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Diffstat (limited to 'arch/powerpc/platforms/powernv/setup.c')
-rw-r--r--arch/powerpc/platforms/powernv/setup.c54
1 files changed, 20 insertions, 34 deletions
diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index d2de7d5d7574..16fdcb23f4c3 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -32,7 +32,6 @@
#include <asm/machdep.h>
#include <asm/firmware.h>
#include <asm/xics.h>
-#include <asm/rtas.h>
#include <asm/opal.h>
#include <asm/kexec.h>
#include <asm/smp.h>
@@ -278,20 +277,6 @@ static void __init pnv_setup_machdep_opal(void)
ppc_md.handle_hmi_exception = opal_handle_hmi_exception;
}
-#ifdef CONFIG_PPC_POWERNV_RTAS
-static void __init pnv_setup_machdep_rtas(void)
-{
- if (rtas_token("get-time-of-day") != RTAS_UNKNOWN_SERVICE) {
- ppc_md.get_boot_time = rtas_get_boot_time;
- ppc_md.get_rtc_time = rtas_get_rtc_time;
- ppc_md.set_rtc_time = rtas_set_rtc_time;
- }
- ppc_md.restart = rtas_restart;
- pm_power_off = rtas_power_off;
- ppc_md.halt = rtas_halt;
-}
-#endif /* CONFIG_PPC_POWERNV_RTAS */
-
static u32 supported_cpuidle_states;
int pnv_save_sprs_for_winkle(void)
@@ -409,37 +394,39 @@ static int __init pnv_init_idle_states(void)
{
struct device_node *power_mgt;
int dt_idle_states;
- const __be32 *idle_state_flags;
- u32 len_flags, flags;
+ u32 *flags;
int i;
supported_cpuidle_states = 0;
if (cpuidle_disable != IDLE_NO_OVERRIDE)
- return 0;
+ goto out;
if (!firmware_has_feature(FW_FEATURE_OPALv3))
- return 0;
+ goto out;
power_mgt = of_find_node_by_path("/ibm,opal/power-mgt");
if (!power_mgt) {
pr_warn("opal: PowerMgmt Node not found\n");
- return 0;
+ goto out;
+ }
+ dt_idle_states = of_property_count_u32_elems(power_mgt,
+ "ibm,cpu-idle-state-flags");
+ if (dt_idle_states < 0) {
+ pr_warn("cpuidle-powernv: no idle states found in the DT\n");
+ goto out;
}
- idle_state_flags = of_get_property(power_mgt,
- "ibm,cpu-idle-state-flags", &len_flags);
- if (!idle_state_flags) {
- pr_warn("DT-PowerMgmt: missing ibm,cpu-idle-state-flags\n");
- return 0;
+ flags = kzalloc(sizeof(*flags) * dt_idle_states, GFP_KERNEL);
+ if (of_property_read_u32_array(power_mgt,
+ "ibm,cpu-idle-state-flags", flags, dt_idle_states)) {
+ pr_warn("cpuidle-powernv: missing ibm,cpu-idle-state-flags in DT\n");
+ goto out_free;
}
- dt_idle_states = len_flags / sizeof(u32);
+ for (i = 0; i < dt_idle_states; i++)
+ supported_cpuidle_states |= flags[i];
- for (i = 0; i < dt_idle_states; i++) {
- flags = be32_to_cpu(idle_state_flags[i]);
- supported_cpuidle_states |= flags;
- }
if (!(supported_cpuidle_states & OPAL_PM_SLEEP_ENABLED_ER1)) {
patch_instruction(
(unsigned int *)pnv_fastsleep_workaround_at_entry,
@@ -449,6 +436,9 @@ static int __init pnv_init_idle_states(void)
PPC_INST_NOP);
}
pnv_alloc_idle_core_states();
+out_free:
+ kfree(flags);
+out:
return 0;
}
@@ -465,10 +455,6 @@ static int __init pnv_probe(void)
if (firmware_has_feature(FW_FEATURE_OPAL))
pnv_setup_machdep_opal();
-#ifdef CONFIG_PPC_POWERNV_RTAS
- else if (rtas.base)
- pnv_setup_machdep_rtas();
-#endif /* CONFIG_PPC_POWERNV_RTAS */
pr_debug("PowerNV detected !\n");