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 <michal.hajduk@diasemi.com> 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 #define EVENTS_BUF_LEN 4 29 30 static const u8 mask_events_buf[] = { [0 ... (EVENTS_BUF_LEN - 1)] = ~0 }; 31 32 struct da9063_irq_data { 33 u16 reg; 34 u8 mask; 35 }; 36 37 static struct regmap_irq da9063_irqs[] = { 38 /* DA9063 event A register */ 39 [DA9063_IRQ_ONKEY] = { 40 .reg_offset = DA9063_REG_EVENT_A_OFFSET, 41 .mask = DA9063_M_ONKEY, 42 }, 43 [DA9063_IRQ_ALARM] = { 44 .reg_offset = DA9063_REG_EVENT_A_OFFSET, 45 .mask = DA9063_M_ALARM, 46 }, 47 [DA9063_IRQ_TICK] = { 48 .reg_offset = DA9063_REG_EVENT_A_OFFSET, 49 .mask = DA9063_M_TICK, 50 }, 51 [DA9063_IRQ_ADC_RDY] = { 52 .reg_offset = DA9063_REG_EVENT_A_OFFSET, 53 .mask = DA9063_M_ADC_RDY, 54 }, 55 [DA9063_IRQ_SEQ_RDY] = { 56 .reg_offset = DA9063_REG_EVENT_A_OFFSET, 57 .mask = DA9063_M_SEQ_RDY, 58 }, 59 /* DA9063 event B register */ 60 [DA9063_IRQ_WAKE] = { 61 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 62 .mask = DA9063_M_WAKE, 63 }, 64 [DA9063_IRQ_TEMP] = { 65 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 66 .mask = DA9063_M_TEMP, 67 }, 68 [DA9063_IRQ_COMP_1V2] = { 69 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 70 .mask = DA9063_M_COMP_1V2, 71 }, 72 [DA9063_IRQ_LDO_LIM] = { 73 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 74 .mask = DA9063_M_LDO_LIM, 75 }, 76 [DA9063_IRQ_REG_UVOV] = { 77 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 78 .mask = DA9063_M_UVOV, 79 }, 80 [DA9063_IRQ_VDD_MON] = { 81 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 82 .mask = DA9063_M_VDD_MON, 83 }, 84 [DA9063_IRQ_WARN] = { 85 .reg_offset = DA9063_REG_EVENT_B_OFFSET, 86 .mask = DA9063_M_VDD_WARN, 87 }, 88 /* DA9063 event C register */ 89 [DA9063_IRQ_GPI0] = { 90 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 91 .mask = DA9063_M_GPI0, 92 }, 93 [DA9063_IRQ_GPI1] = { 94 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 95 .mask = DA9063_M_GPI1, 96 }, 97 [DA9063_IRQ_GPI2] = { 98 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 99 .mask = DA9063_M_GPI2, 100 }, 101 [DA9063_IRQ_GPI3] = { 102 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 103 .mask = DA9063_M_GPI3, 104 }, 105 [DA9063_IRQ_GPI4] = { 106 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 107 .mask = DA9063_M_GPI4, 108 }, 109 [DA9063_IRQ_GPI5] = { 110 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 111 .mask = DA9063_M_GPI5, 112 }, 113 [DA9063_IRQ_GPI6] = { 114 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 115 .mask = DA9063_M_GPI6, 116 }, 117 [DA9063_IRQ_GPI7] = { 118 .reg_offset = DA9063_REG_EVENT_C_OFFSET, 119 .mask = DA9063_M_GPI7, 120 }, 121 /* DA9063 event D register */ 122 [DA9063_IRQ_GPI8] = { 123 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 124 .mask = DA9063_M_GPI8, 125 }, 126 [DA9063_IRQ_GPI9] = { 127 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 128 .mask = DA9063_M_GPI9, 129 }, 130 [DA9063_IRQ_GPI10] = { 131 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 132 .mask = DA9063_M_GPI10, 133 }, 134 [DA9063_IRQ_GPI11] = { 135 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 136 .mask = DA9063_M_GPI11, 137 }, 138 [DA9063_IRQ_GPI12] = { 139 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 140 .mask = DA9063_M_GPI12, 141 }, 142 [DA9063_IRQ_GPI13] = { 143 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 144 .mask = DA9063_M_GPI13, 145 }, 146 [DA9063_IRQ_GPI14] = { 147 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 148 .mask = DA9063_M_GPI14, 149 }, 150 [DA9063_IRQ_GPI15] = { 151 .reg_offset = DA9063_REG_EVENT_D_OFFSET, 152 .mask = DA9063_M_GPI15, 153 }, 154 }; 155 156 static struct regmap_irq_chip da9063_irq_chip = { 157 .name = "da9063-irq", 158 .irqs = da9063_irqs, 159 .num_irqs = DA9063_NUM_IRQ, 160 161 .num_regs = 4, 162 .status_base = DA9063_REG_EVENT_A, 163 .mask_base = DA9063_REG_IRQ_MASK_A, 164 .ack_base = DA9063_REG_EVENT_A, 165 .init_ack_masked = true, 166 }; 167 168 int da9063_irq_init(struct da9063 *da9063) 169 { 170 int ret; 171 172 if (!da9063->chip_irq) { 173 dev_err(da9063->dev, "No IRQ configured\n"); 174 return -EINVAL; 175 } 176 177 ret = regmap_add_irq_chip(da9063->regmap, da9063->chip_irq, 178 IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_SHARED, 179 da9063->irq_base, &da9063_irq_chip, 180 &da9063->regmap_irq); 181 if (ret) { 182 dev_err(da9063->dev, "Failed to reguest IRQ %d: %d\n", 183 da9063->chip_irq, ret); 184 return ret; 185 } 186 187 return 0; 188 } 189 190 void da9063_irq_exit(struct da9063 *da9063) 191 { 192 regmap_del_irq_chip(da9063->chip_irq, da9063->regmap_irq); 193 } 194