Merge tag 'for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/gi…

…t/sre/linux-power-supply

Pull power supply and reset updates from Sebastian Reichel:

 - new driver for Intel PIIX4

 - lots of module autoload fixes

 - misc fixes

* tag 'for-v4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply:
  power_supply: wm97xx_battery: use power_supply_get_drvdata
  wm8350_power: use permission-specific DEVICE_ATTR variants
  power: ipaq_micro_battery: fix alias
  power: supply: bq27xxx_battery: Fix register map for BQ27510 and BQ27520
  bq24190_charger: Fix PM runtime use for bq24190_battery_set_property
  power: supply: lp8788: remove an unneeded NULL check
  power: reset: zx-reboot: Fix module autoload
  power: reset: syscon-reboot-mode: Fix module autoload
  power: reset: at91-poweroff: Fix module autoload
  power: reset: at91-reset: Fix module autoload
  power: supply: axp288_fuel_gauge: Fix module autoload
  power: supply: max8997_charger: Fix module autoload
  power: supply: max17040: Change register transaction length from 8 bits to 16 bits
  power: supply: bq27xxx_battery: don't update poll_interval param if same
  power: supply: improve function-level documentation
  power: reset: Add Intel PIIX4 poweroff driver

drivers/input/touchscreen/wm97xx-core.c

@@ -682,7 +682,7 @@ static int wm97xx_probe(struct device *dev)
 	}
 	platform_set_drvdata(wm->battery_dev, wm);
 	wm->battery_dev->dev.parent = dev;
-	wm->battery_dev->dev.platform_data = pdata;
+	wm->battery_dev->dev.platform_data = pdata->batt_pdata;
 	ret = platform_device_add(wm->battery_dev);
 	if (ret < 0)
 		goto batt_reg_err;

drivers/power/reset/Kconfig

@@ -104,6 +104,16 @@ config POWER_RESET_MSM
 	help
 	  Power off and restart support for Qualcomm boards.
 
+config POWER_RESET_PIIX4_POWEROFF
+	tristate "Intel PIIX4 power-off driver"
+	depends on PCI
+	depends on MIPS || COMPILE_TEST
+	help
+	  This driver supports powering off a system using the Intel PIIX4
+	  southbridge, for example the MIPS Malta development board. The
+	  southbridge SOff state is entered in response to a request to
+	  power off the system.
+
 config POWER_RESET_LTC2952
 	bool "LTC2952 PowerPath power-off driver"
 	depends on OF_GPIO

drivers/power/reset/Makefile

@@ -10,6 +10,7 @@ obj-$(CONFIG_POWER_RESET_GPIO_RESTART) += gpio-restart.o
 obj-$(CONFIG_POWER_RESET_HISI) += hisi-reboot.o
 obj-$(CONFIG_POWER_RESET_IMX) += imx-snvs-poweroff.o
 obj-$(CONFIG_POWER_RESET_MSM) += msm-poweroff.o
+obj-$(CONFIG_POWER_RESET_PIIX4_POWEROFF) += piix4-poweroff.o
 obj-$(CONFIG_POWER_RESET_LTC2952) += ltc2952-poweroff.o
 obj-$(CONFIG_POWER_RESET_QNAP) += qnap-poweroff.o
 obj-$(CONFIG_POWER_RESET_RESTART) += restart-poweroff.o

drivers/power/reset/at91-poweroff.c

@@ -169,6 +169,7 @@ static const struct of_device_id at91_poweroff_of_match[] = {
 	{ .compatible = "atmel,at91sam9x5-shdwc", },
 	{ /*sentinel*/ }
 };
+MODULE_DEVICE_TABLE(of, at91_poweroff_of_match);
 
 static struct platform_driver at91_poweroff_driver = {
 	.remove = __exit_p(at91_poweroff_remove),

drivers/power/reset/at91-reset.c

@@ -175,6 +175,7 @@ static const struct of_device_id at91_reset_of_match[] = {
 	{ .compatible = "atmel,sama5d3-rstc", .data = sama5d3_restart },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(of, at91_reset_of_match);
 
 static struct notifier_block at91_restart_nb = {
 	.priority = 192,
@@ -242,6 +243,7 @@ static const struct platform_device_id at91_reset_plat_match[] = {
 	{ "at91-sam9g45-reset", (unsigned long)at91sam9g45_restart },
 	{ /* sentinel */ }
 };
+MODULE_DEVICE_TABLE(platform, at91_reset_plat_match);
 
 static struct platform_driver at91_reset_driver = {
 	.remove = __exit_p(at91_reset_remove),

drivers/power/reset/piix4-poweroff.c

@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2016 Imagination Technologies
+ * Author: Paul Burton <paul.burton@imgtec.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pci.h>
+#include <linux/pm.h>
+
+static struct pci_dev *pm_dev;
+static resource_size_t io_offset;
+
+enum piix4_pm_io_reg {
+	PIIX4_FUNC3IO_PMSTS			= 0x00,
+#define PIIX4_FUNC3IO_PMSTS_PWRBTN_STS		BIT(8)
+	PIIX4_FUNC3IO_PMCNTRL			= 0x04,
+#define PIIX4_FUNC3IO_PMCNTRL_SUS_EN		BIT(13)
+#define PIIX4_FUNC3IO_PMCNTRL_SUS_TYP_SOFF	(0x0 << 10)
+};
+
+#define PIIX4_SUSPEND_MAGIC			0x00120002
+
+static const int piix4_pm_io_region = PCI_BRIDGE_RESOURCES;
+
+static void piix4_poweroff(void)
+{
+	int spec_devid;
+	u16 sts;
+
+	/* Ensure the power button status is clear */
+	while (1) {
+		sts = inw(io_offset + PIIX4_FUNC3IO_PMSTS);
+		if (!(sts & PIIX4_FUNC3IO_PMSTS_PWRBTN_STS))
+			break;
+		outw(sts, io_offset + PIIX4_FUNC3IO_PMSTS);
+	}
+
+	/* Enable entry to suspend */
+	outw(PIIX4_FUNC3IO_PMCNTRL_SUS_TYP_SOFF | PIIX4_FUNC3IO_PMCNTRL_SUS_EN,
+	     io_offset + PIIX4_FUNC3IO_PMCNTRL);
+
+	/* If the special cycle occurs too soon this doesn't work... */
+	mdelay(10);
+
+	/*
+	 * The PIIX4 will enter the suspend state only after seeing a special
+	 * cycle with the correct magic data on the PCI bus. Generate that
+	 * cycle now.
+	 */
+	spec_devid = PCI_DEVID(0, PCI_DEVFN(0x1f, 0x7));
+	pci_bus_write_config_dword(pm_dev->bus, spec_devid, 0,
+				   PIIX4_SUSPEND_MAGIC);
+
+	/* Give the system some time to power down, then error */
+	mdelay(1000);
+	pr_emerg("Unable to poweroff system\n");
+}
+
+static int piix4_poweroff_probe(struct pci_dev *dev,
+				const struct pci_device_id *id)
+{
+	int res;
+
+	if (pm_dev)
+		return -EINVAL;
+
+	/* Request access to the PIIX4 PM IO registers */
+	res = pci_request_region(dev, piix4_pm_io_region,
+				 "PIIX4 PM IO registers");
+	if (res) {
+		dev_err(&dev->dev, "failed to request PM IO registers: %d\n",
+			res);
+		return res;
+	}
+
+	pm_dev = dev;
+	io_offset = pci_resource_start(dev, piix4_pm_io_region);
+	pm_power_off = piix4_poweroff;
+
+	return 0;
+}
+
+static void piix4_poweroff_remove(struct pci_dev *dev)
+{
+	if (pm_power_off == piix4_poweroff)
+		pm_power_off = NULL;
+
+	pci_release_region(dev, piix4_pm_io_region);
+	pm_dev = NULL;
+}
+
+static const struct pci_device_id piix4_poweroff_ids[] = {
+	{ PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3) },
+	{ 0 },
+};
+
+static struct pci_driver piix4_poweroff_driver = {
+	.name		= "piix4-poweroff",
+	.id_table	= piix4_poweroff_ids,
+	.probe		= piix4_poweroff_probe,
+	.remove		= piix4_poweroff_remove,
+};
+
+module_pci_driver(piix4_poweroff_driver);
+MODULE_AUTHOR("Paul Burton <paul.burton@imgtec.com>");
+MODULE_LICENSE("GPL");

drivers/power/reset/syscon-reboot-mode.c

@@ -74,6 +74,7 @@ static const struct of_device_id syscon_reboot_mode_of_match[] = {
 	{ .compatible = "syscon-reboot-mode" },
 	{}
 };
+MODULE_DEVICE_TABLE(of, syscon_reboot_mode_of_match);
 
 static struct platform_driver syscon_reboot_mode_driver = {
 	.probe = syscon_reboot_mode_probe,

drivers/power/reset/zx-reboot.c

@@ -72,6 +72,7 @@ static const struct of_device_id zx_reboot_of_match[] = {
 	{ .compatible = "zte,sysctrl" },
 	{}
 };
+MODULE_DEVICE_TABLE(of, zx_reboot_of_match);
 
 static struct platform_driver zx_reboot_driver = {
 	.probe = zx_reboot_probe,

drivers/power/supply/ab8500_fg.c

@@ -1900,7 +1900,7 @@ static void ab8500_fg_low_bat_work(struct work_struct *work)
  * ab8500_fg_battok_calc - calculate the bit pattern corresponding
  * to the target voltage.
  * @di:       pointer to the ab8500_fg structure
- * @target    target voltage
+ * @target:   target voltage
  *
  * Returns bit pattern closest to the target voltage
  * valid return values are 0-14. (0-BATT_OK_MAX_NR_INCREMENTS)
@@ -2391,7 +2391,7 @@ static void ab8500_fg_external_power_changed(struct power_supply *psy)
 }
 
 /**
- * abab8500_fg_reinit_work() - work to reset the FG algorithm
+ * ab8500_fg_reinit_work() - work to reset the FG algorithm
  * @work:	pointer to the work_struct structure
  *
  * Used to reset the current battery capacity to be able to
@@ -2528,7 +2528,7 @@ static struct kobj_type ab8500_fg_ktype = {
 };
 
 /**
- * ab8500_chargalg_sysfs_exit() - de-init of sysfs entry
+ * ab8500_fg_sysfs_exit() - de-init of sysfs entry
  * @di:                pointer to the struct ab8500_chargalg
  *
  * This function removes the entry in sysfs.
@@ -2539,7 +2539,7 @@ static void ab8500_fg_sysfs_exit(struct ab8500_fg *di)
 }
 
 /**
- * ab8500_chargalg_sysfs_init() - init of sysfs entry
+ * ab8500_fg_sysfs_init() - init of sysfs entry
  * @di:                pointer to the struct ab8500_chargalg
  *
  * This function adds an entry in sysfs.

drivers/power/supply/axp288_fuel_gauge.c

@@ -1120,6 +1120,7 @@ static const struct platform_device_id axp288_fg_id_table[] = {
 	{ .name = DEV_NAME },
 	{},
 };
+MODULE_DEVICE_TABLE(platform, axp288_fg_id_table);
 
 static int axp288_fuel_gauge_remove(struct platform_device *pdev)
 {

drivers/power/supply/bq24190_charger.c

@@ -1141,7 +1141,7 @@ static int bq24190_battery_set_property(struct power_supply *psy,
 
 	dev_dbg(bdi->dev, "prop: %d\n", psp);
 
-	pm_runtime_put_sync(bdi->dev);
+	pm_runtime_get_sync(bdi->dev);
 
 	switch (psp) {
 	case POWER_SUPPLY_PROP_ONLINE:

drivers/power/supply/bq27xxx_battery.c

@@ -164,6 +164,25 @@ static u8 bq27xxx_regs[][BQ27XXX_REG_MAX] = {
 		[BQ27XXX_REG_DCAP] = 0x3c,
 		[BQ27XXX_REG_AP] = INVALID_REG_ADDR,
 	},
+	[BQ27510] = {
+		[BQ27XXX_REG_CTRL] = 0x00,
+		[BQ27XXX_REG_TEMP] = 0x06,
+		[BQ27XXX_REG_INT_TEMP] = 0x28,
+		[BQ27XXX_REG_VOLT] = 0x08,
+		[BQ27XXX_REG_AI] = 0x14,
+		[BQ27XXX_REG_FLAGS] = 0x0a,
+		[BQ27XXX_REG_TTE] = 0x16,
+		[BQ27XXX_REG_TTF] = INVALID_REG_ADDR,
+		[BQ27XXX_REG_TTES] = 0x1a,
+		[BQ27XXX_REG_TTECP] = INVALID_REG_ADDR,
+		[BQ27XXX_REG_NAC] = 0x0c,
+		[BQ27XXX_REG_FCC] = 0x12,
+		[BQ27XXX_REG_CYCT] = 0x1e,
+		[BQ27XXX_REG_AE] = INVALID_REG_ADDR,
+		[BQ27XXX_REG_SOC] = 0x20,
+		[BQ27XXX_REG_DCAP] = 0x2e,
+		[BQ27XXX_REG_AP] = INVALID_REG_ADDR,
+	},
 	[BQ27530] = {
 		[BQ27XXX_REG_CTRL] = 0x00,
 		[BQ27XXX_REG_TEMP] = 0x06,
@@ -302,6 +321,24 @@ static enum power_supply_property bq27500_battery_props[] = {
 	POWER_SUPPLY_PROP_MANUFACTURER,
 };
 
+static enum power_supply_property bq27510_battery_props[] = {
+	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+	POWER_SUPPLY_PROP_CURRENT_NOW,
+	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
+	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_CHARGE_FULL,
+	POWER_SUPPLY_PROP_CHARGE_NOW,
+	POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN,
+	POWER_SUPPLY_PROP_CYCLE_COUNT,
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_MANUFACTURER,
+};
+
 static enum power_supply_property bq27530_battery_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
 	POWER_SUPPLY_PROP_PRESENT,
@@ -385,6 +422,7 @@ static struct {
 	BQ27XXX_PROP(BQ27000, bq27000_battery_props),
 	BQ27XXX_PROP(BQ27010, bq27010_battery_props),
 	BQ27XXX_PROP(BQ27500, bq27500_battery_props),
+	BQ27XXX_PROP(BQ27510, bq27510_battery_props),
 	BQ27XXX_PROP(BQ27530, bq27530_battery_props),
 	BQ27XXX_PROP(BQ27541, bq27541_battery_props),
 	BQ27XXX_PROP(BQ27545, bq27545_battery_props),
@@ -397,10 +435,11 @@ static LIST_HEAD(bq27xxx_battery_devices);
 static int poll_interval_param_set(const char *val, const struct kernel_param *kp)
 {
 	struct bq27xxx_device_info *di;
+	unsigned int prev_val = *(unsigned int *) kp->arg;
 	int ret;
 
 	ret = param_set_uint(val, kp);
-	if (ret < 0)
+	if (ret < 0 || prev_val == *(unsigned int *) kp->arg)
 		return ret;
 
 	mutex_lock(&bq27xxx_list_lock);
@@ -635,7 +674,8 @@ static int bq27xxx_battery_read_pwr_avg(struct bq27xxx_device_info *di)
  */
 static bool bq27xxx_battery_overtemp(struct bq27xxx_device_info *di, u16 flags)
 {
-	if (di->chip == BQ27500 || di->chip == BQ27541 || di->chip == BQ27545)
+	if (di->chip == BQ27500 || di->chip == BQ27510 ||
+	    di->chip == BQ27541 || di->chip == BQ27545)
 		return flags & (BQ27XXX_FLAG_OTC | BQ27XXX_FLAG_OTD);
 	if (di->chip == BQ27530 || di->chip == BQ27421)
 		return flags & BQ27XXX_FLAG_OT;

drivers/power/supply/bq27xxx_battery_i2c.c

@@ -149,8 +149,8 @@ static const struct i2c_device_id bq27xxx_i2c_id_table[] = {
 	{ "bq27200", BQ27000 },
 	{ "bq27210", BQ27010 },
 	{ "bq27500", BQ27500 },
-	{ "bq27510", BQ27500 },
-	{ "bq27520", BQ27500 },
+	{ "bq27510", BQ27510 },
+	{ "bq27520", BQ27510 },
 	{ "bq27530", BQ27530 },
 	{ "bq27531", BQ27530 },
 	{ "bq27541", BQ27541 },

drivers/power/supply/ipaq_micro_battery.c

@@ -313,4 +313,4 @@ module_platform_driver(micro_batt_device_driver);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("driver for iPAQ Atmel micro battery");
-MODULE_ALIAS("platform:battery-ipaq-micro");
+MODULE_ALIAS("platform:ipaq-micro-battery");

drivers/power/supply/lp8788-charger.c

@@ -384,9 +384,6 @@ static int lp8788_update_charger_params(struct platform_device *pdev,
 	for (i = 0; i < pdata->num_chg_params; i++) {
 		param = pdata->chg_params + i;
 
-		if (!param)
-			continue;
-
 		if (lp8788_is_valid_charger_register(param->addr)) {
 			ret = lp8788_write_byte(lp, param->addr, param->val);
 			if (ret)