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intel_idle: Support Intel Atom Processor C2000 Product Family
Support the "Intel(R) Atom(TM) Processor C2000 Product Family", formerly code-named Avoton. It is based on the next generation Intel Atom processor architecture, formerly code-named Silvermont. Signed-off-by: Len Brown <len.brown@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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@ -1,7 +1,7 @@
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/*
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* intel_idle.c - native hardware idle loop for modern Intel processors
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*
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* Copyright (c) 2010, Intel Corporation.
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* Copyright (c) 2013, Intel Corporation.
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* Len Brown <len.brown@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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@ -329,6 +329,22 @@ static struct cpuidle_state atom_cstates[] __initdata = {
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{
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.enter = NULL }
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};
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static struct cpuidle_state avn_cstates[CPUIDLE_STATE_MAX] = {
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{
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.name = "C1-AVN",
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.desc = "MWAIT 0x00",
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.flags = MWAIT2flg(0x00) | CPUIDLE_FLAG_TIME_VALID,
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.exit_latency = 2,
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.target_residency = 2,
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.enter = &intel_idle },
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{
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.name = "C6-AVN",
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.desc = "MWAIT 0x51",
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.flags = MWAIT2flg(0x58) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,
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.exit_latency = 15,
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.target_residency = 45,
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.enter = &intel_idle },
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};
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/**
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* intel_idle
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@ -462,6 +478,11 @@ static const struct idle_cpu idle_cpu_hsw = {
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.disable_promotion_to_c1e = true,
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};
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static const struct idle_cpu idle_cpu_avn = {
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.state_table = avn_cstates,
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.disable_promotion_to_c1e = true,
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};
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#define ICPU(model, cpu) \
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{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
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@ -483,6 +504,7 @@ static const struct x86_cpu_id intel_idle_ids[] = {
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ICPU(0x3f, idle_cpu_hsw),
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ICPU(0x45, idle_cpu_hsw),
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ICPU(0x46, idle_cpu_hsw),
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ICPU(0x4D, idle_cpu_avn),
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{}
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};
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MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);
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