[i2c] How the lm-sensors communicate with the device driver

Jean Delvare khali at linux-fr.org
Tue Oct 21 13:14:49 CEST 2008


Hi Vincent,

On Tue, 21 Oct 2008 18:31:07 +0800, Hu Mingkai-B21284 wrote:
> I wrote a MCP3021's driver using the new I2C device model under Linux
> 2.6.26.
> The chip MCP3021 is connected to Freescale's I2C controller.
> Now it works well, the following is the log info:
>  
> -sh-2.05b# ls /sys/bus/i2c/drivers/mcp3021/
> 0-004d  1-004d  bind  module  uevent  unbind
> -sh-2.05b#
>  
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/name
> mcp3021
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/in0_input
> 213
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/in0_max
> 213
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/in0_min
> 192 
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/curr1_input
> 960
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/curr1_max
> 1065
> -sh-2.05b# cat /sys/bus/i2c/drivers/mcp3021/0-004d/curr1_min
> 945
>  
> -sh-2.05b# sensors
> mcp3021-i2c-0-4d
> 
> Adapter: MPC adapter
> in0:         +0.21 V  (min =  +0.19 V, max =  +0.22 V)
>  
> mcp3021-i2c-1-4d
> Adapter: MPC adapter
> in0:         +0.41 V  (min =  +0.41 V, max =  +0.41 V)
> 
> Q:
> 1. How the lm-sensors communicate with the device driver? 
> 2. How the lm-sensors get the attribute info?
> 2. Why the current info, i.e. curr1_x, doesn't list ?

Wrong mailing list. Questions about lm-sensors go to the lm-sensors
mailing list:
http://lists.lm-sensors.org/mailman/listinfo/lm-sensors

-- 
Jean Delvare



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