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linux/drivers/mfd/stmpe.h
Uwe Kleine-König 356bbabade mfd: stmpe: Make stmpe_remove() return void 
Up to now stmpe_remove() returns zero unconditionally. Make it return
void instead which makes it easier to see in the callers that there is
no error to handle.

Also the return value of i2c and spi remove callbacks is ignored anyway.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Link: https://lore.kernel.org/r/20211012153945.2651412-10-u.kleine-koenig@pengutronix.de
2021-11-05 14:40:26 +00:00

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/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) ST-Ericsson SA 2010
*
* Author: Rabin Vincent <rabin.vincent@stericsson.com> for ST-Ericsson
*/
#ifndef __STMPE_H
#define __STMPE_H
#include <linux/device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/stmpe.h>
#include <linux/printk.h>
#include <linux/types.h>
extern const struct dev_pm_ops stmpe_dev_pm_ops;
#ifdef STMPE_DUMP_BYTES
static inline void stmpe_dump_bytes(const char *str, const void *buf,
size_t len)
{
print_hex_dump_bytes(str, DUMP_PREFIX_OFFSET, buf, len);
}
#else
static inline void stmpe_dump_bytes(const char *str, const void *buf,
size_t len)
{
}
#endif
/**
* struct stmpe_variant_block - information about block
* @cell: base mfd cell
* @irq: interrupt number to be added to each IORESOURCE_IRQ
* in the cell
* @block: block id; used for identification with platform data and for
* enable and altfunc callbacks
*/
struct stmpe_variant_block {
const struct mfd_cell *cell;
int irq;
enum stmpe_block block;
};
/**
* struct stmpe_variant_info - variant-specific information
* @name: part name
* @id_val: content of CHIPID register
* @id_mask: bits valid in CHIPID register for comparison with id_val
* @num_gpios: number of GPIOS
* @af_bits: number of bits used to specify the alternate function
* @regs: variant specific registers.
* @blocks: list of blocks present on this device
* @num_blocks: number of blocks present on this device
* @num_irqs: number of internal IRQs available on this device
* @enable: callback to enable the specified blocks.
* Called with the I/O lock held.
* @get_altfunc: callback to get the alternate function number for the
* specific block
* @enable_autosleep: callback to configure autosleep with specified timeout
*/
struct stmpe_variant_info {
const char *name;
u16 id_val;
u16 id_mask;
int num_gpios;
int af_bits;
const u8 *regs;
struct stmpe_variant_block *blocks;
int num_blocks;
int num_irqs;
int (*enable)(struct stmpe *stmpe, unsigned int blocks, bool enable);
int (*get_altfunc)(struct stmpe *stmpe, enum stmpe_block block);
int (*enable_autosleep)(struct stmpe *stmpe, int autosleep_timeout);
};
/**
* struct stmpe_client_info - i2c or spi specific routines/info
* @data: client specific data
* @read_byte: read single byte
* @write_byte: write single byte
* @read_block: read block or multiple bytes
* @write_block: write block or multiple bytes
* @init: client init routine, called during probe
*/
struct stmpe_client_info {
void *data;
int irq;
void *client;
struct device *dev;
int (*read_byte)(struct stmpe *stmpe, u8 reg);
int (*write_byte)(struct stmpe *stmpe, u8 reg, u8 val);
int (*read_block)(struct stmpe *stmpe, u8 reg, u8 len, u8 *values);
int (*write_block)(struct stmpe *stmpe, u8 reg, u8 len,
const u8 *values);
void (*init)(struct stmpe *stmpe);
};
int stmpe_probe(struct stmpe_client_info *ci, enum stmpe_partnum partnum);
void stmpe_remove(struct stmpe *stmpe);
#define STMPE_ICR_LSB_HIGH (1 << 2)
#define STMPE_ICR_LSB_EDGE (1 << 1)
#define STMPE_ICR_LSB_GIM (1 << 0)
#define STMPE_SYS_CTRL_RESET (1 << 7)
#define STMPE_SYS_CTRL_INT_EN (1 << 2)
#define STMPE_SYS_CTRL_INT_HI (1 << 0)
/*
* STMPE801
*/
#define STMPE801_ID 0x0108
#define STMPE801_NR_INTERNAL_IRQS 1
#define STMPE801_REG_CHIP_ID 0x00
#define STMPE801_REG_VERSION_ID 0x02
#define STMPE801_REG_SYS_CTRL 0x04
#define STMPE801_REG_GPIO_INT_EN 0x08
#define STMPE801_REG_GPIO_INT_STA 0x09
#define STMPE801_REG_GPIO_MP_STA 0x10
#define STMPE801_REG_GPIO_SET_PIN 0x11
#define STMPE801_REG_GPIO_DIR 0x12
/*
* STMPE811
*/
#define STMPE811_ID 0x0811
#define STMPE811_IRQ_TOUCH_DET 0
#define STMPE811_IRQ_FIFO_TH 1
#define STMPE811_IRQ_FIFO_OFLOW 2
#define STMPE811_IRQ_FIFO_FULL 3
#define STMPE811_IRQ_FIFO_EMPTY 4
#define STMPE811_IRQ_TEMP_SENS 5
#define STMPE811_IRQ_ADC 6
#define STMPE811_IRQ_GPIOC 7
#define STMPE811_NR_INTERNAL_IRQS 8
#define STMPE811_REG_CHIP_ID 0x00
#define STMPE811_REG_SYS_CTRL 0x03
#define STMPE811_REG_SYS_CTRL2 0x04
#define STMPE811_REG_SPI_CFG 0x08
#define STMPE811_REG_INT_CTRL 0x09
#define STMPE811_REG_INT_EN 0x0A
#define STMPE811_REG_INT_STA 0x0B
#define STMPE811_REG_GPIO_INT_EN 0x0C
#define STMPE811_REG_GPIO_INT_STA 0x0D
#define STMPE811_REG_GPIO_SET_PIN 0x10
#define STMPE811_REG_GPIO_CLR_PIN 0x11
#define STMPE811_REG_GPIO_MP_STA 0x12
#define STMPE811_REG_GPIO_DIR 0x13
#define STMPE811_REG_GPIO_ED 0x14
#define STMPE811_REG_GPIO_RE 0x15
#define STMPE811_REG_GPIO_FE 0x16
#define STMPE811_REG_GPIO_AF 0x17
#define STMPE811_SYS_CTRL_RESET (1 << 1)
#define STMPE811_SYS_CTRL2_ADC_OFF (1 << 0)
#define STMPE811_SYS_CTRL2_TSC_OFF (1 << 1)
#define STMPE811_SYS_CTRL2_GPIO_OFF (1 << 2)
#define STMPE811_SYS_CTRL2_TS_OFF (1 << 3)
/*
* STMPE1600
*/
#define STMPE1600_ID 0x0016
#define STMPE1600_NR_INTERNAL_IRQS 16
#define STMPE1600_REG_CHIP_ID 0x00
#define STMPE1600_REG_SYS_CTRL 0x03
#define STMPE1600_REG_IEGPIOR_LSB 0x08
#define STMPE1600_REG_IEGPIOR_MSB 0x09
#define STMPE1600_REG_ISGPIOR_LSB 0x0A
#define STMPE1600_REG_ISGPIOR_MSB 0x0B
#define STMPE1600_REG_GPMR_LSB 0x10
#define STMPE1600_REG_GPMR_MSB 0x11
#define STMPE1600_REG_GPSR_LSB 0x12
#define STMPE1600_REG_GPSR_MSB 0x13
#define STMPE1600_REG_GPDR_LSB 0x14
#define STMPE1600_REG_GPDR_MSB 0x15
#define STMPE1600_REG_GPPIR_LSB 0x16
#define STMPE1600_REG_GPPIR_MSB 0x17
/*
* STMPE1601
*/
#define STMPE1601_IRQ_GPIOC 8
#define STMPE1601_IRQ_PWM3 7
#define STMPE1601_IRQ_PWM2 6
#define STMPE1601_IRQ_PWM1 5
#define STMPE1601_IRQ_PWM0 4
#define STMPE1601_IRQ_KEYPAD_OVER 2
#define STMPE1601_IRQ_KEYPAD 1
#define STMPE1601_IRQ_WAKEUP 0
#define STMPE1601_NR_INTERNAL_IRQS 9
#define STMPE1601_REG_SYS_CTRL 0x02
#define STMPE1601_REG_SYS_CTRL2 0x03
#define STMPE1601_REG_ICR_MSB 0x10
#define STMPE1601_REG_ICR_LSB 0x11
#define STMPE1601_REG_IER_MSB 0x12
#define STMPE1601_REG_IER_LSB 0x13
#define STMPE1601_REG_ISR_MSB 0x14
#define STMPE1601_REG_ISR_LSB 0x15
#define STMPE1601_REG_INT_EN_GPIO_MASK_MSB 0x16
#define STMPE1601_REG_INT_EN_GPIO_MASK_LSB 0x17
#define STMPE1601_REG_INT_STA_GPIO_MSB 0x18
#define STMPE1601_REG_INT_STA_GPIO_LSB 0x19
#define STMPE1601_REG_CHIP_ID 0x80
#define STMPE1601_REG_GPIO_SET_MSB 0x82
#define STMPE1601_REG_GPIO_SET_LSB 0x83
#define STMPE1601_REG_GPIO_CLR_MSB 0x84
#define STMPE1601_REG_GPIO_CLR_LSB 0x85
#define STMPE1601_REG_GPIO_MP_MSB 0x86
#define STMPE1601_REG_GPIO_MP_LSB 0x87
#define STMPE1601_REG_GPIO_SET_DIR_MSB 0x88
#define STMPE1601_REG_GPIO_SET_DIR_LSB 0x89
#define STMPE1601_REG_GPIO_ED_MSB 0x8A
#define STMPE1601_REG_GPIO_ED_LSB 0x8B
#define STMPE1601_REG_GPIO_RE_MSB 0x8C
#define STMPE1601_REG_GPIO_RE_LSB 0x8D
#define STMPE1601_REG_GPIO_FE_MSB 0x8E
#define STMPE1601_REG_GPIO_FE_LSB 0x8F
#define STMPE1601_REG_GPIO_PU_MSB 0x90
#define STMPE1601_REG_GPIO_PU_LSB 0x91
#define STMPE1601_REG_GPIO_AF_U_MSB 0x92
#define STMPE1601_SYS_CTRL_ENABLE_GPIO (1 << 3)
#define STMPE1601_SYS_CTRL_ENABLE_KPC (1 << 1)
#define STMPE1601_SYS_CTRL_ENABLE_SPWM (1 << 0)
/* The 1601/2403 share the same masks */
#define STMPE1601_AUTOSLEEP_TIMEOUT_MASK (0x7)
#define STPME1601_AUTOSLEEP_ENABLE (1 << 3)
/*
* STMPE1801
*/
#define STMPE1801_ID 0xc110
#define STMPE1801_NR_INTERNAL_IRQS 5
#define STMPE1801_IRQ_KEYPAD_COMBI 4
#define STMPE1801_IRQ_GPIOC 3
#define STMPE1801_IRQ_KEYPAD_OVER 2
#define STMPE1801_IRQ_KEYPAD 1
#define STMPE1801_IRQ_WAKEUP 0
#define STMPE1801_REG_CHIP_ID 0x00
#define STMPE1801_REG_SYS_CTRL 0x02
#define STMPE1801_REG_INT_CTRL_LOW 0x04
#define STMPE1801_REG_INT_EN_MASK_LOW 0x06
#define STMPE1801_REG_INT_STA_LOW 0x08
#define STMPE1801_REG_INT_EN_GPIO_MASK_LOW 0x0A
#define STMPE1801_REG_INT_EN_GPIO_MASK_MID 0x0B
#define STMPE1801_REG_INT_EN_GPIO_MASK_HIGH 0x0C
#define STMPE1801_REG_INT_STA_GPIO_LOW 0x0D
#define STMPE1801_REG_INT_STA_GPIO_MID 0x0E
#define STMPE1801_REG_INT_STA_GPIO_HIGH 0x0F
#define STMPE1801_REG_GPIO_SET_LOW 0x10
#define STMPE1801_REG_GPIO_SET_MID 0x11
#define STMPE1801_REG_GPIO_SET_HIGH 0x12
#define STMPE1801_REG_GPIO_CLR_LOW 0x13
#define STMPE1801_REG_GPIO_CLR_MID 0x14
#define STMPE1801_REG_GPIO_CLR_HIGH 0x15
#define STMPE1801_REG_GPIO_MP_LOW 0x16
#define STMPE1801_REG_GPIO_MP_MID 0x17
#define STMPE1801_REG_GPIO_MP_HIGH 0x18
#define STMPE1801_REG_GPIO_SET_DIR_LOW 0x19
#define STMPE1801_REG_GPIO_SET_DIR_MID 0x1A
#define STMPE1801_REG_GPIO_SET_DIR_HIGH 0x1B
#define STMPE1801_REG_GPIO_RE_LOW 0x1C
#define STMPE1801_REG_GPIO_RE_MID 0x1D
#define STMPE1801_REG_GPIO_RE_HIGH 0x1E
#define STMPE1801_REG_GPIO_FE_LOW 0x1F
#define STMPE1801_REG_GPIO_FE_MID 0x20
#define STMPE1801_REG_GPIO_FE_HIGH 0x21
#define STMPE1801_REG_GPIO_PULL_UP_LOW 0x22
#define STMPE1801_REG_GPIO_PULL_UP_MID 0x23
#define STMPE1801_REG_GPIO_PULL_UP_HIGH 0x24
#define STMPE1801_MSK_INT_EN_KPC (1 << 1)
#define STMPE1801_MSK_INT_EN_GPIO (1 << 3)
/*
* STMPE24xx
*/
#define STMPE24XX_IRQ_GPIOC 8
#define STMPE24XX_IRQ_PWM2 7
#define STMPE24XX_IRQ_PWM1 6
#define STMPE24XX_IRQ_PWM0 5
#define STMPE24XX_IRQ_ROT_OVER 4
#define STMPE24XX_IRQ_ROT 3
#define STMPE24XX_IRQ_KEYPAD_OVER 2
#define STMPE24XX_IRQ_KEYPAD 1
#define STMPE24XX_IRQ_WAKEUP 0
#define STMPE24XX_NR_INTERNAL_IRQS 9
#define STMPE24XX_REG_SYS_CTRL 0x02
#define STMPE24XX_REG_SYS_CTRL2 0x03
#define STMPE24XX_REG_ICR_MSB 0x10
#define STMPE24XX_REG_ICR_LSB 0x11
#define STMPE24XX_REG_IER_MSB 0x12
#define STMPE24XX_REG_IER_LSB 0x13
#define STMPE24XX_REG_ISR_MSB 0x14
#define STMPE24XX_REG_ISR_LSB 0x15
#define STMPE24XX_REG_IEGPIOR_MSB 0x16
#define STMPE24XX_REG_IEGPIOR_CSB 0x17
#define STMPE24XX_REG_IEGPIOR_LSB 0x18
#define STMPE24XX_REG_ISGPIOR_MSB 0x19
#define STMPE24XX_REG_ISGPIOR_CSB 0x1A
#define STMPE24XX_REG_ISGPIOR_LSB 0x1B
#define STMPE24XX_REG_CHIP_ID 0x80
#define STMPE24XX_REG_GPSR_MSB 0x83
#define STMPE24XX_REG_GPSR_CSB 0x84
#define STMPE24XX_REG_GPSR_LSB 0x85
#define STMPE24XX_REG_GPCR_MSB 0x86
#define STMPE24XX_REG_GPCR_CSB 0x87
#define STMPE24XX_REG_GPCR_LSB 0x88
#define STMPE24XX_REG_GPDR_MSB 0x89
#define STMPE24XX_REG_GPDR_CSB 0x8A
#define STMPE24XX_REG_GPDR_LSB 0x8B
#define STMPE24XX_REG_GPEDR_MSB 0x8C
#define STMPE24XX_REG_GPEDR_CSB 0x8D
#define STMPE24XX_REG_GPEDR_LSB 0x8E
#define STMPE24XX_REG_GPRER_MSB 0x8F
#define STMPE24XX_REG_GPRER_CSB 0x90
#define STMPE24XX_REG_GPRER_LSB 0x91
#define STMPE24XX_REG_GPFER_MSB 0x92
#define STMPE24XX_REG_GPFER_CSB 0x93
#define STMPE24XX_REG_GPFER_LSB 0x94
#define STMPE24XX_REG_GPPUR_MSB 0x95
#define STMPE24XX_REG_GPPUR_CSB 0x96
#define STMPE24XX_REG_GPPUR_LSB 0x97
#define STMPE24XX_REG_GPPDR_MSB 0x98
#define STMPE24XX_REG_GPPDR_CSB 0x99
#define STMPE24XX_REG_GPPDR_LSB 0x9A
#define STMPE24XX_REG_GPAFR_U_MSB 0x9B
#define STMPE24XX_REG_GPMR_MSB 0xA2
#define STMPE24XX_REG_GPMR_CSB 0xA3
#define STMPE24XX_REG_GPMR_LSB 0xA4
#define STMPE24XX_SYS_CTRL_ENABLE_GPIO (1 << 3)
#define STMPE24XX_SYSCON_ENABLE_PWM (1 << 2)
#define STMPE24XX_SYS_CTRL_ENABLE_KPC (1 << 1)
#define STMPE24XX_SYSCON_ENABLE_ROT (1 << 0)
#endif
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