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365 lines
10 KiB
365 lines
10 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
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/* |
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* Broadcom BCM590xx regulator driver |
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* |
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* Copyright 2014 Linaro Limited |
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* Author: Matt Porter <[email protected]> |
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*/ |
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#include <linux/err.h> |
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#include <linux/init.h> |
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#include <linux/kernel.h> |
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#include <linux/mfd/bcm590xx.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/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/slab.h> |
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/* I2C slave 0 registers */ |
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#define BCM590XX_RFLDOPMCTRL1 0x60 |
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#define BCM590XX_IOSR1PMCTRL1 0x7a |
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#define BCM590XX_IOSR2PMCTRL1 0x7c |
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#define BCM590XX_CSRPMCTRL1 0x7e |
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#define BCM590XX_SDSR1PMCTRL1 0x82 |
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#define BCM590XX_SDSR2PMCTRL1 0x86 |
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#define BCM590XX_MSRPMCTRL1 0x8a |
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#define BCM590XX_VSRPMCTRL1 0x8e |
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#define BCM590XX_RFLDOCTRL 0x96 |
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#define BCM590XX_CSRVOUT1 0xc0 |
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/* I2C slave 1 registers */ |
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#define BCM590XX_GPLDO5PMCTRL1 0x16 |
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#define BCM590XX_GPLDO6PMCTRL1 0x18 |
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#define BCM590XX_GPLDO1CTRL 0x1a |
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#define BCM590XX_GPLDO2CTRL 0x1b |
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#define BCM590XX_GPLDO3CTRL 0x1c |
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#define BCM590XX_GPLDO4CTRL 0x1d |
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#define BCM590XX_GPLDO5CTRL 0x1e |
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#define BCM590XX_GPLDO6CTRL 0x1f |
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#define BCM590XX_OTG_CTRL 0x40 |
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#define BCM590XX_GPLDO1PMCTRL1 0x57 |
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#define BCM590XX_GPLDO2PMCTRL1 0x59 |
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#define BCM590XX_GPLDO3PMCTRL1 0x5b |
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#define BCM590XX_GPLDO4PMCTRL1 0x5d |
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#define BCM590XX_REG_ENABLE BIT(7) |
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#define BCM590XX_VBUS_ENABLE BIT(2) |
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#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3) |
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#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0) |
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/* |
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* RFLDO to VSR regulators are |
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* accessed via I2C slave 0 |
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*/ |
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/* LDO regulator IDs */ |
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#define BCM590XX_REG_RFLDO 0 |
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#define BCM590XX_REG_CAMLDO1 1 |
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#define BCM590XX_REG_CAMLDO2 2 |
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#define BCM590XX_REG_SIMLDO1 3 |
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#define BCM590XX_REG_SIMLDO2 4 |
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#define BCM590XX_REG_SDLDO 5 |
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#define BCM590XX_REG_SDXLDO 6 |
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#define BCM590XX_REG_MMCLDO1 7 |
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#define BCM590XX_REG_MMCLDO2 8 |
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#define BCM590XX_REG_AUDLDO 9 |
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#define BCM590XX_REG_MICLDO 10 |
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#define BCM590XX_REG_USBLDO 11 |
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#define BCM590XX_REG_VIBLDO 12 |
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/* DCDC regulator IDs */ |
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#define BCM590XX_REG_CSR 13 |
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#define BCM590XX_REG_IOSR1 14 |
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#define BCM590XX_REG_IOSR2 15 |
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#define BCM590XX_REG_MSR 16 |
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#define BCM590XX_REG_SDSR1 17 |
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#define BCM590XX_REG_SDSR2 18 |
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#define BCM590XX_REG_VSR 19 |
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/* |
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* GPLDO1 to VBUS regulators are |
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* accessed via I2C slave 1 |
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*/ |
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#define BCM590XX_REG_GPLDO1 20 |
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#define BCM590XX_REG_GPLDO2 21 |
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#define BCM590XX_REG_GPLDO3 22 |
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#define BCM590XX_REG_GPLDO4 23 |
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#define BCM590XX_REG_GPLDO5 24 |
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#define BCM590XX_REG_GPLDO6 25 |
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#define BCM590XX_REG_VBUS 26 |
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#define BCM590XX_NUM_REGS 27 |
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#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR) |
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#define BCM590XX_REG_IS_GPLDO(n) \ |
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((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS)) |
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#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS) |
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/* LDO group A: supported voltages in microvolts */ |
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static const unsigned int ldo_a_table[] = { |
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1200000, 1800000, 2500000, 2700000, 2800000, |
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2900000, 3000000, 3300000, |
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}; |
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/* LDO group C: supported voltages in microvolts */ |
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static const unsigned int ldo_c_table[] = { |
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3100000, 1800000, 2500000, 2700000, 2800000, |
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2900000, 3000000, 3300000, |
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}; |
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static const unsigned int ldo_vbus[] = { |
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5000000, |
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}; |
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/* DCDC group CSR: supported voltages in microvolts */ |
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static const struct linear_range dcdc_csr_ranges[] = { |
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REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), |
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REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000), |
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REGULATOR_LINEAR_RANGE(900000, 56, 63, 0), |
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}; |
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/* DCDC group IOSR1: supported voltages in microvolts */ |
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static const struct linear_range dcdc_iosr1_ranges[] = { |
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REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000), |
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REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0), |
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REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0), |
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REGULATOR_LINEAR_RANGE(900000, 54, 63, 0), |
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}; |
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/* DCDC group SDSR1: supported voltages in microvolts */ |
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static const struct linear_range dcdc_sdsr1_ranges[] = { |
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REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000), |
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REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0), |
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REGULATOR_LINEAR_RANGE(900000, 52, 63, 0), |
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}; |
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struct bcm590xx_info { |
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const char *name; |
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const char *vin_name; |
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u8 n_voltages; |
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const unsigned int *volt_table; |
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u8 n_linear_ranges; |
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const struct linear_range *linear_ranges; |
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}; |
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#define BCM590XX_REG_TABLE(_name, _table) \ |
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{ \ |
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.name = #_name, \ |
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.n_voltages = ARRAY_SIZE(_table), \ |
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.volt_table = _table, \ |
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} |
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#define BCM590XX_REG_RANGES(_name, _ranges) \ |
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{ \ |
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.name = #_name, \ |
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.n_voltages = 64, \ |
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.n_linear_ranges = ARRAY_SIZE(_ranges), \ |
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.linear_ranges = _ranges, \ |
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} |
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static struct bcm590xx_info bcm590xx_regs[] = { |
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BCM590XX_REG_TABLE(rfldo, ldo_a_table), |
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BCM590XX_REG_TABLE(camldo1, ldo_c_table), |
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BCM590XX_REG_TABLE(camldo2, ldo_c_table), |
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BCM590XX_REG_TABLE(simldo1, ldo_a_table), |
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BCM590XX_REG_TABLE(simldo2, ldo_a_table), |
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BCM590XX_REG_TABLE(sdldo, ldo_c_table), |
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BCM590XX_REG_TABLE(sdxldo, ldo_a_table), |
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BCM590XX_REG_TABLE(mmcldo1, ldo_a_table), |
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BCM590XX_REG_TABLE(mmcldo2, ldo_a_table), |
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BCM590XX_REG_TABLE(audldo, ldo_a_table), |
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BCM590XX_REG_TABLE(micldo, ldo_a_table), |
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BCM590XX_REG_TABLE(usbldo, ldo_a_table), |
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BCM590XX_REG_TABLE(vibldo, ldo_c_table), |
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BCM590XX_REG_RANGES(csr, dcdc_csr_ranges), |
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BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges), |
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BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges), |
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BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges), |
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BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges), |
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BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges), |
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BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges), |
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BCM590XX_REG_TABLE(gpldo1, ldo_a_table), |
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BCM590XX_REG_TABLE(gpldo2, ldo_a_table), |
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BCM590XX_REG_TABLE(gpldo3, ldo_a_table), |
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BCM590XX_REG_TABLE(gpldo4, ldo_a_table), |
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BCM590XX_REG_TABLE(gpldo5, ldo_a_table), |
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BCM590XX_REG_TABLE(gpldo6, ldo_a_table), |
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BCM590XX_REG_TABLE(vbus, ldo_vbus), |
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}; |
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struct bcm590xx_reg { |
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struct regulator_desc *desc; |
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struct bcm590xx *mfd; |
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}; |
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static int bcm590xx_get_vsel_register(int id) |
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{ |
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if (BCM590XX_REG_IS_LDO(id)) |
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return BCM590XX_RFLDOCTRL + id; |
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else if (BCM590XX_REG_IS_GPLDO(id)) |
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return BCM590XX_GPLDO1CTRL + id; |
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else |
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return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3; |
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} |
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static int bcm590xx_get_enable_register(int id) |
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{ |
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int reg = 0; |
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if (BCM590XX_REG_IS_LDO(id)) |
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reg = BCM590XX_RFLDOPMCTRL1 + id * 2; |
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else if (BCM590XX_REG_IS_GPLDO(id)) |
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reg = BCM590XX_GPLDO1PMCTRL1 + id * 2; |
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else |
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switch (id) { |
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case BCM590XX_REG_CSR: |
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reg = BCM590XX_CSRPMCTRL1; |
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break; |
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case BCM590XX_REG_IOSR1: |
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reg = BCM590XX_IOSR1PMCTRL1; |
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break; |
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case BCM590XX_REG_IOSR2: |
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reg = BCM590XX_IOSR2PMCTRL1; |
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break; |
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case BCM590XX_REG_MSR: |
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reg = BCM590XX_MSRPMCTRL1; |
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break; |
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case BCM590XX_REG_SDSR1: |
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reg = BCM590XX_SDSR1PMCTRL1; |
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break; |
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case BCM590XX_REG_SDSR2: |
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reg = BCM590XX_SDSR2PMCTRL1; |
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break; |
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case BCM590XX_REG_VSR: |
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reg = BCM590XX_VSRPMCTRL1; |
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break; |
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case BCM590XX_REG_VBUS: |
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reg = BCM590XX_OTG_CTRL; |
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break; |
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} |
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return reg; |
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} |
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static const struct regulator_ops bcm590xx_ops_ldo = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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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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.list_voltage = regulator_list_voltage_table, |
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.map_voltage = regulator_map_voltage_iterate, |
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}; |
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static const struct regulator_ops bcm590xx_ops_dcdc = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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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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.list_voltage = regulator_list_voltage_linear_range, |
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.map_voltage = regulator_map_voltage_linear_range, |
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}; |
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static const struct regulator_ops bcm590xx_ops_vbus = { |
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.is_enabled = regulator_is_enabled_regmap, |
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.enable = regulator_enable_regmap, |
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.disable = regulator_disable_regmap, |
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}; |
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static int bcm590xx_probe(struct platform_device *pdev) |
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{ |
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struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent); |
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struct bcm590xx_reg *pmu; |
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struct regulator_config config = { }; |
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struct bcm590xx_info *info; |
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struct regulator_dev *rdev; |
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int i; |
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pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL); |
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if (!pmu) |
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return -ENOMEM; |
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pmu->mfd = bcm590xx; |
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platform_set_drvdata(pdev, pmu); |
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pmu->desc = devm_kcalloc(&pdev->dev, |
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BCM590XX_NUM_REGS, |
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sizeof(struct regulator_desc), |
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GFP_KERNEL); |
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if (!pmu->desc) |
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return -ENOMEM; |
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info = bcm590xx_regs; |
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for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) { |
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/* Register the regulators */ |
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pmu->desc[i].name = info->name; |
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pmu->desc[i].of_match = of_match_ptr(info->name); |
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pmu->desc[i].regulators_node = of_match_ptr("regulators"); |
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pmu->desc[i].supply_name = info->vin_name; |
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pmu->desc[i].id = i; |
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pmu->desc[i].volt_table = info->volt_table; |
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pmu->desc[i].n_voltages = info->n_voltages; |
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pmu->desc[i].linear_ranges = info->linear_ranges; |
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pmu->desc[i].n_linear_ranges = info->n_linear_ranges; |
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if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) { |
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pmu->desc[i].ops = &bcm590xx_ops_ldo; |
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pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK; |
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} else if (BCM590XX_REG_IS_VBUS(i)) |
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pmu->desc[i].ops = &bcm590xx_ops_vbus; |
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else { |
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pmu->desc[i].ops = &bcm590xx_ops_dcdc; |
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pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK; |
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} |
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if (BCM590XX_REG_IS_VBUS(i)) |
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pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE; |
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else { |
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pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i); |
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pmu->desc[i].enable_is_inverted = true; |
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pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE; |
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} |
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pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i); |
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pmu->desc[i].type = REGULATOR_VOLTAGE; |
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pmu->desc[i].owner = THIS_MODULE; |
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config.dev = bcm590xx->dev; |
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config.driver_data = pmu; |
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if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i)) |
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config.regmap = bcm590xx->regmap_sec; |
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else |
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config.regmap = bcm590xx->regmap_pri; |
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rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i], |
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&config); |
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if (IS_ERR(rdev)) { |
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dev_err(bcm590xx->dev, |
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"failed to register %s regulator\n", |
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pdev->name); |
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return PTR_ERR(rdev); |
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} |
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} |
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return 0; |
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} |
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static struct platform_driver bcm590xx_regulator_driver = { |
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.driver = { |
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.name = "bcm590xx-vregs", |
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}, |
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.probe = bcm590xx_probe, |
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}; |
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module_platform_driver(bcm590xx_regulator_driver); |
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MODULE_AUTHOR("Matt Porter <[email protected]>"); |
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MODULE_DESCRIPTION("BCM590xx voltage regulator driver"); |
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MODULE_LICENSE("GPL v2"); |
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MODULE_ALIAS("platform:bcm590xx-vregs");
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