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author | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
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committer | Srikant Patnaik | 2015-01-11 12:28:04 +0530 |
commit | 871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch) | |
tree | 8718f573808810c2a1e8cb8fb6ac469093ca2784 /drivers/mfd/ab8500-i2c.c | |
parent | 9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff) | |
download | FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.gz FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.tar.bz2 FOSSEE-netbook-kernel-source-871480933a1c28f8a9fed4c4d34d06c439a7a422.zip |
Moved, renamed, and deleted files
The original directory structure was scattered and unorganized.
Changes are basically to make it look like kernel structure.
Diffstat (limited to 'drivers/mfd/ab8500-i2c.c')
-rw-r--r-- | drivers/mfd/ab8500-i2c.c | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/drivers/mfd/ab8500-i2c.c b/drivers/mfd/ab8500-i2c.c new file mode 100644 index 00000000..b83045f1 --- /dev/null +++ b/drivers/mfd/ab8500-i2c.c @@ -0,0 +1,128 @@ +/* + * Copyright (C) ST-Ericsson SA 2010 + * Author: Mattias Wallin <mattias.wallin@stericsson.com> for ST-Ericsson. + * License Terms: GNU General Public License v2 + * This file was based on drivers/mfd/ab8500-spi.c + */ + +#include <linux/kernel.h> +#include <linux/slab.h> +#include <linux/init.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/mfd/abx500/ab8500.h> +#include <linux/mfd/dbx500-prcmu.h> + +static int ab8500_i2c_write(struct ab8500 *ab8500, u16 addr, u8 data) +{ + int ret; + + ret = prcmu_abb_write((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); + if (ret < 0) + dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); + return ret; +} + +static int ab8500_i2c_write_masked(struct ab8500 *ab8500, u16 addr, u8 mask, + u8 data) +{ + int ret; + + ret = prcmu_abb_write_masked((u8)(addr >> 8), (u8)(addr & 0xFF), &data, + &mask, 1); + if (ret < 0) + dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); + return ret; +} + +static int ab8500_i2c_read(struct ab8500 *ab8500, u16 addr) +{ + int ret; + u8 data; + + ret = prcmu_abb_read((u8)(addr >> 8), (u8)(addr & 0xFF), &data, 1); + if (ret < 0) { + dev_err(ab8500->dev, "prcmu i2c error %d\n", ret); + return ret; + } + return (int)data; +} + +static int __devinit ab8500_i2c_probe(struct platform_device *plf) +{ + const struct platform_device_id *platid = platform_get_device_id(plf); + struct ab8500 *ab8500; + struct resource *resource; + int ret; + + ab8500 = kzalloc(sizeof *ab8500, GFP_KERNEL); + if (!ab8500) + return -ENOMEM; + + ab8500->dev = &plf->dev; + + resource = platform_get_resource(plf, IORESOURCE_IRQ, 0); + if (!resource) { + kfree(ab8500); + return -ENODEV; + } + + ab8500->irq = resource->start; + + ab8500->read = ab8500_i2c_read; + ab8500->write = ab8500_i2c_write; + ab8500->write_masked = ab8500_i2c_write_masked; + + platform_set_drvdata(plf, ab8500); + + ret = ab8500_init(ab8500, platid->driver_data); + if (ret) + kfree(ab8500); + + + return ret; +} + +static int __devexit ab8500_i2c_remove(struct platform_device *plf) +{ + struct ab8500 *ab8500 = platform_get_drvdata(plf); + + ab8500_exit(ab8500); + kfree(ab8500); + + return 0; +} + +static const struct platform_device_id ab8500_id[] = { + { "ab8500-i2c", AB8500_VERSION_AB8500 }, + { "ab8505-i2c", AB8500_VERSION_AB8505 }, + { "ab9540-i2c", AB8500_VERSION_AB9540 }, + { "ab8540-i2c", AB8500_VERSION_AB8540 }, + { } +}; + +static struct platform_driver ab8500_i2c_driver = { + .driver = { + .name = "ab8500-i2c", + .owner = THIS_MODULE, + }, + .probe = ab8500_i2c_probe, + .remove = __devexit_p(ab8500_i2c_remove), + .id_table = ab8500_id, +}; + +static int __init ab8500_i2c_init(void) +{ + return platform_driver_register(&ab8500_i2c_driver); +} + +static void __exit ab8500_i2c_exit(void) +{ + platform_driver_unregister(&ab8500_i2c_driver); +} +arch_initcall(ab8500_i2c_init); +module_exit(ab8500_i2c_exit); + +MODULE_AUTHOR("Mattias WALLIN <mattias.wallin@stericsson.com"); +MODULE_DESCRIPTION("AB8500 Core access via PRCMU I2C"); +MODULE_LICENSE("GPL v2"); |