diff options
Diffstat (limited to 'drivers/mtd/devices/mtdram.c')
| -rw-r--r-- | drivers/mtd/devices/mtdram.c | 50 |
1 files changed, 24 insertions, 26 deletions
diff --git a/drivers/mtd/devices/mtdram.c b/drivers/mtd/devices/mtdram.c index 9cc8194b5d..33c221e3a1 100644 --- a/drivers/mtd/devices/mtdram.c +++ b/drivers/mtd/devices/mtdram.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * Author: Sebastian Block <basti@linux-source.de> * Copyright (c) 2014 @@ -5,11 +6,6 @@ * Some parts are based on mtdram.c found in Linux kernel * by Alexander Larsson <alex@cendio.se> * and Joern Engel <joern@wh.fh-wedel.de>. - * - * This code 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 <common.h> #include <environment.h> @@ -20,11 +16,6 @@ #include <malloc.h> #include <of.h> -struct mtdram_priv_data { - struct mtd_info mtd; - void *base; -}; - static int ram_erase(struct mtd_info *mtd, struct erase_info *instr) { memset((char *)mtd->priv + instr->addr, 0xff, instr->len); @@ -45,28 +36,29 @@ static int ram_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retle return 0; } -static int mtdram_probe(struct device_d *dev) +static int mtdram_probe(struct device *dev) { + long type; struct resource *iores; - void __iomem *base; int device_id; struct mtd_info *mtd; - struct resource *res; loff_t size; int ret = 0; mtd = xzalloc(sizeof(struct mtd_info)); device_id = DEVICE_ID_SINGLE; - if (dev->device_node) { - const char *alias = of_alias_get(dev->device_node); + if (dev->of_node) { + const char *alias = of_alias_get(dev->of_node); if (alias) mtd->name = xstrdup(alias); } + type = (long)device_get_match_data(dev); + if (!mtd->name) { device_id = DEVICE_ID_DYNAMIC; - mtd->name = "mtdram"; + mtd->name = type == MTD_RAM ? "mtdram" : "mtdrom"; } iores = dev_request_mem_resource(dev, 0); @@ -74,22 +66,23 @@ static int mtdram_probe(struct device_d *dev) ret = PTR_ERR(iores); goto nobase; } - base = IOMEM(iores->start); - res = dev_get_resource(dev, IORESOURCE_MEM, 0); - size = (unsigned long) resource_size(res); - mtd->priv = base; + mtd->priv = IOMEM(iores->start); + size = (unsigned long) resource_size(iores); - mtd->type = MTD_RAM; + mtd->type = type; mtd->writesize = 1; mtd->writebufsize = 64; - mtd->flags = MTD_CAP_RAM; mtd->size = size; mtd->_read = ram_read; - mtd->_write = ram_write; - mtd->_erase = ram_erase; - mtd->erasesize = 1; + + if (type == MTD_RAM) { + mtd->flags = MTD_CAP_RAM; + mtd->_write = ram_write; + mtd->_erase = ram_erase; + mtd->erasesize = 1; + } mtd->dev.parent = dev; @@ -105,12 +98,17 @@ nobase: static __maybe_unused struct of_device_id mtdram_dt_ids[] = { { .compatible = "mtd-ram", + .data = (void *)MTD_RAM + }, { + .compatible = "mtd-rom", + .data = (void *)MTD_ROM }, { /* sentinel */ } }; +MODULE_DEVICE_TABLE(of, mtdram_dt_ids); -static struct driver_d mtdram_driver = { +static struct driver mtdram_driver = { .name = "mtdram", .probe = mtdram_probe, .of_compatible = DRV_OF_COMPAT(mtdram_dt_ids), |