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authorJohn Crispin <blogic@openwrt.org>2012-04-13 09:36:46 +0200
committerRalf Baechle <ralf@linux-mips.org>2012-05-21 14:31:55 +0100
commit02fa961fbf1c79783781cb8967b80ceaa8be4832 (patch)
tree4ed7bbcb5854ee1009d8ab3783768ba377d4c4b6 /drivers/mtd/maps
parentcdb8612147b7fba751e6fa193f32b09937a7e16b (diff)
downloadlinaro-lsk-02fa961fbf1c79783781cb8967b80ceaa8be4832.tar.gz
MTD: MIPS: lantiq: implement OF support
Adds bindings for OF and make use of module_platform_driver for lantiq based socs. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: linux-mtd@lists.infradead.org Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/3811/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'drivers/mtd/maps')
-rw-r--r--drivers/mtd/maps/lantiq-flash.c69
1 files changed, 25 insertions, 44 deletions
diff --git a/drivers/mtd/maps/lantiq-flash.c b/drivers/mtd/maps/lantiq-flash.c
index b5401e35574..aefa1112167 100644
--- a/drivers/mtd/maps/lantiq-flash.c
+++ b/drivers/mtd/maps/lantiq-flash.c
@@ -21,7 +21,6 @@
#include <linux/mtd/physmap.h>
#include <lantiq_soc.h>
-#include <lantiq_platform.h>
/*
* The NOR flash is connected to the same external bus unit (EBU) as PCI.
@@ -44,8 +43,9 @@ struct ltq_mtd {
struct map_info *map;
};
-static char ltq_map_name[] = "ltq_nor";
-static const char *ltq_probe_types[] __devinitconst = { "cmdlinepart", NULL };
+static const char ltq_map_name[] = "ltq_nor";
+static const char *ltq_probe_types[] __devinitconst = {
+ "cmdlinepart", "ofpart", NULL };
static map_word
ltq_read16(struct map_info *map, unsigned long adr)
@@ -108,12 +108,11 @@ ltq_copy_to(struct map_info *map, unsigned long to,
spin_unlock_irqrestore(&ebu_lock, flags);
}
-static int __init
+static int __devinit
ltq_mtd_probe(struct platform_device *pdev)
{
- struct physmap_flash_data *ltq_mtd_data = dev_get_platdata(&pdev->dev);
+ struct mtd_part_parser_data ppdata;
struct ltq_mtd *ltq_mtd;
- struct resource *res;
struct cfi_private *cfi;
int err;
@@ -122,28 +121,19 @@ ltq_mtd_probe(struct platform_device *pdev)
ltq_mtd->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!ltq_mtd->res) {
- dev_err(&pdev->dev, "failed to get memory resource");
+ dev_err(&pdev->dev, "failed to get memory resource\n");
err = -ENOENT;
goto err_out;
}
- res = devm_request_mem_region(&pdev->dev, ltq_mtd->res->start,
- resource_size(ltq_mtd->res), dev_name(&pdev->dev));
- if (!ltq_mtd->res) {
- dev_err(&pdev->dev, "failed to request mem resource");
- err = -EBUSY;
- goto err_out;
- }
-
ltq_mtd->map = kzalloc(sizeof(struct map_info), GFP_KERNEL);
- ltq_mtd->map->phys = res->start;
- ltq_mtd->map->size = resource_size(res);
- ltq_mtd->map->virt = devm_ioremap_nocache(&pdev->dev,
- ltq_mtd->map->phys, ltq_mtd->map->size);
+ ltq_mtd->map->phys = ltq_mtd->res->start;
+ ltq_mtd->map->size = resource_size(ltq_mtd->res);
+ ltq_mtd->map->virt = devm_request_and_ioremap(&pdev->dev, ltq_mtd->res);
if (!ltq_mtd->map->virt) {
- dev_err(&pdev->dev, "failed to ioremap!\n");
- err = -ENOMEM;
- goto err_free;
+ dev_err(&pdev->dev, "failed to remap mem resource\n");
+ err = -EBUSY;
+ goto err_out;
}
ltq_mtd->map->name = ltq_map_name;
@@ -169,9 +159,9 @@ ltq_mtd_probe(struct platform_device *pdev)
cfi->addr_unlock1 ^= 1;
cfi->addr_unlock2 ^= 1;
- err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types, NULL,
- ltq_mtd_data->parts,
- ltq_mtd_data->nr_parts);
+ ppdata.of_node = pdev->dev.of_node;
+ err = mtd_device_parse_register(ltq_mtd->mtd, ltq_probe_types,
+ &ppdata, NULL, 0);
if (err) {
dev_err(&pdev->dev, "failed to add partitions\n");
goto err_destroy;
@@ -204,32 +194,23 @@ ltq_mtd_remove(struct platform_device *pdev)
return 0;
}
+static const struct of_device_id ltq_mtd_match[] = {
+ { .compatible = "lantiq,nor" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, ltq_mtd_match);
+
static struct platform_driver ltq_mtd_driver = {
+ .probe = ltq_mtd_probe,
.remove = __devexit_p(ltq_mtd_remove),
.driver = {
- .name = "ltq_nor",
+ .name = "ltq-nor",
.owner = THIS_MODULE,
+ .of_match_table = ltq_mtd_match,
},
};
-static int __init
-init_ltq_mtd(void)
-{
- int ret = platform_driver_probe(&ltq_mtd_driver, ltq_mtd_probe);
-
- if (ret)
- pr_err("ltq_nor: error registering platform driver");
- return ret;
-}
-
-static void __exit
-exit_ltq_mtd(void)
-{
- platform_driver_unregister(&ltq_mtd_driver);
-}
-
-module_init(init_ltq_mtd);
-module_exit(exit_ltq_mtd);
+module_platform_driver(ltq_mtd_driver);
MODULE_LICENSE("GPL");
MODULE_AUTHOR("John Crispin <blogic@openwrt.org>");