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authorLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 18:21:02 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2013-04-30 18:21:02 -0400
commit3ed1c478eff8db80e234d5446cb378b503135888 (patch)
treee1c8e0f488ca49c49b5a31fe59add4254381dd4b /arch/unicore32
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/unicore32')
-rw-r--r--arch/unicore32/kernel/Makefile1
-rw-r--r--arch/unicore32/kernel/cpu-ucv2.c93
2 files changed, 0 insertions, 94 deletions
diff --git a/arch/unicore32/kernel/Makefile b/arch/unicore32/kernel/Makefile
index fa497e0efe5a..607a72f2ae35 100644
--- a/arch/unicore32/kernel/Makefile
+++ b/arch/unicore32/kernel/Makefile
@@ -9,7 +9,6 @@ obj-y += setup.o signal.o sys.o stacktrace.o traps.o
9obj-$(CONFIG_MODULES) += ksyms.o module.o 9obj-$(CONFIG_MODULES) += ksyms.o module.o
10obj-$(CONFIG_EARLY_PRINTK) += early_printk.o 10obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
11 11
12obj-$(CONFIG_CPU_FREQ) += cpu-ucv2.o
13obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o 12obj-$(CONFIG_UNICORE_FPU_F64) += fpu-ucf64.o
14 13
15# obj-y for architecture PKUnity v3 14# obj-y for architecture PKUnity v3
diff --git a/arch/unicore32/kernel/cpu-ucv2.c b/arch/unicore32/kernel/cpu-ucv2.c
deleted file mode 100644
index 4a99f62584c7..000000000000
--- a/arch/unicore32/kernel/cpu-ucv2.c
+++ /dev/null
@@ -1,93 +0,0 @@
1/*
2 * linux/arch/unicore32/kernel/cpu-ucv2.c: clock scaling for the UniCore-II
3 *
4 * Code specific to PKUnity SoC and UniCore ISA
5 *
6 * Maintained by GUAN Xue-tao <gxt@mprc.pku.edu.cn>
7 * Copyright (C) 2001-2010 Guan Xuetao
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/kernel.h>
15#include <linux/types.h>
16#include <linux/init.h>
17#include <linux/clk.h>
18#include <linux/cpufreq.h>
19
20#include <mach/hardware.h>
21
22static struct cpufreq_driver ucv2_driver;
23
24/* make sure that only the "userspace" governor is run
25 * -- anything else wouldn't make sense on this platform, anyway.
26 */
27int ucv2_verify_speed(struct cpufreq_policy *policy)
28{
29 if (policy->cpu)
30 return -EINVAL;
31
32 cpufreq_verify_within_limits(policy,
33 policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
34
35 return 0;
36}
37
38static unsigned int ucv2_getspeed(unsigned int cpu)
39{
40 struct clk *mclk = clk_get(NULL, "MAIN_CLK");
41
42 if (cpu)
43 return 0;
44 return clk_get_rate(mclk)/1000;
45}
46
47static int ucv2_target(struct cpufreq_policy *policy,
48 unsigned int target_freq,
49 unsigned int relation)
50{
51 unsigned int cur = ucv2_getspeed(0);
52 struct cpufreq_freqs freqs;
53 struct clk *mclk = clk_get(NULL, "MAIN_CLK");
54
55 cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
56
57 if (!clk_set_rate(mclk, target_freq * 1000)) {
58 freqs.old = cur;
59 freqs.new = target_freq;
60 freqs.cpu = 0;
61 }
62
63 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
64
65 return 0;
66}
67
68static int __init ucv2_cpu_init(struct cpufreq_policy *policy)
69{
70 if (policy->cpu != 0)
71 return -EINVAL;
72 policy->cur = ucv2_getspeed(0);
73 policy->min = policy->cpuinfo.min_freq = 250000;
74 policy->max = policy->cpuinfo.max_freq = 1000000;
75 policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
76 return 0;
77}
78
79static struct cpufreq_driver ucv2_driver = {
80 .flags = CPUFREQ_STICKY,
81 .verify = ucv2_verify_speed,
82 .target = ucv2_target,
83 .get = ucv2_getspeed,
84 .init = ucv2_cpu_init,
85 .name = "UniCore-II",
86};
87
88static int __init ucv2_cpufreq_init(void)
89{
90 return cpufreq_register_driver(&ucv2_driver);
91}
92
93arch_initcall(ucv2_cpufreq_init);