diff options
Diffstat (limited to 'src/drivers/spi')
| -rw-r--r-- | src/drivers/spi/Makefile.inc | 5 | ||||
| -rw-r--r-- | src/drivers/spi/spi-generic.c | 43 |
2 files changed, 48 insertions, 0 deletions
diff --git a/src/drivers/spi/Makefile.inc b/src/drivers/spi/Makefile.inc index 92baf62bc3..c1bf307cc5 100644 --- a/src/drivers/spi/Makefile.inc +++ b/src/drivers/spi/Makefile.inc @@ -7,6 +7,7 @@ ramstage-y += spiconsole.c smm-$(CONFIG_DEBUG_SMI) += spiconsole.c endif +bootblock-y += spi-generic.c bootblock-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c bootblock-$(CONFIG_SPI_FLASH) += spi_flash.c bootblock-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c @@ -22,6 +23,7 @@ bootblock-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c bootblock-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c bootblock-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c +romstage-y += spi-generic.c romstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c romstage-$(CONFIG_SPI_FLASH) += spi_flash.c romstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c @@ -37,6 +39,7 @@ romstage-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c romstage-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c romstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c +verstage-y += spi-generic.c verstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c verstage-$(CONFIG_SPI_FLASH) += spi_flash.c verstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP_EARLY) += boot_device_rw_nommap.c @@ -52,6 +55,7 @@ verstage-$(CONFIG_SPI_FLASH_STMICRO) += stmicro.c verstage-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c verstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c +ramstage-y += spi-generic.c ramstage-$(CONFIG_COMMON_CBFS_SPI_WRAPPER) += cbfs_spi.c ramstage-$(CONFIG_SPI_FLASH) += spi_flash.c ramstage-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP) += boot_device_rw_nommap.c @@ -68,6 +72,7 @@ ramstage-$(CONFIG_SPI_FLASH_WINBOND) += winbond.c ramstage-$(CONFIG_SPI_FRAM_RAMTRON) += ramtron.c ifeq ($(CONFIG_SPI_FLASH_SMM),y) +smm-y += spi-generic.c # SPI flash driver interface smm-$(CONFIG_SPI_FLASH) += spi_flash.c smm-$(CONFIG_BOOT_DEVICE_SPI_FLASH_RW_NOMMAP) += boot_device_rw_nommap.c diff --git a/src/drivers/spi/spi-generic.c b/src/drivers/spi/spi-generic.c new file mode 100644 index 0000000000..7398ee928f --- /dev/null +++ b/src/drivers/spi/spi-generic.c @@ -0,0 +1,43 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2016 Google Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <spi-generic.h> +#include <string.h> + +int spi_claim_bus(const struct spi_slave *slave) +{ + const struct spi_ctrlr *ctrlr = slave->ctrlr; + if (ctrlr && ctrlr->claim_bus) + return ctrlr->claim_bus(slave); + return 0; +} + +void spi_release_bus(const struct spi_slave *slave) +{ + const struct spi_ctrlr *ctrlr = slave->ctrlr; + if (ctrlr && ctrlr->release_bus) + ctrlr->release_bus(slave); +} + +int spi_xfer(const struct spi_slave *slave, const void *dout, size_t bytesout, + void *din, size_t bytesin) +{ + const struct spi_ctrlr *ctrlr = slave->ctrlr; + if (ctrlr && ctrlr->xfer) + return ctrlr->xfer(slave, dout, bytesout, din, bytesin); + + return -1; +} |