From patchwork Mon Apr 27 05:42:04 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Schocher X-Patchwork-Id: 464788 X-Patchwork-Delegate: jagannadh.teki@gmail.com Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from theia.denx.de (theia.denx.de [85.214.87.163]) by ozlabs.org (Postfix) with ESMTP id 9E418140079 for ; Mon, 27 Apr 2015 15:42:59 +1000 (AEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id A4FD54BB03; Mon, 27 Apr 2015 07:42:47 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 1FXQfSHe2p9V; Mon, 27 Apr 2015 07:42:47 +0200 (CEST) Received: from theia.denx.de (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 45ECB4BB07; Mon, 27 Apr 2015 07:42:32 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by theia.denx.de (Postfix) with ESMTP id 7C16A4BAA6 for ; Mon, 27 Apr 2015 07:42:23 +0200 (CEST) Received: from theia.denx.de ([127.0.0.1]) by localhost (theia.denx.de [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id hJdAeVZDzl-W for ; Mon, 27 Apr 2015 07:42:23 +0200 (CEST) X-policyd-weight: NOT_IN_SBL_XBL_SPAMHAUS=-1.5 NOT_IN_SPAMCOP=-1.5 NOT_IN_BL_NJABL=-1.5 (only DNSBL check requested) Received: from pollux.denx.de (host-82-135-33-74.customer.m-online.net [82.135.33.74]) by theia.denx.de (Postfix) with ESMTP id 1B1FB4BAA0 for ; Mon, 27 Apr 2015 07:42:18 +0200 (CEST) Received: by pollux.denx.de (Postfix, from userid 515) id 74EA54380; Mon, 27 Apr 2015 07:42:18 +0200 (CEST) From: Heiko Schocher To: u-boot@lists.denx.de Date: Mon, 27 Apr 2015 07:42:04 +0200 Message-Id: <1430113328-29184-2-git-send-email-hs@denx.de> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1430113328-29184-1-git-send-email-hs@denx.de> References: <1430113328-29184-1-git-send-email-hs@denx.de> Subject: [U-Boot] [PATCH v6 1/4] mtd, spi: add MTD layer driver X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.15 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" From: Daniel Schwierzeck add MTD layer driver for spi, original patch from: http://git.denx.de/?p=u-boot/u-boot-mips.git;a=commitdiff;h=bb246819cdc90493dd7089eaa51b9e639765cced changes from Heiko Schocher against this patch: - remove compile error if not defining CONFIG_SPI_FLASH_MTD: LD drivers/mtd/spi/built-in.o drivers/mtd/spi/sf_probe.o: In function `spi_flash_mtd_unregister': /home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister' drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here drivers/mtd/spi/sf_ops.o: In function `spi_flash_mtd_unregister': /home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: multiple definition of `spi_flash_mtd_unregister' drivers/mtd/spi/sf_params.o:/home/hs/abb/imx6/u-boot/drivers/mtd/spi/sf_internal.h:168: first defined here make[1]: *** [drivers/mtd/spi/built-in.o] Fehler 1 make: *** [drivers/mtd/spi] Fehler 2 - add a README entry. - add correct writebufsize, to fit with Linux v3.14 MTD, UBI/UBIFS sync. Signed-off-by: Daniel Schwierzeck Signed-off-by: Heiko Schocher --- Changes in v6: None Changes in v2: - add comment from Daniel Schwierzeck: fix compile error from original patch with "static inline" rather than "static __maybe_unused" Series-changes: 3 - rebase with d6c1ffc7d23f4fe4ae8c91101861055b8e1501b6 Series-changes: 4 - rebased against 385a08a60f042061b004642d6b9bb6cfb794ad5a Series-changes: 5 - no changes Series-changes: 6 - add comments from Jagan Teki: move code, which checks if flash pointer is used into a new patch. - use #ifdef in Code - call mtd register before the spi_release_bus README | 3 ++ common/cmd_sf.c | 2 - drivers/mtd/spi/Makefile | 1 + drivers/mtd/spi/sf_internal.h | 5 ++ drivers/mtd/spi/sf_mtd.c | 104 ++++++++++++++++++++++++++++++++++++++++++ drivers/mtd/spi/sf_probe.c | 10 ++-- 6 files changed, 119 insertions(+), 6 deletions(-) create mode 100644 drivers/mtd/spi/sf_mtd.c diff --git a/README b/README index fc1fd52..36f6fc9 100644 --- a/README +++ b/README @@ -3097,6 +3097,9 @@ CBFS (Coreboot Filesystem) support operation will not execute. The only way to exit this hardware-protected mode is to drive W#/VPP HIGH. + CONFIG_SPI_FLASH_MTD + add MTD translation layer driver. + - SystemACE Support: CONFIG_SYSTEMACE diff --git a/common/cmd_sf.c b/common/cmd_sf.c index 6aabf39..0250011 100644 --- a/common/cmd_sf.c +++ b/common/cmd_sf.c @@ -139,8 +139,6 @@ static int do_spi_flash_probe(int argc, char * const argv[]) return 1; } - if (flash) - spi_flash_free(flash); flash = new; #endif diff --git a/drivers/mtd/spi/Makefile b/drivers/mtd/spi/Makefile index c61b784e..f8580cd 100644 --- a/drivers/mtd/spi/Makefile +++ b/drivers/mtd/spi/Makefile @@ -17,5 +17,6 @@ obj-$(CONFIG_SPI_FLASH) += sf_probe.o #endif obj-$(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 785f7a9..8a2eb6e 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -221,4 +221,9 @@ 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 0000000..0b9cb62 --- /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 +#include +#include +#include +#include + +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 d19138d..2342972 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -397,10 +397,9 @@ int spi_flash_probe_slave(struct spi_slave *spi, struct spi_flash *flash) if (spi_enable_wp_pin(flash)) puts("Enable WP pin failed\n"); - /* 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); @@ -450,6 +449,9 @@ 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); }