dm: x86: pci: Convert chromebook_link to use driver model for pci

Move chromebook_link over to driver model for PCI.

This involves:
- adding a uclass for platform controller hub
- removing most of the existing PCI driver
- adjusting how CPU init works to use driver model instead
- rename the lpc compatible string (it will be removed later)

This does not really take advantage of driver model fully, but it does work.
Furture work will improve the code structure to remove many of the explicit
calls to init the board.

Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 23 insertions, 1 deletions

diff --git a/arch/x86/cpu/ivybridge/bd82x6x.c b/arch/x86/cpu/ivybridge/bd82x6x.c
index 56b19e3..7b74282 100644
--- a/arch/x86/cpu/ivybridge/bd82x6x.c
+++ b/arch/x86/cpu/ivybridge/bd82x6x.c
@@ -5,6 +5,7 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <errno.h>
 #include <fdtdec.h>
 #include <malloc.h>
@@ -86,7 +87,7 @@ void bd82x6x_pci_bus_enable_resources(pci_dev_t dev)
 	bd82x6x_pci_dev_enable_resources(dev);
 }
 
-int bd82x6x_init_pci_devices(void)
+static int bd82x6x_probe(struct udevice *dev)
 {
 	const void *blob = gd->fdt_blob;
 	struct pci_controller *hose;
@@ -144,3 +145,24 @@ int bd82x6x_init(void)
 
 	return 0;
 }
+
+static const struct udevice_id bd82x6x_ids[] = {
+	{ .compatible = "intel,bd82x6x" },
+	{ }
+};
+
+U_BOOT_DRIVER(bd82x6x_drv) = {
+	.name		= "bd82x6x",
+	.id		= UCLASS_PCH,
+	.of_match	= bd82x6x_ids,
+	.probe		= bd82x6x_probe,
+};
+
+/*
+ * TODO(sjg@chromium.org): Move this to arch/x86/lib or similar when other
+ * boards also use a PCH
+ */
+UCLASS_DRIVER(pch) = {
+	.id		= UCLASS_PCH,
+	.name		= "pch",
+};