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Commit 72b099ed authored by Sonic Zhang's avatar Sonic Zhang Committed by Bob Liu
Browse files

blackfin: bf60x: pm: Add a debug option to calculate kernel wakeup time. 



Display the total time when kernel resumes normal from standby or suspend to mem
mode.

Signed-off-by: default avatarSonic Zhang <sonic.zhang@analog.com>
Signed-off-by: default avatarBob Liu <lliubbo@gmail.com>
parent 0fbd88ca

arch/blackfin/Kconfig.debug

+7 −0
Original line number Diff line number Diff line
@@ -253,4 +253,11 @@ config BFIN_PSEUDODBG_INSNS 


	  Most people should say N here.



config BFIN_PM_WAKEUP_TIME_BENCH

	bool "Display the total time for kernel to resume from power saving mode"

	default n

	help

	  Display the total time when kernel resumes normal from standby or

	  suspend to mem mode.



endmenu

arch/blackfin/include/asm/dpmc.h

+14 −0
Original line number Diff line number Diff line
@@ -53,6 +53,16 @@ 
#define PM_SYS_PUSH16(n, x)     _PM_PUSH(n, x, w, SYSMMR_BASE)

#define PM_SYS_POP16(n, x)      _PM_POP(n, x, w, SYSMMR_BASE)



	.macro bfin_init_pm_bench_cycles

#ifdef CONFIG_BFIN_PM_WAKEUP_TIME_BENCH

	R4 = 0;

	CYCLES = R4;

	CYCLES2 = R4;

	R4 = SYSCFG;

	BITSET(R4, 1);

	SYSCFG = R4;

#endif

	.endm



	.macro bfin_cpu_reg_save

	/*
@@ -98,8 +108,10 @@ 
	r7 = RETI;

	[--sp] = RETS;

	[--sp] = ASTAT;

#ifndef CONFIG_BFIN_PM_WAKEUP_TIME_BENCH

	[--sp] = CYCLES;

	[--sp] = CYCLES2;

#endif

	[--sp] = SYSCFG;

	[--sp] = RETX;

	[--sp] = SEQSTAT;
@@ -115,8 +127,10 @@ 
	SEQSTAT = [sp++];

	RETX = [sp++];

	SYSCFG = [sp++];

#ifndef CONFIG_BFIN_PM_WAKEUP_TIME_BENCH

	CYCLES2 = [sp++];

	CYCLES = [sp++];

#endif

	ASTAT = [sp++];

	RETS = [sp++];

arch/blackfin/mach-bf609/hibernate.S

+3 −0
Original line number Diff line number Diff line
@@ -24,6 +24,9 @@ ENTRY(_enter_hibernate) 
	P0.L = LO(DPM0_CTL);

	R3.H = HI(0x00000010);

	R3.L = LO(0x00000010);



	bfin_init_pm_bench_cycles;



	[P0] = R3;



	SSYNC;

arch/blackfin/mach-bf609/pm.c

+12 −0
Original line number Diff line number Diff line
@@ -147,6 +147,18 @@ void bfin_deepsleep(unsigned long mask) 
			"idle;" \

			: : \

			);

#ifdef CONFIG_BFIN_PM_WAKEUP_TIME_BENCH

	__asm__ __volatile__(

		"%0 = 0;"

		"CYCLES = %0;"

		"CYCLES2 = %0;"

		"%0 = SYSCFG;"

		"BITSET(%0, 1);"

		"SYSCFG = %0;"

		: "=d,a" (dpm0_ctl) :

	);

#endif



}



__attribute__((l1_text))

arch/blackfin/mach-common/dpmc_modes.S

+8 −0
Original line number Diff line number Diff line
@@ -42,6 +42,9 @@ ENTRY(_sleep_mode) 
	BITCLR (R7, 5);

	w[p0] = R7.L;

	IDLE;



	bfin_init_pm_bench_cycles;



	call _test_pll_locked;



	RETS = [SP++];
@@ -74,6 +77,9 @@ ENTRY(_hibernate_mode) 


	/* Finally, we climb into our cave to hibernate */

	W[P3] = R4.L;



	bfin_init_pm_bench_cycles;



	CLI R2;

	IDLE;

.Lforever:
@@ -158,6 +164,8 @@ ENTRY(_sleep_deeper) 
	SSYNC;

	IDLE;



	bfin_init_pm_bench_cycles;



	call _test_pll_locked;



	P0.H = hi(PLL_DIV);