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path: root/drivers/mtd/maps/autcpu12-nvram.c
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Diffstat (limited to 'drivers/mtd/maps/autcpu12-nvram.c')
-rw-r--r--drivers/mtd/maps/autcpu12-nvram.c129
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");