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#include <linux/init.h>
#include <linux/suspend.h>
#include <linux/kobject.h>
#include <linux/fs.h>
#include <linux/io.h>
#include <linux/errno.h>
#include <linux/mm.h>
#include <linux/io.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/wakelock.h>
#include <linux/module.h>
#include <linux/kthread.h>
#include <soc/sprd/common.h>
#include <soc/sprd/hardware.h>
#include <soc/sprd/sci.h>
#include <linux/earlysuspend.h>
#include <soc/sprd/sci_glb_regs.h>
#include <linux/random.h>
#include <asm/hardware/cache-l2x0.h>
#include <asm/cacheflush.h>
#include <asm/suspend.h>
#include <linux/vmalloc.h>
#include <linux/cpu.h>
#include <linux/printk.h>
#include <soc/sprd/__sc8830_dmc_dfs.h>
#include "soc/sprd/chip_x30g/dram_phy_28nm.h"
#ifdef EMC_FREQ_AUTO_TEST
static u32 dfs_freq_array[] = {
//192,
200,
//384,
400
//466
//533
};
static struct wake_lock dfs_test_lock;
static DEFINE_SPINLOCK(emc_freq_spinlock);
extern int scxx30_all_nonboot_cpus_died(void);
extern u32 emc_clk_set(u32 new_clk, u32 sene);
static int emc_freq_test_thread(void * data)
{
u32 i = 0;
unsigned long spinlock_flags = 0;
msleep(17000);
wake_lock(&dfs_test_lock);
/* close cpu. */
// cpu_down(1);
// msleep(200);
// cpu_down(2);
// msleep(200);
// cpu_down(3);
// msleep(2000);
while(1){
spin_lock_irqsave(&emc_freq_spinlock, spinlock_flags);
/* check current cpu number is 1 or not. */
if (scxx30_all_nonboot_cpus_died() != 1){
printk("*** %s, num_online_cpus:%d ***\n", __func__, num_online_cpus() );
return 0;
}
//set_current_state(TASK_INTERRUPTIBLE);
// i = get_random_int();
// i = i % 2;//(sizeof(dfs_freq_array)/ sizeof(dfs_freq_array[0]));
printk("emc_freq_test_thread i = %x, clk=%d\n", i, dfs_freq_array[i]);
emc_clk_set(dfs_freq_array[i], 0);
printk("e\n");
i++;
if (i >= 2) {
i = 0;
}
/* resume irq, cpu and so on. */
spin_unlock_irqrestore(&emc_freq_spinlock, spinlock_flags);
// schedule_timeout(10);
msleep(50);
}
/* open cpu */
// cpu_up(1);
// cpu_up(2);
// cpu_up(3);
return 0;
}
/* used this test must make sure cpu is only one. */
/* platsmp.c : sci_get_core_num() return 1 means signal core */
void __emc_freq_test(void)
{
struct task_struct * task;
wake_lock_init(&dfs_test_lock, WAKE_LOCK_SUSPEND,"emc_freq_test_wakelock");
task = kthread_create(emc_freq_test_thread, NULL, "emc freq test test");
if (task == 0) {
printk("Can't crate emc freq test thread!\n");
}else {
wake_up_process(task);
}
}
#endif
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