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@xxxxxxxxxxxxxxx
Cc: Sergiy Kibrik <sakib@xxxxxxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
---
arch/arm/mach-s3c/mach-h1940.c | 12 +++++-
arch/arm/mach-s3c/mach-rx1950.c | 11 ++++-
drivers/power/supply/s3c_adc_battery.c | 57 +++++++++++++-------------
include/linux/s3c_adc_battery.h | 3 --
4 files changed, 49 insertions(+), 34 deletions(-)
diff --git a/arch/arm/mach-s3c/mach-h1940.c b/arch/arm/mach-s3c/mach-h1940.c
index 53d51aa83200..8a43ed1c4c4d 100644
--- a/arch/arm/mach-s3c/mach-h1940.c
+++ b/arch/arm/mach-s3c/mach-h1940.c
@@ -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);
diff --git a/arch/arm/mach-s3c/mach-rx1950.c b/arch/arm/mach-s3c/mach-rx1950.c
index b9758f0a9a14..6e19add158a9 100644
--- a/arch/arm/mach-s3c/mach-rx1950.c
+++ b/arch/arm/mach-s3c/mach-rx1950.c
@@ -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);
diff --git a/drivers/power/supply/s3c_adc_battery.c b/drivers/power/supply/s3c_adc_battery.c
index 60b7f41ab063..a2addc24ee8b 100644
--- a/drivers/power/supply/s3c_adc_battery.c
+++ b/drivers/power/supply/s3c_adc_battery.c
@@ -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 */
diff --git a/include/linux/s3c_adc_battery.h b/include/linux/s3c_adc_battery.h
index 833871dcf6fd..57f982c375f8 100644
--- a/include/linux/s3c_adc_battery.h
+++ b/include/linux/s3c_adc_battery.h
@@ -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;
--
2.26.2
