aboutsummaryrefslogtreecommitdiffstats
path: root/arch/arm/plat-omap/cpu-omap.c
diff options
context:
space:
mode:
authorKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-01-27 11:14:02 -0500
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-01-27 11:14:02 -0500
commit6c02b7b1610f873888af20f291c07730889ff0f9 (patch)
tree1b33e6642cc81605b8d37c0bda0abff0ba64fa2d /arch/arm/plat-omap/cpu-omap.c
parentx86: xen: size struct xen_spinlock to always fit in arch_spinlock_t (diff)
parentLinux 3.3-rc1 (diff)
downloadlinux-dev-6c02b7b1610f873888af20f291c07730889ff0f9.tar.xz
linux-dev-6c02b7b1610f873888af20f291c07730889ff0f9.zip
Merge commit 'v3.3-rc1' into stable/for-linus-fixes-3.3
* commit 'v3.3-rc1': (9775 commits) Linux 3.3-rc1 x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits qnx4: don't leak ->BitMap on late failure exits qnx4: reduce the insane nesting in qnx4_checkroot() qnx4: di_fname is an array, for crying out loud... KEYS: Permit key_serial() to be called with a const key pointer keys: fix user_defined key sparse messages ima: fix cred sparse warning uml: fix compile for x86-64 MPILIB: Add a missing ENOMEM check tpm: fix (ACPI S3) suspend regression nvme: fix merge error due to change of 'make_request_fn' fn type xen: using EXPORT_SYMBOL requires including export.h gpio: tps65910: Use correct offset for gpio initialization acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec intel_idle: Split up and provide per CPU initialization func ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2 tg3: Fix single-vector MSI-X code openvswitch: Fix multipart datapath dumps. ipv6: fix per device IP snmp counters ...
Diffstat (limited to 'arch/arm/plat-omap/cpu-omap.c')
-rw-r--r--arch/arm/plat-omap/cpu-omap.c171
1 files changed, 0 insertions, 171 deletions
diff --git a/arch/arm/plat-omap/cpu-omap.c b/arch/arm/plat-omap/cpu-omap.c
deleted file mode 100644
index da4f68dbba1d..000000000000
--- a/arch/arm/plat-omap/cpu-omap.c
+++ /dev/null
@@ -1,171 +0,0 @@
-/*
- * linux/arch/arm/plat-omap/cpu-omap.c
- *
- * CPU frequency scaling for OMAP
- *
- * Copyright (C) 2005 Nokia Corporation
- * Written by Tony Lindgren <tony@atomide.com>
- *
- * Based on cpu-sa1110.c, Copyright (C) 2001 Russell King
- *
- * 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.
- */
-#include <linux/types.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/cpufreq.h>
-#include <linux/delay.h>
-#include <linux/init.h>
-#include <linux/err.h>
-#include <linux/clk.h>
-#include <linux/io.h>
-
-#include <mach/hardware.h>
-#include <plat/clock.h>
-#include <asm/system.h>
-
-#define VERY_HI_RATE 900000000
-
-static struct cpufreq_frequency_table *freq_table;
-
-#ifdef CONFIG_ARCH_OMAP1
-#define MPU_CLK "mpu"
-#else
-#define MPU_CLK "virt_prcm_set"
-#endif
-
-static struct clk *mpu_clk;
-
-/* TODO: Add support for SDRAM timing changes */
-
-static int omap_verify_speed(struct cpufreq_policy *policy)
-{
- if (freq_table)
- return cpufreq_frequency_table_verify(policy, freq_table);
-
- if (policy->cpu)
- return -EINVAL;
-
- cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
- policy->cpuinfo.max_freq);
-
- policy->min = clk_round_rate(mpu_clk, policy->min * 1000) / 1000;
- policy->max = clk_round_rate(mpu_clk, policy->max * 1000) / 1000;
- cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
- policy->cpuinfo.max_freq);
- return 0;
-}
-
-static unsigned int omap_getspeed(unsigned int cpu)
-{
- unsigned long rate;
-
- if (cpu)
- return 0;
-
- rate = clk_get_rate(mpu_clk) / 1000;
- return rate;
-}
-
-static int omap_target(struct cpufreq_policy *policy,
- unsigned int target_freq,
- unsigned int relation)
-{
- struct cpufreq_freqs freqs;
- int ret = 0;
-
- /* Ensure desired rate is within allowed range. Some govenors
- * (ondemand) will just pass target_freq=0 to get the minimum. */
- if (target_freq < policy->min)
- target_freq = policy->min;
- if (target_freq > policy->max)
- target_freq = policy->max;
-
- freqs.old = omap_getspeed(0);
- freqs.new = clk_round_rate(mpu_clk, target_freq * 1000) / 1000;
- freqs.cpu = 0;
-
- if (freqs.old == freqs.new)
- return ret;
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
-#ifdef CONFIG_CPU_FREQ_DEBUG
- printk(KERN_DEBUG "cpufreq-omap: transition: %u --> %u\n",
- freqs.old, freqs.new);
-#endif
- ret = clk_set_rate(mpu_clk, freqs.new * 1000);
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- return ret;
-}
-
-static int __cpuinit omap_cpu_init(struct cpufreq_policy *policy)
-{
- int result = 0;
-
- mpu_clk = clk_get(NULL, MPU_CLK);
- if (IS_ERR(mpu_clk))
- return PTR_ERR(mpu_clk);
-
- if (policy->cpu != 0)
- return -EINVAL;
-
- policy->cur = policy->min = policy->max = omap_getspeed(0);
-
- clk_init_cpufreq_table(&freq_table);
- if (freq_table) {
- result = cpufreq_frequency_table_cpuinfo(policy, freq_table);
- if (!result)
- cpufreq_frequency_table_get_attr(freq_table,
- policy->cpu);
- } else {
- policy->cpuinfo.min_freq = clk_round_rate(mpu_clk, 0) / 1000;
- policy->cpuinfo.max_freq = clk_round_rate(mpu_clk,
- VERY_HI_RATE) / 1000;
- }
-
- /* FIXME: what's the actual transition time? */
- policy->cpuinfo.transition_latency = 300 * 1000;
-
- return 0;
-}
-
-static int omap_cpu_exit(struct cpufreq_policy *policy)
-{
- clk_exit_cpufreq_table(&freq_table);
- clk_put(mpu_clk);
- return 0;
-}
-
-static struct freq_attr *omap_cpufreq_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
-static struct cpufreq_driver omap_driver = {
- .flags = CPUFREQ_STICKY,
- .verify = omap_verify_speed,
- .target = omap_target,
- .get = omap_getspeed,
- .init = omap_cpu_init,
- .exit = omap_cpu_exit,
- .name = "omap",
- .attr = omap_cpufreq_attr,
-};
-
-static int __init omap_cpufreq_init(void)
-{
- return cpufreq_register_driver(&omap_driver);
-}
-
-arch_initcall(omap_cpufreq_init);
-
-/*
- * if ever we want to remove this, upon cleanup call:
- *
- * cpufreq_unregister_driver()
- * cpufreq_frequency_table_put_attr()
- */
-