bfin-async-flash.c revision 5a0e3ad6af8660be21ca98a971cd00f331318c05
12e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger/* 22e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * drivers/mtd/maps/bfin-async-flash.c 32e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * 42e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * Handle the case where flash memory and ethernet mac/phy are 52e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * mapped onto the same async bank. The BF533-STAMP does this 62e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * for example. All board-specific configuration goes in your 72e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * board resources file. 82e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * 92f82af08fcc7dc01a7e98a49a5995a77e32a2925Nicolas Pitre * Copyright 2000 Nicolas Pitre <nico@fluxnic.net> 102e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * Copyright 2005-2008 Analog Devices Inc. 112e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * 122e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * Enter bugs at http://blackfin.uclinux.org/ 132e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * 142e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger * Licensed under the GPL-2 or later. 152e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger */ 162e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 172e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/init.h> 182e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/kernel.h> 192e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/module.h> 202e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/mtd/mtd.h> 212e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/mtd/map.h> 222e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/mtd/partitions.h> 232e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/mtd/physmap.h> 242e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/platform_device.h> 255a0e3ad6af8660be21ca98a971cd00f331318c05Tejun Heo#include <linux/slab.h> 262e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/types.h> 272e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 282e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <asm/blackfin.h> 292e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/gpio.h> 302e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <linux/io.h> 312e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#include <asm/unaligned.h> 322e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 332e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#define pr_devinit(fmt, args...) ({ static const __devinitconst char __fmt[] = fmt; printk(__fmt, ## args); }) 342e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 352e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#define DRIVER_NAME "bfin-async-flash" 362e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 372e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstruct async_state { 382e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct mtd_info *mtd; 392e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct map_info map; 402e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger int enet_flash_pin; 412e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger uint32_t flash_ambctl0, flash_ambctl1; 422e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger uint32_t save_ambctl0, save_ambctl1; 432e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger unsigned long irq_flags; 444938c88c922fad23f0a9f404eeda0207a819e4dfMike Frysinger#ifdef CONFIG_MTD_PARTITIONS 454938c88c922fad23f0a9f404eeda0207a819e4dfMike Frysinger struct mtd_partition *parts; 464938c88c922fad23f0a9f404eeda0207a819e4dfMike Frysinger#endif 472e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger}; 482e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 492e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void switch_to_flash(struct async_state *state) 502e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 512e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger local_irq_save(state->irq_flags); 522e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 532e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger gpio_set_value(state->enet_flash_pin, 0); 542e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 552e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->save_ambctl0 = bfin_read_EBIU_AMBCTL0(); 562e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->save_ambctl1 = bfin_read_EBIU_AMBCTL1(); 572e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger bfin_write_EBIU_AMBCTL0(state->flash_ambctl0); 582e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger bfin_write_EBIU_AMBCTL1(state->flash_ambctl1); 592e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger SSYNC(); 602e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 612e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 622e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void switch_back(struct async_state *state) 632e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 642e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger bfin_write_EBIU_AMBCTL0(state->save_ambctl0); 652e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger bfin_write_EBIU_AMBCTL1(state->save_ambctl1); 662e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger SSYNC(); 672e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 682e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger gpio_set_value(state->enet_flash_pin, 1); 692e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 702e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger local_irq_restore(state->irq_flags); 712e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 722e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 732e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic map_word bfin_read(struct map_info *map, unsigned long ofs) 742e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 752e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state = (struct async_state *)map->map_priv_1; 762e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger uint16_t word; 772e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger map_word test; 782e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 792e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_to_flash(state); 802e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 812e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger word = readw(map->virt + ofs); 822e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 832e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_back(state); 842e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 852e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger test.x[0] = word; 862e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return test; 872e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 882e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 892e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void bfin_copy_from(struct map_info *map, void *to, unsigned long from, ssize_t len) 902e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 912e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state = (struct async_state *)map->map_priv_1; 922e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 932e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_to_flash(state); 942e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 952e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger memcpy(to, map->virt + from, len); 962e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 972e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_back(state); 982e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 992e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1002e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void bfin_write(struct map_info *map, map_word d1, unsigned long ofs) 1012e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 1022e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state = (struct async_state *)map->map_priv_1; 1032e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger uint16_t d; 1042e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1052e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger d = d1.x[0]; 1062e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1072e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_to_flash(state); 1082e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1092e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger writew(d, map->virt + ofs); 1102e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger SSYNC(); 1112e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1122e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_back(state); 1132e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 1142e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1152e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void bfin_copy_to(struct map_info *map, unsigned long to, const void *from, ssize_t len) 1162e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 1172e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state = (struct async_state *)map->map_priv_1; 1182e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1192e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_to_flash(state); 1202e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1212e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger memcpy(map->virt + to, from, len); 1222e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger SSYNC(); 1232e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1242e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger switch_back(state); 1252e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 1262e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1272e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#ifdef CONFIG_MTD_PARTITIONS 1282e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic const char *part_probe_types[] = { "cmdlinepart", "RedBoot", NULL }; 1292e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#endif 1302e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1312e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic int __devinit bfin_flash_probe(struct platform_device *pdev) 1322e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 1332e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger int ret; 1342e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct physmap_flash_data *pdata = pdev->dev.platform_data; 1352e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct resource *memory = platform_get_resource(pdev, IORESOURCE_MEM, 0); 1362e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct resource *flash_ambctl = platform_get_resource(pdev, IORESOURCE_MEM, 1); 1372e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state; 1382e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1392e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state = kzalloc(sizeof(*state), GFP_KERNEL); 1402e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger if (!state) 1412e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return -ENOMEM; 1422e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1432e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.name = DRIVER_NAME; 1442e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.read = bfin_read; 1452e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.copy_from = bfin_copy_from; 1462e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.write = bfin_write; 1472e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.copy_to = bfin_copy_to; 1482e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.bankwidth = pdata->width; 1492e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.size = memory->end - memory->start + 1; 1502e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.virt = (void __iomem *)memory->start; 1512e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.phys = memory->start; 1522e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->map.map_priv_1 = (unsigned long)state; 1532e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->enet_flash_pin = platform_get_irq(pdev, 0); 1542e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->flash_ambctl0 = flash_ambctl->start; 1552e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->flash_ambctl1 = flash_ambctl->end; 1562e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1572e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger if (gpio_request(state->enet_flash_pin, DRIVER_NAME)) { 1582e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger pr_devinit(KERN_ERR DRIVER_NAME ": Failed to request gpio %d\n", state->enet_flash_pin); 15910715b8751dfc403aeb7fbc35166417fa1664edaMike Frysinger kfree(state); 1602e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return -EBUSY; 1612e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger } 1622e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger gpio_direction_output(state->enet_flash_pin, 1); 1632e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1642e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger pr_devinit(KERN_NOTICE DRIVER_NAME ": probing %d-bit flash bus\n", state->map.bankwidth * 8); 1652e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger state->mtd = do_map_probe(memory->name, &state->map); 16610715b8751dfc403aeb7fbc35166417fa1664edaMike Frysinger if (!state->mtd) { 16710715b8751dfc403aeb7fbc35166417fa1664edaMike Frysinger gpio_free(state->enet_flash_pin); 16810715b8751dfc403aeb7fbc35166417fa1664edaMike Frysinger kfree(state); 1692e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return -ENXIO; 17010715b8751dfc403aeb7fbc35166417fa1664edaMike Frysinger } 1712e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1722e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#ifdef CONFIG_MTD_PARTITIONS 1732e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger ret = parse_mtd_partitions(state->mtd, part_probe_types, &pdata->parts, 0); 1742e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger if (ret > 0) { 1752e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger pr_devinit(KERN_NOTICE DRIVER_NAME ": Using commandline partition definition\n"); 1762e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger add_mtd_partitions(state->mtd, pdata->parts, ret); 1774938c88c922fad23f0a9f404eeda0207a819e4dfMike Frysinger state->parts = pdata->parts; 1782e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1792e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger } else if (pdata->nr_parts) { 1802e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger pr_devinit(KERN_NOTICE DRIVER_NAME ": Using board partition definition\n"); 1812e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger add_mtd_partitions(state->mtd, pdata->parts, pdata->nr_parts); 1822e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1832e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger } else 1842e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#endif 1852e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger { 1862e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger pr_devinit(KERN_NOTICE DRIVER_NAME ": no partition info available, registering whole flash at once\n"); 1872e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger add_mtd_device(state->mtd); 1882e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger } 1892e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1902e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger platform_set_drvdata(pdev, state); 1912e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1922e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return 0; 1932e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 1942e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 1952e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic int __devexit bfin_flash_remove(struct platform_device *pdev) 1962e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 1972e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger struct async_state *state = platform_get_drvdata(pdev); 1982e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger gpio_free(state->enet_flash_pin); 1992e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#ifdef CONFIG_MTD_PARTITIONS 2002e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger del_mtd_partitions(state->mtd); 2014938c88c922fad23f0a9f404eeda0207a819e4dfMike Frysinger kfree(state->parts); 2022e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger#endif 2032e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger map_destroy(state->mtd); 2042e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger kfree(state); 2052e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return 0; 2062e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 2072e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 2082e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic struct platform_driver bfin_flash_driver = { 2092e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger .probe = bfin_flash_probe, 2102e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger .remove = __devexit_p(bfin_flash_remove), 2112e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger .driver = { 2122e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger .name = DRIVER_NAME, 2132e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger }, 2142e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger}; 2152e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 2162e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic int __init bfin_flash_init(void) 2172e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 2182e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger return platform_driver_register(&bfin_flash_driver); 2192e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 2202e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingermodule_init(bfin_flash_init); 2212e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 2222e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingerstatic void __exit bfin_flash_exit(void) 2232e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger{ 2242e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger platform_driver_unregister(&bfin_flash_driver); 2252e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger} 2262e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysingermodule_exit(bfin_flash_exit); 2272e3c22f57029ce04d55c07b8332ae405005456d9Mike Frysinger 2282e3c22f57029ce04d55c07b8332ae405005456d9Mike FrysingerMODULE_LICENSE("GPL"); 2292e3c22f57029ce04d55c07b8332ae405005456d9Mike FrysingerMODULE_DESCRIPTION("MTD map driver for Blackfins with flash/ethernet on same async bank"); 230