diff options
Diffstat (limited to 'drivers/mtd/nand/plat_nand.c')
| -rw-r--r-- | drivers/mtd/nand/plat_nand.c | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/drivers/mtd/nand/plat_nand.c b/drivers/mtd/nand/plat_nand.c deleted file mode 100644 index c004566a9ad2..000000000000 --- a/drivers/mtd/nand/plat_nand.c +++ /dev/null @@ -1,176 +0,0 @@ -/* - * Generic NAND driver - * - * Author: Vitaly Wool <vitalywool@gmail.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - */ - -#include <linux/io.h> -#include <linux/module.h> -#include <linux/platform_device.h> -#include <linux/slab.h> -#include <linux/mtd/mtd.h> -#include <linux/mtd/nand.h> -#include <linux/mtd/partitions.h> - -struct plat_nand_data { - struct nand_chip chip; - struct mtd_info mtd; - void __iomem *io_base; -}; - -static const char *part_probe_types[] = { "cmdlinepart", NULL }; - -/* - * Probe for the NAND device. - */ -static int plat_nand_probe(struct platform_device *pdev) -{ - struct platform_nand_data *pdata = pdev->dev.platform_data; - struct mtd_part_parser_data ppdata; - struct plat_nand_data *data; - struct resource *res; - const char **part_types; - int err = 0; - - if (!pdata) { - dev_err(&pdev->dev, "platform_nand_data is missing\n"); - return -EINVAL; - } - - if (pdata->chip.nr_chips < 1) { - dev_err(&pdev->dev, "invalid number of chips specified\n"); - return -EINVAL; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENXIO; - - /* Allocate memory for the device structure (and zero it) */ - data = kzalloc(sizeof(struct plat_nand_data), GFP_KERNEL); - if (!data) { - dev_err(&pdev->dev, "failed to allocate device structure.\n"); - return -ENOMEM; - } - - if (!request_mem_region(res->start, resource_size(res), - dev_name(&pdev->dev))) { - dev_err(&pdev->dev, "request_mem_region failed\n"); - err = -EBUSY; - goto out_free; - } - - data->io_base = ioremap(res->start, resource_size(res)); - if (data->io_base == NULL) { - dev_err(&pdev->dev, "ioremap failed\n"); - err = -EIO; - goto out_release_io; - } - - data->chip.priv = &data; - data->mtd.priv = &data->chip; - data->mtd.owner = THIS_MODULE; - data->mtd.name = dev_name(&pdev->dev); - - data->chip.IO_ADDR_R = data->io_base; - data->chip.IO_ADDR_W = data->io_base; - data->chip.cmd_ctrl = pdata->ctrl.cmd_ctrl; - data->chip.dev_ready = pdata->ctrl.dev_ready; - data->chip.select_chip = pdata->ctrl.select_chip; - data->chip.write_buf = pdata->ctrl.write_buf; - data->chip.read_buf = pdata->ctrl.read_buf; - data->chip.read_byte = pdata->ctrl.read_byte; - data->chip.chip_delay = pdata->chip.chip_delay; - data->chip.options |= pdata->chip.options; - data->chip.bbt_options |= pdata->chip.bbt_options; - - data->chip.ecc.hwctl = pdata->ctrl.hwcontrol; - data->chip.ecc.layout = pdata->chip.ecclayout; - data->chip.ecc.mode = NAND_ECC_SOFT; - - platform_set_drvdata(pdev, data); - - /* Handle any platform specific setup */ - if (pdata->ctrl.probe) { - err = pdata->ctrl.probe(pdev); - if (err) - goto out; - } - - /* Scan to find existence of the device */ - if (nand_scan(&data->mtd, pdata->chip.nr_chips)) { - err = -ENXIO; - goto out; - } - - part_types = pdata->chip.part_probe_types ? : part_probe_types; - - ppdata.of_node = pdev->dev.of_node; - err = mtd_device_parse_register(&data->mtd, part_types, &ppdata, - pdata->chip.partitions, - pdata->chip.nr_partitions); - - if (!err) - return err; - - nand_release(&data->mtd); -out: - if (pdata->ctrl.remove) - pdata->ctrl.remove(pdev); - platform_set_drvdata(pdev, NULL); - iounmap(data->io_base); -out_release_io: - release_mem_region(res->start, resource_size(res)); -out_free: - kfree(data); - return err; -} - -/* - * Remove a NAND device. - */ -static int plat_nand_remove(struct platform_device *pdev) -{ - struct plat_nand_data *data = platform_get_drvdata(pdev); - struct platform_nand_data *pdata = pdev->dev.platform_data; - struct resource *res; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - - nand_release(&data->mtd); - if (pdata->ctrl.remove) - pdata->ctrl.remove(pdev); - iounmap(data->io_base); - release_mem_region(res->start, resource_size(res)); - kfree(data); - - return 0; -} - -static const struct of_device_id plat_nand_match[] = { - { .compatible = "gen_nand" }, - {}, -}; -MODULE_DEVICE_TABLE(of, plat_nand_match); - -static struct platform_driver plat_nand_driver = { - .probe = plat_nand_probe, - .remove = plat_nand_remove, - .driver = { - .name = "gen_nand", - .owner = THIS_MODULE, - .of_match_table = plat_nand_match, - }, -}; - -module_platform_driver(plat_nand_driver); - -MODULE_LICENSE("GPL"); -MODULE_AUTHOR("Vitaly Wool"); -MODULE_DESCRIPTION("Simple generic NAND driver"); -MODULE_ALIAS("platform:gen_nand"); |