static ssize_t cpufreq_max_limit_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
int val;
unsigned int cpufreq_level;
int lock_ret;
ssize_t ret = -EINVAL;
struct cpufreq_policy *policy;
mutex_lock(&cpufreq_limit_mutex);
if (sscanf(buf, "%d", &val) != 1) {
printk(KERN_ERR "%s: Invalid cpufreq format\n", __func__);
goto out;
}
if (val == -1) { /* Unlock request */
if (cpufreq_max_limit_val != -1) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_USER);
/* Yank555.lu - unlock now means set lock to scaling max to support powersave mode properly */
/* cpufreq_max_limit_val = -1; */
policy = cpufreq_cpu_get(0);
if (get_cpufreq_level(policy->max, &cpufreq_level) == VALID_LEVEL) {
lock_ret = exynos_cpufreq_upper_limit(DVFS_LOCK_ID_USER, cpufreq_level);
cpufreq_max_limit_val = policy->max;
cpufreq_max_limit_coupled = SCALING_MAX_COUPLED;
}
} else /* Already unlocked */
printk(KERN_ERR "%s: Unlock request is ignored\n",
__func__);
} else { /* Lock request */
if (get_cpufreq_level((unsigned int)val, &cpufreq_level) == VALID_LEVEL) {
if (cpufreq_max_limit_val != -1) {
/* Unlock the previous lock */
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_USER);
cpufreq_max_limit_coupled = SCALING_MAX_UNCOUPLED; /* if a limit existed, uncouple */
} else {
cpufreq_max_limit_coupled = SCALING_MAX_COUPLED; /* if no limit existed, we're booting, couple */
}
lock_ret = exynos_cpufreq_upper_limit(DVFS_LOCK_ID_USER, cpufreq_level);
/* ret of exynos_cpufreq_upper_limit is meaningless.
0 is fail? success? */
cpufreq_max_limit_val = val;
} else /* Invalid lock request --> No action */
printk(KERN_ERR "%s: Lock request is invalid\n",
__func__);
}
ret = n;
out:
mutex_unlock(&cpufreq_limit_mutex);
return ret;
}
static ssize_t cpufreq_max_limit_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
int val;
unsigned int cpufreq_level;
int lock_ret;
ssize_t ret = -EINVAL;
struct cpufreq_policy *policy;
mutex_lock(&cpufreq_limit_mutex);
if (sscanf(buf, "%d", &val) != 1) {
printk(KERN_ERR "%s: Invalid cpufreq format\n", __func__);
goto out;
}
if (val == -1) { /* Unlock request */
if (cpufreq_max_limit_val != -1) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_USER);
cpufreq_max_limit_val = -1;
} else /* Already unlocked */
printk(KERN_ERR "%s: Unlock request is ignored\n",
__func__);
} else { /* Lock request */
if (val < 1400000) {
val = 1000000;
if (get_cpufreq_level((unsigned int)val, &cpufreq_level)
== VALID_LEVEL) {
if (cpufreq_max_limit_val != -1)
/* Unlock the previous lock */
exynos_cpufreq_upper_limit_free(
DVFS_LOCK_ID_USER);
lock_ret = exynos_cpufreq_upper_limit(
DVFS_LOCK_ID_USER, cpufreq_level);
/* ret of exynos_cpufreq_upper_limit is meaningless.
0 is fail? success? */
cpufreq_max_limit_val = val;
} else /* Invalid lock request --> No action */
printk(KERN_ERR "%s: Lock request is invalid\n",
__func__);
}
}
ret = n;
out:
mutex_unlock(&cpufreq_limit_mutex);
return ret;
}
static void tmu_monitor(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct tmu_info *info =
container_of(delayed_work, struct tmu_info, polling);
struct tmu_data *data = info->dev->platform_data;
int cur_temp;
cur_temp = get_cur_temp(info);
#ifdef CONFIG_TMU_DEBUG
cancel_delayed_work(&info->monitor);
pr_info("Current: %dc, FLAG=%d\n",
cur_temp, info->tmu_state);
#endif
mutex_lock(&tmu_lock);
switch (info->tmu_state) {
#if defined(CONFIG_TC_VOLTAGE)
case TMU_STATUS_TC:
if (cur_temp >= data->ts.stop_tc) {
if (exynos_tc_volt(info, 0) < 0)
pr_err("%s\n", __func__);
info->tmu_state = TMU_STATUS_NORMAL;
already_limit = 0;
pr_info("TC limit is released!!\n");
} else if (cur_temp <= data->ts.start_tc && !already_limit) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("%s\n", __func__);
already_limit = 1;
}
break;
#endif
case TMU_STATUS_NORMAL:
#ifdef CONFIG_TMU_DEBUG
queue_delayed_work_on(0, tmu_monitor_wq,
&info->monitor, info->sampling_rate);
#endif
__raw_writel((CLEAR_RISE_INT|CLEAR_FALL_INT),
info->tmu_base + INTCLEAR);
enable_irq(info->irq);
mutex_unlock(&tmu_lock);
return;
case TMU_STATUS_THROTTLED:
if (cur_temp >= data->ts.start_warning) {
info->tmu_state = TMU_STATUS_WARNING;
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
already_limit = 0;
} else if (cur_temp > data->ts.stop_throttle &&
cur_temp < data->ts.start_warning &&
!already_limit) {
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->throttle_freq);
already_limit = 1;
} else if (cur_temp <= data->ts.stop_throttle) {
info->tmu_state = TMU_STATUS_NORMAL;
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
pr_info("Freq limit is released!!\n");
already_limit = 0;
}
break;
case TMU_STATUS_WARNING:
if (cur_temp >= data->ts.start_tripping) {
info->tmu_state = TMU_STATUS_TRIPPED;
already_limit = 0;
} else if (cur_temp > data->ts.stop_warning && \
cur_temp < data->ts.start_tripping &&
!already_limit) {
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->warning_freq);
already_limit = 1;
} else if (cur_temp <= data->ts.stop_warning) {
info->tmu_state = TMU_STATUS_THROTTLED;
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
already_limit = 0;
}
break;
case TMU_STATUS_TRIPPED:
mutex_unlock(&tmu_lock);
tmu_tripped_cb();
return;
default:
break;
}
/* memory throttling */
if (cur_temp >= data->ts.start_mem_throttle
&& !(auto_refresh_changed)) {
pr_info("set auto_refresh 1.95us\n");
set_refresh_rate(info->auto_refresh_tq0);
auto_refresh_changed = 1;
} else if (cur_temp <= (data->ts.stop_mem_throttle)
&& (auto_refresh_changed)) {
pr_info("set auto_refresh 3.9us\n");
set_refresh_rate(info->auto_refresh_normal);
auto_refresh_changed = 0;
}
queue_delayed_work_on(0, tmu_monitor_wq,
&info->polling, info->sampling_rate);
mutex_unlock(&tmu_lock);
return;
}
static void exynos4_handler_tmu_state(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct s5p_tmu_info *info =
container_of(delayed_work, struct s5p_tmu_info, polling);
struct s5p_platform_tmu *data = info->dev->platform_data;
unsigned int cur_temp;
static int auto_refresh_changed;
static int check_handle;
int trend = 0;
int cpu = 0;
mutex_lock(&tmu_lock);
cur_temp = get_curr_temp(info);
trend = cur_temp - info->last_temperature;
pr_debug("curr_temp = %u, temp_diff = %d\n", cur_temp, trend);
switch (info->tmu_state) {
#if defined(CONFIG_TC_VOLTAGE)
case TMU_STATUS_TC:
/* lock has priority than unlock */
if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
} else if (cur_temp >= data->ts.stop_tc) {
if (exynos_tc_volt(info, 0) < 0) {
pr_err("TMU: unlock error!\n");
} else {
info->tmu_state = TMU_STATUS_NORMAL;
pr_info("change state: tc -> normal.\n");
}
}
/* free if upper limit is locked */
if (check_handle) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle = 0;
}
break;
#endif
case TMU_STATUS_NORMAL:
/* 1. change state: 1st-throttling */
if (cur_temp >= data->ts.start_1st_throttle) {
info->tmu_state = TMU_STATUS_THROTTLED;
pr_info("change state: normal->throttle.\n");
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
} else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0) {
pr_err("TMU: lock error!\n");
} else {
info->tmu_state = TMU_STATUS_TC;
pr_info("change state: normal->tc.\n");
}
#endif
/* 2. polling end and uevent */
} else if ((cur_temp <= data->ts.stop_1st_throttle)
&& (cur_temp <= data->ts.stop_mem_throttle)) {
if (check_handle & THROTTLE_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(THROTTLE_FLAG);
}
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("normal: free cpufreq_limit & interrupt enable.\n");
for_each_online_cpu(cpu)
cpufreq_update_policy(cpu);
/* clear to prevent from interfupt by peindig bit */
__raw_writel(INTCLEARALL,
info->tmu_base + EXYNOS4_TMU_INTCLEAR);
exynos_interrupt_enable(info, 1);
enable_irq(info->irq);
mutex_unlock(&tmu_lock);
return;
}
break;
case TMU_STATUS_THROTTLED:
/* 1. change state: 2nd-throttling or warning */
if (cur_temp >= data->ts.start_2nd_throttle) {
info->tmu_state = TMU_STATUS_WARNING;
pr_info("change state: 1st throttle->2nd throttle.\n");
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
} else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
else
info->tmu_state = TMU_STATUS_TC;
#endif
/* 2. cpufreq limitation and uevent */
} else if ((cur_temp >= data->ts.start_1st_throttle) &&
!(check_handle & THROTTLE_FLAG)) {
if (check_handle & WARNING_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(WARNING_FLAG);
}
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->cpufreq_level_1st_throttle);
check_handle |= THROTTLE_FLAG;
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("throttling: set cpufreq upper limit.\n");
/* 3. change state: normal */
} else if ((cur_temp <= data->ts.stop_1st_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_NORMAL;
pr_info("change state: 1st throttle->normal.\n");
}
break;
case TMU_STATUS_WARNING:
/* 1. change state: tripping */
if (cur_temp >= data->ts.start_tripping) {
info->tmu_state = TMU_STATUS_TRIPPED;
pr_info("change state: 2nd throttle->trip\n");
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
} else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
else
info->tmu_state = TMU_STATUS_TC;
#endif
/* 2. cpufreq limitation and uevent */
} else if ((cur_temp >= data->ts.start_2nd_throttle) &&
!(check_handle & WARNING_FLAG)) {
if (check_handle & THROTTLE_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(THROTTLE_FLAG);
}
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->cpufreq_level_2nd_throttle);
check_handle |= WARNING_FLAG;
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("2nd throttle: cpufreq is limited.\n");
/* 3. change state: 1st-throttling */
} else if ((cur_temp <= data->ts.stop_2nd_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_THROTTLED;
pr_info("change state: 2nd throttle->1st throttle, "
"and release cpufreq upper limit.\n");
}
break;
case TMU_STATUS_TRIPPED:
/* 1. call uevent to shut-down */
if ((cur_temp >= data->ts.start_tripping) &&
(trend > 0) && !(check_handle & TRIPPING_FLAG)) {
notify_change_of_tmu_state(info);
pr_info("tripping: on waiting shutdown.\n");
check_handle |= TRIPPING_FLAG;
pr_debug("check_handle = %d\n", check_handle);
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
} else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
else
info->tmu_state = TMU_STATUS_TC;
#endif
/* 2. change state: 2nd-throttling or warning */
} else if ((cur_temp <= data->ts.stop_2nd_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_WARNING;
pr_info("change state: trip->2nd throttle, "
"Check! occured only test mode.\n");
}
/* 3. chip protection: kernel panic as SW workaround */
if ((cur_temp >= data->ts.start_emergency) && (trend > 0)) {
panic("Emergency!!!! tripping is not treated!\n");
/* clear to prevent from interfupt by peindig bit */
__raw_writel(INTCLEARALL,
info->tmu_state + EXYNOS4_TMU_INTCLEAR);
enable_irq(info->irq);
mutex_unlock(&tmu_lock);
return;
}
break;
case TMU_STATUS_INIT:
/* sned tmu initial status to platform */
disable_irq(info->irq);
if (cur_temp >= data->ts.start_tripping)
info->tmu_state = TMU_STATUS_TRIPPED;
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
else
info->tmu_state = TMU_STATUS_TC;
}
#endif
else if (cur_temp >= data->ts.start_2nd_throttle)
info->tmu_state = TMU_STATUS_WARNING;
else if (cur_temp >= data->ts.start_1st_throttle)
info->tmu_state = TMU_STATUS_THROTTLED;
else if (cur_temp <= data->ts.stop_1st_throttle)
info->tmu_state = TMU_STATUS_NORMAL;
notify_change_of_tmu_state(info);
pr_info("%s: inform to init state to platform.\n", __func__);
break;
default:
pr_warn("Bug: checked tmu_state.\n");
if (cur_temp >= data->ts.start_tripping)
info->tmu_state = TMU_STATUS_TRIPPED;
#if defined(CONFIG_TC_VOLTAGE)
/* check whether temp compesation need or not */
else if (cur_temp <= data->ts.start_tc) {
if (exynos_tc_volt(info, 1) < 0)
pr_err("TMU: lock error!\n");
else
info->tmu_state = TMU_STATUS_TC;
}
#endif
else
info->tmu_state = TMU_STATUS_WARNING;
break;
} /* end */
info->last_temperature = cur_temp;
/* reschedule the next work */
queue_delayed_work_on(0, tmu_monitor_wq, &info->polling,
info->sampling_rate);
mutex_unlock(&tmu_lock);
return;
}
static void tmu_monitor(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct tmu_info *info =
container_of(delayed_work, struct tmu_info, polling);
struct tmu_data *data = info->dev->platform_data;
unsigned char cur_temp;
#ifdef CONFIG_TMU_DEBUG
cancel_delayed_work(&info->monitor);
#endif
cur_temp = get_cur_temp(info);
pr_info("Current: %dc, FLAG=%d\n",
cur_temp, info->tmu_state);
switch (info->tmu_state) {
case TMU_STATUS_NORMAL:
#ifdef CONFIG_TMU_DEBUG
queue_delayed_work_on(0, tmu_monitor_wq, &info->monitor,
usecs_to_jiffies(1000 * 1000));
#endif
cancel_delayed_work(&info->polling);
enable_irq(info->irq);
break;
case TMU_STATUS_THROTTLED:
if (cur_temp >= data->ts.start_warning)
info->tmu_state = TMU_STATUS_WARNING;
else if (cur_temp > data->ts.stop_throttle &&
cur_temp < data->ts.start_warning)
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
data->cpulimit.throttle_freq);
else if (cur_temp <= data->ts.stop_throttle) {
info->tmu_state = TMU_STATUS_NORMAL;
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
}
queue_delayed_work_on(0, tmu_monitor_wq,
&info->polling, usecs_to_jiffies(500 * 1000));
break;
case TMU_STATUS_WARNING:
if (cur_temp >= data->ts.start_tripping)
info->tmu_state = TMU_STATUS_TRIPPED;
else if (cur_temp > data->ts.stop_warning && \
cur_temp < data->ts.start_tripping)
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
data->cpulimit.warning_freq);
else if (cur_temp <= data->ts.stop_warning) {
info->tmu_state = TMU_STATUS_THROTTLED;
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
}
queue_delayed_work_on(0, tmu_monitor_wq,
&info->polling, usecs_to_jiffies(500 * 1000));
break;
case TMU_STATUS_TRIPPED:
tmu_tripped_cb();
queue_delayed_work_on(0, tmu_monitor_wq,
&info->polling, usecs_to_jiffies(5000 * 1000));
default:
break;
}
return;
}
static void ir_remocon_send(struct ir_remocon_data *data)
{
unsigned int period, off_period = 0;
unsigned int duty;
unsigned int on, off = 0;
unsigned int i, j;
int ret;
static int cpu_lv = -1;
if (data->pwr_en == -1) {
regulator = regulator_get(NULL, "vled_3.3v");
if (IS_ERR(regulator))
goto out;
regulator_enable(regulator);
regulator_status = 1;
}
if (data->pwr_en != -1)
gpio_direction_output(data->pwr_en, 1);
__udelay(1000);
if (cpu_lv == -1) {
if (data->pwr_en == -1)
exynos_cpufreq_get_level(500000, &cpu_lv);
else
exynos_cpufreq_get_level(800000, &cpu_lv);
}
ret = exynos_cpufreq_lock(DVFS_LOCK_ID_IR_LED, cpu_lv);
if (ret < 0)
pr_err("%s: fail to lock cpufreq\n", __func__);
ret = exynos_cpufreq_upper_limit(DVFS_LOCK_ID_IR_LED, cpu_lv);
if (ret < 0)
pr_err("%s: fail to lock cpufreq(limit)\n", __func__);
if (data->pwr_en == -1)
period = (MICRO_SEC/data->signal[0])-2;
else
period = (MICRO_SEC/data->signal[0])-1;
duty = period/4;
on = duty;
off = period - duty;
local_irq_disable();
for (i = 1; i < MAX_SIZE; i += 2) {
if (data->signal[i] == 0)
break;
for (j = 0; j < data->signal[i]; j++) {
gpio_direction_output(data->gpio, 1);
__udelay(on);
gpio_direction_output(data->gpio, 0);
__udelay(off);
}
if (data->pwr_en == -1)
period = (MICRO_SEC/data->signal[0]);
else
period = (MICRO_SEC/data->signal[0])+1;
off_period = data->signal[i+1]*period;
if (off_period <= 9999) {
if (off_period > 1000) {
__udelay(off_period % 1000);
mdelay(off_period/1000);
} else
__udelay(off_period);
} else {
local_irq_enable();
__udelay(off_period % 1000);
mdelay(off_period/1000);
local_irq_disable();
}
}
gpio_direction_output(data->gpio, 1);
__udelay(on);
gpio_direction_output(data->gpio, 0);
__udelay(off);
local_irq_enable();
pr_info("%s end!\n", __func__);
exynos_cpufreq_lock_free(DVFS_LOCK_ID_IR_LED);
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_IR_LED);
if (data->pwr_en != -1)
gpio_direction_output(data->pwr_en, 0);
if ((data->pwr_en == -1) && (regulator_status == 1)) {
regulator_force_disable(regulator);
regulator_put(regulator);
regulator_status = -1;
}
out: ;
}
static void exynos4_handler_tmu_state(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct s5p_tmu_info *info =
container_of(delayed_work, struct s5p_tmu_info, polling);
struct s5p_platform_tmu *data = info->dev->platform_data;
unsigned int cur_temp;
static int auto_refresh_changed;
static int check_handle;
int trend = 0;
mutex_lock(&tmu_lock);
cur_temp = get_curr_temp(info);
trend = cur_temp - info->last_temperature;
pr_debug("curr_temp = %d, temp_diff = %d\n", cur_temp, trend);
switch (info->tmu_state) {
case TMU_STATUS_TC:
#if defined(CONFIG_TC_VOLTAGE)
if (cur_temp >= data->ts.stop_tc) {
if (check_handle & TC_VOLTAGE_FLAG) {
exynos_cpufreq_lock_free(DVFS_LOCK_ID_TMU);
#ifdef CONFIG_BUSFREQ_OPP
if (dev_unlock(info->bus_dev, info->dev))
pr_err("TMU: dev_unlock error!\n");
#endif
if (mali_voltage_lock_pop() < 0)
pr_err("TMU: g3d_pop error\n");
check_handle &= ~(TC_VOLTAGE_FLAG);
pr_info("change state: tc -> normal.\n");
}
info->tmu_state = TMU_STATUS_NORMAL;
} else if (cur_temp <= data->ts.start_tc) {
if (!(check_handle & TC_VOLTAGE_FLAG)) {
if (exynos_cpufreq_lock(DVFS_LOCK_ID_TMU,
info->cpulevel_tc) < 0)
pr_err("TMU: cpu_lock error!\n");
#ifdef CONFIG_BUSFREQ_OPP
if (dev_lock(info->bus_dev, info->dev,
info->busfreq_tc) < 0)
pr_err("TMU: bus_lock error\n");
#endif
if (mali_voltage_lock_push(data->temp_compensate.g3d_volt) < 0)
pr_err("TMU: g3d_push error [%u] uV\n",
data->temp_compensate.g3d_volt);
check_handle |= TC_VOLTAGE_FLAG;
}
}
#endif
break;
case TMU_STATUS_NORMAL:
/* 1. change state: 1st-throttling */
if (cur_temp >= data->ts.start_1st_throttle) {
info->tmu_state = TMU_STATUS_THROTTLED;
pr_info("change state: normal->throttle.\n");
/* 2. polling end and uevent */
#if defined(CONFIG_TC_VOLTAGE)
} else if ((cur_temp <= data->ts.stop_1st_throttle)
&& (cur_temp >= data->ts.stop_tc)
&& (cur_temp <= data->ts.stop_mem_throttle)) {
#else
} else if ((cur_temp <= data->ts.stop_1st_throttle)
&& (cur_temp <= data->ts.stop_mem_throttle)) {
#endif
if (check_handle & THROTTLE_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(THROTTLE_FLAG);
}
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("normal: free cpufreq_limit & interrupt enable.\n");
/* clear to prevent from interfupt by peindig bit */
__raw_writel(INTCLEARALL,
info->tmu_base + EXYNOS4_TMU_INTCLEAR);
exynos_interrupt_enable(info, 1);
enable_irq(info->irq);
mutex_unlock(&tmu_lock);
return;
}
break;
case TMU_STATUS_THROTTLED:
/* 1. change state: 2nd-throttling or warning */
if (cur_temp >= data->ts.start_2nd_throttle) {
info->tmu_state = TMU_STATUS_WARNING;
pr_info("change state: 1st throttle->2nd throttle.\n");
/* 2. cpufreq limitation and uevent */
} else if ((cur_temp >= data->ts.start_1st_throttle) &&
!(check_handle & THROTTLE_FLAG)) {
if (check_handle & WARNING_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(WARNING_FLAG);
}
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->cpufreq_level_1st_throttle);
check_handle |= THROTTLE_FLAG;
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("throttling: set cpufreq upper limit.\n");
/* 3. change state: normal */
} else if ((cur_temp <= data->ts.stop_1st_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_NORMAL;
pr_info("change state: 1st throttle->normal.\n");
}
break;
case TMU_STATUS_WARNING:
/* 1. change state: tripping */
if (cur_temp >= data->ts.start_tripping) {
info->tmu_state = TMU_STATUS_TRIPPED;
pr_info("change state: 2nd throttle->trip\n");
/* 2. cpufreq limitation and uevent */
} else if ((cur_temp >= data->ts.start_2nd_throttle) &&
!(check_handle & WARNING_FLAG)) {
if (check_handle & THROTTLE_FLAG) {
exynos_cpufreq_upper_limit_free(DVFS_LOCK_ID_TMU);
check_handle &= ~(THROTTLE_FLAG);
}
exynos_cpufreq_upper_limit(DVFS_LOCK_ID_TMU,
info->cpufreq_level_2nd_throttle);
check_handle |= WARNING_FLAG;
pr_debug("check_handle = %d\n", check_handle);
notify_change_of_tmu_state(info);
pr_info("2nd throttle: cpufreq is limited.\n");
/* 3. change state: 1st-throttling */
} else if ((cur_temp <= data->ts.stop_2nd_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_THROTTLED;
pr_info("change state: 2nd throttle->1st throttle, "
"and release cpufreq upper limit.\n");
}
break;
case TMU_STATUS_TRIPPED:
/* 1. call uevent to shut-down */
if ((cur_temp >= data->ts.start_tripping) &&
(trend > 0) && !(check_handle & TRIPPING_FLAG)) {
notify_change_of_tmu_state(info);
pr_info("tripping: on waiting shutdown.\n");
check_handle |= TRIPPING_FLAG;
pr_debug("check_handle = %d\n", check_handle);
/* 2. change state: 2nd-throttling or warning */
} else if ((cur_temp <= data->ts.stop_2nd_throttle)
&& (trend < 0)) {
info->tmu_state = TMU_STATUS_WARNING;
pr_info("change state: trip->2nd throttle, "
"Check! occured only test mode.\n");
}
/* 3. chip protection: kernel panic as SW workaround */
if ((cur_temp >= data->ts.start_emergency) && (trend > 0)) {
panic("Emergency!!!! tripping is not treated!\n");
/* clear to prevent from interfupt by peindig bit */
__raw_writel(INTCLEARALL,
info->tmu_state + EXYNOS4_TMU_INTCLEAR);
enable_irq(info->irq);
mutex_unlock(&tmu_lock);
return;
}
break;
case TMU_STATUS_INIT:
/* sned tmu initial status to platform */
disable_irq(info->irq);
if (cur_temp >= data->ts.start_tripping)
info->tmu_state = TMU_STATUS_TRIPPED;
#if defined(CONFIG_TC_VOLTAGE)
else if (cur_temp >= data->ts.start_tc)
info->tmu_state = TMU_STATUS_TC;
#endif
else if (cur_temp >= data->ts.start_2nd_throttle)
info->tmu_state = TMU_STATUS_WARNING;
else if (cur_temp >= data->ts.start_1st_throttle)
info->tmu_state = TMU_STATUS_THROTTLED;
else if (cur_temp <= data->ts.stop_1st_throttle)
info->tmu_state = TMU_STATUS_NORMAL;
notify_change_of_tmu_state(info);
pr_info("%s: inform to init state to platform.\n", __func__);
break;
default:
pr_warn("Bug: checked tmu_state.\n");
if (cur_temp >= data->ts.start_tripping)
info->tmu_state = TMU_STATUS_TRIPPED;
else
info->tmu_state = TMU_STATUS_WARNING;
break;
} /* end */
/* memory throttling */
if (cur_temp >= data->ts.start_mem_throttle) {
if (!(auto_refresh_changed) && (trend > 0)) {
pr_info("set auto_refresh 1.95us\n");
set_refresh_rate(info->auto_refresh_tq0);
auto_refresh_changed = 1;
}
} else if (cur_temp <= (data->ts.stop_mem_throttle)) {
if ((auto_refresh_changed) && (trend < 0)) {
pr_info("set auto_refresh 3.9us\n");
set_refresh_rate(info->auto_refresh_normal);
auto_refresh_changed = 0;
}
}
info->last_temperature = cur_temp;
/* reschedule the next work */
queue_delayed_work_on(0, tmu_monitor_wq, &info->polling,
info->sampling_rate);
mutex_unlock(&tmu_lock);
return;
}