diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/arm/mach-wmt/wmt_cpuidle.c')
| -rwxr-xr-x | ANDROID_3.4.5/arch/arm/mach-wmt/wmt_cpuidle.c | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_cpuidle.c b/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_cpuidle.c deleted file mode 100755 index e4aaf194..00000000 --- a/ANDROID_3.4.5/arch/arm/mach-wmt/wmt_cpuidle.c +++ /dev/null @@ -1,133 +0,0 @@ -/*++ -linux/arch/arm/mach-wmt/wmt_cpuidle.c - -Copyright (c) 2008 WonderMedia Technologies, Inc. - -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 <http://www.gnu.org/licenses/>. - -WonderMedia Technologies, Inc. -10F, 529, Chung-Cheng Road, Hsin-Tien, Taipei 231, R.O.C. ---*/ - -#include <linux/kernel.h> -#include <linux/init.h> -#include <linux/platform_device.h> -#include <linux/cpuidle.h> -#include <linux/module.h> -#include <linux/io.h> -#include <linux/export.h> -#include <asm/proc-fns.h> -#include <asm/cpuidle.h> - -//#define DEBUG -#ifdef DEBUG -static int dbg_mask = 0; -module_param(dbg_mask, int, S_IRUGO | S_IWUSR); -#define id_dbg(fmt, args...) \ - do {\ - if (dbg_mask) \ - printk(KERN_ERR "[%s]_%d: " fmt, __func__ , __LINE__, ## args);\ - } while(0) -#define id_trace() \ - do {\ - if (dbg_mask) \ - printk(KERN_ERR "trace in %s %d\n", __func__, __LINE__);\ - } while(0) -#else -#define id_dbg(fmt, args...) -#define id_trace() -#endif - -#define WMT_CPU_IDLE_MAX_STATES 2 -extern int wmt_setsyspara(char *varname, unsigned char *varval); -extern int wmt_getsyspara(char *varname, unsigned char *varval, int *varlenex); - -/* Actual code that puts the SoC in different idle states */ -static int wmt_enter_idle(struct cpuidle_device *dev, - struct cpuidle_driver *drv, int index) -{ - cpu_do_idle(); - - return index; -} - -static struct cpuidle_driver wmt_cpuidle_driver = { - .name = "wmt_cpuidle", - .owner = THIS_MODULE, - .en_core_tk_irqen = 1, - /* ARM Wait for interrupt state */ - .states[0] = ARM_CPUIDLE_WFI_STATE, - /* Wait for interrupt and DDR self refresh state */ - .states[1] = { - .enter = wmt_enter_idle, - .exit_latency = 10, - .target_residency = 100000, - .flags = CPUIDLE_FLAG_TIME_VALID, - .name = "ZAC_OFF", - .desc = "WFI and disable ZAC clock", - }, - .state_count = WMT_CPU_IDLE_MAX_STATES, -}; - -static int __init wmt_cpuidle_check_env(void) -{ - int ret = 0; - int varlen = 128; - unsigned int drv_en = 0; - unsigned char buf[128] = {0}; - - /* uboot env name is: wmt.cpuidle.param/wmt.dvfs.param */ - ret = wmt_getsyspara("wmt.cpuidle.param", buf, &varlen); - if (ret) { - printk(KERN_INFO "Can not find uboot env wmt.cpuidle.param\n"); - ret = -ENODATA; - goto out; - } - id_dbg("wmt.cpuidle.param:%s\n", buf); - - sscanf(buf, "%d", &drv_en); - if (!drv_en) { - printk(KERN_INFO "wmt cpuidle driver disaled\n"); - ret = -ENODEV; - goto out; - } - -out: - return ret; -} - -static DEFINE_PER_CPU(struct cpuidle_device, wmt_cpuidle_device); -static int __init wmt_cpuidle_driver_init(void) -{ - struct cpuidle_device *device = NULL; - - if (wmt_cpuidle_check_env()) { - printk(KERN_WARNING "wmt_cpuidle check env failed!\n"); - return -EINVAL; - } - - device = &per_cpu(wmt_cpuidle_device, smp_processor_id()); - device->state_count = WMT_CPU_IDLE_MAX_STATES; - - cpuidle_register_driver(&wmt_cpuidle_driver); - if (cpuidle_register_device(device)) { - printk(KERN_ERR "wmt_cpuidle_driver_init: Failed registering\n"); - return -EIO; - } - - printk(KERN_INFO "WMT cpuidle driver register\n"); - return 0; -} -module_init(wmt_cpuidle_driver_init); - -MODULE_AUTHOR("WonderMedia Technologies, Inc"); -MODULE_DESCRIPTION("WMT CPU idle driver"); -MODULE_LICENSE("Dual BSD/GPL"); |