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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 15:21:02 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 15:21:02 -0700
commit3ed1c478eff8db80e234d5446cb378b503135888 (patch)
treee1c8e0f488ca49c49b5a31fe59add4254381dd4b /arch/arm/mach-integrator/cpu.c
parent151173e8ce9b95bbbbd7eedb9035cfaffbdb7cb2 (diff)
parent371deb9500831ad1afbf9ea00e373f650deaed2f (diff)
Merge tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management and ACPI updates from Rafael J Wysocki: - ARM big.LITTLE cpufreq driver from Viresh Kumar. - exynos5440 cpufreq driver from Amit Daniel Kachhap. - cpufreq core cleanup and code consolidation from Viresh Kumar and Stratos Karafotis. - cpufreq scalability improvement from Nathan Zimmer. - AMD "frequency sensitivity feedback" powersave bias for the ondemand cpufreq governor from Jacob Shin. - cpuidle code consolidation and cleanups from Daniel Lezcano. - ARM OMAP cpuidle fixes from Santosh Shilimkar and Daniel Lezcano. - ACPICA fixes and other improvements from Bob Moore, Jung-uk Kim, Lv Zheng, Yinghai Lu, Tang Chen, Colin Ian King, and Linn Crosetto. - ACPI core updates related to hotplug from Toshi Kani, Paul Bolle, Yasuaki Ishimatsu, and Rafael J Wysocki. - Intel Lynxpoint LPSS (Low-Power Subsystem) support improvements from Rafael J Wysocki and Andy Shevchenko. * tag 'pm+acpi-3.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (192 commits) cpufreq: Revert incorrect commit 5800043 cpufreq: MAINTAINERS: Add co-maintainer cpuidle: add maintainer entry ACPI / thermal: do not always return THERMAL_TREND_RAISING for active trip points ARM: s3c64xx: cpuidle: use init/exit common routine cpufreq: pxa2xx: initialize variables ACPI: video: correct acpi_video_bus_add error processing SH: cpuidle: use init/exit common routine ARM: S5pv210: compiling issue, ARM_S5PV210_CPUFREQ needs CONFIG_CPU_FREQ_TABLE=y ACPI: Fix wrong parameter passed to memblock_reserve cpuidle: fix comment format pnp: use %*phC to dump small buffers isapnp: remove debug leftovers ARM: imx: cpuidle: use init/exit common routine ARM: davinci: cpuidle: use init/exit common routine ARM: kirkwood: cpuidle: use init/exit common routine ARM: calxeda: cpuidle: use init/exit common routine ARM: tegra: cpuidle: use init/exit common routine for tegra3 ARM: tegra: cpuidle: use init/exit common routine for tegra2 ARM: OMAP4: cpuidle: use init/exit common routine ...
Diffstat (limited to 'arch/arm/mach-integrator/cpu.c')
-rw-r--r--arch/arm/mach-integrator/cpu.c224
1 files changed, 0 insertions, 224 deletions
diff --git a/arch/arm/mach-integrator/cpu.c b/arch/arm/mach-integrator/cpu.c
deleted file mode 100644
index 590c192cdf4d..000000000000
--- a/arch/arm/mach-integrator/cpu.c
+++ /dev/null
@@ -1,224 +0,0 @@
-/*
- * linux/arch/arm/mach-integrator/cpu.c
- *
- * Copyright (C) 2001-2002 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * CPU support functions
- */
-#include <linux/module.h>
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/cpufreq.h>
-#include <linux/sched.h>
-#include <linux/smp.h>
-#include <linux/init.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <mach/platform.h>
-#include <asm/mach-types.h>
-#include <asm/hardware/icst.h>
-
-static struct cpufreq_driver integrator_driver;
-
-#define CM_ID __io_address(INTEGRATOR_HDR_ID)
-#define CM_OSC __io_address(INTEGRATOR_HDR_OSC)
-#define CM_STAT __io_address(INTEGRATOR_HDR_STAT)
-#define CM_LOCK __io_address(INTEGRATOR_HDR_LOCK)
-
-static const struct icst_params lclk_params = {
- .ref = 24000000,
- .vco_max = ICST525_VCO_MAX_5V,
- .vco_min = ICST525_VCO_MIN,
- .vd_min = 8,
- .vd_max = 132,
- .rd_min = 24,
- .rd_max = 24,
- .s2div = icst525_s2div,
- .idx2s = icst525_idx2s,
-};
-
-static const struct icst_params cclk_params = {
- .ref = 24000000,
- .vco_max = ICST525_VCO_MAX_5V,
- .vco_min = ICST525_VCO_MIN,
- .vd_min = 12,
- .vd_max = 160,
- .rd_min = 24,
- .rd_max = 24,
- .s2div = icst525_s2div,
- .idx2s = icst525_idx2s,
-};
-
-/*
- * Validate the speed policy.
- */
-static int integrator_verify_policy(struct cpufreq_policy *policy)
-{
- struct icst_vco vco;
-
- cpufreq_verify_within_limits(policy,
- policy->cpuinfo.min_freq,
- policy->cpuinfo.max_freq);
-
- vco = icst_hz_to_vco(&cclk_params, policy->max * 1000);
- policy->max = icst_hz(&cclk_params, vco) / 1000;
-
- vco = icst_hz_to_vco(&cclk_params, policy->min * 1000);
- policy->min = icst_hz(&cclk_params, vco) / 1000;
-
- cpufreq_verify_within_limits(policy,
- policy->cpuinfo.min_freq,
- policy->cpuinfo.max_freq);
-
- return 0;
-}
-
-
-static int integrator_set_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- cpumask_t cpus_allowed;
- int cpu = policy->cpu;
- struct icst_vco vco;
- struct cpufreq_freqs freqs;
- u_int cm_osc;
-
- /*
- * Save this threads cpus_allowed mask.
- */
- cpus_allowed = current->cpus_allowed;
-
- /*
- * Bind to the specified CPU. When this call returns,
- * we should be running on the right CPU.
- */
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
- BUG_ON(cpu != smp_processor_id());
-
- /* get current setting */
- cm_osc = __raw_readl(CM_OSC);
-
- if (machine_is_integrator()) {
- vco.s = (cm_osc >> 8) & 7;
- } else if (machine_is_cintegrator()) {
- vco.s = 1;
- }
- vco.v = cm_osc & 255;
- vco.r = 22;
- freqs.old = icst_hz(&cclk_params, vco) / 1000;
-
- /* icst_hz_to_vco rounds down -- so we need the next
- * larger freq in case of CPUFREQ_RELATION_L.
- */
- if (relation == CPUFREQ_RELATION_L)
- target_freq += 999;
- if (target_freq > policy->max)
- target_freq = policy->max;
- vco = icst_hz_to_vco(&cclk_params, target_freq * 1000);
- freqs.new = icst_hz(&cclk_params, vco) / 1000;
-
- freqs.cpu = policy->cpu;
-
- if (freqs.old == freqs.new) {
- set_cpus_allowed(current, cpus_allowed);
- return 0;
- }
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-
- cm_osc = __raw_readl(CM_OSC);
-
- if (machine_is_integrator()) {
- cm_osc &= 0xfffff800;
- cm_osc |= vco.s << 8;
- } else if (machine_is_cintegrator()) {
- cm_osc &= 0xffffff00;
- }
- cm_osc |= vco.v;
-
- __raw_writel(0xa05f, CM_LOCK);
- __raw_writel(cm_osc, CM_OSC);
- __raw_writel(0, CM_LOCK);
-
- /*
- * Restore the CPUs allowed mask.
- */
- set_cpus_allowed(current, cpus_allowed);
-
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- return 0;
-}
-
-static unsigned int integrator_get(unsigned int cpu)
-{
- cpumask_t cpus_allowed;
- unsigned int current_freq;
- u_int cm_osc;
- struct icst_vco vco;
-
- cpus_allowed = current->cpus_allowed;
-
- set_cpus_allowed(current, cpumask_of_cpu(cpu));
- BUG_ON(cpu != smp_processor_id());
-
- /* detect memory etc. */
- cm_osc = __raw_readl(CM_OSC);
-
- if (machine_is_integrator()) {
- vco.s = (cm_osc >> 8) & 7;
- } else {
- vco.s = 1;
- }
- vco.v = cm_osc & 255;
- vco.r = 22;
-
- current_freq = icst_hz(&cclk_params, vco) / 1000; /* current freq */
-
- set_cpus_allowed(current, cpus_allowed);
-
- return current_freq;
-}
-
-static int integrator_cpufreq_init(struct cpufreq_policy *policy)
-{
-
- /* set default policy and cpuinfo */
- policy->cpuinfo.max_freq = 160000;
- policy->cpuinfo.min_freq = 12000;
- policy->cpuinfo.transition_latency = 1000000; /* 1 ms, assumed */
- policy->cur = policy->min = policy->max = integrator_get(policy->cpu);
-
- return 0;
-}
-
-static struct cpufreq_driver integrator_driver = {
- .verify = integrator_verify_policy,
- .target = integrator_set_target,
- .get = integrator_get,
- .init = integrator_cpufreq_init,
- .name = "integrator",
-};
-
-static int __init integrator_cpu_init(void)
-{
- return cpufreq_register_driver(&integrator_driver);
-}
-
-static void __exit integrator_cpu_exit(void)
-{
- cpufreq_unregister_driver(&integrator_driver);
-}
-
-MODULE_AUTHOR ("Russell M. King");
-MODULE_DESCRIPTION ("cpufreq driver for ARM Integrator CPUs");
-MODULE_LICENSE ("GPL");
-
-module_init(integrator_cpu_init);
-module_exit(integrator_cpu_exit);