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Commit fab04b22 authored by Len Brown's avatar Len Brown Committed by Rafael J. Wysocki
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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: default avatarLen Brown <len.brown@intel.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent f612a4fb

drivers/idle/intel_idle.c

+23 −1
Original line number Diff line number Diff line 
/*

 * intel_idle.c - native hardware idle loop for modern Intel processors

 *

 * Copyright (c) 2010, Intel Corporation.

 * Copyright (c) 2013, Intel Corporation.

 * Len Brown <len.brown@intel.com>

 *

 * This program is free software; you can redistribute it and/or modify it
@@ -329,6 +329,22 @@ static struct cpuidle_state atom_cstates[] __initdata = { 
	{

		.enter = NULL }

};

static struct cpuidle_state avn_cstates[CPUIDLE_STATE_MAX] = {

	{

		.name = "C1-AVN",

		.desc = "MWAIT 0x00",

		.flags = MWAIT2flg(0x00) | CPUIDLE_FLAG_TIME_VALID,

		.exit_latency = 2,

		.target_residency = 2,

		.enter = &intel_idle },

	{

		.name = "C6-AVN",

		.desc = "MWAIT 0x51",

		.flags = MWAIT2flg(0x58) | CPUIDLE_FLAG_TIME_VALID | CPUIDLE_FLAG_TLB_FLUSHED,

		.exit_latency = 15,

		.target_residency = 45,

		.enter = &intel_idle },

};



/**

 * intel_idle
@@ -462,6 +478,11 @@ static const struct idle_cpu idle_cpu_hsw = { 
	.disable_promotion_to_c1e = true,

};



static const struct idle_cpu idle_cpu_avn = {

	.state_table = avn_cstates,

	.disable_promotion_to_c1e = true,

};



#define ICPU(model, cpu) \

	{ X86_VENDOR_INTEL, 6, model, X86_FEATURE_MWAIT, (unsigned long)&cpu }
@@ -483,6 +504,7 @@ static const struct x86_cpu_id intel_idle_ids[] = { 
	ICPU(0x3f, idle_cpu_hsw),

	ICPU(0x45, idle_cpu_hsw),

	ICPU(0x46, idle_cpu_hsw),

	ICPU(0x4D, idle_cpu_avn),

	{}

};

MODULE_DEVICE_TABLE(x86cpu, intel_idle_ids);