diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/Makefile | 1 | ||||
| -rw-r--r-- | drivers/of/of_mtd.c | 119 |
2 files changed, 0 insertions, 120 deletions
diff --git a/drivers/of/Makefile b/drivers/of/Makefile index bee3fa96b981..d7efd9d458aa 100644 --- a/drivers/of/Makefile +++ b/drivers/of/Makefile @@ -10,7 +10,6 @@ obj-$(CONFIG_OF_UNITTEST) += unittest.o obj-$(CONFIG_OF_MDIO) += of_mdio.o obj-$(CONFIG_OF_PCI) += of_pci.o obj-$(CONFIG_OF_PCI_IRQ) += of_pci_irq.o -obj-$(CONFIG_OF_MTD) += of_mtd.o obj-$(CONFIG_OF_RESERVED_MEM) += of_reserved_mem.o obj-$(CONFIG_OF_RESOLVE) += resolver.o obj-$(CONFIG_OF_OVERLAY) += overlay.o diff --git a/drivers/of/of_mtd.c b/drivers/of/of_mtd.c deleted file mode 100644 index b7361ed70537..000000000000 --- a/drivers/of/of_mtd.c +++ /dev/null @@ -1,119 +0,0 @@ -/* - * Copyright 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> - * - * OF helpers for mtd. - * - * This file is released under the GPLv2 - * - */ -#include <linux/kernel.h> -#include <linux/of_mtd.h> -#include <linux/mtd/nand.h> -#include <linux/export.h> - -/** - * It maps 'enum nand_ecc_modes_t' found in include/linux/mtd/nand.h - * into the device tree binding of 'nand-ecc', so that MTD - * device driver can get nand ecc from device tree. - */ -static const char *nand_ecc_modes[] = { - [NAND_ECC_NONE] = "none", - [NAND_ECC_SOFT] = "soft", - [NAND_ECC_HW] = "hw", - [NAND_ECC_HW_SYNDROME] = "hw_syndrome", - [NAND_ECC_HW_OOB_FIRST] = "hw_oob_first", - [NAND_ECC_SOFT_BCH] = "soft_bch", -}; - -/** - * of_get_nand_ecc_mode - Get nand ecc mode for given device_node - * @np: Pointer to the given device_node - * - * The function gets ecc mode string from property 'nand-ecc-mode', - * and return its index in nand_ecc_modes table, or errno in error case. - */ -int of_get_nand_ecc_mode(struct device_node *np) -{ - const char *pm; - int err, i; - - err = of_property_read_string(np, "nand-ecc-mode", &pm); - if (err < 0) - return err; - - for (i = 0; i < ARRAY_SIZE(nand_ecc_modes); i++) - if (!strcasecmp(pm, nand_ecc_modes[i])) - return i; - - return -ENODEV; -} -EXPORT_SYMBOL_GPL(of_get_nand_ecc_mode); - -/** - * of_get_nand_ecc_step_size - Get ECC step size associated to - * the required ECC strength (see below). - * @np: Pointer to the given device_node - * - * return the ECC step size, or errno in error case. - */ -int of_get_nand_ecc_step_size(struct device_node *np) -{ - int ret; - u32 val; - - ret = of_property_read_u32(np, "nand-ecc-step-size", &val); - return ret ? ret : val; -} -EXPORT_SYMBOL_GPL(of_get_nand_ecc_step_size); - -/** - * of_get_nand_ecc_strength - Get required ECC strength over the - * correspnding step size as defined by 'nand-ecc-size' - * @np: Pointer to the given device_node - * - * return the ECC strength, or errno in error case. - */ -int of_get_nand_ecc_strength(struct device_node *np) -{ - int ret; - u32 val; - - ret = of_property_read_u32(np, "nand-ecc-strength", &val); - return ret ? ret : val; -} -EXPORT_SYMBOL_GPL(of_get_nand_ecc_strength); - -/** - * of_get_nand_bus_width - Get nand bus witdh for given device_node - * @np: Pointer to the given device_node - * - * return bus width option, or errno in error case. - */ -int of_get_nand_bus_width(struct device_node *np) -{ - u32 val; - - if (of_property_read_u32(np, "nand-bus-width", &val)) - return 8; - - switch(val) { - case 8: - case 16: - return val; - default: - return -EIO; - } -} -EXPORT_SYMBOL_GPL(of_get_nand_bus_width); - -/** - * of_get_nand_on_flash_bbt - Get nand on flash bbt for given device_node - * @np: Pointer to the given device_node - * - * return true if present false other wise - */ -bool of_get_nand_on_flash_bbt(struct device_node *np) -{ - return of_property_read_bool(np, "nand-on-flash-bbt"); -} -EXPORT_SYMBOL_GPL(of_get_nand_on_flash_bbt); |