lkml.org 
[lkml]   [2020]   [Apr]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4/4] power: supply: sc27xx: Add boot voltage support
Date
From: Yuanjiang Yu <yuanjiang.yu@unisoc.com>

Add new property to allow to get the voltage measured during boot time.

Signed-off-by: Yuanjiang Yu <yuanjiang.yu@unisoc.com>
Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
---
drivers/power/supply/sc27xx_fuel_gauge.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c
index 82d0c64ef269..be42e814ea34 100644
--- a/drivers/power/supply/sc27xx_fuel_gauge.c
+++ b/drivers/power/supply/sc27xx_fuel_gauge.c
@@ -84,6 +84,7 @@
* @init_clbcnt: the initial coulomb counter
* @max_volt: the maximum constant input voltage in millivolt
* @min_volt: the minimum drained battery voltage in microvolt
+ * @boot_volt: the voltage measured during boot in microvolt
* @table_len: the capacity table length
* @resist_table_len: the resistance table length
* @cur_1000ma_adc: ADC value corresponding to 1000 mA
@@ -109,6 +110,7 @@ struct sc27xx_fgu_data {
int init_clbcnt;
int max_volt;
int min_volt;
+ int boot_volt;
int table_len;
int resist_table_len;
int cur_1000ma_adc;
@@ -321,6 +323,7 @@ static int sc27xx_fgu_get_boot_capacity(struct sc27xx_fgu_data *data, int *cap)

volt = sc27xx_fgu_adc_to_voltage(data, volt);
ocv = volt * 1000 - oci * data->internal_resist;
+ data->boot_volt = ocv;

/*
* Parse the capacity table to look up the correct capacity percent
@@ -680,6 +683,10 @@ static int sc27xx_fgu_get_property(struct power_supply *psy,
val->intval = value * 1000;
break;

+ case POWER_SUPPLY_PROP_VOLTAGE_BOOT:
+ val->intval = data->boot_volt;
+ break;
+
default:
ret = -EINVAL;
break;
@@ -750,6 +757,7 @@ static enum power_supply_property sc27xx_fgu_props[] = {
POWER_SUPPLY_PROP_VOLTAGE_NOW,
POWER_SUPPLY_PROP_VOLTAGE_OCV,
POWER_SUPPLY_PROP_VOLTAGE_AVG,
+ POWER_SUPPLY_PROP_VOLTAGE_BOOT,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_CONSTANT_CHARGE_VOLTAGE,
--
2.17.1
\
 
 \ /
  Last update: 2020-04-20 05:43    [W:0.037 / U:0.512 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site