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i2c: add i2c_check_quirks helper function 

This patch adds a i2c_check_quirks helper function to check the quirk flags
of an i2c adapter, in a similar way to i2c_check_functionality.

Signed-off-by: Nicola Corna <nicola@corna.info>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
steinar/wifi_calib_4_9_kernel
Nicola Corna 2015-10-29 12:34:26 +01:00 committed by Wolfram Sang
parent 4dbfb5f440
commit cfa576db83
1 changed files with 14 additions and 0 deletions
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14
include/linux/i2c.h
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@ -617,6 +617,20 @@ static inline int i2c_check_functionality(struct i2c_adapter *adap, u32 func)
return (func & i2c_get_functionality(adap)) == func;
}
/**
* i2c_check_quirks() - Function for checking the quirk flags in an i2c adapter
* @adap: i2c adapter
* @quirks: quirk flags
*
* Return: true if the adapter has all the specified quirk flags, false if not
*/
static inline bool i2c_check_quirks(struct i2c_adapter *adap, u64 quirks)
{
if (!adap->quirks)
return false;
return (adap->quirks->flags & quirks) == quirks;
}
/* Return the adapter number for a specific adapter */
static inline int i2c_adapter_id(struct i2c_adapter *adap)
{