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i2c-stub: Expose the default functionality flags

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It is easier to adjust the flags when you know their default value.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
This commit is contained in:
Jean Delvare 2010-05-21 18:40:56 +02:00
parent e624dbd324
commit c5aa69285c
1 changed files with 5 additions and 4 deletions
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9
drivers/i2c/busses/i2c-stub.c
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@ -29,13 +29,16 @@
#include <linux/i2c.h>
#define MAX_CHIPS 10
#define STUB_FUNC (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | \
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | \
I2C_FUNC_SMBUS_I2C_BLOCK)
static unsigned short chip_addr[MAX_CHIPS];
module_param_array(chip_addr, ushort, NULL, S_IRUGO);
MODULE_PARM_DESC(chip_addr,
"Chip addresses (up to 10, between 0x03 and 0x77)");
static unsigned long functionality = ~0UL;
static unsigned long functionality = STUB_FUNC;
module_param(functionality, ulong, S_IRUGO | S_IWUSR);
MODULE_PARM_DESC(functionality, "Override functionality bitfield");
@ -156,9 +159,7 @@ static s32 stub_xfer(struct i2c_adapter * adap, u16 addr, unsigned short flags,
static u32 stub_func(struct i2c_adapter *adapter)
{
return (I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
I2C_FUNC_SMBUS_I2C_BLOCK) & functionality;
return STUB_FUNC & functionality;
}
static const struct i2c_algorithm smbus_algorithm = {