drivers/mfd/da9052-irq.c

Source file repositories/reference/linux-study-clean/drivers/mfd/da9052-irq.c

File Facts

System
Linux kernel
Corpus path
drivers/mfd/da9052-irq.c
Extension
.c
Size
6037 bytes
Lines
288
Domain
Driver Families
Bucket
drivers/mfd
Inferred role
Driver Families: exported/initcall integration point
Status
integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * DA9052 interrupt support
 *
 * Author: Fabio Estevam <fabio.estevam@freescale.com>
 * Based on arizona-irq.c, which is:
 *
 * Copyright 2012 Wolfson Microelectronics plc
 *
 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>
 */

#include <linux/device.h>
#include <linux/delay.h>
#include <linux/input.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <linux/slab.h>
#include <linux/module.h>

#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/reg.h>

#define DA9052_NUM_IRQ_REGS		4
#define DA9052_IRQ_MASK_POS_1		0x01
#define DA9052_IRQ_MASK_POS_2		0x02
#define DA9052_IRQ_MASK_POS_3		0x04
#define DA9052_IRQ_MASK_POS_4		0x08
#define DA9052_IRQ_MASK_POS_5		0x10
#define DA9052_IRQ_MASK_POS_6		0x20
#define DA9052_IRQ_MASK_POS_7		0x40
#define DA9052_IRQ_MASK_POS_8		0x80

static const struct regmap_irq da9052_irqs[] = {
	[DA9052_IRQ_DCIN] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_1,
	},
	[DA9052_IRQ_VBUS] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_2,
	},
	[DA9052_IRQ_DCINREM] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_3,
	},
	[DA9052_IRQ_VBUSREM] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_4,
	},
	[DA9052_IRQ_VDDLOW] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_5,
	},
	[DA9052_IRQ_ALARM] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_6,
	},
	[DA9052_IRQ_SEQRDY] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_7,
	},
	[DA9052_IRQ_COMP1V2] = {
		.reg_offset = 0,
		.mask = DA9052_IRQ_MASK_POS_8,
	},
	[DA9052_IRQ_NONKEY] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_1,
	},
	[DA9052_IRQ_IDFLOAT] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_2,
	},
	[DA9052_IRQ_IDGND] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_3,
	},
	[DA9052_IRQ_CHGEND] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_4,
	},
	[DA9052_IRQ_TBAT] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_5,
	},
	[DA9052_IRQ_ADC_EOM] = {
		.reg_offset = 1,
		.mask = DA9052_IRQ_MASK_POS_6,

Annotation

Implementation Notes