From a1491574ef2c91ff8b89df70feba67ad34836c75 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Wed, 17 May 2017 19:14:06 -0700 Subject: drivers/spi/spi_flash: Clean up SPI flash probe 1. Rename __spi_flash_probe to spi_flash_generic_probe and export it so that drivers can use it outside spi_flash.c. 2. Make southbridge intel spi driver use spi_flash_generic_probe if spi_is_multichip returns 0. 3. Add spi_flash_probe to spi_ctrlr structure to allow platforms to provide specialized probe functions. With this change, the specialized spi flash probe functions are now associated with a particular spi ctrlr structure and no longer disconnected from the spi controller. BUG=b:38330715 Change-Id: I35f3bd8ddc5e71515df3ef0c1c4b1a68ee56bf4b Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/19708 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin Reviewed-by: Julius Werner --- src/southbridge/intel/common/spi.c | 43 ++++++++++++++++++-------------------- 1 file changed, 20 insertions(+), 23 deletions(-) (limited to 'src/southbridge/intel/common') diff --git a/src/southbridge/intel/common/spi.c b/src/southbridge/intel/common/spi.c index 110c29c20d..79b1db7de7 100644 --- a/src/southbridge/intel/common/spi.c +++ b/src/southbridge/intel/common/spi.c @@ -653,20 +653,6 @@ static int spi_ctrlr_xfer(const struct spi_slave *slave, const void *dout, return 0; } -static const struct spi_ctrlr spi_ctrlr = { - .xfer = spi_ctrlr_xfer, - .xfer_vector = spi_xfer_two_vectors, - .max_xfer_size = member_size(ich9_spi_regs, fdata), -}; - -int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) -{ - slave->bus = bus; - slave->cs = cs; - slave->ctrlr = &spi_ctrlr; - return 0; -} - /* Sets FLA in FADDR to (addr & 0x01FFFFFF) without touching other bits. */ static void ich_hwseq_set_addr(uint32_t addr) { @@ -899,18 +885,14 @@ static int ich_hwseq_write(const struct spi_flash *flash, u32 addr, size_t len, return 0; } -int spi_flash_programmer_probe(const struct spi_slave *spi, - int force, struct spi_flash *flash) +static int spi_flash_programmer_probe(const struct spi_slave *spi, + struct spi_flash *flash) { uint32_t flcomp; - /* - * Perform SPI flash probing only if: - * 1. spi_is_multichip returns 1 or - * 2. Specialized probing is forced by SPI flash driver. - */ - if (!spi_is_multichip() && !force) - return -1; + /* Try generic probing first if spi_is_multichip returns 0. */ + if (!spi_is_multichip() && !spi_flash_generic_probe(spi, flash)) + return 0; memcpy(&flash->spi, spi, sizeof(*spi)); flash->name = "Opaque HW-sequencing"; @@ -946,3 +928,18 @@ int spi_flash_programmer_probe(const struct spi_slave *spi, return 0; } + +static const struct spi_ctrlr spi_ctrlr = { + .xfer = spi_ctrlr_xfer, + .xfer_vector = spi_xfer_two_vectors, + .max_xfer_size = member_size(ich9_spi_regs, fdata), + .flash_probe = spi_flash_programmer_probe, +}; + +int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) +{ + slave->bus = bus; + slave->cs = cs; + slave->ctrlr = &spi_ctrlr; + return 0; +} -- cgit v1.2.3