/*
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* linux/drivers/cpufreq/sunxi-iks-cpufreq.h
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*
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* Copyright(c) 2013-2015 Allwinnertech Co., Ltd.
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* http://www.allwinnertech.com
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*
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* Author: sunny <sunny@allwinnertech.com>
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*
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* allwinner sunxi iks cpufreq driver header file.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef CPUFREQ_SUNXI_IKS_H
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#define CPUFREQ_SUNXI_IKS_H
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#include <linux/cpufreq.h>
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#include <linux/device.h>
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#include <linux/types.h>
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#define CPUFREQ_DBG(format, args...) \
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pr_debug("[cpu_freq] DBG: "format, ##args)
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#define CPUFREQ_ERR(format, args...) \
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pr_err("[cpu_freq] ERR: "format, ##args)
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/* sun9i platform support two clusters,
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* cluster0 : cortex-a7,
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* cluster1 : cortex-a15.
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*/
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#define A7_CLUSTER 0
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#define A15_CLUSTER 1
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#define MAX_CLUSTERS 2
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#ifdef CONFIG_ARCH_SUN9IW1P1
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#define SUNXI_CPUFREQ_C0_CPUVDD "axp22_dcdc3"
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#define SUNXI_CPUFREQ_C1_CPUVDD "axp15_dcdc1"
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#elif defined(CONFIG_ARCH_SUN8IW6P1) || defined(CONFIG_ARCH_SUN8IW9P1) || defined(CONFIG_ARCH_SUN8IW17P1)
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#define SUNXI_CPUFREQ_C0_CPUVDD "vdd-cpua"
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#define SUNXI_CPUFREQ_C1_CPUVDD "vdd-cpub"
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#endif
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/* the actual and virtual freq convert */
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#define ACTUAL_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq << 1 : freq)
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#define VIRT_FREQ(cluster, freq) ((cluster == A7_CLUSTER) ? freq >> 1 : freq)
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/* the threshold freq of cpu big little switch */
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#define SUNXI_BL_SWITCH_THRESHOLD (600000)
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/* config the transition latency, based on ns */
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#define SUNXI_FREQTRANS_LATENCY (2000000)
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#ifdef CONFIG_BL_SWITCHER
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extern bool bL_switching_enabled;
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#define is_bL_switching_enabled() bL_switching_enabled
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#define set_switching_enabled(x) (bL_switching_enabled = (x))
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#else
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#define is_bL_switching_enabled() false
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#define set_switching_enabled(x) do { } while (0)
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#endif
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static inline int cpu_to_cluster(int cpu)
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{
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#ifdef CONFIG_SMP
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return is_bL_switching_enabled() ? MAX_CLUSTERS : topology_physical_package_id(cpu);
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#else
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return 0;
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#endif
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}
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#endif /* CPUFREQ_SUNXI_IKS_H */
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