/* 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); }