projects / mirror_ubuntu-zesty-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b45b719e AD |
1 | /* |
| 2 | * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/ | |
| 3 | * Andrew F. Davis <afd@ti.com> | |
| 4 | * | |
| 5 | * This program is free software; you can redistribute it and/or | |
| 6 | * modify it under the terms of the GNU General Public License version 2 as | |
| 7 | * published by the Free Software Foundation. | |
| 8 | * | |
| 9 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any | |
| 10 | * kind, whether expressed or implied; without even the implied warranty | |
| 11 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 | * GNU General Public License version 2 for more details. | |
| 13 | * | |
| 14 | * Based on the TPS65912 driver | |
| 15 | */ | |
| 16 | ||
| 17 | #include <linux/i2c.h> | |
| 18 | #include <linux/interrupt.h> | |
| 19 | #include <linux/mfd/core.h> | |
| 20 | #include <linux/module.h> | |
| 21 | ||
| 22 | #include <linux/mfd/tps65086.h> | |
| 23 | ||
| 24 | static const struct mfd_cell tps65086_cells[] = { | |
| 25 | { .name = "tps65086-regulator", }, | |
| 26 | { .name = "tps65086-gpio", }, | |
| 27 | }; | |
| 28 | ||
| 29 | static const struct regmap_range tps65086_yes_ranges[] = { | |
| 30 | regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ), | |
| 31 | regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC), | |
| 32 | regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL), | |
| 33 | regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS), | |
| 34 | }; | |
| 35 | ||
| 36 | static const struct regmap_access_table tps65086_volatile_table = { | |
| 37 | .yes_ranges = tps65086_yes_ranges, | |
| 38 | .n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges), | |
| 39 | }; | |
| 40 | ||
| 41 | static const struct regmap_config tps65086_regmap_config = { | |
| 42 | .reg_bits = 8, | |
| 43 | .val_bits = 8, | |
| 44 | .cache_type = REGCACHE_RBTREE, | |
| 45 | .volatile_table = &tps65086_volatile_table, | |
| 46 | }; | |
| 47 | ||
| 48 | static const struct regmap_irq tps65086_irqs[] = { | |
| 49 | REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK), | |
| 50 | REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK), | |
| 51 | REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK), | |
| 52 | }; | |
| 53 | ||
| 54 | static struct regmap_irq_chip tps65086_irq_chip = { | |
| 55 | .name = "tps65086", | |
| 56 | .status_base = TPS65086_IRQ, | |
| 57 | .mask_base = TPS65086_IRQ_MASK, | |
| 58 | .ack_base = TPS65086_IRQ, | |
| 59 | .init_ack_masked = true, | |
| 60 | .num_regs = 1, | |
| 61 | .irqs = tps65086_irqs, | |
| 62 | .num_irqs = ARRAY_SIZE(tps65086_irqs), | |
| 63 | }; | |
| 64 | ||
| 65 | static const struct of_device_id tps65086_of_match_table[] = { | |
| 66 | { .compatible = "ti,tps65086", }, | |
| 67 | { /* sentinel */ } | |
| 68 | }; | |
| 69 | MODULE_DEVICE_TABLE(of, tps65086_of_match_table); | |
| 70 | ||
| 71 | static int tps65086_probe(struct i2c_client *client, | |
| 72 | const struct i2c_device_id *ids) | |
| 73 | { | |
| 74 | struct tps65086 *tps; | |
| 75 | unsigned int version; | |
| 76 | int ret; | |
| 77 | ||
| 78 | tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); | |
| 79 | if (!tps) | |
| 80 | return -ENOMEM; | |
| 81 | ||
| 82 | i2c_set_clientdata(client, tps); | |
| 83 | tps->dev = &client->dev; | |
| 84 | tps->irq = client->irq; | |
| 85 | ||
| 86 | tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config); | |
| 87 | if (IS_ERR(tps->regmap)) { | |
| 88 | dev_err(tps->dev, "Failed to initialize register map\n"); | |
| 89 | return PTR_ERR(tps->regmap); | |
| 90 | } | |
| 91 | ||
| 92 | ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version); | |
| 93 | if (ret) { | |
| 94 | dev_err(tps->dev, "Failed to read revision register\n"); | |
| 95 | return ret; | |
| 96 | } | |
| 97 | ||
| 98 | dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n", | |
| 99 | (version & TPS65086_DEVICEID_PART_MASK), | |
| 100 | (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A', | |
| 101 | (version & TPS65086_DEVICEID_REV_MASK) >> 6); | |
| 102 | ||
| 103 | ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0, | |
| 104 | &tps65086_irq_chip, &tps->irq_data); | |
| 105 | if (ret) { | |
| 106 | dev_err(tps->dev, "Failed to register IRQ chip\n"); | |
| 107 | return ret; | |
| 108 | } | |
| 109 | ||
| 110 | ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells, | |
| 111 | ARRAY_SIZE(tps65086_cells), NULL, 0, | |
| 112 | regmap_irq_get_domain(tps->irq_data)); | |
| 113 | if (ret) { | |
| 114 | regmap_del_irq_chip(tps->irq, tps->irq_data); | |
| 115 | return ret; | |
| 116 | } | |
| 117 | ||
| 118 | return 0; | |
| 119 | } | |
| 120 | ||
| 121 | static int tps65086_remove(struct i2c_client *client) | |
| 122 | { | |
| 123 | struct tps65086 *tps = i2c_get_clientdata(client); | |
| 124 | ||
| 125 | regmap_del_irq_chip(tps->irq, tps->irq_data); | |
| 126 | ||
| 127 | return 0; | |
| 128 | } | |
| 129 | ||
| 130 | static const struct i2c_device_id tps65086_id_table[] = { | |
| 131 | { "tps65086", 0 }, | |
| 132 | { /* sentinel */ } | |
| 133 | }; | |
| 134 | MODULE_DEVICE_TABLE(i2c, tps65086_id_table); | |
| 135 | ||
| 136 | static struct i2c_driver tps65086_driver = { | |
| 137 | .driver = { | |
| 138 | .name = "tps65086", | |
| 139 | .of_match_table = tps65086_of_match_table, | |
| 140 | }, | |
| 141 | .probe = tps65086_probe, | |
| 142 | .remove = tps65086_remove, | |
| 143 | .id_table = tps65086_id_table, | |
| 144 | }; | |
| 145 | module_i2c_driver(tps65086_driver); | |
| 146 | ||
| 147 | MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); | |
| 148 | MODULE_DESCRIPTION("TPS65086 PMIC Driver"); | |
| 149 | MODULE_LICENSE("GPL v2"); |