forked from mirrors/linux
mfd: Remove confusing ab8500-i2c file and merge into ab8500-core
ab8500-i2c is used as core code to register the ab8500 device. After allocating ab8500 memory, it immediately calls into ab8500-core where the real initialisation takes place. This patch moves all core registration and memory allocation into the true ab8500-core file and removes ab8500-i2c completely. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lee Jones
Samuel Ortiz
parent
1cb3642a68
commit
d28f1db818
4 changed files with 103 additions and 169 deletions
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@ -205,7 +205,7 @@ static struct resource ab8500_resources[] = {
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};
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struct platform_device ab8500_device = {
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.name = "ab8500-i2c",
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.name = "ab8500-core",
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.id = 0,
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.dev = {
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.platform_data = &ab8500_platdata,
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@ -93,12 +93,11 @@ obj-$(CONFIG_AB3100_CORE) += ab3100-core.o
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obj-$(CONFIG_AB3100_OTP) += ab3100-otp.o
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obj-$(CONFIG_AB5500_CORE) += ab5500-core.o
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obj-$(CONFIG_AB5500_DEBUG) += ab5500-debugfs.o
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obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
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obj-$(CONFIG_AB8500_DEBUG) += ab8500-debugfs.o
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obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
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obj-$(CONFIG_MFD_DB8500_PRCMU) += db8500-prcmu.o
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# ab8500-i2c need to come after db8500-prcmu (which provides the channel)
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obj-$(CONFIG_AB8500_I2C_CORE) += ab8500-i2c.o
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# ab8500-core need to come after db8500-prcmu (which provides the channel)
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obj-$(CONFIG_AB8500_CORE) += ab8500-core.o ab8500-sysctrl.o
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obj-$(CONFIG_MFD_DB5500_PRCMU) += db5500-prcmu.o
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obj-$(CONFIG_MFD_TIMBERDALE) += timberdale.o
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obj-$(CONFIG_PMIC_ADP5520) += adp5520.o
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@ -18,6 +18,7 @@
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#include <linux/mfd/core.h>
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#include <linux/mfd/abx500.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/mfd/dbx500-prcmu.h>
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#include <linux/regulator/ab8500.h>
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/*
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@ -137,6 +138,41 @@ static const char ab8500_version_str[][7] = {
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[AB8500_VERSION_AB8540] = "AB8540",
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};
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static int ab8500_i2c_write(struct ab8500 *ab8500, u16 addr, u8 data)
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{
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int ret;
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ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
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if (ret < 0)
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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static int ab8500_i2c_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
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u8 data)
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{
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int ret;
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ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
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&mask, 1);
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if (ret < 0)
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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static int ab8500_i2c_read(struct ab8500 *ab8500, u16 addr)
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{
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int ret;
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u8 data;
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ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
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if (ret < 0) {
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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return (int)data;
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}
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static int ab8500_get_chip_id(struct device *dev)
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{
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struct ab8500 *ab8500;
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@ -1169,27 +1205,51 @@ static struct attribute_group ab9540_attr_group = {
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.attrs = ab9540_sysfs_entries,
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};
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int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
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static int __devinit ab8500_probe(struct platform_device *pdev)
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{
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struct ab8500_platform_data *plat = dev_get_platdata(ab8500->dev);
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struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
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const struct platform_device_id *platid = platform_get_device_id(pdev);
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enum ab8500_version version = platid->driver_data;
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struct ab8500 *ab8500;
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struct resource *resource;
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int ret;
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int i;
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u8 value;
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ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL);
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if (!ab8500)
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return -ENOMEM;
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if (plat)
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ab8500->irq_base = plat->irq_base;
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ab8500->dev = &pdev->dev;
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resource = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
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if (!resource) {
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ret = -ENODEV;
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goto out_free_ab8500;
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}
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ab8500->irq = resource->start;
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ab8500->read = ab8500_i2c_read;
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ab8500->write = ab8500_i2c_write;
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ab8500->write_masked = ab8500_i2c_write_masked;
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mutex_init(&ab8500->lock);
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mutex_init(&ab8500->irq_lock);
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atomic_set(&ab8500->transfer_ongoing, 0);
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platform_set_drvdata(pdev, ab8500);
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if (version != AB8500_VERSION_UNDEFINED)
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ab8500->version = version;
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else {
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ret = get_register_interruptible(ab8500, AB8500_MISC,
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AB8500_IC_NAME_REG, &value);
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if (ret < 0)
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return ret;
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goto out_free_ab8500;
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ab8500->version = value;
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}
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@ -1197,7 +1257,7 @@ int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
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ret = get_register_interruptible(ab8500, AB8500_MISC,
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AB8500_REV_REG, &value);
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if (ret < 0)
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return ret;
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goto out_free_ab8500;
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ab8500->chip_id = value;
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@ -1342,12 +1402,16 @@ int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
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kfree(ab8500->oldmask);
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out_freemask:
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kfree(ab8500->mask);
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out_free_ab8500:
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kfree(ab8500);
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return ret;
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}
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int __devexit ab8500_exit(struct ab8500 *ab8500)
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static int __devexit ab8500_remove(struct platform_device *pdev)
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{
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struct ab8500 *ab8500 = platform_get_drvdata(pdev);
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if (is_ab9540(ab8500))
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sysfs_remove_group(&ab8500->dev->kobj, &ab9540_attr_group);
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else
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@ -1359,10 +1423,41 @@ int __devexit ab8500_exit(struct ab8500 *ab8500)
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}
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kfree(ab8500->oldmask);
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kfree(ab8500->mask);
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kfree(ab8500);
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return 0;
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}
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static const struct platform_device_id ab8500_id[] = {
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{ "ab8500-core", AB8500_VERSION_AB8500 },
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{ "ab8505-i2c", AB8500_VERSION_AB8505 },
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{ "ab9540-i2c", AB8500_VERSION_AB9540 },
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{ "ab8540-i2c", AB8500_VERSION_AB8540 },
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{ }
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};
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static struct platform_driver ab8500_core_driver = {
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.driver = {
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.name = "ab8500-core",
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.owner = THIS_MODULE,
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},
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.probe = ab8500_probe,
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.remove = __devexit_p(ab8500_remove),
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.id_table = ab8500_id,
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};
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static int __init ab8500_core_init(void)
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{
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return platform_driver_register(&ab8500_core_driver);
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}
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static void __exit ab8500_core_exit(void)
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{
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platform_driver_unregister(&ab8500_core_driver);
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}
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arch_initcall(ab8500_core_init);
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module_exit(ab8500_core_exit);
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MODULE_AUTHOR("Mattias Wallin, Srinidhi Kasagar, Rabin Vincent");
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MODULE_DESCRIPTION("AB8500 MFD core");
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MODULE_LICENSE("GPL v2");
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@ -1,160 +0,0 @@
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/*
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* Copyright (C) ST-Ericsson SA 2010
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* Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson.
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* License Terms: GNU General Public License v2
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* This file was based on drivers/mfd/ab8500-spi.c
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*/
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/mfd/dbx500-prcmu.h>
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static int ab8500_i2c_write(struct ab8500 *ab8500, u16 addr, u8 data)
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{
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int ret;
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ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
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if (ret < 0)
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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static int ab8500_i2c_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask,
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u8 data)
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{
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int ret;
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ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data,
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&mask, 1);
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if (ret < 0)
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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static int ab8500_i2c_read(struct ab8500 *ab8500, u16 addr)
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{
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int ret;
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u8 data;
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ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1);
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if (ret < 0) {
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dev_err(ab8500->dev, "prcmu i2c error %d\n", ret);
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return ret;
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}
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return (int)data;
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}
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static int __devinit ab8500_i2c_probe(struct platform_device *plf)
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{
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const struct platform_device_id *platid = platform_get_device_id(plf);
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struct ab8500 *ab8500;
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struct resource *resource;
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int ret;
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ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL);
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if (!ab8500)
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return -ENOMEM;
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ab8500->dev = &plf->dev;
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resource = platform_get_resource(plf, IORESOURCE_IRQ, 0);
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if (!resource) {
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kfree(ab8500);
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return -ENODEV;
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}
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ab8500->irq = resource->start;
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ab8500->read = ab8500_i2c_read;
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ab8500->write = ab8500_i2c_write;
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ab8500->write_masked = ab8500_i2c_write_masked;
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platform_set_drvdata(plf, ab8500);
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ret = ab8500_init(ab8500, platid->driver_data);
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if (ret)
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kfree(ab8500);
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return ret;
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}
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static int __devexit ab8500_i2c_remove(struct platform_device *plf)
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{
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struct ab8500 *ab8500 = platform_get_drvdata(plf);
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ab8500_exit(ab8500);
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kfree(ab8500);
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return 0;
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}
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static const struct platform_device_id ab8500_id[] = {
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{ "ab8500-i2c", AB8500_VERSION_AB8500 },
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{ "ab8505-i2c", AB8500_VERSION_AB8505 },
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{ "ab9540-i2c", AB8500_VERSION_AB9540 },
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{ "ab8540-i2c", AB8500_VERSION_AB8540 },
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{ }
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};
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#ifdef CONFIG_PM
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static int ab8500_i2c_suspend(struct device *dev)
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{
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struct ab8500 *ab = dev_get_drvdata(dev);
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disable_irq(ab->irq);
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enable_irq_wake(ab->irq);
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return 0;
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}
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static int ab8500_i2c_resume(struct device *dev)
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{
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struct ab8500 *ab = dev_get_drvdata(dev);
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disable_irq_wake(ab->irq);
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enable_irq(ab->irq);
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return 0;
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}
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static const struct dev_pm_ops ab8500_i2c_pm_ops = {
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.suspend = ab8500_i2c_suspend,
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.resume = ab8500_i2c_resume,
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};
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#define AB8500_I2C_PM_OPS (&ab8500_i2c_pm_ops)
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#else
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#define AB8500_I2C_PM_OPS NULL
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#endif
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static struct platform_driver ab8500_i2c_driver = {
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.driver = {
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.name = "ab8500-i2c",
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.owner = THIS_MODULE,
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.pm = AB8500_I2C_PM_OPS,
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},
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.probe = ab8500_i2c_probe,
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.remove = __devexit_p(ab8500_i2c_remove),
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.id_table = ab8500_id,
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};
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static int __init ab8500_i2c_init(void)
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{
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return platform_driver_register(&ab8500_i2c_driver);
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}
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static void __exit ab8500_i2c_exit(void)
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{
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platform_driver_unregister(&ab8500_i2c_driver);
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}
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arch_initcall(ab8500_i2c_init);
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module_exit(ab8500_i2c_exit);
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MODULE_AUTHOR("Mattias WALLIN <mattias.wallin@stericsson.com");
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MODULE_DESCRIPTION("AB8500 Core access via PRCMU I2C");
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MODULE_LICENSE("GPL v2");
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