Messages in this thread Patch in this message | | | From | Sebastian Andrzej Siewior <> | Subject | [PATCH 06/11] x86/dtb: add support hpet | Date | Tue, 22 Feb 2011 21:07:41 +0100 |
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Set hpet_address based on information provied form DTB
Cc: devicetree-discuss@lists.ozlabs.org Cc: Dirk Brandewie <dirk.brandewie@gmail.com> Acked-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> --- arch/x86/kernel/devicetree.c | 19 +++++++++++++++++++ 1 files changed, 19 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/devicetree.c b/arch/x86/kernel/devicetree.c index 72cc3e2..8d7a2eb 100644 --- a/arch/x86/kernel/devicetree.c +++ b/arch/x86/kernel/devicetree.c @@ -11,6 +11,7 @@ #include <linux/of_platform.h> #include <linux/slab.h> +#include <asm/hpet.h> #include <asm/irq_controller.h> #include <asm/apic.h> @@ -99,6 +100,23 @@ void __init add_dtb(u64 data) initial_dtb = data + offsetof(struct setup_data, data); } +static void __init dtb_setup_hpet(void) +{ + struct device_node *dn; + struct resource r; + int ret; + + dn = of_find_compatible_node(NULL, NULL, "intel,ce4100-hpet"); + if (!dn) + return; + ret = of_address_to_resource(dn, 0, &r); + if (ret) { + WARN_ON(1); + return; + } + hpet_address = r.start; +} + static void __init dtb_lapic_setup(void) { #ifdef CONFIG_X86_LOCAL_APIC @@ -199,5 +217,6 @@ void __init x86_dtb_get_config(unsigned int unused) of_scan_flat_dt(early_init_dt_scan_root, NULL); unflatten_device_tree(); + dtb_setup_hpet(); dtb_apic_setup(); } -- 1.7.4
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