void kbase_platform_dvfs_set_level(kbase_device *kbdev, int level)
{
static int prev_level = -1;
int f;
if (level == prev_level)
return;
if (WARN_ON((level >= MALI_DVFS_STEP)||(level < 0)))
panic("invalid level");
#ifdef CONFIG_MALI_T6XX_DVFS
mutex_lock(&mali_set_clock_lock);
#endif
f = mali_dvfs_infotbl[level].mem_freq;
if (level > prev_level) {
exynos5_bus_mif_update(mem_freq_req, f);
kbase_platform_dvfs_set_vol(mali_dvfs_infotbl[level].voltage);
kbase_platform_dvfs_set_clock(kbdev, mali_dvfs_infotbl[level].clock);
} else {
kbase_platform_dvfs_set_clock(kbdev, mali_dvfs_infotbl[level].clock);
kbase_platform_dvfs_set_vol(mali_dvfs_infotbl[level].voltage);
exynos5_bus_mif_update(mem_freq_req, f);
}
#if defined(CONFIG_MALI_T6XX_DEBUG_SYS) && defined(CONFIG_MALI_T6XX_DVFS)
update_time_in_state(prev_level);
#endif
prev_level = level;
#ifdef CONFIG_MALI_T6XX_DVFS
mutex_unlock(&mali_set_clock_lock);
#endif
}
int kbase_platform_dvfs_enable(bool enable, int freq)
{
mali_dvfs_status *dvfs_status;
struct kbase_device *kbdev;
unsigned long flags;
struct exynos_context *platform;
int f;
dvfs_status = &mali_dvfs_status_current;
kbdev = mali_dvfs_status_current.kbdev;
BUG_ON(kbdev == NULL);
platform = (struct exynos_context *)kbdev->platform_context;
mutex_lock(&mali_enable_clock_lock);
if (enable != kbdev->pm.metrics.timer_active) {
if (enable) {
spin_lock_irqsave(&kbdev->pm.metrics.lock, flags);
kbdev->pm.metrics.timer_active = MALI_TRUE;
spin_unlock_irqrestore(&kbdev->pm.metrics.lock, flags);
hrtimer_start(&kbdev->pm.metrics.timer,
HR_TIMER_DELAY_MSEC(KBASE_PM_DVFS_FREQUENCY),
HRTIMER_MODE_REL);
f = mali_dvfs_infotbl[dvfs_status->step].mem_freq;
exynos5_bus_mif_update(mem_freq_req, f);
} else {
spin_lock_irqsave(&kbdev->pm.metrics.lock, flags);
kbdev->pm.metrics.timer_active = MALI_FALSE;
spin_unlock_irqrestore(&kbdev->pm.metrics.lock, flags);
hrtimer_cancel(&kbdev->pm.metrics.timer);
exynos5_bus_mif_update(mem_freq_req, 0);
}
}
if (freq != MALI_DVFS_CURRENT_FREQ) {
spin_lock_irqsave(&mali_dvfs_spinlock, flags);
platform->time_tick = 0;
platform->time_busy = 0;
platform->time_idle = 0;
platform->utilisation = 0;
dvfs_status->step = kbase_platform_dvfs_get_level(freq);
spin_unlock_irqrestore(&mali_dvfs_spinlock, flags);
kbase_platform_dvfs_set_level(dvfs_status->kbdev, dvfs_status->step);
}
mutex_unlock(&mali_enable_clock_lock);
return MALI_TRUE;
}
static void exynos5250_set_frequency(unsigned int old_index,
unsigned int new_index)
{
/* MUX_CORE_SEL = MPLL, ARMCLK uses MPLL for lock time */
clk_set_parent(moutcore, mout_mpll);
if (old_index >= new_index)
exynos5_bus_mif_update(mif_bus_freq, exynos5250_bus_table[new_index]);
clk_set_rate(fout_apll,
exynos5250_freq_table[new_index].frequency * 1000);
if (old_index < new_index)
exynos5_bus_mif_update(mif_bus_freq, exynos5250_bus_table[new_index]);
/* MUX_CORE_SEL = APLL */
clk_set_parent(moutcore, mout_apll);
}