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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * BCM47XX NAND flash driver4 *5 * Copyright (C) 2012 Rafał Miłecki <zajec5@gmail.com>6 */7 8#include "bcm47xxnflash.h"9 10#include <linux/module.h>11#include <linux/kernel.h>12#include <linux/slab.h>13#include <linux/platform_device.h>14#include <linux/bcma/bcma.h>15 16MODULE_DESCRIPTION("NAND flash driver for BCMA bus");17MODULE_LICENSE("GPL");18MODULE_AUTHOR("Rafał Miłecki");19 20static const char *probes[] = { "bcm47xxpart", NULL };21 22static int bcm47xxnflash_probe(struct platform_device *pdev)23{24 struct bcma_nflash *nflash = dev_get_platdata(&pdev->dev);25 struct bcm47xxnflash *b47n;26 struct mtd_info *mtd;27 int err = 0;28 29 b47n = devm_kzalloc(&pdev->dev, sizeof(*b47n), GFP_KERNEL);30 if (!b47n)31 return -ENOMEM;32 33 nand_set_controller_data(&b47n->nand_chip, b47n);34 mtd = nand_to_mtd(&b47n->nand_chip);35 mtd->dev.parent = &pdev->dev;36 b47n->cc = container_of(nflash, struct bcma_drv_cc, nflash);37 38 if (b47n->cc->core->bus->chipinfo.id == BCMA_CHIP_ID_BCM4706) {39 err = bcm47xxnflash_ops_bcm4706_init(b47n);40 } else {41 pr_err("Device not supported\n");42 err = -ENOTSUPP;43 }44 if (err) {45 pr_err("Initialization failed: %d\n", err);46 return err;47 }48 49 platform_set_drvdata(pdev, b47n);50 51 err = mtd_device_parse_register(mtd, probes, NULL, NULL, 0);52 if (err) {53 pr_err("Failed to register MTD device: %d\n", err);54 return err;55 }56 57 return 0;58}59 60static void bcm47xxnflash_remove(struct platform_device *pdev)61{62 struct bcm47xxnflash *nflash = platform_get_drvdata(pdev);63 struct nand_chip *chip = &nflash->nand_chip;64 int ret;65 66 ret = mtd_device_unregister(nand_to_mtd(chip));67 WARN_ON(ret);68 nand_cleanup(chip);69}70 71static struct platform_driver bcm47xxnflash_driver = {72 .probe = bcm47xxnflash_probe,73 .remove_new = bcm47xxnflash_remove,74 .driver = {75 .name = "bcma_nflash",76 },77};78 79module_platform_driver(bcm47xxnflash_driver);80