forked from Minki/linux
00940a2347
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
109 lines
2.4 KiB
C
109 lines
2.4 KiB
C
/*
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* BCM47XX NAND flash driver
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*
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* Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/bcma/bcma.h>
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#include "bcm47xxnflash.h"
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MODULE_DESCRIPTION("NAND flash driver for BCMA bus");
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Rafał Miłecki");
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static const char *probes[] = { "bcm47xxpart", NULL };
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static int bcm47xxnflash_probe(struct platform_device *pdev)
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{
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struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
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struct bcm47xxnflash *b47n;
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int err = 0;
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b47n = kzalloc(sizeof(*b47n), GFP_KERNEL);
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if (!b47n) {
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err = -ENOMEM;
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goto out;
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}
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b47n->nand_chip.priv = b47n;
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b47n->mtd.owner = THIS_MODULE;
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b47n->mtd.priv = &b47n->nand_chip; /* Required */
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b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);
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if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
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err = bcm47xxnflash_ops_bcm4706_init(b47n);
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} else {
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pr_err("Device not supported\n");
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err = -ENOTSUPP;
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}
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if (err) {
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pr_err("Initialization failed: %d\n", err);
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goto err_init;
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}
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err = mtd_device_parse_register(&b47n->mtd, probes, NULL, NULL, 0);
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if (err) {
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pr_err("Failed to register MTD device: %d\n", err);
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goto err_dev_reg;
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}
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return 0;
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err_dev_reg:
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err_init:
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kfree(b47n);
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out:
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return err;
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}
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static int __devexit bcm47xxnflash_remove(struct platform_device *pdev)
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{
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struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
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if (nflash->mtd)
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mtd_device_unregister(nflash->mtd);
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return 0;
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}
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static struct platform_driver bcm47xxnflash_driver = {
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.remove = __devexit_p(bcm47xxnflash_remove),
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.driver = {
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.name = "bcma_nflash",
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.owner = THIS_MODULE,
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},
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};
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static int __init bcm47xxnflash_init(void)
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{
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int err;
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/*
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* Platform device "bcma_nflash" exists on SoCs and is registered very
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* early, it won't be added during runtime (use platform_driver_probe).
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*/
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err = platform_driver_probe(&bcm47xxnflash_driver, bcm47xxnflash_probe);
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if (err)
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pr_err("Failed to register serial flash driver: %d\n", err);
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return err;
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}
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static void __exit bcm47xxnflash_exit(void)
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{
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platform_driver_unregister(&bcm47xxnflash_driver);
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}
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module_init(bcm47xxnflash_init);
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module_exit(bcm47xxnflash_exit);
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