diff options
author | Andrew F. Davis <afd@ti.com> | 2016-01-25 15:50:11 (GMT) |
---|---|---|
committer | Lee Jones <lee.jones@linaro.org> | 2016-03-16 08:50:15 (GMT) |
commit | b45b719ee03162eb54772c30a6474d57b41b6b54 (patch) | |
tree | 07f87dcc3b8d1395d0d79e881d3d8078ed0a4545 /drivers/mfd | |
parent | a85b9e0b3ccf4a90cd42f41fdfff1fc91513720c (diff) | |
download | linux-b45b719ee03162eb54772c30a6474d57b41b6b54.tar.xz |
mfd: tps65086: Add driver for the TPS65086 PMIC
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>
Diffstat (limited to 'drivers/mfd')
-rw-r--r-- | drivers/mfd/Kconfig | 13 | ||||
-rw-r--r-- | drivers/mfd/Makefile | 1 | ||||
-rw-r--r-- | drivers/mfd/tps65086.c | 149 |
3 files changed, 163 insertions, 0 deletions
diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index f479658..97d9406 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -1130,6 +1130,19 @@ config TPS6507X This driver can also be built as a module. If so, the module will be called tps6507x. +config MFD_TPS65086 + tristate "TI TPS65086 Power Management Integrated Chips (PMICs)" + select REGMAP + select REGMAP_IRQ + select REGMAP_I2C + depends on I2C + help + If you say yes here you get support for the TPS65086 series of + Power Management chips. + This driver provides common support for accessing the device, + additional drivers must be enabled in order to use the + functionality of the device. + config TPS65911_COMPARATOR tristate diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index b7a3cd9..d2ddcf4 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -70,6 +70,7 @@ obj-$(CONFIG_MFD_WM8994) += wm8994.o obj-$(CONFIG_TPS6105X) += tps6105x.o obj-$(CONFIG_TPS65010) += tps65010.o obj-$(CONFIG_TPS6507X) += tps6507x.o +obj-$(CONFIG_MFD_TPS65086) += tps65086.o obj-$(CONFIG_MFD_TPS65217) += tps65217.o obj-$(CONFIG_MFD_TPS65218) += tps65218.o obj-$(CONFIG_MFD_TPS65910) += tps65910.o diff --git a/drivers/mfd/tps65086.c b/drivers/mfd/tps65086.c new file mode 100644 index 0000000..43119a6 --- /dev/null +++ b/drivers/mfd/tps65086.c @@ -0,0 +1,149 @@ +/* + * 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\n"); + return PTR_ERR(tps->regmap); + } + + ret = regmap_read(tps->regmap, TPS65086_DEVICEID, &version); + if (ret) { + dev_err(tps->dev, "Failed to read revision register\n"); + return ret; + } + + dev_info(tps->dev, "Device: TPS65086%01lX, OTP: %c, Rev: %ld\n", + (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\n"); + 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"); |