From a274e9cac55de3c8ca4e877912a260fb646df38d Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 26 Mar 2015 09:29:28 -0600 Subject: dm: x86: Add a uclass for an Low Pin Count (LPC) device On x86 systems this device is commonly used to provide legacy port access. It is sort-of a replacement for the old ISA bus. Add a uclass for this, and allow it to have child devices. Signed-off-by: Simon Glass --- arch/x86/lib/lpc-uclass.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 arch/x86/lib/lpc-uclass.c (limited to 'arch/x86/lib/lpc-uclass.c') diff --git a/arch/x86/lib/lpc-uclass.c b/arch/x86/lib/lpc-uclass.c new file mode 100644 index 00000000000..6aeb4d461a9 --- /dev/null +++ b/arch/x86/lib/lpc-uclass.c @@ -0,0 +1,28 @@ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include + +static int lpc_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(lpc) = { + .id = UCLASS_LPC, + .name = "lpc", + .post_bind = lpc_uclass_post_bind, +}; -- cgit v1.2.3