| 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
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| 2 | /* NXP PCF50633 GPIO Driver |
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| 3 | * |
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| 4 | * (C) 2006-2008 by Openmoko, Inc. |
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| 5 | * Author: Balaji Rao <balajirrao@openmoko.org> |
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| 6 | * All rights reserved. |
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| 7 | * |
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| 8 | * Broken down from monstrous PCF50633 driver mainly by |
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| 9 | * Harald Welte, Andy Green and Werner Almesberger |
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| 10 | */ |
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| 11 | |
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| 12 | #include <linux/kernel.h> |
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| 13 | #include <linux/module.h> |
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| 14 | |
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| 15 | #include <linux/mfd/pcf50633/core.h> |
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| 16 | #include <linux/mfd/pcf50633/gpio.h> |
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| 17 | #include <linux/mfd/pcf50633/pmic.h> |
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| 18 | |
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| 19 | static const u8 pcf50633_regulator_registers[PCF50633_NUM_REGULATORS] = { |
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| 20 | [PCF50633_REGULATOR_AUTO] = PCF50633_REG_AUTOOUT, |
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| 21 | [PCF50633_REGULATOR_DOWN1] = PCF50633_REG_DOWN1OUT, |
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| 22 | [PCF50633_REGULATOR_DOWN2] = PCF50633_REG_DOWN2OUT, |
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| 23 | [PCF50633_REGULATOR_MEMLDO] = PCF50633_REG_MEMLDOOUT, |
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| 24 | [PCF50633_REGULATOR_LDO1] = PCF50633_REG_LDO1OUT, |
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| 25 | [PCF50633_REGULATOR_LDO2] = PCF50633_REG_LDO2OUT, |
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| 26 | [PCF50633_REGULATOR_LDO3] = PCF50633_REG_LDO3OUT, |
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| 27 | [PCF50633_REGULATOR_LDO4] = PCF50633_REG_LDO4OUT, |
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| 28 | [PCF50633_REGULATOR_LDO5] = PCF50633_REG_LDO5OUT, |
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| 29 | [PCF50633_REGULATOR_LDO6] = PCF50633_REG_LDO6OUT, |
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| 30 | [PCF50633_REGULATOR_HCLDO] = PCF50633_REG_HCLDOOUT, |
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| 31 | }; |
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| 32 | |
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| 33 | int pcf50633_gpio_set(struct pcf50633 *pcf, int gpio, u8 val) |
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| 34 | { |
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| 35 | u8 reg; |
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| 36 | |
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| 37 | reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; |
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| 38 | |
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| 39 | return pcf50633_reg_set_bit_mask(pcf, reg, mask: 0x07, val); |
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| 40 | } |
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| 41 | EXPORT_SYMBOL_GPL(pcf50633_gpio_set); |
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| 42 | |
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| 43 | u8 pcf50633_gpio_get(struct pcf50633 *pcf, int gpio) |
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| 44 | { |
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| 45 | u8 reg, val; |
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| 46 | |
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| 47 | reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; |
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| 48 | val = pcf50633_reg_read(pcf, reg) & 0x07; |
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| 49 | |
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| 50 | return val; |
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| 51 | } |
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| 52 | EXPORT_SYMBOL_GPL(pcf50633_gpio_get); |
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| 53 | |
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| 54 | int pcf50633_gpio_invert_set(struct pcf50633 *pcf, int gpio, int invert) |
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| 55 | { |
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| 56 | u8 val, reg; |
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| 57 | |
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| 58 | reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; |
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| 59 | val = !!invert << 3; |
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| 60 | |
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| 61 | return pcf50633_reg_set_bit_mask(pcf, reg, mask: 1 << 3, val); |
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| 62 | } |
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| 63 | EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_set); |
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| 64 | |
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| 65 | int pcf50633_gpio_invert_get(struct pcf50633 *pcf, int gpio) |
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| 66 | { |
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| 67 | u8 reg, val; |
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| 68 | |
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| 69 | reg = gpio - PCF50633_GPIO1 + PCF50633_REG_GPIO1CFG; |
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| 70 | val = pcf50633_reg_read(pcf, reg); |
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| 71 | |
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| 72 | return val & (1 << 3); |
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| 73 | } |
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| 74 | EXPORT_SYMBOL_GPL(pcf50633_gpio_invert_get); |
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| 75 | |
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| 76 | int pcf50633_gpio_power_supply_set(struct pcf50633 *pcf, |
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| 77 | int gpio, int regulator, int on) |
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| 78 | { |
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| 79 | u8 reg, val, mask; |
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| 80 | |
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| 81 | /* the *ENA register is always one after the *OUT register */ |
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| 82 | reg = pcf50633_regulator_registers[regulator] + 1; |
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| 83 | |
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| 84 | val = !!on << (gpio - PCF50633_GPIO1); |
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| 85 | mask = 1 << (gpio - PCF50633_GPIO1); |
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| 86 | |
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| 87 | return pcf50633_reg_set_bit_mask(pcf, reg, mask, val); |
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| 88 | } |
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| 89 | EXPORT_SYMBOL_GPL(pcf50633_gpio_power_supply_set); |
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| 90 | |
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| 91 | MODULE_LICENSE("GPL" ); |
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| 92 | |
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