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power_supply: bq25700: add function to set current

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This patch is used for updating the charger operations such
like setting charging current and setting input current.

Change-Id: I7c77624102dd2b43bd1c007c2097ab92a5e3de2a
Signed-off-by: Shengfei xu <xsf@rock-chips.com>
This commit is contained in:
Shengfei xu 2017-01-03 18:11:33 +08:00 committed by Huang, Tao
parent a637e9e243
commit 090f2de5ac
2 changed files with 50 additions and 1 deletions
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31
drivers/power/bq25700_charger.c
View File

@ -15,6 +15,7 @@
*
*/
#include <linux/power/bq25700-charge.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/mfd/core.h>
@ -375,7 +376,7 @@ static const union {
} bq25700_tables[] = {
/* range tables */
[TBL_ICHG] = { .rt = {0, 8128000, 64000} },
/* uA */
/* uV */
[TBL_CHGMAX] = { .rt = {0, 19200000, 16000} },
/* uV max charge voltage*/
[TBL_INPUTVOL] = { .rt = {3200000, 19520000, 64000} },
@ -425,6 +426,8 @@ static const struct regmap_config bq25700_regmap_config = {
.val_format_endian = REGMAP_ENDIAN_LITTLE,
};
static struct bq25700_device *bq25700_charger;
static int bq25700_field_read(struct bq25700_device *charger,
enum bq25700_fields field_id)
{
@ -623,6 +626,31 @@ static u32 bq25700_find_idx(u32 value, enum bq25700_table_ids id)
return idx - 1;
}
void bq25700_charger_set_current(unsigned long event,
int current_value)
{
int idx;
if (!bq25700_charger) {
pr_err("[%s,%d] bq25700_charger is null\n", __func__, __LINE__);
return;
}
switch (event) {
case CHARGER_CURRENT_EVENT:
idx = bq25700_find_idx(current_value, TBL_ICHG);
bq25700_field_write(bq25700_charger, CHARGE_CURRENT, idx);
break;
case INPUT_CURRENT_EVENT:
idx = bq25700_find_idx(current_value, TBL_INPUTCUR);
bq25700_field_write(bq25700_charger, INPUT_CURRENT, idx);
break;
default:
return;
}
}
static int bq25700_fw_read_u32_props(struct bq25700_device *charger)
{
int ret;
@ -1683,6 +1711,7 @@ static int bq25700_probe(struct i2c_client *client,
goto irq_fail;
bq25700_power_supply_init(charger);
bq25700_charger = charger;
irq_fail:
return ret;

20
include/linux/power/bq25700-charge.h Normal file
View File

@ -0,0 +1,20 @@
/*
* This software is licensed under the terms of the GNU General Public
* License version 2, as published by the Free Software Foundation, and
* may be copied, distributed, and modified under those terms.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#ifndef __CHARGER_BQ25700_H_
#define __CHARGER_BQ25700_H_
#define CHARGER_CURRENT_EVENT 0x01
#define INPUT_CURRENT_EVENT 0x02
void bq25700_charger_set_current(unsigned long event, int current_value);
#endif /* __CHARGER_BQ25700_H_ */