Merge tag 'regulator-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator updates from Mark Brown:
 "The bulk of the standout changes in this release are cleanups, with
  the core work being a combination of factoring out common code into
  helpers and the completion of the conversion of the core to use GPIO
  descriptors.

  Summary:

   - Addition of helper functions for current limits and conversion of
     drivers to use them by Axel Lin.

   - Lots and lots of cleanups from Axel Lin.

   - Conversion of the core to use GPIO descriptors rather than numbers
     by Linus Walleij.

   - New drivers for Maxim MAX77650 and ROHM BD70528"

* tag 'regulator-v5.1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator: (131 commits)
  regulator: mc13xxx: Constify regulator_ops variables
  regulator: palmas: Constify palmas_smps_ramp_delay array
  regulator: wm831x-dcdc: Convert to use regulator_set/get_current_limit_regmap
  regulator: pv88090: Convert to use regulator_set/get_current_limit_regmap
  regulator: pv88080: Convert to use regulator_set/get_current_limit_regmap
  regulator: pv88060: Convert to use regulator_set/get_current_limit_regmap
  regulator: max77650: Convert to use regulator_set/get_current_limit_regmap
  regulator: lp873x: Convert to use regulator_set/get_current_limit_regmap
  regulator: lp872x: Convert to use regulator_set/get_current_limit_regmap
  regulator: da9210: Convert to use regulator_set/get_current_limit_regmap
  regulator: da9055: Convert to use regulator_set/get_current_limit_regmap
  regulator: core: Add set/get_current_limit helpers for regmap users
  regulator: Fix comment for csel_reg and csel_mask
  regulator: stm32-vrefbuf: add power management support
  regulator: 88pm8607: Remove unused fields from struct pm8607_regulator_info
  regulator: 88pm8607: Simplify pm8607_list_voltage implementation
  regulator: cpcap: Constify omap4_regulators and xoom_regulators
  regulator: cpcap: Remove unused vsel_shift from struct cpcap_regulator
  dt-bindings: regulator: tps65218: rectify units of LS3
  dt-bindings: regulator: add LS2 load switch documentation
  ...

4 files changed, 26 insertions, 35 deletions

diff --git a/include/linux/mfd/tps65218.h b/include/linux/mfd/tps65218.h
index c204d9a79436..45cdcd0fee53 100644
--- a/include/linux/mfd/tps65218.h
+++ b/include/linux/mfd/tps65218.h
@@ -208,6 +208,7 @@ enum tps65218_regulator_id {
 	/* LDOs */
 	TPS65218_LDO_1,
 	/* LS's */
+	TPS65218_LS_2,
 	TPS65218_LS_3,
 };
 
@@ -218,7 +219,7 @@ enum tps65218_regulator_id {
 /* Number of LDO voltage regulators available */
 #define TPS65218_NUM_LDO		1
 /* Number of total LS current regulators available */
-#define TPS65218_NUM_LS			1
+#define TPS65218_NUM_LS			2
 /* Number of total regulators available */
 #define TPS65218_NUM_REGULATOR		(TPS65218_NUM_DCDC + TPS65218_NUM_LDO \
 					 + TPS65218_NUM_LS)
diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 389bcaf7900f..377da2357118 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -264,6 +264,7 @@ enum regulator_type {
  * @continuous_voltage_range: Indicates if the regulator can set any
  *                            voltage within constrains range.
  * @n_voltages: Number of selectors available for ops.list_voltage().
+ * @n_current_limits: Number of selectors available for current limits
  *
  * @min_uV: Voltage given by the lowest selector (if linear mapping)
  * @uV_step: Voltage increase with each selector (if linear mapping)
@@ -278,14 +279,15 @@ enum regulator_type {
  * @n_linear_ranges: Number of entries in the @linear_ranges (and in
  *		     linear_range_selectors if used) table(s).
  * @volt_table: Voltage mapping table (if table based mapping)
+ * @curr_table: Current limit mapping table (if table based mapping)
  *
  * @vsel_range_reg: Register for range selector when using pickable ranges
  *		    and regulator_regmap_X_voltage_X_pickable functions.
  * @vsel_range_mask: Mask for register bitfield used for range selector
  * @vsel_reg: Register for selector when using regulator_regmap_X_voltage_
  * @vsel_mask: Mask for register bitfield used for selector
- * @csel_reg: Register for TPS65218 LS3 current regulator
- * @csel_mask: Mask for TPS65218 LS3 current regulator
+ * @csel_reg: Register for current limit selector using regmap set_current_limit
+ * @csel_mask: Mask for register bitfield used for current limit selector
  * @apply_reg: Register for initiate voltage change on the output when
  *                using regulator_set_voltage_sel_regmap
  * @apply_bit: Register bitfield used for initiate voltage change on the
@@ -333,6 +335,7 @@ struct regulator_desc {
 	int id;
 	unsigned int continuous_voltage_range:1;
 	unsigned n_voltages;
+	unsigned int n_current_limits;
 	const struct regulator_ops *ops;
 	int irq;
 	enum regulator_type type;
@@ -351,6 +354,7 @@ struct regulator_desc {
 	int n_linear_ranges;
 
 	const unsigned int *volt_table;
+	const unsigned int *curr_table;
 
 	unsigned int vsel_range_reg;
 	unsigned int vsel_range_mask;
@@ -401,13 +405,7 @@ struct regulator_desc {
  *           NULL).
  * @regmap: regmap to use for core regmap helpers if dev_get_regmap() is
  *          insufficient.
- * @ena_gpio_initialized: GPIO controlling regulator enable was properly
- *                        initialized, meaning that >= 0 is a valid gpio
- *                        identifier and < 0 is a non existent gpio.
- * @ena_gpio: GPIO controlling regulator enable.
- * @ena_gpiod: GPIO descriptor controlling regulator enable.
- * @ena_gpio_invert: Sense for GPIO enable control.
- * @ena_gpio_flags: Flags to use when calling gpio_request_one()
+ * @ena_gpiod: GPIO controlling regulator enable.
  */
 struct regulator_config {
 	struct device *dev;
@@ -416,11 +414,7 @@ struct regulator_config {
 	struct device_node *of_node;
 	struct regmap *regmap;
 
-	bool ena_gpio_initialized;
-	int ena_gpio;
 	struct gpio_desc *ena_gpiod;
-	unsigned int ena_gpio_invert:1;
-	unsigned int ena_gpio_flags;
 };
 
 /*
@@ -503,6 +497,7 @@ int regulator_notifier_call_chain(struct regulator_dev *rdev,
 
 void *rdev_get_drvdata(struct regulator_dev *rdev);
 struct device *rdev_get_dev(struct regulator_dev *rdev);
+struct regmap *rdev_get_regmap(struct regulator_dev *rdev);
 int rdev_get_id(struct regulator_dev *rdev);
 
 int regulator_mode_to_status(unsigned int);
@@ -543,9 +538,18 @@ int regulator_set_pull_down_regmap(struct regulator_dev *rdev);
 
 int regulator_set_active_discharge_regmap(struct regulator_dev *rdev,
 					  bool enable);
+int regulator_set_current_limit_regmap(struct regulator_dev *rdev,
+				       int min_uA, int max_uA);
+int regulator_get_current_limit_regmap(struct regulator_dev *rdev);
 void *regulator_get_init_drvdata(struct regulator_init_data *reg_init_data);
 
 void regulator_lock(struct regulator_dev *rdev);
 void regulator_unlock(struct regulator_dev *rdev);
 
+/*
+ * Helper functions intended to be used by regulator drivers prior registering
+ * their regulators.
+ */
+int regulator_desc_list_voltage_linear_range(const struct regulator_desc *desc,
+					     unsigned int selector);
 #endif
diff --git a/include/linux/regulator/fixed.h b/include/linux/regulator/fixed.h
index 1a4340ed8e2b..f10140da7145 100644
--- a/include/linux/regulator/fixed.h
+++ b/include/linux/regulator/fixed.h
@@ -25,14 +25,6 @@ struct regulator_init_data;
  * @input_supply:	Name of the input regulator supply
  * @microvolts:		Output voltage of regulator
  * @startup_delay:	Start-up time in microseconds
- * @gpio_is_open_drain: Gpio pin is open drain or normal type.
- *			If it is open drain type then HIGH will be set
- *			through PULL-UP with setting gpio as input
- *			and low will be set as gpio-output with driven
- *			to low. For non-open-drain case, the gpio will
- *			will be in output and drive to low/high accordingly.
- * @enable_high:	Polarity of enable GPIO
- *			1 = Active high, 0 = Active low
  * @enabled_at_boot:	Whether regulator has been enabled at
  * 			boot or not. 1 = Yes, 0 = No
  * 			This is used to keep the regulator at
@@ -48,8 +40,6 @@ struct fixed_voltage_config {
 	const char *input_supply;
 	int microvolts;
 	unsigned startup_delay;
-	unsigned gpio_is_open_drain:1;
-	unsigned enable_high:1;
 	unsigned enabled_at_boot:1;
 	struct regulator_init_data *init_data;
 };
diff --git a/include/linux/regulator/gpio-regulator.h b/include/linux/regulator/gpio-regulator.h
index 19fbd267406d..11cd6375215d 100644
--- a/include/linux/regulator/gpio-regulator.h
+++ b/include/linux/regulator/gpio-regulator.h
@@ -21,6 +21,8 @@
 #ifndef __REGULATOR_GPIO_H
 #define __REGULATOR_GPIO_H
 
+#include <linux/gpio/consumer.h>
+
 struct regulator_init_data;
 
 enum regulator_type;
@@ -44,18 +46,14 @@ struct gpio_regulator_state {
 /**
  * struct gpio_regulator_config - config structure
  * @supply_name:	Name of the regulator supply
- * @enable_gpio:	GPIO to use for enable control
- *			set to -EINVAL if not used
- * @enable_high:	Polarity of enable GPIO
- *			1 = Active high, 0 = Active low
  * @enabled_at_boot:	Whether regulator has been enabled at
  *			boot or not. 1 = Yes, 0 = No
  *			This is used to keep the regulator at
  *			the default state
  * @startup_delay:	Start-up time in microseconds
- * @gpios:		Array containing the gpios needed to control
- *			the setting of the regulator
- * @nr_gpios:		Number of gpios
+ * @gflags:		Array of GPIO configuration flags for initial
+ *			states
+ * @ngpios:		Number of GPIOs and configurations available
  * @states:		Array of gpio_regulator_state entries describing
  *			the gpio state for specific voltages
  * @nr_states:		Number of states available
@@ -69,13 +67,11 @@ struct gpio_regulator_state {
 struct gpio_regulator_config {
 	const char *supply_name;
 
-	int enable_gpio;
-	unsigned enable_high:1;
 	unsigned enabled_at_boot:1;
 	unsigned startup_delay;
 
-	struct gpio *gpios;
-	int nr_gpios;
+	enum gpiod_flags *gflags;
+	int ngpios;
 
 	struct gpio_regulator_state *states;
 	int nr_states;