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mfd: twl4030-madc: Add support for raw value in twl4030_madc_conversion

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Driver twl4030-madc has hardcoded channel types (10 - battery current,
1 - battery temperature) and also conversation data in variable
twl4030_divider_ratios. These hardcoded channels are incorrect for
Nokia RX-51 board (where is channel 0 - battery temperature).

For Nokia RX-51 there is rx51_battery power_supply driver which reporting
battery information via twl4030_madc_conversion. But this driver needs
raw values (not converted via some hardcoded functions). So this patch
adding new parameter "raw" to struct twl4030_madc_request which tell
twl4030-madc driver to not convert values, but rather return raw.

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Reviewed-by: Anton Vorontsov <anton@enomsg.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Pali Rohár 2013-02-15 23:56:49 +01:00 • committed by Samuel Ortiz
parent d955cba86d
commit a5055d5d68
2 changed files with 12 additions and 4 deletions
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2
include/linux/i2c/twl4030-madc.h
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@ -39,6 +39,7 @@ struct twl4030_madc_conversion_method {
* @do_avgP: sample the input channel for 4 consecutive cycles
* @method: RT, SW1, SW2
* @type: Polling or interrupt based method
* @raw: Return raw value, do not convert it
*/
struct twl4030_madc_request {
@ -48,6 +49,7 @@ struct twl4030_madc_request {
u16 type;
bool active;
bool result_pending;
bool raw;
int rbuf[TWL4030_MADC_MAX_CHANNELS];
void (*func_cb)(int len, int channels, int *buf);
};