LXR linux/drivers/mfd/tps65912-core.c

   1/*
   2 * Core functions for TI TPS65912x PMICs
   3 *
   4 * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
   5 *      Andrew F. Davis <afd@ti.com>
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12 * kind, whether expressed or implied; without even the implied warranty
  13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License version 2 for more details.
  15 *
  16 * Based on the TPS65218 driver and the previous TPS65912 driver by
  17 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
  18 */
  19
  20#include <linux/interrupt.h>
  21#include <linux/mfd/core.h>
  22#include <linux/module.h>
  23
  24#include <linux/mfd/tps65912.h>
  25
  26static const struct mfd_cell tps65912_cells[] = {
  27        { .name = "tps65912-regulator", },
  28        { .name = "tps65912-gpio", },
  29};
  30
  31static const struct regmap_irq tps65912_irqs[] = {
  32        /* INT_STS IRQs */
  33        REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_F, 0, TPS65912_INT_STS_PWRHOLD_F),
  34        REGMAP_IRQ_REG(TPS65912_IRQ_VMON, 0, TPS65912_INT_STS_VMON),
  35        REGMAP_IRQ_REG(TPS65912_IRQ_PWRON, 0, TPS65912_INT_STS_PWRON),
  36        REGMAP_IRQ_REG(TPS65912_IRQ_PWRON_LP, 0, TPS65912_INT_STS_PWRON_LP),
  37        REGMAP_IRQ_REG(TPS65912_IRQ_PWRHOLD_R, 0, TPS65912_INT_STS_PWRHOLD_R),
  38        REGMAP_IRQ_REG(TPS65912_IRQ_HOTDIE, 0, TPS65912_INT_STS_HOTDIE),
  39        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_R, 0, TPS65912_INT_STS_GPIO1_R),
  40        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO1_F, 0, TPS65912_INT_STS_GPIO1_F),
  41        /* INT_STS2 IRQs */
  42        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_R, 1, TPS65912_INT_STS2_GPIO2_R),
  43        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO2_F, 1, TPS65912_INT_STS2_GPIO2_F),
  44        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_R, 1, TPS65912_INT_STS2_GPIO3_R),
  45        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO3_F, 1, TPS65912_INT_STS2_GPIO3_F),
  46        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_R, 1, TPS65912_INT_STS2_GPIO4_R),
  47        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO4_F, 1, TPS65912_INT_STS2_GPIO4_F),
  48        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_R, 1, TPS65912_INT_STS2_GPIO5_R),
  49        REGMAP_IRQ_REG(TPS65912_IRQ_GPIO5_F, 1, TPS65912_INT_STS2_GPIO5_F),
  50        /* INT_STS3 IRQs */
  51        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC1, 2, TPS65912_INT_STS3_PGOOD_DCDC1),
  52        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC2, 2, TPS65912_INT_STS3_PGOOD_DCDC2),
  53        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC3, 2, TPS65912_INT_STS3_PGOOD_DCDC3),
  54        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_DCDC4, 2, TPS65912_INT_STS3_PGOOD_DCDC4),
  55        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO1, 2, TPS65912_INT_STS3_PGOOD_LDO1),
  56        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO2, 2, TPS65912_INT_STS3_PGOOD_LDO2),
  57        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO3, 2, TPS65912_INT_STS3_PGOOD_LDO3),
  58        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO4, 2, TPS65912_INT_STS3_PGOOD_LDO4),
  59        /* INT_STS4 IRQs */
  60        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO5, 3, TPS65912_INT_STS4_PGOOD_LDO5),
  61        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO6, 3, TPS65912_INT_STS4_PGOOD_LDO6),
  62        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO7, 3, TPS65912_INT_STS4_PGOOD_LDO7),
  63        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO8, 3, TPS65912_INT_STS4_PGOOD_LDO8),
  64        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO9, 3, TPS65912_INT_STS4_PGOOD_LDO9),
  65        REGMAP_IRQ_REG(TPS65912_IRQ_PGOOD_LDO10, 3, TPS65912_INT_STS4_PGOOD_LDO10),
  66};
  67
  68static struct regmap_irq_chip tps65912_irq_chip = {
  69        .name = "tps65912",
  70        .irqs = tps65912_irqs,
  71        .num_irqs = ARRAY_SIZE(tps65912_irqs),
  72        .num_regs = 4,
  73        .irq_reg_stride = 2,
  74        .mask_base = TPS65912_INT_MSK,
  75        .status_base = TPS65912_INT_STS,
  76        .ack_base = TPS65912_INT_STS,
  77        .init_ack_masked = true,
  78};
  79
  80static const struct regmap_range tps65912_yes_ranges[] = {
  81        regmap_reg_range(TPS65912_INT_STS, TPS65912_GPIO5),
  82};
  83
  84static const struct regmap_access_table tps65912_volatile_table = {
  85        .yes_ranges = tps65912_yes_ranges,
  86        .n_yes_ranges = ARRAY_SIZE(tps65912_yes_ranges),
  87};
  88
  89const struct regmap_config tps65912_regmap_config = {
  90        .reg_bits = 8,
  91        .val_bits = 8,
  92        .cache_type = REGCACHE_RBTREE,
  93        .volatile_table = &tps65912_volatile_table,
  94};
  95EXPORT_SYMBOL_GPL(tps65912_regmap_config);
  96
  97int tps65912_device_init(struct tps65912 *tps)
  98{
  99        int ret;
 100
 101        ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
 102                                  &tps65912_irq_chip, &tps->irq_data);
 103        if (ret)
 104                return ret;
 105
 106        ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65912_cells,
 107                              ARRAY_SIZE(tps65912_cells), NULL, 0,
 108                              regmap_irq_get_domain(tps->irq_data));
 109        if (ret) {
 110                regmap_del_irq_chip(tps->irq, tps->irq_data);
 111                return ret;
 112        }
 113
 114        return 0;
 115}
 116EXPORT_SYMBOL_GPL(tps65912_device_init);
 117
 118int tps65912_device_exit(struct tps65912 *tps)
 119{
 120        regmap_del_irq_chip(tps->irq, tps->irq_data);
 121
 122        return 0;
 123}
 124EXPORT_SYMBOL_GPL(tps65912_device_exit);
 125
 126MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 127MODULE_DESCRIPTION("TPS65912x MFD Driver");
 128MODULE_LICENSE("GPL v2");
 129