LXR linux/drivers/mfd/pcf50633-gpio.c

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