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path: root/drivers/cpuidle/cpuidle-calxeda.c
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Diffstat (limited to 'drivers/cpuidle/cpuidle-calxeda.c')
-rw-r--r--drivers/cpuidle/cpuidle-calxeda.c57
1 files changed, 4 insertions, 53 deletions
diff --git a/drivers/cpuidle/cpuidle-calxeda.c b/drivers/cpuidle/cpuidle-calxeda.c
index e1aab38c5a8..223379169cb 100644
--- a/drivers/cpuidle/cpuidle-calxeda.c
+++ b/drivers/cpuidle/cpuidle-calxeda.c
@@ -1,7 +1,7 @@
/*
* Copyright 2012 Calxeda, Inc.
*
- * Based on arch/arm/plat-mxc/cpuidle.c:
+ * Based on arch/arm/plat-mxc/cpuidle.c: #v3.7
* Copyright 2012 Freescale Semiconductor, Inc.
* Copyright 2012 Linaro Ltd.
*
@@ -16,6 +16,8 @@
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Maintainer: Rob Herring <rob.herring@calxeda.com>
*/
#include <linux/cpuidle.h>
@@ -35,8 +37,6 @@
extern void highbank_set_cpu_jump(int cpu, void *jump_addr);
extern void *scu_base_addr;
-static struct cpuidle_device __percpu *calxeda_idle_cpuidle_devices;
-
static inline unsigned int get_auxcr(void)
{
unsigned int val;
@@ -85,22 +85,8 @@ static int calxeda_pwrdown_idle(struct cpuidle_device *dev,
return index;
}
-static void calxeda_idle_cpuidle_devices_uninit(void)
-{
- int i;
- struct cpuidle_device *dev;
-
- for_each_possible_cpu(i) {
- dev = per_cpu_ptr(calxeda_idle_cpuidle_devices, i);
- cpuidle_unregister_device(dev);
- }
-
- free_percpu(calxeda_idle_cpuidle_devices);
-}
-
static struct cpuidle_driver calxeda_idle_driver = {
.name = "calxeda_idle",
- .en_core_tk_irqen = 1,
.states = {
ARM_CPUIDLE_WFI_STATE,
{
@@ -118,44 +104,9 @@ static struct cpuidle_driver calxeda_idle_driver = {
static int __init calxeda_cpuidle_init(void)
{
- int cpu_id;
- int ret;
- struct cpuidle_device *dev;
- struct cpuidle_driver *drv = &calxeda_idle_driver;
-
if (!of_machine_is_compatible("calxeda,highbank"))
return -ENODEV;
- ret = cpuidle_register_driver(drv);
- if (ret)
- return ret;
-
- calxeda_idle_cpuidle_devices = alloc_percpu(struct cpuidle_device);
- if (calxeda_idle_cpuidle_devices == NULL) {
- ret = -ENOMEM;
- goto unregister_drv;
- }
-
- /* initialize state data for each cpuidle_device */
- for_each_possible_cpu(cpu_id) {
- dev = per_cpu_ptr(calxeda_idle_cpuidle_devices, cpu_id);
- dev->cpu = cpu_id;
- dev->state_count = drv->state_count;
-
- ret = cpuidle_register_device(dev);
- if (ret) {
- pr_err("Failed to register cpu %u, error: %d\n",
- cpu_id, ret);
- goto uninit;
- }
- }
-
- return 0;
-
-uninit:
- calxeda_idle_cpuidle_devices_uninit();
-unregister_drv:
- cpuidle_unregister_driver(drv);
- return ret;
+ return cpuidle_register(&calxeda_idle_driver, NULL);
}
module_init(calxeda_cpuidle_init);