diff options
Diffstat (limited to 'target/linux/brcm47xx/patches-3.2/027-mtd-bcm47xx-add-serial-flash-driver.patch')
| -rw-r--r-- | target/linux/brcm47xx/patches-3.2/027-mtd-bcm47xx-add-serial-flash-driver.patch | 310 |
1 files changed, 0 insertions, 310 deletions
diff --git a/target/linux/brcm47xx/patches-3.2/027-mtd-bcm47xx-add-serial-flash-driver.patch b/target/linux/brcm47xx/patches-3.2/027-mtd-bcm47xx-add-serial-flash-driver.patch deleted file mode 100644 index 45e4a093a0..0000000000 --- a/target/linux/brcm47xx/patches-3.2/027-mtd-bcm47xx-add-serial-flash-driver.patch +++ /dev/null @@ -1,310 +0,0 @@ ---- a/arch/mips/include/asm/mach-bcm47xx/bus.h -+++ b/arch/mips/include/asm/mach-bcm47xx/bus.h -@@ -11,6 +11,7 @@ - - #include <linux/ssb/ssb.h> - #include <linux/bcma/bcma.h> -+#include <linux/mtd/mtd.h> - #include <bcm47xx.h> - - struct bcm47xx_sflash { -@@ -28,6 +29,8 @@ struct bcm47xx_sflash { - u32 blocksize; /* Block size */ - u32 numblocks; /* Number of blocks */ - u32 size; /* Total size in bytes */ -+ -+ struct mtd_info *mtd; - }; - - void bcm47xx_sflash_struct_bcma_init(struct bcm47xx_sflash *sflash, struct bcma_drv_cc *bcc); ---- a/drivers/mtd/maps/Kconfig -+++ b/drivers/mtd/maps/Kconfig -@@ -266,6 +266,15 @@ config MTD_BCM47XX_PFLASH - help - Support for bcm47xx parallel flash - -+config MTD_BCM47XX_SFLASH -+ tristate "bcm47xx serial flash support" -+ default y -+ depends on BCM47XX -+ select MTD_PARTITIONS -+ select MTD_BCM47XX_PARTS -+ help -+ Support for bcm47xx parallel flash -+ - config MTD_DILNETPC - tristate "CFI Flash device mapped on DIL/Net PC" - depends on X86 && MTD_CFI_INTELEXT && BROKEN ---- a/drivers/mtd/maps/Makefile -+++ b/drivers/mtd/maps/Makefile -@@ -59,3 +59,4 @@ obj-$(CONFIG_MTD_BCM963XX) += bcm963xx-f - obj-$(CONFIG_MTD_LATCH_ADDR) += latch-addr-flash.o - obj-$(CONFIG_MTD_LANTIQ) += lantiq-flash.o - obj-$(CONFIG_MTD_BCM47XX_PFLASH)+= bcm47xx-pflash.o -+obj-$(CONFIG_MTD_BCM47XX_SFLASH)+= bcm47xx-sflash.o ---- /dev/null -+++ b/drivers/mtd/maps/bcm47xx-sflash.c -@@ -0,0 +1,263 @@ -+/* -+ * Broadcom SiliconBackplane chipcommon serial flash interface -+ * -+ * Copyright 2011, 2012, Hauke Mehrtens <hauke@hauke-m.de> -+ * Copyright 2006, Broadcom Corporation -+ * All Rights Reserved. -+ * -+ * Licensed under the GNU/GPL. See COPYING for details. -+ */ -+ -+#define pr_fmt(fmt) "bcm47xx_sflash: " fmt -+#include <linux/module.h> -+#include <linux/slab.h> -+#include <linux/ioport.h> -+#include <linux/sched.h> -+#include <linux/mtd/mtd.h> -+#include <linux/mtd/map.h> -+#include <linux/mtd/partitions.h> -+#include <linux/errno.h> -+#include <linux/delay.h> -+#include <linux/platform_device.h> -+#include <bcm47xx.h> -+#include <bus.h> -+ -+static int -+sflash_mtd_poll(struct bcm47xx_sflash *sflash, unsigned int offset, int timeout) -+{ -+ unsigned long now = jiffies; -+ -+ for (;;) { -+ if (!sflash->poll(sflash, offset)) { -+ break; -+ } -+ if (time_after(jiffies, now + timeout)) { -+ pr_err("timeout while polling\n"); -+ return -ETIMEDOUT; -+ -+ } -+ cpu_relax(); -+ udelay(1); -+ } -+ -+ return 0; -+} -+ -+static int -+sflash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf) -+{ -+ struct bcm47xx_sflash *sflash = (struct bcm47xx_sflash *)mtd->priv; -+ -+ /* Check address range */ -+ if (!len) -+ return 0; -+ -+ if ((from + len) > mtd->size) -+ return -EINVAL; -+ -+ *retlen = 0; -+ while (len) { -+ int ret = sflash->read(sflash, from, len, buf); -+ if (ret < 0) -+ return ret; -+ -+ from += (loff_t) ret; -+ len -= ret; -+ buf += ret; -+ *retlen += ret; -+ } -+ -+ return 0; -+} -+ -+static int -+sflash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen, const u_char *buf) -+{ -+ int bytes; -+ int ret; -+ struct bcm47xx_sflash *sflash = (struct bcm47xx_sflash *)mtd->priv; -+ -+ /* Check address range */ -+ if (!len) -+ return 0; -+ -+ if ((to + len) > mtd->size) -+ return -EINVAL; -+ -+ *retlen = 0; -+ while (len) { -+ ret = sflash->write(sflash, to, len, buf); -+ if (ret < 0) -+ return ret; -+ -+ bytes = ret; -+ -+ ret = sflash_mtd_poll(sflash, (unsigned int) to, HZ / 10); -+ if (ret) -+ return ret; -+ -+ to += (loff_t) bytes; -+ len -= bytes; -+ buf += bytes; -+ *retlen += bytes; -+ } -+ -+ return 0; -+} -+ -+static int -+sflash_mtd_erase(struct mtd_info *mtd, struct erase_info *erase) -+{ -+ struct bcm47xx_sflash *sflash = (struct bcm47xx_sflash *) mtd->priv; -+ int i, j, ret = 0; -+ unsigned int addr, len; -+ -+ /* Check address range */ -+ if (!erase->len) -+ return 0; -+ if ((erase->addr + erase->len) > mtd->size) -+ return -EINVAL; -+ -+ addr = erase->addr; -+ len = erase->len; -+ -+ /* Ensure that requested regions are aligned */ -+ for (i = 0; i < mtd->numeraseregions; i++) { -+ for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { -+ if (addr == mtd->eraseregions[i].offset + -+ mtd->eraseregions[i].erasesize * j && -+ len >= mtd->eraseregions[i].erasesize) { -+ ret = sflash->erase(sflash, addr); -+ if (ret < 0) -+ break; -+ ret = sflash_mtd_poll(sflash, addr, 10 * HZ); -+ if (ret) -+ break; -+ addr += mtd->eraseregions[i].erasesize; -+ len -= mtd->eraseregions[i].erasesize; -+ } -+ } -+ if (ret) -+ break; -+ } -+ -+ /* Set erase status */ -+ if (ret) -+ erase->state = MTD_ERASE_FAILED; -+ else -+ erase->state = MTD_ERASE_DONE; -+ -+ /* Call erase callback */ -+ if (erase->callback) -+ erase->callback(erase); -+ -+ return ret; -+} -+ -+static const char *probes[] = { "bcm47xx", NULL }; -+ -+static int bcm47xx_sflash_probe(struct platform_device *pdev) -+{ -+ struct bcm47xx_sflash *sflash = dev_get_platdata(&pdev->dev); -+ struct mtd_info *mtd; -+ struct mtd_erase_region_info *eraseregions; -+ int ret = 0; -+ -+ mtd = kzalloc(sizeof(struct mtd_info), GFP_KERNEL); -+ if (!mtd){ -+ ret = -ENOMEM; -+ goto err_out; -+ } -+ -+ eraseregions = kzalloc(sizeof(struct mtd_erase_region_info), GFP_KERNEL); -+ if (!eraseregions) { -+ ret = -ENOMEM; -+ goto err_free_mtd; -+ } -+ -+ pr_info("found serial flash: blocksize=%dKB, numblocks=%d, size=%dKB\n", -+ sflash->blocksize / 1024, sflash->numblocks, sflash->size / 1024); -+ -+ /* Setup region info */ -+ eraseregions->offset = 0; -+ eraseregions->erasesize = sflash->blocksize; -+ eraseregions->numblocks = sflash->numblocks; -+ if (eraseregions->erasesize > mtd->erasesize) -+ mtd->erasesize = eraseregions->erasesize; -+ mtd->size = sflash->size; -+ mtd->numeraseregions = 1; -+ -+ /* Register with MTD */ -+ mtd->name = "bcm47xx-sflash"; -+ mtd->type = MTD_NORFLASH; -+ mtd->flags = MTD_CAP_NORFLASH; -+ mtd->eraseregions = eraseregions; -+ mtd->erase = sflash_mtd_erase; -+ mtd->read = sflash_mtd_read; -+ mtd->write = sflash_mtd_write; -+ mtd->writesize = 1; -+ mtd->priv = sflash; -+ ret = dev_set_drvdata(&pdev->dev, mtd); -+ mtd->owner = THIS_MODULE; -+ if (ret) { -+ pr_err("adding private data failed\n"); -+ goto err_free_eraseregions; -+ } -+ -+ ret = mtd_device_parse_register(mtd, probes, NULL, NULL, 0); -+ -+ if (ret) { -+ pr_err("mtd_device_register failed\n"); -+ goto err_free_eraseregions; -+ } -+ return 0; -+ -+err_free_eraseregions: -+ kfree(eraseregions); -+err_free_mtd: -+ kfree(mtd); -+err_out: -+ return ret; -+} -+ -+static int __devexit bcm47xx_sflash_remove(struct platform_device *pdev) -+{ -+ struct mtd_info *mtd = dev_get_drvdata(&pdev->dev); -+ -+ if (mtd) { -+ mtd_device_unregister(mtd); -+ map_destroy(mtd); -+ kfree(mtd->eraseregions); -+ kfree(mtd); -+ dev_set_drvdata(&pdev->dev, NULL); -+ } -+ return 0; -+} -+ -+static struct platform_driver bcm47xx_sflash_driver = { -+ .remove = __devexit_p(bcm47xx_sflash_remove), -+ .driver = { -+ .name = "bcm47xx_sflash", -+ .owner = THIS_MODULE, -+ }, -+}; -+ -+static int __init init_bcm47xx_sflash(void) -+{ -+ int ret = platform_driver_probe(&bcm47xx_sflash_driver, bcm47xx_sflash_probe); -+ -+ if (ret) -+ pr_err("error registering platform driver: %i\n", ret); -+ return ret; -+} -+ -+static void __exit exit_bcm47xx_sflash(void) -+{ -+ platform_driver_unregister(&bcm47xx_sflash_driver); -+} -+ -+module_init(init_bcm47xx_sflash); -+module_exit(exit_bcm47xx_sflash); -+ -+MODULE_LICENSE("GPL"); -+MODULE_DESCRIPTION("BCM47XX parallel flash driver"); |