@@ -10,8 +10,13 @@
* for more details.
*/
+#include <linux/cpuidle.h>
#include <linux/kernel.h>
#include <linux/smp.h>
+#include <linux/platform_data/renesas-cpuidle.h>
+#include <linux/pm.h>
+#include <asm/cpuidle.h>
+#include <asm/cputype.h>
#include <asm/io.h>
#include "common.h"
#include "pm-rcar.h"
@@ -43,6 +48,32 @@ static inline void r8a7791_sysc_init(void) {}
#endif /* CONFIG_SMP */
+static struct cpuidle_driver r8a7791_cpuidle_driver = {
+ .name = "rcar_r8a7791_cpuidle",
+ .owner = THIS_MODULE,
+ .states = {
+ [0] = ARM_CPUIDLE_WFI_STATE,
+ [1] = {
+ .name = "Core-Standby",
+ .desc = "Core Standby Mode",
+ .exit_latency = 2800,
+ .target_residency = 2800,
+ .enter = shmobile_smp_apmu_enter_cpuidle,
+ },
+ },
+ .state_count = 2,
+};
+
+static struct renesas_cpuidle_driver r8a7791_cpuidle = {
+ .target_cpu = ARM_CPU_PART_CORTEX_A15,
+ .renesas_drv = &r8a7791_cpuidle_driver,
+};
+
+static struct renesas_cpuidle r8a7791_data = {
+ .num_drvs = 1,
+ .rcd = &r8a7791_cpuidle,
+};
+
void __init r8a7791_pm_init(void)
{
void __iomem *p;
@@ -70,4 +101,7 @@ void __init r8a7791_pm_init(void)
r8a7791_sysc_init();
shmobile_smp_apmu_suspend_init();
+
+ if (IS_ENABLED(CONFIG_ARM_RENESAS_CPUIDLE))
+ shmobile_cpuidle_set_driver(&r8a7791_data);
}
This patch Add the wfi and Core-Standby for CPUIdle power states support for the r8a7791 SoC. Signed-off-by: Keita Kobayashi <keita.kobayashi.ym@renesas.com> --- arch/arm/mach-shmobile/pm-r8a7791.c | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+)