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drivers/mfd/tps65086.c
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81f7e3824 Initial Release, ... |
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/* * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/ * Andrew F. Davis <afd@ti.com> * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * * This program is distributed "as is" WITHOUT ANY WARRANTY of any * kind, whether expressed or implied; without even the implied warranty * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License version 2 for more details. * * Based on the TPS65912 driver */ #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/mfd/core.h> #include <linux/module.h> #include <linux/mfd/tps65086.h> static const struct mfd_cell tps65086_cells[] = { { .name = "tps65086-regulator", }, { .name = "tps65086-gpio", }, }; static const struct regmap_range tps65086_yes_ranges[] = { regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ), regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC), regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL), regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS), }; static const struct regmap_access_table tps65086_volatile_table = { .yes_ranges = tps65086_yes_ranges, .n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges), }; static const struct regmap_config tps65086_regmap_config = { .reg_bits = 8, .val_bits = 8, .cache_type = REGCACHE_RBTREE, .volatile_table = &tps65086_volatile_table, }; static const struct regmap_irq tps65086_irqs[] = { REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK), REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK), REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK), }; static struct regmap_irq_chip tps65086_irq_chip = { .name = "tps65086", .status_base = TPS65086_IRQ, .mask_base = TPS65086_IRQ_MASK, .ack_base = TPS65086_IRQ, .init_ack_masked = true, .num_regs = 1, .irqs = tps65086_irqs, .num_irqs = ARRAY_SIZE(tps65086_irqs), }; static const struct of_device_id tps65086_of_match_table[] = { { .compatible = "ti,tps65086", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, tps65086_of_match_table); static int tps65086_probe(struct i2c_client *client, const struct i2c_device_id *ids) { struct tps65086 *tps; unsigned int version; int ret; tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL); if (!tps) return -ENOMEM; i2c_set_clientdata(client, tps); tps->dev = &client->dev; tps->irq = client->irq; tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config); if (IS_ERR(tps->regmap)) { dev_err(tps->dev, "Failed to initialize register map "); return PTR_ERR(tps->regmap); } ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version); if (ret) { dev_err(tps->dev, "Failed to read revision register "); return ret; } dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld ", (version & TPS65086_DEVICEID_PART_MASK), (char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A', (version & TPS65086_DEVICEID_REV_MASK) >> 6); ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0, &tps65086_irq_chip, &tps->irq_data); if (ret) { dev_err(tps->dev, "Failed to register IRQ chip "); return ret; } ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells, ARRAY_SIZE(tps65086_cells), NULL, 0, regmap_irq_get_domain(tps->irq_data)); if (ret) { regmap_del_irq_chip(tps->irq, tps->irq_data); return ret; } return 0; } static int tps65086_remove(struct i2c_client *client) { struct tps65086 *tps = i2c_get_clientdata(client); regmap_del_irq_chip(tps->irq, tps->irq_data); return 0; } static const struct i2c_device_id tps65086_id_table[] = { { "tps65086", 0 }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(i2c, tps65086_id_table); static struct i2c_driver tps65086_driver = { .driver = { .name = "tps65086", .of_match_table = tps65086_of_match_table, }, .probe = tps65086_probe, .remove = tps65086_remove, .id_table = tps65086_id_table, }; module_i2c_driver(tps65086_driver); MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>"); MODULE_DESCRIPTION("TPS65086 PMIC Driver"); MODULE_LICENSE("GPL v2"); |