[PATCH v4 0/4] Add support for the TI TPS65086 PMIC

[PATCH v4 0/4] Add support for the TI TPS65086 PMIC

[Andrew F. Davis]

This series adds support for the TPS65086 PMIC. It is a MFD with an I2C
interface, several regulators and load switches, and a GPO controller.

v1 can be found here: [1] v2: [2] v3: [3]

Changes from v3:
 - Removed compatible strings from DT sub-nodes
 - Rearranged DT bindings
 - Small fixes

Changes from v2:
 - Use DT match callback in regulator
 - Typo fixes

Changes from v1:
 - Split up DT Docs into separate patches
 - Use mfd core to instantiate sub-devices
 - Several small fixes as discussed in v1 thread

[1] http://www.spinics.net/lists/devicetree/msg98403.html
[2] http://www.spinics.net/lists/kernel/msg2111345.html
[3] https://lkml.org/lkml/2015/11/4/393

Andrew F. Davis (4):
  Documentation: tps65086: Add DT bindings for the TPS65086 PMIC
  mfd: tps65086: Add driver for the TPS65086 PMIC
  regulator: tps65086: Add regulator driver for the TPS65086 PMIC
  gpio: tps65086: Add GPO driver for the TPS65086 PMIC

 Documentation/devicetree/bindings/mfd/tps65086.txt |  55 +++++
 drivers/gpio/Kconfig                               |   6 +
 drivers/gpio/Makefile                              |   1 +
 drivers/gpio/gpio-tps65086.c                       | 144 ++++++++++++
 drivers/mfd/Kconfig                                |  13 ++
 drivers/mfd/Makefile                               |   1 +
 drivers/mfd/tps65086.c                             | 150 ++++++++++++
 drivers/regulator/Kconfig                          |   7 +
 drivers/regulator/Makefile                         |   1 +
 drivers/regulator/tps65086-regulator.c             | 251 +++++++++++++++++++++
 include/linux/mfd/tps65086.h                       | 118 ++++++++++
 11 files changed, 747 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/tps65086.txt
 create mode 100644 drivers/gpio/gpio-tps65086.c
 create mode 100644 drivers/mfd/tps65086.c
 create mode 100644 drivers/regulator/tps65086-regulator.c
 create mode 100644 include/linux/mfd/tps65086.h

-- 
1.9.1

[PATCH v4 1/4] Documentation: tps65086: Add DT bindings for the TPS65086 PMIC

[Andrew F. Davis]

The TPS65086 PMIC contains several regulators and a GPO controller.
Add bindings for the TPS65086 PMIC.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 Documentation/devicetree/bindings/mfd/tps65086.txt | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/tps65086.txt

diff --git a/Documentation/devicetree/bindings/mfd/tps65086.txt b/Documentation/devicetree/bindings/mfd/tps65086.txt
new file mode 100644
index 0000000..6b50613
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/tps65086.txt
@@ -0,0 +1,55 @@
+* TPS65086 Power Management Integrated Circuit bindings
+
+Required properties:
+ - compatible		: Should be "ti,tps65086".
+ - reg			: I2C slave address.
+ - interrupt-parent	: Phandle to he parent interrupt controller.
+ - interrupts		: The interrupt line the device is connected to.
+ - interrupt-controller	: Marks the device node as an interrupt controller.
+ - #interrupt-cells	: The number of cells to describe an IRQ, should be 2.
+			    The first cell is the IRQ number.
+			    The second cell is the flags, encoded as trigger
+			    masks from ../interrupt-controller/interrupts.txt.
+ - gpio-controller      : Marks the device node as a GPIO Controller.
+ - #gpio-cells          : Should be two.  The first cell is the pin number and
+                            the second cell is used to specify flags.
+                            See ../gpio/gpio.txt for more information.
+ - regulators:          : List of child nodes that specify the regulator
+                            initialization data. Child nodes must be named
+                            after their hardware counterparts: buck[1-6],
+                            ldoa[1-3], swa1, swb[1-2], and vtt. Each child
+                            nodes is defined using the standard binding for
+                            regulators and the optional regulator properties
+                            defined below.
+
+Optional regulator properties:
+ - ti,regulator-step-size-25mv	: This is applicable for buck[1,2,6], set this
+				    if the regulator is factory set with a 25mv
+				    step voltage mapping.
+ - ti,regulator-decay		: This is applicable for buck[1-6], set this if
+				    the output needs to decay, default is for
+				    the output to slew down.
+
+Example:
+
+	pmic: tps65086@5e {
+		compatible = "ti,tps65086";
+		reg = <0x5e>;
+		interrupt-parent = <&gpio1>;
+		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		gpio-controller;
+		#gpio-cells = <2>;
+
+		regulators {
+			buck1 {
+				regulator-name = "vcc1";
+				regulator-min-microvolt = <1600000>;
+				regulator-max-microvolt = <1600000>;
+				regulator-boot-on;
+				ti,regulator-decay;
+				ti,regulator-step-size-25mv;
+			};
+		};
+	};
-- 
1.9.1

[PATCH v4 2/4] mfd: tps65086: Add driver for the TPS65086 PMIC

[Andrew F. Davis]

Add support for the TPS65912 device. It provides communication
through I2C and contains the following components:

 - Regulators
 - Load switches
 - GPO controller

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 drivers/mfd/Kconfig          |  13 ++++
 drivers/mfd/Makefile         |   1 +
 drivers/mfd/tps65086.c       | 150 +++++++++++++++++++++++++++++++++++++++++++
 include/linux/mfd/tps65086.h | 118 ++++++++++++++++++++++++++++++++++
 4 files changed, 282 insertions(+)
 create mode 100644 drivers/mfd/tps65086.c
 create mode 100644 include/linux/mfd/tps65086.h

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index 4d92df6..232a911 100644
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -1106,6 +1106,19 @@ config TPS6507X
 	  This driver can also be built as a module.  If so, the module
 	  will be called tps6507x.
 
+config MFD_TPS65086
+	tristate "TI TPS65086 Power Management Integrated Chips (PMICs)"
+	select REGMAP
+	select REGMAP_IRQ
+	select REGMAP_I2C
+	depends on I2C
+	help
+	  If you say yes here you get support for the TPS65086 series of
+	  Power Management chips.
+	  This driver provides common support for accessing the device,
+	  additional drivers must be enabled in order to use the
+	  functionality of the device.
+
 config TPS65911_COMPARATOR
 	tristate
 
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index a8b76b8..3dcfec6 100644
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -66,6 +66,7 @@ obj-$(CONFIG_MFD_WM8994)	+= wm8994-core.o wm8994-irq.o wm8994-regmap.o
 obj-$(CONFIG_TPS6105X)		+= tps6105x.o
 obj-$(CONFIG_TPS65010)		+= tps65010.o
 obj-$(CONFIG_TPS6507X)		+= tps6507x.o
+obj-$(CONFIG_MFD_TPS65086)	+= tps65086.o
 obj-$(CONFIG_MFD_TPS65217)	+= tps65217.o
 obj-$(CONFIG_MFD_TPS65218)	+= tps65218.o
 obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o
diff --git a/drivers/mfd/tps65086.c b/drivers/mfd/tps65086.c
new file mode 100644
index 0000000..e1edfc0
--- /dev/null
+++ b/drivers/mfd/tps65086.c
@@ -0,0 +1,150 @@
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/core.h>
+#include <linux/module.h>
+
+#include <linux/mfd/tps65086.h>
+
+static const struct mfd_cell tps65086_cells[] = {
+	{ .name = "tps65086-regulator", },
+	{ .name = "tps65086-gpio", },
+};
+
+static const struct regmap_range tps65086_yes_ranges[] = {
+	regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
+	regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
+	regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
+	regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
+};
+
+static const struct regmap_access_table tps65086_volatile_table = {
+	.yes_ranges = tps65086_yes_ranges,
+	.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
+};
+
+static const struct regmap_config tps65086_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.cache_type = REGCACHE_RBTREE,
+	.volatile_table = &tps65086_volatile_table,
+};
+
+static const struct regmap_irq tps65086_irqs[] = {
+	REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
+	REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
+	REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
+};
+
+static struct regmap_irq_chip tps65086_irq_chip = {
+	.name = "tps65086",
+	.status_base = TPS65086_IRQ,
+	.mask_base = TPS65086_IRQ_MASK,
+	.ack_base = TPS65086_IRQ,
+	.init_ack_masked = true,
+	.num_regs = 1,
+	.irqs = tps65086_irqs,
+	.num_irqs = ARRAY_SIZE(tps65086_irqs),
+};
+
+static const struct of_device_id tps65086_of_match_table[] = {
+	{ .compatible = "ti,tps65086", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
+
+static int tps65086_probe(struct i2c_client *client,
+			  const struct i2c_device_id *ids)
+{
+	struct tps65086 *tps;
+	unsigned int version;
+	int ret;
+
+	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
+	if (!tps)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, tps);
+	tps->dev = &client->dev;
+	tps->irq = client->irq;
+
+	tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
+	if (IS_ERR(tps->regmap)) {
+		dev_err(tps->dev, "Failed to initialize register map\n");
+		return PTR_ERR(tps->regmap);
+	}
+
+	ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
+	if (ret) {
+		dev_err(tps->dev, "Failed to read revision register\n");
+		return ret;
+	}
+
+	dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
+		 (version & TPS65086_DEVICEID_PART_MASK),
+		 (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
+		 (version & TPS65086_DEVICEID_REV_MASK) >> 6);
+
+	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
+				  &tps65086_irq_chip, &tps->irq_data);
+	if (ret) {
+		dev_err(tps->dev, "Failed to register IRQ chip\n");
+		return ret;
+	}
+
+	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
+			      ARRAY_SIZE(tps65086_cells), NULL, 0,
+			      regmap_irq_get_domain(tps->irq_data));
+	if (ret) {
+		regmap_del_irq_chip(tps->irq, tps->irq_data);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tps65086_remove(struct i2c_client *client)
+{
+	struct tps65086 *tps = i2c_get_clientdata(client);
+
+	regmap_del_irq_chip(tps->irq, tps->irq_data);
+
+	return 0;
+}
+
+static const struct i2c_device_id tps65086_id_table[] = {
+	{ "tps65086", 0 },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
+
+static struct i2c_driver tps65086_driver = {
+	.driver		= {
+		.name	= "tps65086",
+		.of_match_table = tps65086_of_match_table,
+	},
+	.probe		= tps65086_probe,
+	.remove		= tps65086_remove,
+	.id_table       = tps65086_id_table,
+};
+module_i2c_driver(tps65086_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65086 PMIC Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/include/linux/mfd/tps65086.h b/include/linux/mfd/tps65086.h
new file mode 100644
index 0000000..0c50452
--- /dev/null
+++ b/include/linux/mfd/tps65086.h
@@ -0,0 +1,118 @@
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#ifndef __LINUX_MFD_TPS65086_H
+#define __LINUX_MFD_TPS65086_H
+
+#include <linux/device.h>
+#include <linux/regmap.h>
+
+/* List of registers for TPS65086 */
+#define TPS65086_DEVICEID		0x01
+#define TPS65086_IRQ			0x02
+#define TPS65086_IRQ_MASK		0x03
+#define TPS65086_PMICSTAT		0x04
+#define TPS65086_SHUTDNSRC		0x05
+#define TPS65086_BUCK1CTRL		0x20
+#define TPS65086_BUCK2CTRL		0x21
+#define TPS65086_BUCK3DECAY		0x22
+#define TPS65086_BUCK3VID		0x23
+#define TPS65086_BUCK3SLPCTRL		0x24
+#define TPS65086_BUCK4CTRL		0x25
+#define TPS65086_BUCK5CTRL		0x26
+#define TPS65086_BUCK6CTRL		0x27
+#define TPS65086_LDOA2CTRL		0x28
+#define TPS65086_LDOA3CTRL		0x29
+#define TPS65086_DISCHCTRL1		0x40
+#define TPS65086_DISCHCTRL2		0x41
+#define TPS65086_DISCHCTRL3		0x42
+#define TPS65086_PG_DELAY1		0x43
+#define TPS65086_FORCESHUTDN		0x91
+#define TPS65086_BUCK1SLPCTRL		0x92
+#define TPS65086_BUCK2SLPCTRL		0x93
+#define TPS65086_BUCK4VID		0x94
+#define TPS65086_BUCK4SLPVID		0x95
+#define TPS65086_BUCK5VID		0x96
+#define TPS65086_BUCK5SLPVID		0x97
+#define TPS65086_BUCK6VID		0x98
+#define TPS65086_BUCK6SLPVID		0x99
+#define TPS65086_LDOA2VID		0x9A
+#define TPS65086_LDOA3VID		0x9B
+#define TPS65086_BUCK123CTRL		0x9C
+#define TPS65086_PG_DELAY2		0x9D
+#define TPS65086_PIN_EN_MASK1		0x9E
+#define TPS65086_PIN_EN_MASK2		0x9F
+#define TPS65086_SWVTT_EN		0x9F
+#define TPS65086_PIN_EN_OVR1		0xA0
+#define TPS65086_PIN_EN_OVR2		0xA1
+#define TPS65086_GPOCTRL		0xA1
+#define TPS65086_PWR_FAULT_MASK1	0xA2
+#define TPS65086_PWR_FAULT_MASK2	0xA3
+#define TPS65086_GPO1PG_CTRL1		0xA4
+#define TPS65086_GPO1PG_CTRL2		0xA5
+#define TPS65086_GPO4PG_CTRL1		0xA6
+#define TPS65086_GPO4PG_CTRL2		0xA7
+#define TPS65086_GPO2PG_CTRL1		0xA8
+#define TPS65086_GPO2PG_CTRL2		0xA9
+#define TPS65086_GPO3PG_CTRL1		0xAA
+#define TPS65086_GPO3PG_CTRL2		0xAB
+#define TPS65086_LDOA1CTRL		0xAE
+#define TPS65086_PG_STATUS1		0xB0
+#define TPS65086_PG_STATUS2		0xB1
+#define TPS65086_PWR_FAULT_STATUS1	0xB2
+#define TPS65086_PWR_FAULT_STATUS2	0xB3
+#define TPS65086_TEMPCRIT		0xB4
+#define TPS65086_TEMPHOT		0xB5
+#define TPS65086_OC_STATUS		0xB6
+
+/* IRQ Register field definitions */
+#define TPS65086_IRQ_DIETEMP_MASK	BIT(0)
+#define TPS65086_IRQ_SHUTDN_MASK	BIT(3)
+#define TPS65086_IRQ_FAULT_MASK		BIT(7)
+
+/* DEVICEID Register field definitions */
+#define TPS65086_DEVICEID_PART_MASK	GENMASK(3, 0)
+#define TPS65086_DEVICEID_OTP_MASK	GENMASK(5, 4)
+#define TPS65086_DEVICEID_REV_MASK	GENMASK(7, 6)
+
+/* VID Masks */
+#define BUCK_VID_MASK			GENMASK(7, 1)
+#define VDOA1_VID_MASK			GENMASK(4, 1)
+#define VDOA23_VID_MASK			GENMASK(3, 0)
+
+/* Define the TPS65086 IRQ numbers */
+enum tps65086_irqs {
+	TPS65086_IRQ_DIETEMP,
+	TPS65086_IRQ_SHUTDN,
+	TPS65086_IRQ_FAULT,
+};
+
+/*
+ * struct tps65086 - state holder for the tps65086 driver
+ *
+ * Device data may be used to access the TPS65086 chip
+ */
+struct tps65086 {
+	struct device *dev;
+	struct regmap *regmap;
+
+	/* IRQ Data */
+	int irq;
+	struct regmap_irq_chip_data *irq_data;
+};
+
+#endif /*  __LINUX_MFD_TPS65086_H */
-- 
1.9.1

[PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Andrew F. Davis]

Add support for TPS65086 PMIC regulators.

The regulators set consists of 3 Step-down Controllers, 3 Step-down
Converters, 3 LDOs, 3 Load Switches, and a Sink and Source LDO. The
output voltages are configurable and are meant to supply power to a
SoC and/or other components.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 drivers/regulator/Kconfig              |   7 +
 drivers/regulator/Makefile             |   1 +
 drivers/regulator/tps65086-regulator.c | 251 +++++++++++++++++++++++++++++++++
 3 files changed, 259 insertions(+)
 create mode 100644 drivers/regulator/tps65086-regulator.c

diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index 8df0b0e..b45fc60 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -680,6 +680,13 @@ config REGULATOR_TPS6507X
 	  three step-down converters and two general-purpose LDO voltage regulators.
 	  It supports TI's software based Class-2 SmartReflex implementation.
 
+config REGULATOR_TPS65086
+	tristate "TI TPS65086 Power regulators"
+	depends on MFD_TPS65086
+	help
+	  This driver provides support for the voltage regulators on
+	  TI TPS65086 PMICs.
+
 config REGULATOR_TPS65090
 	tristate "TI TPS65090 Power regulator"
 	depends on MFD_TPS65090
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 0f81749..945d8ec 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -85,6 +85,7 @@ obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o
 obj-$(CONFIG_REGULATOR_TPS62360) += tps62360-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o
 obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o
+obj-$(CONFIG_REGULATOR_TPS65086) += tps65086-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65090) += tps65090-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o
 obj-$(CONFIG_REGULATOR_TPS65218) += tps65218-regulator.o
diff --git a/drivers/regulator/tps65086-regulator.c b/drivers/regulator/tps65086-regulator.c
new file mode 100644
index 0000000..d59cd19
--- /dev/null
+++ b/drivers/regulator/tps65086-regulator.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/driver.h>
+
+#include <linux/mfd/tps65086.h>
+
+enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
+	LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };
+
+#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm)	\
+	[_id] = {							\
+		.desc = {						\
+			.name			= _name,		\
+			.of_match		= _of,			\
+			.regulators_node	= "regulators",		\
+			.of_parse_cb		= tps65086_of_parse_cb,	\
+			.id			= _id,			\
+			.ops			= &reg_ops,		\
+			.n_voltages		= _nv,			\
+			.type			= REGULATOR_VOLTAGE,	\
+			.owner			= THIS_MODULE,		\
+			.vsel_reg		= _vr,			\
+			.vsel_mask		= _vm,			\
+			.enable_reg		= _er,			\
+			.enable_mask		= _em,			\
+			.volt_table		= NULL,			\
+			.linear_ranges		= _lr,			\
+			.n_linear_ranges	= ARRAY_SIZE(_lr),	\
+		},							\
+		.decay_reg = _dr,					\
+		.decay_mask = _dm,					\
+	}
+
+#define TPS65086_SWITCH(_name, _of, _id, _er, _em)			\
+	[_id] = {							\
+		.desc = {						\
+			.name			= _name,		\
+			.of_match		= _of,			\
+			.regulators_node	= "regulators",		\
+			.of_parse_cb		= tps65086_of_parse_cb,	\
+			.id			= _id,			\
+			.ops			= &switch_ops,		\
+			.type			= REGULATOR_VOLTAGE,	\
+			.owner			= THIS_MODULE,		\
+			.enable_reg		= _er,			\
+			.enable_mask		= _em,			\
+		},							\
+	}
+
+struct tps65086_regulator {
+	struct regulator_desc desc;
+	unsigned int decay_reg;
+	unsigned int decay_mask;
+};
+
+static const struct regulator_linear_range tps65086_buck126_10mv_ranges[] = {
+	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+	REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
+};
+
+static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
+	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
+	REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
+};
+
+static const struct regulator_linear_range tps65086_buck345_ranges[] = {
+	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
+	REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
+};
+
+static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
+	REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
+	REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
+	REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xA, 100000),
+	REGULATOR_LINEAR_RANGE(2700000, 0xB, 0xD, 150000),
+	REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
+};
+
+static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
+	REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
+	REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
+};
+
+/* Operations permitted on regulators */
+static struct regulator_ops reg_ops = {
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
+	.map_voltage		= regulator_map_voltage_linear_range,
+	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
+	.list_voltage		= regulator_list_voltage_linear_range,
+};
+
+/* Operations permitted on load switches */
+static struct regulator_ops switch_ops = {
+	.enable			= regulator_enable_regmap,
+	.disable		= regulator_disable_regmap,
+	.is_enabled		= regulator_is_enabled_regmap,
+};
+
+static int tps65086_of_parse_cb(struct device_node *dev,
+				const struct regulator_desc *desc,
+				struct regulator_config *config);
+
+static struct tps65086_regulator regulators[] = {
+	TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
+			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
+			   tps65086_buck126_10mv_ranges, TPS65086_BUCK1CTRL,
+			   BIT(0)),
+	TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
+			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
+			   tps65086_buck126_10mv_ranges, TPS65086_BUCK2CTRL,
+			   BIT(0)),
+	TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
+			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
+			   tps65086_buck345_ranges, TPS65086_BUCK3DECAY,
+			   BIT(0)),
+	TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
+			   BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
+			   tps65086_buck345_ranges, TPS65086_BUCK4VID,
+			   BIT(0)),
+	TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
+			   BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
+			   tps65086_buck345_ranges, TPS65086_BUCK5CTRL,
+			   BIT(0)),
+	TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
+			   BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
+			   tps65086_buck126_10mv_ranges, TPS65086_BUCK6CTRL,
+			   BIT(0)),
+	TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
+			   VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
+			   tps65086_ldoa1_ranges, 0, 0),
+	TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
+			   VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
+			   tps65086_ldoa23_ranges, 0, 0),
+	TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
+			   VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
+			   tps65086_ldoa23_ranges, 0, 0),
+	TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
+	TPS65086_SWITCH("SWB1", "swa2", SWB1, TPS65086_SWVTT_EN, BIT(6)),
+	TPS65086_SWITCH("SWB2", "swa3", SWB2, TPS65086_SWVTT_EN, BIT(7)),
+	TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
+};
+
+static inline bool has_25mv_mode(int id)
+{
+	switch (id) {
+	case BUCK1:
+	case BUCK2:
+	case BUCK6:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static int tps65086_of_parse_cb(struct device_node *dev,
+				const struct regulator_desc *desc,
+				struct regulator_config *config)
+{
+	int ret;
+
+	/* Check for 25mV step mode */
+	if (has_25mv_mode(desc->id) &&
+			of_property_read_bool(config->of_node, "ti,regulator-step-size-25mv")) {
+		regulators[desc->id].desc.linear_ranges =
+				tps65086_buck126_25mv_ranges;
+		regulators[desc->id].desc.n_linear_ranges =
+				ARRAY_SIZE(tps65086_buck126_25mv_ranges);
+	}
+
+	/* Check for decay mode */
+	if (desc->id <= BUCK6 && of_property_read_bool(config->of_node, "ti,regulator-decay")) {
+		ret = regmap_write_bits(config->regmap,
+					regulators[desc->id].decay_reg,
+					regulators[desc->id].decay_mask,
+					regulators[desc->id].decay_mask);
+		if (ret) {
+			dev_err(config->dev, "Error setting decay\n");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static int tps65086_regulator_probe(struct platform_device *pdev)
+{
+	struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
+	struct regulator_config config = { };
+	struct regulator_dev *rdev;
+	int i;
+
+	platform_set_drvdata(pdev, tps);
+
+	config.dev = &pdev->dev;
+	config.dev->of_node = tps->dev->of_node;
+	config.driver_data = tps;
+	config.regmap = tps->regmap;
+
+	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+		rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
+					       &config);
+		if (IS_ERR(rdev)) {
+			dev_err(tps->dev, "failed to register %s regulator\n",
+				pdev->name);
+			return PTR_ERR(rdev);
+		}
+	}
+
+	return 0;
+}
+
+static const struct platform_device_id tps65086_regulator_id_table[] = {
+	{ "tps65086-regulator", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);
+
+static struct platform_driver tps65086_regulator_driver = {
+	.driver = {
+		.name = "tps65086-regulator",
+	},
+	.probe = tps65086_regulator_probe,
+	.id_table = tps65086_regulator_id_table,
+};
+module_platform_driver(tps65086_regulator_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65086 Regulator driver");
+MODULE_LICENSE("GPL v2");
-- 
1.9.1

[PATCH v4 4/4] gpio: tps65086: Add GPO driver for the TPS65086 PMIC

[Andrew F. Davis]

Add support for the TPS65086 PMIC GPOs.

TPS65086 has four configurable GPOs that can be used for several
purposes. These are output only.

Signed-off-by: Andrew F. Davis <afd@ti.com>
---
 drivers/gpio/Kconfig         |   6 ++
 drivers/gpio/Makefile        |   1 +
 drivers/gpio/gpio-tps65086.c | 144 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 151 insertions(+)
 create mode 100644 drivers/gpio/gpio-tps65086.c

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index b18bea0..f357a2e 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -838,6 +838,12 @@ config GPIO_TIMBERDALE
 	---help---
 	Add support for the GPIO IP in the timberdale FPGA.
 
+config GPIO_TPS65086
+	tristate "TI TPS65086 GPO"
+	depends on MFD_TPS65086
+	help
+	  This driver supports the GPO on TI TPS65086x PMICs.
+
 config GPIO_TPS6586X
 	bool "TPS6586X GPIO"
 	depends on MFD_TPS6586X
diff --git a/drivers/gpio/Makefile b/drivers/gpio/Makefile
index 986dbd8..fd98126 100644
--- a/drivers/gpio/Makefile
+++ b/drivers/gpio/Makefile
@@ -95,6 +95,7 @@ obj-$(CONFIG_GPIO_TC3589X)	+= gpio-tc3589x.o
 obj-$(CONFIG_ARCH_TEGRA)	+= gpio-tegra.o
 obj-$(CONFIG_GPIO_TIMBERDALE)	+= gpio-timberdale.o
 obj-$(CONFIG_GPIO_PALMAS)	+= gpio-palmas.o
+obj-$(CONFIG_GPIO_TPS65086)	+= gpio-tps65086.o
 obj-$(CONFIG_GPIO_TPS6586X)	+= gpio-tps6586x.o
 obj-$(CONFIG_GPIO_TPS65910)	+= gpio-tps65910.o
 obj-$(CONFIG_GPIO_TPS65912)	+= gpio-tps65912.o
diff --git a/drivers/gpio/gpio-tps65086.c b/drivers/gpio/gpio-tps65086.c
new file mode 100644
index 0000000..22bd796
--- /dev/null
+++ b/drivers/gpio/gpio-tps65086.c
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Author: Andrew F. Davis <afd@ti.com>
+ *
+ * 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.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether expressed or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License version 2 for more details.
+ *
+ * Based on the TPS65912 driver
+ */
+
+#include <linux/gpio.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+
+#include <linux/mfd/tps65086.h>
+
+struct tps65086_gpio {
+	struct gpio_chip chip;
+	struct tps65086 *tps;
+};
+
+static inline struct tps65086_gpio *to_tps65086_gpio(struct gpio_chip *chip)
+{
+	return container_of(chip, struct tps65086_gpio, chip);
+}
+
+static int tps65086_gpio_get_direction(struct gpio_chip *chip,
+				       unsigned offset)
+{
+	return GPIOF_DIR_OUT;
+}
+
+static int tps65086_gpio_direction_input(struct gpio_chip *chip,
+					 unsigned offset)
+{
+	/* This device is output only */
+	return -EINVAL;
+}
+
+static int tps65086_gpio_direction_output(struct gpio_chip *chip,
+					unsigned offset, int value)
+{
+	struct tps65086_gpio *gpio = to_tps65086_gpio(chip);
+
+	/* Set the initial value */
+	regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
+			   BIT(4 + offset), value ? BIT(4 + offset) : 0);
+
+	return 0;
+}
+
+static int tps65086_gpio_get(struct gpio_chip *chip, unsigned offset)
+{
+	struct tps65086_gpio *gpio = to_tps65086_gpio(chip);
+	int ret, val;
+
+	ret = regmap_read(gpio->tps->regmap, TPS65086_GPOCTRL, &val);
+	if (ret < 0)
+		return ret;
+
+	return val & BIT(4 + offset);
+}
+
+static void tps65086_gpio_set(struct gpio_chip *chip, unsigned offset,
+			      int value)
+{
+	struct tps65086_gpio *gpio = to_tps65086_gpio(chip);
+
+	regmap_update_bits(gpio->tps->regmap, TPS65086_GPOCTRL,
+			   BIT(4 + offset), value ? BIT(4 + offset) : 0);
+}
+
+static struct gpio_chip template_chip = {
+	.label			= "tps65086-gpio",
+	.owner			= THIS_MODULE,
+	.get_direction		= tps65086_gpio_get_direction,
+	.direction_input	= tps65086_gpio_direction_input,
+	.direction_output	= tps65086_gpio_direction_output,
+	.get			= tps65086_gpio_get,
+	.set			= tps65086_gpio_set,
+	.base			= -1,
+	.ngpio			= 4,
+	.can_sleep		= true,
+};
+
+static int tps65086_gpio_probe(struct platform_device *pdev)
+{
+	struct tps65086_gpio *gpio;
+	int ret;
+
+	gpio = devm_kzalloc(&pdev->dev, sizeof(*gpio), GFP_KERNEL);
+	if (!gpio)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, gpio);
+
+	gpio->tps = dev_get_drvdata(pdev->dev.parent);
+	gpio->chip = template_chip;
+	gpio->chip.dev = gpio->tps->dev;
+
+	ret = gpiochip_add(&gpio->chip);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Could not register gpiochip, %d\n", ret);
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tps65086_gpio_remove(struct platform_device *pdev)
+{
+	struct tps65086_gpio *gpio = platform_get_drvdata(pdev);
+
+	gpiochip_remove(&gpio->chip);
+
+	return 0;
+}
+
+static const struct platform_device_id tps65086_gpio_id_table[] = {
+	{ "tps65086-gpio", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, tps65086_gpio_id_table);
+
+static struct platform_driver tps65086_gpio_driver = {
+	.driver = {
+		.name = "tps65086-gpio",
+	},
+	.probe = tps65086_gpio_probe,
+	.remove = tps65086_gpio_remove,
+	.id_table = tps65086_gpio_id_table,
+};
+module_platform_driver(tps65086_gpio_driver);
+
+MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
+MODULE_DESCRIPTION("TPS65086 GPIO driver");
+MODULE_LICENSE("GPL v2");
-- 
1.9.1

Re: [PATCH v4 1/4] Documentation: tps65086: Add DT bindings for the TPS65086 PMIC

[Rob Herring]

On Thu, Nov 19, 2015 at 05:01:39PM -0600, Andrew F. Davis wrote:
> The TPS65086 PMIC contains several regulators and a GPO controller.
> Add bindings for the TPS65086 PMIC.
> 
> Signed-off-by: Andrew F. Davis <afd@ti.com>

Acked-by: Rob Herring <robh@kernel.org>

> ---
>  Documentation/devicetree/bindings/mfd/tps65086.txt | 55 ++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/tps65086.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/tps65086.txt b/Documentation/devicetree/bindings/mfd/tps65086.txt
> new file mode 100644
> index 0000000..6b50613
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/tps65086.txt
> @@ -0,0 +1,55 @@
> +* TPS65086 Power Management Integrated Circuit bindings
> +
> +Required properties:
> + - compatible		: Should be "ti,tps65086".
> + - reg			: I2C slave address.
> + - interrupt-parent	: Phandle to he parent interrupt controller.
> + - interrupts		: The interrupt line the device is connected to.
> + - interrupt-controller	: Marks the device node as an interrupt controller.
> + - #interrupt-cells	: The number of cells to describe an IRQ, should be 2.
> +			    The first cell is the IRQ number.
> +			    The second cell is the flags, encoded as trigger
> +			    masks from ../interrupt-controller/interrupts.txt.
> + - gpio-controller      : Marks the device node as a GPIO Controller.
> + - #gpio-cells          : Should be two.  The first cell is the pin number and
> +                            the second cell is used to specify flags.
> +                            See ../gpio/gpio.txt for more information.
> + - regulators:          : List of child nodes that specify the regulator
> +                            initialization data. Child nodes must be named
> +                            after their hardware counterparts: buck[1-6],
> +                            ldoa[1-3], swa1, swb[1-2], and vtt. Each child
> +                            nodes is defined using the standard binding for
> +                            regulators and the optional regulator properties
> +                            defined below.
> +
> +Optional regulator properties:
> + - ti,regulator-step-size-25mv	: This is applicable for buck[1,2,6], set this
> +				    if the regulator is factory set with a 25mv
> +				    step voltage mapping.
> + - ti,regulator-decay		: This is applicable for buck[1-6], set this if
> +				    the output needs to decay, default is for
> +				    the output to slew down.
> +
> +Example:
> +
> +	pmic: tps65086@5e {
> +		compatible = "ti,tps65086";
> +		reg = <0x5e>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +
> +		regulators {
> +			buck1 {
> +				regulator-name = "vcc1";
> +				regulator-min-microvolt = <1600000>;
> +				regulator-max-microvolt = <1600000>;
> +				regulator-boot-on;
> +				ti,regulator-decay;
> +				ti,regulator-step-size-25mv;
> +			};
> +		};
> +	};
> -- 
> 1.9.1
> 

Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 515 bytes --]

On Thu, Nov 19, 2015 at 05:01:41PM -0600, Andrew F. Davis wrote:
> Add support for TPS65086 PMIC regulators.
> 
> The regulators set consists of 3 Step-down Controllers, 3 Step-down
> Converters, 3 LDOs, 3 Load Switches, and a Sink and Source LDO. The
> output voltages are configurable and are meant to supply power to a
> SoC and/or other components.

An earlier version of this patch has already been applied, please don't
resend already applied patches but send incremental patches with any
changes.

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Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Andrew F. Davis]

On 11/21/2015 07:37 AM, Mark Brown wrote:
> On Thu, Nov 19, 2015 at 05:01:41PM -0600, Andrew F. Davis wrote:
>> Add support for TPS65086 PMIC regulators.
>>
>> The regulators set consists of 3 Step-down Controllers, 3 Step-down
>> Converters, 3 LDOs, 3 Load Switches, and a Sink and Source LDO. The
>> output voltages are configurable and are meant to supply power to a
>> SoC and/or other components.
>
> An earlier version of this patch has already been applied, please don't
> resend already applied patches but send incremental patches with any
> changes.
>

Odd, I didn't seem to get any message for this getting applied. Looks
like only a couple lines difference from the version in the regulators
branch, I don't imagine you are able to rebase that with these changes?

Anyway the reason that line needed changed is over a confusion in
what the 'of_node' does in 'struct regulator_config'. The description
seems to make it seem like it is the node that gets checked for
init data.

> * @of_node: OpenFirmware node to parse for device tree bindings (may be
> *           NULL).

But the 'of_node' that is actually searched is the one given in
regulator_config->dev->of_node. Is this intended behavior (drivers
assume it is so it probably has to be now) and if so, the above
description might need to be clarified as too what that 'of_node'
pointer really does?

Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Mark Brown]

[-- Attachment #1: Type: text/plain, Size: 1425 bytes --]

On Sat, Nov 21, 2015 at 02:40:50PM -0600, Andrew F. Davis wrote:
> On 11/21/2015 07:37 AM, Mark Brown wrote:

> >An earlier version of this patch has already been applied, please don't
> >resend already applied patches but send incremental patches with any
> >changes.

> Odd, I didn't seem to get any message for this getting applied. Looks
> like only a couple lines difference from the version in the regulators
> branch, I don't imagine you are able to rebase that with these changes?

As a matter of policy I try to avoid rewriting history unless it is
really required.

> Anyway the reason that line needed changed is over a confusion in
> what the 'of_node' does in 'struct regulator_config'. The description
> seems to make it seem like it is the node that gets checked for
> init data.

The current behaviour is the intended behaviour.

> >* @of_node: OpenFirmware node to parse for device tree bindings (may be
> >*           NULL).

> But the 'of_node' that is actually searched is the one given in
> regulator_config->dev->of_node. Is this intended behavior (drivers
> assume it is so it probably has to be now) and if so, the above
> description might need to be clarified as too what that 'of_node'
> pointer really does?

Please submit a patch with any clarification you think is needed.
of_node is the name of the container subnode of the main node for the
device where we look for init data - both are used.

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Re: [PATCH v4 1/4] Documentation: tps65086: Add DT bindings for the TPS65086 PMIC

[Lee Jones]

On Thu, 19 Nov 2015, Andrew F. Davis wrote:

> The TPS65086 PMIC contains several regulators and a GPO controller.
> Add bindings for the TPS65086 PMIC.
> 
> Signed-off-by: Andrew F. Davis <afd@ti.com>
> ---
>  Documentation/devicetree/bindings/mfd/tps65086.txt | 55 ++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/tps65086.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/tps65086.txt b/Documentation/devicetree/bindings/mfd/tps65086.txt
> new file mode 100644
> index 0000000..6b50613
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/tps65086.txt
> @@ -0,0 +1,55 @@
> +* TPS65086 Power Management Integrated Circuit bindings

s/Circuit/Circuit (PMIC)/

> +Required properties:
> + - compatible		: Should be "ti,tps65086".
> + - reg			: I2C slave address.
> + - interrupt-parent	: Phandle to he parent interrupt controller.

s/he/the/

> + - interrupts		: The interrupt line the device is connected to.
> + - interrupt-controller	: Marks the device node as an interrupt controller.
> + - #interrupt-cells	: The number of cells to describe an IRQ, should be 2.
> +			    The first cell is the IRQ number.
> +			    The second cell is the flags, encoded as trigger
> +			    masks from ../interrupt-controller/interrupts.txt.
> + - gpio-controller      : Marks the device node as a GPIO Controller.
> + - #gpio-cells          : Should be two.  The first cell is the pin number and
> +                            the second cell is used to specify flags.
> +                            See ../gpio/gpio.txt for more information.
> + - regulators:          : List of child nodes that specify the regulator
> +                            initialization data. Child nodes must be named
> +                            after their hardware counterparts: buck[1-6],
> +                            ldoa[1-3], swa1, swb[1-2], and vtt. Each child
> +                            nodes is defined using the standard binding for

s/is/are/

> +                            regulators and the optional regulator properties
> +                            defined below.
> +
> +Optional regulator properties:
> + - ti,regulator-step-size-25mv	: This is applicable for buck[1,2,6], set this
> +				    if the regulator is factory set with a 25mv
> +				    step voltage mapping.
> + - ti,regulator-decay		: This is applicable for buck[1-6], set this if
> +				    the output needs to decay, default is for
> +				    the output to slew down.
> +
> +Example:
> +
> +	pmic: tps65086@5e {
> +		compatible = "ti,tps65086";
> +		reg = <0x5e>;
> +		interrupt-parent = <&gpio1>;
> +		interrupts = <28 IRQ_TYPE_LEVEL_LOW>;
> +		interrupt-controller;
> +		#interrupt-cells = <2>;
> +		gpio-controller;
> +		#gpio-cells = <2>;
> +
> +		regulators {
> +			buck1 {
> +				regulator-name = "vcc1";
> +				regulator-min-microvolt = <1600000>;
> +				regulator-max-microvolt = <1600000>;
> +				regulator-boot-on;
> +				ti,regulator-decay;
> +				ti,regulator-step-size-25mv;
> +			};
> +		};
> +	};

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH v4 2/4] mfd: tps65086: Add driver for the TPS65086 PMIC

[Lee Jones]

On Thu, 19 Nov 2015, Andrew F. Davis wrote:

> Add support for the TPS65912 device. It provides communication
> through I2C and contains the following components:
> 
>  - Regulators
>  - Load switches
>  - GPO controller
> 
> Signed-off-by: Andrew F. Davis <afd@ti.com>
> ---
>  drivers/mfd/Kconfig          |  13 ++++
>  drivers/mfd/Makefile         |   1 +
>  drivers/mfd/tps65086.c       | 150 +++++++++++++++++++++++++++++++++++++++++++
>  include/linux/mfd/tps65086.h | 118 ++++++++++++++++++++++++++++++++++
>  4 files changed, 282 insertions(+)
>  create mode 100644 drivers/mfd/tps65086.c
>  create mode 100644 include/linux/mfd/tps65086.h

For my own reference:

  Acked-by: Lee Jones <lee.jones@linaro.org>

> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 4d92df6..232a911 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -1106,6 +1106,19 @@ config TPS6507X
>  	  This driver can also be built as a module.  If so, the module
>  	  will be called tps6507x.
>  
> +config MFD_TPS65086
> +	tristate "TI TPS65086 Power Management Integrated Chips (PMICs)"
> +	select REGMAP
> +	select REGMAP_IRQ
> +	select REGMAP_I2C
> +	depends on I2C
> +	help
> +	  If you say yes here you get support for the TPS65086 series of
> +	  Power Management chips.
> +	  This driver provides common support for accessing the device,
> +	  additional drivers must be enabled in order to use the
> +	  functionality of the device.
> +
>  config TPS65911_COMPARATOR
>  	tristate
>  
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index a8b76b8..3dcfec6 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -66,6 +66,7 @@ obj-$(CONFIG_MFD_WM8994)	+= wm8994-core.o wm8994-irq.o wm8994-regmap.o
>  obj-$(CONFIG_TPS6105X)		+= tps6105x.o
>  obj-$(CONFIG_TPS65010)		+= tps65010.o
>  obj-$(CONFIG_TPS6507X)		+= tps6507x.o
> +obj-$(CONFIG_MFD_TPS65086)	+= tps65086.o
>  obj-$(CONFIG_MFD_TPS65217)	+= tps65217.o
>  obj-$(CONFIG_MFD_TPS65218)	+= tps65218.o
>  obj-$(CONFIG_MFD_TPS65910)	+= tps65910.o
> diff --git a/drivers/mfd/tps65086.c b/drivers/mfd/tps65086.c
> new file mode 100644
> index 0000000..e1edfc0
> --- /dev/null
> +++ b/drivers/mfd/tps65086.c
> @@ -0,0 +1,150 @@
> +/*
> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@ti.com>
> + *
> + * 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.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether expressed or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License version 2 for more details.
> + *
> + * Based on the TPS65912 driver
> + */
> +
> +#include <linux/i2c.h>
> +#include <linux/interrupt.h>
> +#include <linux/mfd/core.h>
> +#include <linux/module.h>
> +
> +#include <linux/mfd/tps65086.h>
> +
> +static const struct mfd_cell tps65086_cells[] = {
> +	{ .name = "tps65086-regulator", },
> +	{ .name = "tps65086-gpio", },
> +};
> +
> +static const struct regmap_range tps65086_yes_ranges[] = {
> +	regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
> +	regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
> +	regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
> +	regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
> +};
> +
> +static const struct regmap_access_table tps65086_volatile_table = {
> +	.yes_ranges = tps65086_yes_ranges,
> +	.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
> +};
> +
> +static const struct regmap_config tps65086_regmap_config = {
> +	.reg_bits = 8,
> +	.val_bits = 8,
> +	.cache_type = REGCACHE_RBTREE,
> +	.volatile_table = &tps65086_volatile_table,
> +};
> +
> +static const struct regmap_irq tps65086_irqs[] = {
> +	REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
> +	REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
> +	REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
> +};
> +
> +static struct regmap_irq_chip tps65086_irq_chip = {
> +	.name = "tps65086",
> +	.status_base = TPS65086_IRQ,
> +	.mask_base = TPS65086_IRQ_MASK,
> +	.ack_base = TPS65086_IRQ,
> +	.init_ack_masked = true,
> +	.num_regs = 1,
> +	.irqs = tps65086_irqs,
> +	.num_irqs = ARRAY_SIZE(tps65086_irqs),
> +};
> +
> +static const struct of_device_id tps65086_of_match_table[] = {
> +	{ .compatible = "ti,tps65086", },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
> +
> +static int tps65086_probe(struct i2c_client *client,
> +			  const struct i2c_device_id *ids)
> +{
> +	struct tps65086 *tps;
> +	unsigned int version;
> +	int ret;
> +
> +	tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
> +	if (!tps)
> +		return -ENOMEM;
> +
> +	i2c_set_clientdata(client, tps);
> +	tps->dev = &client->dev;
> +	tps->irq = client->irq;
> +
> +	tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
> +	if (IS_ERR(tps->regmap)) {
> +		dev_err(tps->dev, "Failed to initialize register map\n");
> +		return PTR_ERR(tps->regmap);
> +	}
> +
> +	ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
> +	if (ret) {
> +		dev_err(tps->dev, "Failed to read revision register\n");
> +		return ret;
> +	}
> +
> +	dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
> +		 (version & TPS65086_DEVICEID_PART_MASK),
> +		 (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
> +		 (version & TPS65086_DEVICEID_REV_MASK) >> 6);
> +
> +	ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
> +				  &tps65086_irq_chip, &tps->irq_data);
> +	if (ret) {
> +		dev_err(tps->dev, "Failed to register IRQ chip\n");
> +		return ret;
> +	}
> +
> +	ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
> +			      ARRAY_SIZE(tps65086_cells), NULL, 0,
> +			      regmap_irq_get_domain(tps->irq_data));
> +	if (ret) {
> +		regmap_del_irq_chip(tps->irq, tps->irq_data);
> +		return ret;
> +	}
> +
> +	return 0;
> +}
> +
> +static int tps65086_remove(struct i2c_client *client)
> +{
> +	struct tps65086 *tps = i2c_get_clientdata(client);
> +
> +	regmap_del_irq_chip(tps->irq, tps->irq_data);
> +
> +	return 0;
> +}
> +
> +static const struct i2c_device_id tps65086_id_table[] = {
> +	{ "tps65086", 0 },
> +	{ /* sentinel */ }
> +};
> +MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
> +
> +static struct i2c_driver tps65086_driver = {
> +	.driver		= {
> +		.name	= "tps65086",
> +		.of_match_table = tps65086_of_match_table,
> +	},
> +	.probe		= tps65086_probe,
> +	.remove		= tps65086_remove,
> +	.id_table       = tps65086_id_table,
> +};
> +module_i2c_driver(tps65086_driver);
> +
> +MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
> +MODULE_DESCRIPTION("TPS65086 PMIC Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/include/linux/mfd/tps65086.h b/include/linux/mfd/tps65086.h
> new file mode 100644
> index 0000000..0c50452
> --- /dev/null
> +++ b/include/linux/mfd/tps65086.h
> @@ -0,0 +1,118 @@
> +/*
> + * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * Author: Andrew F. Davis <afd@ti.com>
> + *
> + * 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.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any
> + * kind, whether expressed or implied; without even the implied warranty
> + * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
> + * GNU General Public License version 2 for more details.
> + *
> + * Based on the TPS65912 driver
> + */
> +
> +#ifndef __LINUX_MFD_TPS65086_H
> +#define __LINUX_MFD_TPS65086_H
> +
> +#include <linux/device.h>
> +#include <linux/regmap.h>
> +
> +/* List of registers for TPS65086 */
> +#define TPS65086_DEVICEID		0x01
> +#define TPS65086_IRQ			0x02
> +#define TPS65086_IRQ_MASK		0x03
> +#define TPS65086_PMICSTAT		0x04
> +#define TPS65086_SHUTDNSRC		0x05
> +#define TPS65086_BUCK1CTRL		0x20
> +#define TPS65086_BUCK2CTRL		0x21
> +#define TPS65086_BUCK3DECAY		0x22
> +#define TPS65086_BUCK3VID		0x23
> +#define TPS65086_BUCK3SLPCTRL		0x24
> +#define TPS65086_BUCK4CTRL		0x25
> +#define TPS65086_BUCK5CTRL		0x26
> +#define TPS65086_BUCK6CTRL		0x27
> +#define TPS65086_LDOA2CTRL		0x28
> +#define TPS65086_LDOA3CTRL		0x29
> +#define TPS65086_DISCHCTRL1		0x40
> +#define TPS65086_DISCHCTRL2		0x41
> +#define TPS65086_DISCHCTRL3		0x42
> +#define TPS65086_PG_DELAY1		0x43
> +#define TPS65086_FORCESHUTDN		0x91
> +#define TPS65086_BUCK1SLPCTRL		0x92
> +#define TPS65086_BUCK2SLPCTRL		0x93
> +#define TPS65086_BUCK4VID		0x94
> +#define TPS65086_BUCK4SLPVID		0x95
> +#define TPS65086_BUCK5VID		0x96
> +#define TPS65086_BUCK5SLPVID		0x97
> +#define TPS65086_BUCK6VID		0x98
> +#define TPS65086_BUCK6SLPVID		0x99
> +#define TPS65086_LDOA2VID		0x9A
> +#define TPS65086_LDOA3VID		0x9B
> +#define TPS65086_BUCK123CTRL		0x9C
> +#define TPS65086_PG_DELAY2		0x9D
> +#define TPS65086_PIN_EN_MASK1		0x9E
> +#define TPS65086_PIN_EN_MASK2		0x9F
> +#define TPS65086_SWVTT_EN		0x9F
> +#define TPS65086_PIN_EN_OVR1		0xA0
> +#define TPS65086_PIN_EN_OVR2		0xA1
> +#define TPS65086_GPOCTRL		0xA1
> +#define TPS65086_PWR_FAULT_MASK1	0xA2
> +#define TPS65086_PWR_FAULT_MASK2	0xA3
> +#define TPS65086_GPO1PG_CTRL1		0xA4
> +#define TPS65086_GPO1PG_CTRL2		0xA5
> +#define TPS65086_GPO4PG_CTRL1		0xA6
> +#define TPS65086_GPO4PG_CTRL2		0xA7
> +#define TPS65086_GPO2PG_CTRL1		0xA8
> +#define TPS65086_GPO2PG_CTRL2		0xA9
> +#define TPS65086_GPO3PG_CTRL1		0xAA
> +#define TPS65086_GPO3PG_CTRL2		0xAB
> +#define TPS65086_LDOA1CTRL		0xAE
> +#define TPS65086_PG_STATUS1		0xB0
> +#define TPS65086_PG_STATUS2		0xB1
> +#define TPS65086_PWR_FAULT_STATUS1	0xB2
> +#define TPS65086_PWR_FAULT_STATUS2	0xB3
> +#define TPS65086_TEMPCRIT		0xB4
> +#define TPS65086_TEMPHOT		0xB5
> +#define TPS65086_OC_STATUS		0xB6
> +
> +/* IRQ Register field definitions */
> +#define TPS65086_IRQ_DIETEMP_MASK	BIT(0)
> +#define TPS65086_IRQ_SHUTDN_MASK	BIT(3)
> +#define TPS65086_IRQ_FAULT_MASK		BIT(7)
> +
> +/* DEVICEID Register field definitions */
> +#define TPS65086_DEVICEID_PART_MASK	GENMASK(3, 0)
> +#define TPS65086_DEVICEID_OTP_MASK	GENMASK(5, 4)
> +#define TPS65086_DEVICEID_REV_MASK	GENMASK(7, 6)
> +
> +/* VID Masks */
> +#define BUCK_VID_MASK			GENMASK(7, 1)
> +#define VDOA1_VID_MASK			GENMASK(4, 1)
> +#define VDOA23_VID_MASK			GENMASK(3, 0)
> +
> +/* Define the TPS65086 IRQ numbers */
> +enum tps65086_irqs {
> +	TPS65086_IRQ_DIETEMP,
> +	TPS65086_IRQ_SHUTDN,
> +	TPS65086_IRQ_FAULT,
> +};
> +
> +/*
> + * struct tps65086 - state holder for the tps65086 driver
> + *
> + * Device data may be used to access the TPS65086 chip
> + */
> +struct tps65086 {
> +	struct device *dev;
> +	struct regmap *regmap;
> +
> +	/* IRQ Data */
> +	int irq;
> +	struct regmap_irq_chip_data *irq_data;
> +};
> +
> +#endif /*  __LINUX_MFD_TPS65086_H */

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Andrew F. Davis]

On 11/22/2015 07:13 AM, Mark Brown wrote:
> On Sat, Nov 21, 2015 at 02:40:50PM -0600, Andrew F. Davis wrote:
>> On 11/21/2015 07:37 AM, Mark Brown wrote:
>
>>> An earlier version of this patch has already been applied, please don't
>>> resend already applied patches but send incremental patches with any
>>> changes.
>
>> Odd, I didn't seem to get any message for this getting applied. Looks
>> like only a couple lines difference from the version in the regulators
>> branch, I don't imagine you are able to rebase that with these changes?
>
> As a matter of policy I try to avoid rewriting history unless it is
> really required.
>

Makes sense, I'll push the patch once the rest of this driver gets
pulled in-case more changes are needed.

>> Anyway the reason that line needed changed is over a confusion in
>> what the 'of_node' does in 'struct regulator_config'. The description
>> seems to make it seem like it is the node that gets checked for
>> init data.
>
> The current behaviour is the intended behaviour.
>
>>> * @of_node: OpenFirmware node to parse for device tree bindings (may be
>>> *           NULL).
>
>> But the 'of_node' that is actually searched is the one given in
>> regulator_config->dev->of_node. Is this intended behavior (drivers
>> assume it is so it probably has to be now) and if so, the above
>> description might need to be clarified as too what that 'of_node'
>> pointer really does?
>
> Please submit a patch with any clarification you think is needed.
> of_node is the name of the container subnode of the main node for the
> device where we look for init data - both are used.
>

But which of_node?

regulator_config->of_node
regulator_config->dev->of_node

The second is the only one I see getting used, the first is only
used when drivers provide their own init_data and automatic init
data getting fails.

The same issue is present in GPIO (gpiolib.c:612), where the of_node
in the config takes precedence over the one in config->dev, the
opposite is true for regulators, this is very confusing and should be
standardized.

Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Mark Brown]

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On Mon, Nov 23, 2015 at 11:40:55AM -0600, Andrew F. Davis wrote:

> But which of_node?

> regulator_config->of_node
> regulator_config->dev->of_node

> The second is the only one I see getting used, the first is only
> used when drivers provide their own init_data and automatic init
> data getting fails.

The configuration of_node is there to override the device one if there
were some reason to do it.  This should only happen in a situation where
we weren't able to use the core parsing, with modern drivers it
indicates a problematic binding so the code deliberately doesn't handle
it.  Anything with a problematic binding will have generated the
init_data in driver code anyway.  If we come up with a reason to extend
the interface we can do that but for now there is no need.

> The same issue is present in GPIO (gpiolib.c:612), where the of_node

Line number references are complately unhelpful if you don't say what
you're looking at (for me that's a call to irq_find_mapping() which I'm
guessing isn't what you were talking about).

> in the config takes precedence over the one in config->dev, the
> opposite is true for regulators, this is very confusing and should be
> standardized.

No, they both do the same thing.

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Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Andrew F. Davis]

On 11/23/2015 01:00 PM, Mark Brown wrote:
> On Mon, Nov 23, 2015 at 11:40:55AM -0600, Andrew F. Davis wrote:
>
>> But which of_node?
>
>> regulator_config->of_node
>> regulator_config->dev->of_node
>
>> The second is the only one I see getting used, the first is only
>> used when drivers provide their own init_data and automatic init
>> data getting fails.
>
> The configuration of_node is there to override the device one if there
> were some reason to do it.  This should only happen in a situation where
> we weren't able to use the core parsing, with modern drivers it
> indicates a problematic binding so the code deliberately doesn't handle
> it.  Anything with a problematic binding will have generated the
> init_data in driver code anyway.  If we come up with a reason to extend
> the interface we can do that but for now there is no need.
>

Right, so this is the kind of description that would be nice with the
declaration.

>> The same issue is present in GPIO (gpiolib.c:612), where the of_node
>
> Line number references are complately unhelpful if you don't say what
> you're looking at (for me that's a call to irq_find_mapping() which I'm
> guessing isn't what you were talking about).
>

My bad, that is for v4.4-rc1 line 694. The lines are:

> 	of_node = gpiochip->dev->of_node;
> #ifdef CONFIG_OF_GPIO
> 	/*
> 	 * If the gpiochip has an assigned OF node this takes precedence
> 	 * FIXME: get rid of this and use gpiochip->dev->of_node everywhere
> 	 */
> 	if (gpiochip->of_node)
> 		of_node = gpiochip->of_node;
> #endif

So, if we have a config->of_node it is used over config->dev->of_node.

>> in the config takes precedence over the one in config->dev, the
>> opposite is true for regulators, this is very confusing and should be
>> standardized.
>
> No, they both do the same thing.
>

I don't see that, config->dev->of_node is checked for the init data in
regulator_of_get_init_data, then config->of_node is then ignored if that
succeeds.

Re: [PATCH v4 3/4] regulator: tps65086: Add regulator driver for the TPS65086 PMIC

[Mark Brown]

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On Mon, Nov 23, 2015 at 01:18:15PM -0600, Andrew F. Davis wrote:

> Right, so this is the kind of description that would be nice with the
> declaration.

Feel free to send patches for the documentation, bearing in mind that
there is a limit to how large we cna make it.

> >>in the config takes precedence over the one in config->dev, the
> >>opposite is true for regulators, this is very confusing and should be
> >>standardized.

> >No, they both do the same thing.

> I don't see that, config->dev->of_node is checked for the init data in
> regulator_of_get_init_data, then config->of_node is then ignored if that
> succeeds.

Right, like I say this is because nobody should ever actually be using
that capability if they also have good bindings.  If anyone did have a
sensible use case that'd be where it would go but as things stand they
will be pushed to do the right thing.

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Re: [PATCH v4 4/4] gpio: tps65086: Add GPO driver for the TPS65086 PMIC

[Linus Walleij]

On Fri, Nov 20, 2015 at 12:01 AM, Andrew F. Davis <afd@ti.com> wrote:

> Add support for the TPS65086 PMIC GPOs.
>
> TPS65086 has four configurable GPOs that can be used for several
> purposes. These are output only.
>
> Signed-off-by: Andrew F. Davis <afd@ti.com>
(...)
> +       gpio->tps = dev_get_drvdata(pdev->dev.parent);
> +       gpio->chip = template_chip;
> +       gpio->chip.dev = gpio->tps->dev;

We have renamed this to .parent in linux-next and it needs to
be altered to compile upstream.

Yours,
Linus Walleij