forked from luck/tmp_suning_uos_patched
e6b5be2be4
Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
610 lines
19 KiB
C
610 lines
19 KiB
C
/*
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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@smasung.com>
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* Jonghwa Lee <jonghwa3.lee@samsung.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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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/gpio.h>
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#include <linux/slab.h>
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#include <linux/gpio/consumer.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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/* 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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#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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#define MAX77802_VSEL_MASK 0x3F
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#define MAX77802_DVS_VSEL_MASK 0xFF
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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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#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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/* 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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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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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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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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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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if (id >= MAX77802_BUCK2 && id <= MAX77802_BUCK4)
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return MAX77802_OPMODE_BUCK234_SHIFT;
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if (id >= MAX77802_LDO1 && id <= MAX77802_LDO35)
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return MAX77802_OPMODE_SHIFT_LDO;
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return -EINVAL;
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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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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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* 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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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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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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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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return max77802_map_mode(max77802->opmode[id]);
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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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* 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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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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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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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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if (max77802->opmode[id] == MAX77802_OFF_PWRREQ)
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max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
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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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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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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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/* 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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/* 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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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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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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/* 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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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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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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* LDOs 2, 4-19, 22-35
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*/
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static 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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* LDOs 1, 20, 21, 3
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*/
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static 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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/* BUCKS 1, 6 */
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static 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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/* BUCKs 2-4 */
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static 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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/* BUCKs 5, 7-10 */
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static 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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/* 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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/* 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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}
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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, \
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.vsel_mask = MAX77802_DVS_VSEL_MASK, \
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.enable_reg = MAX77802_REG_BUCK ## num ## CTRL, \
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.enable_mask = MAX77802_OPMODE_MASK, \
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.of_map_mode = max77802_map_mode, \
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}
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/* BUCKS 2-4 */
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#define regulator_77802_desc_234_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_234_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 600000, \
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.uV_step = 6250, \
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.ramp_delay = MAX77802_RAMP_DELAY, \
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.n_voltages = 0x91, \
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.vsel_reg = MAX77802_REG_BUCK ## num ## DVS1, \
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.vsel_mask = MAX77802_DVS_VSEL_MASK, \
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.enable_reg = MAX77802_REG_BUCK ## num ## CTRL1, \
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.enable_mask = MAX77802_OPMODE_MASK << \
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MAX77802_OPMODE_BUCK234_SHIFT, \
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.of_map_mode = max77802_map_mode, \
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}
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/* BUCK 5 */
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#define regulator_77802_desc_buck5(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_dvs_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 750000, \
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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_BUCK5OUT, \
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.vsel_mask = MAX77802_VSEL_MASK, \
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.enable_reg = MAX77802_REG_BUCK5CTRL, \
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.enable_mask = MAX77802_OPMODE_MASK, \
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.of_map_mode = max77802_map_mode, \
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}
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/* BUCKs 7-10 */
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#define regulator_77802_desc_buck7_10(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_dvs_ops, \
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.type = REGULATOR_VOLTAGE, \
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.owner = THIS_MODULE, \
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.min_uV = 750000, \
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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_BUCK7OUT + (num - 7) * 3, \
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.vsel_mask = MAX77802_VSEL_MASK, \
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.enable_reg = MAX77802_REG_BUCK7CTRL + (num - 7) * 3, \
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.enable_mask = MAX77802_OPMODE_MASK, \
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.of_map_mode = max77802_map_mode, \
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}
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static const struct regulator_desc regulators[] = {
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regulator_77802_desc_16_buck(1),
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regulator_77802_desc_234_buck(2),
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regulator_77802_desc_234_buck(3),
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regulator_77802_desc_234_buck(4),
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regulator_77802_desc_buck5(5),
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regulator_77802_desc_16_buck(6),
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regulator_77802_desc_buck7_10(7),
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regulator_77802_desc_buck7_10(8),
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regulator_77802_desc_buck7_10(9),
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regulator_77802_desc_buck7_10(10),
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regulator_77802_desc_n_ldo(1, 10, 2),
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regulator_77802_desc_n_ldo(2, 10, 1),
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regulator_77802_desc_p_ldo(3, 3, 2),
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regulator_77802_desc_p_ldo(4, 6, 1),
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regulator_77802_desc_p_ldo(5, 3, 1),
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regulator_77802_desc_p_ldo(6, 3, 1),
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regulator_77802_desc_p_ldo(7, 3, 1),
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regulator_77802_desc_n_ldo(8, 1, 1),
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regulator_77802_desc_p_ldo(9, 5, 1),
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regulator_77802_desc_p_ldo(10, 4, 1),
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regulator_77802_desc_p_ldo(11, 4, 1),
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regulator_77802_desc_p_ldo(12, 9, 1),
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regulator_77802_desc_p_ldo(13, 4, 1),
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regulator_77802_desc_p_ldo(14, 4, 1),
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regulator_77802_desc_n_ldo(15, 1, 1),
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regulator_77802_desc_n_ldo(17, 2, 1),
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regulator_77802_desc_p_ldo(18, 7, 1),
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regulator_77802_desc_p_ldo(19, 5, 1),
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regulator_77802_desc_p_ldo(20, 7, 2),
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regulator_77802_desc_p_ldo(21, 6, 2),
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regulator_77802_desc_p_ldo(23, 9, 1),
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regulator_77802_desc_p_ldo(24, 6, 1),
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regulator_77802_desc_p_ldo(25, 9, 1),
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regulator_77802_desc_p_ldo(26, 9, 1),
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regulator_77802_desc_n_ldo(27, 2, 1),
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regulator_77802_desc_p_ldo(28, 7, 1),
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regulator_77802_desc_p_ldo(29, 7, 1),
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regulator_77802_desc_n_ldo(30, 2, 1),
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regulator_77802_desc_p_ldo(32, 9, 1),
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regulator_77802_desc_p_ldo(33, 6, 1),
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regulator_77802_desc_p_ldo(34, 9, 1),
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regulator_77802_desc_n_ldo(35, 2, 1),
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};
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static int max77802_pmic_probe(struct platform_device *pdev)
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{
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struct max77686_dev *iodev = dev_get_drvdata(pdev->dev.parent);
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struct max77802_regulator_prv *max77802;
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int i, val;
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struct regulator_config config = { };
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max77802 = devm_kzalloc(&pdev->dev,
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sizeof(struct max77802_regulator_prv),
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GFP_KERNEL);
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if (!max77802)
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return -ENOMEM;
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config.dev = iodev->dev;
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config.regmap = iodev->regmap;
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config.driver_data = max77802;
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platform_set_drvdata(pdev, max77802);
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for (i = 0; i < MAX77802_REG_MAX; i++) {
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struct regulator_dev *rdev;
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int id = regulators[i].id;
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int shift = max77802_get_opmode_shift(id);
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int ret;
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ret = regmap_read(iodev->regmap, regulators[i].enable_reg, &val);
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if (ret < 0) {
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dev_warn(&pdev->dev,
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"cannot read current mode for %d\n", i);
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val = MAX77802_OPMODE_NORMAL;
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} else {
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val = val >> shift & MAX77802_OPMODE_MASK;
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}
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/*
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* If the regulator is disabled and the system warm rebooted,
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* the hardware reports OFF as the regulator operating mode.
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* Default to operating mode NORMAL in that case.
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*/
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if (val == MAX77802_STATUS_OFF)
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max77802->opmode[id] = MAX77802_OPMODE_NORMAL;
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else
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max77802->opmode[id] = val;
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rdev = devm_regulator_register(&pdev->dev,
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®ulators[i], &config);
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if (IS_ERR(rdev)) {
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ret = PTR_ERR(rdev);
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dev_err(&pdev->dev,
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"regulator init failed for %d: %d\n", i, ret);
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return ret;
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}
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}
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return 0;
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}
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static const struct platform_device_id max77802_pmic_id[] = {
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{"max77802-pmic", 0},
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{ },
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};
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MODULE_DEVICE_TABLE(platform, max77802_pmic_id);
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static struct platform_driver max77802_pmic_driver = {
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.driver = {
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.name = "max77802-pmic",
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},
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.probe = max77802_pmic_probe,
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.id_table = max77802_pmic_id,
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};
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module_platform_driver(max77802_pmic_driver);
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MODULE_DESCRIPTION("MAXIM 77802 Regulator Driver");
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MODULE_AUTHOR("Simon Glass <sjg@chromium.org>");
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MODULE_LICENSE("GPL");
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