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BACKPORT: power: supply: gpio-charger: Convert to GPIO descriptors

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This converts the GPIO charger to use exclusively GPIO
descriptors, moving the two remaining platforms passing
global GPIO numbers over to using a GPIO descriptor table.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

 Conflicts:
	arch/arm/mach-pxa/tosa.c
        arch/arm/mach-sa1100/collie.c
        drivers/power/supply/gpio-charger.c

(cherry picked from commit 17529bcf0a)
Signed-off-by: Ziyuan Xu <xzy.xu@rock-chips.com>
Change-Id: I22fb3dc7d42163d7a715d219665a14474cdd7422
This commit is contained in:
Linus Walleij
2020-08-27 10:48:28 +02:00
committed by Tao Huang
parent 34cf358963
commit ea25234920
2 changed files with 1 additions and 31 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/power/supply/gpio-charger.c
View File

@@ -14,7 +14,6 @@
*/
#include <linux/device.h>
#include <linux/gpio.h> /* For legacy platform data */
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
@@ -140,7 +139,6 @@ static int gpio_charger_probe(struct platform_device *pdev)
struct power_supply_desc *charger_desc;
struct gpio_desc *charge_status;
int charge_status_irq;
unsigned long flags;
int ret;
int num_props = 0;
@@ -158,29 +156,7 @@ static int gpio_charger_probe(struct platform_device *pdev)
* boardfile descriptor tables. It's good to try this first.
*/
gpio_charger->gpiod = devm_gpiod_get_optional(dev, NULL, GPIOD_IN);
/*
* Fallback to legacy platform data method, if no GPIO is specified
* using boardfile descriptor tables.
*/
if (!gpio_charger->gpiod && pdata) {
/* Non-DT: use legacy GPIO numbers */
if (!gpio_is_valid(pdata->gpio)) {
dev_err(dev, "Invalid gpio pin in pdata\n");
return -EINVAL;
}
flags = GPIOF_IN;
if (pdata->gpio_active_low)
flags |= GPIOF_ACTIVE_LOW;
ret = devm_gpio_request_one(dev, pdata->gpio, flags,
dev_name(dev));
if (ret) {
dev_err(dev, "Failed to request gpio pin: %d\n", ret);
return ret;
}
/* Then convert this to gpiod for now */
gpio_charger->gpiod = gpio_to_desc(pdata->gpio);
} else if (IS_ERR(gpio_charger->gpiod)) {
if (IS_ERR(gpio_charger->gpiod)) {
/* Just try again if this happens */
if (PTR_ERR(gpio_charger->gpiod) == -EPROBE_DEFER)
return -EPROBE_DEFER;

6
include/linux/power/gpio-charger.h
View File

@@ -22,18 +22,12 @@
* struct gpio_charger_platform_data - platform_data for gpio_charger devices
* @name: Name for the chargers power_supply device
* @type: Type of the charger
* @gpio: GPIO which is used to indicate the chargers status
* @gpio_active_low: Should be set to 1 if the GPIO is active low otherwise 0
* @supplied_to: Array of battery names to which this chargers supplies power
* @num_supplicants: Number of entries in the supplied_to array
*/
struct gpio_charger_platform_data {
const char *name;
enum power_supply_type type;
int gpio;
int gpio_active_low;
char **supplied_to;
size_t num_supplicants;
};