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mfd: Refactor ab8500 GPADC API, add raw access

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Refactor the GPADC interface to avoid bugs in calling code:

- ab8500_gpadc_[convert|read_raw|ad_to_voltage] clarifies
  each functions use case, *convert wraps *read_raw, and we
  can access raw ADC values properly.
- Renamed gpadc function arguments from "input" to "channel" to
  clarify use, so we don't get confused again.

Signed-off-by: Kalle Komierowski <kalle.komierowski@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Reviewed-by: John Beckett <john.beckett@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Karl Komierowski
2011-08-10 15:09:43 +02:00
committed by Samuel Ortiz
parent 981c65a9b3
commit bd4a40b57b
2 changed files with 47 additions and 14 deletions
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include/linux/mfd/ab8500/gpadc.h
+4 -1
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@@ -27,6 +27,9 @@
struct ab8500_gpadc;
struct ab8500_gpadc *ab8500_gpadc_get(char *name);
int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 input);
int ab8500_gpadc_convert(struct ab8500_gpadc *gpadc, u8 channel);
int ab8500_gpadc_read_raw(struct ab8500_gpadc *gpadc, u8 channel);
int ab8500_gpadc_ad_to_voltage(struct ab8500_gpadc *gpadc,
u8 channel, int ad_value);
#endif /* _AB8500_GPADC_H */