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authorChander Kashyap <chander.kashyap@linaro.org>2014-07-05 01:24:34 +0400
committerKukjin Kim <kgene.kim@samsung.com>2014-07-18 22:35:53 +0400
commite2e54362d9c8c1e8d52ff576a4e0f6e61f569356 (patch)
tree9b6c649c3df185e5f133c8c32f3f713eb6408c70 /drivers/cpuidle
parent1795cd9b3a91d4b5473c97f491d63892442212ab (diff)
downloadlinux-e2e54362d9c8c1e8d52ff576a4e0f6e61f569356.tar.xz
cpuidle: big.LITTLE: add of_device_id structure
This driver will be used by many big.Little Soc's. As of now it does string matching of hardcoded compatible string to init the driver. This comparison list will keep on growing with addition of new SoC's. Hence add of_device_id structure to collect the compatible strings of SoC's using this driver. Signed-off-by: Chander Kashyap <chander.kashyap@linaro.org> Reviewed-by: Tomasz Figa <t.figa@samsung.com> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'drivers/cpuidle')
-rw-r--r--drivers/cpuidle/cpuidle-big_little.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c
index b45fc6249041..4cd02bd2e3ba 100644
--- a/drivers/cpuidle/cpuidle-big_little.c
+++ b/drivers/cpuidle/cpuidle-big_little.c
@@ -163,14 +163,23 @@ static int __init bl_idle_driver_init(struct cpuidle_driver *drv, int cpu_id)
return 0;
}
+static const struct of_device_id compatible_machine_match[] = {
+ { .compatible = "arm,vexpress,v2p-ca15_a7" },
+ {},
+};
+
static int __init bl_idle_init(void)
{
int ret;
+ struct device_node *root = of_find_node_by_path("/");
+
+ if (!root)
+ return -ENODEV;
/*
* Initialize the driver just for a compliant set of machines
*/
- if (!of_machine_is_compatible("arm,vexpress,v2p-ca15_a7"))
+ if (!of_match_node(compatible_machine_match, root))
return -ENODEV;
/*
* For now the differentiation between little and big cores