From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jagan Teki Date: Sun, 23 Jun 2013 23:35:05 +0530 Subject: [U-Boot] [PATCH v3 1/4] sf: Unify spi_flash write code In-Reply-To: <93bba7fa-fbd4-445f-803e-fcbfaba77157@CO9EHSMHS026.ehs.local> References: <93bba7fa-fbd4-445f-803e-fcbfaba77157@CO9EHSMHS026.ehs.local> Message-ID: <51C738D1.1030202@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 21-06-2013 19:19, Jagannadha Sutradharudu Teki wrote: > Move common flash write code into spi_flash_write_common(). > > Signed-off-by: Jagannadha Sutradharudu Teki > Acked-by: Simon Glass > --- > Changes for v3: > - Used proper comments on spi_flash_write_common > Changes for v2: > - > > drivers/mtd/spi/spi_flash.c | 120 ++++++++++++++++------------------- > drivers/mtd/spi/spi_flash_internal.h | 10 +++ > 2 files changed, 63 insertions(+), 67 deletions(-) > > diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c > index 6ce82c1..03cecef 100644 > --- a/drivers/mtd/spi/spi_flash.c > +++ b/drivers/mtd/spi/spi_flash.c > @@ -68,15 +68,15 @@ int spi_flash_cmd_write(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, > return spi_flash_read_write(spi, cmd, cmd_len, data, NULL, data_len); > } > > -int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, > - size_t len, const void *buf) > +int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, > + size_t cmd_len, const void *buf, size_t buf_len) > { > - unsigned long byte_addr, page_size; > - size_t chunk_len, actual; > + struct spi_slave *spi = flash->spi; > + unsigned long timeout = SPI_FLASH_PROG_TIMEOUT; > int ret; > - u8 cmd[4]; > > - page_size = flash->page_size; > + if (buf == NULL) > + timeout = SPI_FLASH_PAGE_ERASE_TIMEOUT; > > ret = spi_claim_bus(flash->spi); > if (ret) { > @@ -84,6 +84,41 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, > return ret; > } > > + ret = spi_flash_cmd_write_enable(flash); > + if (ret < 0) { > + debug("SF: enabling write failed\n"); > + return ret; > + } > + > + ret = spi_flash_cmd_write(spi, cmd, cmd_len, buf, buf_len); > + if (ret < 0) { > + debug("SF: write cmd failed\n"); > + return ret; > + } > + > + ret = spi_flash_cmd_wait_ready(flash, timeout); > + if (ret < 0) { > + debug("SF: write %s timed out\n", > + timeout == SPI_FLASH_PROG_TIMEOUT ? > + "program" : "page erase"); > + return ret; > + } > + > + spi_release_bus(spi); > + > + return ret; > +} > + > +int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, > + size_t len, const void *buf) > +{ > + unsigned long byte_addr, page_size; > + size_t chunk_len, actual; > + u8 cmd[4]; > + int ret = -1; > + > + page_size = flash->page_size; > + > cmd[0] = CMD_PAGE_PROGRAM; > for (actual = 0; actual < len; actual += chunk_len) { > #ifdef CONFIG_SPI_FLASH_BAR > @@ -108,27 +143,16 @@ int spi_flash_cmd_write_multi(struct spi_flash *flash, u32 offset, > debug("PP: 0x%p => cmd = { 0x%02x 0x%02x%02x%02x } chunk_len = %zu\n", > buf + actual, cmd[0], cmd[1], cmd[2], cmd[3], chunk_len); > > - ret = spi_flash_cmd_write_enable(flash); > - if (ret < 0) { > - debug("SF: enabling write failed\n"); > - break; > - } > - > - ret = spi_flash_cmd_write(flash->spi, cmd, 4, > - buf + actual, chunk_len); > + ret = spi_flash_write_common(flash, cmd, sizeof(cmd), > + buf + actual, chunk_len); > if (ret < 0) { > debug("SF: write failed\n"); > break; > } > > - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); > - if (ret) > - break; > - > offset += chunk_len; > } > > - spi_release_bus(flash->spi); > return ret; > } > > @@ -242,8 +266,8 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) > int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) > { > u32 erase_size; > - int ret; > u8 cmd[4]; > + int ret = -1; > > erase_size = flash->sector_size; > if (offset % erase_size || len % erase_size) { > @@ -251,12 +275,6 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) > return -1; > } > > - ret = spi_claim_bus(flash->spi); > - if (ret) { > - debug("SF: Unable to claim SPI bus\n"); > - return ret; > - } > - > if (erase_size == 4096) > cmd[0] = CMD_ERASE_4K; > else > @@ -279,24 +297,16 @@ int spi_flash_cmd_erase(struct spi_flash *flash, u32 offset, size_t len) > debug("SF: erase %2x %2x %2x %2x (%x)\n", cmd[0], cmd[1], > cmd[2], cmd[3], offset); > > - ret = spi_flash_cmd_write_enable(flash); > - if (ret) > - goto out; > - > - ret = spi_flash_cmd_write(flash->spi, cmd, sizeof(cmd), NULL, 0); > - if (ret) > - goto out; > - > - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PAGE_ERASE_TIMEOUT); > - if (ret) > - goto out; > + ret = spi_flash_write_common(flash, cmd, sizeof(cmd), NULL, 0); > + if (ret < 0) { > + debug("SF: erase failed\n"); > + break; > + } > > offset += erase_size; > len -= erase_size; > } > > - out: > - spi_release_bus(flash->spi); > return ret; > } > > @@ -305,22 +315,10 @@ int spi_flash_cmd_write_status(struct spi_flash *flash, u8 sr) > u8 cmd; > int ret; > > - ret = spi_flash_cmd_write_enable(flash); > - if (ret < 0) { > - debug("SF: enabling write failed\n"); > - return ret; > - } > - > cmd = CMD_WRITE_STATUS; > - ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &sr, 1); > - if (ret) { > - debug("SF: fail to write status register\n"); > - return ret; > - } > - > - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); > + ret = spi_flash_write_common(flash, &cmd, 1, &sr, 1); > if (ret < 0) { > - debug("SF: write status register timed out\n"); > + debug("SF: fail to write status register\n"); > return ret; > } > > @@ -339,25 +337,13 @@ int spi_flash_cmd_bankaddr_write(struct spi_flash *flash, u8 bank_sel) > } > > cmd = flash->bank_write_cmd; > - ret = spi_flash_cmd_write_enable(flash); > + ret = spi_flash_write_common(flash, &cmd, 1, &bank_sel, 1); > if (ret < 0) { > - debug("SF: enabling write failed\n"); > - return ret; > - } > - > - ret = spi_flash_cmd_write(flash->spi, &cmd, 1, &bank_sel, 1); > - if (ret) { > - debug("SF: fail to write bank addr register\n"); > + debug("SF: fail to write bank register\n"); > return ret; > } > flash->bank_curr = bank_sel; > > - ret = spi_flash_cmd_wait_ready(flash, SPI_FLASH_PROG_TIMEOUT); > - if (ret < 0) { > - debug("SF: write bank addr register timed out\n"); > - return ret; > - } > - > return 0; > } > > diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h > index 8147f27..be3c768 100644 > --- a/drivers/mtd/spi/spi_flash_internal.h > +++ b/drivers/mtd/spi/spi_flash_internal.h > @@ -108,6 +108,16 @@ int spi_flash_bank_config(struct spi_flash *flash, u8 idcode0); > */ > int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, > size_t cmd_len, void *data, size_t data_len); > +/* > + * Used for spi_flash write operation > + * - SPI claim > + * - spi_flash_cmd_write_enable > + * - spi_flash_cmd_write > + * - spi_flash_cmd_wait_ready > + * - SPI release > + */ > +int spi_flash_write_common(struct spi_flash *flash, const u8 *cmd, > + size_t cmd_len, const void *buf, size_t buf_len); > > /* > * Send the read status command to the device and wait for the wip > Applied to u-boot-spi/master -- Thanks, Jagan.