From 94f8699d447ef94df339d318b836b664273e89ff Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Thu, 1 Dec 2016 07:12:32 -0800 Subject: spi: Define and use spi_ctrlr structure 1. Define a new structure spi_ctrlr that allows platforms to define callbacks for spi operations (claim bus, release bus, transfer). 2. Add a new member (pointer to spi_ctrlr structure) in spi_slave structure which will be initialized by call to spi_setup_slave. 3. Define spi_claim_bus, spi_release_bus and spi_xfer in spi-generic.c which will make appropriate calls to ctrlr functions. BUG=chrome-os-partner:59832 BRANCH=None TEST=Compiles successfully Change-Id: Icb2326e3aab1e8f4bef53f553f82b3836358c55e Signed-off-by: Furquan Shaikh Reviewed-on: https://review.coreboot.org/17684 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin --- src/soc/intel/skylake/flash_controller.c | 19 +------------------ 1 file changed, 1 insertion(+), 18 deletions(-) (limited to 'src/soc/intel/skylake') diff --git a/src/soc/intel/skylake/flash_controller.c b/src/soc/intel/skylake/flash_controller.c index 734d9d3532..e0ac93da03 100644 --- a/src/soc/intel/skylake/flash_controller.c +++ b/src/soc/intel/skylake/flash_controller.c @@ -151,13 +151,6 @@ static size_t spi_get_flash_size(pch_spi_regs *spi_bar) return size; } -int spi_xfer(const struct spi_slave *slave, const void *dout, - size_t bytesout, void *din, size_t bytesin) -{ - /* TODO: Define xfer for hardware sequencing. */ - return -1; -} - void spi_init(void) { uint8_t bios_cntl; @@ -170,17 +163,6 @@ void spi_init(void) pci_write_config_byte(dev, SPIBAR_BIOS_CNTL, bios_cntl); } -int spi_claim_bus(const struct spi_slave *slave) -{ - /* Handled by PCH automatically. */ - return 0; -} - -void spi_release_bus(const struct spi_slave *slave) -{ - /* Handled by PCH automatically. */ -} - int pch_hwseq_erase(const struct spi_flash *flash, u32 offset, size_t len) { u32 start, end, erase_size; @@ -377,6 +359,7 @@ int spi_setup_slave(unsigned int bus, unsigned int cs, struct spi_slave *slave) slave->bus = bus; slave->cs = cs; + slave->ctrlr = NULL; return 0; } -- cgit v1.2.3