diff options
| author | Wadim Egorov <w.egorov@phytec.de> | 2017-06-19 12:36:39 +0200 |
|---|---|---|
| committer | Philipp Tomsich <philipp.tomsich@theobroma-systems.com> | 2017-07-11 15:23:38 +0200 |
| commit | ad98f882e86d3b7231b8c02bbdf8f7eee735aee6 (patch) | |
| tree | 46dec00657901fc02709e039af3d7b74c7d63585 /drivers/power | |
| parent | 8926c2f5841148ba0f1b67bb71314797e45229c2 (diff) | |
power: regulator: rk8xx: Allow input current/charger shutdown configuration
The RK818 PMIC contains a charger. Add very basic charger functionality
to be able to regulate the USB input current and charger shutdown limits.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/regulator/rk8xx.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/power/regulator/rk8xx.c b/drivers/power/regulator/rk8xx.c index d96a1f85e8..7c0a3aaa89 100644 --- a/drivers/power/regulator/rk8xx.c +++ b/drivers/power/regulator/rk8xx.c @@ -30,6 +30,9 @@ #define RK818_LDO_VSEL_MASK 0x1f #define RK818_LDO3_ON_VSEL_MASK 0xf #define RK818_BOOST_ON_VSEL_MASK 0xe0 +#define RK818_USB_ILIM_SEL_MASK 0x0f +#define RK818_USB_CHG_SD_VSEL_MASK 0x70 + struct rk8xx_reg_info { uint min_uv; @@ -76,6 +79,14 @@ static const struct rk8xx_reg_info rk818_ldo[] = { }; #endif +static const u16 rk818_chrg_cur_input_array[] = { + 450, 800, 850, 1000, 1250, 1500, 1750, 2000, 2250, 2500, 2750, 3000 +}; + +static const uint rk818_chrg_shutdown_vsel_array[] = { + 2780000, 2850000, 2920000, 2990000, 3060000, 3130000, 3190000, 3260000 +}; + static const struct rk8xx_reg_info *get_buck_reg(struct udevice *pmic, int num) { @@ -353,3 +364,26 @@ int rk8xx_spl_configure_buck(struct udevice *pmic, int buck, int uvolt) return _buck_set_enable(pmic, buck, true); } + +int rk818_spl_configure_usb_input_current(struct udevice *pmic, int current_ma) +{ + uint i; + + for (i = 0; i < ARRAY_SIZE(rk818_chrg_cur_input_array); i++) + if (current_ma <= rk818_chrg_cur_input_array[i]) + break; + + return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_ILIM_SEL_MASK, i); +} + +int rk818_spl_configure_usb_chrg_shutdown(struct udevice *pmic, int uvolt) +{ + uint i; + + for (i = 0; i < ARRAY_SIZE(rk818_chrg_shutdown_vsel_array); i++) + if (uvolt <= rk818_chrg_shutdown_vsel_array[i]) + break; + + return pmic_clrsetbits(pmic, REG_USB_CTRL, RK818_USB_CHG_SD_VSEL_MASK, + i); +} |