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Commit 1f048f23 authored by Murali Nalajala's avatar Murali Nalajala
Browse files

cpuidle: lpm-levels: Print enabled clocks during system suspend 



Currently msm-pm driver is printing the enabled clocks during
the system suspend. After introducing the PSCI framework msm-pm
driver is not being used and can not able to know the enabled
clocks during suspend. Call an API to print the clocks from lpm
driver instead msm-pm driver.

e.g:
	echo 1 > /d/clk/debug_suspend

Change-Id: I42373c882ce0d94efc7941238bb7ea011138ed63
Signed-off-by: default avatarMurali Nalajala <mnalajal@codeaurora.org>
parent 4c47f344

drivers/cpuidle/lpm-levels.c

+10 −0
Original line number Diff line number Diff line
@@ -48,6 +48,7 @@ 
#include <trace/events/power.h>

#define CREATE_TRACE_POINTS

#include <trace/events/trace_msm_low_power.h>

#include "../../drivers/clk/msm/clock.h"



#define SCLK_HZ (32768)

#define SCM_HANDOFF_LOCK_ID "S:7"
@@ -1041,6 +1042,15 @@ static int lpm_suspend_enter(suspend_state_t state) 
	if (idx > 0)

		update_debug_pc_event(CPU_ENTER, idx, 0xdeaffeed,

					0xdeaffeed, false);



	/*

	 * Print the clocks which are enabled during system suspend

	 * This debug information is useful to know which are the

	 * clocks that are enabled and preventing the system level

	 * LPMs(XO and Vmin).

	 */

	clock_debug_print_enabled();



	if (!use_psci)

		msm_cpu_pm_enter_sleep(cluster->cpu->levels[idx].mode, false);

	else

drivers/power/qcom/msm-pm.c

+3 −13
Original line number Diff line number Diff line
@@ -42,7 +42,6 @@ 
#include <soc/qcom/jtag.h>

#include "idle.h"

#include "pm-boot.h"

#include "../../../drivers/clk/msm/clock.h"



#define SCM_CMD_TERMINATE_PC	(0x2)

#define SCM_CMD_CORE_HOTPLUGGED (0x10)
@@ -63,10 +62,9 @@ enum { 
	MSM_PM_DEBUG_SUSPEND_LIMITS = BIT(2),

	MSM_PM_DEBUG_CLOCK = BIT(3),

	MSM_PM_DEBUG_RESET_VECTOR = BIT(4),

	MSM_PM_DEBUG_IDLE_CLK = BIT(5),

	MSM_PM_DEBUG_IDLE = BIT(6),

	MSM_PM_DEBUG_IDLE_LIMITS = BIT(7),

	MSM_PM_DEBUG_HOTPLUG = BIT(8),

	MSM_PM_DEBUG_IDLE = BIT(5),

	MSM_PM_DEBUG_IDLE_LIMITS = BIT(6),

	MSM_PM_DEBUG_HOTPLUG = BIT(7),

};



enum msm_pc_count_offsets {
@@ -370,14 +368,6 @@ static bool msm_pm_power_collapse(bool from_idle) 
	if (MSM_PM_DEBUG_POWER_COLLAPSE & msm_pm_debug_mask)

		pr_info("CPU%u: %s: pre power down\n", cpu, __func__);



	/* This spews a lot of messages when a core is hotplugged. This

	 * information is most useful from last core going down during

	 * power collapse

	 */

	if ((!from_idle && cpu_online(cpu))

			|| (MSM_PM_DEBUG_IDLE_CLK & msm_pm_debug_mask))

		clock_debug_print_enabled();



	if (cpu_online(cpu) && !msm_no_ramp_down_pc)

		saved_acpuclk_rate = ramp_down_last_cpu(cpu);