cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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pcf50633-gpio.c (2520B)

      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");