diff options
Diffstat (limited to 'drivers/mtd/maps/autcpu12-nvram.c')
| -rw-r--r-- | drivers/mtd/maps/autcpu12-nvram.c | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/drivers/mtd/maps/autcpu12-nvram.c b/drivers/mtd/maps/autcpu12-nvram.c deleted file mode 100644 index c3525d2a2fa..00000000000 --- a/drivers/mtd/maps/autcpu12-nvram.c +++ /dev/null @@ -1,129 +0,0 @@ -/* - * NV-RAM memory access on autcpu12 - * (C) 2002 Thomas Gleixner (gleixner@autronix.de) - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - */ -#include <linux/err.h> -#include <linux/sizes.h> - -#include <linux/types.h> -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/module.h> -#include <linux/platform_device.h> - -#include <linux/mtd/mtd.h> -#include <linux/mtd/map.h> - -struct autcpu12_nvram_priv { - struct mtd_info *mtd; - struct map_info map; -}; - -static int autcpu12_nvram_probe(struct platform_device *pdev) -{ - map_word tmp, save0, save1; - struct resource *res; - struct autcpu12_nvram_priv *priv; - - priv = devm_kzalloc(&pdev->dev, - sizeof(struct autcpu12_nvram_priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - - platform_set_drvdata(pdev, priv); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "failed to get memory resource\n"); - return -ENOENT; - } - - priv->map.bankwidth = 4; - priv->map.phys = res->start; - priv->map.size = resource_size(res); - priv->map.virt = devm_ioremap_resource(&pdev->dev, res); - strcpy((char *)priv->map.name, res->name); - if (IS_ERR(priv->map.virt)) - return PTR_ERR(priv->map.virt); - - simple_map_init(&priv->map); - - /* - * Check for 32K/128K - * read ofs 0 - * read ofs 0x10000 - * Write complement to ofs 0x100000 - * Read and check result on ofs 0x0 - * Restore contents - */ - save0 = map_read(&priv->map, 0); - save1 = map_read(&priv->map, 0x10000); - tmp.x[0] = ~save0.x[0]; - map_write(&priv->map, tmp, 0x10000); - tmp = map_read(&priv->map, 0); - /* if we find this pattern on 0x0, we have 32K size */ - if (!map_word_equal(&priv->map, tmp, save0)) { - map_write(&priv->map, save0, 0x0); - priv->map.size = SZ_32K; - } else - map_write(&priv->map, save1, 0x10000); - - priv->mtd = do_map_probe("map_ram", &priv->map); - if (!priv->mtd) { - dev_err(&pdev->dev, "probing failed\n"); - return -ENXIO; - } - - priv->mtd->owner = THIS_MODULE; - priv->mtd->erasesize = 16; - priv->mtd->dev.parent = &pdev->dev; - if (!mtd_device_register(priv->mtd, NULL, 0)) { - dev_info(&pdev->dev, - "NV-RAM device size %ldKiB registered on AUTCPU12\n", - priv->map.size / SZ_1K); - return 0; - } - - map_destroy(priv->mtd); - dev_err(&pdev->dev, "NV-RAM device addition failed\n"); - return -ENOMEM; -} - -static int autcpu12_nvram_remove(struct platform_device *pdev) -{ - struct autcpu12_nvram_priv *priv = platform_get_drvdata(pdev); - - mtd_device_unregister(priv->mtd); - map_destroy(priv->mtd); - - return 0; -} - -static struct platform_driver autcpu12_nvram_driver = { - .driver = { - .name = "autcpu12_nvram", - .owner = THIS_MODULE, - }, - .probe = autcpu12_nvram_probe, - .remove = autcpu12_nvram_remove, -}; -module_platform_driver(autcpu12_nvram_driver); - -MODULE_AUTHOR("Thomas Gleixner"); -MODULE_DESCRIPTION("autcpu12 NVRAM map driver"); -MODULE_LICENSE("GPL"); |