diff options
| author | Liam Breck <kernel@networkimprov.net> | 2017-08-28 14:23:48 -0700 |
|---|---|---|
| committer | Sebastian Reichel <sre@kernel.org> | 2017-08-29 23:08:39 +0200 |
| commit | 8412a5bea72a787a170d5cc6902d0b8e8514c010 (patch) | |
| tree | 04bf07cd1616c6f1ed9b636838f37d42ffd902fe /drivers/power | |
| parent | a4c7590b8dc44919574fd316db89423197584350 (diff) | |
| download | linux-8412a5bea72a787a170d5cc6902d0b8e8514c010.tar.bz2 | |
power: supply: bq24190_charger: Add property system-minimum-microvolt
Set minimum system voltage limit obtained from device property.
Cc: Hans de Goede <hdegoede@redhat.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Liam Breck <kernel@networkimprov.net>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'drivers/power')
| -rw-r--r-- | drivers/power/supply/bq24190_charger.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/power/supply/bq24190_charger.c b/drivers/power/supply/bq24190_charger.c index 6e651fe2743f..a12d263aea8a 100644 --- a/drivers/power/supply/bq24190_charger.c +++ b/drivers/power/supply/bq24190_charger.c @@ -43,6 +43,8 @@ #define BQ24190_REG_POC_CHG_CONFIG_OTG 0x2 #define BQ24190_REG_POC_SYS_MIN_MASK (BIT(3) | BIT(2) | BIT(1)) #define BQ24190_REG_POC_SYS_MIN_SHIFT 1 +#define BQ24190_REG_POC_SYS_MIN_MIN 3000 +#define BQ24190_REG_POC_SYS_MIN_MAX 3700 #define BQ24190_REG_POC_BOOST_LIM_MASK BIT(0) #define BQ24190_REG_POC_BOOST_LIM_SHIFT 0 @@ -159,6 +161,7 @@ struct bq24190_dev_info { char model_name[I2C_NAME_SIZE]; bool initialized; bool irq_event; + u16 sys_min; struct mutex f_reg_lock; u8 f_reg; u8 ss_reg; @@ -530,6 +533,16 @@ static int bq24190_set_config(struct bq24190_dev_info *bdi) if (ret < 0) return ret; + if (bdi->sys_min) { + v = bdi->sys_min / 100 - 30; // manual section 9.5.1.2, table 9 + ret = bq24190_write_mask(bdi, BQ24190_REG_POC, + BQ24190_REG_POC_SYS_MIN_MASK, + BQ24190_REG_POC_SYS_MIN_SHIFT, + v); + if (ret < 0) + return ret; + } + return 0; } @@ -1509,6 +1522,18 @@ static int bq24190_hw_init(struct bq24190_dev_info *bdi) static int bq24190_get_config(struct bq24190_dev_info *bdi) { + const char * const s = "ti,system-minimum-microvolt"; + int v; + + if (device_property_read_u32(bdi->dev, s, &v) == 0) { + v /= 1000; + if (v >= BQ24190_REG_POC_SYS_MIN_MIN + && v <= BQ24190_REG_POC_SYS_MIN_MAX) + bdi->sys_min = v; + else + dev_warn(bdi->dev, "invalid value for %s: %u\n", s, v); + } + return 0; } |