Commit 7051d8e6 authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge tag 'for-v3.19' of git://git.infradead.org/battery-2.6 

Pull power supply updates from Sebastian Reichel::
 "Power supply and reset changes for the v3.19 series

   - update power/reset drivers to use kernel restart handler
   - add power off driver for i.mx6
   - add DT support for gpio-charger"

* tag 'for-v3.19' of git://git.infradead.org/battery-2.6:
  power: reset: adjust priority of simple syscon reboot driver
  power: ds2782_battery: Simplify the PM hooks
  power/reset: brcmstb: Register with kernel restart handler
  power/reset: hisi: Register with kernel restart handler
  power/reset: keystone: Register with kernel restart handler
  power/reset: axxia: Register with kernel restart handler
  power/reset: xgene: Register with kernel restart handler
  power/reset: xgene: Use mdelay instead of jiffies based timeout
  power/reset: xgene: Use local variable dev instead of pdev->dev
  power/reset: xgene: Drop devm_kfree
  power/reset: xgene: Return -ENOMEM if out of memory
  power/reset: vexpress: Register with kernel restart handler
  power: reset: imx-snvs-poweroff: add power off driver for i.mx6
  power: gpio-charger: add device tree support
  dt-bindings: document gpio-charger bindings
parents d3255ec4 b81180b3

Documentation/devicetree/bindings/power_supply/gpio-charger.txt

0 → 100644
+27 −0
Original line number Diff line number Diff line 
gpio-charger



Required properties :

 - compatible : "gpio-charger"

 - gpios : GPIO indicating the charger presence.

   See GPIO binding in bindings/gpio/gpio.txt .

 - charger-type : power supply type, one of

     unknown

     battery

     ups

     mains

     usb-sdp (USB standard downstream port)

     usb-dcp (USB dedicated charging port)

     usb-cdp (USB charging downstream port)

     usb-aca (USB accessory charger adapter)



Example:



	usb_charger: charger {

		compatible = "gpio-charger";

		charger-type = "usb-sdp";

		gpios = <&gpf0 2 0 0 0>;

	}



	battery {

		power-supplies = <&usb_charger>;

	};

drivers/power/ds2782_battery.c

+2 −6
Original line number Diff line number Diff line
@@ -351,13 +351,9 @@ static int ds278x_resume(struct device *dev) 
	schedule_delayed_work(&info->bat_work, DS278x_DELAY);

	return 0;

}

#endif /* CONFIG_PM_SLEEP */



static SIMPLE_DEV_PM_OPS(ds278x_battery_pm_ops, ds278x_suspend, ds278x_resume);

#define DS278X_BATTERY_PM_OPS (&ds278x_battery_pm_ops)



#else

#define DS278X_BATTERY_PM_OPS NULL

#endif /* CONFIG_PM_SLEEP */



enum ds278x_num_id {

	DS2782 = 0,
@@ -460,7 +456,7 @@ MODULE_DEVICE_TABLE(i2c, ds278x_id); 
static struct i2c_driver ds278x_battery_driver = {

	.driver 	= {

		.name	= "ds2782-battery",

		.pm	= DS278X_BATTERY_PM_OPS,

		.pm	= &ds278x_battery_pm_ops,

	},

	.probe		= ds278x_battery_probe,

	.remove		= ds278x_battery_remove,

drivers/power/gpio-charger.c

+70 −2
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ 
#include <linux/platform_device.h>

#include <linux/power_supply.h>

#include <linux/slab.h>

#include <linux/of.h>

#include <linux/of_gpio.h>



#include <linux/power/gpio-charger.h>
@@ -69,6 +71,59 @@ static enum power_supply_property gpio_charger_properties[] = { 
	POWER_SUPPLY_PROP_ONLINE,

};



static

struct gpio_charger_platform_data *gpio_charger_parse_dt(struct device *dev)

{

	struct device_node *np = dev->of_node;

	struct gpio_charger_platform_data *pdata;

	const char *chargetype;

	enum of_gpio_flags flags;

	int ret;



	if (!np)

		return ERR_PTR(-ENOENT);



	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);

	if (!pdata)

		return ERR_PTR(-ENOMEM);



	pdata->name = np->name;



	pdata->gpio = of_get_gpio_flags(np, 0, &flags);

	if (pdata->gpio < 0) {

		if (pdata->gpio != -EPROBE_DEFER)

			dev_err(dev, "could not get charger gpio\n");

		return ERR_PTR(pdata->gpio);

	}



	pdata->gpio_active_low = !!(flags & OF_GPIO_ACTIVE_LOW);



	pdata->type = POWER_SUPPLY_TYPE_UNKNOWN;

	ret = of_property_read_string(np, "charger-type", &chargetype);

	if (ret >= 0) {

		if (!strncmp("unknown", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_UNKNOWN;

		else if (!strncmp("battery", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_BATTERY;

		else if (!strncmp("ups", chargetype, 3))

			pdata->type = POWER_SUPPLY_TYPE_UPS;

		else if (!strncmp("mains", chargetype, 5))

			pdata->type = POWER_SUPPLY_TYPE_MAINS;

		else if (!strncmp("usb-sdp", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_USB;

		else if (!strncmp("usb-dcp", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_USB_DCP;

		else if (!strncmp("usb-cdp", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_USB_CDP;

		else if (!strncmp("usb-aca", chargetype, 7))

			pdata->type = POWER_SUPPLY_TYPE_USB_ACA;

		else

			dev_warn(dev, "unknown charger type %s\n", chargetype);

	}



	return pdata;

}



static int gpio_charger_probe(struct platform_device *pdev)

{

	const struct gpio_charger_platform_data *pdata = pdev->dev.platform_data;
@@ -78,8 +133,13 @@ static int gpio_charger_probe(struct platform_device *pdev) 
	int irq;



	if (!pdata) {

		pdata = gpio_charger_parse_dt(&pdev->dev);

		if (IS_ERR(pdata)) {

			ret = PTR_ERR(pdata);

			if (ret != -EPROBE_DEFER)

				dev_err(&pdev->dev, "No platform data\n");

		return -EINVAL;

			return ret;

		}

	}



	if (!gpio_is_valid(pdata->gpio)) {
@@ -103,6 +163,7 @@ static int gpio_charger_probe(struct platform_device *pdev) 
	charger->get_property = gpio_charger_get_property;

	charger->supplied_to = pdata->supplied_to;

	charger->num_supplicants = pdata->num_supplicants;

	charger->of_node = pdev->dev.of_node;



	ret = gpio_request(pdata->gpio, dev_name(&pdev->dev));

	if (ret) {
@@ -189,12 +250,19 @@ static int gpio_charger_resume(struct device *dev) 
static SIMPLE_DEV_PM_OPS(gpio_charger_pm_ops,

		gpio_charger_suspend, gpio_charger_resume);



static const struct of_device_id gpio_charger_match[] = {

	{ .compatible = "gpio-charger" },

	{ }

};

MODULE_DEVICE_TABLE(of, gpio_charger_match);



static struct platform_driver gpio_charger_driver = {

	.probe = gpio_charger_probe,

	.remove = gpio_charger_remove,

	.driver = {

		.name = "gpio-charger",

		.pm = &gpio_charger_pm_ops,

		.of_match_table = gpio_charger_match,

	},

};

drivers/power/reset/axxia-reset.c

+15 −6
Original line number Diff line number Diff line
@@ -19,14 +19,12 @@ 
#include <linux/kernel.h>

#include <linux/mfd/syscon.h>

#include <linux/module.h>

#include <linux/notifier.h>

#include <linux/of.h>

#include <linux/platform_device.h>

#include <linux/reboot.h>

#include <linux/regmap.h>



#include <asm/system_misc.h>





#define SC_CRIT_WRITE_KEY	0x1000

#define SC_LATCH_ON_RESET	0x1004

#define SC_RESET_CONTROL	0x1008
@@ -39,7 +37,8 @@ 


static struct regmap *syscon;



static void do_axxia_restart(enum reboot_mode reboot_mode, const char *cmd)

static int axxia_restart_handler(struct notifier_block *this,

				 unsigned long mode, void *cmd)

{

	/* Access Key (0xab) */

	regmap_write(syscon, SC_CRIT_WRITE_KEY, 0xab);
@@ -50,11 +49,19 @@ static void do_axxia_restart(enum reboot_mode reboot_mode, const char *cmd) 
	/* Assert chip reset */

	regmap_update_bits(syscon, SC_RESET_CONTROL,

			   RSTCTL_RST_CHIP, RSTCTL_RST_CHIP);



	return NOTIFY_DONE;

}



static struct notifier_block axxia_restart_nb = {

	.notifier_call = axxia_restart_handler,

	.priority = 128,

};



static int axxia_reset_probe(struct platform_device *pdev)

{

	struct device *dev = &pdev->dev;

	int err;



	syscon = syscon_regmap_lookup_by_phandle(dev->of_node, "syscon");

	if (IS_ERR(syscon)) {
@@ -62,9 +69,11 @@ static int axxia_reset_probe(struct platform_device *pdev) 
		return PTR_ERR(syscon);

	}



	arm_pm_restart = do_axxia_restart;

	err = register_restart_handler(&axxia_restart_nb);

	if (err)

		dev_err(dev, "cannot register restart handler (err=%d)\n", err);



	return 0;

	return err;

}



static const struct of_device_id of_axxia_reset_match[] = {

drivers/power/reset/brcmstb-reboot.c

+19 −9
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/init.h>

#include <linux/io.h>

#include <linux/jiffies.h>

#include <linux/notifier.h>

#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/of_platform.h>
@@ -26,8 +27,6 @@ 
#include <linux/smp.h>

#include <linux/mfd/syscon.h>



#include <asm/system_misc.h>



#define RESET_SOURCE_ENABLE_REG 1

#define SW_MASTER_RESET_REG 2
@@ -35,7 +34,8 @@ static struct regmap *regmap; 
static u32 rst_src_en;

static u32 sw_mstr_rst;



static void brcmstb_reboot(enum reboot_mode mode, const char *cmd)

static int brcmstb_restart_handler(struct notifier_block *this,

				   unsigned long mode, void *cmd)

{

	int rc;

	u32 tmp;
@@ -43,31 +43,38 @@ static void brcmstb_reboot(enum reboot_mode mode, const char *cmd) 
	rc = regmap_write(regmap, rst_src_en, 1);

	if (rc) {

		pr_err("failed to write rst_src_en (%d)\n", rc);

		return;

		return NOTIFY_DONE;

	}



	rc = regmap_read(regmap, rst_src_en, &tmp);

	if (rc) {

		pr_err("failed to read rst_src_en (%d)\n", rc);

		return;

		return NOTIFY_DONE;

	}



	rc = regmap_write(regmap, sw_mstr_rst, 1);

	if (rc) {

		pr_err("failed to write sw_mstr_rst (%d)\n", rc);

		return;

		return NOTIFY_DONE;

	}



	rc = regmap_read(regmap, sw_mstr_rst, &tmp);

	if (rc) {

		pr_err("failed to read sw_mstr_rst (%d)\n", rc);

		return;

		return NOTIFY_DONE;

	}



	while (1)

		;



	return NOTIFY_DONE;

}



static struct notifier_block brcmstb_restart_nb = {

	.notifier_call = brcmstb_restart_handler,

	.priority = 128,

};



static int brcmstb_reboot_probe(struct platform_device *pdev)

{

	int rc;
@@ -93,9 +100,12 @@ static int brcmstb_reboot_probe(struct platform_device *pdev) 
		return -EINVAL;

	}



	arm_pm_restart = brcmstb_reboot;

	rc = register_restart_handler(&brcmstb_restart_nb);

	if (rc)

		dev_err(&pdev->dev,

			"cannot register restart handler (err=%d)\n", rc);



	return 0;

	return rc;

}



static const struct of_device_id of_match[] = {

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