This driver does not use any symbols from <linux/gpio.h> no <linux/gpio/consumer.h> so just drop the includes. Cc: Javier Martinez Canillas <javierm@redhat.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Mark Brown <broonie@kernel.org>
		
			
				
	
	
		
			599 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
			
		
		
	
	
			599 lines
		
	
	
		
			18 KiB
		
	
	
	
		
			C
		
	
	
	
	
	
| // SPDX-License-Identifier: GPL-2.0+
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| //
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| // max77802.c - Regulator driver for the Maxim 77802
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| //
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| // Copyright (C) 2013-2014 Google, Inc
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| // Simon Glass <sjg@chromium.org>
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| //
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| // Copyright (C) 2012 Samsung Electronics
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| // Chiwoong Byun <woong.byun@samsung.com>
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| // Jonghwa Lee <jonghwa3.lee@samsung.com>
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| //
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| // This driver is based on max8997.c
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| 
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| #include <linux/kernel.h>
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| #include <linux/bug.h>
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| #include <linux/err.h>
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| #include <linux/slab.h>
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| #include <linux/module.h>
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| #include <linux/platform_device.h>
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| #include <linux/regulator/driver.h>
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| #include <linux/regulator/machine.h>
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| #include <linux/regulator/of_regulator.h>
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| #include <linux/mfd/max77686.h>
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| #include <linux/mfd/max77686-private.h>
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| #include <dt-bindings/regulator/maxim,max77802.h>
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| 
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| /* Default ramp delay in case it is not manually set */
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| #define MAX77802_RAMP_DELAY		100000		/* uV/us */
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| 
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| #define MAX77802_OPMODE_SHIFT_LDO	6
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| #define MAX77802_OPMODE_BUCK234_SHIFT	4
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| #define MAX77802_OPMODE_MASK		0x3
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| 
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| #define MAX77802_VSEL_MASK		0x3F
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| #define MAX77802_DVS_VSEL_MASK		0xFF
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| 
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| #define MAX77802_RAMP_RATE_MASK_2BIT	0xC0
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| #define MAX77802_RAMP_RATE_SHIFT_2BIT	6
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| #define MAX77802_RAMP_RATE_MASK_4BIT	0xF0
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| #define MAX77802_RAMP_RATE_SHIFT_4BIT	4
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| 
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| #define MAX77802_STATUS_OFF		0x0
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| #define MAX77802_OFF_PWRREQ		0x1
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| #define MAX77802_LP_PWRREQ		0x2
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| 
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| /* MAX77802 has two register formats: 2-bit and 4-bit */
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| static const unsigned int ramp_table_77802_2bit[] = {
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| 	12500,
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| 	25000,
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| 	50000,
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| 	100000,
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| };
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| 
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| static unsigned int ramp_table_77802_4bit[] = {
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| 	1000,	2000,	3030,	4000,
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| 	5000,	5880,	7140,	8330,
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| 	9090,	10000,	11110,	12500,
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| 	16670,	25000,	50000,	100000,
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| };
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| 
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| struct max77802_regulator_prv {
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| 	/* Array indexed by regulator id */
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| 	unsigned int opmode[MAX77802_REG_MAX];
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| };
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| 
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| static inline unsigned int max77802_map_mode(unsigned int mode)
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| {
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| 	return mode == MAX77802_OPMODE_NORMAL ?
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| 		REGULATOR_MODE_NORMAL : REGULATOR_MODE_STANDBY;
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| }
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| 
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| static int max77802_get_opmode_shift(int id)
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| {
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| 	if (id == MAX77802_BUCK1 || (id >= MAX77802_BUCK5 &&
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| 				     id <= MAX77802_BUCK10))
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| 		return 0;
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| 
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| 	if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4)
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| 		return MAX77802_OPMODE_BUCK234_SHIFT;
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| 
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| 	if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35)
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| 		return MAX77802_OPMODE_SHIFT_LDO;
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| 
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| 	return -EINVAL;
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| }
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| 
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| /**
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|  * max77802_set_suspend_disable - Disable the regulator during system suspend
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|  * @rdev: regulator to mark as disabled
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|  *
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|  * All regulators expect LDO 1, 3, 20 and 21 support OFF by PWRREQ.
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|  * Configure the regulator so the PMIC will turn it OFF during system suspend.
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|  */
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| static int max77802_set_suspend_disable(struct regulator_dev *rdev)
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| {
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| 	unsigned int val = MAX77802_OFF_PWRREQ;
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| 	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
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| 	int id = rdev_get_id(rdev);
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| 	int shift = max77802_get_opmode_shift(id);
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| 
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| 	max77802->opmode[id] = val;
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  rdev->desc->enable_mask, val << shift);
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| }
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| 
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| /*
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|  * Some LDOs support Low Power Mode while the system is running.
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|  *
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|  * LDOs 1, 3, 20, 21.
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|  */
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| static int max77802_set_mode(struct regulator_dev *rdev, unsigned int mode)
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| {
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| 	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
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| 	int id = rdev_get_id(rdev);
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| 	unsigned int val;
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| 	int shift = max77802_get_opmode_shift(id);
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| 
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| 	switch (mode) {
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| 	case REGULATOR_MODE_STANDBY:
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| 		val = MAX77802_OPMODE_LP;	/* ON in Low Power Mode */
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| 		break;
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| 	case REGULATOR_MODE_NORMAL:
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| 		val = MAX77802_OPMODE_NORMAL;	/* ON in Normal Mode */
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| 		break;
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| 	default:
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| 		dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
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| 			 rdev->desc->name, mode);
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| 		return -EINVAL;
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| 	}
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| 
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| 	max77802->opmode[id] = val;
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  rdev->desc->enable_mask, val << shift);
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| }
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| 
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| static unsigned max77802_get_mode(struct regulator_dev *rdev)
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| {
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| 	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
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| 	int id = rdev_get_id(rdev);
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| 
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| 	return max77802_map_mode(max77802->opmode[id]);
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| }
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| 
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| /**
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|  * max77802_set_suspend_mode - set regulator opmode when the system is suspended
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|  * @rdev: regulator to change mode
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|  * @mode: operating mode to be set
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|  *
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|  * Will set the operating mode for the regulators during system suspend.
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|  * This function is valid for the three different enable control logics:
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|  *
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|  * Enable Control Logic1 by PWRREQ (BUCK 2-4 and LDOs 2, 4-19, 22-35)
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|  * Enable Control Logic2 by PWRREQ (LDOs 1, 20, 21)
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|  * Enable Control Logic3 by PWRREQ (LDO 3)
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|  *
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|  * If setting the regulator mode fails, the function only warns but does
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|  * not return an error code to avoid the regulator core to stop setting
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|  * the operating mode for the remaining regulators.
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|  */
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| static int max77802_set_suspend_mode(struct regulator_dev *rdev,
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| 				     unsigned int mode)
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| {
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| 	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
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| 	int id = rdev_get_id(rdev);
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| 	unsigned int val;
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| 	int shift = max77802_get_opmode_shift(id);
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| 
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| 	/*
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| 	 * If the regulator has been disabled for suspend
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| 	 * then is invalid to try setting a suspend mode.
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| 	 */
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| 	if (max77802->opmode[id] == MAX77802_OFF_PWRREQ) {
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| 		dev_warn(&rdev->dev, "%s: is disabled, mode: 0x%x not set\n",
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| 			 rdev->desc->name, mode);
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| 		return 0;
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| 	}
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| 
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| 	switch (mode) {
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| 	case REGULATOR_MODE_STANDBY:
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| 		/*
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| 		 * If the regulator opmode is normal then enable
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| 		 * ON in Low Power Mode by PWRREQ. If the mode is
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| 		 * already Low Power then no action is required.
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| 		 */
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| 		if (max77802->opmode[id] == MAX77802_OPMODE_NORMAL)
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| 			val = MAX77802_LP_PWRREQ;
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| 		else
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| 			return 0;
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| 		break;
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| 	case REGULATOR_MODE_NORMAL:
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| 		/*
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| 		 * If the regulator operating mode is Low Power then
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| 		 * normal is not a valid opmode in suspend. If the
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| 		 * mode is already normal then no action is required.
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| 		 */
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| 		if (max77802->opmode[id] == MAX77802_OPMODE_LP)
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| 			dev_warn(&rdev->dev, "%s: in Low Power: 0x%x invalid\n",
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| 				 rdev->desc->name, mode);
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| 		return 0;
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| 	default:
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| 		dev_warn(&rdev->dev, "%s: regulator mode: 0x%x not supported\n",
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| 			 rdev->desc->name, mode);
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| 		return -EINVAL;
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| 	}
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| 
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  rdev->desc->enable_mask, val << shift);
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| }
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| 
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| static int max77802_enable(struct regulator_dev *rdev)
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| {
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| 	struct max77802_regulator_prv *max77802 = rdev_get_drvdata(rdev);
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| 	int id = rdev_get_id(rdev);
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| 	int shift = max77802_get_opmode_shift(id);
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| 
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| 	if (max77802->opmode[id] == MAX77802_OFF_PWRREQ)
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| 		max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
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| 
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  rdev->desc->enable_mask,
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| 				  max77802->opmode[id] << shift);
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| }
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| 
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| static int max77802_find_ramp_value(struct regulator_dev *rdev,
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| 				    const unsigned int limits[], int size,
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| 				    unsigned int ramp_delay)
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| {
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| 	int i;
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| 
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| 	for (i = 0; i < size; i++) {
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| 		if (ramp_delay <= limits[i])
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| 			return i;
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| 	}
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| 
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| 	/* Use maximum value for no ramp control */
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| 	dev_warn(&rdev->dev, "%s: ramp_delay: %d not supported, setting 100000\n",
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| 		 rdev->desc->name, ramp_delay);
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| 	return size - 1;
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| }
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| 
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| /* Used for BUCKs 2-4 */
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| static int max77802_set_ramp_delay_2bit(struct regulator_dev *rdev,
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| 					int ramp_delay)
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| {
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| 	int id = rdev_get_id(rdev);
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| 	unsigned int ramp_value;
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| 
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| 	if (id > MAX77802_BUCK4) {
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| 		dev_warn(&rdev->dev,
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| 			 "%s: regulator: ramp delay not supported\n",
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| 			 rdev->desc->name);
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| 		return -EINVAL;
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| 	}
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| 	ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_2bit,
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| 				ARRAY_SIZE(ramp_table_77802_2bit), ramp_delay);
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| 
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  MAX77802_RAMP_RATE_MASK_2BIT,
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| 				  ramp_value << MAX77802_RAMP_RATE_SHIFT_2BIT);
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| }
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| 
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| /* For BUCK1, 6 */
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| static int max77802_set_ramp_delay_4bit(struct regulator_dev *rdev,
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| 					    int ramp_delay)
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| {
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| 	unsigned int ramp_value;
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| 
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| 	ramp_value = max77802_find_ramp_value(rdev, ramp_table_77802_4bit,
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| 				ARRAY_SIZE(ramp_table_77802_4bit), ramp_delay);
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| 
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| 	return regmap_update_bits(rdev->regmap, rdev->desc->enable_reg,
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| 				  MAX77802_RAMP_RATE_MASK_4BIT,
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| 				  ramp_value << MAX77802_RAMP_RATE_SHIFT_4BIT);
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| }
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| 
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| /*
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|  * LDOs 2, 4-19, 22-35
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|  */
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| static const struct regulator_ops max77802_ldo_ops_logic1 = {
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| 	.list_voltage		= regulator_list_voltage_linear,
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| 	.map_voltage		= regulator_map_voltage_linear,
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| 	.is_enabled		= regulator_is_enabled_regmap,
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| 	.enable			= max77802_enable,
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| 	.disable		= regulator_disable_regmap,
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| 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
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| 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
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| 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
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| 	.set_suspend_disable	= max77802_set_suspend_disable,
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| 	.set_suspend_mode	= max77802_set_suspend_mode,
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| };
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| 
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| /*
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|  * LDOs 1, 20, 21, 3
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|  */
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| static const struct regulator_ops max77802_ldo_ops_logic2 = {
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| 	.list_voltage		= regulator_list_voltage_linear,
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| 	.map_voltage		= regulator_map_voltage_linear,
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| 	.is_enabled		= regulator_is_enabled_regmap,
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| 	.enable			= max77802_enable,
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| 	.disable		= regulator_disable_regmap,
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| 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
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| 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
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| 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
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| 	.set_mode		= max77802_set_mode,
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| 	.get_mode		= max77802_get_mode,
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| 	.set_suspend_mode	= max77802_set_suspend_mode,
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| };
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| 
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| /* BUCKS 1, 6 */
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| static const struct regulator_ops max77802_buck_16_dvs_ops = {
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| 	.list_voltage		= regulator_list_voltage_linear,
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| 	.map_voltage		= regulator_map_voltage_linear,
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| 	.is_enabled		= regulator_is_enabled_regmap,
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| 	.enable			= max77802_enable,
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| 	.disable		= regulator_disable_regmap,
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| 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
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| 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
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| 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
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| 	.set_ramp_delay		= max77802_set_ramp_delay_4bit,
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| 	.set_suspend_disable	= max77802_set_suspend_disable,
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| };
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| 
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| /* BUCKs 2-4 */
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| static const struct regulator_ops max77802_buck_234_ops = {
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| 	.list_voltage		= regulator_list_voltage_linear,
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| 	.map_voltage		= regulator_map_voltage_linear,
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| 	.is_enabled		= regulator_is_enabled_regmap,
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| 	.enable			= max77802_enable,
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| 	.disable		= regulator_disable_regmap,
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| 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
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| 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
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| 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
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| 	.set_ramp_delay		= max77802_set_ramp_delay_2bit,
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| 	.set_suspend_disable	= max77802_set_suspend_disable,
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| 	.set_suspend_mode	= max77802_set_suspend_mode,
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| };
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| 
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| /* BUCKs 5, 7-10 */
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| static const struct regulator_ops max77802_buck_dvs_ops = {
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| 	.list_voltage		= regulator_list_voltage_linear,
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| 	.map_voltage		= regulator_map_voltage_linear,
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| 	.is_enabled		= regulator_is_enabled_regmap,
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| 	.enable			= max77802_enable,
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| 	.disable		= regulator_disable_regmap,
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| 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
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| 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
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| 	.set_voltage_time_sel	= regulator_set_voltage_time_sel,
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| 	.set_ramp_delay		= max77802_set_ramp_delay_2bit,
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| 	.set_suspend_disable	= max77802_set_suspend_disable,
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| };
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| 
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| /* LDOs 3-7, 9-14, 18-26, 28, 29, 32-34 */
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| #define regulator_77802_desc_p_ldo(num, supply, log)	{		\
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| 	.name		= "LDO"#num,					\
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| 	.of_match	= of_match_ptr("LDO"#num),			\
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| 	.regulators_node	= of_match_ptr("regulators"),		\
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| 	.id		= MAX77802_LDO##num,				\
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| 	.supply_name	= "inl"#supply,					\
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| 	.ops		= &max77802_ldo_ops_logic##log,			\
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| 	.type		= REGULATOR_VOLTAGE,				\
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| 	.owner		= THIS_MODULE,					\
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| 	.min_uV		= 800000,					\
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| 	.uV_step	= 50000,					\
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| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
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| 	.n_voltages	= 1 << 6,					\
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| 	.vsel_reg	= MAX77802_REG_LDO1CTRL1 + num - 1,		\
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| 	.vsel_mask	= MAX77802_VSEL_MASK,				\
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| 	.enable_reg	= MAX77802_REG_LDO1CTRL1 + num - 1,		\
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| 	.enable_mask	= MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \
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| 	.of_map_mode	= max77802_map_mode,				\
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| }
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| 
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| /* LDOs 1, 2, 8, 15, 17, 27, 30, 35 */
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| #define regulator_77802_desc_n_ldo(num, supply, log)   {		\
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| 	.name		= "LDO"#num,					\
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| 	.of_match	= of_match_ptr("LDO"#num),			\
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| 	.regulators_node	= of_match_ptr("regulators"),		\
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| 	.id		= MAX77802_LDO##num,				\
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| 	.supply_name	= "inl"#supply,					\
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| 	.ops		= &max77802_ldo_ops_logic##log,			\
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| 	.type		= REGULATOR_VOLTAGE,				\
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| 	.owner		= THIS_MODULE,					\
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| 	.min_uV		= 800000,					\
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| 	.uV_step	= 25000,					\
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| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
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| 	.n_voltages	= 1 << 6,					\
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| 	.vsel_reg	= MAX77802_REG_LDO1CTRL1 + num - 1,		\
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| 	.vsel_mask	= MAX77802_VSEL_MASK,				\
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| 	.enable_reg	= MAX77802_REG_LDO1CTRL1 + num - 1,		\
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| 	.enable_mask	= MAX77802_OPMODE_MASK << MAX77802_OPMODE_SHIFT_LDO, \
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| 	.of_map_mode	= max77802_map_mode,				\
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| }
 | |
| 
 | |
| /* BUCKs 1, 6 */
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| #define regulator_77802_desc_16_buck(num)	{		\
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| 	.name		= "BUCK"#num,					\
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| 	.of_match	= of_match_ptr("BUCK"#num),			\
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| 	.regulators_node	= of_match_ptr("regulators"),		\
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| 	.id		= MAX77802_BUCK##num,				\
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| 	.supply_name	= "inb"#num,					\
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| 	.ops		= &max77802_buck_16_dvs_ops,			\
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| 	.type		= REGULATOR_VOLTAGE,				\
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| 	.owner		= THIS_MODULE,					\
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| 	.min_uV		= 612500,					\
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| 	.uV_step	= 6250,						\
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| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
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| 	.n_voltages	= 1 << 8,					\
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| 	.vsel_reg	= MAX77802_REG_BUCK ## num ## DVS1,		\
 | |
| 	.vsel_mask	= MAX77802_DVS_VSEL_MASK,			\
 | |
| 	.enable_reg	= MAX77802_REG_BUCK ## num ## CTRL,		\
 | |
| 	.enable_mask	= MAX77802_OPMODE_MASK,				\
 | |
| 	.of_map_mode	= max77802_map_mode,				\
 | |
| }
 | |
| 
 | |
| /* BUCKS 2-4 */
 | |
| #define regulator_77802_desc_234_buck(num)	{		\
 | |
| 	.name		= "BUCK"#num,					\
 | |
| 	.of_match	= of_match_ptr("BUCK"#num),			\
 | |
| 	.regulators_node	= of_match_ptr("regulators"),		\
 | |
| 	.id		= MAX77802_BUCK##num,				\
 | |
| 	.supply_name	= "inb"#num,					\
 | |
| 	.ops		= &max77802_buck_234_ops,			\
 | |
| 	.type		= REGULATOR_VOLTAGE,				\
 | |
| 	.owner		= THIS_MODULE,					\
 | |
| 	.min_uV		= 600000,					\
 | |
| 	.uV_step	= 6250,						\
 | |
| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
 | |
| 	.n_voltages	= 0x91,						\
 | |
| 	.vsel_reg	= MAX77802_REG_BUCK ## num ## DVS1,		\
 | |
| 	.vsel_mask	= MAX77802_DVS_VSEL_MASK,			\
 | |
| 	.enable_reg	= MAX77802_REG_BUCK ## num ## CTRL1,		\
 | |
| 	.enable_mask	= MAX77802_OPMODE_MASK <<			\
 | |
| 				MAX77802_OPMODE_BUCK234_SHIFT,		\
 | |
| 	.of_map_mode	= max77802_map_mode,				\
 | |
| }
 | |
| 
 | |
| /* BUCK 5 */
 | |
| #define regulator_77802_desc_buck5(num)		{		\
 | |
| 	.name		= "BUCK"#num,					\
 | |
| 	.of_match	= of_match_ptr("BUCK"#num),			\
 | |
| 	.regulators_node	= of_match_ptr("regulators"),		\
 | |
| 	.id		= MAX77802_BUCK##num,				\
 | |
| 	.supply_name	= "inb"#num,					\
 | |
| 	.ops		= &max77802_buck_dvs_ops,			\
 | |
| 	.type		= REGULATOR_VOLTAGE,				\
 | |
| 	.owner		= THIS_MODULE,					\
 | |
| 	.min_uV		= 750000,					\
 | |
| 	.uV_step	= 50000,					\
 | |
| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
 | |
| 	.n_voltages	= 1 << 6,					\
 | |
| 	.vsel_reg	= MAX77802_REG_BUCK5OUT,			\
 | |
| 	.vsel_mask	= MAX77802_VSEL_MASK,				\
 | |
| 	.enable_reg	= MAX77802_REG_BUCK5CTRL,			\
 | |
| 	.enable_mask	= MAX77802_OPMODE_MASK,				\
 | |
| 	.of_map_mode	= max77802_map_mode,				\
 | |
| }
 | |
| 
 | |
| /* BUCKs 7-10 */
 | |
| #define regulator_77802_desc_buck7_10(num)	{		\
 | |
| 	.name		= "BUCK"#num,					\
 | |
| 	.of_match	= of_match_ptr("BUCK"#num),			\
 | |
| 	.regulators_node	= of_match_ptr("regulators"),		\
 | |
| 	.id		= MAX77802_BUCK##num,				\
 | |
| 	.supply_name	= "inb"#num,					\
 | |
| 	.ops		= &max77802_buck_dvs_ops,			\
 | |
| 	.type		= REGULATOR_VOLTAGE,				\
 | |
| 	.owner		= THIS_MODULE,					\
 | |
| 	.min_uV		= 750000,					\
 | |
| 	.uV_step	= 50000,					\
 | |
| 	.ramp_delay	= MAX77802_RAMP_DELAY,				\
 | |
| 	.n_voltages	= 1 << 6,					\
 | |
| 	.vsel_reg	= MAX77802_REG_BUCK7OUT + (num - 7) * 3,	\
 | |
| 	.vsel_mask	= MAX77802_VSEL_MASK,				\
 | |
| 	.enable_reg	= MAX77802_REG_BUCK7CTRL + (num - 7) * 3,	\
 | |
| 	.enable_mask	= MAX77802_OPMODE_MASK,				\
 | |
| 	.of_map_mode	= max77802_map_mode,				\
 | |
| }
 | |
| 
 | |
| static const struct regulator_desc regulators[] = {
 | |
| 	regulator_77802_desc_16_buck(1),
 | |
| 	regulator_77802_desc_234_buck(2),
 | |
| 	regulator_77802_desc_234_buck(3),
 | |
| 	regulator_77802_desc_234_buck(4),
 | |
| 	regulator_77802_desc_buck5(5),
 | |
| 	regulator_77802_desc_16_buck(6),
 | |
| 	regulator_77802_desc_buck7_10(7),
 | |
| 	regulator_77802_desc_buck7_10(8),
 | |
| 	regulator_77802_desc_buck7_10(9),
 | |
| 	regulator_77802_desc_buck7_10(10),
 | |
| 	regulator_77802_desc_n_ldo(1, 10, 2),
 | |
| 	regulator_77802_desc_n_ldo(2, 10, 1),
 | |
| 	regulator_77802_desc_p_ldo(3, 3, 2),
 | |
| 	regulator_77802_desc_p_ldo(4, 6, 1),
 | |
| 	regulator_77802_desc_p_ldo(5, 3, 1),
 | |
| 	regulator_77802_desc_p_ldo(6, 3, 1),
 | |
| 	regulator_77802_desc_p_ldo(7, 3, 1),
 | |
| 	regulator_77802_desc_n_ldo(8, 1, 1),
 | |
| 	regulator_77802_desc_p_ldo(9, 5, 1),
 | |
| 	regulator_77802_desc_p_ldo(10, 4, 1),
 | |
| 	regulator_77802_desc_p_ldo(11, 4, 1),
 | |
| 	regulator_77802_desc_p_ldo(12, 9, 1),
 | |
| 	regulator_77802_desc_p_ldo(13, 4, 1),
 | |
| 	regulator_77802_desc_p_ldo(14, 4, 1),
 | |
| 	regulator_77802_desc_n_ldo(15, 1, 1),
 | |
| 	regulator_77802_desc_n_ldo(17, 2, 1),
 | |
| 	regulator_77802_desc_p_ldo(18, 7, 1),
 | |
| 	regulator_77802_desc_p_ldo(19, 5, 1),
 | |
| 	regulator_77802_desc_p_ldo(20, 7, 2),
 | |
| 	regulator_77802_desc_p_ldo(21, 6, 2),
 | |
| 	regulator_77802_desc_p_ldo(23, 9, 1),
 | |
| 	regulator_77802_desc_p_ldo(24, 6, 1),
 | |
| 	regulator_77802_desc_p_ldo(25, 9, 1),
 | |
| 	regulator_77802_desc_p_ldo(26, 9, 1),
 | |
| 	regulator_77802_desc_n_ldo(27, 2, 1),
 | |
| 	regulator_77802_desc_p_ldo(28, 7, 1),
 | |
| 	regulator_77802_desc_p_ldo(29, 7, 1),
 | |
| 	regulator_77802_desc_n_ldo(30, 2, 1),
 | |
| 	regulator_77802_desc_p_ldo(32, 9, 1),
 | |
| 	regulator_77802_desc_p_ldo(33, 6, 1),
 | |
| 	regulator_77802_desc_p_ldo(34, 9, 1),
 | |
| 	regulator_77802_desc_n_ldo(35, 2, 1),
 | |
| };
 | |
| 
 | |
| static int max77802_pmic_probe(struct platform_device *pdev)
 | |
| {
 | |
| 	struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
 | |
| 	struct max77802_regulator_prv *max77802;
 | |
| 	int i, val;
 | |
| 	struct regulator_config config = { };
 | |
| 
 | |
| 	max77802 = devm_kzalloc(&pdev->dev,
 | |
| 				sizeof(struct max77802_regulator_prv),
 | |
| 				GFP_KERNEL);
 | |
| 	if (!max77802)
 | |
| 		return -ENOMEM;
 | |
| 
 | |
| 	config.dev = iodev->dev;
 | |
| 	config.regmap = iodev->regmap;
 | |
| 	config.driver_data = max77802;
 | |
| 	platform_set_drvdata(pdev, max77802);
 | |
| 
 | |
| 	for (i = 0; i < MAX77802_REG_MAX; i++) {
 | |
| 		struct regulator_dev *rdev;
 | |
| 		int id = regulators[i].id;
 | |
| 		int shift = max77802_get_opmode_shift(id);
 | |
| 		int ret;
 | |
| 
 | |
| 		ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val);
 | |
| 		if (ret < 0) {
 | |
| 			dev_warn(&pdev->dev,
 | |
| 				"cannot read current mode for %d\n", i);
 | |
| 			val = MAX77802_OPMODE_NORMAL;
 | |
| 		} else {
 | |
| 			val = val >> shift & MAX77802_OPMODE_MASK;
 | |
| 		}
 | |
| 
 | |
| 		/*
 | |
| 		 * If the regulator is disabled and the system warm rebooted,
 | |
| 		 * the hardware reports OFF as the regulator operating mode.
 | |
| 		 * Default to operating mode NORMAL in that case.
 | |
| 		 */
 | |
| 		if (val == MAX77802_STATUS_OFF)
 | |
| 			max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
 | |
| 		else
 | |
| 			max77802->opmode[id] = val;
 | |
| 
 | |
| 		rdev = devm_regulator_register(&pdev->dev,
 | |
| 					       ®ulators[i], &config);
 | |
| 		if (IS_ERR(rdev)) {
 | |
| 			ret = PTR_ERR(rdev);
 | |
| 			dev_err(&pdev->dev,
 | |
| 				"regulator init failed for %d: %d\n", i, ret);
 | |
| 			return ret;
 | |
| 		}
 | |
| 	}
 | |
| 
 | |
| 	return 0;
 | |
| }
 | |
| 
 | |
| static const struct platform_device_id max77802_pmic_id[] = {
 | |
| 	{"max77802-pmic", 0},
 | |
| 	{ },
 | |
| };
 | |
| MODULE_DEVICE_TABLE(platform, max77802_pmic_id);
 | |
| 
 | |
| static struct platform_driver max77802_pmic_driver = {
 | |
| 	.driver = {
 | |
| 		.name = "max77802-pmic",
 | |
| 	},
 | |
| 	.probe = max77802_pmic_probe,
 | |
| 	.id_table = max77802_pmic_id,
 | |
| };
 | |
| 
 | |
| module_platform_driver(max77802_pmic_driver);
 | |
| 
 | |
| MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver");
 | |
| MODULE_AUTHOR("Simon Glass <sjg@chromium.org>");
 | |
| MODULE_LICENSE("GPL");
 |