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b45b719ee0
Add support for the TPS65912 device. It provides communication through I2C and contains the following components: - Regulators - Load switches - GPO controller Signed-off-by: Andrew F. Davis <afd@ti.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/*
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* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
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* Andrew F. Davis <afd@ti.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether expressed or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License version 2 for more details.
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*
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* Based on the TPS65912 driver
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*/
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/module.h>
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#include <linux/mfd/tps65086.h>
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static const struct mfd_cell tps65086_cells[] = {
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{ .name = "tps65086-regulator", },
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{ .name = "tps65086-gpio", },
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};
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static const struct regmap_range tps65086_yes_ranges[] = {
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regmap_reg_range(TPS65086_IRQ, TPS65086_IRQ),
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regmap_reg_range(TPS65086_PMICSTAT, TPS65086_SHUTDNSRC),
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regmap_reg_range(TPS65086_GPOCTRL, TPS65086_GPOCTRL),
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regmap_reg_range(TPS65086_PG_STATUS1, TPS65086_OC_STATUS),
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};
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static const struct regmap_access_table tps65086_volatile_table = {
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.yes_ranges = tps65086_yes_ranges,
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.n_yes_ranges = ARRAY_SIZE(tps65086_yes_ranges),
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};
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static const struct regmap_config tps65086_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.cache_type = REGCACHE_RBTREE,
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.volatile_table = &tps65086_volatile_table,
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};
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static const struct regmap_irq tps65086_irqs[] = {
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REGMAP_IRQ_REG(TPS65086_IRQ_DIETEMP, 0, TPS65086_IRQ_DIETEMP_MASK),
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REGMAP_IRQ_REG(TPS65086_IRQ_SHUTDN, 0, TPS65086_IRQ_SHUTDN_MASK),
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REGMAP_IRQ_REG(TPS65086_IRQ_FAULT, 0, TPS65086_IRQ_FAULT_MASK),
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};
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static struct regmap_irq_chip tps65086_irq_chip = {
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.name = "tps65086",
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.status_base = TPS65086_IRQ,
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.mask_base = TPS65086_IRQ_MASK,
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.ack_base = TPS65086_IRQ,
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.init_ack_masked = true,
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.num_regs = 1,
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.irqs = tps65086_irqs,
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.num_irqs = ARRAY_SIZE(tps65086_irqs),
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};
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static const struct of_device_id tps65086_of_match_table[] = {
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{ .compatible = "ti,tps65086", },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, tps65086_of_match_table);
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static int tps65086_probe(struct i2c_client *client,
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const struct i2c_device_id *ids)
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{
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struct tps65086 *tps;
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unsigned int version;
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int ret;
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tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);
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if (!tps)
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return -ENOMEM;
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i2c_set_clientdata(client, tps);
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tps->dev = &client->dev;
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tps->irq = client->irq;
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tps->regmap = devm_regmap_init_i2c(client, &tps65086_regmap_config);
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if (IS_ERR(tps->regmap)) {
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dev_err(tps->dev, "Failed to initialize register map\n");
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return PTR_ERR(tps->regmap);
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}
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ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version);
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if (ret) {
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dev_err(tps->dev, "Failed to read revision register\n");
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return ret;
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}
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dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n",
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(version & TPS65086_DEVICEID_PART_MASK),
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(char)((version & TPS65086_DEVICEID_OTP_MASK) >> 4) + 'A',
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(version & TPS65086_DEVICEID_REV_MASK) >> 6);
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ret = regmap_add_irq_chip(tps->regmap, tps->irq, IRQF_ONESHOT, 0,
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&tps65086_irq_chip, &tps->irq_data);
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if (ret) {
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dev_err(tps->dev, "Failed to register IRQ chip\n");
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return ret;
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}
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ret = mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO, tps65086_cells,
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ARRAY_SIZE(tps65086_cells), NULL, 0,
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regmap_irq_get_domain(tps->irq_data));
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if (ret) {
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regmap_del_irq_chip(tps->irq, tps->irq_data);
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return ret;
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}
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return 0;
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}
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static int tps65086_remove(struct i2c_client *client)
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{
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struct tps65086 *tps = i2c_get_clientdata(client);
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regmap_del_irq_chip(tps->irq, tps->irq_data);
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return 0;
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}
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static const struct i2c_device_id tps65086_id_table[] = {
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{ "tps65086", 0 },
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{ /* sentinel */ }
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};
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MODULE_DEVICE_TABLE(i2c, tps65086_id_table);
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static struct i2c_driver tps65086_driver = {
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.driver = {
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.name = "tps65086",
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.of_match_table = tps65086_of_match_table,
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},
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.probe = tps65086_probe,
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.remove = tps65086_remove,
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.id_table = tps65086_id_table,
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};
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module_i2c_driver(tps65086_driver);
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MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
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MODULE_DESCRIPTION("TPS65086 PMIC Driver");
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MODULE_LICENSE("GPL v2");
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