Hello, I have a system where I need to change the "PWM invert" bit (bit 4) in the PWM configuration register (offset 0x5C). The description of this configuration bit from the data sheet: This bit inverts the PWM output. The default is 0, which corresponds to a logic high output for 100% duty cycle. Setting this bit to 1 inverts the PWM output, so 100% duty cycle corresponds to a logic low output. I noticed the adt7475.c driver does not expose this bit in sysfs. Before hacking away I am curious to know why this configuration bit is not exposed already. Some reasons I could think of: - expect the power on default to be correct - expect some other software (boot loader or BIOS) has already set it - just never needed it If it was just never needed then I am proposing to add 3 read/write files to sysfs: pwm1_invert pwm2_invert pwm3_invert The values of 0 and 1 would have the same meaning as the "PWM invert" bit (bit 4) in the PWM configuration register (offset 0x5C). Any other value would be treated as -EINVAL. Cheers, Curt _______________________________________________ lm-sensors mailing list lm-sensors@xxxxxxxxxxxxxx http://lists.lm-sensors.org/mailman/listinfo/lm-sensors
