mfd: Add support for TPS68470 device
The TPS68470 device is an advanced power management unit that powers a Compact Camera Module (CCM), generates clocks for image sensors, drives a dual LED for Flash and incorporates two LED drivers for general purpose indicators. This patch adds support for TPS68470 mfd device. Signed-off-by: Rajmohan Mani <rajmohan.mani@intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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Rajmohan Mani
Lee Jones
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commit
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4 changed files with 222 additions and 0 deletions
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@ -1352,6 +1352,24 @@ config MFD_TPS65217
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This driver can also be built as a module. If so, the module
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will be called tps65217.
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config MFD_TPS68470
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bool "TI TPS68470 Power Management / LED chips"
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depends on ACPI && I2C=y
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select MFD_CORE
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select REGMAP_I2C
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select I2C_DESIGNWARE_PLATFORM
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help
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If you say yes here you get support for the TPS68470 series of
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Power Management / LED chips.
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These include voltage regulators, LEDs and other features
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that are often used in portable devices.
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This option is a bool as it provides an ACPI operation
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region, which must be available before any of the devices
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using this are probed. This option also configures the
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designware-i2c driver to be built-in, for the same reason.
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config MFD_TI_LP873X
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tristate "TI LP873X Power Management IC"
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depends on I2C
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@ -84,6 +84,7 @@ obj-$(CONFIG_MFD_TPS65910) += tps65910.o
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obj-$(CONFIG_MFD_TPS65912) += tps65912-core.o
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obj-$(CONFIG_MFD_TPS65912_I2C) += tps65912-i2c.o
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obj-$(CONFIG_MFD_TPS65912_SPI) += tps65912-spi.o
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obj-$(CONFIG_MFD_TPS68470) += tps68470.o
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obj-$(CONFIG_MFD_TPS80031) += tps80031.o
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obj-$(CONFIG_MENELAUS) += menelaus.o
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106
drivers/mfd/tps68470.c
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106
drivers/mfd/tps68470.c
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@ -0,0 +1,106 @@
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/*
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* TPS68470 chip Parent driver
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*
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* Copyright (C) 2017 Intel Corporation
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*
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* Authors:
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* Rajmohan Mani <rajmohan.mani@intel.com>
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* Tianshu Qiu <tian.shu.qiu@intel.com>
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* Jian Xu Zheng <jian.xu.zheng@intel.com>
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* Yuning Pu <yuning.pu@intel.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 as
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* published by the Free Software Foundation version 2.
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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 express 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 for more details.
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*/
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#include <linux/acpi.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/init.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/tps68470.h>
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#include <linux/regmap.h>
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static const struct mfd_cell tps68470s[] = {
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{ .name = "tps68470-gpio" },
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{ .name = "tps68470_pmic_opregion" },
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};
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static const struct regmap_config tps68470_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = TPS68470_REG_MAX,
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};
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static int tps68470_chip_init(struct device *dev, struct regmap *regmap)
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{
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unsigned int version;
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int ret;
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/* Force software reset */
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ret = regmap_write(regmap, TPS68470_REG_RESET, TPS68470_REG_RESET_MASK);
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if (ret)
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return ret;
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ret = regmap_read(regmap, TPS68470_REG_REVID, &version);
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if (ret) {
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dev_err(dev, "Failed to read revision register: %d\n", ret);
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return ret;
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}
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dev_info(dev, "TPS68470 REVID: 0x%x\n", version);
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return 0;
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}
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static int tps68470_probe(struct i2c_client *client)
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{
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struct device *dev = &client->dev;
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struct regmap *regmap;
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int ret;
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regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config);
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if (IS_ERR(regmap)) {
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dev_err(dev, "devm_regmap_init_i2c Error %ld\n",
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PTR_ERR(regmap));
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return PTR_ERR(regmap);
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}
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i2c_set_clientdata(client, regmap);
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ret = tps68470_chip_init(dev, regmap);
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if (ret < 0) {
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dev_err(dev, "TPS68470 Init Error %d\n", ret);
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return ret;
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}
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ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE, tps68470s,
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ARRAY_SIZE(tps68470s), NULL, 0, NULL);
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if (ret < 0) {
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dev_err(dev, "devm_mfd_add_devices failed: %d\n", ret);
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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 const struct acpi_device_id tps68470_acpi_ids[] = {
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{"INT3472"},
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{},
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};
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MODULE_DEVICE_TABLE(acpi, tps68470_acpi_ids);
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static struct i2c_driver tps68470_driver = {
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.driver = {
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.name = "tps68470",
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.acpi_match_table = tps68470_acpi_ids,
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},
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.probe_new = tps68470_probe,
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};
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builtin_i2c_driver(tps68470_driver);
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97
include/linux/mfd/tps68470.h
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97
include/linux/mfd/tps68470.h
Normal file
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@ -0,0 +1,97 @@
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/*
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* Copyright (c) 2017 Intel Corporation
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*
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* Functions to access TPS68470 power management chip.
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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 as
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* published by the Free Software Foundation version 2.
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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 express 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 for more details.
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*/
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#ifndef __LINUX_MFD_TPS68470_H
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#define __LINUX_MFD_TPS68470_H
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/* Register addresses */
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#define TPS68470_REG_POSTDIV2 0x06
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#define TPS68470_REG_BOOSTDIV 0x07
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#define TPS68470_REG_BUCKDIV 0x08
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#define TPS68470_REG_PLLSWR 0x09
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#define TPS68470_REG_XTALDIV 0x0A
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#define TPS68470_REG_PLLDIV 0x0B
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#define TPS68470_REG_POSTDIV 0x0C
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#define TPS68470_REG_PLLCTL 0x0D
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#define TPS68470_REG_PLLCTL2 0x0E
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#define TPS68470_REG_CLKCFG1 0x0F
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#define TPS68470_REG_CLKCFG2 0x10
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#define TPS68470_REG_GPCTL0A 0x14
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#define TPS68470_REG_GPCTL0B 0x15
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#define TPS68470_REG_GPCTL1A 0x16
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#define TPS68470_REG_GPCTL1B 0x17
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#define TPS68470_REG_GPCTL2A 0x18
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#define TPS68470_REG_GPCTL2B 0x19
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#define TPS68470_REG_GPCTL3A 0x1A
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#define TPS68470_REG_GPCTL3B 0x1B
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#define TPS68470_REG_GPCTL4A 0x1C
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#define TPS68470_REG_GPCTL4B 0x1D
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#define TPS68470_REG_GPCTL5A 0x1E
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#define TPS68470_REG_GPCTL5B 0x1F
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#define TPS68470_REG_GPCTL6A 0x20
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#define TPS68470_REG_GPCTL6B 0x21
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#define TPS68470_REG_SGPO 0x22
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#define TPS68470_REG_GPDI 0x26
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#define TPS68470_REG_GPDO 0x27
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#define TPS68470_REG_VCMVAL 0x3C
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#define TPS68470_REG_VAUX1VAL 0x3D
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#define TPS68470_REG_VAUX2VAL 0x3E
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#define TPS68470_REG_VIOVAL 0x3F
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#define TPS68470_REG_VSIOVAL 0x40
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#define TPS68470_REG_VAVAL 0x41
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#define TPS68470_REG_VDVAL 0x42
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#define TPS68470_REG_S_I2C_CTL 0x43
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#define TPS68470_REG_VCMCTL 0x44
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#define TPS68470_REG_VAUX1CTL 0x45
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#define TPS68470_REG_VAUX2CTL 0x46
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#define TPS68470_REG_VACTL 0x47
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#define TPS68470_REG_VDCTL 0x48
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#define TPS68470_REG_RESET 0x50
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#define TPS68470_REG_REVID 0xFF
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#define TPS68470_REG_MAX TPS68470_REG_REVID
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/* Register field definitions */
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#define TPS68470_REG_RESET_MASK GENMASK(7, 0)
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#define TPS68470_VAVAL_AVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VDVAL_DVOLT_MASK GENMASK(5, 0)
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#define TPS68470_VCMVAL_VCVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VIOVAL_IOVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VSIOVAL_IOVOLT_MASK GENMASK(6, 0)
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#define TPS68470_VAUX1VAL_AUX1VOLT_MASK GENMASK(6, 0)
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#define TPS68470_VAUX2VAL_AUX2VOLT_MASK GENMASK(6, 0)
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#define TPS68470_VACTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VDCTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VCMCTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_S_I2C_CTL_EN_MASK GENMASK(1, 0)
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#define TPS68470_VAUX1CTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_VAUX2CTL_EN_MASK GENMASK(0, 0)
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#define TPS68470_PLL_EN_MASK GENMASK(0, 0)
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#define TPS68470_CLKCFG1_MODE_A_MASK GENMASK(1, 0)
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#define TPS68470_CLKCFG1_MODE_B_MASK GENMASK(3, 2)
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#define TPS68470_GPIO_CTL_REG_A(x) (TPS68470_REG_GPCTL0A + (x) * 2)
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#define TPS68470_GPIO_CTL_REG_B(x) (TPS68470_REG_GPCTL0B + (x) * 2)
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#define TPS68470_GPIO_MODE_MASK GENMASK(1, 0)
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#define TPS68470_GPIO_MODE_IN 0
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#define TPS68470_GPIO_MODE_IN_PULLUP 1
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#define TPS68470_GPIO_MODE_OUT_CMOS 2
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#define TPS68470_GPIO_MODE_OUT_ODRAIN 3
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#endif /* __LINUX_MFD_TPS68470_H */
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