dm: Expand the uclass for Platform Controller Hubs (PCH)

A Platform Controller Hub is an Intel concept - it is like the peripherals
on an SoC and is often in a separate chip from the CPU. The chip is typically
found on the first PCI bus and integrates multiple devices.

We have a very simple uclass to support PCHs. Add a few operations, such as
setting up the devices on the PCH and finding the SPI controller base
address. Also move it into drivers/pch/ since we will be adding a few PCH
drivers.

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

2 files changed, 0 insertions, 31 deletions

diff --git a/arch/x86/lib/Makefile b/arch/x86/lib/Makefile
index cd5ecb6..43792bc 100644
--- a/arch/x86/lib/Makefile
+++ b/arch/x86/lib/Makefile
@@ -24,7 +24,6 @@ obj-$(CONFIG_I8254_TIMER) += i8254.o
 ifndef CONFIG_DM_PCI
 obj-$(CONFIG_PCI) += pci_type1.o
 endif
-obj-y	+= pch-uclass.o
 obj-y	+= pirq_routing.o
 obj-y	+= relocate.o
 obj-y += physmem.o
diff --git a/arch/x86/lib/pch-uclass.c b/arch/x86/lib/pch-uclass.c
deleted file mode 100644
index 20dfa81..0000000
--- a/arch/x86/lib/pch-uclass.c
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (c) 2015 Google, Inc
- * Written by Simon Glass <sjg@chromium.org>
- *
- * SPDX-License-Identifier:	GPL-2.0+
- */
-
-#include <common.h>
-#include <dm.h>
-#include <dm/root.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static int pch_uclass_post_bind(struct udevice *bus)
-{
-	/*
-	 * Scan the device tree for devices
-	 *
-	 * Before relocation, only bind devices marked for pre-relocation
-	 * use.
-	 */
-	return dm_scan_fdt_node(bus, gd->fdt_blob, bus->of_offset,
-				gd->flags & GD_FLG_RELOC ? false : true);
-}
-
-UCLASS_DRIVER(pch) = {
-	.id		= UCLASS_PCH,
-	.name		= "pch",
-	.post_bind	= pch_uclass_post_bind,
-};