spi: ich: Support of-platdata for fast-spi

The Intel Fast SPI interface is similar to ICH. Add of-platdata support
for this using the "intel,fast-spi" compatible string.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>

diff --git a/drivers/spi/ich.c b/drivers/spi/ich.c
index 17b7a0b..7d66b90 100644 (file)
--- a/drivers/spi/ich.c
+++ b/drivers/spi/ich.c
@@ -10,6 +10,7 @@
 #include <common.h>
 #include <div64.h>
 #include <dm.h>
+#include <dt-structs.h>
 #include <errno.h>
 #include <malloc.h>
 #include <pch.h>
@@ -28,9 +29,13 @@
 #endif
 
 struct ich_spi_platdata {
+#if CONFIG_IS_ENABLED(OF_PLATDATA)
+       struct dtd_intel_fast_spi dtplat;
+#endif
        enum ich_version ich_version;   /* Controller version, 7 or 9 */
        bool lockdown;                  /* lock down controller settings? */
        ulong mmio_base;                /* Base of MMIO registers */
+       pci_dev_t bdf;                  /* PCI address used by of-platdata */
 };
 
 static u8 ich_readb(struct ich_spi_priv *priv, int reg)
@@ -594,6 +599,8 @@ static int ich_spi_child_pre_probe(struct udevice *dev)
 static int ich_spi_ofdata_to_platdata(struct udevice *dev)
 {
        struct ich_spi_platdata *plat = dev_get_platdata(dev);
+
+#if !CONFIG_IS_ENABLED(OF_PLATDATA)
        struct ich_spi_priv *priv = dev_get_priv(dev);
 
        /* Find a PCH if there is one */
@@ -603,8 +610,13 @@ static int ich_spi_ofdata_to_platdata(struct udevice *dev)
 
        plat->ich_version = dev_get_driver_data(dev);
        plat->lockdown = dev_read_bool(dev, "intel,spi-lock-down");
-
        pch_get_spi_base(priv->pch, &plat->mmio_base);
+#else
+       plat->ich_version = ICHV_APL;
+       plat->mmio_base = plat->dtplat.early_regs[0];
+       plat->bdf = pci_ofplat_get_devfn(plat->dtplat.reg[0]);
+#endif
+       debug("%s: mmio_base=%lx\n", __func__, plat->mmio_base);
 
        return 0;
 }
@@ -632,8 +644,8 @@ static const struct udevice_id ich_spi_ids[] = {
        { }
 };
 
-U_BOOT_DRIVER(ich_spi) = {
-       .name   = "ich_spi",
+U_BOOT_DRIVER(intel_fast_spi) = {
+       .name   = "intel_fast_spi",
        .id     = UCLASS_SPI,
        .of_match = ich_spi_ids,
        .ops    = &ich_spi_ops,