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/* da9063-irq.c: Interrupts support for Dialog DA9063
*
* Copyright 2012 Dialog Semiconductor Ltd.
* Copyright 2013 Philipp Zabel, Pengutronix
*
* Author: Michal Hajduk <michal.hajduk@diasemi.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/irq.h>
#include <linux/mfd/core.h>
#include <linux/interrupt.h>
#include <linux/regmap.h>
#include <linux/mfd/da9063/core.h>
#include <linux/mfd/da9063/pdata.h>
#define DA9063_REG_EVENT_A_OFFSET 0
#define DA9063_REG_EVENT_B_OFFSET 1
#define DA9063_REG_EVENT_C_OFFSET 2
#define DA9063_REG_EVENT_D_OFFSET 3
#define EVENTS_BUF_LEN 4
static const u8 mask_events_buf[] = { [0 ... (EVENTS_BUF_LEN - 1)] = ~0 };
struct da9063_irq_data {
u16 reg;
u8 mask;
};
static struct regmap_irq da9063_irqs[] = {
/* DA9063 event A register */
[DA9063_IRQ_ONKEY] = {
.reg_offset = DA9063_REG_EVENT_A_OFFSET,
.mask = DA9063_M_ONKEY,
},
[DA9063_IRQ_ALARM] = {
.reg_offset = DA9063_REG_EVENT_A_OFFSET,
.mask = DA9063_M_ALARM,
},
[DA9063_IRQ_TICK] = {
.reg_offset = DA9063_REG_EVENT_A_OFFSET,
.mask = DA9063_M_TICK,
},
[DA9063_IRQ_ADC_RDY] = {
.reg_offset = DA9063_REG_EVENT_A_OFFSET,
.mask = DA9063_M_ADC_RDY,
},
[DA9063_IRQ_SEQ_RDY] = {
.reg_offset = DA9063_REG_EVENT_A_OFFSET,
.mask = DA9063_M_SEQ_RDY,
},
/* DA9063 event B register */
[DA9063_IRQ_WAKE] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_WAKE,
},
[DA9063_IRQ_TEMP] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_TEMP,
},
[DA9063_IRQ_COMP_1V2] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_COMP_1V2,
},
[DA9063_IRQ_LDO_LIM] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_LDO_LIM,
},
[DA9063_IRQ_REG_UVOV] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_UVOV,
},
[DA9063_IRQ_VDD_MON] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_VDD_MON,
},
[DA9063_IRQ_WARN] = {
.reg_offset = DA9063_REG_EVENT_B_OFFSET,
.mask = DA9063_M_VDD_WARN,
},
/* DA9063 event C register */
[DA9063_IRQ_GPI0] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI0,
},
[DA9063_IRQ_GPI1] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI1,
},
[DA9063_IRQ_GPI2] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI2,
},
[DA9063_IRQ_GPI3] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI3,
},
[DA9063_IRQ_GPI4] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI4,
},
[DA9063_IRQ_GPI5] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI5,
},
[DA9063_IRQ_GPI6] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI6,
},
[DA9063_IRQ_GPI7] = {
.reg_offset = DA9063_REG_EVENT_C_OFFSET,
.mask = DA9063_M_GPI7,
},
/* DA9063 event D register */
[DA9063_IRQ_GPI8] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI8,
},
[DA9063_IRQ_GPI9] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI9,
},
[DA9063_IRQ_GPI10] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI10,
},
[DA9063_IRQ_GPI11] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI11,
},
[DA9063_IRQ_GPI12] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI12,
},
[DA9063_IRQ_GPI13] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI13,
},
[DA9063_IRQ_GPI14] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI14,
},
[DA9063_IRQ_GPI15] = {
.reg_offset = DA9063_REG_EVENT_D_OFFSET,
.mask = DA9063_M_GPI15,
},
};
static struct regmap_irq_chip da9063_irq_chip = {
.name = "da9063-irq",
.irqs = da9063_irqs,
.num_irqs = DA9063_NUM_IRQ,
.num_regs = 4,
.status_base = DA9063_REG_EVENT_A,
.mask_base = DA9063_REG_IRQ_MASK_A,
.ack_base = DA9063_REG_EVENT_A,
.init_ack_masked = true,
};
int da9063_irq_init(struct da9063 *da9063)
{
int ret;
if (!da9063->chip_irq) {
dev_err(da9063->dev, "No IRQ configured\n");
return -EINVAL;
}
ret = regmap_add_irq_chip(da9063->regmap, da9063->chip_irq,
IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
da9063->irq_base, &da9063_irq_chip,
&da9063->regmap_irq);
if (ret) {
dev_err(da9063->dev, "Failed to reguest IRQ %d: %d\n",
da9063->chip_irq, ret);
return ret;
}
return 0;
}
void da9063_irq_exit(struct da9063 *da9063)
{
regmap_del_irq_chip(da9063->chip_irq, da9063->regmap_irq);
}
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