C++ (Cpp) mcpm_cpu_suspend Examples

Example #1

File: suspend.c Project: 3bsa/linux

static int exynos5420_cpu_suspend(unsigned long arg)
{
	/* MCPM works with HW CPU identifiers */
	unsigned int mpidr = read_cpuid_mpidr();
	unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
	unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);

	__raw_writel(0x0, sysram_base_addr + EXYNOS5420_CPU_STATE);

	if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) {
		mcpm_set_entry_vector(cpu, cluster, exynos_cpu_resume);

		/*
		 * Residency value passed to mcpm_cpu_suspend back-end
		 * has to be given clear semantics. Set to 0 as a
		 * temporary value.
		 */
		mcpm_cpu_suspend(0);
	}

	pr_info("Failed to suspend the system\n");

	/* return value != 0 means failure */
	return 1;
}

Example #2

File: cpuidle-mmp-armv7.c Project: acorn-marvell/brillo_pxa_kernel

static int notrace mcpm_powerdown_finisher(unsigned long arg)
{
	u32 mpidr = read_cpuid_mpidr();
	u32 cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);
	u32 this_cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);

	mcpm_set_entry_vector(cpu, this_cluster, cpu_resume);
	mcpm_cpu_suspend(arg);
	return 1;
}

Example #3

File: arm_big_little.c Project: ColinIanKing/m576

static int notrace bl_powerdown_finisher(unsigned long arg)
{
	unsigned int mpidr = read_cpuid_mpidr();
	unsigned int cluster = (mpidr >> 8) & 0xf;
	unsigned int cpu = mpidr & 0xf;

	mcpm_set_entry_vector(cpu, cluster, cpu_resume);
	mcpm_cpu_suspend(0);  /* 0 should be replaced with better value here */
	return 1;
}

Example #4

File: cpuidle-big_little.c Project: 383530895/linux

/*
 * notrace prevents trace shims from getting inserted where they
 * should not. Global jumps and ldrex/strex must not be inserted
 * in power down sequences where caches and MMU may be turned off.
 */
static int notrace bl_powerdown_finisher(unsigned long arg)
{
	/* MCPM works with HW CPU identifiers */
	unsigned int mpidr = read_cpuid_mpidr();
	unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
	unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);

	mcpm_set_entry_vector(cpu, cluster, cpu_resume);

	/*
	 * Residency value passed to mcpm_cpu_suspend back-end
	 * has to be given clear semantics. Set to 0 as a
	 * temporary value.
	 */
	mcpm_cpu_suspend(0);

	/* return value != 0 means failure */
	return 1;
}

Example #5

File: suspend.c Project: AlexanderStein/linux

static int exynos5420_cpu_suspend(unsigned long arg)
{
	/* MCPM works with HW CPU identifiers */
	unsigned int mpidr = read_cpuid_mpidr();
	unsigned int cluster = MPIDR_AFFINITY_LEVEL(mpidr, 1);
	unsigned int cpu = MPIDR_AFFINITY_LEVEL(mpidr, 0);

	writel_relaxed(0x0, sysram_base_addr + EXYNOS5420_CPU_STATE);

	if (IS_ENABLED(CONFIG_EXYNOS5420_MCPM)) {
		mcpm_set_entry_vector(cpu, cluster, exynos_cpu_resume);
		mcpm_cpu_suspend();
	}

	pr_info("Failed to suspend the system\n");

	/* return value != 0 means failure */
	return 1;
}