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ieee1394: pcilynx: I2C cleanups 

* Delete optional and empty i2c client_register and client_unregister
  callbacks.
* Use the proper i2c adapter ID.
* Don't use a template to initialize the i2c_adapter structure, it's
  inefficient.
* Update a misleading comment on why we use i2c_transfer rather than
  higher level i2c functions.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
This commit is contained in:
Jean Delvare 2007-09-08 14:09:19 +02:00 committed by Stefan Richter
parent 69e2b60296
commit 745647e7a2
1 changed files with 5 additions and 21 deletions
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26
drivers/ieee1394/pcilynx.c
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@ -121,16 +121,6 @@ static int bit_getsda(void *data)
return reg_read((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL) & 0x00000010; return reg_read((struct ti_lynx *) data, SERIAL_EEPROM_CONTROL) & 0x00000010;
} }
static int bit_reg(struct i2c_client *client)
{
return 0;
}
static int bit_unreg(struct i2c_client *client)
{
return 0;
}
static struct i2c_algo_bit_data bit_data = { static struct i2c_algo_bit_data bit_data = {
.setsda = bit_setsda, .setsda = bit_setsda,
.setscl = bit_setscl, .setscl = bit_setscl,
@ -140,14 +130,6 @@ static struct i2c_algo_bit_data bit_data = {
.timeout = 100, .timeout = 100,
}; };
static struct i2c_adapter bit_ops = {
.id = 0xAA, //FIXME: probably we should get an id in i2c-id.h
.client_register = bit_reg,
.client_unregister = bit_unreg,
.name = "PCILynx I2C",
};
/* /*
* PCL handling functions. * PCL handling functions.
@ -1435,9 +1417,11 @@ static int __devinit add_card(struct pci_dev *dev,
struct i2c_algo_bit_data i2c_adapter_data; struct i2c_algo_bit_data i2c_adapter_data;
error = -ENOMEM; error = -ENOMEM;
i2c_ad = kmemdup(&bit_ops, sizeof(*i2c_ad), GFP_KERNEL); i2c_ad = kzalloc(sizeof(*i2c_ad), GFP_KERNEL);
if (!i2c_ad) FAIL("failed to allocate I2C adapter memory"); if (!i2c_ad) FAIL("failed to allocate I2C adapter memory");
i2c_ad->id = I2C_HW_B_PCILYNX;
strlcpy(i2c_ad->name, "PCILynx I2C", sizeof(i2c_ad->name));
i2c_adapter_data = bit_data; i2c_adapter_data = bit_data;
i2c_ad->algo_data = &i2c_adapter_data; i2c_ad->algo_data = &i2c_adapter_data;
i2c_adapter_data.data = lynx; i2c_adapter_data.data = lynx;
@ -1464,8 +1448,8 @@ static int __devinit add_card(struct pci_dev *dev,
{ 0x50, I2C_M_RD, 20, (unsigned char*) lynx->bus_info_block } { 0x50, I2C_M_RD, 20, (unsigned char*) lynx->bus_info_block }
}; };
/* we use i2c_transfer, because i2c_smbus_read_block_data does not work properly and we /* we use i2c_transfer because we have no i2c_client
do it more efficiently in one transaction rather then using several reads */ at hand */
if (i2c_transfer(i2c_ad, msg, 2) < 0) { if (i2c_transfer(i2c_ad, msg, 2) < 0) {
PRINT(KERN_ERR, lynx->id, "unable to read bus info block from i2c"); PRINT(KERN_ERR, lynx->id, "unable to read bus info block from i2c");
} else { } else {