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authorFurquan Shaikh <furquan@chromium.org>2017-02-11 11:06:19 -0800
committerFurquan Shaikh <furquan@google.com>2017-02-16 08:42:08 +0100
commit0de80da24cc39003f61f86452f46c9b48c95ae4d (patch)
tree05dc491b12f44adc9a31a3b7d027fc32045d54a7 /src/soc/intel
parent4e084796886259133d9226c40822e44599a41302 (diff)
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>
Diffstat (limited to 'src/soc/intel')
-rw-r--r--src/soc/intel/skylake/include/soc/pci_devs.h10
-rw-r--r--src/soc/intel/skylake/spi.c37
2 files changed, 47 insertions, 0 deletions
diff --git a/src/soc/intel/skylake/include/soc/pci_devs.h b/src/soc/intel/skylake/include/soc/pci_devs.h
index 974f1d8e19..a19a7c6007 100644
--- a/src/soc/intel/skylake/include/soc/pci_devs.h
+++ b/src/soc/intel/skylake/include/soc/pci_devs.h
@@ -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
diff --git a/src/soc/intel/skylake/spi.c b/src/soc/intel/skylake/spi.c
index ddff4dcbcd..4a2ae9d8b8 100644
--- a/src/soc/intel/skylake/spi.c
+++ b/src/soc/intel/skylake/spi.c
@@ -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