[PATCH v5 1/6] driver: cpuidle-big-little: add of_device_id structure
From: Chander Kashyap <hidden>
Date: 2014-05-14 08:04:30
Also in:
linux-pm, linux-samsung-soc, lkml
Subsystem:
cpu idle time management framework, cpuidle driver - arm big little, the rest · Maintainers:
"Rafael J. Wysocki", Daniel Lezcano, Lorenzo Pieralisi, Linus Torvalds
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 <redacted> Signed-off-by: Chander Kashyap <redacted> --- drivers/cpuidle/cpuidle-big_little.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/cpuidle/cpuidle-big_little.c b/drivers/cpuidle/cpuidle-big_little.c
index b45fc62..4cd02bd 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
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1.7.9.5