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Viewing File: /usr/src/kernels/5.14.0-570.32.1.el9_6.x86_64/include/linux/mfd/stmfx.h
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright (C) 2019 STMicroelectronics
* Author(s): Amelie Delaunay <amelie.delaunay@st.com>.
*/
#ifndef MFD_STMFX_H
#define MFD_STMFX_H
#include <linux/regmap.h>
/* General */
#define STMFX_REG_CHIP_ID 0x00 /* R */
#define STMFX_REG_FW_VERSION_MSB 0x01 /* R */
#define STMFX_REG_FW_VERSION_LSB 0x02 /* R */
#define STMFX_REG_SYS_CTRL 0x40 /* RW */
/* IRQ output management */
#define STMFX_REG_IRQ_OUT_PIN 0x41 /* RW */
#define STMFX_REG_IRQ_SRC_EN 0x42 /* RW */
#define STMFX_REG_IRQ_PENDING 0x08 /* R */
#define STMFX_REG_IRQ_ACK 0x44 /* RW */
/* GPIO management */
#define STMFX_REG_IRQ_GPI_PENDING1 0x0C /* R */
#define STMFX_REG_IRQ_GPI_PENDING2 0x0D /* R */
#define STMFX_REG_IRQ_GPI_PENDING3 0x0E /* R */
#define STMFX_REG_GPIO_STATE1 0x10 /* R */
#define STMFX_REG_GPIO_STATE2 0x11 /* R */
#define STMFX_REG_GPIO_STATE3 0x12 /* R */
#define STMFX_REG_IRQ_GPI_SRC1 0x48 /* RW */
#define STMFX_REG_IRQ_GPI_SRC2 0x49 /* RW */
#define STMFX_REG_IRQ_GPI_SRC3 0x4A /* RW */
#define STMFX_REG_IRQ_GPI_EVT1 0x4C /* RW */
#define STMFX_REG_IRQ_GPI_EVT2 0x4D /* RW */
#define STMFX_REG_IRQ_GPI_EVT3 0x4E /* RW */
#define STMFX_REG_IRQ_GPI_TYPE1 0x50 /* RW */
#define STMFX_REG_IRQ_GPI_TYPE2 0x51 /* RW */
#define STMFX_REG_IRQ_GPI_TYPE3 0x52 /* RW */
#define STMFX_REG_IRQ_GPI_ACK1 0x54 /* RW */
#define STMFX_REG_IRQ_GPI_ACK2 0x55 /* RW */
#define STMFX_REG_IRQ_GPI_ACK3 0x56 /* RW */
#define STMFX_REG_GPIO_DIR1 0x60 /* RW */
#define STMFX_REG_GPIO_DIR2 0x61 /* RW */
#define STMFX_REG_GPIO_DIR3 0x62 /* RW */
#define STMFX_REG_GPIO_TYPE1 0x64 /* RW */
#define STMFX_REG_GPIO_TYPE2 0x65 /* RW */
#define STMFX_REG_GPIO_TYPE3 0x66 /* RW */
#define STMFX_REG_GPIO_PUPD1 0x68 /* RW */
#define STMFX_REG_GPIO_PUPD2 0x69 /* RW */
#define STMFX_REG_GPIO_PUPD3 0x6A /* RW */
#define STMFX_REG_GPO_SET1 0x6C /* RW */
#define STMFX_REG_GPO_SET2 0x6D /* RW */
#define STMFX_REG_GPO_SET3 0x6E /* RW */
#define STMFX_REG_GPO_CLR1 0x70 /* RW */
#define STMFX_REG_GPO_CLR2 0x71 /* RW */
#define STMFX_REG_GPO_CLR3 0x72 /* RW */
#define STMFX_REG_MAX 0xB0
/* MFX boot time is around 10ms, so after reset, we have to wait this delay */
#define STMFX_BOOT_TIME_MS 10
/* STMFX_REG_CHIP_ID bitfields */
#define STMFX_REG_CHIP_ID_MASK GENMASK(7, 0)
/* STMFX_REG_SYS_CTRL bitfields */
#define STMFX_REG_SYS_CTRL_GPIO_EN BIT(0)
#define STMFX_REG_SYS_CTRL_TS_EN BIT(1)
#define STMFX_REG_SYS_CTRL_IDD_EN BIT(2)
#define STMFX_REG_SYS_CTRL_ALTGPIO_EN BIT(3)
#define STMFX_REG_SYS_CTRL_SWRST BIT(7)
/* STMFX_REG_IRQ_OUT_PIN bitfields */
#define STMFX_REG_IRQ_OUT_PIN_TYPE BIT(0) /* 0-OD 1-PP */
#define STMFX_REG_IRQ_OUT_PIN_POL BIT(1) /* 0-active LOW 1-active HIGH */
/* STMFX_REG_IRQ_(SRC_EN/PENDING/ACK) bit shift */
enum stmfx_irqs {
STMFX_REG_IRQ_SRC_EN_GPIO = 0,
STMFX_REG_IRQ_SRC_EN_IDD,
STMFX_REG_IRQ_SRC_EN_ERROR,
STMFX_REG_IRQ_SRC_EN_TS_DET,
STMFX_REG_IRQ_SRC_EN_TS_NE,
STMFX_REG_IRQ_SRC_EN_TS_TH,
STMFX_REG_IRQ_SRC_EN_TS_FULL,
STMFX_REG_IRQ_SRC_EN_TS_OVF,
STMFX_REG_IRQ_SRC_MAX,
};
enum stmfx_functions {
STMFX_FUNC_GPIO = BIT(0), /* GPIO[15:0] */
STMFX_FUNC_ALTGPIO_LOW = BIT(1), /* aGPIO[3:0] */
STMFX_FUNC_ALTGPIO_HIGH = BIT(2), /* aGPIO[7:4] */
STMFX_FUNC_TS = BIT(3),
STMFX_FUNC_IDD = BIT(4),
};
/**
* struct stmfx_ddata - STMFX MFD structure
* @device: device reference used for logs
* @map: register map
* @vdd: STMFX power supply
* @irq_domain: IRQ domain
* @lock: IRQ bus lock
* @irq_src: cache of IRQ_SRC_EN register for bus_lock
* @bkp_sysctrl: backup of SYS_CTRL register for suspend/resume
* @bkp_irqoutpin: backup of IRQ_OUT_PIN register for suspend/resume
*/
struct stmfx {
struct device *dev;
struct regmap *map;
struct regulator *vdd;
int irq;
struct irq_domain *irq_domain;
struct mutex lock; /* IRQ bus lock */
u8 irq_src;
#ifdef CONFIG_PM
u8 bkp_sysctrl;
u8 bkp_irqoutpin;
#endif
};
int stmfx_function_enable(struct stmfx *stmfx, u32 func);
int stmfx_function_disable(struct stmfx *stmfx, u32 func);
#endif
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