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i2c-stub: Allow user to disable some commands

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Add a module parameter to override the functionality bitfield. This
lets the user disable some commands. This can be used to force a chip
driver to take different code paths.

Signed-off-by: Jean Delvare <[email protected]>
This commit is contained in:
Jean Delvare 2009-12-06 17:06:29 +01:00
commit 38f41f282f
2 changed files with 12 additions and 2 deletions
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6
Documentation/i2c/i2c-stub
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@ -33,6 +33,12 @@ PARAMETERS:
int chip_addr[10]:
The SMBus addresses to emulate chips at.
unsigned long functionality:
Functionality override, to disable some commands. See I2C_FUNC_*
constants in <linux/i2c.h> for the suitable values. For example,
value 0x1f0000 would only enable the quick, byte and byte data
commands.
CAVEATS:
If your target driver polls some byte or word waiting for it to change, the