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Linux/drivers/mtd/nand/bcm47xxnflash/main.c

  1 /*
  2  * BCM47XX NAND flash driver
  3  *
  4  * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>
  5  *
  6  * This program is free software; you can redistribute it and/or modify
  7  * it under the terms of the GNU General Public License version 2 as
  8  * published by the Free Software Foundation.
  9  *
 10  */
 11 
 12 #include "bcm47xxnflash.h"
 13 
 14 #include <linux/module.h>
 15 #include <linux/kernel.h>
 16 #include <linux/slab.h>
 17 #include <linux/platform_device.h>
 18 #include <linux/bcma/bcma.h>
 19 
 20 MODULE_DESCRIPTION("NAND flash driver for BCMA bus");
 21 MODULE_LICENSE("GPL");
 22 MODULE_AUTHOR("Rafał Miłecki");
 23 
 24 static const char *probes[] = { "bcm47xxpart", NULL };
 25 
 26 static int bcm47xxnflash_probe(struct platform_device *pdev)
 27 {
 28         struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);
 29         struct bcm47xxnflash *b47n;
 30         struct mtd_info *mtd;
 31         int err = 0;
 32 
 33         b47n = devm_kzalloc(&pdev->dev, sizeof(*b47n), GFP_KERNEL);
 34         if (!b47n)
 35                 return -ENOMEM;
 36 
 37         nand_set_controller_data(&b47n->nand_chip, b47n);
 38         mtd = nand_to_mtd(&b47n->nand_chip);
 39         mtd->dev.parent = &pdev->dev;
 40         b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);
 41 
 42         if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {
 43                 err = bcm47xxnflash_ops_bcm4706_init(b47n);
 44         } else {
 45                 pr_err("Device not supported\n");
 46                 err = -ENOTSUPP;
 47         }
 48         if (err) {
 49                 pr_err("Initialization failed: %d\n", err);
 50                 return err;
 51         }
 52 
 53         platform_set_drvdata(pdev, b47n);
 54 
 55         err = mtd_device_parse_register(mtd, probes, NULL, NULL, 0);
 56         if (err) {
 57                 pr_err("Failed to register MTD device: %d\n", err);
 58                 return err;
 59         }
 60 
 61         return 0;
 62 }
 63 
 64 static int bcm47xxnflash_remove(struct platform_device *pdev)
 65 {
 66         struct bcm47xxnflash *nflash = platform_get_drvdata(pdev);
 67 
 68         nand_release(nand_to_mtd(&nflash->nand_chip));
 69 
 70         return 0;
 71 }
 72 
 73 static struct platform_driver bcm47xxnflash_driver = {
 74         .probe  = bcm47xxnflash_probe,
 75         .remove = bcm47xxnflash_remove,
 76         .driver = {
 77                 .name = "bcma_nflash",
 78         },
 79 };
 80 
 81 module_platform_driver(bcm47xxnflash_driver);
 82 

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