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authorMichael Hennerich <michael.hennerich@analog.com>2008-04-25 04:52:11 +0800
committerBryan Wu <cooloney@kernel.org>2008-04-25 04:52:11 +0800
commitfe44193c55e26b9b835722b5ee2519972f59c540 (patch)
tree43c2c45bd8b94b51f02192261a3d67aec6e516c5 /arch/blackfin/mach-bf533
parent[Blackfin] arch: Equalize include files: Add PLL_DIV Masks (diff)
downloadlinux-dev-fe44193c55e26b9b835722b5ee2519972f59c540.tar.xz
linux-dev-fe44193c55e26b9b835722b5ee2519972f59c540.zip
[Blackfin] arch: Functional power management support: Remove broken cpu frequency scaling drivers
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to '')
-rw-r--r--arch/blackfin/mach-bf533/Makefile2
-rw-r--r--arch/blackfin/mach-bf533/cpu.c158
2 files changed, 0 insertions, 160 deletions
diff --git a/arch/blackfin/mach-bf533/Makefile b/arch/blackfin/mach-bf533/Makefile
index 8cce1736360d..aa9f2647ee0c 100644
--- a/arch/blackfin/mach-bf533/Makefile
+++ b/arch/blackfin/mach-bf533/Makefile
@@ -5,5 +5,3 @@
extra-y := head.o
obj-y := ints-priority.o dma.o
-
-obj-$(CONFIG_CPU_FREQ) += cpu.o
diff --git a/arch/blackfin/mach-bf533/cpu.c b/arch/blackfin/mach-bf533/cpu.c
deleted file mode 100644
index b7a0e0fbd9af..000000000000
--- a/arch/blackfin/mach-bf533/cpu.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/*
- * File: arch/blackfin/mach-bf533/cpu.c
- * Based on:
- * Author: michael.kang@analog.com
- *
- * Created:
- * Description: clock scaling for the bf533
- *
- * Modified:
- * Copyright 2004-2006 Analog Devices Inc.
- *
- * Bugs: Enter bugs at http://blackfin.uclinux.org/
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, see the file COPYING, or write
- * to the Free Software Foundation, Inc.,
- * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/init.h>
-#include <linux/cpufreq.h>
-#include <asm/dpmc.h>
-#include <linux/fs.h>
-#include <asm/bfin-global.h>
-
-/* CONFIG_CLKIN_HZ=11059200 */
-#define VCO5 (CONFIG_CLKIN_HZ*45) /*497664000 */
-#define VCO4 (CONFIG_CLKIN_HZ*36) /*398131200 */
-#define VCO3 (CONFIG_CLKIN_HZ*27) /*298598400 */
-#define VCO2 (CONFIG_CLKIN_HZ*18) /*199065600 */
-#define VCO1 (CONFIG_CLKIN_HZ*9) /*99532800 */
-#define VCO(x) VCO##x
-
-#define FREQ(x) {VCO(x),VCO(x)/4},{VCO(x),VCO(x)/2},{VCO(x),VCO(x)}
-/* frequency */
-static struct cpufreq_frequency_table bf533_freq_table[] = {
- FREQ(1),
- FREQ(3),
- {VCO4, VCO4 / 2}, {VCO4, VCO4},
- FREQ(5),
- {0, CPUFREQ_TABLE_END},
-};
-
-/*
- * dpmc_fops->ioctl()
- * static int dpmc_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
- */
-static int bf533_getfreq(unsigned int cpu)
-{
- unsigned long cclk_mhz, vco_mhz;
-
- /* The driver only support single cpu */
- if (cpu == 0)
- dpmc_fops.ioctl(NULL, NULL, IOCTL_GET_CORECLOCK, &cclk_mhz);
- else
- cclk_mhz = -1;
- return cclk_mhz;
-}
-
-static int bf533_target(struct cpufreq_policy *policy,
- unsigned int target_freq, unsigned int relation)
-{
- unsigned long cclk_mhz;
- unsigned long vco_mhz;
- unsigned long flags;
- unsigned int index, vco_index;
- int i;
-
- struct cpufreq_freqs freqs;
- if (cpufreq_frequency_table_target(policy, bf533_freq_table, target_freq, relation, &index))
- return -EINVAL;
- cclk_mhz = bf533_freq_table[index].frequency;
- vco_mhz = bf533_freq_table[index].index;
-
- dpmc_fops.ioctl(NULL, NULL, IOCTL_CHANGE_FREQUENCY, &vco_mhz);
- freqs.old = bf533_getfreq(0);
- freqs.new = cclk_mhz;
- freqs.cpu = 0;
-
- pr_debug("cclk begin change to cclk %d,vco=%d,index=%d,target=%d,oldfreq=%d\n",
- cclk_mhz, vco_mhz, index, target_freq, freqs.old);
-
- cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
- local_irq_save(flags);
- dpmc_fops.ioctl(NULL, NULL, IOCTL_SET_CCLK, &cclk_mhz);
- local_irq_restore(flags);
- cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
-
- vco_mhz = get_vco();
- cclk_mhz = get_cclk();
- return 0;
-}
-
-/* make sure that only the "userspace" governor is run -- anything else wouldn't make sense on
- * this platform, anyway.
- */
-static int bf533_verify_speed(struct cpufreq_policy *policy)
-{
- return cpufreq_frequency_table_verify(policy, &bf533_freq_table);
-}
-
-static int __init __bf533_cpu_init(struct cpufreq_policy *policy)
-{
- int result;
-
- if (policy->cpu != 0)
- return -EINVAL;
-
- policy->cpuinfo.transition_latency = CPUFREQ_ETERNAL;
- /*Now ,only support one cpu */
- policy->cur = bf533_getfreq(0);
- cpufreq_frequency_table_get_attr(bf533_freq_table, policy->cpu);
- return cpufreq_frequency_table_cpuinfo(policy, bf533_freq_table);
-}
-
-static struct freq_attr *bf533_freq_attr[] = {
- &cpufreq_freq_attr_scaling_available_freqs,
- NULL,
-};
-
-static struct cpufreq_driver bf533_driver = {
- .verify = bf533_verify_speed,
- .target = bf533_target,
- .get = bf533_getfreq,
- .init = __bf533_cpu_init,
- .name = "bf533",
- .owner = THIS_MODULE,
- .attr = bf533_freq_attr,
-};
-
-static int __init bf533_cpu_init(void)
-{
- return cpufreq_register_driver(&bf533_driver);
-}
-
-static void __exit bf533_cpu_exit(void)
-{
- cpufreq_unregister_driver(&bf533_driver);
-}
-
-MODULE_AUTHOR("Mickael Kang");
-MODULE_DESCRIPTION("cpufreq driver for BF533 CPU");
-MODULE_LICENSE("GPL");
-
-module_init(bf533_cpu_init);
-module_exit(bf533_cpu_exit);