From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752469AbaFYTE3 (ORCPT ); Wed, 25 Jun 2014 15:04:29 -0400 Received: from bhuna.collabora.co.uk ([93.93.135.160]:60737 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755734AbaFYTEZ (ORCPT ); Wed, 25 Jun 2014 15:04:25 -0400 From: Javier Martinez Canillas To: Lee Jones Cc: Samuel Ortiz , Mark Brown , Mike Turquette , Liam Girdwood , Alessandro Zummo , Kukjin Kim , Doug Anderson , Olof Johansson , Sjoerd Simons , Daniel Stone , Tomeu Vizoso , Krzysztof Kozlowski , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Javier Martinez Canillas Subject: [PATCH v4 07/14] mfd: Add driver for Maxim 77802 Power Management IC Date: Wed, 25 Jun 2014 21:03:31 +0200 Message-Id: <1403723019-6212-8-git-send-email-javier.martinez@collabora.co.uk> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1403723019-6212-1-git-send-email-javier.martinez@collabora.co.uk> References: <1403723019-6212-1-git-send-email-javier.martinez@collabora.co.uk> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Maxim MAX77802 is a power management chip that contains 10 high efficiency Buck regulators, 32 Low-dropout (LDO) regulators used to power up application processors and peripherals, a 2-channel 32kHz clock outputs, a Real-Time-Clock (RTC) and a I2C interface to program the individual regulators, clocks outputs and the RTC. This patch adds the core support for MAX77802 PMIC and is based on a driver added by Simon Glass to the Chrome OS kernel 3.8 tree. Signed-off-by: Javier Martinez Canillas --- Changes since v3: - Remove unnecessary OOM error message since the mm subsystem already logs it. Changes since v2: - Split the DT binding docs in a separate patch and improve the documentation. Suggested by Mark Brown. - Add all the devices in the MFD driver instead of doing in separate patches. Suggested by Mark Brown. Changes since v1: - Convert max77{686,802} to regmap irq API and get rid of max77{686,802}-irq.c suggested by Krzysztof Kozlowski. - Don't protect max77802 mfd_cells using Kconfig options since mfd core omits devices that don't match. Suggested by Lee Jones. - Change mfd driver to be tristate instead of boolean. Suggested by Mark Brown. - Change binding "voltage-regulators" property to "regulators" to be consistent with other PMIC drivers. Suggested by Mark Brown. - Use regulators node names instead of the deprecated "regulator-compatible" property. Suggested by Mark Brown. - Use the new descriptor-based GPIO interface instead of the deprecated integer based GPIO one. Suggested by Mark Brown. - Remove the type parameter from i2c_device_id table since was not used. - Fix device not found error message and remove unneeded device found message. drivers/mfd/Kconfig | 14 ++ drivers/mfd/Makefile | 1 + drivers/mfd/max77802.c | 366 +++++++++++++++++++++++++++++++++++ include/linux/mfd/max77802-private.h | 307 +++++++++++++++++++++++++++++ include/linux/mfd/max77802.h | 121 ++++++++++++ 5 files changed, 809 insertions(+) create mode 100644 drivers/mfd/max77802.c create mode 100644 include/linux/mfd/max77802-private.h create mode 100644 include/linux/mfd/max77802.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b53cc5e..51c0716 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -406,6 +406,20 @@ config MFD_MAX77693 additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX77802 + tristate "Maxim Integrated MAX77802 PMIC Support" + depends on I2C=y + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + select IRQ_DOMAIN + help + Say yes here to support for Maxim Integrated MAX77802. + This is a Power Management IC with RTC on chip. + This driver provides common support for accessing the device; + additional drivers must be enabled in order to use the functionality + of the device. + config MFD_MAX8907 tristate "Maxim Semiconductor MAX8907 PMIC Support" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f001487..e795bfe 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -117,6 +117,7 @@ obj-$(CONFIG_MFD_DA9063) += da9063.o obj-$(CONFIG_MFD_MAX14577) += max14577.o obj-$(CONFIG_MFD_MAX77686) += max77686.o obj-$(CONFIG_MFD_MAX77693) += max77693.o +obj-$(CONFIG_MFD_MAX77802) += max77802.o obj-$(CONFIG_MFD_MAX8907) += max8907.o max8925-objs := max8925-core.o max8925-i2c.o obj-$(CONFIG_MFD_MAX8925) += max8925.o diff --git a/drivers/mfd/max77802.c b/drivers/mfd/max77802.c new file mode 100644 index 0000000..3d477fb --- /dev/null +++ b/drivers/mfd/max77802.c @@ -0,0 +1,366 @@ +/* + * max77802.c - mfd core driver for the Maxim 77802 + * + * Copyright (C) 2013-2014 Google, Inc + * Simon Glass + * + * Copyright (C) 2012 Samsung Electronics + * Chiwoong Byun + * Jonghwa Lee + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This driver is based on max8997.c + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell max77802_devs[] = { + { .name = "max77802-pmic", }, + { .name = "max77802-clk", }, + { .name = "max77802-rtc", }, +}; + +static bool max77802_pmic_is_accessible_reg(struct device *dev, + unsigned int reg) +{ + return (reg >= MAX77802_REG_DEVICE_ID && reg < MAX77802_REG_PMIC_END); +} + +static bool max77802_rtc_is_accessible_reg(struct device *dev, + unsigned int reg) +{ + return (reg >= MAX77802_RTC_INT && reg < MAX77802_RTC_END); +} + +static bool max77802_is_accessible_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_accessible_reg(dev, reg) || + max77802_rtc_is_accessible_reg(dev, reg)); +} + +static bool max77802_pmic_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (reg == MAX77802_REG_INTSRC || reg == MAX77802_REG_INT1 || + reg == MAX77802_REG_INT2); +} + +static bool max77802_rtc_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (reg == MAX77802_RTC_INT || + reg == MAX77802_RTC_UPDATE0 || + reg == MAX77802_RTC_UPDATE1); +} + +static bool max77802_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_precious_reg(dev, reg) || + max77802_rtc_is_precious_reg(dev, reg)); +} + +static bool max77802_pmic_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_is_precious_reg(dev, reg) || + reg == MAX77802_REG_STATUS1 || reg == MAX77802_REG_STATUS2 || + reg == MAX77802_REG_PWRON); +} + +static bool max77802_rtc_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_rtc_is_precious_reg(dev, reg) || + reg == MAX77802_RTC_SEC || + reg == MAX77802_RTC_MIN || + reg == MAX77802_RTC_HOUR || + reg == MAX77802_RTC_WEEKDAY || + reg == MAX77802_RTC_MONTH || + reg == MAX77802_RTC_YEAR || + reg == MAX77802_RTC_DATE); +} + +static bool max77802_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_volatile_reg(dev, reg) || + max77802_rtc_is_volatile_reg(dev, reg)); +} + +static struct regmap_config max77802_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .writeable_reg = max77802_is_accessible_reg, + .readable_reg = max77802_is_accessible_reg, + .precious_reg = max77802_is_precious_reg, + .volatile_reg = max77802_is_volatile_reg, + .name = "max77802-pmic", + .cache_type = REGCACHE_RBTREE, +}; + +static const struct regmap_irq max77802_irqs[] = { + /* INT1 interrupts */ + { .reg_offset = 0, .mask = MAX77802_INT1_PWRONF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_PWRONR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ONKEY1S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_MRSTB_MSK, }, + /* INT2 interrupts */ + { .reg_offset = 1, .mask = MAX77802_INT2_140C_MSK, }, + { .reg_offset = 1, .mask = MAX77802_INT2_120C_MSK, }, +}; + +static const struct regmap_irq_chip max77802_irq_chip = { + .name = "max77802-pmic", + .status_base = MAX77802_REG_INT1, + .mask_base = MAX77802_REG_INT1MSK, + .num_regs = 2, + .irqs = max77802_irqs, + .num_irqs = ARRAY_SIZE(max77802_irqs), +}; + +static const struct regmap_irq max77802_rtc_irqs[] = { + /* RTC interrupts */ + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC60S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA1_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA2_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_SMPL_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC1S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_WTSR_MSK, }, +}; + +static const struct regmap_irq_chip max77802_rtc_irq_chip = { + .name = "max77802-rtc", + .status_base = MAX77802_RTC_INT, + .mask_base = MAX77802_RTC_INTM, + .num_regs = 1, + .irqs = max77802_rtc_irqs, + .num_irqs = ARRAY_SIZE(max77802_rtc_irqs), +}; + +#ifdef CONFIG_OF +static struct of_device_id max77802_pmic_dt_match[] = { + {.compatible = "maxim,max77802", .data = NULL}, + {}, +}; + +static void max77802_dt_parse_dvs_gpio(struct device *dev, + struct max77802_platform_data *pd, + struct device_node *np) +{ + int i; + + /* + * NOTE: we don't consider GPIO errors fatal; board may have some lines + * directly pulled high or low and thus doesn't specify them. + */ + for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_dvs); i++) + pd->buck_gpio_dvs[i] = + devm_gpiod_get_index(dev, "max77802,pmic-buck-dvs", i); + + for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_selb); i++) + pd->buck_gpio_selb[i] = + devm_gpiod_get_index(dev, "max77802,pmic-buck-selb", i); +} + +static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device + *dev) +{ + struct device_node *np = dev->of_node; + struct max77802_platform_data *pd; + + pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return NULL; + + /* Read default index and ignore errors, since default is 0 */ + of_property_read_u32(np, "max77802,pmic-buck-default-dvs-idx", + &pd->buck_default_idx); + + max77802_dt_parse_dvs_gpio(dev, pd, np); + + dev->platform_data = pd; + return pd; +} +#else +static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device + *dev) +{ + return 0; +} +#endif + +static int max77802_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max77802_dev *max77802 = NULL; + struct max77802_platform_data *pdata = dev_get_platdata(&i2c->dev); + unsigned int data; + int ret = 0; + + if (i2c->dev.of_node) + pdata = max77802_i2c_parse_dt_pdata(&i2c->dev); + + if (!pdata) { + dev_err(&i2c->dev, "No platform data found.\n"); + return -EIO; + } + + max77802 = devm_kzalloc(&i2c->dev, sizeof(struct max77802_dev), + GFP_KERNEL); + if (max77802 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, max77802); + + max77802->dev = &i2c->dev; + max77802->i2c = i2c; + max77802->type = id->driver_data; + + max77802->wakeup = pdata->wakeup; + max77802->irq = i2c->irq; + + max77802->regmap = devm_regmap_init_i2c(i2c, &max77802_regmap_config); + if (IS_ERR(max77802->regmap)) { + ret = PTR_ERR(max77802->regmap); + dev_err(max77802->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + if (regmap_read(max77802->regmap, + MAX77802_REG_DEVICE_ID, &data) < 0) { + dev_err(max77802->dev, + "device not found on this channel\n"); + return -ENODEV; + } + + ret = regmap_add_irq_chip(max77802->regmap, max77802->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77802_irq_chip, + &max77802->irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret); + return ret; + } + ret = regmap_add_irq_chip(max77802->regmap, max77802->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77802_rtc_irq_chip, + &max77802->rtc_irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret); + goto err_del_irqc; + } + + ret = mfd_add_devices(max77802->dev, -1, max77802_devs, + ARRAY_SIZE(max77802_devs), NULL, 0, NULL); + if (ret < 0) { + dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret); + goto err_del_rtc_irqc; + } + + return 0; + +err_del_rtc_irqc: + regmap_del_irq_chip(max77802->irq, max77802->rtc_irq_data); +err_del_irqc: + regmap_del_irq_chip(max77802->irq, max77802->irq_data); + return ret; +} + +static int max77802_i2c_remove(struct i2c_client *i2c) +{ + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + mfd_remove_devices(max77802->dev); + + regmap_del_irq_chip(max77802->irq, max77802->rtc_irq_data); + regmap_del_irq_chip(max77802->irq, max77802->irq_data); + + return 0; +} + +static const struct i2c_device_id max77802_i2c_id[] = { + { "max77802", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max77802_i2c_id); + +#ifdef CONFIG_PM_SLEEP +static int max77802_suspend(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + enable_irq_wake(max77802->irq); + + disable_irq(max77802->irq); + + return 0; +} + +static int max77802_resume(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + disable_irq_wake(max77802->irq); + + enable_irq(max77802->irq); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(max77802_pm, max77802_suspend, max77802_resume); + +static struct i2c_driver max77802_i2c_driver = { + .driver = { + .name = "max77802", + .owner = THIS_MODULE, + .pm = &max77802_pm, + .of_match_table = of_match_ptr(max77802_pmic_dt_match), + }, + .probe = max77802_i2c_probe, + .remove = max77802_i2c_remove, + .id_table = max77802_i2c_id, +}; + +static int __init max77802_i2c_init(void) +{ + return i2c_add_driver(&max77802_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(max77802_i2c_init); + +static void __exit max77802_i2c_exit(void) +{ + i2c_del_driver(&max77802_i2c_driver); +} +module_exit(max77802_i2c_exit); + +MODULE_DESCRIPTION("MAXIM 77802 multi-function core driver"); +MODULE_AUTHOR("Simon Glass "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max77802-private.h b/include/linux/mfd/max77802-private.h new file mode 100644 index 0000000..7539ab4 --- /dev/null +++ b/include/linux/mfd/max77802-private.h @@ -0,0 +1,307 @@ +/* + * max77802-private.h - Voltage regulator driver for the Maxim 77802 + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __LINUX_MFD_MAX77802_PRIV_H +#define __LINUX_MFD_MAX77802_PRIV_H + +#include +#include +#include + +#define MAX77802_REG_INVALID (0xff) + +enum max77802_pmic_reg { + MAX77802_REG_DEVICE_ID = 0x00, + MAX77802_REG_INTSRC = 0x01, + MAX77802_REG_INT1 = 0x02, + MAX77802_REG_INT2 = 0x03, + + MAX77802_REG_INT1MSK = 0x04, + MAX77802_REG_INT2MSK = 0x05, + + MAX77802_REG_STATUS1 = 0x06, + MAX77802_REG_STATUS2 = 0x07, + + MAX77802_REG_PWRON = 0x08, + /* Reserved: 0x09 */ + MAX77802_REG_MRSTB = 0x0A, + MAX77802_REG_EPWRHOLD = 0x0B, + /* Reserved: 0x0C-0x0D */ + MAX77802_REG_BOOSTCTRL = 0x0E, + MAX77802_REG_BOOSTOUT = 0x0F, + + MAX77802_REG_BUCK1CTRL = 0x10, + MAX77802_REG_BUCK1DVS1 = 0x11, + MAX77802_REG_BUCK1DVS2 = 0x12, + MAX77802_REG_BUCK1DVS3 = 0x13, + MAX77802_REG_BUCK1DVS4 = 0x14, + MAX77802_REG_BUCK1DVS5 = 0x15, + MAX77802_REG_BUCK1DVS6 = 0x16, + MAX77802_REG_BUCK1DVS7 = 0x17, + MAX77802_REG_BUCK1DVS8 = 0x18, + /* Reserved: 0x19 */ + MAX77802_REG_BUCK2CTRL1 = 0x1A, + MAX77802_REG_BUCK2CTRL2 = 0x1B, + MAX77802_REG_BUCK2PHTRAN = 0x1C, + MAX77802_REG_BUCK2DVS1 = 0x1D, + MAX77802_REG_BUCK2DVS2 = 0x1E, + MAX77802_REG_BUCK2DVS3 = 0x1F, + MAX77802_REG_BUCK2DVS4 = 0x20, + MAX77802_REG_BUCK2DVS5 = 0x21, + MAX77802_REG_BUCK2DVS6 = 0x22, + MAX77802_REG_BUCK2DVS7 = 0x23, + MAX77802_REG_BUCK2DVS8 = 0x24, + /* Reserved: 0x25-0x26 */ + MAX77802_REG_BUCK3CTRL1 = 0x27, + MAX77802_REG_BUCK3DVS1 = 0x28, + MAX77802_REG_BUCK3DVS2 = 0x29, + MAX77802_REG_BUCK3DVS3 = 0x2A, + MAX77802_REG_BUCK3DVS4 = 0x2B, + MAX77802_REG_BUCK3DVS5 = 0x2C, + MAX77802_REG_BUCK3DVS6 = 0x2D, + MAX77802_REG_BUCK3DVS7 = 0x2E, + MAX77802_REG_BUCK3DVS8 = 0x2F, + /* Reserved: 0x30-0x36 */ + MAX77802_REG_BUCK4CTRL1 = 0x37, + MAX77802_REG_BUCK4DVS1 = 0x38, + MAX77802_REG_BUCK4DVS2 = 0x39, + MAX77802_REG_BUCK4DVS3 = 0x3A, + MAX77802_REG_BUCK4DVS4 = 0x3B, + MAX77802_REG_BUCK4DVS5 = 0x3C, + MAX77802_REG_BUCK4DVS6 = 0x3D, + MAX77802_REG_BUCK4DVS7 = 0x3E, + MAX77802_REG_BUCK4DVS8 = 0x3F, + /* Reserved: 0x40 */ + MAX77802_REG_BUCK5CTRL = 0x41, + MAX77802_REG_BUCK5OUT = 0x42, + /* Reserved: 0x43 */ + MAX77802_REG_BUCK6CTRL = 0x44, + MAX77802_REG_BUCK6DVS1 = 0x45, + MAX77802_REG_BUCK6DVS2 = 0x46, + MAX77802_REG_BUCK6DVS3 = 0x47, + MAX77802_REG_BUCK6DVS4 = 0x48, + MAX77802_REG_BUCK6DVS5 = 0x49, + MAX77802_REG_BUCK6DVS6 = 0x4A, + MAX77802_REG_BUCK6DVS7 = 0x4B, + MAX77802_REG_BUCK6DVS8 = 0x4C, + /* Reserved: 0x4D */ + MAX77802_REG_BUCK7CTRL = 0x4E, + MAX77802_REG_BUCK7OUT = 0x4F, + /* Reserved: 0x50 */ + MAX77802_REG_BUCK8CTRL = 0x51, + MAX77802_REG_BUCK8OUT = 0x52, + /* Reserved: 0x53 */ + MAX77802_REG_BUCK9CTRL = 0x54, + MAX77802_REG_BUCK9OUT = 0x55, + /* Reserved: 0x56 */ + MAX77802_REG_BUCK10CTRL = 0x57, + MAX77802_REG_BUCK10OUT = 0x58, + + /* Reserved: 0x59-0x5F */ + + MAX77802_REG_LDO1CTRL1 = 0x60, + MAX77802_REG_LDO2CTRL1 = 0x61, + MAX77802_REG_LDO3CTRL1 = 0x62, + MAX77802_REG_LDO4CTRL1 = 0x63, + MAX77802_REG_LDO5CTRL1 = 0x64, + MAX77802_REG_LDO6CTRL1 = 0x65, + MAX77802_REG_LDO7CTRL1 = 0x66, + MAX77802_REG_LDO8CTRL1 = 0x67, + MAX77802_REG_LDO9CTRL1 = 0x68, + MAX77802_REG_LDO10CTRL1 = 0x69, + MAX77802_REG_LDO11CTRL1 = 0x6A, + MAX77802_REG_LDO12CTRL1 = 0x6B, + MAX77802_REG_LDO13CTRL1 = 0x6C, + MAX77802_REG_LDO14CTRL1 = 0x6D, + MAX77802_REG_LDO15CTRL1 = 0x6E, + /* Reserved: 0x6F */ + MAX77802_REG_LDO17CTRL1 = 0x70, + MAX77802_REG_LDO18CTRL1 = 0x71, + MAX77802_REG_LDO19CTRL1 = 0x72, + MAX77802_REG_LDO20CTRL1 = 0x73, + MAX77802_REG_LDO21CTRL1 = 0x74, + MAX77802_REG_LDO22CTRL1 = 0x75, + MAX77802_REG_LDO23CTRL1 = 0x76, + MAX77802_REG_LDO24CTRL1 = 0x77, + MAX77802_REG_LDO25CTRL1 = 0x78, + MAX77802_REG_LDO26CTRL1 = 0x79, + MAX77802_REG_LDO27CTRL1 = 0x7A, + MAX77802_REG_LDO28CTRL1 = 0x7B, + MAX77802_REG_LDO29CTRL1 = 0x7C, + MAX77802_REG_LDO30CTRL1 = 0x7D, + /* Reserved: 0x7E */ + MAX77802_REG_LDO32CTRL1 = 0x7F, + MAX77802_REG_LDO33CTRL1 = 0x80, + MAX77802_REG_LDO34CTRL1 = 0x81, + MAX77802_REG_LDO35CTRL1 = 0x82, + /* Reserved: 0x83-0x8F */ + MAX77802_REG_LDO1CTRL2 = 0x90, + MAX77802_REG_LDO2CTRL2 = 0x91, + MAX77802_REG_LDO3CTRL2 = 0x92, + MAX77802_REG_LDO4CTRL2 = 0x93, + MAX77802_REG_LDO5CTRL2 = 0x94, + MAX77802_REG_LDO6CTRL2 = 0x95, + MAX77802_REG_LDO7CTRL2 = 0x96, + MAX77802_REG_LDO8CTRL2 = 0x97, + MAX77802_REG_LDO9CTRL2 = 0x98, + MAX77802_REG_LDO10CTRL2 = 0x99, + MAX77802_REG_LDO11CTRL2 = 0x9A, + MAX77802_REG_LDO12CTRL2 = 0x9B, + MAX77802_REG_LDO13CTRL2 = 0x9C, + MAX77802_REG_LDO14CTRL2 = 0x9D, + MAX77802_REG_LDO15CTRL2 = 0x9E, + /* Reserved: 0x9F */ + MAX77802_REG_LDO17CTRL2 = 0xA0, + MAX77802_REG_LDO18CTRL2 = 0xA1, + MAX77802_REG_LDO19CTRL2 = 0xA2, + MAX77802_REG_LDO20CTRL2 = 0xA3, + MAX77802_REG_LDO21CTRL2 = 0xA4, + MAX77802_REG_LDO22CTRL2 = 0xA5, + MAX77802_REG_LDO23CTRL2 = 0xA6, + MAX77802_REG_LDO24CTRL2 = 0xA7, + MAX77802_REG_LDO25CTRL2 = 0xA8, + MAX77802_REG_LDO26CTRL2 = 0xA9, + MAX77802_REG_LDO27CTRL2 = 0xAA, + MAX77802_REG_LDO28CTRL2 = 0xAB, + MAX77802_REG_LDO29CTRL2 = 0xAC, + MAX77802_REG_LDO30CTRL2 = 0xAD, + /* Reserved: 0xAE */ + MAX77802_REG_LDO32CTRL2 = 0xAF, + MAX77802_REG_LDO33CTRL2 = 0xB0, + MAX77802_REG_LDO34CTRL2 = 0xB1, + MAX77802_REG_LDO35CTRL2 = 0xB2, + /* Reserved: 0xB3 */ + + MAX77802_REG_BBAT_CHG = 0xB4, + MAX77802_REG_32KHZ = 0xB5, + + MAX77802_REG_PMIC_END = 0xB6, +}; + +enum max77802_rtc_reg { + MAX77802_RTC_INT = 0xC0, + MAX77802_RTC_INTM = 0xC1, + MAX77802_RTC_CONTROLM = 0xC2, + MAX77802_RTC_CONTROL = 0xC3, + MAX77802_RTC_UPDATE0 = 0xC4, + MAX77802_RTC_UPDATE1 = 0xC5, + MAX77802_WTSR_SMPL_CNTL = 0xC6, + MAX77802_RTC_SEC = 0xC7, + MAX77802_RTC_MIN = 0xC8, + MAX77802_RTC_HOUR = 0xC9, + MAX77802_RTC_WEEKDAY = 0xCA, + MAX77802_RTC_MONTH = 0xCB, + MAX77802_RTC_YEAR = 0xCC, + MAX77802_RTC_DATE = 0xCD, + MAX77802_RTC_AE1 = 0xCE, + MAX77802_ALARM1_SEC = 0xCF, + MAX77802_ALARM1_MIN = 0xD0, + MAX77802_ALARM1_HOUR = 0xD1, + MAX77802_ALARM1_WEEKDAY = 0xD2, + MAX77802_ALARM1_MONTH = 0xD3, + MAX77802_ALARM1_YEAR = 0xD4, + MAX77802_ALARM1_DATE = 0xD5, + MAX77802_RTC_AE2 = 0xD6, + MAX77802_ALARM2_SEC = 0xD7, + MAX77802_ALARM2_MIN = 0xD8, + MAX77802_ALARM2_HOUR = 0xD9, + MAX77802_ALARM2_WEEKDAY = 0xDA, + MAX77802_ALARM2_MONTH = 0xDB, + MAX77802_ALARM2_YEAR = 0xDC, + MAX77802_ALARM2_DATE = 0xDD, + + MAX77802_RTC_END = 0xDF, +}; + +#define MAX77802_IRQSRC_PMIC (0) +#define MAX77802_IRQSRC_RTC BIT(0) + +enum max77802_irq_source { + PMIC_INT1 = 0, + PMIC_INT2, + RTC_INT, + + MAX77802_IRQ_GROUP_NR, +}; + +enum max77802_irq { + MAX77802_PMICIRQ_PWRONF, + MAX77802_PMICIRQ_PWRONR, + MAX77802_PMICIRQ_JIGONBF, + MAX77802_PMICIRQ_JIGONBR, + MAX77802_PMICIRQ_ACOKBF, + MAX77802_PMICIRQ_ACOKBR, + MAX77802_PMICIRQ_ONKEY1S, + MAX77802_PMICIRQ_MRSTB, + + MAX77802_PMICIRQ_140C, + MAX77802_PMICIRQ_120C, + + MAX77802_RTCIRQ_RTC60S = 0, + MAX77802_RTCIRQ_RTCA1, + MAX77802_RTCIRQ_RTCA2, + MAX77802_RTCIRQ_SMPL, + MAX77802_RTCIRQ_RTC1S, + MAX77802_RTCIRQ_WTSR, +}; + +#define MAX77802_INT1_PWRONF_MSK BIT(0) +#define MAX77802_INT1_PWRONR_MSK BIT(1) +#define MAX77802_INT1_JIGONBF_MSK BIT(2) +#define MAX77802_INT1_JIGONBR_MSK BIT(3) +#define MAX77802_INT1_ACOKBF_MSK BIT(4) +#define MAX77802_INT1_ACOKBR_MSK BIT(5) +#define MAX77802_INT1_ONKEY1S_MSK BIT(6) +#define MAX77802_INT1_MRSTB_MSK BIT(7) + +#define MAX77802_INT2_140C_MSK BIT(0) +#define MAX77802_INT2_120C_MSK BIT(1) + +#define MAX77802_RTCINT_RTC60S_MSK BIT(0) +#define MAX77802_RTCINT_RTCA1_MSK BIT(1) +#define MAX77802_RTCINT_RTCA2_MSK BIT(2) +#define MAX77802_RTCINT_SMPL_MSK BIT(3) +#define MAX77802_RTCINT_RTC1S_MSK BIT(4) +#define MAX77802_RTCINT_WTSR_MSK BIT(5) + +struct max77802_dev { + struct device *dev; + struct i2c_client *i2c; /* 0x09 / PMIC, Battery Control and RTC */ + + int type; + + struct regmap *regmap; /* regmap for mfd and rtc devices */ + struct regmap_irq_chip_data *irq_data; + struct regmap_irq_chip_data *rtc_irq_data; + + int irq; + bool wakeup; + struct mutex irqlock; + int irq_masks_cur[MAX77802_IRQ_GROUP_NR]; + int irq_masks_cache[MAX77802_IRQ_GROUP_NR]; +}; + +enum max77802_types { + TYPE_MAX77802, +}; + +extern int max77802_irq_init(struct max77802_dev *max77802); +extern void max77802_irq_exit(struct max77802_dev *max77802); +extern int max77802_irq_resume(struct max77802_dev *max77802); + +#endif /* __LINUX_MFD_MAX77802_PRIV_H */ diff --git a/include/linux/mfd/max77802.h b/include/linux/mfd/max77802.h new file mode 100644 index 0000000..45e5943 --- /dev/null +++ b/include/linux/mfd/max77802.h @@ -0,0 +1,121 @@ +/* + * max77802.h - Driver for the Maxim 77802 + * + * Copyright (c) 2013-2014 Google, Inc + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This driver is based on max8997.h + * + * MAX77802 has PMIC, RTC devices. + * The devices share the same I2C bus and included in + * this mfd driver. + */ + +#ifndef __LINUX_MFD_MAX77802_H +#define __LINUX_MFD_MAX77802_H + +#include + +/* MAX77802 regulator IDs - LDOS must come before BUCKs */ +enum max77802_regulators { + MAX77802_BUCK1 = 0, + MAX77802_BUCK2, + MAX77802_BUCK3, + MAX77802_BUCK4, + MAX77802_BUCK5, + MAX77802_BUCK6, + MAX77802_BUCK7, + MAX77802_BUCK8, + MAX77802_BUCK9, + MAX77802_BUCK10, + MAX77802_LDO1, + MAX77802_LDO2, + MAX77802_LDO3, + MAX77802_LDO4, + MAX77802_LDO5, + MAX77802_LDO6, + MAX77802_LDO7, + MAX77802_LDO8, + MAX77802_LDO9, + MAX77802_LDO10, + MAX77802_LDO11, + MAX77802_LDO12, + MAX77802_LDO13, + MAX77802_LDO14, + MAX77802_LDO15, + MAX77802_LDO17, + MAX77802_LDO18, + MAX77802_LDO19, + MAX77802_LDO20, + MAX77802_LDO21, + MAX77802_LDO23, + MAX77802_LDO24, + MAX77802_LDO25, + MAX77802_LDO26, + MAX77802_LDO27, + MAX77802_LDO28, + MAX77802_LDO29, + MAX77802_LDO30, + MAX77802_LDO32, + MAX77802_LDO33, + MAX77802_LDO34, + MAX77802_LDO35, + + MAX77802_REG_MAX, +}; + +struct max77802_regulator_data { + int id; + int opmode; + struct regulator_init_data *initdata; + struct device_node *of_node; +}; + +enum max77802_opmode { + MAX77802_OPMODE_OFF, + MAX77802_OPMODE_STANDBY, + MAX77802_OPMODE_LP, + MAX77802_OPMODE_NORMAL, +}; + +struct max77802_opmode_data { + int id; + int mode; +}; + +struct max77802_platform_data { + /* IRQ */ + int irq_gpio; + int ono; + int wakeup; + + /* ---- PMIC ---- */ + struct max77802_regulator_data *regulators; + int num_regulators; + + struct max77802_opmode_data *opmode_data; + + /* + * GPIO-DVS feature is not fully enabled with the current version of + * MAX77802 driver, but the driver does support using a DVS index other + * than the default of 0. + */ + struct gpio_desc *buck_gpio_dvs[3]; /* GPIO of [0]DVS1, [1]DVS2, [2]DVS3 */ + int buck_default_idx; /* Default value of DVS1, 2, 3 */ + + struct gpio_desc *buck_gpio_selb[5]; /* 77802: 1, 2, 3, 4, 6 */ +}; + +#endif /* __LINUX_MFD_MAX77802_H */ -- 2.0.0.rc2 From mboxrd@z Thu Jan 1 00:00:00 1970 From: javier.martinez@collabora.co.uk (Javier Martinez Canillas) Date: Wed, 25 Jun 2014 21:03:31 +0200 Subject: [PATCH v4 07/14] mfd: Add driver for Maxim 77802 Power Management IC In-Reply-To: <1403723019-6212-1-git-send-email-javier.martinez@collabora.co.uk> References: <1403723019-6212-1-git-send-email-javier.martinez@collabora.co.uk> Message-ID: <1403723019-6212-8-git-send-email-javier.martinez@collabora.co.uk> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Maxim MAX77802 is a power management chip that contains 10 high efficiency Buck regulators, 32 Low-dropout (LDO) regulators used to power up application processors and peripherals, a 2-channel 32kHz clock outputs, a Real-Time-Clock (RTC) and a I2C interface to program the individual regulators, clocks outputs and the RTC. This patch adds the core support for MAX77802 PMIC and is based on a driver added by Simon Glass to the Chrome OS kernel 3.8 tree. Signed-off-by: Javier Martinez Canillas --- Changes since v3: - Remove unnecessary OOM error message since the mm subsystem already logs it. Changes since v2: - Split the DT binding docs in a separate patch and improve the documentation. Suggested by Mark Brown. - Add all the devices in the MFD driver instead of doing in separate patches. Suggested by Mark Brown. Changes since v1: - Convert max77{686,802} to regmap irq API and get rid of max77{686,802}-irq.c suggested by Krzysztof Kozlowski. - Don't protect max77802 mfd_cells using Kconfig options since mfd core omits devices that don't match. Suggested by Lee Jones. - Change mfd driver to be tristate instead of boolean. Suggested by Mark Brown. - Change binding "voltage-regulators" property to "regulators" to be consistent with other PMIC drivers. Suggested by Mark Brown. - Use regulators node names instead of the deprecated "regulator-compatible" property. Suggested by Mark Brown. - Use the new descriptor-based GPIO interface instead of the deprecated integer based GPIO one. Suggested by Mark Brown. - Remove the type parameter from i2c_device_id table since was not used. - Fix device not found error message and remove unneeded device found message. drivers/mfd/Kconfig | 14 ++ drivers/mfd/Makefile | 1 + drivers/mfd/max77802.c | 366 +++++++++++++++++++++++++++++++++++ include/linux/mfd/max77802-private.h | 307 +++++++++++++++++++++++++++++ include/linux/mfd/max77802.h | 121 ++++++++++++ 5 files changed, 809 insertions(+) create mode 100644 drivers/mfd/max77802.c create mode 100644 include/linux/mfd/max77802-private.h create mode 100644 include/linux/mfd/max77802.h diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index b53cc5e..51c0716 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -406,6 +406,20 @@ config MFD_MAX77693 additional drivers must be enabled in order to use the functionality of the device. +config MFD_MAX77802 + tristate "Maxim Integrated MAX77802 PMIC Support" + depends on I2C=y + select MFD_CORE + select REGMAP_I2C + select REGMAP_IRQ + select IRQ_DOMAIN + help + Say yes here to support for Maxim Integrated MAX77802. + This is a Power Management IC with RTC on chip. + This driver provides common support for accessing the device; + additional drivers must be enabled in order to use the functionality + of the device. + config MFD_MAX8907 tristate "Maxim Semiconductor MAX8907 PMIC Support" select MFD_CORE diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index f001487..e795bfe 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -117,6 +117,7 @@ obj-$(CONFIG_MFD_DA9063) += da9063.o obj-$(CONFIG_MFD_MAX14577) += max14577.o obj-$(CONFIG_MFD_MAX77686) += max77686.o obj-$(CONFIG_MFD_MAX77693) += max77693.o +obj-$(CONFIG_MFD_MAX77802) += max77802.o obj-$(CONFIG_MFD_MAX8907) += max8907.o max8925-objs := max8925-core.o max8925-i2c.o obj-$(CONFIG_MFD_MAX8925) += max8925.o diff --git a/drivers/mfd/max77802.c b/drivers/mfd/max77802.c new file mode 100644 index 0000000..3d477fb --- /dev/null +++ b/drivers/mfd/max77802.c @@ -0,0 +1,366 @@ +/* + * max77802.c - mfd core driver for the Maxim 77802 + * + * Copyright (C) 2013-2014 Google, Inc + * Simon Glass + * + * Copyright (C) 2012 Samsung Electronics + * Chiwoong Byun + * Jonghwa Lee + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This driver is based on max8997.c + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static const struct mfd_cell max77802_devs[] = { + { .name = "max77802-pmic", }, + { .name = "max77802-clk", }, + { .name = "max77802-rtc", }, +}; + +static bool max77802_pmic_is_accessible_reg(struct device *dev, + unsigned int reg) +{ + return (reg >= MAX77802_REG_DEVICE_ID && reg < MAX77802_REG_PMIC_END); +} + +static bool max77802_rtc_is_accessible_reg(struct device *dev, + unsigned int reg) +{ + return (reg >= MAX77802_RTC_INT && reg < MAX77802_RTC_END); +} + +static bool max77802_is_accessible_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_accessible_reg(dev, reg) || + max77802_rtc_is_accessible_reg(dev, reg)); +} + +static bool max77802_pmic_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (reg == MAX77802_REG_INTSRC || reg == MAX77802_REG_INT1 || + reg == MAX77802_REG_INT2); +} + +static bool max77802_rtc_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (reg == MAX77802_RTC_INT || + reg == MAX77802_RTC_UPDATE0 || + reg == MAX77802_RTC_UPDATE1); +} + +static bool max77802_is_precious_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_precious_reg(dev, reg) || + max77802_rtc_is_precious_reg(dev, reg)); +} + +static bool max77802_pmic_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_is_precious_reg(dev, reg) || + reg == MAX77802_REG_STATUS1 || reg == MAX77802_REG_STATUS2 || + reg == MAX77802_REG_PWRON); +} + +static bool max77802_rtc_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_rtc_is_precious_reg(dev, reg) || + reg == MAX77802_RTC_SEC || + reg == MAX77802_RTC_MIN || + reg == MAX77802_RTC_HOUR || + reg == MAX77802_RTC_WEEKDAY || + reg == MAX77802_RTC_MONTH || + reg == MAX77802_RTC_YEAR || + reg == MAX77802_RTC_DATE); +} + +static bool max77802_is_volatile_reg(struct device *dev, unsigned int reg) +{ + return (max77802_pmic_is_volatile_reg(dev, reg) || + max77802_rtc_is_volatile_reg(dev, reg)); +} + +static struct regmap_config max77802_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + .writeable_reg = max77802_is_accessible_reg, + .readable_reg = max77802_is_accessible_reg, + .precious_reg = max77802_is_precious_reg, + .volatile_reg = max77802_is_volatile_reg, + .name = "max77802-pmic", + .cache_type = REGCACHE_RBTREE, +}; + +static const struct regmap_irq max77802_irqs[] = { + /* INT1 interrupts */ + { .reg_offset = 0, .mask = MAX77802_INT1_PWRONF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_PWRONR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_JIGONBR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBF_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ACOKBR_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_ONKEY1S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_INT1_MRSTB_MSK, }, + /* INT2 interrupts */ + { .reg_offset = 1, .mask = MAX77802_INT2_140C_MSK, }, + { .reg_offset = 1, .mask = MAX77802_INT2_120C_MSK, }, +}; + +static const struct regmap_irq_chip max77802_irq_chip = { + .name = "max77802-pmic", + .status_base = MAX77802_REG_INT1, + .mask_base = MAX77802_REG_INT1MSK, + .num_regs = 2, + .irqs = max77802_irqs, + .num_irqs = ARRAY_SIZE(max77802_irqs), +}; + +static const struct regmap_irq max77802_rtc_irqs[] = { + /* RTC interrupts */ + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC60S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA1_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTCA2_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_SMPL_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_RTC1S_MSK, }, + { .reg_offset = 0, .mask = MAX77802_RTCINT_WTSR_MSK, }, +}; + +static const struct regmap_irq_chip max77802_rtc_irq_chip = { + .name = "max77802-rtc", + .status_base = MAX77802_RTC_INT, + .mask_base = MAX77802_RTC_INTM, + .num_regs = 1, + .irqs = max77802_rtc_irqs, + .num_irqs = ARRAY_SIZE(max77802_rtc_irqs), +}; + +#ifdef CONFIG_OF +static struct of_device_id max77802_pmic_dt_match[] = { + {.compatible = "maxim,max77802", .data = NULL}, + {}, +}; + +static void max77802_dt_parse_dvs_gpio(struct device *dev, + struct max77802_platform_data *pd, + struct device_node *np) +{ + int i; + + /* + * NOTE: we don't consider GPIO errors fatal; board may have some lines + * directly pulled high or low and thus doesn't specify them. + */ + for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_dvs); i++) + pd->buck_gpio_dvs[i] = + devm_gpiod_get_index(dev, "max77802,pmic-buck-dvs", i); + + for (i = 0; i < ARRAY_SIZE(pd->buck_gpio_selb); i++) + pd->buck_gpio_selb[i] = + devm_gpiod_get_index(dev, "max77802,pmic-buck-selb", i); +} + +static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device + *dev) +{ + struct device_node *np = dev->of_node; + struct max77802_platform_data *pd; + + pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL); + if (!pd) + return NULL; + + /* Read default index and ignore errors, since default is 0 */ + of_property_read_u32(np, "max77802,pmic-buck-default-dvs-idx", + &pd->buck_default_idx); + + max77802_dt_parse_dvs_gpio(dev, pd, np); + + dev->platform_data = pd; + return pd; +} +#else +static struct max77802_platform_data *max77802_i2c_parse_dt_pdata(struct device + *dev) +{ + return 0; +} +#endif + +static int max77802_i2c_probe(struct i2c_client *i2c, + const struct i2c_device_id *id) +{ + struct max77802_dev *max77802 = NULL; + struct max77802_platform_data *pdata = dev_get_platdata(&i2c->dev); + unsigned int data; + int ret = 0; + + if (i2c->dev.of_node) + pdata = max77802_i2c_parse_dt_pdata(&i2c->dev); + + if (!pdata) { + dev_err(&i2c->dev, "No platform data found.\n"); + return -EIO; + } + + max77802 = devm_kzalloc(&i2c->dev, sizeof(struct max77802_dev), + GFP_KERNEL); + if (max77802 == NULL) + return -ENOMEM; + + i2c_set_clientdata(i2c, max77802); + + max77802->dev = &i2c->dev; + max77802->i2c = i2c; + max77802->type = id->driver_data; + + max77802->wakeup = pdata->wakeup; + max77802->irq = i2c->irq; + + max77802->regmap = devm_regmap_init_i2c(i2c, &max77802_regmap_config); + if (IS_ERR(max77802->regmap)) { + ret = PTR_ERR(max77802->regmap); + dev_err(max77802->dev, "Failed to allocate register map: %d\n", + ret); + return ret; + } + + if (regmap_read(max77802->regmap, + MAX77802_REG_DEVICE_ID, &data) < 0) { + dev_err(max77802->dev, + "device not found on this channel\n"); + return -ENODEV; + } + + ret = regmap_add_irq_chip(max77802->regmap, max77802->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77802_irq_chip, + &max77802->irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add PMIC irq chip: %d\n", ret); + return ret; + } + ret = regmap_add_irq_chip(max77802->regmap, max77802->irq, + IRQF_TRIGGER_FALLING | IRQF_ONESHOT | + IRQF_SHARED, 0, &max77802_rtc_irq_chip, + &max77802->rtc_irq_data); + if (ret != 0) { + dev_err(&i2c->dev, "failed to add RTC irq chip: %d\n", ret); + goto err_del_irqc; + } + + ret = mfd_add_devices(max77802->dev, -1, max77802_devs, + ARRAY_SIZE(max77802_devs), NULL, 0, NULL); + if (ret < 0) { + dev_err(&i2c->dev, "failed to add MFD devices: %d\n", ret); + goto err_del_rtc_irqc; + } + + return 0; + +err_del_rtc_irqc: + regmap_del_irq_chip(max77802->irq, max77802->rtc_irq_data); +err_del_irqc: + regmap_del_irq_chip(max77802->irq, max77802->irq_data); + return ret; +} + +static int max77802_i2c_remove(struct i2c_client *i2c) +{ + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + mfd_remove_devices(max77802->dev); + + regmap_del_irq_chip(max77802->irq, max77802->rtc_irq_data); + regmap_del_irq_chip(max77802->irq, max77802->irq_data); + + return 0; +} + +static const struct i2c_device_id max77802_i2c_id[] = { + { "max77802", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, max77802_i2c_id); + +#ifdef CONFIG_PM_SLEEP +static int max77802_suspend(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + enable_irq_wake(max77802->irq); + + disable_irq(max77802->irq); + + return 0; +} + +static int max77802_resume(struct device *dev) +{ + struct i2c_client *i2c = container_of(dev, struct i2c_client, dev); + struct max77802_dev *max77802 = i2c_get_clientdata(i2c); + + if (device_may_wakeup(dev)) + disable_irq_wake(max77802->irq); + + enable_irq(max77802->irq); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(max77802_pm, max77802_suspend, max77802_resume); + +static struct i2c_driver max77802_i2c_driver = { + .driver = { + .name = "max77802", + .owner = THIS_MODULE, + .pm = &max77802_pm, + .of_match_table = of_match_ptr(max77802_pmic_dt_match), + }, + .probe = max77802_i2c_probe, + .remove = max77802_i2c_remove, + .id_table = max77802_i2c_id, +}; + +static int __init max77802_i2c_init(void) +{ + return i2c_add_driver(&max77802_i2c_driver); +} +/* init early so consumer devices can complete system boot */ +subsys_initcall(max77802_i2c_init); + +static void __exit max77802_i2c_exit(void) +{ + i2c_del_driver(&max77802_i2c_driver); +} +module_exit(max77802_i2c_exit); + +MODULE_DESCRIPTION("MAXIM 77802 multi-function core driver"); +MODULE_AUTHOR("Simon Glass "); +MODULE_LICENSE("GPL"); diff --git a/include/linux/mfd/max77802-private.h b/include/linux/mfd/max77802-private.h new file mode 100644 index 0000000..7539ab4 --- /dev/null +++ b/include/linux/mfd/max77802-private.h @@ -0,0 +1,307 @@ +/* + * max77802-private.h - Voltage regulator driver for the Maxim 77802 + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#ifndef __LINUX_MFD_MAX77802_PRIV_H +#define __LINUX_MFD_MAX77802_PRIV_H + +#include +#include +#include + +#define MAX77802_REG_INVALID (0xff) + +enum max77802_pmic_reg { + MAX77802_REG_DEVICE_ID = 0x00, + MAX77802_REG_INTSRC = 0x01, + MAX77802_REG_INT1 = 0x02, + MAX77802_REG_INT2 = 0x03, + + MAX77802_REG_INT1MSK = 0x04, + MAX77802_REG_INT2MSK = 0x05, + + MAX77802_REG_STATUS1 = 0x06, + MAX77802_REG_STATUS2 = 0x07, + + MAX77802_REG_PWRON = 0x08, + /* Reserved: 0x09 */ + MAX77802_REG_MRSTB = 0x0A, + MAX77802_REG_EPWRHOLD = 0x0B, + /* Reserved: 0x0C-0x0D */ + MAX77802_REG_BOOSTCTRL = 0x0E, + MAX77802_REG_BOOSTOUT = 0x0F, + + MAX77802_REG_BUCK1CTRL = 0x10, + MAX77802_REG_BUCK1DVS1 = 0x11, + MAX77802_REG_BUCK1DVS2 = 0x12, + MAX77802_REG_BUCK1DVS3 = 0x13, + MAX77802_REG_BUCK1DVS4 = 0x14, + MAX77802_REG_BUCK1DVS5 = 0x15, + MAX77802_REG_BUCK1DVS6 = 0x16, + MAX77802_REG_BUCK1DVS7 = 0x17, + MAX77802_REG_BUCK1DVS8 = 0x18, + /* Reserved: 0x19 */ + MAX77802_REG_BUCK2CTRL1 = 0x1A, + MAX77802_REG_BUCK2CTRL2 = 0x1B, + MAX77802_REG_BUCK2PHTRAN = 0x1C, + MAX77802_REG_BUCK2DVS1 = 0x1D, + MAX77802_REG_BUCK2DVS2 = 0x1E, + MAX77802_REG_BUCK2DVS3 = 0x1F, + MAX77802_REG_BUCK2DVS4 = 0x20, + MAX77802_REG_BUCK2DVS5 = 0x21, + MAX77802_REG_BUCK2DVS6 = 0x22, + MAX77802_REG_BUCK2DVS7 = 0x23, + MAX77802_REG_BUCK2DVS8 = 0x24, + /* Reserved: 0x25-0x26 */ + MAX77802_REG_BUCK3CTRL1 = 0x27, + MAX77802_REG_BUCK3DVS1 = 0x28, + MAX77802_REG_BUCK3DVS2 = 0x29, + MAX77802_REG_BUCK3DVS3 = 0x2A, + MAX77802_REG_BUCK3DVS4 = 0x2B, + MAX77802_REG_BUCK3DVS5 = 0x2C, + MAX77802_REG_BUCK3DVS6 = 0x2D, + MAX77802_REG_BUCK3DVS7 = 0x2E, + MAX77802_REG_BUCK3DVS8 = 0x2F, + /* Reserved: 0x30-0x36 */ + MAX77802_REG_BUCK4CTRL1 = 0x37, + MAX77802_REG_BUCK4DVS1 = 0x38, + MAX77802_REG_BUCK4DVS2 = 0x39, + MAX77802_REG_BUCK4DVS3 = 0x3A, + MAX77802_REG_BUCK4DVS4 = 0x3B, + MAX77802_REG_BUCK4DVS5 = 0x3C, + MAX77802_REG_BUCK4DVS6 = 0x3D, + MAX77802_REG_BUCK4DVS7 = 0x3E, + MAX77802_REG_BUCK4DVS8 = 0x3F, + /* Reserved: 0x40 */ + MAX77802_REG_BUCK5CTRL = 0x41, + MAX77802_REG_BUCK5OUT = 0x42, + /* Reserved: 0x43 */ + MAX77802_REG_BUCK6CTRL = 0x44, + MAX77802_REG_BUCK6DVS1 = 0x45, + MAX77802_REG_BUCK6DVS2 = 0x46, + MAX77802_REG_BUCK6DVS3 = 0x47, + MAX77802_REG_BUCK6DVS4 = 0x48, + MAX77802_REG_BUCK6DVS5 = 0x49, + MAX77802_REG_BUCK6DVS6 = 0x4A, + MAX77802_REG_BUCK6DVS7 = 0x4B, + MAX77802_REG_BUCK6DVS8 = 0x4C, + /* Reserved: 0x4D */ + MAX77802_REG_BUCK7CTRL = 0x4E, + MAX77802_REG_BUCK7OUT = 0x4F, + /* Reserved: 0x50 */ + MAX77802_REG_BUCK8CTRL = 0x51, + MAX77802_REG_BUCK8OUT = 0x52, + /* Reserved: 0x53 */ + MAX77802_REG_BUCK9CTRL = 0x54, + MAX77802_REG_BUCK9OUT = 0x55, + /* Reserved: 0x56 */ + MAX77802_REG_BUCK10CTRL = 0x57, + MAX77802_REG_BUCK10OUT = 0x58, + + /* Reserved: 0x59-0x5F */ + + MAX77802_REG_LDO1CTRL1 = 0x60, + MAX77802_REG_LDO2CTRL1 = 0x61, + MAX77802_REG_LDO3CTRL1 = 0x62, + MAX77802_REG_LDO4CTRL1 = 0x63, + MAX77802_REG_LDO5CTRL1 = 0x64, + MAX77802_REG_LDO6CTRL1 = 0x65, + MAX77802_REG_LDO7CTRL1 = 0x66, + MAX77802_REG_LDO8CTRL1 = 0x67, + MAX77802_REG_LDO9CTRL1 = 0x68, + MAX77802_REG_LDO10CTRL1 = 0x69, + MAX77802_REG_LDO11CTRL1 = 0x6A, + MAX77802_REG_LDO12CTRL1 = 0x6B, + MAX77802_REG_LDO13CTRL1 = 0x6C, + MAX77802_REG_LDO14CTRL1 = 0x6D, + MAX77802_REG_LDO15CTRL1 = 0x6E, + /* Reserved: 0x6F */ + MAX77802_REG_LDO17CTRL1 = 0x70, + MAX77802_REG_LDO18CTRL1 = 0x71, + MAX77802_REG_LDO19CTRL1 = 0x72, + MAX77802_REG_LDO20CTRL1 = 0x73, + MAX77802_REG_LDO21CTRL1 = 0x74, + MAX77802_REG_LDO22CTRL1 = 0x75, + MAX77802_REG_LDO23CTRL1 = 0x76, + MAX77802_REG_LDO24CTRL1 = 0x77, + MAX77802_REG_LDO25CTRL1 = 0x78, + MAX77802_REG_LDO26CTRL1 = 0x79, + MAX77802_REG_LDO27CTRL1 = 0x7A, + MAX77802_REG_LDO28CTRL1 = 0x7B, + MAX77802_REG_LDO29CTRL1 = 0x7C, + MAX77802_REG_LDO30CTRL1 = 0x7D, + /* Reserved: 0x7E */ + MAX77802_REG_LDO32CTRL1 = 0x7F, + MAX77802_REG_LDO33CTRL1 = 0x80, + MAX77802_REG_LDO34CTRL1 = 0x81, + MAX77802_REG_LDO35CTRL1 = 0x82, + /* Reserved: 0x83-0x8F */ + MAX77802_REG_LDO1CTRL2 = 0x90, + MAX77802_REG_LDO2CTRL2 = 0x91, + MAX77802_REG_LDO3CTRL2 = 0x92, + MAX77802_REG_LDO4CTRL2 = 0x93, + MAX77802_REG_LDO5CTRL2 = 0x94, + MAX77802_REG_LDO6CTRL2 = 0x95, + MAX77802_REG_LDO7CTRL2 = 0x96, + MAX77802_REG_LDO8CTRL2 = 0x97, + MAX77802_REG_LDO9CTRL2 = 0x98, + MAX77802_REG_LDO10CTRL2 = 0x99, + MAX77802_REG_LDO11CTRL2 = 0x9A, + MAX77802_REG_LDO12CTRL2 = 0x9B, + MAX77802_REG_LDO13CTRL2 = 0x9C, + MAX77802_REG_LDO14CTRL2 = 0x9D, + MAX77802_REG_LDO15CTRL2 = 0x9E, + /* Reserved: 0x9F */ + MAX77802_REG_LDO17CTRL2 = 0xA0, + MAX77802_REG_LDO18CTRL2 = 0xA1, + MAX77802_REG_LDO19CTRL2 = 0xA2, + MAX77802_REG_LDO20CTRL2 = 0xA3, + MAX77802_REG_LDO21CTRL2 = 0xA4, + MAX77802_REG_LDO22CTRL2 = 0xA5, + MAX77802_REG_LDO23CTRL2 = 0xA6, + MAX77802_REG_LDO24CTRL2 = 0xA7, + MAX77802_REG_LDO25CTRL2 = 0xA8, + MAX77802_REG_LDO26CTRL2 = 0xA9, + MAX77802_REG_LDO27CTRL2 = 0xAA, + MAX77802_REG_LDO28CTRL2 = 0xAB, + MAX77802_REG_LDO29CTRL2 = 0xAC, + MAX77802_REG_LDO30CTRL2 = 0xAD, + /* Reserved: 0xAE */ + MAX77802_REG_LDO32CTRL2 = 0xAF, + MAX77802_REG_LDO33CTRL2 = 0xB0, + MAX77802_REG_LDO34CTRL2 = 0xB1, + MAX77802_REG_LDO35CTRL2 = 0xB2, + /* Reserved: 0xB3 */ + + MAX77802_REG_BBAT_CHG = 0xB4, + MAX77802_REG_32KHZ = 0xB5, + + MAX77802_REG_PMIC_END = 0xB6, +}; + +enum max77802_rtc_reg { + MAX77802_RTC_INT = 0xC0, + MAX77802_RTC_INTM = 0xC1, + MAX77802_RTC_CONTROLM = 0xC2, + MAX77802_RTC_CONTROL = 0xC3, + MAX77802_RTC_UPDATE0 = 0xC4, + MAX77802_RTC_UPDATE1 = 0xC5, + MAX77802_WTSR_SMPL_CNTL = 0xC6, + MAX77802_RTC_SEC = 0xC7, + MAX77802_RTC_MIN = 0xC8, + MAX77802_RTC_HOUR = 0xC9, + MAX77802_RTC_WEEKDAY = 0xCA, + MAX77802_RTC_MONTH = 0xCB, + MAX77802_RTC_YEAR = 0xCC, + MAX77802_RTC_DATE = 0xCD, + MAX77802_RTC_AE1 = 0xCE, + MAX77802_ALARM1_SEC = 0xCF, + MAX77802_ALARM1_MIN = 0xD0, + MAX77802_ALARM1_HOUR = 0xD1, + MAX77802_ALARM1_WEEKDAY = 0xD2, + MAX77802_ALARM1_MONTH = 0xD3, + MAX77802_ALARM1_YEAR = 0xD4, + MAX77802_ALARM1_DATE = 0xD5, + MAX77802_RTC_AE2 = 0xD6, + MAX77802_ALARM2_SEC = 0xD7, + MAX77802_ALARM2_MIN = 0xD8, + MAX77802_ALARM2_HOUR = 0xD9, + MAX77802_ALARM2_WEEKDAY = 0xDA, + MAX77802_ALARM2_MONTH = 0xDB, + MAX77802_ALARM2_YEAR = 0xDC, + MAX77802_ALARM2_DATE = 0xDD, + + MAX77802_RTC_END = 0xDF, +}; + +#define MAX77802_IRQSRC_PMIC (0) +#define MAX77802_IRQSRC_RTC BIT(0) + +enum max77802_irq_source { + PMIC_INT1 = 0, + PMIC_INT2, + RTC_INT, + + MAX77802_IRQ_GROUP_NR, +}; + +enum max77802_irq { + MAX77802_PMICIRQ_PWRONF, + MAX77802_PMICIRQ_PWRONR, + MAX77802_PMICIRQ_JIGONBF, + MAX77802_PMICIRQ_JIGONBR, + MAX77802_PMICIRQ_ACOKBF, + MAX77802_PMICIRQ_ACOKBR, + MAX77802_PMICIRQ_ONKEY1S, + MAX77802_PMICIRQ_MRSTB, + + MAX77802_PMICIRQ_140C, + MAX77802_PMICIRQ_120C, + + MAX77802_RTCIRQ_RTC60S = 0, + MAX77802_RTCIRQ_RTCA1, + MAX77802_RTCIRQ_RTCA2, + MAX77802_RTCIRQ_SMPL, + MAX77802_RTCIRQ_RTC1S, + MAX77802_RTCIRQ_WTSR, +}; + +#define MAX77802_INT1_PWRONF_MSK BIT(0) +#define MAX77802_INT1_PWRONR_MSK BIT(1) +#define MAX77802_INT1_JIGONBF_MSK BIT(2) +#define MAX77802_INT1_JIGONBR_MSK BIT(3) +#define MAX77802_INT1_ACOKBF_MSK BIT(4) +#define MAX77802_INT1_ACOKBR_MSK BIT(5) +#define MAX77802_INT1_ONKEY1S_MSK BIT(6) +#define MAX77802_INT1_MRSTB_MSK BIT(7) + +#define MAX77802_INT2_140C_MSK BIT(0) +#define MAX77802_INT2_120C_MSK BIT(1) + +#define MAX77802_RTCINT_RTC60S_MSK BIT(0) +#define MAX77802_RTCINT_RTCA1_MSK BIT(1) +#define MAX77802_RTCINT_RTCA2_MSK BIT(2) +#define MAX77802_RTCINT_SMPL_MSK BIT(3) +#define MAX77802_RTCINT_RTC1S_MSK BIT(4) +#define MAX77802_RTCINT_WTSR_MSK BIT(5) + +struct max77802_dev { + struct device *dev; + struct i2c_client *i2c; /* 0x09 / PMIC, Battery Control and RTC */ + + int type; + + struct regmap *regmap; /* regmap for mfd and rtc devices */ + struct regmap_irq_chip_data *irq_data; + struct regmap_irq_chip_data *rtc_irq_data; + + int irq; + bool wakeup; + struct mutex irqlock; + int irq_masks_cur[MAX77802_IRQ_GROUP_NR]; + int irq_masks_cache[MAX77802_IRQ_GROUP_NR]; +}; + +enum max77802_types { + TYPE_MAX77802, +}; + +extern int max77802_irq_init(struct max77802_dev *max77802); +extern void max77802_irq_exit(struct max77802_dev *max77802); +extern int max77802_irq_resume(struct max77802_dev *max77802); + +#endif /* __LINUX_MFD_MAX77802_PRIV_H */ diff --git a/include/linux/mfd/max77802.h b/include/linux/mfd/max77802.h new file mode 100644 index 0000000..45e5943 --- /dev/null +++ b/include/linux/mfd/max77802.h @@ -0,0 +1,121 @@ +/* + * max77802.h - Driver for the Maxim 77802 + * + * Copyright (c) 2013-2014 Google, Inc + * + * Copyright (C) 2012 Samsung Electrnoics + * Chiwoong Byun + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * This driver is based on max8997.h + * + * MAX77802 has PMIC, RTC devices. + * The devices share the same I2C bus and included in + * this mfd driver. + */ + +#ifndef __LINUX_MFD_MAX77802_H +#define __LINUX_MFD_MAX77802_H + +#include + +/* MAX77802 regulator IDs - LDOS must come before BUCKs */ +enum max77802_regulators { + MAX77802_BUCK1 = 0, + MAX77802_BUCK2, + MAX77802_BUCK3, + MAX77802_BUCK4, + MAX77802_BUCK5, + MAX77802_BUCK6, + MAX77802_BUCK7, + MAX77802_BUCK8, + MAX77802_BUCK9, + MAX77802_BUCK10, + MAX77802_LDO1, + MAX77802_LDO2, + MAX77802_LDO3, + MAX77802_LDO4, + MAX77802_LDO5, + MAX77802_LDO6, + MAX77802_LDO7, + MAX77802_LDO8, + MAX77802_LDO9, + MAX77802_LDO10, + MAX77802_LDO11, + MAX77802_LDO12, + MAX77802_LDO13, + MAX77802_LDO14, + MAX77802_LDO15, + MAX77802_LDO17, + MAX77802_LDO18, + MAX77802_LDO19, + MAX77802_LDO20, + MAX77802_LDO21, + MAX77802_LDO23, + MAX77802_LDO24, + MAX77802_LDO25, + MAX77802_LDO26, + MAX77802_LDO27, + MAX77802_LDO28, + MAX77802_LDO29, + MAX77802_LDO30, + MAX77802_LDO32, + MAX77802_LDO33, + MAX77802_LDO34, + MAX77802_LDO35, + + MAX77802_REG_MAX, +}; + +struct max77802_regulator_data { + int id; + int opmode; + struct regulator_init_data *initdata; + struct device_node *of_node; +}; + +enum max77802_opmode { + MAX77802_OPMODE_OFF, + MAX77802_OPMODE_STANDBY, + MAX77802_OPMODE_LP, + MAX77802_OPMODE_NORMAL, +}; + +struct max77802_opmode_data { + int id; + int mode; +}; + +struct max77802_platform_data { + /* IRQ */ + int irq_gpio; + int ono; + int wakeup; + + /* ---- PMIC ---- */ + struct max77802_regulator_data *regulators; + int num_regulators; + + struct max77802_opmode_data *opmode_data; + + /* + * GPIO-DVS feature is not fully enabled with the current version of + * MAX77802 driver, but the driver does support using a DVS index other + * than the default of 0. + */ + struct gpio_desc *buck_gpio_dvs[3]; /* GPIO of [0]DVS1, [1]DVS2, [2]DVS3 */ + int buck_default_idx; /* Default value of DVS1, 2, 3 */ + + struct gpio_desc *buck_gpio_selb[5]; /* 77802: 1, 2, 3, 4, 6 */ +}; + +#endif /* __LINUX_MFD_MAX77802_H */ -- 2.0.0.rc2