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soc/intel/skylake: Add support for SPI device 

Add a new PCI driver for SPI devices with supported PCI ids. Also,
provide a translation table to convert struct device structure into SPI
bus number.

BUG=chrome-os-partner:59832
BRANCH=None
TEST=Compiles successfully

Change-Id: If860eb819f2ce5ae5443f808b356af57f86c52be
Signed-off-by: Furquan Shaikh <furquan@chromium.org>
Reviewed-on: https://review.coreboot.org/18341
Tested-by: build bot (Jenkins)
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Furquan Shaikh 2017-02-11 11:06:19 -08:00 committed by Furquan Shaikh
parent 4e08479688
commit 0de80da24c
2 changed files with 47 additions and 0 deletions
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10
src/soc/intel/skylake/include/soc/pci_devs.h
View File

@ -176,4 +176,14 @@ static inline int i2c_devfn_to_bus(unsigned devfn)
return -1;
}
static inline int spi_devfn_to_bus(unsigned devfn)
{
switch (devfn) {
case PCH_DEVFN_SPI: return 0;
case PCH_DEVFN_GSPI0: return 1;
case PCH_DEVFN_GSPI1: return 2;
}
return -1;
}
#endif

37
src/soc/intel/skylake/spi.c
View File

@ -15,6 +15,12 @@
*/
#include <console/console.h>
#include <device/device.h>
#include <device/pci.h>
#include <device/pci_def.h>
#include <device/pci_ids.h>
#include <device/spi.h>
#include <soc/ramstage.h>
#include <spi-generic.h>
/* SPI controller managing the flash-device SPI. */
@ -61,3 +67,34 @@ const struct spi_ctrlr_buses spi_ctrlr_bus_map[] = {
};
const size_t spi_ctrlr_bus_map_count = ARRAY_SIZE(spi_ctrlr_bus_map);
#if ENV_RAMSTAGE && !defined(__SIMPLE_DEVICE__)
static int spi_dev_to_bus(struct device *dev)
{
return spi_devfn_to_bus(dev->path.pci.devfn);
}
static struct spi_bus_operations spi_bus_ops = {
.dev_to_bus = &spi_dev_to_bus,
};
static struct device_operations spi_dev_ops = {
.read_resources = &pci_dev_read_resources,
.set_resources = &pci_dev_set_resources,
.enable_resources = &pci_dev_enable_resources,
.scan_bus = &scan_generic_bus,
.ops_pci = &soc_pci_ops,
.ops_spi_bus = &spi_bus_ops,
};
static const unsigned short pci_device_ids[] = {
0x9d24, 0x9d29, 0x9d2a, 0
};
static const struct pci_driver pch_spi __pci_driver = {
.ops = &spi_dev_ops,
.vendor = PCI_VENDOR_ID_INTEL,
.devices = pci_device_ids,
};
#endif