diff --git a/Documentation/devicetree/bindings/power_supply/gpio-charger.txt b/Documentation/devicetree/bindings/power_supply/gpio-charger.txt
new file mode 100644
index 0000000000000000000000000000000000000000..adbb5dc5b6e9ec05f54986a0bd40fccc36372a7c
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/gpio-charger.txt
@@ -0,0 +1,27 @@
+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>;
+ };
diff --git a/drivers/power/ds2782_battery.c b/drivers/power/ds2782_battery.c
index 041f9b638d28c5f788ee2c828d29b853728f67b4..39694883d3bf6c7ea108018c409a232d7495acef 100644
--- a/drivers/power/ds2782_battery.c
+++ b/drivers/power/ds2782_battery.c
@@ -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,
diff --git a/drivers/power/gpio-charger.c b/drivers/power/gpio-charger.c
index 3ee889fe00219e1d2e4a7fa1b9f16f987b9444d7..aef74bdf7ab31690ebb1d286df3a593e24d18788 100644
--- a/drivers/power/gpio-charger.c
+++ b/drivers/power/gpio-charger.c
@@ -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) {
- dev_err(&pdev->dev, "No platform data\n");
- return -EINVAL;
+ 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 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,
},
};
diff --git a/drivers/power/reset/axxia-reset.c b/drivers/power/reset/axxia-reset.c
index 3b1f8d60178423fb26362c8d5f8311a6a966f5ff..4e4cd1c8fe50db6f002606543b6d2cdc7d73799c 100644
--- a/drivers/power/reset/axxia-reset.c
+++ b/drivers/power/reset/axxia-reset.c
@@ -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[] = {
diff --git a/drivers/power/reset/brcmstb-reboot.c b/drivers/power/reset/brcmstb-reboot.c
index c523ea7a90ee731b90115c0fa4de095ba026d62a..100606f9b3dccb408b7fc59ada494db73a895e1f 100644
--- a/drivers/power/reset/brcmstb-reboot.c
+++ b/drivers/power/reset/brcmstb-reboot.c
@@ -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[] = {
diff --git a/drivers/power/reset/hisi-reboot.c b/drivers/power/reset/hisi-reboot.c
index 0c91d0231d36c69abf7b47c315c60dd427fb6081..5385460e23bb20f17cc4e4da8eea81b9dd4bda80 100644
--- a/drivers/power/reset/hisi-reboot.c
+++ b/drivers/power/reset/hisi-reboot.c
@@ -14,27 +14,36 @@
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/notifier.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
#include <linux/reboot.h>
#include <asm/proc-fns.h>
-#include <asm/system_misc.h>
static void __iomem *base;
static u32 reboot_offset;
-static void hisi_restart(enum reboot_mode mode, const char *cmd)
+static int hisi_restart_handler(struct notifier_block *this,
+ unsigned long mode, void *cmd)
{
writel_relaxed(0xdeadbeef, base + reboot_offset);
while (1)
cpu_do_idle();
+
+ return NOTIFY_DONE;
}
+static struct notifier_block hisi_restart_nb = {
+ .notifier_call = hisi_restart_handler,
+ .priority = 128,
+};
+
static int hisi_reboot_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
+ int err;
base = of_iomap(np, 0);
if (!base) {
@@ -47,9 +56,12 @@ static int hisi_reboot_probe(struct platform_device *pdev)
return -EINVAL;
}
- arm_pm_restart = hisi_restart;
+ err = register_restart_handler(&hisi_restart_nb);
+ if (err)
+ dev_err(&pdev->dev, "cannot register restart handler (err=%d)\n",
+ err);
- return 0;
+ return err;
}
static struct of_device_id hisi_reboot_of_match[] = {
diff --git a/drivers/power/reset/keystone-reset.c b/drivers/power/reset/keystone-reset.c
index 86bc100818b2bd0b297d428f036e0117539a673a..faedf16c8111895a84b0724e32d2fb219b84fb38 100644
--- a/drivers/power/reset/keystone-reset.c
+++ b/drivers/power/reset/keystone-reset.c
@@ -12,9 +12,9 @@
#include <linux/io.h>
#include <linux/module.h>
+#include <linux/notifier.h>
#include <linux/reboot.h>
#include <linux/regmap.h>
-#include <asm/system_misc.h>
#include <linux/mfd/syscon.h>
#include <linux/of_platform.h>
@@ -52,7 +52,8 @@ static inline int rsctrl_enable_rspll_write(void)
RSCTRL_KEY_MASK, RSCTRL_KEY);
}
-static void rsctrl_restart(enum reboot_mode mode, const char *cmd)
+static int rsctrl_restart_handler(struct notifier_block *this,
+ unsigned long mode, void *cmd)
{
/* enable write access to RSTCTRL */
rsctrl_enable_rspll_write();
@@ -60,8 +61,15 @@ static void rsctrl_restart(enum reboot_mode mode, const char *cmd)
/* reset the SOC */
regmap_update_bits(pllctrl_regs, rspll_offset + RSCTRL_RG,
RSCTRL_RESET_MASK, 0);
+
+ return NOTIFY_DONE;
}
+static struct notifier_block rsctrl_restart_nb = {
+ .notifier_call = rsctrl_restart_handler,
+ .priority = 128,
+};
+
static struct of_device_id rsctrl_of_match[] = {
{.compatible = "ti,keystone-reset", },
{},
@@ -114,8 +122,6 @@ static int rsctrl_probe(struct platform_device *pdev)
if (ret)
return ret;
- arm_pm_restart = rsctrl_restart;
-
/* disable a reset isolation for all module clocks */
ret = regmap_write(pllctrl_regs, rspll_offset + RSISO_RG, 0);
if (ret)
@@ -147,7 +153,11 @@ static int rsctrl_probe(struct platform_device *pdev)
return ret;
}
- return 0;
+ ret = register_restart_handler(&rsctrl_restart_nb);
+ if (ret)
+ dev_err(dev, "cannot register restart handler (err=%d)\n", ret);
+
+ return ret;
}
static struct platform_driver rsctrl_driver = {
diff --git a/drivers/power/reset/syscon-reboot.c b/drivers/power/reset/syscon-reboot.c
index 815b901822cf9299b6210982e370e2aaa3a503a7..c4049f45663f4b929a679e9ea548ed7bb4d18295 100644
--- a/drivers/power/reset/syscon-reboot.c
+++ b/drivers/power/reset/syscon-reboot.c
@@ -68,7 +68,7 @@ static int syscon_reboot_probe(struct platform_device *pdev)
return -EINVAL;
ctx->restart_handler.notifier_call = syscon_restart_handle;
- ctx->restart_handler.priority = 128;
+ ctx->restart_handler.priority = 192;
err = register_restart_handler(&ctx->restart_handler);
if (err)
dev_err(dev, "can't register restart notifier (err=%d)\n", err);
diff --git a/drivers/power/reset/vexpress-poweroff.c b/drivers/power/reset/vexpress-poweroff.c
index 4dc102e2b230e9476119d4b3e1d439b17151e084..9dfc9cee3232c439db6da6676a60ba920a307834 100644
--- a/drivers/power/reset/vexpress-poweroff.c
+++ b/drivers/power/reset/vexpress-poweroff.c
@@ -12,14 +12,14 @@
*/
#include <linux/delay.h>
+#include <linux/notifier.h>
#include <linux/of.h>
#include <linux/of_device.h>
#include <linux/platform_device.h>
+#include <linux/reboot.h>
#include <linux/stat.h>
#include <linux/vexpress.h>
-#include <asm/system_misc.h>
-
static void vexpress_reset_do(struct device *dev, const char *what)
{
int err = -ENOENT;
@@ -43,11 +43,19 @@ static void vexpress_power_off(void)
static struct device *vexpress_restart_device;
-static void vexpress_restart(enum reboot_mode reboot_mode, const char *cmd)
+static int vexpress_restart(struct notifier_block *this, unsigned long mode,
+ void *cmd)
{
vexpress_reset_do(vexpress_restart_device, "restart");
+
+ return NOTIFY_DONE;
}
+static struct notifier_block vexpress_restart_nb = {
+ .notifier_call = vexpress_restart,
+ .priority = 128,
+};
+
static ssize_t vexpress_reset_active_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
@@ -86,12 +94,28 @@ static struct of_device_id vexpress_reset_of_match[] = {
{}
};
+static int _vexpress_register_restart_handler(struct device *dev)
+{
+ int err;
+
+ vexpress_restart_device = dev;
+ err = register_restart_handler(&vexpress_restart_nb);
+ if (err) {
+ dev_err(dev, "cannot register restart handler (err=%d)\n", err);
+ return err;
+ }
+ device_create_file(dev, &dev_attr_active);
+
+ return 0;
+}
+
static int vexpress_reset_probe(struct platform_device *pdev)
{
enum vexpress_reset_func func;
const struct of_device_id *match =
of_match_device(vexpress_reset_of_match, &pdev->dev);
struct regmap *regmap;
+ int ret = 0;
if (match)
func = (enum vexpress_reset_func)match->data;
@@ -110,18 +134,14 @@ static int vexpress_reset_probe(struct platform_device *pdev)
break;
case FUNC_RESET:
if (!vexpress_restart_device)
- vexpress_restart_device = &pdev->dev;
- arm_pm_restart = vexpress_restart;
- device_create_file(&pdev->dev, &dev_attr_active);
+ ret = _vexpress_register_restart_handler(&pdev->dev);
break;
case FUNC_REBOOT:
- vexpress_restart_device = &pdev->dev;
- arm_pm_restart = vexpress_restart;
- device_create_file(&pdev->dev, &dev_attr_active);
+ ret = _vexpress_register_restart_handler(&pdev->dev);
break;
};
- return 0;
+ return ret;
}
static const struct platform_device_id vexpress_reset_id_table[] = {
diff --git a/drivers/power/reset/xgene-reboot.c b/drivers/power/reset/xgene-reboot.c
index 6b49be6867ab01f174de34cd28759951c61e7a2f..b0e5002f8debee0c95515bfd217e8d3a85844675 100644
--- a/drivers/power/reset/xgene-reboot.c
+++ b/drivers/power/reset/xgene-reboot.c
@@ -24,63 +24,67 @@
* For system shutdown, this is board specify. If a board designer
* implements GPIO shutdown, use the gpio-poweroff.c driver.
*/
+#include <linux/delay.h>
#include <linux/io.h>
+#include <linux/notifier.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/platform_device.h>
+#include <linux/reboot.h>
#include <linux/stat.h>
#include <linux/slab.h>
-#include <asm/system_misc.h>
struct xgene_reboot_context {
- struct platform_device *pdev;
+ struct device *dev;
void *csr;
u32 mask;
+ struct notifier_block restart_handler;
};
-static struct xgene_reboot_context *xgene_restart_ctx;
-
-static void xgene_restart(enum reboot_mode mode, const char *cmd)
+static int xgene_restart_handler(struct notifier_block *this,
+ unsigned long mode, void *cmd)
{
- struct xgene_reboot_context *ctx = xgene_restart_ctx;
- unsigned long timeout;
+ struct xgene_reboot_context *ctx =
+ container_of(this, struct xgene_reboot_context,
+ restart_handler);
/* Issue the reboot */
- if (ctx)
- writel(ctx->mask, ctx->csr);
+ writel(ctx->mask, ctx->csr);
+
+ mdelay(1000);
- timeout = jiffies + HZ;
- while (time_before(jiffies, timeout))
- cpu_relax();
+ dev_emerg(ctx->dev, "Unable to restart system\n");
- dev_emerg(&ctx->pdev->dev, "Unable to restart system\n");
+ return NOTIFY_DONE;
}
static int xgene_reboot_probe(struct platform_device *pdev)
{
struct xgene_reboot_context *ctx;
+ struct device *dev = &pdev->dev;
+ int err;
- ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
- if (!ctx) {
- dev_err(&pdev->dev, "out of memory for context\n");
- return -ENODEV;
- }
+ ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
- ctx->csr = of_iomap(pdev->dev.of_node, 0);
+ ctx->csr = of_iomap(dev->of_node, 0);
if (!ctx->csr) {
- devm_kfree(&pdev->dev, ctx);
- dev_err(&pdev->dev, "can not map resource\n");
+ dev_err(dev, "can not map resource\n");
return -ENODEV;
}
- if (of_property_read_u32(pdev->dev.of_node, "mask", &ctx->mask))
+ if (of_property_read_u32(dev->of_node, "mask", &ctx->mask))
ctx->mask = 0xFFFFFFFF;
- ctx->pdev = pdev;
- arm_pm_restart = xgene_restart;
- xgene_restart_ctx = ctx;
+ ctx->dev = dev;
+ ctx->restart_handler.notifier_call = xgene_restart_handler;
+ ctx->restart_handler.priority = 128;
+ err = register_restart_handler(&ctx->restart_handler);
+ if (err)
+ dev_err(dev, "cannot register restart handler (err=%d)\n", err);
- return 0;
+ return err;
}
static struct of_device_id xgene_reboot_of_match[] = {