diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mtd/spi/Makefile | 1 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_internal.h | 5 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_mtd.c | 104 | ||||
| -rw-r--r-- | drivers/mtd/spi/sf_probe.c | 11 |
4 files changed, 116 insertions, 5 deletions
diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index 87f20bc3ad..ed46648aa3 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -18,5 +18,6 @@ obj-$(CONFIG_SPI_FLASH) += sf_probe.o obj-$(CONFIG_SF_DATAFLASH) += sf_dataflash.o obj-$(CONFIG_CMD_SF) += sf.o obj-$(CONFIG_SPI_FLASH) += sf_ops.o sf_params.o +obj-$(CONFIG_SPI_FLASH_MTD) += sf_mtd.o obj-$(CONFIG_SPI_FLASH_SANDBOX) += sandbox.o obj-$(CONFIG_SPI_M95XXX) += eeprom_m95xxx.o diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h index 4158e13322..81eea8ce9d 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -218,4 +218,9 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, int spi_flash_cmd_read_ops(struct spi_flash *flash, u32 offset, size_t len, void *data); +#ifdef CONFIG_SPI_FLASH_MTD +int spi_flash_mtd_register(struct spi_flash *flash); +void spi_flash_mtd_unregister(void); +#endif + #endif /* _SF_INTERNAL_H_ */ diff --git a/drivers/mtd/spi/sf_mtd.c b/drivers/mtd/spi/sf_mtd.c new file mode 100644 index 0000000000..0b9cb62261 --- /dev/null +++ b/drivers/mtd/spi/sf_mtd.c @@ -0,0 +1,104 @@ +/* + * Copyright (C) 2012-2014 Daniel Schwierzeck, daniel.schwierzeck@gmail.com + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <malloc.h> +#include <asm/errno.h> +#include <linux/mtd/mtd.h> +#include <spi_flash.h> + +static struct mtd_info sf_mtd_info; +static char sf_mtd_name[8]; + +static int spi_flash_mtd_erase(struct mtd_info *mtd, struct erase_info *instr) +{ + struct spi_flash *flash = mtd->priv; + int err; + + instr->state = MTD_ERASING; + + err = spi_flash_erase(flash, instr->addr, instr->len); + if (err) { + instr->state = MTD_ERASE_FAILED; + instr->fail_addr = MTD_FAIL_ADDR_UNKNOWN; + return -EIO; + } + + instr->state = MTD_ERASE_DONE; + mtd_erase_callback(instr); + + return 0; +} + +static int spi_flash_mtd_read(struct mtd_info *mtd, loff_t from, size_t len, + size_t *retlen, u_char *buf) +{ + struct spi_flash *flash = mtd->priv; + int err; + + err = spi_flash_read(flash, from, len, buf); + if (!err) + *retlen = len; + + return err; +} + +static int spi_flash_mtd_write(struct mtd_info *mtd, loff_t to, size_t len, + size_t *retlen, const u_char *buf) +{ + struct spi_flash *flash = mtd->priv; + int err; + + err = spi_flash_write(flash, to, len, buf); + if (!err) + *retlen = len; + + return err; +} + +static void spi_flash_mtd_sync(struct mtd_info *mtd) +{ +} + +static int spi_flash_mtd_number(void) +{ +#ifdef CONFIG_SYS_MAX_FLASH_BANKS + return CONFIG_SYS_MAX_FLASH_BANKS; +#else + return 0; +#endif +} + +int spi_flash_mtd_register(struct spi_flash *flash) +{ + memset(&sf_mtd_info, 0, sizeof(sf_mtd_info)); + sprintf(sf_mtd_name, "nor%d", spi_flash_mtd_number()); + + sf_mtd_info.name = sf_mtd_name; + sf_mtd_info.type = MTD_NORFLASH; + sf_mtd_info.flags = MTD_CAP_NORFLASH; + sf_mtd_info.writesize = 1; + sf_mtd_info.writebufsize = flash->page_size; + + sf_mtd_info._erase = spi_flash_mtd_erase; + sf_mtd_info._read = spi_flash_mtd_read; + sf_mtd_info._write = spi_flash_mtd_write; + sf_mtd_info._sync = spi_flash_mtd_sync; + + sf_mtd_info.size = flash->size; + sf_mtd_info.priv = flash; + + /* Only uniform flash devices for now */ + sf_mtd_info.numeraseregions = 0; + sf_mtd_info.erasesize = flash->sector_size; + + return add_mtd_device(&sf_mtd_info); +} + +void spi_flash_mtd_unregister(void) +{ + del_mtd_device(&sf_mtd_info); +} diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index 201471c392..e0283dc82c 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -372,11 +372,9 @@ int spi_flash_probe_slave(struct spi_slave *spi, struct spi_flash *flash) puts(" Full access #define CONFIG_SPI_FLASH_BAR\n"); } #endif - - /* Release spi bus */ - spi_release_bus(spi); - - return 0; +#ifdef CONFIG_SPI_FLASH_MTD + ret = spi_flash_mtd_register(flash); +#endif err_read_id: spi_release_bus(spi); @@ -430,6 +428,9 @@ struct spi_flash *spi_flash_probe_fdt(const void *blob, int slave_node, void spi_flash_free(struct spi_flash *flash) { +#ifdef CONFIG_SPI_FLASH_MTD + spi_flash_mtd_unregister(); +#endif spi_free_slave(flash->spi); free(flash); } |
