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0e47c969c6
- Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get David's "ack" for this; I'm sure he approves, but he's been pretty silent lately) - Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver - Last (?) round of pxa3xx improvements for supporting Armada 370/XP - Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.) - Quad read mode support for SPI NOR driver (m25p80) - Update Davinci NAND driver to prepare for use on new platforms - Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending - Miscellaneous NAND device support (new IDs) - Add READ RETRY support for Micron MLC NAND - Support new GPMI NAND ECC layout device-tree binding - Avoid mapping stack/vmalloc() memory for GPMI NAND DMA -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) iQIcBAABAgAGBQJS50wMAAoJEFySrpd9RFgt1I0P/3fxzmHMmTRPjNRmtVqE5buW L3CjI1sPypA5PgCjjwABQdiw8WztBt6KVlMv5Gs6gaoi/WYAyAWz40PfwuBWFklD L8+cuKuuslsFfqh+gdkrBkNKnrFfMJpTDx57E5+dciInmWWB1w14sHMAYk5A/ZHK MBfXCcgfIECeQp1zSKmBtQxkhqn20hOS232gsCRWu2NWWu4UCzEcRLHGCBP1qqi3 6joQhrICiQJwH09D+I9YfyS/oisM+75Df+79xephcjMaJYAAE3tLVrKM84CBso+R R/wjOvX+xFVyvf3n+CftxbmbFVXtRAWqCEEHu2yKffiF9oipp9xOm6gqJb9SYX/7 n54fexx5cM1AE8OeDCxgbVCNfgoqDS6hk03d5oVMRmASShr0Ye4irG77Dy/KTMGC UdB2gb5HoKPC2N2IWWRlpwRoyLR9Xhf/+iCHjac0kB7oYQ0IdMyC0d4h7Prp5r/4 zaz/pBNNr1lL8DOFrIog02U1DL7jOBtMmlaCUnfrPkXOiwG04Inkfy7Gfug0uTIh o1JhwCWmrY/CLYmpMqKFK9V4gr72CZTGIjMeNpb2NUAM0XlRbf3AQ8x7P7Q9UjK6 ARZC/3lPrkSE8BDgSP8cT/oXB5zsIAU0jJbu3yIixD/v9WwMyKjoS4E8crl7qVB4 KDAzQNR3rjwmE9lOjtsx =3nT9 -----END PGP SIGNATURE----- Merge tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd Pull MTD updates from Brian Norris: - Add me (Brian Norris) as an additional MTD maintainer (it'd be nice to get David's "ack" for this; I'm sure he approves, but he's been pretty silent lately) - Add Ezequiel Garcie as maintainer for the pxa3xx NAND driver - Last (?) round of pxa3xx improvements for supporting Armada 370/XP - Typical churn in driver boilerplate (OOM messages, printk()'s, devm_*, etc.) - Quad read mode support for SPI NOR driver (m25p80) - Update Davinci NAND driver to prepare for use on new platforms - Begin to kill off NAND_MAX_{PAGE,OOB}SIZE macros; more work is pending - Miscellaneous NAND device support (new IDs) - Add READ RETRY support for Micron MLC NAND - Support new GPMI NAND ECC layout device-tree binding - Avoid mapping stack/vmalloc() memory for GPMI NAND DMA * tag 'for-linus-20140127' of git://git.infradead.org/linux-mtd: (151 commits) mtd: gpmi: add sanity check when mapping DMA for read_buf/write_buf mtd: gpmi: allocate a proper buffer for non ECC read/write mtd: m25p80: Set rx_nbits for Quad SPI transfers mtd: m25p80: Enable Quad SPI read transfers for s25fl512s mtd: s3c2410: Merge plat/regs-nand.h into s3c2410.c mtd: mtdram: add missing 'const' mtd: m25p80: assign default read command mtd: nuc900_nand: remove redundant return value check of platform_get_resource() mtd: plat_nand: remove redundant return value check of platform_get_resource() mtd: nand: add Intel manufacturer ID mtd: nand: add SanDisk manufacturer ID mtd: nand: add support for Samsung K9LCG08U0B mtd: nand: pxa3xx: Add support for 2048 bytes page size devices mtd: m25p80: Use OPCODE_QUAD_READ_4B for 4-byte addressing mtd: nand: don't use {read,write}_buf for 8-bit transfers mtd: nand: use __packed shorthand mtd: nand: support Micron READ RETRY mtd: nand: add generic READ RETRY support mtd: nand: add ONFI vendor block for Micron mtd: nand: localize ECC failures per page ...
147 lines
3.6 KiB
C
147 lines
3.6 KiB
C
/*
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* Map driver for Intel XScale PXA2xx platforms.
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*
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* Author: Nicolas Pitre
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* Copyright: (C) 2001 MontaVista Software Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/slab.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/map.h>
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#include <linux/mtd/partitions.h>
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#include <asm/io.h>
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#include <mach/hardware.h>
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#include <asm/mach/flash.h>
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#define CACHELINESIZE 32
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static void pxa2xx_map_inval_cache(struct map_info *map, unsigned long from,
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ssize_t len)
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{
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unsigned long start = (unsigned long)map->cached + from;
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unsigned long end = start + len;
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start &= ~(CACHELINESIZE - 1);
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while (start < end) {
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/* invalidate D cache line */
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asm volatile ("mcr p15, 0, %0, c7, c6, 1" : : "r" (start));
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start += CACHELINESIZE;
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}
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}
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struct pxa2xx_flash_info {
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struct mtd_info *mtd;
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struct map_info map;
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};
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static const char * const probes[] = { "RedBoot", "cmdlinepart", NULL };
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static int pxa2xx_flash_probe(struct platform_device *pdev)
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{
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struct flash_platform_data *flash = dev_get_platdata(&pdev->dev);
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struct pxa2xx_flash_info *info;
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struct resource *res;
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (!res)
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return -ENODEV;
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info = kzalloc(sizeof(struct pxa2xx_flash_info), GFP_KERNEL);
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if (!info)
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return -ENOMEM;
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info->map.name = flash->name;
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info->map.bankwidth = flash->width;
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info->map.phys = res->start;
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info->map.size = resource_size(res);
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info->map.virt = ioremap(info->map.phys, info->map.size);
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if (!info->map.virt) {
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printk(KERN_WARNING "Failed to ioremap %s\n",
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info->map.name);
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return -ENOMEM;
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}
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info->map.cached =
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ioremap_cache(info->map.phys, info->map.size);
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if (!info->map.cached)
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printk(KERN_WARNING "Failed to ioremap cached %s\n",
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info->map.name);
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info->map.inval_cache = pxa2xx_map_inval_cache;
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simple_map_init(&info->map);
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printk(KERN_NOTICE
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"Probing %s at physical address 0x%08lx"
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" (%d-bit bankwidth)\n",
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info->map.name, (unsigned long)info->map.phys,
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info->map.bankwidth * 8);
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info->mtd = do_map_probe(flash->map_name, &info->map);
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if (!info->mtd) {
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iounmap((void *)info->map.virt);
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if (info->map.cached)
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iounmap(info->map.cached);
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return -EIO;
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}
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info->mtd->owner = THIS_MODULE;
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mtd_device_parse_register(info->mtd, probes, NULL, flash->parts,
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flash->nr_parts);
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platform_set_drvdata(pdev, info);
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return 0;
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}
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static int pxa2xx_flash_remove(struct platform_device *dev)
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{
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struct pxa2xx_flash_info *info = platform_get_drvdata(dev);
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mtd_device_unregister(info->mtd);
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map_destroy(info->mtd);
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iounmap(info->map.virt);
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if (info->map.cached)
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iounmap(info->map.cached);
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kfree(info);
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return 0;
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}
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#ifdef CONFIG_PM
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static void pxa2xx_flash_shutdown(struct platform_device *dev)
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{
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struct pxa2xx_flash_info *info = platform_get_drvdata(dev);
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if (info && mtd_suspend(info->mtd) == 0)
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mtd_resume(info->mtd);
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}
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#else
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#define pxa2xx_flash_shutdown NULL
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#endif
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static struct platform_driver pxa2xx_flash_driver = {
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.driver = {
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.name = "pxa2xx-flash",
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.owner = THIS_MODULE,
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},
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.probe = pxa2xx_flash_probe,
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.remove = pxa2xx_flash_remove,
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.shutdown = pxa2xx_flash_shutdown,
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};
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module_platform_driver(pxa2xx_flash_driver);
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MODULE_LICENSE("GPL");
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MODULE_AUTHOR("Nicolas Pitre <nico@fluxnic.net>");
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MODULE_DESCRIPTION("MTD map driver for Intel XScale PXA2xx");
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