static int pm_callback_runtime_on(struct kbase_device *kbdev)
{
struct exynos_context *platform = (struct exynos_context *) kbdev->platform_context;
if (!platform)
return -ENODEV;
GPU_LOG(DVFS_INFO, "g3d turn on\n");
#ifdef CONFIG_MALI_EXYNOS_TRACE
KBASE_TRACE_ADD_EXYNOS(kbdev, LSI_GPU_ON, NULL, NULL, 0u, 0u);
#endif /* CONFIG_MALI_EXYNOS_TRACE */
#ifdef CONFIG_MALI_MIDGARD_DVFS
gpu_control_state_set(kbdev, GPU_CONTROL_PREPARE_ON, 0);
#endif /* CONFIG_MALI_MIDGARD_DVFS */
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_ON, 0);
#ifdef GPU_EARLY_CLK_GATING
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_ON_POST, 0);
#endif /* GPU_EARLY_CLK_GATING */
#if (GPU_POWERON_SRC_CLK_OSC == 0)
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->cur_clock);
#endif
return 0;
}
static int gpu_dvfs_on_off(struct kbase_device *kbdev, bool enable)
{
unsigned long flags;
struct exynos_context *platform = (struct exynos_context *)kbdev->platform_context;
if (!platform)
return -ENODEV;
if (enable && !platform->dvfs_status) {
platform->dvfs_status = true;
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->cur_clock);
gpu_dvfs_handler_init(kbdev);
if (!kbdev->pm.metrics.timer_active) {
spin_lock_irqsave(&kbdev->pm.metrics.lock, flags);
kbdev->pm.metrics.timer_active = true;
spin_unlock_irqrestore(&kbdev->pm.metrics.lock, flags);
hrtimer_start(&kbdev->pm.metrics.timer, HR_TIMER_DELAY_MSEC(platform->polling_speed), HRTIMER_MODE_REL);
}
} else if (!enable && platform->dvfs_status) {
platform->dvfs_status = false;
gpu_dvfs_handler_deinit(kbdev);
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, MALI_DVFS_BL_CONFIG_FREQ);
if (kbdev->pm.metrics.timer_active) {
spin_lock_irqsave(&kbdev->pm.metrics.lock, flags);
kbdev->pm.metrics.timer_active = false;
spin_unlock_irqrestore(&kbdev->pm.metrics.lock, flags);
hrtimer_cancel(&kbdev->pm.metrics.timer);
}
} else {
GPU_LOG(DVFS_WARNING, "impossible state to change dvfs status (current: %d, request: %d)\n",
platform->dvfs_status, enable);
return -1;
}
return 0;
}
static void pm_callback_runtime_off(struct kbase_device *kbdev)
{
GPU_LOG(DVFS_INFO, "g3d turn off\n");
#ifdef CONFIG_MALI_EXYNOS_TRACE
KBASE_TRACE_ADD_EXYNOS(kbdev, LSI_GPU_OFF, NULL, NULL, 0u, 0u);
#endif /* CONFIG_MALI_EXYNOS_TRACE */
#ifdef GPU_EARLY_CLK_GATING
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_OFF_POST, 0);
#else
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_OFF, 0);
#endif /* GPU_EARLY_CLK_GATING */
}
static int gpu_tmu_notifier(struct notifier_block *notifier,
unsigned long event, void *v)
{
struct exynos_context *platform = (struct exynos_context *)pkbdev->platform_context;
if (!platform)
return -ENODEV;
if (!platform->tmu_status)
return NOTIFY_OK;
platform->voltage_margin = 0;
if (event == GPU_COLD) {
platform->voltage_margin = VOLTAGE_OFFSET_MARGIN;
} else if (event == GPU_NORMAL) {
gpu_tmu_normal_work(pkbdev);
} else if (event >= GPU_THROTTLING1 && event <= GPU_TRIPPING) {
if (gpu_tmu_hot_check_and_work(pkbdev, event))
GPU_LOG(DVFS_ERROR, "failed to open device");
}
KBASE_TRACE_ADD_EXYNOS(pkbdev, LSI_TMU_VALUE, NULL, NULL, 0u, event);
gpu_control_state_set(pkbdev, GPU_CONTROL_SET_MARGIN, 0);
return NOTIFY_OK;
}
static void pm_callback_runtime_off(kbase_device *kbdev)
{
GPU_LOG(DVFS_INFO, "g3d turn off\n");
KBASE_TRACE_ADD_EXYNOS(kbdev, LSI_GPU_OFF, NULL, NULL, 0u, 0u);
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_OFF, 0);
}
static ssize_t set_clock(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
struct kbase_device *kbdev;
struct exynos_context *platform;
unsigned int freq = 0;
int ret;
kbdev = dev_get_drvdata(dev);
if (!kbdev)
return -ENODEV;
platform = (struct exynos_context *)kbdev->platform_context;
if (!platform)
return -ENODEV;
ret = kstrtoint(buf, 0, &freq);
if (ret) {
GPU_LOG(DVFS_WARNING, "set_clock: invalid value\n");
return -ENOENT;
}
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, freq);
return count;
}
static int pm_callback_runtime_on(kbase_device *kbdev)
{
struct exynos_context *platform = (struct exynos_context *) kbdev->platform_context;
if (!platform)
return -ENODEV;
GPU_LOG(DVFS_INFO, "g3d turn on\n");
KBASE_TRACE_ADD_EXYNOS(kbdev, LSI_GPU_ON, NULL, NULL, 0u, 0u);
#ifdef CONFIG_MALI_T6XX_DVFS
gpu_control_state_set(kbdev, GPU_CONTROL_PREPARE_ON, 0);
#endif /* CONFIG_MALI_T6XX_DVFS */
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_ON, 0);
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->cur_clock);
return 0;
}
static void gpu_power_off(struct kbase_device *kbdev)
{
GPU_LOG(DVFS_INFO, "gpu_power_off\n");
pm_schedule_suspend(kbdev->dev, RUNTIME_PM_DELAY_TIME);
#ifdef GPU_EARLY_CLK_GATING
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_OFF, 0);
#endif /* GPU_EARLY_CLK_GATING */
}
static int gpu_power_on_post(struct kbase_device *kbdev)
{
struct exynos_context *platform = (struct exynos_context *) kbdev->platform_context;
GPU_LOG(DVFS_DEBUG, "power on post\n");
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->cur_clock);
return 1;
}
static int gpu_set_target_freq(int freq)
{
struct kbase_device *kbdev = pkbdev;
struct exynos_context *platform = (struct exynos_context *) kbdev->platform_context;
if (!platform)
return -ENODEV;
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, freq);
return 0;
}
static int gpu_power_on(struct kbase_device *kbdev)
{
if (pm_runtime_resume(kbdev->dev)) {
#ifdef GPU_EARLY_CLK_GATING
GPU_LOG(DVFS_INFO, "already power on\n");
gpu_control_state_set(kbdev, GPU_CONTROL_CLOCK_ON, 0);
#endif /* GPU_EARLY_CLK_GATING */
return 0;
} else {
return 1;
}
}
static void gpu_dvfs_event_proc(struct work_struct *q)
{
int freq = 0;
struct kbase_device *kbdev = pkbdev;
struct exynos_context *platform;
platform = (struct exynos_context *) kbdev->platform_context;
if (!platform)
return;
mutex_lock(&platform->gpu_dvfs_handler_lock);
if (gpu_control_state_set(kbdev, GPU_CONTROL_IS_POWER_ON, 0)) {
freq = gpu_get_target_freq();
gpu_set_target_freq(freq);
}
mutex_unlock(&platform->gpu_dvfs_handler_lock);
}
static ssize_t show_power_state(struct device *dev, struct device_attribute *attr, char *buf)
{
struct kbase_device *kbdev = dev_get_drvdata(dev);
ssize_t ret = 0;
if (gpu_control_state_set(kbdev, GPU_CONTROL_IS_POWER_ON, 0) > 0)
ret += snprintf(buf+ret, PAGE_SIZE-ret, "1");
else
ret += snprintf(buf+ret, PAGE_SIZE-ret, "0");
if (ret < PAGE_SIZE - 1) {
ret += snprintf(buf+ret, PAGE_SIZE-ret, "\n");
} else {
buf[PAGE_SIZE-2] = '\n';
buf[PAGE_SIZE-1] = '\0';
ret = PAGE_SIZE-1;
}
return ret;
}
static ssize_t set_tmu_control(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
{
#ifdef CONFIG_MALI_T6XX_DVFS
struct kbase_device *kbdev = dev_get_drvdata(dev);
struct exynos_context *platform = (struct exynos_context *)kbdev->platform_context;
if (!platform)
return -ENODEV;
if (sysfs_streq("0", buf)) {
if (platform->voltage_margin != 0) {
platform->voltage_margin = 0;
gpu_control_state_set(kbdev, GPU_CONTROL_SET_MARGIN, 0);
}
platform->target_lock_type = TMU_LOCK;
gpu_dvfs_handler_control(kbdev, GPU_HANDLER_DVFS_MAX_UNLOCK, 0);
platform->tmu_status = false;
} else if (sysfs_streq("1", buf))
platform->tmu_status = true;
else
GPU_LOG(DVFS_WARNING, "invalid val -only [0 or 1] is accepted\n");
#endif /* CONFIG_MALI_T6XX_DVFS */
return count;
}
static ssize_t show_time_in_state(struct device *dev, struct device_attribute *attr, char *buf)
{
ssize_t ret = 0;
#ifdef CONFIG_MALI_T6XX_DVFS
struct kbase_device *kbdev;
struct exynos_context *platform;
int i;
kbdev = dev_get_drvdata(dev);
if (!kbdev)
return -ENODEV;
platform = (struct exynos_context *)kbdev->platform_context;
if (!platform)
return -ENODEV;
if (gpu_control_state_set(kbdev, GPU_CONTROL_IS_POWER_ON, 0))
gpu_dvfs_handler_control(kbdev, GPU_HANDLER_UPDATE_TIME_IN_STATE, platform->cur_clock);
else
gpu_dvfs_handler_control(kbdev, GPU_HANDLER_UPDATE_TIME_IN_STATE, 0);
for (i = platform->table_size - 1; i >= 0; i--) {
ret += snprintf(buf+ret, PAGE_SIZE-ret, "%d %llu\n",
platform->table[i].clock,
platform->table[i].time);
}
if (ret >= PAGE_SIZE - 1) {
buf[PAGE_SIZE-2] = '\n';
buf[PAGE_SIZE-1] = '\0';
ret = PAGE_SIZE-1;
}
#else
GPU_LOG(DVFS_WARNING, "G3D DVFS build config is disabled. You can not see\n");
#endif /* CONFIG_MALI_T6XX_DVFS */
return ret;
}
int gpu_dvfs_handler_control(struct kbase_device *kbdev, gpu_dvfs_handler_command command, int param)
{
int ret = 0;
#ifdef CONFIG_MALI_MIDGARD_DVFS
int i;
bool dirty = false;
unsigned long flags;
#endif /* CONFIG_MALI_MIDGARD_DVFS */
struct exynos_context *platform;
platform = (struct exynos_context *)kbdev->platform_context;
if (!platform)
return -ENODEV;
switch (command) {
#ifdef CONFIG_MALI_MIDGARD_DVFS
case GPU_HANDLER_DVFS_ON:
mutex_lock(&platform->gpu_dvfs_handler_lock);
gpu_dvfs_on_off(kbdev, true);
mutex_unlock(&platform->gpu_dvfs_handler_lock);
break;
case GPU_HANDLER_DVFS_OFF:
mutex_lock(&platform->gpu_dvfs_handler_lock);
gpu_dvfs_on_off(kbdev, false);
mutex_unlock(&platform->gpu_dvfs_handler_lock);
break;
case GPU_HANDLER_DVFS_GOVERNOR_CHANGE:
mutex_lock(&platform->gpu_dvfs_handler_lock);
gpu_dvfs_on_off(kbdev, false);
gpu_dvfs_governor_init(kbdev, param);
gpu_dvfs_on_off(kbdev, true);
mutex_unlock(&platform->gpu_dvfs_handler_lock);
break;
case GPU_HANDLER_DVFS_MAX_LOCK:
spin_lock_irqsave(&platform->gpu_dvfs_spinlock, flags);
if ((platform->min_lock >= 0) && (param < platform->min_lock)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
GPU_LOG(DVFS_WARNING, "[G3D] max lock Error: lock is smaller than min lock\n");
return -1;
}
if ((platform->target_lock_type < TMU_LOCK) || (platform->target_lock_type >= NUMBER_LOCK)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
return -1;
}
platform->user_max_lock[platform->target_lock_type] = param;
platform->max_lock = param;
if (platform->max_lock > 0) {
for (i = 0; i < NUMBER_LOCK; i++) {
if (platform->user_max_lock[i] > 0)
platform->max_lock = MIN(platform->max_lock, platform->user_max_lock[i]);
}
} else {
platform->max_lock = param;
}
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
if ((platform->max_lock > 0) && (platform->cur_clock > platform->max_lock))
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->max_lock);
GPU_LOG(DVFS_DEBUG, "[G3D] Lock max clk[%d], user lock[%d], current clk[%d]\n", platform->max_lock,
platform->user_min_lock[platform->target_lock_type], platform->cur_clock);
platform->target_lock_type = -1;
break;
case GPU_HANDLER_DVFS_MIN_LOCK:
spin_lock_irqsave(&platform->gpu_dvfs_spinlock, flags);
if ((platform->max_lock > 0) && (param > platform->max_lock)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
GPU_LOG(DVFS_WARNING, "min lock Error: the lock is larger than max lock\n");
return -1;
}
if ((platform->target_lock_type < TMU_LOCK) || (platform->target_lock_type >= NUMBER_LOCK)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
return -1;
}
platform->user_min_lock[platform->target_lock_type] = param;
platform->min_lock = param;
if (platform->min_lock > 0) {
for (i = 0; i < NUMBER_LOCK; i++) {
if (platform->user_min_lock[i] > 0)
platform->min_lock = MAX(platform->min_lock, platform->user_min_lock[i]);
}
} else {
platform->min_lock = param;
}
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
if ((platform->min_lock > 0) && (platform->cur_clock < platform->min_lock))
gpu_control_state_set(kbdev, GPU_CONTROL_CHANGE_CLK_VOL, platform->min_lock);
GPU_LOG(DVFS_DEBUG, "[G3D] Lock min clk[%d], user lock[%d], current clk[%d]\n", platform->min_lock,
platform->user_min_lock[platform->target_lock_type], platform->cur_clock);
platform->target_lock_type = -1;
break;
case GPU_HANDLER_DVFS_MAX_UNLOCK:
spin_lock_irqsave(&platform->gpu_dvfs_spinlock, flags);
if ((platform->target_lock_type < TMU_LOCK) || (platform->target_lock_type >= NUMBER_LOCK)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
return -1;
}
platform->user_max_lock[platform->target_lock_type] = 0;
platform->max_lock = platform->table[platform->table_size-1].clock;
for (i = 0; i < NUMBER_LOCK; i++) {
if (platform->user_max_lock[i] > 0) {
dirty = true;
platform->max_lock = MIN(platform->user_max_lock[i], platform->max_lock);
}
}
if (!dirty)
platform->max_lock = 0;
platform->target_lock_type = -1;
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
GPU_LOG(DVFS_DEBUG, "[G3D] Unlock max clk\n");
break;
case GPU_HANDLER_DVFS_MIN_UNLOCK:
spin_lock_irqsave(&platform->gpu_dvfs_spinlock, flags);
if ((platform->target_lock_type < TMU_LOCK) || (platform->target_lock_type >= NUMBER_LOCK)) {
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
return -1;
}
platform->user_min_lock[platform->target_lock_type] = 0;
platform->min_lock = platform->table[0].clock;
for (i = 0; i < NUMBER_LOCK; i++) {
if (platform->user_min_lock[i] > 0) {
dirty = true;
platform->min_lock = MAX(platform->user_min_lock[i], platform->min_lock);
}
}
if (!dirty)
platform->min_lock = 0;
platform->target_lock_type = -1;
spin_unlock_irqrestore(&platform->gpu_dvfs_spinlock, flags);
GPU_LOG(DVFS_DEBUG, "[G3D] Unlock min clk\n");
break;
case GPU_HANDLER_INIT_TIME_IN_STATE:
gpu_dvfs_init_time_in_state(platform);
break;
case GPU_HANDLER_UPDATE_TIME_IN_STATE:
gpu_dvfs_update_time_in_state(platform, param);
break;
case GPU_HANDLER_DVFS_GET_LEVEL:
ret = gpu_dvfs_get_level(platform, param);
break;
#endif /* CONFIG_MALI_MIDGARD_DVFS */
case GPU_HANDLER_DVFS_GET_VOLTAGE:
ret = gpu_dvfs_get_voltage(platform, param);
break;
default:
break;
}
return ret;
}
