Merge tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD updates from Lee Jones:
 "New Device Support:
   - Add support for AXP813 ADC to AXP20x
   - Add support for PM8005, PM8998 and PMI8998

  New Functionality:
   - Add support for Battery Power Supply to AXP813
   - Add support for SYSCON to SPARD SC27XX SPI
   - Add support for RTC to ChromeOS Embedded-Controller

  Fix-ups:
   - Remove unused code; exynos{4,5}-pmu, cros_ec, cros_ec_acpi_gpe
   - Remove duplicate error messages (-ENOMEM, etc); htc-i2cpld,
        janz-cmodio, max8997, rc5t583, sm501, smsc-ece1099, abx500-core,
        si476x-i2c, ti_am335x_tscadc, tps65090, tps6586x, tps65910,
        tps80031, twl6030-irq, viperboard
   - Succinctly use ptr to struct in sizeof(); rc5t583, abx500-core,
        sm501, smsc-ece1099
   - Simplify syntax for NULL ptr checking; abx500-core, sm501
   - No not unnecessarily initialise variables; tps65910, tps65910
   - Reorganise and simplify driver data; omap-usb-tll
   - Move to SPDX license statement; tps68470
   - Probe ADCs via DT; axp20x
   - Use new GPIOD API; arizona-core
   - Constify things; axp20x
   - Reduce code-size (use MACROS, etc); axp20x, omap-usb-host
   - Add DT support/docs; motorola-cpcap
   - Remove VLAs; rave-sp
   - Use devm_* managed resources; cros_ec
   - Interrogate HW for firmware version; rave-sp
   - Provide ACPI support for ChromeOS Embedded-Controller

  Bug Fixes:
   - Reorder ordered (enum) device list; tps65218
   - Only accept valid data from the offset; rave-sp
   - Refrain from copying junk from failed SPI read; cros_ec_dev
   - Fix potential memory leaks; pcf50633-core
   - Fix clock initialisation; twl-core
   - Fix build-issue; tps65911
   - Fix off-by-one error; tps65911
   - Fix code ordering issues; intel-lpss
   - Fix COMPILE_TEST related issues; pwm-stm32
   - Fix broken MMC card detection; asic3
   - Fix clocking related issues; intel-lpss-pci"

* tag 'mfd-next-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd: (84 commits)
  mfd: cros_ec: Remove unused __remove function
  mfd: wm97xx-core: Platform data can be NULL
  mfd: cros_ec_dev: Don't advertise junk features on failure
  mfd: cros_ec: Use devm_kzalloc for private data
  mfd: intel-lpss: Fix Intel Cannon Lake LPSS I2C input clock
  mfd: asic3: Fix broken MMC card detection
  mfd: timberdale: Fix spelling mistake "Uknown" -> "Unknown"
  mfd: omap-usb-host: Use match_string() helper
  mfd: stm32-timers: Fix pwm-stm32 linker issue with COMPILE_TEST
  pwm: stm32: Initialize raw local variables
  mfd: arizona: Update DT doc to support more standard Reset binding
  dt-bindings: mfd: Add bindings for DA9063L
  mfd: intel-lpss: Correct names of RESETS register bits
  mfd: qcom-spmi-pmic: Add support for pm8005, pm8998 and pmi8998
  mfd: intel-lpss: Program REMAP register in PIO mode
  mfd: cros_ec_i2c: Moving the system sleep pm ops to late
  mfd: cros_ec_i2c: Add ACPI module device table
  mfd: cros_ec_dev: Register shutdown function for debugfs
  mfd: cros_ec_dev: Register cros-ec-rtc driver as a subdevice
  mfd: cros_ec: Don't try to grab log when suspended
  ...

Documentation/devicetree/bindings/input/mtk-pmic-keys.txt

+MediaTek MT6397/MT6323 PMIC Keys Device Driver
+
+There are two key functions provided by MT6397/MT6323 PMIC, pwrkey
+and homekey. The key functions are defined as the subnode of the function
+node provided by MT6397/MT6323 PMIC that is being defined as one kind
+of Muti-Function Device (MFD)
+
+For MT6397/MT6323 MFD bindings see:
+Documentation/devicetree/bindings/mfd/mt6397.txt
+
+Required properties:
+- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
+- linux,keycodes: See Documentation/devicetree/bindings/input/keys.txt
+
+Optional Properties:
+- wakeup-source: See Documentation/devicetree/bindings/power/wakeup-source.txt
+- mediatek,long-press-mode: Long press key shutdown setting, 1 for
+	pwrkey only, 2 for pwrkey/homekey together, others for disabled.
+- power-off-time-sec: See Documentation/devicetree/bindings/input/keys.txt
+
+Example:
+
+	pmic: mt6397 {
+		compatible = "mediatek,mt6397";
+
+		...
+
+		mt6397keys: mt6397keys {
+			compatible = "mediatek,mt6397-keys";
+			mediatek,long-press-mode = <1>;
+			power-off-time-sec = <0>;
+
+			power {
+				linux,keycodes = <116>;
+				wakeup-source;
+			};
+
+			home {
+				linux,keycodes = <114>;
+			};
+		};
+
+	};

Documentation/devicetree/bindings/mfd/arizona.txt

@@ -50,7 +50,7 @@ Required properties:
 
 Optional properties:
 
-  - wlf,reset : GPIO specifier for the GPIO controlling /RESET
+  - reset-gpios : GPIO specifier for the GPIO controlling /RESET
 
   - clocks: Should reference the clocks supplied on MCLK1 and MCLK2
   - clock-names: Should contains two strings:
@@ -70,6 +70,10 @@ Optional properties:
     Documentation/devicetree/bindings/regulator/regulator.txt
     (wm5102, wm5110, wm8280, wm8997, wm8998, wm1814)
 
+Deprecated properties:
+
+  - wlf,reset : GPIO specifier for the GPIO controlling /RESET
+
 Also see child specific device properties:
   Regulator - ../regulator/arizona-regulator.txt
   Extcon    - ../extcon/extcon-arizona.txt

Documentation/devicetree/bindings/mfd/da9063.txt

-* Dialog DA9063 Power Management Integrated Circuit (PMIC)
+* Dialog DA9063/DA9063L Power Management Integrated Circuit (PMIC)
 
 DA9093 consists of a large and varied group of sub-devices (I2C Only):
 
@@ -6,14 +6,14 @@ Device                   Supply Names    Description
 ------                   ------------    -----------
 da9063-regulator        :               : LDOs & BUCKs
 da9063-onkey            :               : On Key
-da9063-rtc              :               : Real-Time Clock
+da9063-rtc              :               : Real-Time Clock (DA9063 only)
 da9063-watchdog         :               : Watchdog
 
 ======
 
 Required properties:
 
-- compatible : Should be "dlg,da9063"
+- compatible : Should be "dlg,da9063" or "dlg,da9063l"
 - reg : Specifies the I2C slave address (this defaults to 0x58 but it can be
   modified to match the chip's OTP settings).
 - interrupt-parent : Specifies the reference to the interrupt controller for
@@ -23,8 +23,8 @@ Required properties:
 
 Sub-nodes:
 
-- regulators : This node defines the settings for the LDOs and BUCKs. The
-  DA9063 regulators are bound using their names listed below:
+- regulators : This node defines the settings for the LDOs and BUCKs.
+  The DA9063(L) regulators are bound using their names listed below:
 
     bcore1    : BUCK CORE1
     bcore2    : BUCK CORE2
@@ -32,16 +32,16 @@ Sub-nodes:
     bmem      : BUCK MEM
     bio       : BUCK IO
     bperi     : BUCK PERI
-    ldo1      : LDO_1
-    ldo2      : LDO_2
+    ldo1      : LDO_1	(DA9063 only)
+    ldo2      : LDO_2	(DA9063 only)
     ldo3      : LDO_3
-    ldo4      : LDO_4
-    ldo5      : LDO_5
-    ldo6      : LDO_6
+    ldo4      : LDO_4	(DA9063 only)
+    ldo5      : LDO_5	(DA9063 only)
+    ldo6      : LDO_6	(DA9063 only)
     ldo7      : LDO_7
     ldo8      : LDO_8
     ldo9      : LDO_9
-    ldo10     : LDO_10
+    ldo10     : LDO_10	(DA9063 only)
     ldo11     : LDO_11
 
   The component follows the standard regulator framework and the bindings
@@ -49,8 +49,9 @@ Sub-nodes:
   Documentation/devicetree/bindings/regulator/regulator.txt
 
 - rtc : This node defines settings for the Real-Time Clock associated with
-  the DA9063. There are currently no entries in this binding, however
-  compatible = "dlg,da9063-rtc" should be added if a node is created.
+  the DA9063 only. The RTC is not present in DA9063L. There are currently
+  no entries in this binding, however compatible = "dlg,da9063-rtc" should
+  be added if a node is created.
 
 - onkey : This node defines the OnKey settings for controlling the key
   functionality of the device. The node should contain the compatible property
@@ -65,8 +66,9 @@ Sub-nodes:
     and KEY_SLEEP.
 
 - watchdog : This node defines settings for the Watchdog timer associated
-  with the DA9063. There are currently no entries in this binding, however
-  compatible = "dlg,da9063-watchdog" should be added if a node is created.
+  with the DA9063 and DA9063L. There are currently no entries in this
+  binding, however compatible = "dlg,da9063-watchdog" should be added
+  if a node is created.
 
 
 Example:

Documentation/devicetree/bindings/mfd/motorola-cpcap.txt

@@ -12,6 +12,30 @@ Required properties:
 - spi-max-frequency	: Typically set to 3000000
 - spi-cs-high		: SPI chip select direction
 
+Optional subnodes:
+
+The sub-functions of CPCAP get their own node with their own compatible values,
+which are described in the following files:
+
+- ../power/supply/cpcap-battery.txt
+- ../power/supply/cpcap-charger.txt
+- ../regulator/cpcap-regulator.txt
+- ../phy/phy-cpcap-usb.txt
+- ../input/cpcap-pwrbutton.txt
+- ../rtc/cpcap-rtc.txt
+- ../leds/leds-cpcap.txt
+- ../iio/adc/cpcap-adc.txt
+
+The only exception is the audio codec. Instead of a compatible value its
+node must be named "audio-codec".
+
+Required properties for the audio-codec subnode:
+
+- #sound-dai-cells = <1>;
+
+The audio-codec provides two DAIs. The first one is connected to the
+Stereo HiFi DAC and the second one is connected to the Voice DAC.
+
 Example:
 
 &mcspi1 {
@@ -26,6 +50,24 @@ Example:
 		#size-cells = <0>;
 		spi-max-frequency = <3000000>;
 		spi-cs-high;
+
+		audio-codec {
+			#sound-dai-cells = <1>;
+
+			/* HiFi */
+			port@0 {
+				endpoint {
+					remote-endpoint = <&cpu_dai1>;
+				};
+			};
+
+			/* Voice */
+			port@1 {
+				endpoint {
+					remote-endpoint = <&cpu_dai2>;
+				};
+			};
+		};
 	};
 };
 

Documentation/devicetree/bindings/mfd/mt6397.txt

@@ -7,6 +7,7 @@ MT6397/MT6323 is a multifunction device with the following sub modules:
 - GPIO
 - Clock
 - LED
+- Keys
 
 It is interfaced to host controller using SPI interface by a proprietary hardware
 called PMIC wrapper or pwrap. MT6397/MT6323 MFD is a child device of pwrap.
@@ -40,6 +41,11 @@ Optional subnodes:
 		- compatible: "mediatek,mt6323-led"
 	see Documentation/devicetree/bindings/leds/leds-mt6323.txt
 
+- keys
+	Required properties:
+		- compatible: "mediatek,mt6397-keys" or "mediatek,mt6323-keys"
+	see Documentation/devicetree/bindings/input/mtk-pmic-keys.txt
+
 Example:
 	pwrap: pwrap@1000f000 {
 		compatible = "mediatek,mt8135-pwrap";

Documentation/devicetree/bindings/mfd/qcom,spmi-pmic.txt

@@ -29,6 +29,9 @@ Required properties:
                    "qcom,pm8916",
                    "qcom,pm8004",
                    "qcom,pm8909",
+                   "qcom,pm8998",
+                   "qcom,pmi8998",
+                   "qcom,pm8005",
                    or generalized "qcom,spmi-pmic".
 - reg:             Specifies the SPMI USID slave address for this device.
                    For more information see:

MAINTAINERS

@@ -13562,6 +13562,16 @@ T:	git git://linuxtv.org/media_tree.git
 S:	Maintained
 F:	drivers/media/usb/stk1160/
 
+STM32 TIMER/LPTIMER DRIVERS
+M:	Fabrice Gasnier <fabrice.gasnier@st.com>
+S:	Maintained
+F:	drivers/*/stm32-*timer*
+F:	drivers/pwm/pwm-stm32*
+F:	include/linux/*/stm32-*tim*
+F:	Documentation/ABI/testing/*timer-stm32
+F:	Documentation/devicetree/bindings/*/stm32-*timer
+F:	Documentation/devicetree/bindings/pwm/pwm-stm32*
+
 STMMAC ETHERNET DRIVER
 M:	Giuseppe Cavallaro <peppe.cavallaro@st.com>
 M:	Alexandre Torgue <alexandre.torgue@st.com>

drivers/input/keyboard/Kconfig

@@ -747,4 +747,13 @@ config KEYBOARD_BCM
 	  To compile this driver as a module, choose M here: the
 	  module will be called bcm-keypad.
 
+config KEYBOARD_MTK_PMIC
+	tristate "MediaTek PMIC keys support"
+	depends on MFD_MT6397
+	help
+	  Say Y here if you want to use the pmic keys (powerkey/homekey).
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called pmic-keys.
+
 endif

drivers/input/keyboard/Makefile

@@ -40,6 +40,7 @@ obj-$(CONFIG_KEYBOARD_MATRIX)		+= matrix_keypad.o
 obj-$(CONFIG_KEYBOARD_MAX7359)		+= max7359_keypad.o
 obj-$(CONFIG_KEYBOARD_MCS)		+= mcs_touchkey.o
 obj-$(CONFIG_KEYBOARD_MPR121)		+= mpr121_touchkey.o
+obj-$(CONFIG_KEYBOARD_MTK_PMIC) 	+= mtk-pmic-keys.o
 obj-$(CONFIG_KEYBOARD_NEWTON)		+= newtonkbd.o
 obj-$(CONFIG_KEYBOARD_NOMADIK)		+= nomadik-ske-keypad.o
 obj-$(CONFIG_KEYBOARD_NSPIRE)		+= nspire-keypad.o

drivers/input/keyboard/mtk-pmic-keys.c

+/*
+ * Copyright (C) 2017 MediaTek, Inc.
+ *
+ * Author: Chen Zhong <chen.zhong@mediatek.com>
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/input.h>
+#include <linux/interrupt.h>
+#include <linux/platform_device.h>
+#include <linux/kernel.h>
+#include <linux/of.h>
+#include <linux/of_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/mt6323/registers.h>
+#include <linux/mfd/mt6397/registers.h>
+#include <linux/mfd/mt6397/core.h>
+
+#define MTK_PMIC_PWRKEY_RST_EN_MASK	0x1
+#define MTK_PMIC_PWRKEY_RST_EN_SHIFT	6
+#define MTK_PMIC_HOMEKEY_RST_EN_MASK	0x1
+#define MTK_PMIC_HOMEKEY_RST_EN_SHIFT	5
+#define MTK_PMIC_RST_DU_MASK		0x3
+#define MTK_PMIC_RST_DU_SHIFT		8
+
+#define MTK_PMIC_PWRKEY_RST		\
+	(MTK_PMIC_PWRKEY_RST_EN_MASK << MTK_PMIC_PWRKEY_RST_EN_SHIFT)
+#define MTK_PMIC_HOMEKEY_RST		\
+	(MTK_PMIC_HOMEKEY_RST_EN_MASK << MTK_PMIC_HOMEKEY_RST_EN_SHIFT)
+
+#define MTK_PMIC_PWRKEY_INDEX	0
+#define MTK_PMIC_HOMEKEY_INDEX	1
+#define MTK_PMIC_MAX_KEY_COUNT	2
+
+struct mtk_pmic_keys_regs {
+	u32 deb_reg;
+	u32 deb_mask;
+	u32 intsel_reg;
+	u32 intsel_mask;
+};
+
+#define MTK_PMIC_KEYS_REGS(_deb_reg, _deb_mask,		\
+	_intsel_reg, _intsel_mask)			\
+{							\
+	.deb_reg		= _deb_reg,		\
+	.deb_mask		= _deb_mask,		\
+	.intsel_reg		= _intsel_reg,		\
+	.intsel_mask		= _intsel_mask,		\
+}
+
+struct mtk_pmic_regs {
+	const struct mtk_pmic_keys_regs keys_regs[MTK_PMIC_MAX_KEY_COUNT];
+	u32 pmic_rst_reg;
+};
+
+static const struct mtk_pmic_regs mt6397_regs = {
+	.keys_regs[MTK_PMIC_PWRKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6397_CHRSTATUS,
+		0x8, MT6397_INT_RSV, 0x10),
+	.keys_regs[MTK_PMIC_HOMEKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6397_OCSTATUS2,
+		0x10, MT6397_INT_RSV, 0x8),
+	.pmic_rst_reg = MT6397_TOP_RST_MISC,
+};
+
+static const struct mtk_pmic_regs mt6323_regs = {
+	.keys_regs[MTK_PMIC_PWRKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6323_CHRSTATUS,
+		0x2, MT6323_INT_MISC_CON, 0x10),
+	.keys_regs[MTK_PMIC_HOMEKEY_INDEX] =
+		MTK_PMIC_KEYS_REGS(MT6323_CHRSTATUS,
+		0x4, MT6323_INT_MISC_CON, 0x8),
+	.pmic_rst_reg = MT6323_TOP_RST_MISC,
+};
+
+struct mtk_pmic_keys_info {
+	struct mtk_pmic_keys *keys;
+	const struct mtk_pmic_keys_regs *regs;
+	unsigned int keycode;
+	int irq;
+	bool wakeup:1;
+};
+
+struct mtk_pmic_keys {
+	struct input_dev *input_dev;
+	struct device *dev;
+	struct regmap *regmap;
+	struct mtk_pmic_keys_info keys[MTK_PMIC_MAX_KEY_COUNT];
+};
+
+enum mtk_pmic_keys_lp_mode {
+	LP_DISABLE,
+	LP_ONEKEY,
+	LP_TWOKEY,
+};
+
+static void mtk_pmic_keys_lp_reset_setup(struct mtk_pmic_keys *keys,
+		u32 pmic_rst_reg)
+{
+	int ret;
+	u32 long_press_mode, long_press_debounce;
+
+	ret = of_property_read_u32(keys->dev->of_node,
+		"power-off-time-sec", &long_press_debounce);
+	if (ret)
+		long_press_debounce = 0;
+
+	regmap_update_bits(keys->regmap, pmic_rst_reg,
+			   MTK_PMIC_RST_DU_MASK << MTK_PMIC_RST_DU_SHIFT,
+			   long_press_debounce << MTK_PMIC_RST_DU_SHIFT);
+
+	ret = of_property_read_u32(keys->dev->of_node,
+		"mediatek,long-press-mode", &long_press_mode);
+	if (ret)
+		long_press_mode = LP_DISABLE;
+
+	switch (long_press_mode) {
+	case LP_ONEKEY:
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_PWRKEY_RST,
+				   MTK_PMIC_PWRKEY_RST);
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_HOMEKEY_RST,
+				   0);
+		break;
+	case LP_TWOKEY:
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_PWRKEY_RST,
+				   MTK_PMIC_PWRKEY_RST);
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_HOMEKEY_RST,
+				   MTK_PMIC_HOMEKEY_RST);
+		break;
+	case LP_DISABLE:
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_PWRKEY_RST,
+				   0);
+		regmap_update_bits(keys->regmap, pmic_rst_reg,
+				   MTK_PMIC_HOMEKEY_RST,
+				   0);
+		break;
+	default:
+		break;
+	}
+}
+
+static irqreturn_t mtk_pmic_keys_irq_handler_thread(int irq, void *data)
+{
+	struct mtk_pmic_keys_info *info = data;
+	u32 key_deb, pressed;
+
+	regmap_read(info->keys->regmap, info->regs->deb_reg, &key_deb);
+
+	key_deb &= info->regs->deb_mask;
+
+	pressed = !key_deb;
+
+	input_report_key(info->keys->input_dev, info->keycode, pressed);
+	input_sync(info->keys->input_dev);
+
+	dev_dbg(info->keys->dev, "(%s) key =%d using PMIC\n",
+		 pressed ? "pressed" : "released", info->keycode);
+
+	return IRQ_HANDLED;
+}
+
+static int mtk_pmic_key_setup(struct mtk_pmic_keys *keys,
+		struct mtk_pmic_keys_info *info)
+{
+	int ret;
+
+	info->keys = keys;
+
+	ret = regmap_update_bits(keys->regmap, info->regs->intsel_reg,
+				 info->regs->intsel_mask,
+				 info->regs->intsel_mask);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_request_threaded_irq(keys->dev, info->irq, NULL,
+					mtk_pmic_keys_irq_handler_thread,
+					IRQF_ONESHOT | IRQF_TRIGGER_HIGH,
+					"mtk-pmic-keys", info);
+	if (ret) {
+		dev_err(keys->dev, "Failed to request IRQ: %d: %d\n",
+			info->irq, ret);
+		return ret;
+	}
+
+	input_set_capability(keys->input_dev, EV_KEY, info->keycode);
+
+	return 0;
+}
+
+static int __maybe_unused mtk_pmic_keys_suspend(struct device *dev)
+{
+	struct mtk_pmic_keys *keys = dev_get_drvdata(dev);
+	int index;
+
+	for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
+		if (keys->keys[index].wakeup)
+			enable_irq_wake(keys->keys[index].irq);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused mtk_pmic_keys_resume(struct device *dev)
+{
+	struct mtk_pmic_keys *keys = dev_get_drvdata(dev);
+	int index;
+
+	for (index = 0; index < MTK_PMIC_MAX_KEY_COUNT; index++) {
+		if (keys->keys[index].wakeup)
+			disable_irq_wake(keys->keys[index].irq);
+	}
+
+	return 0;
+}
+
+static SIMPLE_DEV_PM_OPS(mtk_pmic_keys_pm_ops, mtk_pmic_keys_suspend,
+			mtk_pmic_keys_resume);
+
+static const struct of_device_id of_mtk_pmic_keys_match_tbl[] = {
+	{
+		.compatible = "mediatek,mt6397-keys",
+		.data = &mt6397_regs,
+	}, {
+		.compatible = "mediatek,mt6323-keys",
+		.data = &mt6323_regs,
+	}, {
+		/* sentinel */
+	}
+};
+MODULE_DEVICE_TABLE(of, of_mtk_pmic_keys_match_tbl);
+
+static int mtk_pmic_keys_probe(struct platform_device *pdev)
+{
+	int error, index = 0;
+	unsigned int keycount;
+	struct mt6397_chip *pmic_chip = dev_get_drvdata(pdev->dev.parent);
+	struct device_node *node = pdev->dev.of_node, *child;
+	struct mtk_pmic_keys *keys;
+	const struct mtk_pmic_regs *mtk_pmic_regs;
+	struct input_dev *input_dev;
+	const struct of_device_id *of_id =
+		of_match_device(of_mtk_pmic_keys_match_tbl, &pdev->dev);
+
+	keys = devm_kzalloc(&pdev->dev, sizeof(*keys), GFP_KERNEL);
+	if (!keys)
+		return -ENOMEM;
+
+	keys->dev = &pdev->dev;
+	keys->regmap = pmic_chip->regmap;
+	mtk_pmic_regs = of_id->data;
+
+	keys->input_dev = input_dev = devm_input_allocate_device(keys->dev);
+	if (!input_dev) {
+		dev_err(keys->dev, "input allocate device fail.\n");
+		return -ENOMEM;
+	}
+
+	input_dev->name = "mtk-pmic-keys";
+	input_dev->id.bustype = BUS_HOST;
+	input_dev->id.vendor = 0x0001;
+	input_dev->id.product = 0x0001;
+	input_dev->id.version = 0x0001;
+
+	keycount = of_get_available_child_count(node);
+	if (keycount > MTK_PMIC_MAX_KEY_COUNT) {
+		dev_err(keys->dev, "too many keys defined (%d)\n", keycount);
+		return -EINVAL;
+	}
+
+	for_each_child_of_node(node, child) {
+		keys->keys[index].regs = &mtk_pmic_regs->keys_regs[index];
+
+		keys->keys[index].irq = platform_get_irq(pdev, index);
+		if (keys->keys[index].irq < 0)
+			return keys->keys[index].irq;
+
+		error = of_property_read_u32(child,
+			"linux,keycodes", &keys->keys[index].keycode);
+		if (error) {
+			dev_err(keys->dev,
+				"failed to read key:%d linux,keycode property: %d\n",
+				index, error);
+			return error;
+		}
+
+		if (of_property_read_bool(child, "wakeup-source"))
+			keys->keys[index].wakeup = true;
+
+		error = mtk_pmic_key_setup(keys, &keys->keys[index]);
+		if (error)
+			return error;
+
+		index++;
+	}
+
+	error = input_register_device(input_dev);
+	if (error) {
+		dev_err(&pdev->dev,
+			"register input device failed (%d)\n", error);
+		return error;
+	}
+
+	mtk_pmic_keys_lp_reset_setup(keys, mtk_pmic_regs->pmic_rst_reg);
+
+	platform_set_drvdata(pdev, keys);
+
+	return 0;
+}
+
+static struct platform_driver pmic_keys_pdrv = {
+	.probe = mtk_pmic_keys_probe,
+	.driver = {
+		   .name = "mtk-pmic-keys",
+		   .of_match_table = of_mtk_pmic_keys_match_tbl,
+		   .pm = &mtk_pmic_keys_pm_ops,
+	},
+};
+
+module_platform_driver(pmic_keys_pdrv);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Chen Zhong <chen.zhong@mediatek.com>");
+MODULE_DESCRIPTION("MTK pmic-keys driver v0.1");

drivers/mfd/Makefile

@@ -13,7 +13,6 @@ obj-$(CONFIG_MFD_ASIC3)		+= asic3.o tmio_core.o
 obj-$(CONFIG_MFD_BCM590XX)	+= bcm590xx.o
 obj-$(CONFIG_MFD_BD9571MWV)	+= bd9571mwv.o
 cros_ec_core-objs		:= cros_ec.o
-cros_ec_core-$(CONFIG_ACPI)	+= cros_ec_acpi_gpe.o
 obj-$(CONFIG_MFD_CROS_EC)	+= cros_ec_core.o
 obj-$(CONFIG_MFD_CROS_EC_I2C)	+= cros_ec_i2c.o
 obj-$(CONFIG_MFD_CROS_EC_SPI)	+= cros_ec_spi.o

drivers/mfd/ab8500-debugfs.c

@@ -2519,11 +2519,10 @@ static ssize_t ab8500_subscribe_write(struct file *file,
 	if (!dev_attr[irq_index])
 		return -ENOMEM;
 
-	event_name[irq_index] = kmalloc(count, GFP_KERNEL);
+	event_name[irq_index] = kasprintf(GFP_KERNEL, "%lu", user_val);
 	if (!event_name[irq_index])
 		return -ENOMEM;
 
-	sprintf(event_name[irq_index], "%lu", user_val);
 	dev_attr[irq_index]->show = show_irq;
 	dev_attr[irq_index]->store = NULL;
 	dev_attr[irq_index]->attr.name = event_name[irq_index];

drivers/mfd/abx500-core.c

@@ -37,15 +37,12 @@ int abx500_register_ops(struct device *dev, struct abx500_ops *ops)
 {
 	struct abx500_device_entry *dev_entry;
 
-	dev_entry = devm_kzalloc(dev,
-				 sizeof(struct abx500_device_entry),
-				 GFP_KERNEL);
-	if (!dev_entry) {
-		dev_err(dev, "register_ops kzalloc failed");
+	dev_entry = devm_kzalloc(dev, sizeof(*dev_entry), GFP_KERNEL);
+	if (!dev_entry)
 		return -ENOMEM;
-	}
+
 	dev_entry->dev = dev;
-	memcpy(&dev_entry->ops, ops, sizeof(struct abx500_ops));
+	memcpy(&dev_entry->ops, ops, sizeof(*ops));
 
 	list_add_tail(&dev_entry->list, &abx500_list);
 	return 0;
@@ -68,7 +65,7 @@ int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->set_register != NULL))
+	if (ops && ops->set_register)
 		return ops->set_register(dev, bank, reg, value);
 	else
 		return -ENOTSUPP;
@@ -81,7 +78,7 @@ int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->get_register != NULL))
+	if (ops && ops->get_register)
 		return ops->get_register(dev, bank, reg, value);
 	else
 		return -ENOTSUPP;
@@ -94,7 +91,7 @@ int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->get_register_page != NULL))
+	if (ops && ops->get_register_page)
 		return ops->get_register_page(dev, bank,
 			first_reg, regvals, numregs);
 	else
@@ -108,7 +105,7 @@ int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->mask_and_set_register != NULL))
+	if (ops && ops->mask_and_set_register)
 		return ops->mask_and_set_register(dev, bank,
 			reg, bitmask, bitvalues);
 	else
@@ -121,7 +118,7 @@ int abx500_get_chip_id(struct device *dev)
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->get_chip_id != NULL))
+	if (ops && ops->get_chip_id)
 		return ops->get_chip_id(dev);
 	else
 		return -ENOTSUPP;
@@ -133,7 +130,7 @@ int abx500_event_registers_startup_state_get(struct device *dev, u8 *event)
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->event_registers_startup_state_get != NULL))
+	if (ops && ops->event_registers_startup_state_get)
 		return ops->event_registers_startup_state_get(dev, event);
 	else
 		return -ENOTSUPP;
@@ -145,7 +142,7 @@ int abx500_startup_irq_enabled(struct device *dev, unsigned int irq)
 	struct abx500_ops *ops;
 
 	lookup_ops(dev->parent, &ops);
-	if ((ops != NULL) && (ops->startup_irq_enabled != NULL))
+	if (ops && ops->startup_irq_enabled)
 		return ops->startup_irq_enabled(dev, irq);
 	else
 		return -ENOTSUPP;

drivers/mfd/arizona-core.c

@@ -13,13 +13,12 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/err.h>
-#include <linux/gpio.h>
+#include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
 #include <linux/mfd/core.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
-#include <linux/of_gpio.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
@@ -279,7 +278,7 @@ static int arizona_wait_for_boot(struct arizona *arizona)
 static inline void arizona_enable_reset(struct arizona *arizona)
 {
 	if (arizona->pdata.reset)
-		gpio_set_value_cansleep(arizona->pdata.reset, 0);
+		gpiod_set_raw_value_cansleep(arizona->pdata.reset, 0);
 }
 
 static void arizona_disable_reset(struct arizona *arizona)
@@ -295,7 +294,7 @@ static void arizona_disable_reset(struct arizona *arizona)
 			break;
 		}
 
-		gpio_set_value_cansleep(arizona->pdata.reset, 1);
+		gpiod_set_raw_value_cansleep(arizona->pdata.reset, 1);
 		usleep_range(1000, 5000);
 	}
 }
@@ -799,14 +798,27 @@ static int arizona_of_get_core_pdata(struct arizona *arizona)
 	struct arizona_pdata *pdata = &arizona->pdata;
 	int ret, i;
 
-	pdata->reset = of_get_named_gpio(arizona->dev->of_node, "wlf,reset", 0);
-	if (pdata->reset == -EPROBE_DEFER) {
-		return pdata->reset;
-	} else if (pdata->reset < 0) {
-		dev_err(arizona->dev, "Reset GPIO missing/malformed: %d\n",
-			pdata->reset);
+	/* Handle old non-standard DT binding */
+	pdata->reset = devm_gpiod_get_from_of_node(arizona->dev,
+						   arizona->dev->of_node,
+						   "wlf,reset", 0,
+						   GPIOD_OUT_LOW,
+						   "arizona /RESET");
+	if (IS_ERR(pdata->reset)) {
+		ret = PTR_ERR(pdata->reset);
 
-		pdata->reset = 0;
+		/*
+		 * Reset missing will be caught when other binding is read
+		 * but all other errors imply this binding is in use but has
+		 * encountered a problem so should be handled.
+		 */
+		if (ret == -EPROBE_DEFER)
+			return ret;
+		else if (ret != -ENOENT && ret != -ENOSYS)
+			dev_err(arizona->dev, "Reset GPIO malformed: %d\n",
+				ret);
+
+		pdata->reset = NULL;
 	}
 
 	ret = of_property_read_u32_array(arizona->dev->of_node,
@@ -1050,14 +1062,19 @@ int arizona_dev_init(struct arizona *arizona)
 		goto err_early;
 	}
 
-	if (arizona->pdata.reset) {
+	if (!arizona->pdata.reset) {
 		/* Start out with /RESET low to put the chip into reset */
-		ret = devm_gpio_request_one(arizona->dev, arizona->pdata.reset,
-					    GPIOF_DIR_OUT | GPIOF_INIT_LOW,
-					    "arizona /RESET");
-		if (ret != 0) {
-			dev_err(dev, "Failed to request /RESET: %d\n", ret);
+		arizona->pdata.reset = devm_gpiod_get(arizona->dev, "reset",
+						      GPIOD_OUT_LOW);
+		if (IS_ERR(arizona->pdata.reset)) {
+			ret = PTR_ERR(arizona->pdata.reset);
+			if (ret == -EPROBE_DEFER)
 				goto err_dcvdd;
+
+			dev_err(arizona->dev,
+				"Reset GPIO missing/malformed: %d\n", ret);
+
+			arizona->pdata.reset = NULL;
 		}
 	}
 

drivers/mfd/asic3.c

@@ -31,6 +31,8 @@
 #include <linux/mfd/ds1wm.h>
 #include <linux/mfd/tmio.h>
 
+#include <linux/mmc/host.h>
+
 enum {
 	ASIC3_CLOCK_SPI,
 	ASIC3_CLOCK_OWM,
@@ -719,6 +721,7 @@ static void asic3_mmc_clk_div(struct platform_device *pdev, int state)
 
 static struct tmio_mmc_data asic3_mmc_data = {
 	.hclk           = 24576000,
+	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
 	.set_pwr        = asic3_mmc_pwr,
 	.set_clk_div    = asic3_mmc_clk_div,
 };

drivers/mfd/atmel-smc.c

@@ -12,6 +12,7 @@
  */
 
 #include <linux/mfd/syscon/atmel-smc.h>
+#include <linux/string.h>
 
 /**
  * atmel_smc_cs_conf_init - initialize a SMC CS conf

drivers/mfd/cros_ec.c

@@ -112,11 +112,15 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 
 	mutex_init(&ec_dev->lock);
 
-	cros_ec_query_all(ec_dev);
+	err = cros_ec_query_all(ec_dev);
+	if (err) {
+		dev_err(dev, "Cannot identify the EC: error %d\n", err);
+		return err;
+	}
 
 	if (ec_dev->irq) {
-		err = request_threaded_irq(ec_dev->irq, NULL, ec_irq_thread,
-					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+		err = devm_request_threaded_irq(dev, ec_dev->irq, NULL,
+				ec_irq_thread, IRQF_TRIGGER_LOW | IRQF_ONESHOT,
 				"chromeos-ec", ec_dev);
 		if (err) {
 			dev_err(dev, "Failed to request IRQ %d: %d",
@@ -131,7 +135,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 		dev_err(dev,
 			"Failed to register Embedded Controller subdevice %d\n",
 			err);
-		goto fail_mfd;
+		return err;
 	}
 
 	if (ec_dev->max_passthru) {
@@ -149,7 +153,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 			dev_err(dev,
 				"Failed to register Power Delivery subdevice %d\n",
 				err);
-			goto fail_mfd;
+			return err;
 		}
 	}
 
@@ -158,7 +162,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 		if (err) {
 			mfd_remove_devices(dev);
 			dev_err(dev, "Failed to register sub-devices\n");
-			goto fail_mfd;
+			return err;
 		}
 	}
 
@@ -173,14 +177,7 @@ int cros_ec_register(struct cros_ec_device *ec_dev)
 
 	dev_info(dev, "Chrome EC device registered\n");
 
-	cros_ec_acpi_install_gpe_handler(dev);
-
 	return 0;
-
-fail_mfd:
-	if (ec_dev->irq)
-		free_irq(ec_dev->irq, ec_dev);
-	return err;
 }
 EXPORT_SYMBOL(cros_ec_register);
 
@@ -188,11 +185,6 @@ int cros_ec_remove(struct cros_ec_device *ec_dev)
 {
 	mfd_remove_devices(ec_dev->dev);
 
-	cros_ec_acpi_remove_gpe_handler();
-
-	if (ec_dev->irq)
-		free_irq(ec_dev->irq, ec_dev);
-
 	return 0;
 }
 EXPORT_SYMBOL(cros_ec_remove);
@@ -204,14 +196,9 @@ int cros_ec_suspend(struct cros_ec_device *ec_dev)
 	int ret;
 	u8 sleep_event;
 
-	if (!IS_ENABLED(CONFIG_ACPI) || pm_suspend_via_firmware()) {
-		sleep_event = HOST_SLEEP_EVENT_S3_SUSPEND;
-	} else {
-		sleep_event = HOST_SLEEP_EVENT_S0IX_SUSPEND;
-
-		/* Clearing the GPE status for any pending event */
-		cros_ec_acpi_clear_gpe();
-	}
+	sleep_event = (!IS_ENABLED(CONFIG_ACPI) || pm_suspend_via_firmware()) ?
+		      HOST_SLEEP_EVENT_S3_SUSPEND :
+		      HOST_SLEEP_EVENT_S0IX_SUSPEND;
 
 	ret = cros_ec_sleep_event(ec_dev, sleep_event);
 	if (ret < 0)

drivers/mfd/cros_ec_acpi_gpe.c

-/*
- * ChromeOS EC multi-function device
- *
- * Copyright (C) 2017 Google, Inc
- *
- * This software is licensed under the terms of the GNU General Public
- * License version 2, as published by the Free Software Foundation, and
- * may be copied, distributed, and modified under those terms.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * The ChromeOS EC multi function device is used to mux all the requests
- * to the EC device for its multiple features: keyboard controller,
- * battery charging and regulator control, firmware update.
- */
-#include <linux/acpi.h>
-
-#define ACPI_LID_DEVICE      "LID0"
-
-static int ec_wake_gpe = -EINVAL;
-
-/*
- * This handler indicates to ACPI core that this GPE should stay enabled for
- * lid to work in suspend to idle path.
- */
-static u32 cros_ec_gpe_handler(acpi_handle gpe_device, u32 gpe_number,
-			       void *data)
-{
-	return ACPI_INTERRUPT_HANDLED | ACPI_REENABLE_GPE;
-}
-
-/*
- * Get ACPI GPE for LID0 device.
- */
-static int cros_ec_get_ec_wake_gpe(struct device *dev)
-{
-	struct acpi_device *cros_acpi_dev;
-	struct acpi_device *adev;
-	acpi_handle handle;
-	acpi_status status;
-	int ret;
-
-	cros_acpi_dev = ACPI_COMPANION(dev);
-
-	if (!cros_acpi_dev || !cros_acpi_dev->parent ||
-	   !cros_acpi_dev->parent->handle)
-		return -EINVAL;
-
-	status = acpi_get_handle(cros_acpi_dev->parent->handle, ACPI_LID_DEVICE,
-				 &handle);
-	if (ACPI_FAILURE(status))
-		return -EINVAL;
-
-	ret = acpi_bus_get_device(handle, &adev);
-	if (ret)
-		return ret;
-
-	return adev->wakeup.gpe_number;
-}
-
-int cros_ec_acpi_install_gpe_handler(struct device *dev)
-{
-	acpi_status status;
-
-	ec_wake_gpe = cros_ec_get_ec_wake_gpe(dev);
-
-	if (ec_wake_gpe < 0)
-		return ec_wake_gpe;
-
-	status = acpi_install_gpe_handler(NULL, ec_wake_gpe,
-					  ACPI_GPE_EDGE_TRIGGERED,
-					  &cros_ec_gpe_handler, NULL);
-	if (ACPI_FAILURE(status))
-		return -ENODEV;
-
-	dev_info(dev, "Initialized, GPE = 0x%x\n", ec_wake_gpe);
-
-	return 0;
-}
-
-void cros_ec_acpi_remove_gpe_handler(void)
-{
-	acpi_status status;
-
-	if (ec_wake_gpe < 0)
-		return;
-
-	status = acpi_remove_gpe_handler(NULL, ec_wake_gpe,
-						 &cros_ec_gpe_handler);
-	if (ACPI_FAILURE(status))
-		pr_err("failed to remove gpe handler\n");
-}
-
-void cros_ec_acpi_clear_gpe(void)
-{
-	if (ec_wake_gpe < 0)
-		return;
-
-	acpi_clear_gpe(NULL, ec_wake_gpe);
-}

drivers/mfd/cros_ec_dev.c

@@ -113,9 +113,9 @@ static int cros_ec_check_features(struct cros_ec_dev *ec, int feature)
 			dev_warn(ec->dev, "cannot get EC features: %d/%d\n",
 				 ret, msg->result);
 			memset(ec->features, 0, sizeof(ec->features));
-		}
-
+		} else {
 			memcpy(ec->features, msg->data, sizeof(ec->features));
+		}
 
 		dev_dbg(ec->dev, "EC features %08x %08x\n",
 			ec->features[0], ec->features[1]);
@@ -262,13 +262,6 @@ static const struct file_operations fops = {
 #endif
 };
 
-static void __remove(struct device *dev)
-{
-	struct cros_ec_dev *ec = container_of(dev, struct cros_ec_dev,
-					      class_dev);
-	kfree(ec);
-}
-
 static void cros_ec_sensors_register(struct cros_ec_dev *ec)
 {
 	/*
@@ -383,12 +376,16 @@ static void cros_ec_sensors_register(struct cros_ec_dev *ec)
 	kfree(msg);
 }
 
+static const struct mfd_cell cros_ec_rtc_cells[] = {
+	{ .name = "cros-ec-rtc" }
+};
+
 static int ec_device_probe(struct platform_device *pdev)
 {
 	int retval = -ENOMEM;
 	struct device *dev = &pdev->dev;
 	struct cros_ec_platform *ec_platform = dev_get_platdata(dev);
-	struct cros_ec_dev *ec = kzalloc(sizeof(*ec), GFP_KERNEL);
+	struct cros_ec_dev *ec = devm_kzalloc(dev, sizeof(*ec), GFP_KERNEL);
 
 	if (!ec)
 		return retval;
@@ -410,7 +407,6 @@ static int ec_device_probe(struct platform_device *pdev)
 	ec->class_dev.devt = MKDEV(ec_major, pdev->id);
 	ec->class_dev.class = &cros_class;
 	ec->class_dev.parent = dev;
-	ec->class_dev.release = __remove;
 
 	retval = dev_set_name(&ec->class_dev, "%s", ec_platform->ec_name);
 	if (retval) {
@@ -422,6 +418,18 @@ static int ec_device_probe(struct platform_device *pdev)
 	if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE))
 		cros_ec_sensors_register(ec);
 
+	/* Check whether this EC instance has RTC host command support */
+	if (cros_ec_check_features(ec, EC_FEATURE_RTC)) {
+		retval = mfd_add_devices(ec->dev, PLATFORM_DEVID_AUTO,
+					 cros_ec_rtc_cells,
+					 ARRAY_SIZE(cros_ec_rtc_cells),
+					 NULL, 0, NULL);
+		if (retval)
+			dev_err(ec->dev,
+				"failed to add cros-ec-rtc device: %d\n",
+				retval);
+	}
+
 	/* Take control of the lightbar from the EC. */
 	lb_manual_suspend_ctrl(ec, 1);
 
@@ -456,9 +464,17 @@ static int ec_device_remove(struct platform_device *pdev)
 	return 0;
 }
 
+static void ec_device_shutdown(struct platform_device *pdev)
+{
+	struct cros_ec_dev *ec = dev_get_drvdata(&pdev->dev);
+
+	/* Be sure to clear up debugfs delayed works */
+	cros_ec_debugfs_remove(ec);
+}
+
 static const struct platform_device_id cros_ec_id[] = {
 	{ DRV_NAME, 0 },
-	{ /* sentinel */ },
+	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(platform, cros_ec_id);
 
@@ -466,6 +482,8 @@ static __maybe_unused int ec_device_suspend(struct device *dev)
 {
 	struct cros_ec_dev *ec = dev_get_drvdata(dev);
 
+	cros_ec_debugfs_suspend(ec);
+
 	lb_suspend(ec);
 
 	return 0;
@@ -475,6 +493,8 @@ static __maybe_unused int ec_device_resume(struct device *dev)
 {
 	struct cros_ec_dev *ec = dev_get_drvdata(dev);
 
+	cros_ec_debugfs_resume(ec);
+
 	lb_resume(ec);
 
 	return 0;
@@ -494,6 +514,7 @@ static struct platform_driver cros_ec_dev_driver = {
 	},
 	.probe = ec_device_probe,
 	.remove = ec_device_remove,
+	.shutdown = ec_device_shutdown,
 };
 
 static int __init cros_ec_dev_init(void)

drivers/mfd/cros_ec_i2c.c

@@ -13,6 +13,7 @@
  * GNU General Public License for more details.
  */
 
+#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -341,14 +342,17 @@ static int cros_ec_i2c_resume(struct device *dev)
 }
 #endif
 
-static SIMPLE_DEV_PM_OPS(cros_ec_i2c_pm_ops, cros_ec_i2c_suspend,
-			  cros_ec_i2c_resume);
+static const struct dev_pm_ops cros_ec_i2c_pm_ops = {
+	SET_LATE_SYSTEM_SLEEP_PM_OPS(cros_ec_i2c_suspend, cros_ec_i2c_resume)
+};
 
+#ifdef CONFIG_OF
 static const struct of_device_id cros_ec_i2c_of_match[] = {
 	{ .compatible = "google,cros-ec-i2c", },
 	{ /* sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, cros_ec_i2c_of_match);
+#endif
 
 static const struct i2c_device_id cros_ec_i2c_id[] = {
 	{ "cros-ec-i2c", 0 },
@@ -356,9 +360,18 @@ static const struct i2c_device_id cros_ec_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, cros_ec_i2c_id);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cros_ec_i2c_acpi_id[] = {
+	{ "GOOG0008", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(acpi, cros_ec_i2c_acpi_id);
+#endif
+
 static struct i2c_driver cros_ec_driver = {
 	.driver	= {
 		.name	= "cros-ec-i2c",
+		.acpi_match_table = ACPI_PTR(cros_ec_i2c_acpi_id),
 		.of_match_table = of_match_ptr(cros_ec_i2c_of_match),
 		.pm	= &cros_ec_i2c_pm_ops,
 	},

drivers/mfd/htc-i2cpld.c

@@ -479,10 +479,8 @@ static int htcpld_setup_chips(struct platform_device *pdev)
 	htcpld->nchips = pdata->num_chip;
 	htcpld->chip = devm_kzalloc(dev, sizeof(struct htcpld_chip) * htcpld->nchips,
 				    GFP_KERNEL);
-	if (!htcpld->chip) {
-		dev_warn(dev, "Unable to allocate memory for chips\n");
+	if (!htcpld->chip)
 		return -ENOMEM;
-	}
 
 	/* Add the chips as best we can */
 	for (i = 0; i < htcpld->nchips; i++) {

drivers/mfd/intel-lpss-pci.c

@@ -124,6 +124,11 @@ static const struct intel_lpss_platform_info apl_i2c_info = {
 	.properties = apl_i2c_properties,
 };
 
+static const struct intel_lpss_platform_info cnl_i2c_info = {
+	.clk_rate = 216000000,
+	.properties = spt_i2c_properties,
+};
+
 static const struct pci_device_id intel_lpss_pci_ids[] = {
 	/* BXT A-Step */
 	{ PCI_VDEVICE(INTEL, 0x0aac), (kernel_ulong_t)&bxt_i2c_info },
@@ -207,13 +212,13 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
 	{ PCI_VDEVICE(INTEL, 0x9daa), (kernel_ulong_t)&spt_info },
 	{ PCI_VDEVICE(INTEL, 0x9dab), (kernel_ulong_t)&spt_info },
 	{ PCI_VDEVICE(INTEL, 0x9dfb), (kernel_ulong_t)&spt_info },
-	{ PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&spt_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9dc5), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9dc6), (kernel_ulong_t)&cnl_i2c_info },
 	{ PCI_VDEVICE(INTEL, 0x9dc7), (kernel_ulong_t)&spt_uart_info },
-	{ PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&spt_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9de8), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9de9), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9dea), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0x9deb), (kernel_ulong_t)&cnl_i2c_info },
 	/* SPT-H */
 	{ PCI_VDEVICE(INTEL, 0xa127), (kernel_ulong_t)&spt_uart_info },
 	{ PCI_VDEVICE(INTEL, 0xa128), (kernel_ulong_t)&spt_uart_info },
@@ -240,10 +245,10 @@ static const struct pci_device_id intel_lpss_pci_ids[] = {
 	{ PCI_VDEVICE(INTEL, 0xa32b), (kernel_ulong_t)&spt_info },
 	{ PCI_VDEVICE(INTEL, 0xa37b), (kernel_ulong_t)&spt_info },
 	{ PCI_VDEVICE(INTEL, 0xa347), (kernel_ulong_t)&spt_uart_info },
-	{ PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&spt_i2c_info },
-	{ PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&spt_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0xa368), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0xa369), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0xa36a), (kernel_ulong_t)&cnl_i2c_info },
+	{ PCI_VDEVICE(INTEL, 0xa36b), (kernel_ulong_t)&cnl_i2c_info },
 	{ }
 };
 MODULE_DEVICE_TABLE(pci, intel_lpss_pci_ids);

drivers/mfd/intel-lpss.c

@@ -40,8 +40,8 @@
 
 /* Offsets from lpss->priv */
 #define LPSS_PRIV_RESETS		0x04
-#define LPSS_PRIV_RESETS_FUNC		BIT(2)
-#define LPSS_PRIV_RESETS_IDMA		0x3
+#define LPSS_PRIV_RESETS_IDMA		BIT(2)
+#define LPSS_PRIV_RESETS_FUNC		0x3
 
 #define LPSS_PRIV_ACTIVELTR		0x10
 #define LPSS_PRIV_IDLELTR		0x14
@@ -275,11 +275,11 @@ static void intel_lpss_init_dev(const struct intel_lpss *lpss)
 
 	intel_lpss_deassert_reset(lpss);
 
+	intel_lpss_set_remap_addr(lpss);
+
 	if (!intel_lpss_has_idma(lpss))
 		return;
 
-	intel_lpss_set_remap_addr(lpss);
-
 	/* Make sure that SPI multiblock DMA transfers are re-enabled */
 	if (lpss->type == LPSS_DEV_SPI)
 		writel(value, lpss->priv + LPSS_PRIV_SSP_REG);

drivers/mfd/janz-cmodio.c

@@ -183,10 +183,8 @@ static int cmodio_pci_probe(struct pci_dev *dev,
 	int ret;
 
 	priv = devm_kzalloc(&dev->dev, sizeof(*priv), GFP_KERNEL);
-	if (!priv) {
-		dev_err(&dev->dev, "unable to allocate private data\n");
+	if (!priv)
 		return -ENOMEM;
-	}
 
 	pci_set_drvdata(dev, priv);
 	priv->pdev = dev;

drivers/mfd/jz4740-adc.c

@@ -212,10 +212,8 @@ static int jz4740_adc_probe(struct platform_device *pdev)
 	int irq_base;
 
 	adc = devm_kzalloc(&pdev->dev, sizeof(*adc), GFP_KERNEL);
-	if (!adc) {
-		dev_err(&pdev->dev, "Failed to allocate driver structure\n");
+	if (!adc)
 		return -ENOMEM;
-	}
 
 	adc->irq = platform_get_irq(pdev, 0);
 	if (adc->irq < 0) {

drivers/mfd/max8997.c

@@ -148,10 +148,8 @@ static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
 	struct max8997_platform_data *pd;
 
 	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
-	if (!pd) {
-		dev_err(dev, "could not allocate memory for pdata\n");
+	if (!pd)
 		return ERR_PTR(-ENOMEM);
-	}
 
 	pd->ono = irq_of_parse_and_map(dev->of_node, 1);
 

drivers/mfd/mt6397-core.c

@@ -43,6 +43,16 @@ static const struct resource mt6397_rtc_resources[] = {
 	},
 };
 
+static const struct resource mt6323_keys_resources[] = {
+	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_PWRKEY),
+	DEFINE_RES_IRQ(MT6323_IRQ_STATUS_FCHRKEY),
+};
+
+static const struct resource mt6397_keys_resources[] = {
+	DEFINE_RES_IRQ(MT6397_IRQ_PWRKEY),
+	DEFINE_RES_IRQ(MT6397_IRQ_HOMEKEY),
+};
+
 static const struct mfd_cell mt6323_devs[] = {
 	{
 		.name = "mt6323-regulator",
@@ -50,6 +60,11 @@ static const struct mfd_cell mt6323_devs[] = {
 	}, {
 		.name = "mt6323-led",
 		.of_compatible = "mediatek,mt6323-led"
+	}, {
+		.name = "mtk-pmic-keys",
+		.num_resources = ARRAY_SIZE(mt6323_keys_resources),
+		.resources = mt6323_keys_resources,
+		.of_compatible = "mediatek,mt6323-keys"
 	},
 };
 
@@ -71,7 +86,12 @@ static const struct mfd_cell mt6397_devs[] = {
 	}, {
 		.name = "mt6397-pinctrl",
 		.of_compatible = "mediatek,mt6397-pinctrl",
-	},
+	}, {
+		.name = "mtk-pmic-keys",
+		.num_resources = ARRAY_SIZE(mt6397_keys_resources),
+		.resources = mt6397_keys_resources,
+		.of_compatible = "mediatek,mt6397-keys"
+	}
 };
 
 static void mt6397_irq_lock(struct irq_data *data)
@@ -289,7 +309,7 @@ static int mt6397_probe(struct platform_device *pdev)
 
 		ret = devm_mfd_add_devices(&pdev->dev, -1, mt6323_devs,
 					   ARRAY_SIZE(mt6323_devs), NULL,
-					   0, NULL);
+					   0, pmic->irq_domain);
 		break;
 
 	case MT6397_CID_CODE:
@@ -304,7 +324,7 @@ static int mt6397_probe(struct platform_device *pdev)
 
 		ret = devm_mfd_add_devices(&pdev->dev, -1, mt6397_devs,
 					   ARRAY_SIZE(mt6397_devs), NULL,
-					   0, NULL);
+					   0, pmic->irq_domain);
 		break;
 
 	default:

drivers/mfd/omap-usb-host.c

@@ -153,27 +153,6 @@ static const char * const port_modes[] = {
 	[OMAP_OHCI_PORT_MODE_TLL_2PIN_DPDM]	= "ohci-tll-2pin-dpdm",
 };
 
-/**
- * omap_usbhs_get_dt_port_mode - Get the 'enum usbhs_omap_port_mode'
- * from the port mode string.
- * @mode: The port mode string, usually obtained from device tree.
- *
- * The function returns the 'enum usbhs_omap_port_mode' that matches the
- * provided port mode string as per the port_modes table.
- * If no match is found it returns -ENODEV
- */
-static int omap_usbhs_get_dt_port_mode(const char *mode)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(port_modes); i++) {
-		if (!strcmp(mode, port_modes[i]))
-			return i;
-	}
-
-	return -ENODEV;
-}
-
 static struct platform_device *omap_usbhs_alloc_child(const char *name,
 			struct resource	*res, int num_resources, void *pdata,
 			size_t pdata_size, struct device *dev)
@@ -529,7 +508,8 @@ static int usbhs_omap_get_dt_pdata(struct device *dev,
 		if (ret < 0)
 			continue;
 
-		ret = omap_usbhs_get_dt_port_mode(mode);
+		/* get 'enum usbhs_omap_port_mode' from port mode string */
+		ret = match_string(port_modes, ARRAY_SIZE(port_modes), mode);
 		if (ret < 0) {
 			dev_warn(dev, "Invalid port%d-mode \"%s\" in device tree\n",
 					i, mode);

drivers/mfd/omap-usb-tll.c

@@ -108,9 +108,9 @@
 					 (x) != OMAP_EHCI_PORT_MODE_PHY)
 
 struct usbtll_omap {
-	int					nch;	/* num. of channels */
-	struct clk				**ch_clk;
 	void __iomem	*base;
+	int		nch;		/* num. of channels */
+	struct clk	*ch_clk[0];	/* must be the last member */
 };
 
 /*-------------------------------------------------------------------------*/
@@ -216,53 +216,49 @@ static int usbtll_omap_probe(struct platform_device *pdev)
 	struct device				*dev =  &pdev->dev;
 	struct resource				*res;
 	struct usbtll_omap			*tll;
-	int					ret = 0;
-	int					i, ver;
+	void __iomem				*base;
+	int					i, nch, ver;
 
 	dev_dbg(dev, "starting TI HSUSB TLL Controller\n");
 
-	tll = devm_kzalloc(dev, sizeof(struct usbtll_omap), GFP_KERNEL);
-	if (!tll) {
-		dev_err(dev, "Memory allocation failed\n");
-		return -ENOMEM;
-	}
-
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	tll->base = devm_ioremap_resource(dev, res);
-	if (IS_ERR(tll->base))
-		return PTR_ERR(tll->base);
+	base = devm_ioremap_resource(dev, res);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
 
-	platform_set_drvdata(pdev, tll);
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);
 
-	ver =  usbtll_read(tll->base, OMAP_USBTLL_REVISION);
+	ver = usbtll_read(base, OMAP_USBTLL_REVISION);
 	switch (ver) {
 	case OMAP_USBTLL_REV1:
 	case OMAP_USBTLL_REV4:
-		tll->nch = OMAP_TLL_CHANNEL_COUNT;
+		nch = OMAP_TLL_CHANNEL_COUNT;
 		break;
 	case OMAP_USBTLL_REV2:
 	case OMAP_USBTLL_REV3:
-		tll->nch = OMAP_REV2_TLL_CHANNEL_COUNT;
+		nch = OMAP_REV2_TLL_CHANNEL_COUNT;
 		break;
 	default:
-		tll->nch = OMAP_TLL_CHANNEL_COUNT;
-		dev_dbg(dev,
-		 "USB TLL Rev : 0x%x not recognized, assuming %d channels\n",
-			ver, tll->nch);
+		nch = OMAP_TLL_CHANNEL_COUNT;
+		dev_dbg(dev, "rev 0x%x not recognized, assuming %d channels\n",
+			ver, nch);
 		break;
 	}
 
-	tll->ch_clk = devm_kzalloc(dev, sizeof(struct clk *) * tll->nch,
+	tll = devm_kzalloc(dev, sizeof(*tll) + sizeof(tll->ch_clk[nch]),
 			   GFP_KERNEL);
-	if (!tll->ch_clk) {
-		ret = -ENOMEM;
-		dev_err(dev, "Couldn't allocate memory for channel clocks\n");
-		goto err_clk_alloc;
+	if (!tll) {
+		pm_runtime_put_sync(dev);
+		pm_runtime_disable(dev);
+		return -ENOMEM;
 	}
 
-	for (i = 0; i < tll->nch; i++) {
+	tll->base = base;
+	tll->nch = nch;
+	platform_set_drvdata(pdev, tll);
+
+	for (i = 0; i < nch; i++) {
 		char clkname[] = "usb_tll_hs_usb_chx_clk";
 
 		snprintf(clkname, sizeof(clkname),
@@ -282,12 +278,6 @@ static int usbtll_omap_probe(struct platform_device *pdev)
 	spin_unlock(&tll_lock);
 
 	return 0;
-
-err_clk_alloc:
-	pm_runtime_put_sync(dev);
-	pm_runtime_disable(dev);
-
-	return ret;
 }
 
 /**

drivers/mfd/pcf50633-core.c

@@ -242,8 +242,10 @@ static int pcf50633_probe(struct i2c_client *client,
 
 	for (i = 0; i < PCF50633_NUM_REGULATORS; i++) {
 		pdev = platform_device_alloc("pcf50633-regulator", i);
-		if (!pdev)
-			return -ENOMEM;
+		if (!pdev) {
+			ret = -ENOMEM;
+			goto err2;
+		}
 
 		pdev->dev.parent = pcf->dev;
 		ret = platform_device_add_data(pdev, &pdata->reg_init_data[i],
@@ -269,6 +271,7 @@ static int pcf50633_probe(struct i2c_client *client,
 
 err:
 	platform_device_put(pdev);
+err2:
 	for (j = 0; j < i; j++)
 		platform_device_put(pcf->regulator_pdev[j]);
 

drivers/mfd/qcom-spmi-pmic.c

@@ -39,6 +39,9 @@
 #define PM8916_SUBTYPE		0x0b
 #define PM8004_SUBTYPE		0x0c
 #define PM8909_SUBTYPE		0x0d
+#define PM8998_SUBTYPE		0x14
+#define PMI8998_SUBTYPE		0x15
+#define PM8005_SUBTYPE		0x18
 
 static const struct of_device_id pmic_spmi_id_table[] = {
 	{ .compatible = "qcom,spmi-pmic", .data = (void *)COMMON_SUBTYPE },
@@ -55,6 +58,9 @@ static const struct of_device_id pmic_spmi_id_table[] = {
 	{ .compatible = "qcom,pm8916",    .data = (void *)PM8916_SUBTYPE },
 	{ .compatible = "qcom,pm8004",    .data = (void *)PM8004_SUBTYPE },
 	{ .compatible = "qcom,pm8909",    .data = (void *)PM8909_SUBTYPE },
+	{ .compatible = "qcom,pm8998",    .data = (void *)PM8998_SUBTYPE },
+	{ .compatible = "qcom,pmi8998",   .data = (void *)PMI8998_SUBTYPE },
+	{ .compatible = "qcom,pm8005",    .data = (void *)PM8005_SUBTYPE },
 	{ }
 };
 

drivers/mfd/rave-sp.c

@@ -45,7 +45,9 @@
 #define RAVE_SP_DLE			0x10
 
 #define RAVE_SP_MAX_DATA_SIZE		64
-#define RAVE_SP_CHECKSUM_SIZE		2  /* Worst case scenario on RDU2 */
+#define RAVE_SP_CHECKSUM_8B2C		1
+#define RAVE_SP_CHECKSUM_CCITT		2
+#define RAVE_SP_CHECKSUM_SIZE		RAVE_SP_CHECKSUM_CCITT
 /*
  * We don't store STX, ETX and unescaped bytes, so Rx is only
  * DATA + CSUM
@@ -160,6 +162,8 @@ struct rave_sp_variant {
  * @variant:			Device variant specific information
  * @event_notifier_list:	Input event notification chain
  *
+ * @part_number_firmware:	Firmware version
+ * @part_number_bootloader:	Bootloader version
  */
 struct rave_sp {
 	struct serdev_device *serdev;
@@ -171,8 +175,40 @@ struct rave_sp {
 
 	const struct rave_sp_variant *variant;
 	struct blocking_notifier_head event_notifier_list;
+
+	const char *part_number_firmware;
+	const char *part_number_bootloader;
 };
 
+struct rave_sp_version {
+	u8     hardware;
+	__le16 major;
+	u8     minor;
+	u8     letter[2];
+} __packed;
+
+struct rave_sp_status {
+	struct rave_sp_version bootloader_version;
+	struct rave_sp_version firmware_version;
+	u16 rdu_eeprom_flag;
+	u16 dds_eeprom_flag;
+	u8  pic_flag;
+	u8  orientation;
+	u32 etc;
+	s16 temp[2];
+	u8  backlight_current[3];
+	u8  dip_switch;
+	u8  host_interrupt;
+	u16 voltage_28;
+	u8  i2c_device_status;
+	u8  power_status;
+	u8  general_status;
+	u8  deprecated1;
+	u8  power_led_status;
+	u8  deprecated2;
+	u8  periph_power_shutoff;
+} __packed;
+
 static bool rave_sp_id_is_event(u8 code)
 {
 	return (code & 0xF0) == RAVE_SP_EVNT_BASE;
@@ -275,7 +311,7 @@ static int rave_sp_write(struct rave_sp *sp, const u8 *data, u8 data_size)
 
 	length = dest - frame;
 
-	print_hex_dump(KERN_DEBUG, "rave-sp tx: ", DUMP_PREFIX_NONE,
+	print_hex_dump_debug("rave-sp tx: ", DUMP_PREFIX_NONE,
 			     16, 1, frame, length, false);
 
 	return serdev_device_write(sp->serdev, frame, length, HZ);
@@ -415,9 +451,14 @@ static void rave_sp_receive_frame(struct rave_sp *sp,
 	const size_t payload_length  = length - checksum_length;
 	const u8 *crc_reported       = &data[payload_length];
 	struct device *dev           = &sp->serdev->dev;
-	u8 crc_calculated[checksum_length];
+	u8 crc_calculated[RAVE_SP_CHECKSUM_SIZE];
+
+	if (unlikely(checksum_length > sizeof(crc_calculated))) {
+		dev_warn(dev, "Checksum too long, dropping\n");
+		return;
+	}
 
-	print_hex_dump(KERN_DEBUG, "rave-sp rx: ", DUMP_PREFIX_NONE,
+	print_hex_dump_debug("rave-sp rx: ", DUMP_PREFIX_NONE,
 			     16, 1, data, length, false);
 
 	if (unlikely(length <= checksum_length)) {
@@ -512,8 +553,6 @@ static int rave_sp_receive_buf(struct serdev_device *serdev,
 			/* FALLTHROUGH */
 
 		case RAVE_SP_EXPECT_ESCAPED_DATA:
-			deframer->data[deframer->length++] = byte;
-
 			if (deframer->length == sizeof(deframer->data)) {
 				dev_warn(dev, "Bad frame: Too long\n");
 				/*
@@ -528,6 +567,8 @@ static int rave_sp_receive_buf(struct serdev_device *serdev,
 				goto reset_framer;
 			}
 
+			deframer->data[deframer->length++] = byte;
+
 			/*
 			 * We've extracted out special byte, now we
 			 * can go back to regular data collecting
@@ -609,6 +650,52 @@ static int rave_sp_default_cmd_translate(enum rave_sp_command command)
 	}
 }
 
+static const char *devm_rave_sp_version(struct device *dev,
+					struct rave_sp_version *version)
+{
+	/*
+	 * NOTE: The format string below uses %02d to display u16
+	 * intentionally for the sake of backwards compatibility with
+	 * legacy software.
+	 */
+	return devm_kasprintf(dev, GFP_KERNEL, "%02d%02d%02d.%c%c\n",
+			      version->hardware,
+			      le16_to_cpu(version->major),
+			      version->minor,
+			      version->letter[0],
+			      version->letter[1]);
+}
+
+static int rave_sp_get_status(struct rave_sp *sp)
+{
+	struct device *dev = &sp->serdev->dev;
+	u8 cmd[] = {
+		[0] = RAVE_SP_CMD_STATUS,
+		[1] = 0
+	};
+	struct rave_sp_status status;
+	const char *version;
+	int ret;
+
+	ret = rave_sp_exec(sp, cmd, sizeof(cmd), &status, sizeof(status));
+	if (ret)
+		return ret;
+
+	version = devm_rave_sp_version(dev, &status.firmware_version);
+	if (!version)
+		return -ENOMEM;
+
+	sp->part_number_firmware = version;
+
+	version = devm_rave_sp_version(dev, &status.bootloader_version);
+	if (!version)
+		return -ENOMEM;
+
+	sp->part_number_bootloader = version;
+
+	return 0;
+}
+
 static const struct rave_sp_checksum rave_sp_checksum_8b2c = {
 	.length     = 1,
 	.subroutine = csum_8b2c,
@@ -657,6 +744,7 @@ static const struct serdev_device_ops rave_sp_serdev_device_ops = {
 static int rave_sp_probe(struct serdev_device *serdev)
 {
 	struct device *dev = &serdev->dev;
+	const char *unknown = "unknown\n";
 	struct rave_sp *sp;
 	u32 baud;
 	int ret;
@@ -689,6 +777,20 @@ static int rave_sp_probe(struct serdev_device *serdev)
 
 	serdev_device_set_baudrate(serdev, baud);
 
+	ret = rave_sp_get_status(sp);
+	if (ret) {
+		dev_warn(dev, "Failed to get firmware status: %d\n", ret);
+		sp->part_number_firmware   = unknown;
+		sp->part_number_bootloader = unknown;
+	}
+
+	/*
+	 * Those strings already have a \n embedded, so there's no
+	 * need to have one in format string.
+	 */
+	dev_info(dev, "Firmware version: %s",   sp->part_number_firmware);
+	dev_info(dev, "Bootloader version: %s", sp->part_number_bootloader);
+
 	return devm_of_platform_populate(dev);
 }
 

drivers/mfd/rc5t583.c

@@ -258,11 +258,9 @@ static int rc5t583_i2c_probe(struct i2c_client *i2c,
 		return -EINVAL;
 	}
 
-	rc5t583 = devm_kzalloc(&i2c->dev, sizeof(struct rc5t583), GFP_KERNEL);
-	if (!rc5t583) {
-		dev_err(&i2c->dev, "Memory allocation failed\n");
+	rc5t583 = devm_kzalloc(&i2c->dev, sizeof(*rc5t583), GFP_KERNEL);
+	if (!rc5t583)
 		return -ENOMEM;
-	}
 
 	rc5t583->dev = &i2c->dev;
 	i2c_set_clientdata(i2c, rc5t583);

drivers/mfd/si476x-i2c.c

@@ -697,11 +697,9 @@ static int si476x_core_probe(struct i2c_client *client,
 	int              cell_num;
 
 	core = devm_kzalloc(&client->dev, sizeof(*core), GFP_KERNEL);
-	if (!core) {
-		dev_err(&client->dev,
-			"failed to allocate 'struct si476x_core'\n");
+	if (!core)
 		return -ENOMEM;
-	}
+
 	core->client = client;
 
 	core->regmap = devm_regmap_init_si476x(core);

drivers/mfd/sm501.c

@@ -1050,13 +1050,13 @@ static int sm501_register_gpio(struct sm501_devdata *sm)
 	spin_lock_init(&gpio->lock);
 
 	gpio->regs_res = request_mem_region(iobase, 0x20, "sm501-gpio");
-	if (gpio->regs_res == NULL) {
+	if (!gpio->regs_res) {
 		dev_err(sm->dev, "gpio: failed to request region\n");
 		return -ENXIO;
 	}
 
 	gpio->regs = ioremap(iobase, 0x20);
-	if (gpio->regs == NULL) {
+	if (!gpio->regs) {
 		dev_err(sm->dev, "gpio: failed to remap registers\n");
 		ret = -ENXIO;
 		goto err_claimed;
@@ -1358,7 +1358,7 @@ static int sm501_init_dev(struct sm501_devdata *sm)
 			sm501_register_gpio(sm);
 	}
 
-	if (pdata && pdata->gpio_i2c != NULL && pdata->gpio_i2c_nr > 0) {
+	if (pdata && pdata->gpio_i2c && pdata->gpio_i2c_nr > 0) {
 		if (!sm501_gpio_isregistered(sm))
 			dev_err(sm->dev, "no gpio available for i2c gpio.\n");
 		else
@@ -1383,9 +1383,8 @@ static int sm501_plat_probe(struct platform_device *dev)
 	struct sm501_devdata *sm;
 	int ret;
 
-	sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
-	if (sm == NULL) {
-		dev_err(&dev->dev, "no memory for device data\n");
+	sm = kzalloc(sizeof(*sm), GFP_KERNEL);
+	if (!sm) {
 		ret = -ENOMEM;
 		goto err1;
 	}
@@ -1403,8 +1402,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 
 	sm->io_res = platform_get_resource(dev, IORESOURCE_MEM, 1);
 	sm->mem_res = platform_get_resource(dev, IORESOURCE_MEM, 0);
-
-	if (sm->io_res == NULL || sm->mem_res == NULL) {
+	if (!sm->io_res || !sm->mem_res) {
 		dev_err(&dev->dev, "failed to get IO resource\n");
 		ret = -ENOENT;
 		goto err_res;
@@ -1412,8 +1410,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 
 	sm->regs_claim = request_mem_region(sm->io_res->start,
 					    0x100, "sm501");
-
-	if (sm->regs_claim == NULL) {
+	if (!sm->regs_claim) {
 		dev_err(&dev->dev, "cannot claim registers\n");
 		ret = -EBUSY;
 		goto err_res;
@@ -1422,8 +1419,7 @@ static int sm501_plat_probe(struct platform_device *dev)
 	platform_set_drvdata(dev, sm);
 
 	sm->regs = ioremap(sm->io_res->start, resource_size(sm->io_res));
-
-	if (sm->regs == NULL) {
+	if (!sm->regs) {
 		dev_err(&dev->dev, "cannot remap registers\n");
 		ret = -EIO;
 		goto err_claim;
@@ -1449,7 +1445,7 @@ static void sm501_set_power(struct sm501_devdata *sm, int on)
 {
 	struct sm501_platdata *pd = sm->platdata;
 
-	if (pd == NULL)
+	if (!pd)
 		return;
 
 	if (pd->get_power) {
@@ -1573,9 +1569,8 @@ static int sm501_pci_probe(struct pci_dev *dev,
 	struct sm501_devdata *sm;
 	int err;
 
-	sm = kzalloc(sizeof(struct sm501_devdata), GFP_KERNEL);
-	if (sm == NULL) {
-		dev_err(&dev->dev, "no memory for device data\n");
+	sm = kzalloc(sizeof(*sm), GFP_KERNEL);
+	if (!sm) {
 		err = -ENOMEM;
 		goto err1;
 	}
@@ -1626,15 +1621,14 @@ static int sm501_pci_probe(struct pci_dev *dev,
 
 	sm->regs_claim = request_mem_region(sm->io_res->start,
 					    0x100, "sm501");
-	if (sm->regs_claim == NULL) {
+	if (!sm->regs_claim) {
 		dev_err(&dev->dev, "cannot claim registers\n");
 		err= -EBUSY;
 		goto err3;
 	}
 
 	sm->regs = pci_ioremap_bar(dev, 1);
-
-	if (sm->regs == NULL) {
+	if (!sm->regs) {
 		dev_err(&dev->dev, "cannot remap registers\n");
 		err = -EIO;
 		goto err4;

drivers/mfd/smsc-ece1099.c

@@ -37,12 +37,9 @@ static int smsc_i2c_probe(struct i2c_client *i2c,
 	int devid, rev, venid_l, venid_h;
 	int ret;
 
-	smsc = devm_kzalloc(&i2c->dev, sizeof(struct smsc),
-				GFP_KERNEL);
-	if (!smsc) {
-		dev_err(&i2c->dev, "smsc mfd driver memory allocation failed\n");
+	smsc = devm_kzalloc(&i2c->dev, sizeof(*smsc), GFP_KERNEL);
+	if (!smsc)
 		return -ENOMEM;
-	}
 
 	smsc->regmap = devm_regmap_init_i2c(i2c, &smsc_regmap_config);
 	if (IS_ERR(smsc->regmap))

drivers/mfd/sprd-sc27xx-spi.c

@@ -111,6 +111,9 @@ static const struct mfd_cell sprd_pmic_devs[] = {
 	}, {
 		.name = "sc27xx-poweroff",
 		.of_compatible = "sprd,sc27xx-poweroff",
+	}, {
+		.name = "sc27xx-syscon",
+		.of_compatible = "sprd,sc27xx-syscon",
 	},
 };
 

drivers/mfd/stm32-timers.c

@@ -4,16 +4,156 @@
  * Author: Benjamin Gaignard <benjamin.gaignard@st.com>
  */
 
+#include <linux/bitfield.h>
 #include <linux/mfd/stm32-timers.h>
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/reset.h>
 
+#define STM32_TIMERS_MAX_REGISTERS	0x3fc
+
+/* DIER register DMA enable bits */
+static const u32 stm32_timers_dier_dmaen[STM32_TIMERS_MAX_DMAS] = {
+	TIM_DIER_CC1DE,
+	TIM_DIER_CC2DE,
+	TIM_DIER_CC3DE,
+	TIM_DIER_CC4DE,
+	TIM_DIER_UIE,
+	TIM_DIER_TDE,
+	TIM_DIER_COMDE
+};
+
+static void stm32_timers_dma_done(void *p)
+{
+	struct stm32_timers_dma *dma = p;
+	struct dma_tx_state state;
+	enum dma_status status;
+
+	status = dmaengine_tx_status(dma->chan, dma->chan->cookie, &state);
+	if (status == DMA_COMPLETE)
+		complete(&dma->completion);
+}
+
+/**
+ * stm32_timers_dma_burst_read - Read from timers registers using DMA.
+ *
+ * Read from STM32 timers registers using DMA on a single event.
+ * @dev: reference to stm32_timers MFD device
+ * @buf: DMA'able destination buffer
+ * @id: stm32_timers_dmas event identifier (ch[1..4], up, trig or com)
+ * @reg: registers start offset for DMA to read from (like CCRx for capture)
+ * @num_reg: number of registers to read upon each DMA request, starting @reg.
+ * @bursts: number of bursts to read (e.g. like two for pwm period capture)
+ * @tmo_ms: timeout (milliseconds)
+ */
+int stm32_timers_dma_burst_read(struct device *dev, u32 *buf,
+				enum stm32_timers_dmas id, u32 reg,
+				unsigned int num_reg, unsigned int bursts,
+				unsigned long tmo_ms)
+{
+	struct stm32_timers *ddata = dev_get_drvdata(dev);
+	unsigned long timeout = msecs_to_jiffies(tmo_ms);
+	struct regmap *regmap = ddata->regmap;
+	struct stm32_timers_dma *dma = &ddata->dma;
+	size_t len = num_reg * bursts * sizeof(u32);
+	struct dma_async_tx_descriptor *desc;
+	struct dma_slave_config config;
+	dma_cookie_t cookie;
+	dma_addr_t dma_buf;
+	u32 dbl, dba;
+	long err;
+	int ret;
+
+	/* Sanity check */
+	if (id < STM32_TIMERS_DMA_CH1 || id >= STM32_TIMERS_MAX_DMAS)
+		return -EINVAL;
+
+	if (!num_reg || !bursts || reg > STM32_TIMERS_MAX_REGISTERS ||
+	    (reg + num_reg * sizeof(u32)) > STM32_TIMERS_MAX_REGISTERS)
+		return -EINVAL;
+
+	if (!dma->chans[id])
+		return -ENODEV;
+	mutex_lock(&dma->lock);
+
+	/* Select DMA channel in use */
+	dma->chan = dma->chans[id];
+	dma_buf = dma_map_single(dev, buf, len, DMA_FROM_DEVICE);
+	if (dma_mapping_error(dev, dma_buf)) {
+		ret = -ENOMEM;
+		goto unlock;
+	}
+
+	/* Prepare DMA read from timer registers, using DMA burst mode */
+	memset(&config, 0, sizeof(config));
+	config.src_addr = (dma_addr_t)dma->phys_base + TIM_DMAR;
+	config.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
+	ret = dmaengine_slave_config(dma->chan, &config);
+	if (ret)
+		goto unmap;
+
+	desc = dmaengine_prep_slave_single(dma->chan, dma_buf, len,
+					   DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
+	if (!desc) {
+		ret = -EBUSY;
+		goto unmap;
+	}
+
+	desc->callback = stm32_timers_dma_done;
+	desc->callback_param = dma;
+	cookie = dmaengine_submit(desc);
+	ret = dma_submit_error(cookie);
+	if (ret)
+		goto dma_term;
+
+	reinit_completion(&dma->completion);
+	dma_async_issue_pending(dma->chan);
+
+	/* Setup and enable timer DMA burst mode */
+	dbl = FIELD_PREP(TIM_DCR_DBL, bursts - 1);
+	dba = FIELD_PREP(TIM_DCR_DBA, reg >> 2);
+	ret = regmap_write(regmap, TIM_DCR, dbl | dba);
+	if (ret)
+		goto dma_term;
+
+	/* Clear pending flags before enabling DMA request */
+	ret = regmap_write(regmap, TIM_SR, 0);
+	if (ret)
+		goto dcr_clr;
+
+	ret = regmap_update_bits(regmap, TIM_DIER, stm32_timers_dier_dmaen[id],
+				 stm32_timers_dier_dmaen[id]);
+	if (ret)
+		goto dcr_clr;
+
+	err = wait_for_completion_interruptible_timeout(&dma->completion,
+							timeout);
+	if (err == 0)
+		ret = -ETIMEDOUT;
+	else if (err < 0)
+		ret = err;
+
+	regmap_update_bits(regmap, TIM_DIER, stm32_timers_dier_dmaen[id], 0);
+	regmap_write(regmap, TIM_SR, 0);
+dcr_clr:
+	regmap_write(regmap, TIM_DCR, 0);
+dma_term:
+	dmaengine_terminate_all(dma->chan);
+unmap:
+	dma_unmap_single(dev, dma_buf, len, DMA_FROM_DEVICE);
+unlock:
+	dma->chan = NULL;
+	mutex_unlock(&dma->lock);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(stm32_timers_dma_burst_read);
+
 static const struct regmap_config stm32_timers_regmap_cfg = {
 	.reg_bits = 32,
 	.val_bits = 32,
 	.reg_stride = sizeof(u32),
-	.max_register = 0x3fc,
+	.max_register = STM32_TIMERS_MAX_REGISTERS,
 };
 
 static void stm32_timers_get_arr_size(struct stm32_timers *ddata)
@@ -27,12 +167,45 @@ static void stm32_timers_get_arr_size(struct stm32_timers *ddata)
 	regmap_write(ddata->regmap, TIM_ARR, 0x0);
 }
 
+static void stm32_timers_dma_probe(struct device *dev,
+				   struct stm32_timers *ddata)
+{
+	int i;
+	char name[4];
+
+	init_completion(&ddata->dma.completion);
+	mutex_init(&ddata->dma.lock);
+
+	/* Optional DMA support: get valid DMA channel(s) or NULL */
+	for (i = STM32_TIMERS_DMA_CH1; i <= STM32_TIMERS_DMA_CH4; i++) {
+		snprintf(name, ARRAY_SIZE(name), "ch%1d", i + 1);
+		ddata->dma.chans[i] = dma_request_slave_channel(dev, name);
+	}
+	ddata->dma.chans[STM32_TIMERS_DMA_UP] =
+		dma_request_slave_channel(dev, "up");
+	ddata->dma.chans[STM32_TIMERS_DMA_TRIG] =
+		dma_request_slave_channel(dev, "trig");
+	ddata->dma.chans[STM32_TIMERS_DMA_COM] =
+		dma_request_slave_channel(dev, "com");
+}
+
+static void stm32_timers_dma_remove(struct device *dev,
+				    struct stm32_timers *ddata)
+{
+	int i;
+
+	for (i = STM32_TIMERS_DMA_CH1; i < STM32_TIMERS_MAX_DMAS; i++)
+		if (ddata->dma.chans[i])
+			dma_release_channel(ddata->dma.chans[i]);
+}
+
 static int stm32_timers_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct stm32_timers *ddata;
 	struct resource *res;
 	void __iomem *mmio;
+	int ret;
 
 	ddata = devm_kzalloc(dev, sizeof(*ddata), GFP_KERNEL);
 	if (!ddata)
@@ -43,6 +216,9 @@ static int stm32_timers_probe(struct platform_device *pdev)
 	if (IS_ERR(mmio))
 		return PTR_ERR(mmio);
 
+	/* Timer physical addr for DMA */
+	ddata->dma.phys_base = res->start;
+
 	ddata->regmap = devm_regmap_init_mmio_clk(dev, "int", mmio,
 						  &stm32_timers_regmap_cfg);
 	if (IS_ERR(ddata->regmap))
@@ -54,9 +230,29 @@ static int stm32_timers_probe(struct platform_device *pdev)
 
 	stm32_timers_get_arr_size(ddata);
 
+	stm32_timers_dma_probe(dev, ddata);
+
 	platform_set_drvdata(pdev, ddata);
 
-	return devm_of_platform_populate(&pdev->dev);
+	ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
+	if (ret)
+		stm32_timers_dma_remove(dev, ddata);
+
+	return ret;
+}
+
+static int stm32_timers_remove(struct platform_device *pdev)
+{
+	struct stm32_timers *ddata = platform_get_drvdata(pdev);
+
+	/*
+	 * Don't use devm_ here: enfore of_platform_depopulate() happens before
+	 * DMA are released, to avoid race on DMA.
+	 */
+	of_platform_depopulate(&pdev->dev);
+	stm32_timers_dma_remove(&pdev->dev, ddata);
+
+	return 0;
 }
 
 static const struct of_device_id stm32_timers_of_match[] = {
@@ -67,6 +263,7 @@ MODULE_DEVICE_TABLE(of, stm32_timers_of_match);
 
 static struct platform_driver stm32_timers_driver = {
 	.probe = stm32_timers_probe,
+	.remove = stm32_timers_remove,
 	.driver	= {
 		.name = "stm32-timers",
 		.of_match_table = stm32_timers_of_match,

drivers/mfd/syscon.c

@@ -106,9 +106,11 @@ static struct syscon *of_syscon_register(struct device_node *np)
 		}
 	}
 
+	syscon_config.name = of_node_full_name(np);
 	syscon_config.reg_stride = reg_io_width;
 	syscon_config.val_bits = reg_io_width * 8;
 	syscon_config.max_register = resource_size(&res) - reg_io_width;
+	syscon_config.name = of_node_full_name(np);
 
 	regmap = regmap_init_mmio(NULL, base, &syscon_config);
 	if (IS_ERR(regmap)) {

drivers/mfd/ti_am335x_tscadc.c

@@ -169,10 +169,9 @@ static	int ti_tscadc_probe(struct platform_device *pdev)
 
 	/* Allocate memory for device */
 	tscadc = devm_kzalloc(&pdev->dev, sizeof(*tscadc), GFP_KERNEL);
-	if (!tscadc) {
-		dev_err(&pdev->dev, "failed to allocate memory.\n");
+	if (!tscadc)
 		return -ENOMEM;
-	}
+
 	tscadc->dev = &pdev->dev;
 
 	err = platform_get_irq(pdev, 0);

drivers/mfd/timberdale.c

@@ -777,7 +777,7 @@ static int timb_probe(struct pci_dev *dev,
 			&dev->resource[0], msix_entries[0].vector, NULL);
 		break;
 	default:
-		dev_err(&dev->dev, "Uknown IP setup: %d.%d.%d\n",
+		dev_err(&dev->dev, "Unknown IP setup: %d.%d.%d\n",
 			priv->fw.major, priv->fw.minor, ip_setup);
 		err = -ENODEV;
 		goto err_mfd;

drivers/mfd/tps65090.c

@@ -192,10 +192,8 @@ static int tps65090_i2c_probe(struct i2c_client *client,
 		irq_base = pdata->irq_base;
 
 	tps65090 = devm_kzalloc(&client->dev, sizeof(*tps65090), GFP_KERNEL);
-	if (!tps65090) {
-		dev_err(&client->dev, "mem alloc for tps65090 failed\n");
+	if (!tps65090)
 		return -ENOMEM;
-	}
 
 	tps65090->dev = &client->dev;
 	i2c_set_clientdata(client, tps65090);

drivers/mfd/tps6586x.c

@@ -423,10 +423,8 @@ static struct tps6586x_platform_data *tps6586x_parse_dt(struct i2c_client *clien
 	struct tps6586x_platform_data *pdata;
 
 	pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
-	if (!pdata) {
-		dev_err(&client->dev, "Memory allocation failed\n");
+	if (!pdata)
 		return NULL;
-	}
 
 	pdata->num_subdevs = 0;
 	pdata->subdevs = NULL;

drivers/mfd/tps65910.c

@@ -229,7 +229,7 @@ static struct regmap_irq_chip tps65910_irq_chip = {
 static int tps65910_irq_init(struct tps65910 *tps65910, int irq,
 		    struct tps65910_platform_data *pdata)
 {
-	int ret = 0;
+	int ret;
 	static struct regmap_irq_chip *tps6591x_irqs_chip;
 
 	if (!irq) {
@@ -312,14 +312,14 @@ static int tps65910_ck32k_init(struct tps65910 *tps65910,
 static int tps65910_sleepinit(struct tps65910 *tps65910,
 		struct tps65910_board *pmic_pdata)
 {
-	struct device *dev = NULL;
-	int ret = 0;
-
-	dev = tps65910->dev;
+	struct device *dev;
+	int ret;
 
 	if (!pmic_pdata->en_dev_slp)
 		return 0;
 
+	dev = tps65910->dev;
+
 	/* enabling SLEEP device state */
 	ret = tps65910_reg_set_bits(tps65910, TPS65910_DEVCTRL,
 				DEVCTRL_DEV_SLP_MASK);
@@ -383,7 +383,7 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
 	struct tps65910_board *board_info;
 	unsigned int prop;
 	const struct of_device_id *match;
-	int ret = 0;
+	int ret;
 
 	match = of_match_device(tps65910_of_match, &client->dev);
 	if (!match) {
@@ -395,10 +395,8 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
 
 	board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
 			GFP_KERNEL);
-	if (!board_info) {
-		dev_err(&client->dev, "Failed to allocate pdata\n");
+	if (!board_info)
 		return NULL;
-	}
 
 	ret = of_property_read_u32(np, "ti,vmbch-threshold", &prop);
 	if (!ret)
@@ -462,7 +460,7 @@ static int tps65910_i2c_probe(struct i2c_client *i2c,
 	struct tps65910_board *of_pmic_plat_data = NULL;
 	struct tps65910_platform_data *init_data;
 	unsigned long chip_id = id->driver_data;
-	int ret = 0;
+	int ret;
 
 	pmic_plat_data = dev_get_platdata(&i2c->dev);
 

drivers/mfd/tps65911-comparator.c

@@ -22,9 +22,8 @@
 #include <linux/gpio.h>
 #include <linux/mfd/tps65910.h>
 
-#define COMP					0
-#define COMP1					1
-#define COMP2					2
+#define COMP1					0
+#define COMP2					1
 
 /* Comparator 1 voltage selection table in millivolts */
 static const u16 COMP_VSEL_TABLE[] = {
@@ -63,9 +62,6 @@ static int comp_threshold_set(struct tps65910 *tps65910, int id, int voltage)
 	int ret;
 	u8 index = 0, val;
 
-	if (id == COMP)
-		return 0;
-
 	while (curr_voltage < tps_comp.uV_max) {
 		curr_voltage = tps_comp.vsel_table[index];
 		if (curr_voltage >= voltage)
@@ -78,7 +74,7 @@ static int comp_threshold_set(struct tps65910 *tps65910, int id, int voltage)
 		return -EINVAL;
 
 	val = index << 1;
-	ret = tps65910->write(tps65910, tps_comp.reg, 1, &val);
+	ret = tps65910_reg_write(tps65910, tps_comp.reg, val);
 
 	return ret;
 }
@@ -86,13 +82,10 @@ static int comp_threshold_set(struct tps65910 *tps65910, int id, int voltage)
 static int comp_threshold_get(struct tps65910 *tps65910, int id)
 {
 	struct comparator tps_comp = tps_comparators[id];
+	unsigned int val;
 	int ret;
-	u8 val;
-
-	if (id == COMP)
-		return 0;
 
-	ret = tps65910->read(tps65910, tps_comp.reg, 1, &val);
+	ret = tps65910_reg_read(tps65910, tps_comp.reg, &val);
 	if (ret < 0)
 		return ret;
 

drivers/mfd/tps68470.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * TPS68470 chip Parent driver
  *
@@ -8,15 +9,6 @@
  *	Tianshu Qiu <tian.shu.qiu@intel.com>
  *	Jian Xu Zheng <jian.xu.zheng@intel.com>
  *	Yuning Pu <yuning.pu@intel.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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
  */
 
 #include <linux/acpi.h>

drivers/mfd/tps80031.c

@@ -431,10 +431,8 @@ static int tps80031_probe(struct i2c_client *client,
 	}
 
 	tps80031 = devm_kzalloc(&client->dev, sizeof(*tps80031), GFP_KERNEL);
-	if (!tps80031) {
-		dev_err(&client->dev, "Malloc failed for tps80031\n");
+	if (!tps80031)
 		return -ENOMEM;
-	}
 
 	for (i = 0; i < TPS80031_NUM_SLAVES; i++) {
 		if (tps80031_slave_address[i] == client->addr)

drivers/mfd/twl-core.c

@@ -1177,7 +1177,7 @@ twl_probe(struct i2c_client *client, const struct i2c_device_id *id)
 	twl_priv->ready = true;
 
 	/* setup clock framework */
-	clocks_init(&pdev->dev, pdata ? pdata->clock : NULL);
+	clocks_init(&client->dev, pdata ? pdata->clock : NULL);
 
 	/* read TWL IDCODE Register */
 	if (twl_class_is_4030()) {

drivers/mfd/twl6030-irq.c

@@ -392,10 +392,8 @@ int twl6030_init_irq(struct device *dev, int irq_num)
 	nr_irqs = TWL6030_NR_IRQS;
 
 	twl6030_irq = devm_kzalloc(dev, sizeof(*twl6030_irq), GFP_KERNEL);
-	if (!twl6030_irq) {
-		dev_err(dev, "twl6030_irq: Memory allocation failed\n");
+	if (!twl6030_irq)
 		return -ENOMEM;
-	}
 
 	mask[0] = 0xFF;
 	mask[1] = 0xFF;

drivers/mfd/viperboard.c

@@ -59,10 +59,8 @@ static int vprbrd_probe(struct usb_interface *interface,
 
 	/* allocate memory for our device state and initialize it */
 	vb = kzalloc(sizeof(*vb), GFP_KERNEL);
-	if (vb == NULL) {
-		dev_err(&interface->dev, "Out of memory\n");
+	if (!vb)
 		return -ENOMEM;
-	}
 
 	mutex_init(&vb->lock);
 

drivers/mfd/wm97xx-core.c

@@ -278,7 +278,7 @@ static int wm97xx_ac97_probe(struct ac97_codec_device *adev)
 
 	codec_pdata = &wm97xx->codec_pdata;
 	codec_pdata->ac97 = wm97xx->ac97;
-	codec_pdata->batt_pdata = pdata->batt_pdata;
+	codec_pdata->batt_pdata = pdata ? pdata->batt_pdata : NULL;
 
 	switch (adev->vendor_id) {
 	case WM9705_VENDOR_ID:

drivers/platform/chrome/cros_ec_debugfs.c

@@ -470,3 +470,23 @@ void cros_ec_debugfs_remove(struct cros_ec_dev *ec)
 	cros_ec_cleanup_console_log(ec->debug_info);
 }
 EXPORT_SYMBOL(cros_ec_debugfs_remove);
+
+void cros_ec_debugfs_suspend(struct cros_ec_dev *ec)
+{
+	/*
+	 * cros_ec_debugfs_init() failures are non-fatal; it's also possible
+	 * that we initted things but decided that console log wasn't supported.
+	 * We'll use the same set of checks that cros_ec_debugfs_remove() +
+	 * cros_ec_cleanup_console_log() end up using to handle those cases.
+	 */
+	if (ec->debug_info && ec->debug_info->log_buffer.buf)
+		cancel_delayed_work_sync(&ec->debug_info->log_poll_work);
+}
+EXPORT_SYMBOL(cros_ec_debugfs_suspend);
+
+void cros_ec_debugfs_resume(struct cros_ec_dev *ec)
+{
+	if (ec->debug_info && ec->debug_info->log_buffer.buf)
+		schedule_delayed_work(&ec->debug_info->log_poll_work, 0);
+}
+EXPORT_SYMBOL(cros_ec_debugfs_resume);

drivers/pwm/pwm-stm32.c

@@ -8,6 +8,7 @@
  *             pwm-atmel.c from Bo Shen
  */
 
+#include <linux/bitfield.h>
 #include <linux/mfd/stm32-timers.h>
 #include <linux/module.h>
 #include <linux/of.h>
@@ -25,6 +26,7 @@ struct stm32_pwm {
 	struct regmap *regmap;
 	u32 max_arr;
 	bool have_complementary_output;
+	u32 capture[4] ____cacheline_aligned; /* DMA'able buffer */
 };
 
 struct stm32_breakinput {
@@ -62,6 +64,258 @@ static int write_ccrx(struct stm32_pwm *dev, int ch, u32 value)
 	return -EINVAL;
 }
 
+#define TIM_CCER_CC12P (TIM_CCER_CC1P | TIM_CCER_CC2P)
+#define TIM_CCER_CC12E (TIM_CCER_CC1E | TIM_CCER_CC2E)
+#define TIM_CCER_CC34P (TIM_CCER_CC3P | TIM_CCER_CC4P)
+#define TIM_CCER_CC34E (TIM_CCER_CC3E | TIM_CCER_CC4E)
+
+/*
+ * Capture using PWM input mode:
+ *                              ___          ___
+ * TI[1, 2, 3 or 4]: ........._|   |________|
+ *                             ^0  ^1       ^2
+ *                              .   .        .
+ *                              .   .        XXXXX
+ *                              .   .   XXXXX     |
+ *                              .  XXXXX     .    |
+ *                            XXXXX .        .    |
+ * COUNTER:        ______XXXXX  .   .        .    |_XXX
+ *                 start^       .   .        .        ^stop
+ *                      .       .   .        .
+ *                      v       v   .        v
+ *                                  v
+ * CCR1/CCR3:       tx..........t0...........t2
+ * CCR2/CCR4:       tx..............t1.........
+ *
+ * DMA burst transfer:          |            |
+ *                              v            v
+ * DMA buffer:                  { t0, tx }   { t2, t1 }
+ * DMA done:                                 ^
+ *
+ * 0: IC1/3 snapchot on rising edge: counter value -> CCR1/CCR3
+ *    + DMA transfer CCR[1/3] & CCR[2/4] values (t0, tx: doesn't care)
+ * 1: IC2/4 snapchot on falling edge: counter value -> CCR2/CCR4
+ * 2: IC1/3 snapchot on rising edge: counter value -> CCR1/CCR3
+ *    + DMA transfer CCR[1/3] & CCR[2/4] values (t2, t1)
+ *
+ * DMA done, compute:
+ * - Period     = t2 - t0
+ * - Duty cycle = t1 - t0
+ */
+static int stm32_pwm_raw_capture(struct stm32_pwm *priv, struct pwm_device *pwm,
+				 unsigned long tmo_ms, u32 *raw_prd,
+				 u32 *raw_dty)
+{
+	struct device *parent = priv->chip.dev->parent;
+	enum stm32_timers_dmas dma_id;
+	u32 ccen, ccr;
+	int ret;
+
+	/* Ensure registers have been updated, enable counter and capture */
+	regmap_update_bits(priv->regmap, TIM_EGR, TIM_EGR_UG, TIM_EGR_UG);
+	regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, TIM_CR1_CEN);
+
+	/* Use cc1 or cc3 DMA resp for PWM input channels 1 & 2 or 3 & 4 */
+	dma_id = pwm->hwpwm < 2 ? STM32_TIMERS_DMA_CH1 : STM32_TIMERS_DMA_CH3;
+	ccen = pwm->hwpwm < 2 ? TIM_CCER_CC12E : TIM_CCER_CC34E;
+	ccr = pwm->hwpwm < 2 ? TIM_CCR1 : TIM_CCR3;
+	regmap_update_bits(priv->regmap, TIM_CCER, ccen, ccen);
+
+	/*
+	 * Timer DMA burst mode. Request 2 registers, 2 bursts, to get both
+	 * CCR1 & CCR2 (or CCR3 & CCR4) on each capture event.
+	 * We'll get two capture snapchots: { CCR1, CCR2 }, { CCR1, CCR2 }
+	 * or { CCR3, CCR4 }, { CCR3, CCR4 }
+	 */
+	ret = stm32_timers_dma_burst_read(parent, priv->capture, dma_id, ccr, 2,
+					  2, tmo_ms);
+	if (ret)
+		goto stop;
+
+	/* Period: t2 - t0 (take care of counter overflow) */
+	if (priv->capture[0] <= priv->capture[2])
+		*raw_prd = priv->capture[2] - priv->capture[0];
+	else
+		*raw_prd = priv->max_arr - priv->capture[0] + priv->capture[2];
+
+	/* Duty cycle capture requires at least two capture units */
+	if (pwm->chip->npwm < 2)
+		*raw_dty = 0;
+	else if (priv->capture[0] <= priv->capture[3])
+		*raw_dty = priv->capture[3] - priv->capture[0];
+	else
+		*raw_dty = priv->max_arr - priv->capture[0] + priv->capture[3];
+
+	if (*raw_dty > *raw_prd) {
+		/*
+		 * Race beetween PWM input and DMA: it may happen
+		 * falling edge triggers new capture on TI2/4 before DMA
+		 * had a chance to read CCR2/4. It means capture[1]
+		 * contains period + duty_cycle. So, subtract period.
+		 */
+		*raw_dty -= *raw_prd;
+	}
+
+stop:
+	regmap_update_bits(priv->regmap, TIM_CCER, ccen, 0);
+	regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0);
+
+	return ret;
+}
+
+static int stm32_pwm_capture(struct pwm_chip *chip, struct pwm_device *pwm,
+			     struct pwm_capture *result, unsigned long tmo_ms)
+{
+	struct stm32_pwm *priv = to_stm32_pwm_dev(chip);
+	unsigned long long prd, div, dty;
+	unsigned long rate;
+	unsigned int psc = 0, icpsc, scale;
+	u32 raw_prd = 0, raw_dty = 0;
+	int ret = 0;
+
+	mutex_lock(&priv->lock);
+
+	if (active_channels(priv)) {
+		ret = -EBUSY;
+		goto unlock;
+	}
+
+	ret = clk_enable(priv->clk);
+	if (ret) {
+		dev_err(priv->chip.dev, "failed to enable counter clock\n");
+		goto unlock;
+	}
+
+	rate = clk_get_rate(priv->clk);
+	if (!rate) {
+		ret = -EINVAL;
+		goto clk_dis;
+	}
+
+	/* prescaler: fit timeout window provided by upper layer */
+	div = (unsigned long long)rate * (unsigned long long)tmo_ms;
+	do_div(div, MSEC_PER_SEC);
+	prd = div;
+	while ((div > priv->max_arr) && (psc < MAX_TIM_PSC)) {
+		psc++;
+		div = prd;
+		do_div(div, psc + 1);
+	}
+	regmap_write(priv->regmap, TIM_ARR, priv->max_arr);
+	regmap_write(priv->regmap, TIM_PSC, psc);
+
+	/* Map TI1 or TI2 PWM input to IC1 & IC2 (or TI3/4 to IC3 & IC4) */
+	regmap_update_bits(priv->regmap,
+			   pwm->hwpwm < 2 ? TIM_CCMR1 : TIM_CCMR2,
+			   TIM_CCMR_CC1S | TIM_CCMR_CC2S, pwm->hwpwm & 0x1 ?
+			   TIM_CCMR_CC1S_TI2 | TIM_CCMR_CC2S_TI2 :
+			   TIM_CCMR_CC1S_TI1 | TIM_CCMR_CC2S_TI1);
+
+	/* Capture period on IC1/3 rising edge, duty cycle on IC2/4 falling. */
+	regmap_update_bits(priv->regmap, TIM_CCER, pwm->hwpwm < 2 ?
+			   TIM_CCER_CC12P : TIM_CCER_CC34P, pwm->hwpwm < 2 ?
+			   TIM_CCER_CC2P : TIM_CCER_CC4P);
+
+	ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd, &raw_dty);
+	if (ret)
+		goto stop;
+
+	/*
+	 * Got a capture. Try to improve accuracy at high rates:
+	 * - decrease counter clock prescaler, scale up to max rate.
+	 * - use input prescaler, capture once every /2 /4 or /8 edges.
+	 */
+	if (raw_prd) {
+		u32 max_arr = priv->max_arr - 0x1000; /* arbitrary margin */
+
+		scale = max_arr / min(max_arr, raw_prd);
+	} else {
+		scale = priv->max_arr; /* bellow resolution, use max scale */
+	}
+
+	if (psc && scale > 1) {
+		/* 2nd measure with new scale */
+		psc /= scale;
+		regmap_write(priv->regmap, TIM_PSC, psc);
+		ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd,
+					    &raw_dty);
+		if (ret)
+			goto stop;
+	}
+
+	/* Compute intermediate period not to exceed timeout at low rates */
+	prd = (unsigned long long)raw_prd * (psc + 1) * NSEC_PER_SEC;
+	do_div(prd, rate);
+
+	for (icpsc = 0; icpsc < MAX_TIM_ICPSC ; icpsc++) {
+		/* input prescaler: also keep arbitrary margin */
+		if (raw_prd >= (priv->max_arr - 0x1000) >> (icpsc + 1))
+			break;
+		if (prd >= (tmo_ms * NSEC_PER_MSEC) >> (icpsc + 2))
+			break;
+	}
+
+	if (!icpsc)
+		goto done;
+
+	/* Last chance to improve period accuracy, using input prescaler */
+	regmap_update_bits(priv->regmap,
+			   pwm->hwpwm < 2 ? TIM_CCMR1 : TIM_CCMR2,
+			   TIM_CCMR_IC1PSC | TIM_CCMR_IC2PSC,
+			   FIELD_PREP(TIM_CCMR_IC1PSC, icpsc) |
+			   FIELD_PREP(TIM_CCMR_IC2PSC, icpsc));
+
+	ret = stm32_pwm_raw_capture(priv, pwm, tmo_ms, &raw_prd, &raw_dty);
+	if (ret)
+		goto stop;
+
+	if (raw_dty >= (raw_prd >> icpsc)) {
+		/*
+		 * We may fall here using input prescaler, when input
+		 * capture starts on high side (before falling edge).
+		 * Example with icpsc to capture on each 4 events:
+		 *
+		 *       start   1st capture                     2nd capture
+		 *         v     v                               v
+		 *         ___   _____   _____   _____   _____   ____
+		 * TI1..4     |__|    |__|    |__|    |__|    |__|
+		 *            v  v    .  .    .  .    .       v  v
+		 * icpsc1/3:  .  0    .  1    .  2    .  3    .  0
+		 * icpsc2/4:  0       1       2       3       0
+		 *            v  v                            v  v
+		 * CCR1/3  ......t0..............................t2
+		 * CCR2/4  ..t1..............................t1'...
+		 *               .                            .  .
+		 * Capture0:     .<----------------------------->.
+		 * Capture1:     .<-------------------------->.  .
+		 *               .                            .  .
+		 * Period:       .<------>                    .  .
+		 * Low side:                                  .<>.
+		 *
+		 * Result:
+		 * - Period = Capture0 / icpsc
+		 * - Duty = Period - Low side = Period - (Capture0 - Capture1)
+		 */
+		raw_dty = (raw_prd >> icpsc) - (raw_prd - raw_dty);
+	}
+
+done:
+	prd = (unsigned long long)raw_prd * (psc + 1) * NSEC_PER_SEC;
+	result->period = DIV_ROUND_UP_ULL(prd, rate << icpsc);
+	dty = (unsigned long long)raw_dty * (psc + 1) * NSEC_PER_SEC;
+	result->duty_cycle = DIV_ROUND_UP_ULL(dty, rate);
+stop:
+	regmap_write(priv->regmap, TIM_CCER, 0);
+	regmap_write(priv->regmap, pwm->hwpwm < 2 ? TIM_CCMR1 : TIM_CCMR2, 0);
+	regmap_write(priv->regmap, TIM_PSC, 0);
+clk_dis:
+	clk_disable(priv->clk);
+unlock:
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
 static int stm32_pwm_config(struct stm32_pwm *priv, int ch,
 			    int duty_ns, int period_ns)
 {
@@ -230,6 +484,9 @@ static int stm32_pwm_apply_locked(struct pwm_chip *chip, struct pwm_device *pwm,
 static const struct pwm_ops stm32pwm_ops = {
 	.owner = THIS_MODULE,
 	.apply = stm32_pwm_apply_locked,
+#if IS_ENABLED(CONFIG_DMA_ENGINE)
+	.capture = stm32_pwm_capture,
+#endif
 };
 
 static int stm32_pwm_set_breakinput(struct stm32_pwm *priv,

drivers/rtc/rtc-mt6397.c

@@ -322,10 +322,9 @@ static int mtk_rtc_probe(struct platform_device *pdev)
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	rtc->addr_base = res->start;
 
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	rtc->irq = irq_create_mapping(mt6397_chip->irq_domain, res->start);
-	if (rtc->irq <= 0)
-		return -EINVAL;
+	rtc->irq = platform_get_irq(pdev, 0);
+	if (rtc->irq < 0)
+		return rtc->irq;
 
 	rtc->regmap = mt6397_chip->regmap;
 	rtc->dev = &pdev->dev;

include/linux/mfd/arizona/pdata.h

@@ -56,6 +56,7 @@
 #define ARIZONA_MAX_PDM_SPK 2
 
 struct regulator_init_data;
+struct gpio_desc;
 
 struct arizona_micbias {
 	int mV;                    /** Regulated voltage */
@@ -77,7 +78,7 @@ struct arizona_micd_range {
 };
 
 struct arizona_pdata {
-	int reset;      /** GPIO controlling /RESET, if any */
+	struct gpio_desc *reset;      /** GPIO controlling /RESET, if any */
 
 	/** Regulator configuration for MICVDD */
 	struct arizona_micsupp_pdata micvdd;

include/linux/mfd/axp20x.h

@@ -592,11 +592,11 @@ enum axp806_irqs {
 	AXP806_IRQ_DCDCC_V_LOW,
 	AXP806_IRQ_DCDCD_V_LOW,
 	AXP806_IRQ_DCDCE_V_LOW,
-	AXP806_IRQ_PWROK_LONG,
-	AXP806_IRQ_PWROK_SHORT,
+	AXP806_IRQ_POK_LONG,
+	AXP806_IRQ_POK_SHORT,
 	AXP806_IRQ_WAKEUP,
-	AXP806_IRQ_PWROK_FALL,
-	AXP806_IRQ_PWROK_RISE,
+	AXP806_IRQ_POK_FALL,
+	AXP806_IRQ_POK_RISE,
 };
 
 enum axp809_irqs {
@@ -642,7 +642,7 @@ struct axp20x_dev {
 	struct regmap_irq_chip_data	*regmap_irqc;
 	long				variant;
 	int                             nr_cells;
-	struct mfd_cell                 *cells;
+	const struct mfd_cell           *cells;
 	const struct regmap_config	*regmap_cfg;
 	const struct regmap_irq_chip	*regmap_irq_chip;
 };

include/linux/mfd/cros_ec.h

@@ -329,23 +329,7 @@ extern struct attribute_group cros_ec_vbc_attr_group;
 /* debugfs stuff */
 int cros_ec_debugfs_init(struct cros_ec_dev *ec);
 void cros_ec_debugfs_remove(struct cros_ec_dev *ec);
-
-/* ACPI GPE handler */
-#ifdef CONFIG_ACPI
-
-int cros_ec_acpi_install_gpe_handler(struct device *dev);
-void cros_ec_acpi_remove_gpe_handler(void);
-void cros_ec_acpi_clear_gpe(void);
-
-#else /* CONFIG_ACPI */
-
-static inline int cros_ec_acpi_install_gpe_handler(struct device *dev)
-{
-	return -ENODEV;
-}
-static inline void cros_ec_acpi_remove_gpe_handler(void) {}
-static inline void cros_ec_acpi_clear_gpe(void) {}
-
-#endif /* CONFIG_ACPI */
+void cros_ec_debugfs_suspend(struct cros_ec_dev *ec);
+void cros_ec_debugfs_resume(struct cros_ec_dev *ec);
 
 #endif /* __LINUX_MFD_CROS_EC_H */

include/linux/mfd/stm32-timers.h

@@ -8,6 +8,8 @@
 #define _LINUX_STM32_GPTIMER_H_
 
 #include <linux/clk.h>
+#include <linux/dmaengine.h>
+#include <linux/dma-mapping.h>
 #include <linux/regmap.h>
 
 #define TIM_CR1		0x00	/* Control Register 1      */
@@ -27,6 +29,8 @@
 #define TIM_CCR3	0x3C	/* Capt/Comp Register 3    */
 #define TIM_CCR4	0x40	/* Capt/Comp Register 4    */
 #define TIM_BDTR	0x44	/* Break and Dead-Time Reg */
+#define TIM_DCR		0x48	/* DMA control register    */
+#define TIM_DMAR	0x4C	/* DMA register for transfer */
 
 #define TIM_CR1_CEN	BIT(0)	/* Counter Enable	   */
 #define TIM_CR1_DIR	BIT(4)  /* Counter Direction	   */
@@ -36,17 +40,35 @@
 #define TIM_SMCR_SMS	(BIT(0) | BIT(1) | BIT(2)) /* Slave mode selection */
 #define TIM_SMCR_TS	(BIT(4) | BIT(5) | BIT(6)) /* Trigger selection */
 #define TIM_DIER_UIE	BIT(0)	/* Update interrupt	   */
+#define TIM_DIER_UDE	BIT(8)  /* Update DMA request Enable */
+#define TIM_DIER_CC1DE	BIT(9)  /* CC1 DMA request Enable  */
+#define TIM_DIER_CC2DE	BIT(10) /* CC2 DMA request Enable  */
+#define TIM_DIER_CC3DE	BIT(11) /* CC3 DMA request Enable  */
+#define TIM_DIER_CC4DE	BIT(12) /* CC4 DMA request Enable  */
+#define TIM_DIER_COMDE	BIT(13) /* COM DMA request Enable  */
+#define TIM_DIER_TDE	BIT(14) /* Trigger DMA request Enable */
 #define TIM_SR_UIF	BIT(0)	/* Update interrupt flag   */
 #define TIM_EGR_UG	BIT(0)	/* Update Generation       */
 #define TIM_CCMR_PE	BIT(3)	/* Channel Preload Enable  */
 #define TIM_CCMR_M1	(BIT(6) | BIT(5))  /* Channel PWM Mode 1 */
+#define TIM_CCMR_CC1S		(BIT(0) | BIT(1)) /* Capture/compare 1 sel */
+#define TIM_CCMR_IC1PSC		GENMASK(3, 2)	/* Input capture 1 prescaler */
+#define TIM_CCMR_CC2S		(BIT(8) | BIT(9)) /* Capture/compare 2 sel */
+#define TIM_CCMR_IC2PSC		GENMASK(11, 10)	/* Input capture 2 prescaler */
+#define TIM_CCMR_CC1S_TI1	BIT(0)	/* IC1/IC3 selects TI1/TI3 */
+#define TIM_CCMR_CC1S_TI2	BIT(1)	/* IC1/IC3 selects TI2/TI4 */
+#define TIM_CCMR_CC2S_TI2	BIT(8)	/* IC2/IC4 selects TI2/TI4 */
+#define TIM_CCMR_CC2S_TI1	BIT(9)	/* IC2/IC4 selects TI1/TI3 */
 #define TIM_CCER_CC1E	BIT(0)	/* Capt/Comp 1  out Ena    */
 #define TIM_CCER_CC1P	BIT(1)	/* Capt/Comp 1  Polarity   */
 #define TIM_CCER_CC1NE	BIT(2)	/* Capt/Comp 1N out Ena    */
 #define TIM_CCER_CC1NP	BIT(3)	/* Capt/Comp 1N Polarity   */
 #define TIM_CCER_CC2E	BIT(4)	/* Capt/Comp 2  out Ena    */
+#define TIM_CCER_CC2P	BIT(5)	/* Capt/Comp 2  Polarity   */
 #define TIM_CCER_CC3E	BIT(8)	/* Capt/Comp 3  out Ena    */
+#define TIM_CCER_CC3P	BIT(9)	/* Capt/Comp 3  Polarity   */
 #define TIM_CCER_CC4E	BIT(12)	/* Capt/Comp 4  out Ena    */
+#define TIM_CCER_CC4P	BIT(13)	/* Capt/Comp 4  Polarity   */
 #define TIM_CCER_CCXE	(BIT(0) | BIT(4) | BIT(8) | BIT(12))
 #define TIM_BDTR_BKE	BIT(12) /* Break input enable	   */
 #define TIM_BDTR_BKP	BIT(13) /* Break input polarity	   */
@@ -56,8 +78,11 @@
 #define TIM_BDTR_BK2F	(BIT(20) | BIT(21) | BIT(22) | BIT(23))
 #define TIM_BDTR_BK2E	BIT(24) /* Break 2 input enable	   */
 #define TIM_BDTR_BK2P	BIT(25) /* Break 2 input polarity  */
+#define TIM_DCR_DBA	GENMASK(4, 0)	/* DMA base addr */
+#define TIM_DCR_DBL	GENMASK(12, 8)	/* DMA burst len */
 
 #define MAX_TIM_PSC		0xFFFF
+#define MAX_TIM_ICPSC		0x3
 #define TIM_CR2_MMS_SHIFT	4
 #define TIM_CR2_MMS2_SHIFT	20
 #define TIM_SMCR_TS_SHIFT	4
@@ -65,9 +90,54 @@
 #define TIM_BDTR_BKF_SHIFT	16
 #define TIM_BDTR_BK2F_SHIFT	20
 
+enum stm32_timers_dmas {
+	STM32_TIMERS_DMA_CH1,
+	STM32_TIMERS_DMA_CH2,
+	STM32_TIMERS_DMA_CH3,
+	STM32_TIMERS_DMA_CH4,
+	STM32_TIMERS_DMA_UP,
+	STM32_TIMERS_DMA_TRIG,
+	STM32_TIMERS_DMA_COM,
+	STM32_TIMERS_MAX_DMAS,
+};
+
+/**
+ * struct stm32_timers_dma - STM32 timer DMA handling.
+ * @completion:		end of DMA transfer completion
+ * @phys_base:		control registers physical base address
+ * @lock:		protect DMA access
+ * @chan:		DMA channel in use
+ * @chans:		DMA channels available for this timer instance
+ */
+struct stm32_timers_dma {
+	struct completion completion;
+	phys_addr_t phys_base;
+	struct mutex lock;
+	struct dma_chan *chan;
+	struct dma_chan *chans[STM32_TIMERS_MAX_DMAS];
+};
+
 struct stm32_timers {
 	struct clk *clk;
 	struct regmap *regmap;
 	u32 max_arr;
+	struct stm32_timers_dma dma; /* Only to be used by the parent */
 };
+
+#if IS_REACHABLE(CONFIG_MFD_STM32_TIMERS)
+int stm32_timers_dma_burst_read(struct device *dev, u32 *buf,
+				enum stm32_timers_dmas id, u32 reg,
+				unsigned int num_reg, unsigned int bursts,
+				unsigned long tmo_ms);
+#else
+static inline int stm32_timers_dma_burst_read(struct device *dev, u32 *buf,
+					      enum stm32_timers_dmas id,
+					      u32 reg,
+					      unsigned int num_reg,
+					      unsigned int bursts,
+					      unsigned long tmo_ms)
+{
+	return -ENODEV;
+}
+#endif
 #endif

include/linux/mfd/syscon/exynos4-pmu.h

-/*
- * Copyright (C) 2015 Samsung Electronics Co., Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _LINUX_MFD_SYSCON_PMU_EXYNOS4_H_
-#define _LINUX_MFD_SYSCON_PMU_EXYNOS4_H_
-
-/* Exynos4 PMU register definitions */
-
-/* MIPI_PHYn_CONTROL register offset: n = 0..1 */
-#define EXYNOS4_MIPI_PHY_CONTROL(n)	(0x710 + (n) * 4)
-#define EXYNOS4_MIPI_PHY_ENABLE		(1 << 0)
-#define EXYNOS4_MIPI_PHY_SRESETN	(1 << 1)
-#define EXYNOS4_MIPI_PHY_MRESETN	(1 << 2)
-#define EXYNOS4_MIPI_PHY_RESET_MASK	(3 << 1)
-
-#endif /* _LINUX_MFD_SYSCON_PMU_EXYNOS4_H_ */

include/linux/mfd/syscon/exynos5-pmu.h

-/*
- * Exynos5 SoC series Power Management Unit (PMU) register offsets
- * and bit definitions.
- *
- * Copyright (C) 2014 Samsung Electronics Co., Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#ifndef _LINUX_MFD_SYSCON_PMU_EXYNOS5_H_
-#define _LINUX_MFD_SYSCON_PMU_EXYNOS5_H_
-
-#define EXYNOS5_PHY_ENABLE			BIT(0)
-#define EXYNOS5_MIPI_PHY_S_RESETN		BIT(1)
-#define EXYNOS5_MIPI_PHY_M_RESETN		BIT(2)
-
-#endif /* _LINUX_MFD_SYSCON_PMU_EXYNOS5_H_ */

include/linux/mfd/tps65218.h

@@ -205,10 +205,10 @@ enum tps65218_regulator_id {
 	TPS65218_DCDC_4,
 	TPS65218_DCDC_5,
 	TPS65218_DCDC_6,
-	/* LS's */
-	TPS65218_LS_3,
 	/* LDOs */
 	TPS65218_LDO_1,
+	/* LS's */
+	TPS65218_LS_3,
 };
 
 #define TPS65218_MAX_REG_ID		TPS65218_LDO_1

include/linux/mfd/tps68470.h

-/*
- * Copyright (c) 2017 Intel Corporation
- *
- * Functions to access TPS68470 power management chip.
- *
- * 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 version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2017 Intel Corporation */
+/* Functions to access TPS68470 power management chip. */
 
 #ifndef __LINUX_MFD_TPS68470_H
 #define __LINUX_MFD_TPS68470_H