From a4c3b40b33e41563077ea9ccbae7cac9d26ca38f Mon Sep 17 00:00:00 2001 From: Mike Frysinger Date: Mon, 10 Jan 2011 02:20:14 -0500 Subject: [PATCH] sf: unify read functions Signed-off-by: Mike Frysinger --- drivers/mtd/spi/atmel.c | 18 ++----------- drivers/mtd/spi/eon.c | 22 +-------------- drivers/mtd/spi/macronix.c | 22 +-------------- drivers/mtd/spi/spansion.c | 26 +----------------- drivers/mtd/spi/spi_flash.c | 12 +++++++++ drivers/mtd/spi/spi_flash_internal.h | 3 +++ drivers/mtd/spi/sst.c | 14 ---------- drivers/mtd/spi/stmicro.c | 22 +-------------- drivers/mtd/spi/winbond.c | 40 +--------------------------- 9 files changed, 22 insertions(+), 157 deletions(-) diff --git a/drivers/mtd/spi/atmel.c b/drivers/mtd/spi/atmel.c index 7827b750f6..a9910b11b8 100644 --- a/drivers/mtd/spi/atmel.c +++ b/drivers/mtd/spi/atmel.c @@ -143,20 +143,6 @@ static void at45_build_address(struct atmel_spi_flash *asf, u8 *cmd, u32 offset) cmd[2] = byte_addr; } -static int dataflash_read_fast_p2(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - u8 cmd[5]; - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[1] = offset >> 16; - cmd[2] = offset >> 8; - cmd[3] = offset; - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int dataflash_read_fast_at45(struct spi_flash *flash, u32 offset, size_t len, void *buf) { @@ -492,7 +478,7 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode) asf->flash.erase = dataflash_erase_at45; page_size += 1 << (params->l2_page_size - 5); } else { - asf->flash.read = dataflash_read_fast_p2; + asf->flash.read = spi_flash_cmd_read_fast; asf->flash.write = dataflash_write_p2; asf->flash.erase = dataflash_erase_p2; } @@ -501,7 +487,7 @@ struct spi_flash *spi_flash_probe_atmel(struct spi_slave *spi, u8 *idcode) case DF_FAMILY_AT26F: case DF_FAMILY_AT26DF: - asf->flash.read = dataflash_read_fast_p2; + asf->flash.read = spi_flash_cmd_read_fast; break; default: diff --git a/drivers/mtd/spi/eon.c b/drivers/mtd/spi/eon.c index 0c0b05f010..01caed5abe 100644 --- a/drivers/mtd/spi/eon.c +++ b/drivers/mtd/spi/eon.c @@ -56,26 +56,6 @@ static const struct eon_spi_flash_params eon_spi_flash_table[] = { }, }; -static int eon_read_fast(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct eon_spi_flash *eon = to_eon_spi_flash(flash); - unsigned long page_addr; - unsigned long page_size; - u8 cmd[5]; - - page_size = eon->params->page_size; - page_addr = offset / page_size; - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[1] = page_addr >> 8; - cmd[2] = page_addr; - cmd[3] = offset % page_size; - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int eon_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { @@ -177,7 +157,7 @@ struct spi_flash *spi_flash_probe_eon(struct spi_slave *spi, u8 *idcode) eon->flash.write = eon_write; eon->flash.erase = eon_erase; - eon->flash.read = eon_read_fast; + eon->flash.read = spi_flash_cmd_read_fast; eon->flash.size = params->page_size * params->pages_per_sector * params->nr_sectors; diff --git a/drivers/mtd/spi/macronix.c b/drivers/mtd/spi/macronix.c index 573e1dba7e..4155d4d9a4 100644 --- a/drivers/mtd/spi/macronix.c +++ b/drivers/mtd/spi/macronix.c @@ -112,26 +112,6 @@ static const struct macronix_spi_flash_params macronix_spi_flash_table[] = { }, }; -static int macronix_read_fast(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct macronix_spi_flash *mcx = to_macronix_spi_flash(flash); - unsigned long page_addr; - unsigned long page_size; - u8 cmd[5]; - - page_size = mcx->params->page_size; - page_addr = offset / page_size; - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[1] = page_addr >> 8; - cmd[2] = page_addr; - cmd[3] = offset % page_size; - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int macronix_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { @@ -234,7 +214,7 @@ struct spi_flash *spi_flash_probe_macronix(struct spi_slave *spi, u8 *idcode) mcx->flash.write = macronix_write; mcx->flash.erase = macronix_erase; - mcx->flash.read = macronix_read_fast; + mcx->flash.read = spi_flash_cmd_read_fast; mcx->flash.size = params->page_size * params->pages_per_sector * params->sectors_per_block * params->nr_blocks; diff --git a/drivers/mtd/spi/spansion.c b/drivers/mtd/spi/spansion.c index be4fc67ef7..d54a5fad23 100644 --- a/drivers/mtd/spi/spansion.c +++ b/drivers/mtd/spi/spansion.c @@ -133,30 +133,6 @@ static const struct spansion_spi_flash_params spansion_spi_flash_table[] = { }, }; -static int spansion_read_fast(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct spansion_spi_flash *spsn = to_spansion_spi_flash(flash); - unsigned long page_addr; - unsigned long page_size; - u8 cmd[5]; - - page_size = spsn->params->page_size; - page_addr = offset / page_size; - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[1] = page_addr >> 8; - cmd[2] = page_addr; - cmd[3] = offset % page_size; - cmd[4] = 0x00; - - debug - ("READ: 0x%x => cmd = { 0x%02x 0x%02x%02x%02x%02x } len = 0x%x\n", - offset, cmd[0], cmd[1], cmd[2], cmd[3], cmd[4], len); - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int spansion_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { @@ -263,7 +239,7 @@ struct spi_flash *spi_flash_probe_spansion(struct spi_slave *spi, u8 *idcode) spsn->flash.write = spansion_write; spsn->flash.erase = spansion_erase; - spsn->flash.read = spansion_read_fast; + spsn->flash.read = spi_flash_cmd_read_fast; spsn->flash.size = params->page_size * params->pages_per_sector * params->nr_sectors; diff --git a/drivers/mtd/spi/spi_flash.c b/drivers/mtd/spi/spi_flash.c index ca4bbb206a..5c261f14a6 100644 --- a/drivers/mtd/spi/spi_flash.c +++ b/drivers/mtd/spi/spi_flash.c @@ -77,6 +77,18 @@ int spi_flash_read_common(struct spi_flash *flash, const u8 *cmd, return ret; } +int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, + size_t len, void *data) +{ + u8 cmd[5]; + + cmd[0] = CMD_READ_ARRAY_FAST; + spi_flash_addr(offset, cmd); + cmd[4] = 0x00; + + return spi_flash_read_common(flash, cmd, sizeof(cmd), data, len); +} + int spi_flash_cmd_poll_bit(struct spi_flash *flash, unsigned long timeout, u8 cmd, u8 poll_bit) { diff --git a/drivers/mtd/spi/spi_flash_internal.h b/drivers/mtd/spi/spi_flash_internal.h index 114b63459a..d7bcd6d6af 100644 --- a/drivers/mtd/spi/spi_flash_internal.h +++ b/drivers/mtd/spi/spi_flash_internal.h @@ -35,6 +35,9 @@ int spi_flash_cmd(struct spi_slave *spi, u8 cmd, void *response, size_t len); int spi_flash_cmd_read(struct spi_slave *spi, const u8 *cmd, size_t cmd_len, void *data, size_t data_len); +int spi_flash_cmd_read_fast(struct spi_flash *flash, u32 offset, + size_t len, void *data); + /* * Send a multi-byte command to the device followed by (optional) * data. Used for programming the flash array, etc. diff --git a/drivers/mtd/spi/sst.c b/drivers/mtd/spi/sst.c index d55055035c..792d04dd2b 100644 --- a/drivers/mtd/spi/sst.c +++ b/drivers/mtd/spi/sst.c @@ -107,19 +107,6 @@ sst_disable_writing(struct spi_flash *flash) return ret; } -static int -sst_read_fast(struct spi_flash *flash, u32 offset, size_t len, void *buf) -{ - u8 cmd[5] = { - CMD_READ_ARRAY_FAST, - offset >> 16, - offset >> 8, - offset, - 0x00, - }; - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int sst_byte_write(struct spi_flash *flash, u32 offset, const void *buf) { @@ -269,7 +256,6 @@ spi_flash_probe_sst(struct spi_slave *spi, u8 *idcode) stm->flash.write = sst_write; stm->flash.erase = sst_erase; - stm->flash.read = sst_read_fast; stm->flash.size = SST_SECTOR_SIZE * params->nr_sectors; printf("SF: Detected %s with page size %u, total ", diff --git a/drivers/mtd/spi/stmicro.c b/drivers/mtd/spi/stmicro.c index 494005c4a4..7ef690d9bf 100644 --- a/drivers/mtd/spi/stmicro.c +++ b/drivers/mtd/spi/stmicro.c @@ -134,26 +134,6 @@ static const struct stmicro_spi_flash_params stmicro_spi_flash_table[] = { }, }; -static int stmicro_read_fast(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct stmicro_spi_flash *stm = to_stmicro_spi_flash(flash); - unsigned long page_addr; - unsigned long page_size; - u8 cmd[5]; - - page_size = stm->params->page_size; - page_addr = offset / page_size; - - cmd[0] = CMD_READ_ARRAY_FAST; - cmd[1] = page_addr >> 8; - cmd[2] = page_addr; - cmd[3] = offset % page_size; - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int stmicro_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { @@ -268,7 +248,7 @@ struct spi_flash *spi_flash_probe_stmicro(struct spi_slave *spi, u8 * idcode) stm->flash.write = stmicro_write; stm->flash.erase = stmicro_erase; - stm->flash.read = stmicro_read_fast; + stm->flash.read = spi_flash_cmd_read_fast; stm->flash.size = params->page_size * params->pages_per_sector * params->nr_sectors; diff --git a/drivers/mtd/spi/winbond.c b/drivers/mtd/spi/winbond.c index 8470a826bf..e88802f0e6 100644 --- a/drivers/mtd/spi/winbond.c +++ b/drivers/mtd/spi/winbond.c @@ -105,44 +105,6 @@ static const struct winbond_spi_flash_params winbond_spi_flash_table[] = { }, }; -/* - * Assemble the address part of a command for Winbond devices in - * non-power-of-two page size mode. - */ -static void winbond_build_address(struct winbond_spi_flash *stm, u8 *cmd, u32 offset) -{ - unsigned long page_addr; - unsigned long byte_addr; - unsigned long page_size; - unsigned int page_shift; - - /* - * The "extra" space per page is the power-of-two page size - * divided by 32. - */ - page_shift = stm->params->l2_page_size; - page_size = (1 << page_shift); - page_addr = offset / page_size; - byte_addr = offset % page_size; - - cmd[0] = page_addr >> (16 - page_shift); - cmd[1] = page_addr << (page_shift - 8) | (byte_addr >> 8); - cmd[2] = byte_addr; -} - -static int winbond_read_fast(struct spi_flash *flash, - u32 offset, size_t len, void *buf) -{ - struct winbond_spi_flash *stm = to_winbond_spi_flash(flash); - u8 cmd[5]; - - cmd[0] = CMD_READ_ARRAY_FAST; - winbond_build_address(stm, cmd + 1, offset); - cmd[4] = 0x00; - - return spi_flash_read_common(flash, cmd, sizeof(cmd), buf, len); -} - static int winbond_write(struct spi_flash *flash, u32 offset, size_t len, const void *buf) { @@ -250,7 +212,7 @@ struct spi_flash *spi_flash_probe_winbond(struct spi_slave *spi, u8 *idcode) stm->flash.write = winbond_write; stm->flash.erase = winbond_erase; - stm->flash.read = winbond_read_fast; + stm->flash.read = spi_flash_cmd_read_fast; stm->flash.size = page_size * params->pages_per_sector * params->sectors_per_block * params->nr_blocks; -- 2.25.1