drivers/mfd/da9063-irq.c

   1 /* da9063-irq.c: Interrupts support for Dialog DA9063
   2  *
   3  * Copyright 2012 Dialog Semiconductor Ltd.
   4  * Copyright 2013 Philipp Zabel, Pengutronix
   5  *
   6  * Author: Michal Hajduk, Dialog Semiconductor
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  *
  13  */
  14
  15 #include <linux/kernel.h>
  16 #include <linux/module.h>
  17 #include <linux/irq.h>
  18 #include <linux/mfd/core.h>
  19 #include <linux/interrupt.h>
  20 #include <linux/regmap.h>
  21 #include <linux/mfd/da9063/core.h>
  22 #include <linux/mfd/da9063/pdata.h>
  23
  24 #define DA9063_REG_EVENT_A_OFFSET       0
  25 #define DA9063_REG_EVENT_B_OFFSET       1
  26 #define DA9063_REG_EVENT_C_OFFSET       2
  27 #define DA9063_REG_EVENT_D_OFFSET       3
  28
  29 static const struct regmap_irq da9063_irqs[] = {
  30         /* DA9063 event A register */
  31         [DA9063_IRQ_ONKEY] = {
  32                 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
  33                 .mask = DA9063_M_ONKEY,
  34         },
  35         [DA9063_IRQ_ALARM] = {
  36                 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
  37                 .mask = DA9063_M_ALARM,
  38         },
  39         [DA9063_IRQ_TICK] = {
  40                 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
  41                 .mask = DA9063_M_TICK,
  42         },
  43         [DA9063_IRQ_ADC_RDY] = {
  44                 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
  45                 .mask = DA9063_M_ADC_RDY,
  46         },
  47         [DA9063_IRQ_SEQ_RDY] = {
  48                 .reg_offset = DA9063_REG_EVENT_A_OFFSET,
  49                 .mask = DA9063_M_SEQ_RDY,
  50         },
  51         /* DA9063 event B register */
  52         [DA9063_IRQ_WAKE] = {
  53                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  54                 .mask = DA9063_M_WAKE,
  55         },
  56         [DA9063_IRQ_TEMP] = {
  57                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  58                 .mask = DA9063_M_TEMP,
  59         },
  60         [DA9063_IRQ_COMP_1V2] = {
  61                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  62                 .mask = DA9063_M_COMP_1V2,
  63         },
  64         [DA9063_IRQ_LDO_LIM] = {
  65                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  66                 .mask = DA9063_M_LDO_LIM,
  67         },
  68         [DA9063_IRQ_REG_UVOV] = {
  69                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  70                 .mask = DA9063_M_UVOV,
  71         },
  72         [DA9063_IRQ_DVC_RDY] = {
  73                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  74                 .mask = DA9063_M_DVC_RDY,
  75         },
  76         [DA9063_IRQ_VDD_MON] = {
  77                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  78                 .mask = DA9063_M_VDD_MON,
  79         },
  80         [DA9063_IRQ_WARN] = {
  81                 .reg_offset = DA9063_REG_EVENT_B_OFFSET,
  82                 .mask = DA9063_M_VDD_WARN,
  83         },
  84         /* DA9063 event C register */
  85         [DA9063_IRQ_GPI0] = {
  86                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
  87                 .mask = DA9063_M_GPI0,
  88         },
  89         [DA9063_IRQ_GPI1] = {
  90                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
  91                 .mask = DA9063_M_GPI1,
  92         },
  93         [DA9063_IRQ_GPI2] = {
  94                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
  95                 .mask = DA9063_M_GPI2,
  96         },
  97         [DA9063_IRQ_GPI3] = {
  98                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
  99                 .mask = DA9063_M_GPI3,
 100         },
 101         [DA9063_IRQ_GPI4] = {
 102                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
 103                 .mask = DA9063_M_GPI4,
 104         },
 105         [DA9063_IRQ_GPI5] = {
 106                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
 107                 .mask = DA9063_M_GPI5,
 108         },
 109         [DA9063_IRQ_GPI6] = {
 110                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
 111                 .mask = DA9063_M_GPI6,
 112         },
 113         [DA9063_IRQ_GPI7] = {
 114                 .reg_offset = DA9063_REG_EVENT_C_OFFSET,
 115                 .mask = DA9063_M_GPI7,
 116         },
 117         /* DA9063 event D register */
 118         [DA9063_IRQ_GPI8] = {
 119                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 120                 .mask = DA9063_M_GPI8,
 121         },
 122         [DA9063_IRQ_GPI9] = {
 123                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 124                 .mask = DA9063_M_GPI9,
 125         },
 126         [DA9063_IRQ_GPI10] = {
 127                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 128                 .mask = DA9063_M_GPI10,
 129         },
 130         [DA9063_IRQ_GPI11] = {
 131                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 132                 .mask = DA9063_M_GPI11,
 133         },
 134         [DA9063_IRQ_GPI12] = {
 135                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 136                 .mask = DA9063_M_GPI12,
 137         },
 138         [DA9063_IRQ_GPI13] = {
 139                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 140                 .mask = DA9063_M_GPI13,
 141         },
 142         [DA9063_IRQ_GPI14] = {
 143                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 144                 .mask = DA9063_M_GPI14,
 145         },
 146         [DA9063_IRQ_GPI15] = {
 147                 .reg_offset = DA9063_REG_EVENT_D_OFFSET,
 148                 .mask = DA9063_M_GPI15,
 149         },
 150 };
 151
 152 static const struct regmap_irq_chip da9063_irq_chip = {
 153         .name = "da9063-irq",
 154         .irqs = da9063_irqs,
 155         .num_irqs = DA9063_NUM_IRQ,
 156
 157         .num_regs = 4,
 158         .status_base = DA9063_REG_EVENT_A,
 159         .mask_base = DA9063_REG_IRQ_MASK_A,
 160         .ack_base = DA9063_REG_EVENT_A,
 161         .init_ack_masked = true,
 162 };
 163
 164 int da9063_irq_init(struct da9063 *da9063)
 165 {
 166         int ret;
 167
 168         if (!da9063->chip_irq) {
 169                 dev_err(da9063->dev, "No IRQ configured\n");
 170                 return -EINVAL;
 171         }
 172
 173         ret = regmap_add_irq_chip(da9063->regmap, da9063->chip_irq,
 174                         IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED,
 175                         da9063->irq_base, &da9063_irq_chip,
 176                         &da9063->regmap_irq);
 177         if (ret) {
 178                 dev_err(da9063->dev, "Failed to reguest IRQ %d: %d\n",
 179                                 da9063->chip_irq, ret);
 180                 return ret;
 181         }
 182
 183         return 0;
 184 }
 185
 186 void da9063_irq_exit(struct da9063 *da9063)
 187 {
 188         regmap_del_irq_chip(da9063->chip_irq, da9063->regmap_irq);
 189 }