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path: root/drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c
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Diffstat (limited to 'drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c')
-rw-r--r--drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c448
1 files changed, 0 insertions, 448 deletions
diff --git a/drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c b/drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c
deleted file mode 100644
index 4efa759..0000000
--- a/drivers/media/video/samsung/mali/platform/orion-m400/mali_platform_dvfs.c
+++ /dev/null
@@ -1,448 +0,0 @@
-/* * Copyright (C) 2010-2012 ARM Limited. All rights reserved. * * This program is free software and is provided to you under the terms of the GNU General Public License version 2
- * as published by the Free Software Foundation, and any use by you of this program is subject to the terms of such GNU licence.
- *
- * A copy of the licence is included with the program, and can also be obtained from Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
-
-/**
- * @file mali_platform_dvfs.c
- * Platform specific Mali driver dvfs functions
- */
-
-#include "mali_kernel_common.h"
-#include "mali_osk.h"
-#include "mali_platform.h"
-
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/regulator/consumer.h>
-#include <linux/regulator/driver.h>
-
-#include <asm/io.h>
-
-#ifdef CONFIG_CPU_FREQ
-#include <mach/asv.h>
-#include <mach/regs-pmu.h>
-#define EXYNOS4_ASV_ENABLED
-#endif
-
-#include "mali_device_pause_resume.h"
-#include <linux/workqueue.h>
-
-#define MALI_DVFS_WATING 10 // msec
-
-static int bMaliDvfsRun=0;
-
-#if MALI_GPU_BOTTOM_LOCK
-static _mali_osk_atomic_t bottomlock_status;
-#endif
-
-typedef struct mali_dvfs_tableTag{
- unsigned int clock;
- unsigned int freq;
- unsigned int vol;
-}mali_dvfs_table;
-
-typedef struct mali_dvfs_statusTag{
- unsigned int currentStep;
- mali_dvfs_table * pCurrentDvfs;
-
-}mali_dvfs_currentstatus;
-
-typedef struct mali_dvfs_thresholdTag{
- unsigned int downthreshold;
- unsigned int upthreshold;
-}mali_dvfs_threshold_table;
-
-typedef struct mali_dvfs_staycount{
- unsigned int staycount;
-}mali_dvfs_staycount_table;
-
-mali_dvfs_staycount_table mali_dvfs_staycount[MALI_DVFS_STEPS]={
- /*step 0*/{1},
- /*step 1*/{1},
- /*step 2*/{1} };
-
-/*dvfs threshold*/
-mali_dvfs_threshold_table mali_dvfs_threshold[MALI_DVFS_STEPS]={
- /*step 0*/{((int)((255*0)/100)) ,((int)((255*85)/100))},
- /*step 1*/{((int)((255*75)/100)) ,((int)((255*85)/100))},
- /*step 2*/{((int)((255*75)/100)) ,((int)((255*100)/100))} };
-
-/*dvfs status*/
-mali_dvfs_currentstatus maliDvfsStatus;
-int mali_dvfs_control=0;
-
-/*dvfs table*/
-mali_dvfs_table mali_dvfs[MALI_DVFS_STEPS]={
-#ifdef CONFIG_EXYNOS4210_1400MHZ_SUPPORT
- /*step 0*/{134 ,1000000 , 950000},
-#else
- /*step 0*/{100 ,1000000 , 950000},
-#endif
- /*step 1*/{160 ,1000000 , 950000},
- /*step 2*/{267 ,1000000 ,1000000} };
-
-#ifdef EXYNOS4_ASV_ENABLED
-
-#define ASV_8_LEVEL 8
-#define ASV_5_LEVEL 5
-
-static unsigned int asv_3d_volt_5_table[ASV_5_LEVEL][MALI_DVFS_STEPS] = {
- /* L3 (100/134MHz) L2(160MHz), L1(267MHz) */
- {1000000, 1000000, 1100000}, /* S */
- {1000000, 1000000, 1100000}, /* A */
- { 950000, 950000, 1000000}, /* B */
- { 950000, 950000, 1000000}, /* C */
- { 950000, 950000, 950000}, /* D */
-};
-
-static unsigned int asv_3d_volt_8_table[ASV_8_LEVEL][MALI_DVFS_STEPS] = {
- /* L3 (100/134MHz) L2(160MHz), L1(267MHz) */
- {1000000, 1000000, 1100000}, /* SS */
- {1000000, 1000000, 1100000}, /* A1 */
- {1000000, 1000000, 1100000}, /* A2 */
- { 950000, 950000, 1000000}, /* B1 */
- { 950000, 950000, 1000000}, /* B2 */
- { 950000, 950000, 1000000}, /* C1 */
- { 950000, 950000, 1000000}, /* C2 */
- { 950000, 950000, 950000}, /* D1 */
-};
-#endif
-
-static u32 mali_dvfs_utilization = 255;
-
-static void mali_dvfs_work_handler(struct work_struct *w);
-
-static struct workqueue_struct *mali_dvfs_wq = 0;
-extern mali_io_address clk_register_map;
-
-#if MALI_GPU_BOTTOM_LOCK
-extern _mali_osk_lock_t *mali_dvfs_lock;
-#endif
-
-static DECLARE_WORK(mali_dvfs_work, mali_dvfs_work_handler);
-
-static unsigned int get_mali_dvfs_status(void)
-{
- return maliDvfsStatus.currentStep;
-}
-
-#if MALI_GPU_BOTTOM_LOCK
-#if MALI_PMM_RUNTIME_JOB_CONTROL_ON
-int get_mali_dvfs_control_status(void)
-{
- return mali_dvfs_control;
-}
-
-mali_bool set_mali_dvfs_current_step(unsigned int step)
-{
- _mali_osk_lock_wait(mali_dvfs_lock, _MALI_OSK_LOCKMODE_RW);
- maliDvfsStatus.currentStep = step;
- _mali_osk_lock_signal(mali_dvfs_lock, _MALI_OSK_LOCKMODE_RW);
- return MALI_TRUE;
-}
-#endif
-#endif
-
-static mali_bool set_mali_dvfs_status(u32 step,mali_bool boostup)
-{
- u32 validatedStep=step;
-
-#ifdef CONFIG_REGULATOR
- if (mali_regulator_get_usecount()==0) {
- MALI_DEBUG_PRINT(1, ("regulator use_count is 0 \n"));
- return MALI_FALSE;
- }
-#endif
-
- if (boostup) {
-#ifdef CONFIG_REGULATOR
- /*change the voltage*/
- mali_regulator_set_voltage(mali_dvfs[step].vol, mali_dvfs[step].vol);
-#endif
- /*change the clock*/
- mali_clk_set_rate(mali_dvfs[step].clock, mali_dvfs[step].freq);
- } else {
- /*change the clock*/
- mali_clk_set_rate(mali_dvfs[step].clock, mali_dvfs[step].freq);
-#ifdef CONFIG_REGULATOR
- /*change the voltage*/
- mali_regulator_set_voltage(mali_dvfs[step].vol, mali_dvfs[step].vol);
-#endif
- }
-
- maliDvfsStatus.currentStep = validatedStep;
- /*for future use*/
- maliDvfsStatus.pCurrentDvfs = &mali_dvfs[validatedStep];
-
- return MALI_TRUE;
-}
-
-static void mali_platform_wating(u32 msec)
-{
- /*sample wating
- change this in the future with proper check routine.
- */
- unsigned int read_val;
- while(1) {
- read_val = _mali_osk_mem_ioread32(clk_register_map, 0x00);
- if ((read_val & 0x8000)==0x0000) break;
-
- _mali_osk_time_ubusydelay(100); // 1000 -> 100 : 20101218
- }
- /* _mali_osk_time_ubusydelay(msec*1000);*/
-}
-
-static mali_bool change_mali_dvfs_status(u32 step, mali_bool boostup )
-{
-
- MALI_DEBUG_PRINT(1, ("> change_mali_dvfs_status: %d, %d \n",step, boostup));
-
- if (!set_mali_dvfs_status(step, boostup)) {
- MALI_DEBUG_PRINT(1, ("error on set_mali_dvfs_status: %d, %d \n",step, boostup));
- return MALI_FALSE;
- }
-
- /*wait until clock and voltage is stablized*/
- mali_platform_wating(MALI_DVFS_WATING); /*msec*/
-
- return MALI_TRUE;
-}
-
-static unsigned int decideNextStatus(unsigned int utilization)
-{
- unsigned int level=0; // 0:stay, 1:up
-
- if (!mali_dvfs_control) {
-#if MALI_GPU_BOTTOM_LOCK
- if (_mali_osk_atomic_read(&bottomlock_status) > 0)
- level = 1; /* or bigger */
- else
-#endif
- switch(maliDvfsStatus.currentStep)
- {
- case 0:
- if( utilization > mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold)
- level=1;
- else
- level = maliDvfsStatus.currentStep;
- break;
- case 1:
- if( utilization > mali_dvfs_threshold[maliDvfsStatus.currentStep].upthreshold)
- level=2;
- else if( utilization <
- (mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold*mali_dvfs[maliDvfsStatus.currentStep-1].clock)/
- mali_dvfs[maliDvfsStatus.currentStep].clock)
- level=0;
- else
- level = maliDvfsStatus.currentStep;
- break;
- case 2:
- if( utilization <
- (mali_dvfs_threshold[maliDvfsStatus.currentStep].downthreshold*mali_dvfs[maliDvfsStatus.currentStep-1].clock)/
- mali_dvfs[maliDvfsStatus.currentStep].clock)
- level=1;
- else
- level = maliDvfsStatus.currentStep;
- break;
- }
- }
- else
- {
- if((mali_dvfs_control == 1)||(( mali_dvfs_control > 3) && (mali_dvfs_control < mali_dvfs[0].clock+1)))
- {
- level=0;
- }
- else if((mali_dvfs_control == 2)||(( mali_dvfs_control > mali_dvfs[0].clock) && (mali_dvfs_control < mali_dvfs[1].clock+1)))
- {
- level=1;
- }
- else
- {
- level=2;
- }
- }
-
- return level;
-}
-
-#ifdef EXYNOS4_ASV_ENABLED
-static mali_bool mali_dvfs_table_update(void)
-{
- unsigned int exynos_result_of_asv_group;
- unsigned int target_asv;
- unsigned int i;
- exynos_result_of_asv_group = exynos_result_of_asv & 0xf;
- target_asv = exynos_result_of_asv >> 28;
- MALI_PRINT(("exynos_result_of_asv_group = 0x%x, target_asv = 0x%x\n", exynos_result_of_asv_group, target_asv));
-
- if (target_asv == 0x8) { //SUPPORT_1400MHZ
- for (i = 0; i < MALI_DVFS_STEPS; i++) {
- mali_dvfs[i].vol = asv_3d_volt_5_table[exynos_result_of_asv_group][i];
- MALI_PRINT(("mali_dvfs[%d].vol = %d\n", i, mali_dvfs[i].vol));
- }
- } else if (target_asv == 0x4){ //SUPPORT_1200MHZ
- for (i = 0; i < MALI_DVFS_STEPS; i++) {
- mali_dvfs[i].vol = asv_3d_volt_8_table[exynos_result_of_asv_group][i];
- MALI_PRINT(("mali_dvfs[%d].vol = %d\n", i, mali_dvfs[i].vol));
- }
- }
-
- return MALI_TRUE;
-
-}
-#endif
-
-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 = 0; // 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 && 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;
-}
-
-
-
-int mali_dvfs_is_running(void)
-{
- return bMaliDvfsRun;
-}
-
-
-
-void mali_dvfs_late_resume(void)
-{
- // set the init clock as low when resume
- set_mali_dvfs_status(0,0);
-}
-
-
-static void mali_dvfs_work_handler(struct work_struct *w)
-{
- bMaliDvfsRun=1;
-
- MALI_DEBUG_PRINT(3, ("=== mali_dvfs_work_handler\n"));
-
- if (!mali_dvfs_status(mali_dvfs_utilization))
- MALI_DEBUG_PRINT(1,( "error on mali dvfs status in mali_dvfs_work_handler"));
-
- bMaliDvfsRun=0;
-}
-
-
-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");
-
-#if MALI_GPU_BOTTOM_LOCK
- _mali_osk_atomic_init(&bottomlock_status, 0);
-#endif
-
- /*add a error handling here*/
- maliDvfsStatus.currentStep = step;
-
- return MALI_TRUE;
-}
-
-void deinit_mali_dvfs_status(void)
-{
-#if MALI_GPU_BOTTOM_LOCK
- _mali_osk_atomic_term(&bottomlock_status);
-#endif
-
- if (mali_dvfs_wq)
- destroy_workqueue(mali_dvfs_wq);
- mali_dvfs_wq = NULL;
-}
-
-mali_bool mali_dvfs_handler(u32 utilization)
-{
- mali_dvfs_utilization = utilization;
- queue_work_on(0, mali_dvfs_wq,&mali_dvfs_work);
-
- /*add error handle here*/
- return MALI_TRUE;
-}
-
-void mali_default_step_set(int step, mali_bool boostup)
-{
- mali_clk_set_rate(mali_dvfs[step].clock, mali_dvfs[step].freq);
-
- if (maliDvfsStatus.currentStep == 1)
- set_mali_dvfs_status(step, boostup);
-}
-
-#if MALI_GPU_BOTTOM_LOCK
-int mali_dvfs_bottom_lock_push(void)
-{
- int prev_status = _mali_osk_atomic_read(&bottomlock_status);
-
- if (prev_status < 0) {
- MALI_PRINT(("gpu bottom lock status is not valid for push"));
- return -1;
- }
-
- if (prev_status == 0) {
- mali_regulator_set_voltage(mali_dvfs[1].vol, mali_dvfs[1].vol);
- mali_clk_set_rate(mali_dvfs[1].clock, mali_dvfs[1].freq);
- set_mali_dvfs_current_step(1);
- }
-
- return _mali_osk_atomic_inc_return(&bottomlock_status);
-}
-
-int mali_dvfs_bottom_lock_pop(void)
-{
- if (_mali_osk_atomic_read(&bottomlock_status) <= 0) {
- MALI_PRINT(("gpu bottom lock status is not valid for pop"));
- return -1;
- }
-
- return _mali_osk_atomic_dec_return(&bottomlock_status);
-}
-#endif
generated by cgit v1.1 at 2024-04-28 22:44:55 +0000