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[media] cx231xx: use own i2c_client for eeprom access

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This is a preparation for deleting the otherwise useless i2c_clients
that are allocated for all the i2c master adapters.

Signed-off-by: Matthias Schwarzott <zzam@gentoo.org>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Matthias Schwarzott 2014-10-02 02:20:54 -03:00 committed by Mauro Carvalho Chehab
parent 7c894a3b34
commit 9c67289061
1 changed files with 13 additions and 11 deletions
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24
drivers/media/usb/cx231xx/cx231xx-cards.c
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@ -980,23 +980,20 @@ static void cx231xx_config_tuner(struct cx231xx *dev)
}
static int read_eeprom(struct cx231xx *dev, u8 *eedata, int len)
static int read_eeprom(struct cx231xx *dev, struct i2c_client *client,
u8 *eedata, int len)
{
int ret = 0;
u8 addr = 0xa0 >> 1;
u8 start_offset = 0;
int len_todo = len;
u8 *eedata_cur = eedata;
int i;
struct i2c_msg msg_write = { .addr = addr, .flags = 0,
struct i2c_msg msg_write = { .addr = client->addr, .flags = 0,
.buf = &start_offset, .len = 1 };
struct i2c_msg msg_read = { .addr = addr, .flags = I2C_M_RD };
/* mutex_lock(&dev->i2c_lock); */
cx231xx_enable_i2c_port_3(dev, false);
struct i2c_msg msg_read = { .addr = client->addr, .flags = I2C_M_RD };
/* start reading at offset 0 */
ret = i2c_transfer(&dev->i2c_bus[1].i2c_adap, &msg_write, 1);
ret = i2c_transfer(client->adapter, &msg_write, 1);
if (ret < 0) {
cx231xx_err("Can't read eeprom\n");
return ret;
@ -1006,7 +1003,7 @@ static int read_eeprom(struct cx231xx *dev, u8 *eedata, int len)
msg_read.len = (len_todo > 64) ? 64 : len_todo;
msg_read.buf = eedata_cur;
ret = i2c_transfer(&dev->i2c_bus[1].i2c_adap, &msg_read, 1);
ret = i2c_transfer(client->adapter, &msg_read, 1);
if (ret < 0) {
cx231xx_err("Can't read eeprom\n");
return ret;
@ -1062,9 +1059,14 @@ void cx231xx_card_setup(struct cx231xx *dev)
{
struct tveeprom tvee;
static u8 eeprom[256];
struct i2c_client client;
read_eeprom(dev, eeprom, sizeof(eeprom));
tveeprom_hauppauge_analog(&dev->i2c_bus[1].i2c_client,
memset(&client, 0, sizeof(client));
client.adapter = &dev->i2c_bus[1].i2c_adap;
client.addr = 0xa0 >> 1;
read_eeprom(dev, &client, eeprom, sizeof(eeprom));
tveeprom_hauppauge_analog(&client,
&tvee, eeprom + 0xc0);
break;
}