static mali_bool mali_dvfs_status(u32 utilization)
{
unsigned int nextStatus = 0;
unsigned int curStatus = 0;
static unsigned int tmpStatus;
mali_bool boostup = MALI_FALSE;
static int stay_count = 5;
#ifdef EXYNOS4_ASV_ENABLED
static mali_bool asv_applied = MALI_FALSE;
#endif
MALI_DEBUG_PRINT(1, ("> mali_dvfs_status: %d \n",utilization));
#ifdef EXYNOS4_ASV_ENABLED
if (asv_applied == MALI_FALSE) {
mali_dvfs_table_update();
change_mali_dvfs_status(1, 0);
asv_applied = MALI_TRUE;
return MALI_TRUE;
}
#endif
/*decide next step*/
curStatus = get_mali_dvfs_status();
nextStatus = decideNextStatus(utilization);
MALI_DEBUG_PRINT(1, ("= curStatus %d, nextStatus %d, maliDvfsStatus.currentStep %d \n", curStatus, nextStatus, maliDvfsStatus.currentStep));
if (curStatus < nextStatus) {
/* Case 1: clock up directly */
boostup = 1;
if (!change_mali_dvfs_status(nextStatus, boostup))
return MALI_FALSE;
stay_count = mali_dvfs_staycount[maliDvfsStatus.currentStep].staycount;
} else if (curStatus > nextStatus) {
if (stay_count == 0) {
/* Case 2: clock down */
boostup = 0;
nextStatus = tmpStatus;
if (!change_mali_dvfs_status(nextStatus, boostup))
return MALI_FALSE;
stay_count = mali_dvfs_staycount[maliDvfsStatus.currentStep].staycount;
} else {
/* Case 3: clock down, wait until staycount is 0 */
tmpStatus = nextStatus;
stay_count--;
}
} else {
/* Case 4: clock same - reset staycount */
stay_count = mali_dvfs_staycount[maliDvfsStatus.currentStep].staycount;
}
return MALI_TRUE;
}
static mali_bool mali_dvfs_status(u32 utilization)
{
unsigned int nextStatus = 0;
unsigned int curStatus = 0;
mali_bool boostup = MALI_FALSE;
#ifdef EXYNOS4_ASV_ENABLED
static mali_bool asv_applied = MALI_FALSE;
#endif
static int stay_count = 5; // to prevent frequent switch
MALI_DEBUG_PRINT(1, ("> mali_dvfs_status: %d \n",utilization));
#ifdef EXYNOS4_ASV_ENABLED
if (asv_applied == MALI_FALSE) {
mali_dvfs_table_update();
change_mali_dvfs_status(0,0);
asv_applied = MALI_TRUE;
return MALI_TRUE;
}
#endif
/*decide next step*/
curStatus = get_mali_dvfs_status();
nextStatus = decideNextStatus(utilization);
MALI_DEBUG_PRINT(1, ("= curStatus %d, nextStatus %d, maliDvfsStatus.currentStep %d \n", curStatus, nextStatus, maliDvfsStatus.currentStep));
/*if next status is same with current status, don't change anything*/
if(curStatus != nextStatus) {
/*check if boost up or not*/
if(maliDvfsStatus.currentStep < nextStatus) {
boostup = 1;
stay_count = 5;
}
else if (maliDvfsStatus.currentStep > nextStatus){
stay_count--;
}
if( boostup == 1 || stay_count <= 0){
/*change mali dvfs status*/
if (!change_mali_dvfs_status(nextStatus,boostup)) {
MALI_DEBUG_PRINT(1, ("error on change_mali_dvfs_status \n"));
return MALI_FALSE;
}
boostup = 0;
stay_count = 5;
}
}
else
stay_count = 5;
return MALI_TRUE;
}
mali_bool init_mali_dvfs_status(int step)
{
/*default status
add here with the right function to get initilization value.
*/
if (!mali_dvfs_wq)
mali_dvfs_wq = create_singlethread_workqueue("mali_dvfs");
_mali_osk_atomic_init(&bottomlock_status, 0);
mali_dvfs_table_update();
/*add a error handling here*/
set_mali_dvfs_current_step(step);
return MALI_TRUE;
}
static mali_bool mali_dvfs_status(u32 utilization)
{
unsigned int nextStatus = 0;
unsigned int curStatus = 0;
mali_bool boostup = MALI_FALSE;
static int stay_count = 0;
#ifdef EXYNOS4_ASV_ENABLED
static mali_bool asv_applied = MALI_FALSE;
#endif
MALI_DEBUG_PRINT(1, ("> mali_dvfs_status: %d \n",utilization));
#ifdef EXYNOS4_ASV_ENABLED
if (asv_applied == MALI_FALSE) {
mali_dvfs_table_update();
change_mali_dvfs_status(1, 0);
asv_applied = MALI_TRUE;
return MALI_TRUE;
}
#endif
/*decide next step*/
curStatus = get_mali_dvfs_status();
nextStatus = decideNextStatus(utilization);
MALI_DEBUG_PRINT(1, ("= curStatus %d, nextStatus %d, maliDvfsStatus.currentStep %d \n", curStatus, nextStatus, maliDvfsStatus.currentStep));
/*if next status is same with current status, don't change anything*/
if ((curStatus != nextStatus && stay_count == 0)) {
/*check if boost up or not*/
if (nextStatus > maliDvfsStatus.currentStep) boostup = 1;
/*change mali dvfs status*/
if (!change_mali_dvfs_status(nextStatus,boostup)) {
MALI_DEBUG_PRINT(1, ("error on change_mali_dvfs_status \n"));
return MALI_FALSE;
}
stay_count = mali_dvfs_staycount[maliDvfsStatus.currentStep].staycount;
} else {
if (stay_count > 0)
stay_count--;
}
return MALI_TRUE;
}
static unsigned int decideNextStatus(unsigned int utilization)
{
static unsigned int level = 0; // 0:stay, 1:up
static int mali_dvfs_clk = 0;
if (mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold
<= mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold) {
MALI_PRINT(("upthreadshold is smaller than downthreshold: %d < %d\n",
mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold,
mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold));
return level;
}
if (!mali_dvfs_control && level == maliDvfsStatus.currentStep) {
if (utilization > (int)(255 * mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold / 100) &&
level < MALI_DVFS_STEPS - 1) {
level++;
}
if (utilization < (int)(255 * mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold / 100) &&
level > 0) {
level--;
}
} else if (mali_dvfs_control == 999) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[i].clock;
}
#ifdef EXYNOS4_ASV_ENABLED
mali_dvfs_table_update();
#endif
i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
mali_dvfs[i].clock = step[i].clk;
}
mali_dvfs_control = 0;
level = 0;
step0_clk = step[0].clk;
change_dvfs_tableset(step0_clk, 0);
#if (MALI_DVFS_STEPS > 1)
step1_clk = step[1].clk;
change_dvfs_tableset(step1_clk, 1);
#if (MALI_DVFS_STEPS > 2)
step2_clk = step[2].clk;
change_dvfs_tableset(step2_clk, 2);
#if (MALI_DVFS_STEPS > 3)
step3_clk = step[3].clk;
change_dvfs_tableset(step3_clk, 3);
#endif
#endif
#endif
} else if (mali_dvfs_control != mali_dvfs_clk && mali_dvfs_control != 999) {
if (mali_dvfs_control < mali_dvfs_all[1].clock && mali_dvfs_control > 0) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[0].clock;
}
} else if (mali_dvfs_control < mali_dvfs_all[2].clock && mali_dvfs_control >= mali_dvfs_all[1].clock) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[1].clock;
}
} else if (mali_dvfs_control < mali_dvfs_all[3].clock && mali_dvfs_control >= mali_dvfs_all[2].clock) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[2].clock;
}
} else {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[3].clock;
}
}
step0_clk = step[0].clk;
change_dvfs_tableset(step0_clk, 0);
#if (MALI_DVFS_STEPS > 1)
step1_clk = step[1].clk;
change_dvfs_tableset(step1_clk, 1);
#if (MALI_DVFS_STEPS > 2)
step2_clk = step[2].clk;
change_dvfs_tableset(step2_clk, 2);
#if (MALI_DVFS_STEPS > 3)
step3_clk = step[3].clk;
change_dvfs_tableset(step3_clk, 3);
#endif
#endif
#endif
level = maliDvfsStatus.currentStep;
}
mali_dvfs_clk = mali_dvfs_control;
return level;
}
static unsigned int decideNextStatus(unsigned int utilization)
{
static unsigned int level = 0; // 0:stay, 1:up
static int mali_dvfs_clk = 0;
int i = 0;
if (mali_runtime_resumed >= 0) {
//level = mali_runtime_resumed;
mali_runtime_resumed = -1;
return level;
}
if (mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold
<= mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold) {
MALI_PRINT(("upthreadshold is smaller than downthreshold: %d < %d\n",
mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold,
mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold));
return level;
}
if (!mali_dvfs_control && level == maliDvfsStatus.currentStep) {
if (utilization > (int)(255 * mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold / 100) &&
level < MALI_DVFS_STEPS - 1) {
level++;
if ((samsung_rev() < EXYNOS4412_REV_2_0) && (maliDvfsStatus.currentStep == 3)) {
level=get_mali_dvfs_status();
}
}
if (utilization < (int)(255 * mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold / 100) &&
level > 0) {
level--;
}
} else if (mali_dvfs_control == 999) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[i].clock;
}
#ifdef EXYNOS4_ASV_ENABLED
mali_dvfs_table_update();
#endif
i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
mali_dvfs[i].clock = step[i].clk;
}
mali_dvfs_control = 0;
level = 0;
step0_clk = step[0].clk;
change_dvfs_tableset(step0_clk, 0);
#if (MALI_DVFS_STEPS > 1)
step1_clk = step[1].clk;
change_dvfs_tableset(step1_clk, 1);
#if (MALI_DVFS_STEPS > 2)
step2_clk = step[2].clk;
change_dvfs_tableset(step2_clk, 2);
#if (MALI_DVFS_STEPS > 3)
step3_clk = step[3].clk;
change_dvfs_tableset(step3_clk, 3);
#if (MALI_DVFS_STEPS > 4)
step3_clk = step[4].clk;
change_dvfs_tableset(step4_clk, 4);
#endif
#endif
#endif
#endif
} else if (mali_dvfs_control != mali_dvfs_clk && mali_dvfs_control != 999) {
if (mali_dvfs_control < mali_dvfs_all[1].clock && mali_dvfs_control > 0) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[0].clock;
}
maliDvfsStatus.currentStep = 0;
} else if (mali_dvfs_control < mali_dvfs_all[2].clock && mali_dvfs_control >= mali_dvfs_all[1].clock) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[1].clock;
}
maliDvfsStatus.currentStep = 1;
} else if (mali_dvfs_control < mali_dvfs_all[3].clock && mali_dvfs_control >= mali_dvfs_all[2].clock) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[2].clock;
}
maliDvfsStatus.currentStep = 2;
} else if (mali_dvfs_control < mali_dvfs_all[4].clock && mali_dvfs_control >= mali_dvfs_all[3].clock) {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[3].clock;
}
maliDvfsStatus.currentStep = 3;
} else {
int i = 0;
for (i = 0; i < MALI_DVFS_STEPS; i++) {
step[i].clk = mali_dvfs_all[4].clock;
}
maliDvfsStatus.currentStep = 4;
}
step0_clk = step[0].clk;
change_dvfs_tableset(step0_clk, 0);
#if (MALI_DVFS_STEPS > 1)
step1_clk = step[1].clk;
change_dvfs_tableset(step1_clk, 1);
#if (MALI_DVFS_STEPS > 2)
step2_clk = step[2].clk;
change_dvfs_tableset(step2_clk, 2);
#if (MALI_DVFS_STEPS > 3)
step3_clk = step[3].clk;
change_dvfs_tableset(step3_clk, 3);
#if (MALI_DVFS_STEPS > 4)
step3_clk = step[4].clk;
change_dvfs_tableset(step4_clk, 4);
#endif
#endif
#endif
#endif
level = maliDvfsStatus.currentStep;
}
mali_dvfs_clk = mali_dvfs_control;
if (_mali_osk_atomic_read(&bottomlock_status) > 0) {
if (level < bottom_lock_step)
level = bottom_lock_step;
}
return level;
}
