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power: supply: s3c-adc-battery: Convert to GPIO descriptors

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This converts the S3C ADC battery to use GPIO descriptors
instead of a global GPIO number for the charging completed
GPIO. Using the pattern from the GPIO charger we name this
GPIO line "charge-status" in the board file.

Cc: linux-samsung-soc@vger.kernel.org
Cc: Sergiy Kibrik <sakib@darkstar.site>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Linus Walleij 2020-11-03 00:48:44 +01:00 committed by Sebastian Reichel
parent 36dbca148b
commit 7776bcd241
4 changed files with 49 additions and 34 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
arch/arm/mach-s3c/mach-h1940.c
View File

@ -297,6 +297,15 @@ static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
{ .volt = 3841, .cur = 0, .level = 0},
};
static struct gpiod_lookup_table h1940_bat_gpio_table = {
.dev_id = "s3c-adc-battery",
.table = {
/* Charge status S3C2410_GPF(3) */
GPIO_LOOKUP("GPIOF", 3, "charge-status", GPIO_ACTIVE_LOW),
{ },
},
};
static int h1940_bat_init(void)
{
int ret;
@ -330,8 +339,6 @@ static struct s3c_adc_bat_pdata h1940_bat_cfg = {
.exit = h1940_bat_exit,
.enable_charger = h1940_enable_charger,
.disable_charger = h1940_disable_charger,
.gpio_charge_finished = S3C2410_GPF(3),
.gpio_inverted = 1,
.lut_noac = bat_lut_noac,
.lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
.lut_acin = bat_lut_acin,
@ -720,6 +727,7 @@ static void __init h1940_init(void)
s3c24xx_fb_set_platdata(&h1940_fb_info);
gpiod_add_lookup_table(&h1940_mmc_gpio_table);
gpiod_add_lookup_table(&h1940_audio_gpio_table);
gpiod_add_lookup_table(&h1940_bat_gpio_table);
/* Configure the I2S pins (GPE0...GPE4) in correct mode */
s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);

11
arch/arm/mach-s3c/mach-rx1950.c
View File

@ -206,6 +206,15 @@ static const struct s3c_adc_bat_thresh bat_lut_acin[] = {
{ .volt = 3820, .cur = 0, .level = 0},
};
static struct gpiod_lookup_table rx1950_bat_gpio_table = {
.dev_id = "s3c-adc-battery",
.table = {
/* Charge status S3C2410_GPF(3) */
GPIO_LOOKUP("GPIOF", 3, "charge-status", GPIO_ACTIVE_HIGH),
{ },
},
};
static int rx1950_bat_init(void)
{
int ret;
@ -331,7 +340,6 @@ static struct s3c_adc_bat_pdata rx1950_bat_cfg = {
.exit = rx1950_bat_exit,
.enable_charger = rx1950_enable_charger,
.disable_charger = rx1950_disable_charger,
.gpio_charge_finished = S3C2410_GPF(3),
.lut_noac = bat_lut_noac,
.lut_noac_cnt = ARRAY_SIZE(bat_lut_noac),
.lut_acin = bat_lut_acin,
@ -840,6 +848,7 @@ static void __init rx1950_init_machine(void)
pwm_add_table(rx1950_pwm_lookup, ARRAY_SIZE(rx1950_pwm_lookup));
gpiod_add_lookup_table(&rx1950_audio_gpio_table);
gpiod_add_lookup_table(&rx1950_bat_gpio_table);
/* Configure the I2S pins (GPE0...GPE4) in correct mode */
s3c_gpio_cfgall_range(S3C2410_GPE(0), 5, S3C_GPIO_SFN(2),
S3C_GPIO_PULL_NONE);

57
drivers/power/supply/s3c_adc_battery.c
View File

@ -13,7 +13,7 @@
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/leds.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/err.h>
#include <linux/timer.h>
#include <linux/jiffies.h>
@ -31,6 +31,7 @@ struct s3c_adc_bat {
struct power_supply *psy;
struct s3c_adc_client *client;
struct s3c_adc_bat_pdata *pdata;
struct gpio_desc *charge_finished;
int volt_value;
int cur_value;
unsigned int timestamp;
@ -132,9 +133,7 @@ static int calc_full_volt(int volt_val, int cur_val, int impedance)
static int charge_finished(struct s3c_adc_bat *bat)
{
return bat->pdata->gpio_inverted ?
!gpio_get_value(bat->pdata->gpio_charge_finished) :
gpio_get_value(bat->pdata->gpio_charge_finished);
return gpiod_get_value(bat->charge_finished);
}
static int s3c_adc_bat_get_property(struct power_supply *psy,
@ -169,7 +168,7 @@ static int s3c_adc_bat_get_property(struct power_supply *psy,
}
if (bat->cable_plugged &&
((bat->pdata->gpio_charge_finished < 0) ||
(!bat->charge_finished ||
!charge_finished(bat))) {
lut = bat->pdata->lut_acin;
lut_size = bat->pdata->lut_acin_cnt;
@ -206,7 +205,7 @@ static int s3c_adc_bat_get_property(struct power_supply *psy,
switch (psp) {
case POWER_SUPPLY_PROP_STATUS:
if (bat->pdata->gpio_charge_finished < 0)
if (!bat->charge_finished)
val->intval = bat->level == 100000 ?
POWER_SUPPLY_STATUS_FULL : bat->status;
else
@ -265,7 +264,7 @@ static void s3c_adc_bat_work(struct work_struct *work)
bat->status = POWER_SUPPLY_STATUS_DISCHARGING;
}
} else {
if ((bat->pdata->gpio_charge_finished >= 0) && is_plugged) {
if (bat->charge_finished && is_plugged) {
is_charged = charge_finished(&main_bat);
if (is_charged) {
if (bat->pdata->disable_charger)
@ -294,6 +293,7 @@ static int s3c_adc_bat_probe(struct platform_device *pdev)
struct s3c_adc_client *client;
struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
struct power_supply_config psy_cfg = {};
struct gpio_desc *gpiod;
int ret;
client = s3c_adc_register(pdev, NULL, NULL, 0);
@ -304,8 +304,17 @@ static int s3c_adc_bat_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, client);
gpiod = devm_gpiod_get_optional(&pdev->dev, "charge-status", GPIOD_IN);
if (IS_ERR(gpiod)) {
/* Could be probe deferral etc */
ret = PTR_ERR(gpiod);
dev_err(&pdev->dev, "no GPIO %d\n", ret);
return ret;
}
main_bat.client = client;
main_bat.pdata = pdata;
main_bat.charge_finished = gpiod;
main_bat.volt_value = -1;
main_bat.cur_value = -1;
main_bat.cable_plugged = 0;
@ -323,6 +332,7 @@ static int s3c_adc_bat_probe(struct platform_device *pdev)
backup_bat.client = client;
backup_bat.pdata = pdev->dev.platform_data;
backup_bat.charge_finished = gpiod;
backup_bat.volt_value = -1;
backup_bat.psy = power_supply_register(&pdev->dev,
&backup_bat_desc,
@ -335,12 +345,8 @@ static int s3c_adc_bat_probe(struct platform_device *pdev)
INIT_DELAYED_WORK(&bat_work, s3c_adc_bat_work);
if (pdata->gpio_charge_finished >= 0) {
ret = gpio_request(pdata->gpio_charge_finished, "charged");
if (ret)
goto err_gpio;
ret = request_irq(gpio_to_irq(pdata->gpio_charge_finished),
if (gpiod) {
ret = request_irq(gpiod_to_irq(gpiod),
s3c_adc_bat_charged,
IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
"battery charged", NULL);
@ -364,12 +370,9 @@ static int s3c_adc_bat_probe(struct platform_device *pdev)
return 0;
err_platform:
if (pdata->gpio_charge_finished >= 0)
free_irq(gpio_to_irq(pdata->gpio_charge_finished), NULL);
if (gpiod)
free_irq(gpiod_to_irq(gpiod), NULL);
err_irq:
if (pdata->gpio_charge_finished >= 0)
gpio_free(pdata->gpio_charge_finished);
err_gpio:
if (pdata->backup_volt_mult)
power_supply_unregister(backup_bat.psy);
err_reg_backup:
@ -389,10 +392,8 @@ static int s3c_adc_bat_remove(struct platform_device *pdev)
s3c_adc_release(client);
if (pdata->gpio_charge_finished >= 0) {
free_irq(gpio_to_irq(pdata->gpio_charge_finished), NULL);
gpio_free(pdata->gpio_charge_finished);
}
if (main_bat.charge_finished)
free_irq(gpiod_to_irq(main_bat.charge_finished), NULL);
cancel_delayed_work(&bat_work);
@ -408,12 +409,12 @@ static int s3c_adc_bat_suspend(struct platform_device *pdev,
{
struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
if (pdata->gpio_charge_finished >= 0) {
if (main_bat.charge_finished) {
if (device_may_wakeup(&pdev->dev))
enable_irq_wake(
gpio_to_irq(pdata->gpio_charge_finished));
gpiod_to_irq(main_bat.charge_finished));
else {
disable_irq(gpio_to_irq(pdata->gpio_charge_finished));
disable_irq(gpiod_to_irq(main_bat.charge_finished));
main_bat.pdata->disable_charger();
}
}
@ -425,12 +426,12 @@ static int s3c_adc_bat_resume(struct platform_device *pdev)
{
struct s3c_adc_bat_pdata *pdata = pdev->dev.platform_data;
if (pdata->gpio_charge_finished >= 0) {
if (main_bat.charge_finished) {
if (device_may_wakeup(&pdev->dev))
disable_irq_wake(
gpio_to_irq(pdata->gpio_charge_finished));
gpiod_to_irq(main_bat.charge_finished));
else
enable_irq(gpio_to_irq(pdata->gpio_charge_finished));
enable_irq(gpiod_to_irq(main_bat.charge_finished));
}
/* Schedule timer to check current status */

3
include/linux/s3c_adc_battery.h
View File

@ -14,9 +14,6 @@ struct s3c_adc_bat_pdata {
void (*enable_charger)(void);
void (*disable_charger)(void);
int gpio_charge_finished;
int gpio_inverted;
const struct s3c_adc_bat_thresh *lut_noac;
unsigned int lut_noac_cnt;
const struct s3c_adc_bat_thresh *lut_acin;