forked from Minki/linux
f56f2b953b
fixes coccicheck warning: drivers/regulator/mt6360-regulator.c:384:3-10: line 384 is redundant because platform_get_irq() already prints an error in fact it is not platform_get_irq but platform_get_irq_byname print error Signed-off-by: Jian Dong <dongjian@yulong.com> Link: https://lore.kernel.org/r/1616555474-158789-1-git-send-email-dj0227@163.com Signed-off-by: Mark Brown <broonie@kernel.org>
458 lines
14 KiB
C
458 lines
14 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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//
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// Copyright (C) 2020 MediaTek Inc.
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//
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// Author: Gene Chen <gene_chen@richtek.com>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/of.h>
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#include <linux/platform_device.h>
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#include <linux/regmap.h>
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#include <linux/regulator/driver.h>
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#include <linux/regulator/machine.h>
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#include <dt-bindings/regulator/mediatek,mt6360-regulator.h>
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enum {
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MT6360_REGULATOR_BUCK1 = 0,
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MT6360_REGULATOR_BUCK2,
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MT6360_REGULATOR_LDO6,
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MT6360_REGULATOR_LDO7,
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MT6360_REGULATOR_LDO1,
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MT6360_REGULATOR_LDO2,
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MT6360_REGULATOR_LDO3,
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MT6360_REGULATOR_LDO5,
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MT6360_REGULATOR_MAX,
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};
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struct mt6360_irq_mapping {
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const char *name;
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irq_handler_t handler;
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};
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struct mt6360_regulator_desc {
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const struct regulator_desc desc;
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unsigned int mode_reg;
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unsigned int mode_mask;
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unsigned int state_reg;
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unsigned int state_mask;
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const struct mt6360_irq_mapping *irq_tables;
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int irq_table_size;
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};
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struct mt6360_regulator_data {
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struct device *dev;
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struct regmap *regmap;
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};
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static irqreturn_t mt6360_pgb_event_handler(int irq, void *data)
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{
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struct regulator_dev *rdev = data;
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regulator_notifier_call_chain(rdev, REGULATOR_EVENT_FAIL, NULL);
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return IRQ_HANDLED;
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}
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static irqreturn_t mt6360_oc_event_handler(int irq, void *data)
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{
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struct regulator_dev *rdev = data;
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regulator_notifier_call_chain(rdev, REGULATOR_EVENT_OVER_CURRENT, NULL);
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return IRQ_HANDLED;
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}
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static irqreturn_t mt6360_ov_event_handler(int irq, void *data)
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{
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struct regulator_dev *rdev = data;
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regulator_notifier_call_chain(rdev, REGULATOR_EVENT_REGULATION_OUT, NULL);
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return IRQ_HANDLED;
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}
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static irqreturn_t mt6360_uv_event_handler(int irq, void *data)
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{
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struct regulator_dev *rdev = data;
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regulator_notifier_call_chain(rdev, REGULATOR_EVENT_UNDER_VOLTAGE, NULL);
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return IRQ_HANDLED;
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}
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static const struct mt6360_irq_mapping buck1_irq_tbls[] = {
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{ "buck1_pgb_evt", mt6360_pgb_event_handler },
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{ "buck1_oc_evt", mt6360_oc_event_handler },
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{ "buck1_ov_evt", mt6360_ov_event_handler },
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{ "buck1_uv_evt", mt6360_uv_event_handler },
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};
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static const struct mt6360_irq_mapping buck2_irq_tbls[] = {
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{ "buck2_pgb_evt", mt6360_pgb_event_handler },
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{ "buck2_oc_evt", mt6360_oc_event_handler },
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{ "buck2_ov_evt", mt6360_ov_event_handler },
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{ "buck2_uv_evt", mt6360_uv_event_handler },
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};
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static const struct mt6360_irq_mapping ldo6_irq_tbls[] = {
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{ "ldo6_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo6_oc_evt", mt6360_oc_event_handler },
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};
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static const struct mt6360_irq_mapping ldo7_irq_tbls[] = {
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{ "ldo7_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo7_oc_evt", mt6360_oc_event_handler },
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};
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static const struct mt6360_irq_mapping ldo1_irq_tbls[] = {
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{ "ldo1_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo1_oc_evt", mt6360_oc_event_handler },
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};
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static const struct mt6360_irq_mapping ldo2_irq_tbls[] = {
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{ "ldo2_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo2_oc_evt", mt6360_oc_event_handler },
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};
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static const struct mt6360_irq_mapping ldo3_irq_tbls[] = {
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{ "ldo3_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo3_oc_evt", mt6360_oc_event_handler },
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};
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static const struct mt6360_irq_mapping ldo5_irq_tbls[] = {
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{ "ldo5_pgb_evt", mt6360_pgb_event_handler },
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{ "ldo5_oc_evt", mt6360_oc_event_handler },
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};
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static const struct linear_range buck_vout_ranges[] = {
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REGULATOR_LINEAR_RANGE(300000, 0x00, 0xc7, 5000),
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REGULATOR_LINEAR_RANGE(1300000, 0xc8, 0xff, 0),
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};
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static const struct linear_range ldo_vout_ranges1[] = {
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REGULATOR_LINEAR_RANGE(500000, 0x00, 0x09, 10000),
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REGULATOR_LINEAR_RANGE(600000, 0x0a, 0x10, 0),
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REGULATOR_LINEAR_RANGE(610000, 0x11, 0x19, 10000),
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REGULATOR_LINEAR_RANGE(700000, 0x1a, 0x20, 0),
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REGULATOR_LINEAR_RANGE(710000, 0x21, 0x29, 10000),
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REGULATOR_LINEAR_RANGE(800000, 0x2a, 0x30, 0),
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REGULATOR_LINEAR_RANGE(810000, 0x31, 0x39, 10000),
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REGULATOR_LINEAR_RANGE(900000, 0x3a, 0x40, 0),
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REGULATOR_LINEAR_RANGE(910000, 0x41, 0x49, 10000),
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REGULATOR_LINEAR_RANGE(1000000, 0x4a, 0x50, 0),
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REGULATOR_LINEAR_RANGE(1010000, 0x51, 0x59, 10000),
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REGULATOR_LINEAR_RANGE(1100000, 0x5a, 0x60, 0),
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REGULATOR_LINEAR_RANGE(1110000, 0x61, 0x69, 10000),
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REGULATOR_LINEAR_RANGE(1200000, 0x6a, 0x70, 0),
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REGULATOR_LINEAR_RANGE(1210000, 0x71, 0x79, 10000),
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REGULATOR_LINEAR_RANGE(1300000, 0x7a, 0x80, 0),
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REGULATOR_LINEAR_RANGE(1310000, 0x81, 0x89, 10000),
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REGULATOR_LINEAR_RANGE(1400000, 0x8a, 0x90, 0),
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REGULATOR_LINEAR_RANGE(1410000, 0x91, 0x99, 10000),
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REGULATOR_LINEAR_RANGE(1500000, 0x9a, 0xa0, 0),
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REGULATOR_LINEAR_RANGE(1510000, 0xa1, 0xa9, 10000),
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REGULATOR_LINEAR_RANGE(1600000, 0xaa, 0xb0, 0),
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REGULATOR_LINEAR_RANGE(1610000, 0xb1, 0xb9, 10000),
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REGULATOR_LINEAR_RANGE(1700000, 0xba, 0xc0, 0),
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REGULATOR_LINEAR_RANGE(1710000, 0xc1, 0xc9, 10000),
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REGULATOR_LINEAR_RANGE(1800000, 0xca, 0xd0, 0),
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REGULATOR_LINEAR_RANGE(1810000, 0xd1, 0xd9, 10000),
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REGULATOR_LINEAR_RANGE(1900000, 0xda, 0xe0, 0),
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REGULATOR_LINEAR_RANGE(1910000, 0xe1, 0xe9, 10000),
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REGULATOR_LINEAR_RANGE(2000000, 0xea, 0xf0, 0),
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REGULATOR_LINEAR_RANGE(2010000, 0xf1, 0xf9, 10000),
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REGULATOR_LINEAR_RANGE(2100000, 0xfa, 0xff, 0),
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};
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static const struct linear_range ldo_vout_ranges2[] = {
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REGULATOR_LINEAR_RANGE(1200000, 0x00, 0x09, 10000),
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REGULATOR_LINEAR_RANGE(1300000, 0x0a, 0x10, 0),
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REGULATOR_LINEAR_RANGE(1310000, 0x11, 0x19, 10000),
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REGULATOR_LINEAR_RANGE(1400000, 0x1a, 0x1f, 0),
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REGULATOR_LINEAR_RANGE(1500000, 0x20, 0x29, 10000),
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REGULATOR_LINEAR_RANGE(1600000, 0x2a, 0x2f, 0),
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REGULATOR_LINEAR_RANGE(1700000, 0x30, 0x39, 10000),
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REGULATOR_LINEAR_RANGE(1800000, 0x3a, 0x40, 0),
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REGULATOR_LINEAR_RANGE(1810000, 0x41, 0x49, 10000),
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REGULATOR_LINEAR_RANGE(1900000, 0x4a, 0x4f, 0),
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REGULATOR_LINEAR_RANGE(2000000, 0x50, 0x59, 10000),
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REGULATOR_LINEAR_RANGE(2100000, 0x5a, 0x60, 0),
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REGULATOR_LINEAR_RANGE(2110000, 0x61, 0x69, 10000),
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REGULATOR_LINEAR_RANGE(2200000, 0x6a, 0x6f, 0),
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REGULATOR_LINEAR_RANGE(2500000, 0x70, 0x79, 10000),
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REGULATOR_LINEAR_RANGE(2600000, 0x7a, 0x7f, 0),
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REGULATOR_LINEAR_RANGE(2700000, 0x80, 0x89, 10000),
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REGULATOR_LINEAR_RANGE(2800000, 0x8a, 0x90, 0),
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REGULATOR_LINEAR_RANGE(2810000, 0x91, 0x99, 10000),
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REGULATOR_LINEAR_RANGE(2900000, 0x9a, 0xa0, 0),
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REGULATOR_LINEAR_RANGE(2910000, 0xa1, 0xa9, 10000),
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REGULATOR_LINEAR_RANGE(3000000, 0xaa, 0xb0, 0),
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REGULATOR_LINEAR_RANGE(3010000, 0xb1, 0xb9, 10000),
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REGULATOR_LINEAR_RANGE(3100000, 0xba, 0xc0, 0),
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REGULATOR_LINEAR_RANGE(3110000, 0xc1, 0xc9, 10000),
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REGULATOR_LINEAR_RANGE(3200000, 0xca, 0xcf, 0),
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REGULATOR_LINEAR_RANGE(3300000, 0xd0, 0xd9, 10000),
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REGULATOR_LINEAR_RANGE(3400000, 0xda, 0xe0, 0),
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REGULATOR_LINEAR_RANGE(3410000, 0xe1, 0xe9, 10000),
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REGULATOR_LINEAR_RANGE(3500000, 0xea, 0xf0, 0),
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REGULATOR_LINEAR_RANGE(3510000, 0xf1, 0xf9, 10000),
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REGULATOR_LINEAR_RANGE(3600000, 0xfa, 0xff, 0),
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};
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static const struct linear_range ldo_vout_ranges3[] = {
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REGULATOR_LINEAR_RANGE(2700000, 0x00, 0x09, 10000),
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REGULATOR_LINEAR_RANGE(2800000, 0x0a, 0x10, 0),
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REGULATOR_LINEAR_RANGE(2810000, 0x11, 0x19, 10000),
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REGULATOR_LINEAR_RANGE(2900000, 0x1a, 0x20, 0),
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REGULATOR_LINEAR_RANGE(2910000, 0x21, 0x29, 10000),
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REGULATOR_LINEAR_RANGE(3000000, 0x2a, 0x30, 0),
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REGULATOR_LINEAR_RANGE(3010000, 0x31, 0x39, 10000),
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REGULATOR_LINEAR_RANGE(3100000, 0x3a, 0x40, 0),
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REGULATOR_LINEAR_RANGE(3110000, 0x41, 0x49, 10000),
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REGULATOR_LINEAR_RANGE(3200000, 0x4a, 0x4f, 0),
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REGULATOR_LINEAR_RANGE(3300000, 0x50, 0x59, 10000),
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REGULATOR_LINEAR_RANGE(3400000, 0x5a, 0x60, 0),
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REGULATOR_LINEAR_RANGE(3410000, 0x61, 0x69, 10000),
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REGULATOR_LINEAR_RANGE(3500000, 0x6a, 0x70, 0),
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REGULATOR_LINEAR_RANGE(3510000, 0x71, 0x79, 10000),
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REGULATOR_LINEAR_RANGE(3600000, 0x7a, 0x7f, 0),
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};
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static int mt6360_regulator_set_mode(struct regulator_dev *rdev,
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unsigned int mode)
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{
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const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
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struct regmap *regmap = rdev_get_regmap(rdev);
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int shift = ffs(rdesc->mode_mask) - 1;
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unsigned int val;
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int ret;
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switch (mode) {
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case REGULATOR_MODE_NORMAL:
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val = MT6360_OPMODE_NORMAL;
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break;
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case REGULATOR_MODE_STANDBY:
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val = MT6360_OPMODE_ULP;
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break;
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case REGULATOR_MODE_IDLE:
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val = MT6360_OPMODE_LP;
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break;
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default:
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return -EINVAL;
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}
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ret = regmap_update_bits(regmap, rdesc->mode_reg, rdesc->mode_mask, val << shift);
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if (ret) {
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dev_err(&rdev->dev, "%s: fail (%d)\n", __func__, ret);
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return ret;
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}
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return 0;
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}
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static unsigned int mt6360_regulator_get_mode(struct regulator_dev *rdev)
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{
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const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
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struct regmap *regmap = rdev_get_regmap(rdev);
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int shift = ffs(rdesc->mode_mask) - 1;
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unsigned int val;
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int ret;
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ret = regmap_read(regmap, rdesc->mode_reg, &val);
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if (ret)
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return ret;
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val &= rdesc->mode_mask;
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val >>= shift;
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switch (val) {
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case MT6360_OPMODE_LP:
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return REGULATOR_MODE_IDLE;
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case MT6360_OPMODE_ULP:
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return REGULATOR_MODE_STANDBY;
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case MT6360_OPMODE_NORMAL:
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return REGULATOR_MODE_NORMAL;
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default:
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return -EINVAL;
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}
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}
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static int mt6360_regulator_get_status(struct regulator_dev *rdev)
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{
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const struct mt6360_regulator_desc *rdesc = (struct mt6360_regulator_desc *)rdev->desc;
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struct regmap *regmap = rdev_get_regmap(rdev);
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unsigned int val;
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int ret;
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ret = regmap_read(regmap, rdesc->state_reg, &val);
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if (ret)
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return ret;
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if (val & rdesc->state_mask)
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return REGULATOR_STATUS_ON;
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return REGULATOR_STATUS_OFF;
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}
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static const struct regulator_ops mt6360_regulator_ops = {
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.list_voltage = regulator_list_voltage_linear_range,
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.enable = regulator_enable_regmap,
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.disable = regulator_disable_regmap,
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.is_enabled = regulator_is_enabled_regmap,
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.set_voltage_sel = regulator_set_voltage_sel_regmap,
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.get_voltage_sel = regulator_get_voltage_sel_regmap,
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.set_mode = mt6360_regulator_set_mode,
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.get_mode = mt6360_regulator_get_mode,
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.get_status = mt6360_regulator_get_status,
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};
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static unsigned int mt6360_regulator_of_map_mode(unsigned int hw_mode)
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{
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switch (hw_mode) {
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case MT6360_OPMODE_NORMAL:
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return REGULATOR_MODE_NORMAL;
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case MT6360_OPMODE_LP:
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return REGULATOR_MODE_IDLE;
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case MT6360_OPMODE_ULP:
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return REGULATOR_MODE_STANDBY;
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default:
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return REGULATOR_MODE_INVALID;
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}
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}
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#define MT6360_REGULATOR_DESC(_name, _sname, ereg, emask, vreg, vmask, \
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mreg, mmask, streg, stmask, vranges, \
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vcnts, offon_delay, irq_tbls) \
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{ \
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.desc = { \
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.name = #_name, \
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.supply_name = #_sname, \
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.id = MT6360_REGULATOR_##_name, \
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.of_match = of_match_ptr(#_name), \
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.regulators_node = of_match_ptr("regulator"), \
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.of_map_mode = mt6360_regulator_of_map_mode, \
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.owner = THIS_MODULE, \
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.ops = &mt6360_regulator_ops, \
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.type = REGULATOR_VOLTAGE, \
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.vsel_reg = vreg, \
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.vsel_mask = vmask, \
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.enable_reg = ereg, \
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.enable_mask = emask, \
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.linear_ranges = vranges, \
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.n_linear_ranges = ARRAY_SIZE(vranges), \
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.n_voltages = vcnts, \
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.off_on_delay = offon_delay, \
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}, \
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.mode_reg = mreg, \
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.mode_mask = mmask, \
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.state_reg = streg, \
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.state_mask = stmask, \
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.irq_tables = irq_tbls, \
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.irq_table_size = ARRAY_SIZE(irq_tbls), \
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}
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static const struct mt6360_regulator_desc mt6360_regulator_descs[] = {
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MT6360_REGULATOR_DESC(BUCK1, BUCK1_VIN, 0x117, 0x40, 0x110, 0xff, 0x117, 0x30, 0x117, 0x04,
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buck_vout_ranges, 256, 0, buck1_irq_tbls),
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MT6360_REGULATOR_DESC(BUCK2, BUCK2_VIN, 0x127, 0x40, 0x120, 0xff, 0x127, 0x30, 0x127, 0x04,
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buck_vout_ranges, 256, 0, buck2_irq_tbls),
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MT6360_REGULATOR_DESC(LDO6, LDO_VIN3, 0x137, 0x40, 0x13B, 0xff, 0x137, 0x30, 0x137, 0x04,
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ldo_vout_ranges1, 256, 0, ldo6_irq_tbls),
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MT6360_REGULATOR_DESC(LDO7, LDO_VIN3, 0x131, 0x40, 0x135, 0xff, 0x131, 0x30, 0x131, 0x04,
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ldo_vout_ranges1, 256, 0, ldo7_irq_tbls),
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MT6360_REGULATOR_DESC(LDO1, LDO_VIN1, 0x217, 0x40, 0x21B, 0xff, 0x217, 0x30, 0x217, 0x04,
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ldo_vout_ranges2, 256, 0, ldo1_irq_tbls),
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MT6360_REGULATOR_DESC(LDO2, LDO_VIN1, 0x211, 0x40, 0x215, 0xff, 0x211, 0x30, 0x211, 0x04,
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ldo_vout_ranges2, 256, 0, ldo2_irq_tbls),
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MT6360_REGULATOR_DESC(LDO3, LDO_VIN1, 0x205, 0x40, 0x209, 0xff, 0x205, 0x30, 0x205, 0x04,
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ldo_vout_ranges2, 256, 100, ldo3_irq_tbls),
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MT6360_REGULATOR_DESC(LDO5, LDO_VIN2, 0x20B, 0x40, 0x20F, 0x7f, 0x20B, 0x30, 0x20B, 0x04,
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ldo_vout_ranges3, 128, 100, ldo5_irq_tbls),
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};
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static int mt6360_regulator_irq_register(struct platform_device *pdev,
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struct regulator_dev *rdev,
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const struct mt6360_irq_mapping *tbls,
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|
int tbl_size)
|
|
{
|
|
int i, irq, ret;
|
|
|
|
for (i = 0; i < tbl_size; i++) {
|
|
const struct mt6360_irq_mapping *irq_desc = tbls + i;
|
|
|
|
irq = platform_get_irq_byname(pdev, irq_desc->name);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, irq_desc->handler, 0,
|
|
irq_desc->name, rdev);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Fail to request %s irq\n", irq_desc->name);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int mt6360_regulator_probe(struct platform_device *pdev)
|
|
{
|
|
struct mt6360_regulator_data *mrd;
|
|
struct regulator_config config = {};
|
|
int i, ret;
|
|
|
|
mrd = devm_kzalloc(&pdev->dev, sizeof(*mrd), GFP_KERNEL);
|
|
if (!mrd)
|
|
return -ENOMEM;
|
|
|
|
mrd->dev = &pdev->dev;
|
|
|
|
mrd->regmap = dev_get_regmap(pdev->dev.parent, NULL);
|
|
if (!mrd->regmap) {
|
|
dev_err(&pdev->dev, "Failed to get parent regmap\n");
|
|
return -ENODEV;
|
|
}
|
|
|
|
config.dev = pdev->dev.parent;
|
|
config.driver_data = mrd;
|
|
config.regmap = mrd->regmap;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(mt6360_regulator_descs); i++) {
|
|
const struct mt6360_regulator_desc *rdesc = mt6360_regulator_descs + i;
|
|
struct regulator_dev *rdev;
|
|
|
|
rdev = devm_regulator_register(&pdev->dev, &rdesc->desc, &config);
|
|
if (IS_ERR(rdev)) {
|
|
dev_err(&pdev->dev, "Failed to register %d regulator\n", i);
|
|
return PTR_ERR(rdev);
|
|
}
|
|
|
|
ret = mt6360_regulator_irq_register(pdev, rdev, rdesc->irq_tables,
|
|
rdesc->irq_table_size);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "Failed to register %d regulator irqs\n", i);
|
|
return ret;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct platform_device_id mt6360_regulator_id_table[] = {
|
|
{ "mt6360-regulator", 0 },
|
|
{},
|
|
};
|
|
MODULE_DEVICE_TABLE(platform, mt6360_regulator_id_table);
|
|
|
|
static struct platform_driver mt6360_regulator_driver = {
|
|
.driver = {
|
|
.name = "mt6360-regulator",
|
|
},
|
|
.probe = mt6360_regulator_probe,
|
|
.id_table = mt6360_regulator_id_table,
|
|
};
|
|
module_platform_driver(mt6360_regulator_driver);
|
|
|
|
MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
|
|
MODULE_DESCRIPTION("MT6360 Regulator Driver");
|
|
MODULE_LICENSE("GPL v2");
|