On 13/06/16 05:47, Sajjan, Vikas C wrote:
Hi Sudeep,
[...]
--- a/drivers/firmware/psci.c
+++ b/drivers/firmware/psci.c
@@ -13,6 +13,7 @@
#define pr_fmt(fmt) "psci: " fmt
+#include <linux/acpi.h>
#include <linux/arm-smccc.h>
#include <linux/cpuidle.h>
#include <linux/errno.h>
@@ -310,11 +311,66 @@ static int psci_dt_cpu_init_idle(struct device_node *cpu_node, int cpu)
return ret;
}
+#ifdef CONFIG_ACPI
+#include <acpi/processor.h>
+
+static int __maybe_unused psci_acpi_cpu_init_idle(unsigned int cpu) {
+ int i, count;
+ u32 *psci_states;
+ struct acpi_processor *pr;
+ struct acpi_lpi_state *lpi;
+
+ pr = per_cpu(processors, cpu);
+ if (unlikely(!pr || !pr->flags.has_lpi))
Any particular reason for _not_ considering CST flag here.
Or you are planning to add CST support in some other patch set.
Are you referring the old C-state objects ? We don't support them on
ARM64. Only LPIs are support. The ARM FFH is not defined for CST, only
for LPIs.
--
Regards,
Sudeep
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