- Shrink spi_slave {} - Shrink spi_flash_params {} - Documentation for sf features

Signed-off-by: Jagannadha Sutradharudu Teki jaganna@xilinx.com --- doc/SPI/README.sf-features | 121 +++++++++++++++++++++++++++++ drivers/mtd/spi/sf.c | 4 +- drivers/mtd/spi/sf_internal.h | 1 - drivers/mtd/spi/sf_ops.c | 8 +- drivers/mtd/spi/sf_params.c | 172 +++++++++++++++++++++--------------------- drivers/mtd/spi/sf_probe.c | 71 ++++++++--------- include/spi.h | 42 ++++------- include/spi_flash.h | 34 ++++----- 8 files changed, 272 insertions(+), 181 deletions(-) create mode 100644 doc/SPI/README.sf-features

diff --git a/doc/SPI/README.sf-features b/doc/SPI/README.sf-features new file mode 100644 index 0000000..e203bc0 --- /dev/null +++ b/doc/SPI/README.sf-features @@ -0,0 +1,121 @@ +SPI FLASH feature enhancements: +============================== + +This document describes how to extend the current data structures in spi subsystem +for making use of new flash features/operations w.r.t to controller driver support. + +1. spi_slave: + +struct spi_slave { + .......... + u32 mode; + ........ +}; + +@mode can be used to expose the SPI RX/TX operation modes, bus options and +few flags which are used to extended the flash specific features/operations +- include/spi.h + +mode: +- SPI_TX_QPP: 4-wire tx transfer +- SPI_RX_SLOW: 1-wire rx transfer +- SPI_RX_DUAL: 2-wire rx transfer +- SPI_RX_DUAL_IO: 2-wire io rx transfer +- SPI_RX_QUAD: 4-wire rx transfer +- SPI_RX_QUAD_IO: 4-wire io rx transfer +- SPI_SHARED: bus shared with two slaves +- SPI_SEPARATED: bus parallel with two slaves +- SPI_U_PAGE: access second slave in bus shared + +2. spi_flash_params: + +struct spi_flash_params { + ................ + u16 flags; + .............. +}; + +@flags can be use to verify the flash supported features/operations with respect +to controller driven through @mode and also some internal flash specific +operations - include/spi_flash.h + +flags: +- SST_WP: SST flash write protection +- SECT_4K: 4K erase sector +- SECT_32K: 32 erase sector +- E_FSR: Flag status register for erase/write for micron < 256MB flash +- WR_QPP: Quad page program +- RD_SLOW: Array slow read +- RD_DUAL: Dual fast read +- RD_DUAL_IO: Dual IO read +- RD_QUAD: Quad fast read +- RD_QUAD_IO: Quad IO read +- RD_2WIRE: All 2-wire read commands +- RD_FULL: All read commands +- ALL_CMDS: All read and write commands [1] + +3. spi_flash: + +struct spi_flash { + ............... + u8 dual_flash; + u8 shift; + u8 poll_cmd; + u8 erase_cmd; + u8 read_cmd; + u8 write_cmd; + u8 dummy_byte; + ................ +}; + +Few varibles from spi_flash {} can be used to perform the internal operations +based on the selected flash features/operations from spi_slave {} and +spi_flash_params {} - include/spi_flash.h + +@dual_flash: flash can be operated in dual flash [2] +@shift: variable shift operator useful for dual parallel +@poll_cmd: find the read_status or flag_status for polling erase/write operations +@erase_cmd: discovered erase command +@read_cmd: discovered read command +@write_cmd: discovered write command +@dummy_byte: read dummy_byte based on read dummy_cycles. + +dummy byte is determined based on the dummy cycles of a particular command. +Fast commands - dummy_byte = dummy_cycles/8 +I/O commands- dummy_byte = (dummy_cycles * no.of lines)/8 +For I/O commands except cmd[0] everything goes on no.of lines based on +particular command but in case of fast commands except data all go on +single line irrespective of command. + +4. Usage: + +In drivers/spi/*.c assign spi_slave {} with supported features through mode. +Ex: drivers/spi/ti_qspi.c + +struct ti_qspi_slave { + ................ + struct spi_slave slave; + .............. +} + +struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs, + unsigned int max_hz, unsigned int mode) +{ + ......... + + qslave = spi_alloc_slave(struct ti_qspi_slave, bus, cs); + if (!qslave) { + printf("SPI_error: Fail to allocate ti_qspi_slave\n"); + return NULL; + } + + qslave->slave.mode = SPI_TX_QPP | SPI_RX_QUAD; + ........ +} + +[1] http://www.spansion.com/Support/Datasheets/S25FL128S_256S_00.pdf +[2] doc/SPI/README.dual-flash + +-- +Jagannadha Sutradharudu Teki jaganna@xilinx.com +Sat Jan 18 14:44:28 IST 2014 diff --git a/drivers/mtd/spi/sf.c b/drivers/mtd/spi/sf.c index 664e860..b4d7e6c 100644 --- a/drivers/mtd/spi/sf.c +++ b/drivers/mtd/spi/sf.c @@ -19,8 +19,8 @@ static int spi_flash_read_write(struct spi_slave *spi, int ret;

#ifdef CONFIG_SF_DUAL_FLASH - if (spi->flags & SPI_XFER_U_PAGE) - flags |= SPI_XFER_U_PAGE; + if (spi->mode & SPI_U_PAGE) + flags |= SPI_U_PAGE; #endif if (data_len == 0) flags |= SPI_XFER_END; diff --git a/drivers/mtd/spi/sf_internal.h b/drivers/mtd/spi/sf_internal.h index 6bcd522..47d5ac2 100644 --- a/drivers/mtd/spi/sf_internal.h +++ b/drivers/mtd/spi/sf_internal.h @@ -67,7 +67,6 @@

/* SST specific */ #ifdef CONFIG_SPI_FLASH_SST -# define SST_WP 0x01 /* Supports AAI word program */ # define CMD_SST_BP 0x02 /* Byte Program */ # define CMD_SST_AAI_WP 0xAD /* Auto Address Incr Word Program */

diff --git a/drivers/mtd/spi/sf_ops.c b/drivers/mtd/spi/sf_ops.c index ef91b92..20adeb9 100644 --- a/drivers/mtd/spi/sf_ops.c +++ b/drivers/mtd/spi/sf_ops.c @@ -139,9 +139,9 @@ static void spi_flash_dual_flash(struct spi_flash *flash, u32 *addr) case SF_DUAL_STACKED_FLASH: if (*addr >= (flash->size >> 1)) { *addr -= flash->size >> 1; - flash->spi->flags |= SPI_XFER_U_PAGE; + flash->spi->mode |= SPI_U_PAGE; } else { - flash->spi->flags &= ~SPI_XFER_U_PAGE; + flash->spi->mode &= ~SPI_U_PAGE; } break; case SF_DUAL_PARALLEL_FLASH: @@ -171,8 +171,8 @@ int spi_flash_cmd_wait_ready(struct spi_flash *flash, unsigned long timeout) }

#ifdef CONFIG_SF_DUAL_FLASH - if (spi->flags & SPI_XFER_U_PAGE) - flags |= SPI_XFER_U_PAGE; + if (spi->mode & SPI_U_PAGE) + flags |= SPI_U_PAGE; #endif ret = spi_xfer(spi, 8, &cmd, NULL, flags); if (ret) { diff --git a/drivers/mtd/spi/sf_params.c b/drivers/mtd/spi/sf_params.c index eb372b7..9b394f2 100644 --- a/drivers/mtd/spi/sf_params.c +++ b/drivers/mtd/spi/sf_params.c @@ -14,106 +14,106 @@ /* SPI/QSPI flash device params structure */ const struct spi_flash_params spi_flash_params_table[] = { #ifdef CONFIG_SPI_FLASH_ATMEL /* ATMEL */ - {"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, 0, SECT_4K}, - {"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, 0, SECT_4K}, - {"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, 0, SECT_4K}, - {"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, 0, SECT_4K}, - {"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, 0, SECT_4K}, - {"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, 0, SECT_4K}, - {"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, 0, SECT_4K}, - {"AT25DF321", 0x1f4701, 0x0, 64 * 1024, 64, 0, SECT_4K}, + {"AT45DB011D", 0x1f2200, 0x0, 64 * 1024, 4, SECT_4K}, + {"AT45DB021D", 0x1f2300, 0x0, 64 * 1024, 8, SECT_4K}, + {"AT45DB041D", 0x1f2400, 0x0, 64 * 1024, 8, SECT_4K}, + {"AT45DB081D", 0x1f2500, 0x0, 64 * 1024, 16, SECT_4K}, + {"AT45DB161D", 0x1f2600, 0x0, 64 * 1024, 32, SECT_4K}, + {"AT45DB321D", 0x1f2700, 0x0, 64 * 1024, 64, SECT_4K}, + {"AT45DB641D", 0x1f2800, 0x0, 64 * 1024, 128, SECT_4K}, + {"AT25DF321", 0x1f4701, 0x0, 64 * 1024, 64, SECT_4K}, #endif #ifdef CONFIG_SPI_FLASH_EON /* EON */ - {"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0, 0}, - {"EN25Q64", 0x1c3017, 0x0, 64 * 1024, 128, 0, SECT_4K}, - {"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0, 0}, - {"EN25S64", 0x1c3817, 0x0, 64 * 1024, 128, 0, 0}, + {"EN25Q32B", 0x1c3016, 0x0, 64 * 1024, 64, 0}, + {"EN25Q64", 0x1c3017, 0x0, 64 * 1024, 128, SECT_4K}, + {"EN25Q128B", 0x1c3018, 0x0, 64 * 1024, 256, 0}, + {"EN25S64", 0x1c3817, 0x0, 64 * 1024, 128, 0}, #endif #ifdef CONFIG_SPI_FLASH_GIGADEVICE /* GIGADEVICE */ - {"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, 0, SECT_4K}, - {"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, 0, SECT_4K}, + {"GD25Q64B", 0xc84017, 0x0, 64 * 1024, 128, SECT_4K}, + {"GD25LQ32", 0xc86016, 0x0, 64 * 1024, 64, SECT_4K}, #endif #ifdef CONFIG_SPI_FLASH_MACRONIX /* MACRONIX */ - {"MX25L2006E", 0xc22012, 0x0, 64 * 1024, 4, 0, 0}, - {"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0, 0}, - {"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0, 0}, - {"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0, 0}, - {"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0, 0}, - {"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0, 0}, - {"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP}, - {"MX25L25635F", 0xc22019, 0x0, 64 * 1024, 512, RD_FULL, WR_QPP}, - {"MX25L51235F", 0xc2201a, 0x0, 64 * 1024, 1024, RD_FULL, WR_QPP}, - {"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP}, + {"MX25L2006E", 0xc22012, 0x0, 64 * 1024, 4, 0}, + {"MX25L4005", 0xc22013, 0x0, 64 * 1024, 8, 0}, + {"MX25L8005", 0xc22014, 0x0, 64 * 1024, 16, 0}, + {"MX25L1605D", 0xc22015, 0x0, 64 * 1024, 32, 0}, + {"MX25L3205D", 0xc22016, 0x0, 64 * 1024, 64, 0}, + {"MX25L6405D", 0xc22017, 0x0, 64 * 1024, 128, 0}, + {"MX25L12805", 0xc22018, 0x0, 64 * 1024, 256, ALL_CMDS}, + {"MX25L25635F", 0xc22019, 0x0, 64 * 1024, 512, ALL_CMDS}, + {"MX25L51235F", 0xc2201a, 0x0, 64 * 1024, 1024, ALL_CMDS}, + {"MX25L12855E", 0xc22618, 0x0, 64 * 1024, 256, ALL_CMDS}, #endif #ifdef CONFIG_SPI_FLASH_SPANSION /* SPANSION */ - {"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0, 0}, - {"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0, 0}, - {"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0, 0}, - {"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0, 0}, - {"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, RD_FULL, WR_QPP}, - {"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, RD_FULL, WR_QPP}, - {"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, RD_FULL, WR_QPP}, - {"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, RD_FULL, WR_QPP}, - {"S25FL128S_256K", 0x012018, 0x4d00, 256 * 1024, 64, RD_FULL, WR_QPP}, - {"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, RD_FULL, WR_QPP}, - {"S25FL256S_256K", 0x010219, 0x4d00, 256 * 1024, 128, RD_FULL, WR_QPP}, - {"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, RD_FULL, WR_QPP}, - {"S25FL512S_256K", 0x010220, 0x4d00, 256 * 1024, 256, RD_FULL, WR_QPP}, - {"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, RD_FULL, WR_QPP}, + {"S25FL008A", 0x010213, 0x0, 64 * 1024, 16, 0}, + {"S25FL016A", 0x010214, 0x0, 64 * 1024, 32, 0}, + {"S25FL032A", 0x010215, 0x0, 64 * 1024, 64, 0}, + {"S25FL064A", 0x010216, 0x0, 64 * 1024, 128, 0}, + {"S25FL128P_256K", 0x012018, 0x0300, 256 * 1024, 64, ALL_CMDS}, + {"S25FL128P_64K", 0x012018, 0x0301, 64 * 1024, 256, ALL_CMDS}, + {"S25FL032P", 0x010215, 0x4d00, 64 * 1024, 64, ALL_CMDS}, + {"S25FL064P", 0x010216, 0x4d00, 64 * 1024, 128, ALL_CMDS}, + {"S25FL128S_256K", 0x012018, 0x4d00, 256 * 1024, 64, ALL_CMDS}, + {"S25FL128S_64K", 0x012018, 0x4d01, 64 * 1024, 256, ALL_CMDS}, + {"S25FL256S_256K", 0x010219, 0x4d00, 256 * 1024, 128, ALL_CMDS}, + {"S25FL256S_64K", 0x010219, 0x4d01, 64 * 1024, 512, ALL_CMDS}, + {"S25FL512S_256K", 0x010220, 0x4d00, 256 * 1024, 256, ALL_CMDS}, + {"S25FL512S_64K", 0x010220, 0x4d01, 64 * 1024, 1024, ALL_CMDS}, #endif #ifdef CONFIG_SPI_FLASH_STMICRO /* STMICRO */ - {"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0, 0}, - {"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0, 0}, - {"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0, 0}, - {"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0, 0}, - {"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0, 0}, - {"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0, 0}, - {"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0, 0}, - {"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0, 0}, - {"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP}, - {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP}, - {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, RD_FULL, WR_QPP | SECT_4K}, - {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, RD_FULL, WR_QPP | E_FSR | SECT_4K}, - {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, RD_FULL, WR_QPP | E_FSR | SECT_4K}, - {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, RD_FULL, WR_QPP | E_FSR | SECT_4K}, - {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, RD_FULL, WR_QPP | E_FSR | SECT_4K}, + {"M25P10", 0x202011, 0x0, 32 * 1024, 4, 0}, + {"M25P20", 0x202012, 0x0, 64 * 1024, 4, 0}, + {"M25P40", 0x202013, 0x0, 64 * 1024, 8, 0}, + {"M25P80", 0x202014, 0x0, 64 * 1024, 16, 0}, + {"M25P16", 0x202015, 0x0, 64 * 1024, 32, 0}, + {"M25P32", 0x202016, 0x0, 64 * 1024, 64, 0}, + {"M25P64", 0x202017, 0x0, 64 * 1024, 128, 0}, + {"M25P128", 0x202018, 0x0, 256 * 1024, 64, 0}, + {"N25Q32", 0x20ba16, 0x0, 64 * 1024, 64, ALL_CMDS | SECT_4K}, + {"N25Q32A", 0x20bb16, 0x0, 64 * 1024, 64, ALL_CMDS | SECT_4K}, + {"N25Q64", 0x20ba17, 0x0, 64 * 1024, 128, ALL_CMDS | SECT_4K}, + {"N25Q64A", 0x20bb17, 0x0, 64 * 1024, 128, ALL_CMDS | SECT_4K}, + {"N25Q128", 0x20ba18, 0x0, 64 * 1024, 256, ALL_CMDS}, + {"N25Q128A", 0x20bb18, 0x0, 64 * 1024, 256, ALL_CMDS}, + {"N25Q256", 0x20ba19, 0x0, 64 * 1024, 512, ALL_CMDS | SECT_4K}, + {"N25Q256A", 0x20bb19, 0x0, 64 * 1024, 512, ALL_CMDS | SECT_4K}, + {"N25Q512", 0x20ba20, 0x0, 64 * 1024, 1024, ALL_CMDS | E_FSR | SECT_4K}, + {"N25Q512A", 0x20bb20, 0x0, 64 * 1024, 1024, ALL_CMDS | E_FSR | SECT_4K}, + {"N25Q1024", 0x20ba21, 0x0, 64 * 1024, 2048, ALL_CMDS | E_FSR | SECT_4K}, + {"N25Q1024A", 0x20bb21, 0x0, 64 * 1024, 2048, ALL_CMDS | E_FSR | SECT_4K}, #endif #ifdef CONFIG_SPI_FLASH_SST /* SST */ - {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, 0, SECT_4K | SST_WP}, - {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, 0, SECT_4K | SST_WP}, - {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, 0, SECT_4K | SST_WP}, - {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, 0, SECT_4K | SST_WP}, - {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, 0, SECT_4K}, - {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, 0, SECT_4K | SST_WP}, - {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, 0, SECT_4K | SST_WP}, - {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, 0, SECT_4K | SST_WP}, - {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, 0, SECT_4K | SST_WP}, - {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, 0, SECT_4K | SST_WP}, + {"SST25VF040B", 0xbf258d, 0x0, 64 * 1024, 8, SECT_4K | SST_WP}, + {"SST25VF080B", 0xbf258e, 0x0, 64 * 1024, 16, SECT_4K | SST_WP}, + {"SST25VF016B", 0xbf2541, 0x0, 64 * 1024, 32, SECT_4K | SST_WP}, + {"SST25VF032B", 0xbf254a, 0x0, 64 * 1024, 64, SECT_4K | SST_WP}, + {"SST25VF064C", 0xbf254b, 0x0, 64 * 1024, 128, SECT_4K}, + {"SST25WF512", 0xbf2501, 0x0, 64 * 1024, 1, SECT_4K | SST_WP}, + {"SST25WF010", 0xbf2502, 0x0, 64 * 1024, 2, SECT_4K | SST_WP}, + {"SST25WF020", 0xbf2503, 0x0, 64 * 1024, 4, SECT_4K | SST_WP}, + {"SST25WF040", 0xbf2504, 0x0, 64 * 1024, 8, SECT_4K | SST_WP}, + {"SST25WF080", 0xbf2505, 0x0, 64 * 1024, 16, SECT_4K | SST_WP}, #endif #ifdef CONFIG_SPI_FLASH_WINBOND /* WINBOND */ - {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0, 0}, - {"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0, 0}, - {"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0, 0}, - {"W25X40", 0xef3013, 0x0, 64 * 1024, 8, 0, SECT_4K}, - {"W25X16", 0xef3015, 0x0, 64 * 1024, 32, 0, SECT_4K}, - {"W25X32", 0xef3016, 0x0, 64 * 1024, 64, 0, SECT_4K}, - {"W25X64", 0xef3017, 0x0, 64 * 1024, 128, 0, SECT_4K}, - {"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, RD_FULL, WR_QPP | SECT_4K}, - {"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, RD_FULL, WR_QPP | SECT_4K}, + {"W25P80", 0xef2014, 0x0, 64 * 1024, 16, 0}, + {"W25P16", 0xef2015, 0x0, 64 * 1024, 32, 0}, + {"W25P32", 0xef2016, 0x0, 64 * 1024, 64, 0}, + {"W25X40", 0xef3013, 0x0, 64 * 1024, 8, SECT_4K}, + {"W25X16", 0xef3015, 0x0, 64 * 1024, 32, SECT_4K}, + {"W25X32", 0xef3016, 0x0, 64 * 1024, 64, SECT_4K}, + {"W25X64", 0xef3017, 0x0, 64 * 1024, 128, SECT_4K}, + {"W25Q80BL", 0xef4014, 0x0, 64 * 1024, 16, ALL_CMDS | SECT_4K}, + {"W25Q16CL", 0xef4015, 0x0, 64 * 1024, 32, ALL_CMDS | SECT_4K}, + {"W25Q32BV", 0xef4016, 0x0, 64 * 1024, 64, ALL_CMDS | SECT_4K}, + {"W25Q64CV", 0xef4017, 0x0, 64 * 1024, 128, ALL_CMDS | SECT_4K}, + {"W25Q128BV", 0xef4018, 0x0, 64 * 1024, 256, ALL_CMDS | SECT_4K}, + {"W25Q256", 0xef4019, 0x0, 64 * 1024, 512, ALL_CMDS | SECT_4K}, + {"W25Q80BW", 0xef5014, 0x0, 64 * 1024, 16, ALL_CMDS | SECT_4K}, + {"W25Q16DW", 0xef6015, 0x0, 64 * 1024, 32, ALL_CMDS | SECT_4K}, + {"W25Q32DW", 0xef6016, 0x0, 64 * 1024, 64, ALL_CMDS | SECT_4K}, + {"W25Q64DW", 0xef6017, 0x0, 64 * 1024, 128, ALL_CMDS | SECT_4K}, + {"W25Q128FW", 0xef6018, 0x0, 64 * 1024, 256, ALL_CMDS | SECT_4K}, #endif /* * Note: diff --git a/drivers/mtd/spi/sf_probe.c b/drivers/mtd/spi/sf_probe.c index e84ab13..036f48d 100644 --- a/drivers/mtd/spi/sf_probe.c +++ b/drivers/mtd/spi/sf_probe.c @@ -19,15 +19,6 @@

DECLARE_GLOBAL_DATA_PTR;

-/* Read commands array */ -static u8 spi_read_cmds_array[] = { - CMD_READ_ARRAY_SLOW, - CMD_READ_DUAL_OUTPUT_FAST, - CMD_READ_DUAL_IO_FAST, - CMD_READ_QUAD_OUTPUT_FAST, - CMD_READ_QUAD_IO_FAST, -}; - #ifdef CONFIG_SPI_FLASH_MACRONIX static int spi_flash_set_qeb_mxic(struct spi_flash *flash) { @@ -100,7 +91,6 @@ static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi, { const struct spi_flash_params *params; struct spi_flash *flash; - u8 cmd; u16 jedec = idcode[1] << 8 | idcode[2]; u16 ext_jedec = idcode[3] << 8 | idcode[4];

@@ -136,13 +126,13 @@ static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi, flash->dual_flash = flash->spi->option;

/* Assign spi_flash ops */ + flash->read = spi_flash_cmd_read_ops; + flash->erase = spi_flash_cmd_erase_ops; flash->write = spi_flash_cmd_write_ops; #ifdef CONFIG_SPI_FLASH_SST if (params->flags & SST_WP) flash->write = sst_write_wp; #endif - flash->erase = spi_flash_cmd_erase_ops; - flash->read = spi_flash_cmd_read_ops;

/* Compute the flash size */ flash->shift = (flash->dual_flash & SF_DUAL_PARALLEL_FLASH) ? 1 : 0; @@ -166,18 +156,38 @@ static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi, flash->erase_size = flash->sector_size; }

- /* Look for the fastest read cmd */ - cmd = fls(params->e_rd_cmd & flash->spi->op_mode_rx); - if (cmd) { - cmd = spi_read_cmds_array[cmd - 1]; - flash->read_cmd = cmd; - } else { - /* Go for default supported read cmd */ - flash->read_cmd = CMD_READ_ARRAY_FAST; + /* Compute read command and dummy_byte */ + flash->read_cmd = CMD_READ_ARRAY_FAST; + flash->dummy_byte = 1; + switch (SPI_RX_MODES & flash->spi->mode) { + case SPI_RX_SLOW: + if (params->flags & RD_SLOW) { + flash->read_cmd = CMD_READ_ARRAY_FAST; + flash->dummy_byte = 0; + } + break; + case SPI_RX_DUAL: + if (params->flags & RD_DUAL) + flash->read_cmd = CMD_READ_DUAL_OUTPUT_FAST; + break; + case SPI_RX_DUAL_IO: + if (params->flags & RD_DUAL_IO) + flash->read_cmd = CMD_READ_DUAL_IO_FAST; + break; + case SPI_RX_QUAD: + if (params->flags & RD_QUAD) + flash->read_cmd = CMD_READ_QUAD_OUTPUT_FAST; + break; + case SPI_RX_QUAD_IO: + if (params->flags & RD_QUAD_IO) { + flash->read_cmd = CMD_READ_QUAD_IO_FAST; + flash->dummy_byte = 2; + } + break; }

/* Not require to look for fastest only two write cmds yet */ - if (params->flags & WR_QPP && flash->spi->op_mode_tx & SPI_OPM_TX_QPP) + if (flash->spi->mode & SPI_TX_QPP && params->flags & WR_QPP) flash->write_cmd = CMD_QUAD_PAGE_PROGRAM; else /* Go for default supported write cmd */ @@ -193,25 +203,6 @@ static struct spi_flash *spi_flash_validate_params(struct spi_slave *spi, } }

- /* Read dummy_byte: dummy byte is determined based on the - * dummy cycles of a particular command. - * Fast commands - dummy_byte = dummy_cycles/8 - * I/O commands- dummy_byte = (dummy_cycles * no.of lines)/8 - * For I/O commands except cmd[0] everything goes on no.of lines - * based on particular command but incase of fast commands except - * data all go on single line irrespective of command. - */ - switch (flash->read_cmd) { - case CMD_READ_QUAD_IO_FAST: - flash->dummy_byte = 2; - break; - case CMD_READ_ARRAY_SLOW: - flash->dummy_byte = 0; - break; - default: - flash->dummy_byte = 1; - } - /* Poll cmd selection */ flash->poll_cmd = CMD_READ_STATUS; #ifdef CONFIG_SPI_FLASH_STMICRO diff --git a/include/spi.h b/include/spi.h index ffd6647..2ca9631 100644 --- a/include/spi.h +++ b/include/spi.h @@ -30,29 +30,10 @@ #define SPI_XFER_MMAP 0x08 /* Memory Mapped start */ #define SPI_XFER_MMAP_END 0x10 /* Memory Mapped End */ #define SPI_XFER_ONCE (SPI_XFER_BEGIN | SPI_XFER_END) -#define SPI_XFER_U_PAGE (1 << 5) - -/* SPI TX operation modes */ -#define SPI_OPM_TX_QPP 1 << 0 - -/* SPI RX operation modes */ -#define SPI_OPM_RX_AS 1 << 0 -#define SPI_OPM_RX_DOUT 1 << 1 -#define SPI_OPM_RX_DIO 1 << 2 -#define SPI_OPM_RX_QOF 1 << 3 -#define SPI_OPM_RX_QIOF 1 << 4 -#define SPI_OPM_RX_EXTN SPI_OPM_RX_AS | SPI_OPM_RX_DOUT | \ - SPI_OPM_RX_DIO | SPI_OPM_RX_QOF | \ - SPI_OPM_RX_QIOF - -/* SPI bus connection options */ -#define SPI_CONN_DUAL_SHARED 1 << 0 -#define SPI_CONN_DUAL_SEPARATED 1 << 1

/* Header byte that marks the start of the message */ #define SPI_PREAMBLE_END_BYTE 0xec - -#define SPI_DEFAULT_WORDLEN 8 +#define SPI_DEFAULT_WORDLEN 8

/** * struct spi_slave - Representation of a SPI slave @@ -61,25 +42,30 @@ * * @bus: ID of the bus that the slave is attached to. * @cs: ID of the chip select connected to the slave. - * @op_mode_rx: SPI RX operation mode. - * @op_mode_tx: SPI TX operation mode. * @wordlen: Size of SPI word in number of bits * @max_write_size: If non-zero, the maximum number of bytes which can * be written at once, excluding command bytes. + * @mode: SPI RX/TX operation modes, bus options and few flags. * @memory_map: Address of read-only SPI flash access. - * @option: Varies SPI bus options - separate, shared bus. - * @flags: Indication of SPI flags. */ struct spi_slave { unsigned int bus; unsigned int cs; - u8 op_mode_rx; - u8 op_mode_tx; unsigned int wordlen; unsigned int max_write_size; + u16 mode; +#define SPI_TX_QPP (1 << 0) /* 4-wire tx transfer */ +#define SPI_RX_SLOW (1 << 1) /* 1-wire rx transfer */ +#define SPI_RX_DUAL (1 << 2) /* 2-wire rx transfer */ +#define SPI_RX_DUAL_IO (1 << 3) /* 2-wire io rx transfer */ +#define SPI_RX_QUAD (1 << 4) /* 4-wire rx transfer */ +#define SPI_RX_QUAD_IO (1 << 5) /* 4-wire io rx transfer */ +#define SPI_RX_MODES (SPI_RX_SLOW | SPI_RX_DUAL | SPI_RX_DUAL_IO | \ + SPI_RX_QUAD | SPI_RX_QUAD_IO) +#define SPI_SHARED (1 << 6) /* bus shared with two slaves */ +#define SPI_SEPARATED (1 << 7) /* bus parallel with two slaves */ +#define SPI_U_PAGE (1 << 8) /* access second slave in bus shared */ void *memory_map; - u8 option; - u8 flags; };

/** diff --git a/include/spi_flash.h b/include/spi_flash.h index f79f0ea..3a25da0 100644 --- a/include/spi_flash.h +++ b/include/spi_flash.h @@ -19,23 +19,6 @@ #include <linux/types.h> #include <linux/compiler.h>

-/* sf param flags */ -#define SECT_4K 1 << 1 -#define SECT_32K 1 << 2 -#define E_FSR 1 << 3 -#define WR_QPP 1 << 4 - -/* Enum list - Full read commands */ -enum spi_read_cmds { - ARRAY_SLOW = 1 << 0, - DUAL_OUTPUT_FAST = 1 << 1, - DUAL_IO_FAST = 1 << 2, - QUAD_OUTPUT_FAST = 1 << 3, - QUAD_IO_FAST = 1 << 4, -}; -#define RD_EXTN ARRAY_SLOW | DUAL_OUTPUT_FAST | DUAL_IO_FAST -#define RD_FULL RD_EXTN | QUAD_OUTPUT_FAST | QUAD_IO_FAST - /* Dual SPI flash memories */ enum spi_dual_flash { SF_SINGLE_FLASH = 0, @@ -51,8 +34,7 @@ enum spi_dual_flash { * @ext_jedec: Device ext_jedec ID * @sector_size: Sector size of this device * @nr_sectors: No.of sectors on this device - * @e_rd_cmd: Enum list for read commands - * @flags: Importent param, for flash specific behaviour + * @flags: Importent params, for flash specific behaviour */ struct spi_flash_params { const char *name; @@ -60,8 +42,20 @@ struct spi_flash_params { u16 ext_jedec; u32 sector_size; u32 nr_sectors; - u8 e_rd_cmd; u16 flags; +#define SST_WP (1 << 0) /* SST write protection */ +#define SECT_4K (1 << 1) /* 4K erase sector */ +#define SECT_32K (1 << 2) /* 32K erase sector */ +#define E_FSR (1 << 3) /* Enable Flag status register */ +#define WR_QPP (1 << 4) /* Quad page program */ +#define RD_SLOW (1 << 5) /* Array slow read */ +#define RD_DUAL (1 << 6) /* Dual fast read */ +#define RD_DUAL_IO (1 << 7) /* Dual IO fast read */ +#define RD_QUAD (1 << 8) /* Quad fast read */ +#define RD_QUAD_IO (1 << 9) /* Quad IO fast read */ +#define RD_2WIRE (RD_SLOW | RD_DUAL | RD_DUAL_IO) +#define RD_FULL (RD_2WIRE | RD_QUAD | RD_QUAD_IO) +#define ALL_CMDS (WR_QPP | RD_FULL) };

extern const struct spi_flash_params spi_flash_params_table[];