2011-12-23 12:28:08 +04:00
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/*
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2012-07-11 16:06:55 +04:00
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* sec-core.c
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2011-12-23 12:28:08 +04:00
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*
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2012-07-11 16:06:55 +04:00
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* Copyright (c) 2012 Samsung Electronics Co., Ltd
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2011-12-23 12:28:08 +04:00
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* http://www.samsung.com
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/i2c.h>
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2013-10-16 12:56:52 +04:00
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#include <linux/of.h>
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2013-02-04 03:49:47 +04:00
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#include <linux/of_irq.h>
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2011-12-23 12:28:08 +04:00
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#include <linux/interrupt.h>
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#include <linux/pm_runtime.h>
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#include <linux/mutex.h>
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#include <linux/mfd/core.h>
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2012-07-11 16:07:16 +04:00
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#include <linux/mfd/samsung/core.h>
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#include <linux/mfd/samsung/irq.h>
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#include <linux/mfd/samsung/rtc.h>
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2013-07-02 02:02:19 +04:00
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#include <linux/mfd/samsung/s2mps11.h>
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#include <linux/mfd/samsung/s5m8763.h>
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#include <linux/mfd/samsung/s5m8767.h>
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2011-12-23 12:28:08 +04:00
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#include <linux/regmap.h>
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2013-11-18 17:33:06 +04:00
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static const struct mfd_cell s5m8751_devs[] = {
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2012-01-20 11:09:12 +04:00
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{
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.name = "s5m8751-pmic",
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}, {
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.name = "s5m-charger",
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}, {
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.name = "s5m8751-codec",
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},
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};
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2013-11-18 17:33:06 +04:00
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static const struct mfd_cell s5m8763_devs[] = {
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2012-01-20 11:09:12 +04:00
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{
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.name = "s5m8763-pmic",
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}, {
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.name = "s5m-rtc",
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}, {
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.name = "s5m-charger",
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},
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};
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2013-11-18 17:33:06 +04:00
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static const struct mfd_cell s5m8767_devs[] = {
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2011-12-23 12:28:08 +04:00
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{
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.name = "s5m8767-pmic",
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}, {
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.name = "s5m-rtc",
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2013-12-26 14:19:00 +04:00
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}, {
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.name = "s5m8767-clk",
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}
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2011-12-23 12:28:08 +04:00
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};
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2013-11-18 17:33:06 +04:00
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static const struct mfd_cell s2mps11_devs[] = {
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2012-07-11 16:07:55 +04:00
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{
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.name = "s2mps11-pmic",
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2013-07-07 15:44:21 +04:00
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}, {
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.name = "s2mps11-clk",
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}
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2012-07-11 16:07:55 +04:00
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};
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2013-02-04 03:49:47 +04:00
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#ifdef CONFIG_OF
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static struct of_device_id sec_dt_match[] = {
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{ .compatible = "samsung,s5m8767-pmic",
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.data = (void *)S5M8767X,
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},
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2013-06-29 16:51:20 +04:00
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{ .compatible = "samsung,s2mps11-pmic",
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.data = (void *)S2MPS11X,
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},
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2013-02-04 03:49:47 +04:00
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{},
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};
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#endif
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2013-07-02 21:51:16 +04:00
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static bool s2mps11_volatile(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case S2MPS11_REG_INT1M:
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case S2MPS11_REG_INT2M:
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case S2MPS11_REG_INT3M:
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return false;
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default:
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return true;
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}
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}
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static bool s5m8763_volatile(struct device *dev, unsigned int reg)
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{
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switch (reg) {
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case S5M8763_REG_IRQM1:
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case S5M8763_REG_IRQM2:
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case S5M8763_REG_IRQM3:
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case S5M8763_REG_IRQM4:
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return false;
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default:
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return true;
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}
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}
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2013-11-28 12:09:43 +04:00
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static const struct regmap_config sec_regmap_config = {
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2011-12-23 12:28:08 +04:00
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.reg_bits = 8,
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.val_bits = 8,
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};
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2013-11-28 12:09:43 +04:00
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static const struct regmap_config s2mps11_regmap_config = {
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2013-07-02 02:02:19 +04:00
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = S2MPS11_REG_L38CTRL,
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2013-07-02 21:51:16 +04:00
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.volatile_reg = s2mps11_volatile,
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.cache_type = REGCACHE_FLAT,
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2013-07-02 02:02:19 +04:00
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};
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2013-11-28 12:09:43 +04:00
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static const struct regmap_config s5m8763_regmap_config = {
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2013-07-02 02:02:19 +04:00
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = S5M8763_REG_LBCNFG2,
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2013-07-02 21:51:16 +04:00
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.volatile_reg = s5m8763_volatile,
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.cache_type = REGCACHE_FLAT,
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2013-07-02 02:02:19 +04:00
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};
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2013-11-28 12:09:43 +04:00
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static const struct regmap_config s5m8767_regmap_config = {
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2013-07-02 02:02:19 +04:00
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.reg_bits = 8,
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.val_bits = 8,
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.max_register = S5M8767_REG_LDO28CTRL,
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2013-07-02 21:51:16 +04:00
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.volatile_reg = s2mps11_volatile,
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.cache_type = REGCACHE_FLAT,
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2013-07-02 02:02:19 +04:00
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};
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2013-02-04 03:49:47 +04:00
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2013-12-13 05:12:31 +04:00
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static const struct regmap_config sec_rtc_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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2013-02-04 03:49:47 +04:00
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#ifdef CONFIG_OF
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/*
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* Only the common platform data elements for s5m8767 are parsed here from the
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* device tree. Other sub-modules of s5m8767 such as pmic, rtc , charger and
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* others have to parse their own platform data elements from device tree.
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*
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* The s5m8767 platform data structure is instantiated here and the drivers for
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* the sub-modules need not instantiate another instance while parsing their
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* platform data.
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*/
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static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
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struct device *dev)
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{
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struct sec_platform_data *pd;
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pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
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if (!pd) {
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dev_err(dev, "could not allocate memory for pdata\n");
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return ERR_PTR(-ENOMEM);
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}
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/*
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* ToDo: the 'wakeup' member in the platform data is more of a linux
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* specfic information. Hence, there is no binding for that yet and
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* not parsed here.
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*/
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return pd;
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}
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#else
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2013-02-04 22:31:25 +04:00
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static struct sec_platform_data *sec_pmic_i2c_parse_dt_pdata(
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2013-02-04 03:49:47 +04:00
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struct device *dev)
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{
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2013-12-07 10:02:15 +04:00
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return NULL;
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2013-02-04 03:49:47 +04:00
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}
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#endif
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static inline int sec_i2c_get_driver_data(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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#ifdef CONFIG_OF
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if (i2c->dev.of_node) {
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const struct of_device_id *match;
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match = of_match_node(sec_dt_match, i2c->dev.of_node);
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return (int)match->data;
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}
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#endif
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return (int)id->driver_data;
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}
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2012-07-11 16:06:55 +04:00
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static int sec_pmic_probe(struct i2c_client *i2c,
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2011-12-23 12:28:08 +04:00
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const struct i2c_device_id *id)
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{
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2013-07-30 12:10:05 +04:00
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struct sec_platform_data *pdata = dev_get_platdata(&i2c->dev);
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2013-07-02 02:02:19 +04:00
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const struct regmap_config *regmap;
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2012-07-11 16:06:55 +04:00
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struct sec_pmic_dev *sec_pmic;
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2012-02-28 10:23:55 +04:00
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int ret;
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2011-12-23 12:28:08 +04:00
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2012-07-11 16:06:55 +04:00
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sec_pmic = devm_kzalloc(&i2c->dev, sizeof(struct sec_pmic_dev),
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2012-01-20 11:09:11 +04:00
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GFP_KERNEL);
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2012-07-11 16:06:55 +04:00
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if (sec_pmic == NULL)
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2011-12-23 12:28:08 +04:00
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return -ENOMEM;
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2012-07-11 16:06:55 +04:00
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i2c_set_clientdata(i2c, sec_pmic);
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sec_pmic->dev = &i2c->dev;
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sec_pmic->i2c = i2c;
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sec_pmic->irq = i2c->irq;
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2013-02-04 03:49:47 +04:00
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sec_pmic->type = sec_i2c_get_driver_data(i2c, id);
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if (sec_pmic->dev->of_node) {
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pdata = sec_pmic_i2c_parse_dt_pdata(sec_pmic->dev);
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if (IS_ERR(pdata)) {
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ret = PTR_ERR(pdata);
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return ret;
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}
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pdata->device_type = sec_pmic->type;
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}
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2011-12-23 12:28:08 +04:00
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if (pdata) {
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2012-07-11 16:06:55 +04:00
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sec_pmic->device_type = pdata->device_type;
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sec_pmic->ono = pdata->ono;
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sec_pmic->irq_base = pdata->irq_base;
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sec_pmic->wakeup = pdata->wakeup;
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2013-02-04 03:49:47 +04:00
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sec_pmic->pdata = pdata;
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2011-12-23 12:28:08 +04:00
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}
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2013-07-02 02:02:19 +04:00
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switch (sec_pmic->device_type) {
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case S2MPS11X:
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regmap = &s2mps11_regmap_config;
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break;
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case S5M8763X:
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regmap = &s5m8763_regmap_config;
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break;
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case S5M8767X:
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regmap = &s5m8767_regmap_config;
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break;
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default:
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regmap = &sec_regmap_config;
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break;
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}
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2013-12-13 05:12:31 +04:00
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sec_pmic->regmap_pmic = devm_regmap_init_i2c(i2c, regmap);
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if (IS_ERR(sec_pmic->regmap_pmic)) {
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ret = PTR_ERR(sec_pmic->regmap_pmic);
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2011-12-23 12:28:08 +04:00
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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2012-02-28 10:23:55 +04:00
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ret);
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2012-04-25 06:03:44 +04:00
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return ret;
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2011-12-23 12:28:08 +04:00
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}
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2012-07-11 16:06:55 +04:00
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sec_pmic->rtc = i2c_new_dummy(i2c->adapter, RTC_I2C_ADDR);
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i2c_set_clientdata(sec_pmic->rtc, sec_pmic);
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2011-12-23 12:28:08 +04:00
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2013-12-13 05:12:31 +04:00
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sec_pmic->regmap_rtc = devm_regmap_init_i2c(sec_pmic->rtc,
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&sec_rtc_regmap_config);
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if (IS_ERR(sec_pmic->regmap_rtc)) {
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ret = PTR_ERR(sec_pmic->regmap_rtc);
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dev_err(&i2c->dev, "Failed to allocate RTC register map: %d\n",
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ret);
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return ret;
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}
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2012-01-16 04:08:42 +04:00
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if (pdata && pdata->cfg_pmic_irq)
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2011-12-23 12:28:08 +04:00
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pdata->cfg_pmic_irq();
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2012-07-11 16:06:55 +04:00
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sec_irq_init(sec_pmic);
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2011-12-23 12:28:08 +04:00
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2012-07-11 16:06:55 +04:00
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pm_runtime_set_active(sec_pmic->dev);
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2011-12-23 12:28:08 +04:00
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2012-07-11 16:06:55 +04:00
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switch (sec_pmic->device_type) {
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2012-01-20 11:09:12 +04:00
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case S5M8751X:
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2012-07-11 16:06:55 +04:00
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ret = mfd_add_devices(sec_pmic->dev, -1, s5m8751_devs,
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2012-09-11 11:16:36 +04:00
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ARRAY_SIZE(s5m8751_devs), NULL, 0, NULL);
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2012-01-20 11:09:12 +04:00
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break;
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case S5M8763X:
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2012-07-11 16:06:55 +04:00
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ret = mfd_add_devices(sec_pmic->dev, -1, s5m8763_devs,
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2012-09-11 11:16:36 +04:00
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ARRAY_SIZE(s5m8763_devs), NULL, 0, NULL);
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2012-01-20 11:09:12 +04:00
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break;
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case S5M8767X:
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2012-07-11 16:06:55 +04:00
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ret = mfd_add_devices(sec_pmic->dev, -1, s5m8767_devs,
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2012-09-11 11:16:36 +04:00
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ARRAY_SIZE(s5m8767_devs), NULL, 0, NULL);
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2012-01-20 11:09:12 +04:00
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break;
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2012-07-11 16:07:55 +04:00
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case S2MPS11X:
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ret = mfd_add_devices(sec_pmic->dev, -1, s2mps11_devs,
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2012-09-11 11:16:36 +04:00
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ARRAY_SIZE(s2mps11_devs), NULL, 0, NULL);
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2012-07-11 16:07:55 +04:00
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break;
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2012-01-20 11:09:12 +04:00
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default:
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/* If this happens the probe function is problem */
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BUG();
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}
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2011-12-23 12:28:08 +04:00
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2013-05-15 19:00:48 +04:00
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if (ret)
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2011-12-23 12:28:08 +04:00
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goto err;
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2013-11-26 17:50:27 +04:00
|
|
|
device_init_wakeup(sec_pmic->dev, sec_pmic->wakeup);
|
|
|
|
|
2011-12-23 12:28:08 +04:00
|
|
|
return ret;
|
|
|
|
|
|
|
|
err:
|
2012-07-11 16:06:55 +04:00
|
|
|
sec_irq_exit(sec_pmic);
|
|
|
|
i2c_unregister_device(sec_pmic->rtc);
|
2011-12-23 12:28:08 +04:00
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
static int sec_pmic_remove(struct i2c_client *i2c)
|
2011-12-23 12:28:08 +04:00
|
|
|
{
|
2012-07-11 16:06:55 +04:00
|
|
|
struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
|
2011-12-23 12:28:08 +04:00
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
mfd_remove_devices(sec_pmic->dev);
|
|
|
|
sec_irq_exit(sec_pmic);
|
|
|
|
i2c_unregister_device(sec_pmic->rtc);
|
2011-12-23 12:28:08 +04:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-01-26 14:38:43 +04:00
|
|
|
#ifdef CONFIG_PM_SLEEP
|
2013-11-26 17:50:27 +04:00
|
|
|
static int sec_pmic_suspend(struct device *dev)
|
|
|
|
{
|
|
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
|
|
struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
|
|
|
|
|
|
|
|
if (device_may_wakeup(dev)) {
|
|
|
|
enable_irq_wake(sec_pmic->irq);
|
|
|
|
/*
|
|
|
|
* PMIC IRQ must be disabled during suspend for RTC alarm
|
|
|
|
* to work properly.
|
|
|
|
* When device is woken up from suspend by RTC Alarm, an
|
|
|
|
* interrupt occurs before resuming I2C bus controller.
|
|
|
|
* The interrupt is handled by regmap_irq_thread which tries
|
|
|
|
* to read RTC registers. This read fails (I2C is still
|
|
|
|
* suspended) and RTC Alarm interrupt is disabled.
|
|
|
|
*/
|
|
|
|
disable_irq(sec_pmic->irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int sec_pmic_resume(struct device *dev)
|
|
|
|
{
|
|
|
|
struct i2c_client *i2c = container_of(dev, struct i2c_client, dev);
|
|
|
|
struct sec_pmic_dev *sec_pmic = i2c_get_clientdata(i2c);
|
|
|
|
|
|
|
|
if (device_may_wakeup(dev)) {
|
|
|
|
disable_irq_wake(sec_pmic->irq);
|
|
|
|
enable_irq(sec_pmic->irq);
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
2014-01-26 14:38:43 +04:00
|
|
|
#endif /* CONFIG_PM_SLEEP */
|
2013-11-26 17:50:27 +04:00
|
|
|
|
|
|
|
static SIMPLE_DEV_PM_OPS(sec_pmic_pm_ops, sec_pmic_suspend, sec_pmic_resume);
|
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
static const struct i2c_device_id sec_pmic_id[] = {
|
|
|
|
{ "sec_pmic", 0 },
|
2011-12-23 12:28:08 +04:00
|
|
|
{ }
|
|
|
|
};
|
2012-07-11 16:06:55 +04:00
|
|
|
MODULE_DEVICE_TABLE(i2c, sec_pmic_id);
|
2011-12-23 12:28:08 +04:00
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
static struct i2c_driver sec_pmic_driver = {
|
2011-12-23 12:28:08 +04:00
|
|
|
.driver = {
|
2012-07-11 16:06:55 +04:00
|
|
|
.name = "sec_pmic",
|
2011-12-23 12:28:08 +04:00
|
|
|
.owner = THIS_MODULE,
|
2013-11-26 17:50:27 +04:00
|
|
|
.pm = &sec_pmic_pm_ops,
|
2013-02-04 03:49:47 +04:00
|
|
|
.of_match_table = of_match_ptr(sec_dt_match),
|
2011-12-23 12:28:08 +04:00
|
|
|
},
|
2012-07-11 16:06:55 +04:00
|
|
|
.probe = sec_pmic_probe,
|
|
|
|
.remove = sec_pmic_remove,
|
|
|
|
.id_table = sec_pmic_id,
|
2011-12-23 12:28:08 +04:00
|
|
|
};
|
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
static int __init sec_pmic_init(void)
|
2011-12-23 12:28:08 +04:00
|
|
|
{
|
2012-07-11 16:06:55 +04:00
|
|
|
return i2c_add_driver(&sec_pmic_driver);
|
2011-12-23 12:28:08 +04:00
|
|
|
}
|
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
subsys_initcall(sec_pmic_init);
|
2011-12-23 12:28:08 +04:00
|
|
|
|
2012-07-11 16:06:55 +04:00
|
|
|
static void __exit sec_pmic_exit(void)
|
2011-12-23 12:28:08 +04:00
|
|
|
{
|
2012-07-11 16:06:55 +04:00
|
|
|
i2c_del_driver(&sec_pmic_driver);
|
2011-12-23 12:28:08 +04:00
|
|
|
}
|
2012-07-11 16:06:55 +04:00
|
|
|
module_exit(sec_pmic_exit);
|
2011-12-23 12:28:08 +04:00
|
|
|
|
|
|
|
MODULE_AUTHOR("Sangbeom Kim <sbkim73@samsung.com>");
|
|
|
|
MODULE_DESCRIPTION("Core support for the S5M MFD");
|
|
|
|
MODULE_LICENSE("GPL");
|