diff options
| author | Krzysztof Kozlowski | 2014-09-12 08:53:56 +0200 |
|---|---|---|
| committer | Lee Jones | 2014-09-24 15:25:47 +0100 |
| commit | b8f139f68f2099b7f8b4ef470a1e53210e3aa025 (patch) | |
| tree | 416abf92550a7a84f074622a535eee2645b33b09 /include/linux/mfd/max14577.h | |
| parent | 3682a8ee87f9107253e51733f42da10160ce41e3 (diff) | |
regulator/mfd: max14577: Export symbols for calculating charger current
This patch prepares for changing the max14577 charger driver to allow
configuring battery-dependent settings from DTS.
The patch moves from regulator driver to MFD core driver and exports:
- function for calculating register value for charger's current;
- table of limits for chargers (MAX14577, MAX77836).
Previously they were used only by the max14577 regulator driver. In next
patch the charger driver will use them as well. Exporting them will
reduce unnecessary code duplication.
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Acked-by: Mark Brown <broonie@linaro.org>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'include/linux/mfd/max14577.h')
| -rw-r--r-- | include/linux/mfd/max14577.h | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/include/linux/mfd/max14577.h b/include/linux/mfd/max14577.h index c83fbed1c7b6..3c098d57b1d1 100644 --- a/include/linux/mfd/max14577.h +++ b/include/linux/mfd/max14577.h @@ -74,4 +74,27 @@ struct max14577_platform_data { struct max14577_regulator_platform_data *regulators; }; +/* + * Valid limits of current for max14577 and max77836 chargers. + * They must correspond to MBCICHWRCL and MBCICHWRCH fields in CHGCTRL4 + * register for given chipset. + */ +struct maxim_charger_current { + /* Minimal current, set in CHGCTRL4/MBCICHWRCL, uA */ + unsigned int min; + /* + * Minimal current when high setting is active, + * set in CHGCTRL4/MBCICHWRCH, uA + */ + unsigned int high_start; + /* Value of one step in high setting, uA */ + unsigned int high_step; + /* Maximum current of high setting, uA */ + unsigned int max; +}; + +extern const struct maxim_charger_current maxim_charger_currents[]; +extern int maxim_charger_calc_reg_current(const struct maxim_charger_current *limits, + unsigned int min_ua, unsigned int max_ua, u8 *dst); + #endif /* __MAX14577_H__ */ |