A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-11 07:03:09 -04:00
Code Issues Projects Releases Packages Wiki Activity

regulator: init all wl2864c register when probe driver

Browse source 
Set all register to initial value when probe driver
to avoid register value was modified.

Change-Id: Ib8037ec0f1a270731a3e418f8d323e7197bc5529
Signed-off-by: liuwang2 <liuwang2@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1868314
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Long Cheng <chengl1@motorola.com>
Reviewed-by: Dawei Wang <wangdw10@motorola.com>
Reviewed-by: Zhilong Wang <wangzl30@motorola.com>
Reviewed-by: Jian Zhang <zhangjo@motorola.com>
Reviewed-by: Zhenxin Xi <xizx@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
liuwang2 2021-02-02 17:40:16 +08:00 • committed by Wang Liu
commit 6c96df253f
1 changed files with 23 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

34
drivers/regulator/wl2864c/wl2864c-regulator.c
View file

@ -47,10 +47,7 @@ struct wl2864c_evt_sta {
static const struct wl2864c_evt_sta wl2864c_status_reg = { WL2864C_LDO_EN };
static const struct regmap_range wl2864c_writeable_ranges[] = {
/* Do not let useless register writeable */
regmap_reg_range(WL2864C_CURRENT_LIMITSEL, WL2864C_CURRENT_LIMITSEL),
regmap_reg_range(WL2864C_LDO1_VOUT, WL2864C_LDO7_VOUT),
regmap_reg_range(WL2864C_LDO_EN, WL2864C_LDO_EN),
regmap_reg_range(WL2864C_CURRENT_LIMITSEL, WL2864C_SEQ_STATUS),
};
static const struct regmap_range wl2864c_readable_ranges[] = {
@ -93,6 +90,7 @@ static int wl2864c_get_current_limit(struct regulator_dev *rdev)
unsigned int val = 0;
dev_err(chip->dev, "************ start dump wl2864c register ************\n");
dev_err(chip->dev, "regulator name = %s \n", rdev->desc->name);
dev_err(chip->dev, "register 0x00: chip version\n");
dev_err(chip->dev, "register 0x01: LDO CL\n");
dev_err(chip->dev, "register 0x03~0x09: LDO1~LDO7 OUT Voltage\n");
@ -273,7 +271,19 @@ static int wl2864c_i2c_probe(struct i2c_client *client,
{
struct device *dev = &client->dev;
struct wl2864c *chip;
int error, cs_gpio, ret, current_limit;
int error, cs_gpio, ret, i;
/* Set all register to initial value when probe driver to avoid register value was modified.
*/
const unsigned int initial_register[7][2] = {
{WL2864C_CURRENT_LIMITSEL, 0x40},
{WL2864C_DISCHARGE_RESISTORS, 0x00},
{WL2864C_LDO1_LDO2_SEQ, 0x00},
{WL2864C_LDO3_LDO4_SEQ, 0x00},
{WL2864C_LDO5_LDO6_SEQ, 0x00},
{WL2864C_LDO7_SEQ, 0x00},
{WL2864C_SEQ_STATUS, 0x00},
};
chip = devm_kzalloc(dev, sizeof(struct wl2864c), GFP_KERNEL);
if (!chip) {
@ -315,13 +325,15 @@ static int wl2864c_i2c_probe(struct i2c_client *client,
return error;
}
ret = regmap_bulk_read(chip->regmap, WL2864C_CURRENT_LIMITSEL, &current_limit, 1);
dev_err(chip->dev, "default current limit is 0x%x\n", current_limit);
for (i = 0; i < 7; i++) {
ret = regmap_write(chip->regmap, initial_register[i][0], initial_register[i][1]);
if (ret < 0) {
dev_err(chip->dev,"Failed to write register: 0x%x, value: 0x%x \n",
initial_register[i][0], initial_register[i][1]);
}
current_limit |= 0x40;
ret = regmap_write(chip->regmap, WL2864C_CURRENT_LIMITSEL, current_limit);
if (ret < 0) {
dev_err(chip->dev,"Failed to write current limit register\n");
dev_err(chip->dev,"Success to write register: 0x%x, value: 0x%x \n",
initial_register[i][0], initial_register[i][1]);
}
ret = wl2864c_regulator_init(chip);