[PATCH] i2c: change the id to let the i2c device work

Jean Delvare khali at linux-fr.org
Fri Oct 12 04:05:21 EDT 2012

On Fri, 12 Oct 2012 15:55:32 +0800, Bo Shen wrote:
> vim I only see the i2c-gpio platform data structure as following:
> --<---------------------
> struct i2c_gpio_platform_data {
> 	unsigned int	sda_pin;
> 	unsigned int	scl_pin;
> 	int		udelay;
> 	int		timeout;
> 	unsigned int	sda_is_open_drain:1;
> 	unsigned int	scl_is_open_drain:1;
> 	unsigned int	scl_is_output_only:1;
> };
> -->---------------------

Ah sorry I misread Mark's request. i2c-gpio will turn the platform
device ID into bus number, it can indeed not be forced through platform
data. But I don't think any other i2c bus driver allows this either. I
don't quite see the problem with setting a platform device ID even if
there's only one instance of the platform device. I have many examples
of this on my machine:
Fixed MDIO bus.0

So please just set the platform device ID to 0 (or whatever i2c adapter
number you want) and your problem is solved. As you just proposed
initially, actually :)

Jean Delvare

More information about the linux-arm-kernel mailing list