turned ifxmips mtd driver into a platform device
authorJohn Crispin <john@openwrt.org>
Tue, 25 Dec 2007 13:26:41 +0000 (13:26 +0000)
committerJohn Crispin <john@openwrt.org>
Tue, 25 Dec 2007 13:26:41 +0000 (13:26 +0000)
SVN-Revision: 9926

target/linux/ifxmips/files/arch/mips/ifxmips/board.c
target/linux/ifxmips/files/drivers/mtd/maps/ifxmips.c
target/linux/ifxmips/files/include/asm-mips/ifxmips/ifxmips.h

index 05a0715..f048321 100644 (file)
@@ -71,6 +71,29 @@ static struct platform_device ifxmips_mii[] =
                .name = "ifxmips_mii0",
        },
 };
+       
+static struct physmap_flash_data ifxmips_mtd_data = {
+       .width    = 2,
+};
+
+static struct resource ifxmips_mtd_resource = {
+       .start  = IFXMIPS_FLASH_START,
+       .end    = IFXMIPS_FLASH_START + IFXMIPS_FLASH_MAX - 1,
+       .flags  = IORESOURCE_MEM,
+};
+
+static struct platform_device ifxmips_mtd[] =
+{
+       {
+               .id = 0,
+               .name = "ifxmips_mtd",
+               .dev = {
+                       .platform_data = &ifxmips_mtd_data,
+               },
+               .num_resources  = 1,
+               .resource   = &ifxmips_mtd_resource,
+       },
+};
 
 const char*
 get_system_type (void)
@@ -102,6 +125,7 @@ int __init ifxmips_init_devices(void)
        ifxmips_devs[dev++] = ifxmips_led;
        ifxmips_devs[dev++] = ifxmips_gpio;
        ifxmips_devs[dev++] = ifxmips_mii;
+       ifxmips_devs[dev++] = ifxmips_mtd;
 
        return platform_add_devices(ifxmips_devs, dev);
 }
index 06091ac..3dd41d1 100644 (file)
@@ -23,7 +23,6 @@
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <asm/io.h>
-
 #include <linux/init.h>
 #include <linux/mtd/mtd.h>
 #include <linux/mtd/map.h>
 #include <linux/mtd/cfi.h>
 #include <asm/ifxmips/ifxmips.h>
 #include <linux/magic.h>
+#include <linux/platform_device.h>
+
+#define DRVNAME                "ifxmips_mtd"
 
 static struct map_info
-danube_map = {
-       .name = "IFXMIPS_FLASH",
+ifxmips_map = {
+       .name = DRVNAME,
        .bankwidth = 2,
        .size = 0x400000,
 };
 
 static map_word
-danube_read16 (struct map_info * map, unsigned long adr)
+ifxmips_read16 (struct map_info * map, unsigned long adr)
 {
        map_word temp;
 
@@ -51,14 +53,14 @@ danube_read16 (struct map_info * map, unsigned long adr)
 }
 
 static void
-danube_write16 (struct map_info *map, map_word d, unsigned long adr)
+ifxmips_write16 (struct map_info *map, map_word d, unsigned long adr)
 {
        adr ^= 2;
        *((__u16 *) (map->virt + adr)) = d.x[0];
 }
 
 void
-danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
+ifxmips_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t len)
 {
        u8 *p;
        u8 *to_8;
@@ -72,7 +74,7 @@ danube_copy_from (struct map_info *map, void *to, unsigned long from, ssize_t le
 }
 
 void
-danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
+ifxmips_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_t len)
 {
        u8 *p =  (u8*) from;
        u8 *to_8;
@@ -85,7 +87,7 @@ danube_copy_to (struct map_info *map, unsigned long to, const void *from, ssize_
 }
 
 static struct mtd_partition
-danube_partitions[4] = {
+ifxmips_partitions[4] = {
        {
                name:"U-Boot",
                offset:0x00000000,
@@ -108,15 +110,12 @@ danube_partitions[4] = {
        },
 };
 
-#define IFXMIPS_FLASH_START            0x10000000
-#define IFXMIPS_FLASH_MAX              0x2000000
-
 int
 find_uImage_size (unsigned long start_offset){
        unsigned long temp;
 
-       danube_copy_from(&danube_map, &temp, start_offset + 12, 4);
-       printk("kernel size is %ld \n", temp + 0x40);
+       ifxmips_copy_from(&ifxmips_map, &temp, start_offset + 12, 4);
+       printk(KERN_INFO DRVNAME ": kernel size is %ld \n", temp + 0x40);
        return temp + 0x40;
 }
 
@@ -124,70 +123,90 @@ int
 detect_squashfs_partition (unsigned long start_offset){
        unsigned long temp;
 
-       danube_copy_from(&danube_map, &temp, start_offset, 4);
+       ifxmips_copy_from(&ifxmips_map, &temp, start_offset, 4);
 
        return (temp == SQUASHFS_MAGIC);
 }
 
-int __init
-init_danube_mtd (void)
+static int
+ifxmips_mtd_probe (void)
 {
-       struct mtd_info *danube_mtd = NULL;
+       struct mtd_info *ifxmips_mtd = NULL;
        struct mtd_partition *parts = NULL;
        unsigned long uimage_size;
 
        writel(0x1d7ff, IFXMIPS_EBU_BUSCON0);
 
-       danube_map.read = danube_read16;
-       danube_map.write = danube_write16;
-       danube_map.copy_from = danube_copy_from;
-       danube_map.copy_to = danube_copy_to;
+       ifxmips_map.read = ifxmips_read16;
+       ifxmips_map.write = ifxmips_write16;
+       ifxmips_map.copy_from = ifxmips_copy_from;
+       ifxmips_map.copy_to = ifxmips_copy_to;
 
-       danube_map.phys = IFXMIPS_FLASH_START;
-       danube_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
-       danube_map.size = IFXMIPS_FLASH_MAX;
-       if (!danube_map.virt) {
-               printk(KERN_WARNING "Failed to ioremap!\n");
+       ifxmips_map.phys = IFXMIPS_FLASH_START;
+       ifxmips_map.virt = ioremap_nocache(IFXMIPS_FLASH_START, IFXMIPS_FLASH_MAX);
+       ifxmips_map.size = IFXMIPS_FLASH_MAX;
+       if (!ifxmips_map.virt) {
+               printk(KERN_WARNING DRVNAME ": failed to ioremap!\n");
                return -EIO;
        }
 
-       danube_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &danube_map);
-       if (!danube_mtd) {
-               iounmap(danube_map.virt);
-               printk("probing failed\n");
+       ifxmips_mtd = (struct mtd_info *) do_map_probe("cfi_probe", &ifxmips_map);
+       if (!ifxmips_mtd) {
+               iounmap(ifxmips_map.virt);
+               printk(KERN_WARNING DRVNAME ": probing failed\n");
                return -ENXIO;
        }
 
-       danube_mtd->owner = THIS_MODULE;
+       ifxmips_mtd->owner = THIS_MODULE;
 
-       uimage_size = find_uImage_size(danube_partitions[2].offset);
+       uimage_size = find_uImage_size(ifxmips_partitions[2].offset);
 
-       if(detect_squashfs_partition(danube_partitions[2].offset + uimage_size)){
-               printk("Found a squashfs following the uImage\n");
+       if(detect_squashfs_partition(ifxmips_partitions[2].offset + uimage_size)){
+               printk(KERN_INFO DRVNAME ": found a squashfs following the uImage\n");
        } else {
                uimage_size &= ~0xffff;
                uimage_size += 0x10000;
        }
 
-       danube_partitions[2].size = uimage_size;
-       danube_partitions[3].offset = danube_partitions[2].offset + danube_partitions[2].size;
-       danube_partitions[3].size = ((danube_mtd->size >> 20) * 1024 * 1024) - danube_partitions[3].offset;
+       ifxmips_partitions[2].size = uimage_size;
+       ifxmips_partitions[3].offset = ifxmips_partitions[2].offset + ifxmips_partitions[2].size;
+       ifxmips_partitions[3].size = ((ifxmips_mtd->size >> 20) * 1024 * 1024) - ifxmips_partitions[3].offset;
 
-       parts = &danube_partitions[0];
-       add_mtd_partitions(danube_mtd, parts, 4);
+       parts = &ifxmips_partitions[0];
+       add_mtd_partitions(ifxmips_mtd, parts, 4);
 
-       printk("Added danube flash with %dMB\n", danube_mtd->size >> 20);
+       printk(KERN_INFO DRVNAME ": added ifxmips flash with %dMB\n", ifxmips_mtd->size >> 20);
        return 0;
 }
 
+static struct 
+platform_driver ifxmips_mtd_driver = { 
+       .probe = ifxmips_mtd_probe, 
+       .driver = { 
+               .name = DRVNAME, 
+               .owner = THIS_MODULE, 
+       }, 
+}; 
+
+int __init
+init_ifxmips_mtd (void)
+{
+       int ret = platform_driver_register(&ifxmips_mtd_driver); 
+       if (ret) 
+               printk(KERN_INFO DRVNAME ": error registering platfom driver!"); 
+
+       return ret; 
+}
+
 static void
 __exit
-cleanup_danube_mtd (void)
+cleanup_ifxmips_mtd (void)
 {
+       platform_driver_unregister(&ifxmips_mtd_driver);
 }
 
-module_init (init_danube_mtd);
-module_exit (cleanup_danube_mtd);
+module_init (init_ifxmips_mtd);
+module_exit (cleanup_ifxmips_mtd);
 
 MODULE_LICENSE ("GPL");
 MODULE_AUTHOR ("John Crispin <blogic@openwrt.org>");
index cedab2c..3575596 100644 (file)
@@ -30,6 +30,9 @@
 #define IOMEM_RESOURCE_START   0x10000000
 #define IOMEM_RESOURCE_END             0xffffffff
 
+#define IFXMIPS_FLASH_START     0x10000000
+#define IFXMIPS_FLASH_MAX       0x2000000
+
 
 /*------------ ASC1 */