48 +428,23 @@ saa7111_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_SAA7111 >> 1, I2C_CLIENT_END };
static unsigned short normal_i2c[] = { 0x48 >> 1, I2C_CLIENT_END };
static unsigned short ignore = I2C_CLIENT_END;
I2C_CLIENT_INSMOD;
static struct i2c_client_address_data addr_data = {
.normal_i2c = normal_i2c,
.probe = &ignore,
.ignore = &ignore,
};
static struct i2c_driver i2c_driver_saa7111;
static int
saa7111_detect_client (struct i2c_adapter *adapter,
int address,
int kind)
static int saa7111_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
int i;
struct i2c_client *client;
struct saa7111 *decoder;
struct video_decoder_init vdi;
dprintk(1,
KERN_INFO
"saa7111.c: detecting saa7111 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_saa7111;
strlcpy(I2C_NAME(client), "saa7111", sizeof(I2C_NAME(client)));
v4l_info(client, "chip found @ 0x%x (%s)\n",
client->addr << 1, client->adapter->name);
decoder = kzalloc(sizeof(struct saa7111), GFP_KERNEL);
if (decoder == NULL) {
@ -519,82 +456,37 @@ saa7111_detect_client (struct i2c_adapter *adapter,
decoder->enable = 1;
i2c_set_clientdata(client, decoder);
i = i2c_attach_client(client);
if (i) {
kfree(client);
kfree(decoder);
return i;
}
vdi.data = saa7111_i2c_init;
vdi.len = sizeof(saa7111_i2c_init);
i = saa7111_init_decoder(client, &vdi);
if (i < 0) {
dprintk(1, KERN_ERR "%s_attach error: init status %d\n",
I2C_NAME(client), i);
v4l_dbg(1, debug, client, "init status %d\n", i);
} else {
dprintk(1,
KERN_INFO
"%s_attach: chip version %x at address 0x%x\n",
I2C_NAME(client), saa7111_read(client, 0x00) >> 4,
client->addr << 1);
v4l_dbg(1, debug, client, "revision %x\n",
saa7111_read(client, 0x00) >> 4);
}
return 0;
}
static int
saa7111_attach_adapter (struct i2c_adapter *adapter)
static int saa7111_remove(struct i2c_client *client)
{
dprintk(1,
KERN_INFO
"saa7111.c: starting probe for adapter %s (0x%x)\n",
I2C_NAME(adapter), adapter->id);
return i2c_probe(adapter, &addr_data, &saa7111_detect_client);
}
static int
saa7111_detach_client (struct i2c_client *client)
{
struct saa7111 *decoder = i2c_get_clientdata(client);
int err;
err = i2c_detach_client(client);
if (err) {
return err;
}
kfree(decoder);
kfree(client);
kfree(i2c_get_clientdata(client));
return 0;
}
/* ----------------------------------------------------------------------- */
static struct i2c_driver i2c_driver_saa7111 = {
.driver = {
.name = "saa7111",
},
.id = I2C_DRIVERID_SAA7111A,
.attach_adapter = saa7111_attach_adapter,
.detach_client = saa7111_detach_client,
.command = saa7111_command,
static const struct i2c_device_id saa7111_id[] = {
{ "saa7111_old", 0 }, /* "saa7111" maps to the saa7115 driver */
{ }
};
MODULE_DEVICE_TABLE(i2c, saa7111_id);
static int __init
saa7111_init (void)
{
return i2c_add_driver(&i2c_driver_saa7111);
}
static void __exit
saa7111_exit (void)
{
i2c_del_driver(&i2c_driver_saa7111);
}
module_init(saa7111_init);
module_exit(saa7111_exit);
static struct v4l2_i2c_driver_data v4l2_i2c_data = {
.name = "saa7111",
.driverid = I2C_DRIVERID_SAA7111A,
.command = saa7111_command,
.probe = saa7111_probe,
.remove = saa7111_remove,
.id_table = saa7111_id,
};