C++ (Cpp) msm_spm_smp_set_vdd示例

示例#1

文件： spm_devices.c 项目： darcyg/ap_project_v2

int msm_spm_set_vdd(unsigned int cpu, unsigned int vlevel)
{
	struct msm_spm_vdd_info info;
	int ret;

	info.cpu = cpu;
	info.vlevel = vlevel;

	if ((smp_processor_id() != cpu) && cpu_online(cpu)) {
		/**
		 * We do not want to set the voltage of another core from
		 * this core, as its possible that we may race the vdd change
		 * with the SPM state machine of that core, which could also
		 * be changing the voltage of that core during power collapse.
		 * Hence, set the function to be executed on that core and block
		 * until the vdd change is complete.
		 */
		ret = smp_call_function_single(cpu, msm_spm_smp_set_vdd,
				&info, true);
		if (!ret)
			ret = info.err;
	} else {
		/**
		 * Since the core is not online, it is safe to set the vdd
		 * directly.
		 */
		msm_spm_smp_set_vdd(&info);
		ret = info.err;
	}

	return ret;
}

示例#2

文件： spm_devices.c 项目： Blackburn29/PsycoKernel

int msm_spm_set_vdd(unsigned int cpu, unsigned int vlevel)
{
	struct msm_spm_vdd_info info;
	int ret;

	info.cpu = cpu;
	info.vlevel = vlevel;
	info.err = -ENODEV;

	if (!msm_spm_L2_apcs_master && (smp_processor_id() != cpu) &&
			cpu_online(cpu)) {
		ret = smp_call_function_single(cpu, msm_spm_smp_set_vdd,
				&info, true);
		if (!ret)
			ret = info.err;
	} else {
		msm_spm_smp_set_vdd(&info);
		ret = info.err;
	}

	return ret;
}