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authorDeepthi Dharwar <deepthi@linux.vnet.ibm.com>2014-01-14 11:02:40 (GMT)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-01-29 06:02:24 (GMT)
commit2c2e6ecfd077cbae72d32568af58c4ba57826c84 (patch)
treef46be303b75ef724a47fea4d9bb58bea9e1b4e71 /arch/powerpc/platforms
parent3fa8cad82b94d0bed002571bd246f2299ffc876b (diff)
powerpc/powernv/cpuidle: Back-end cpuidle driver for powernv platform.
Following patch ports the cpuidle framework for powernv platform and also implements a cpuidle back-end powernv idle driver calling on to power7_nap and snooze idle states. Signed-off-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/platforms')
-rw-r--r--arch/powerpc/platforms/powernv/setup.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index a932feb..21166f6 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -26,6 +26,7 @@
#include <linux/of_fdt.h>
#include <linux/interrupt.h>
#include <linux/bug.h>
+#include <linux/cpuidle.h>
#include <asm/machdep.h>
#include <asm/firmware.h>
@@ -216,6 +217,16 @@ static int __init pnv_probe(void)
return 1;
}
+void powernv_idle(void)
+{
+ /* Hook to cpuidle framework if available, else
+ * call on default platform idle code
+ */
+ if (cpuidle_idle_call()) {
+ power7_idle();
+ }
+}
+
define_machine(powernv) {
.name = "PowerNV",
.probe = pnv_probe,
@@ -225,7 +236,7 @@ define_machine(powernv) {
.show_cpuinfo = pnv_show_cpuinfo,
.progress = pnv_progress,
.machine_shutdown = pnv_shutdown,
- .power_save = power7_idle,
+ .power_save = powernv_idle,
.calibrate_decr = generic_calibrate_decr,
#ifdef CONFIG_KEXEC
.kexec_cpu_down = pnv_kexec_cpu_down,

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