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
  26 static const struct mfd_cell tps65912_cells[] = {
  27         { .name = "tps65912-regulator", },
  28         { .name = "tps65912-gpio", },
  29 };
  30
  31 static 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
  68 static 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
  80 static const struct regmap_range tps65912_yes_ranges[] = {
  81         regmap_reg_range(TPS65912_INT_STS, TPS65912_GPIO5),
  82 };
  83
  84 static 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
  89 const 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 };
  95 EXPORT_SYMBOL_GPL(tps65912_regmap_config);
  96
  97 int 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 }
 116 EXPORT_SYMBOL_GPL(tps65912_device_init);
 117
 118 int tps65912_device_exit(struct tps65912 *tps)
 119 {
 120         regmap_del_irq_chip(tps->irq, tps->irq_data);
 121
 122         return 0;
 123 }
 124 EXPORT_SYMBOL_GPL(tps65912_device_exit);
 125
 126 MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
 127 MODULE_DESCRIPTION("TPS65912x MFD Driver");
 128 MODULE_LICENSE("GPL v2");