diff options
Diffstat (limited to 'drivers/media/video/samsung/mali/common/mali_pmu.c')
| -rw-r--r-- | drivers/media/video/samsung/mali/common/mali_pmu.c | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/drivers/media/video/samsung/mali/common/mali_pmu.c b/drivers/media/video/samsung/mali/common/mali_pmu.c deleted file mode 100644 index 348b5dc..0000000 --- a/drivers/media/video/samsung/mali/common/mali_pmu.c +++ /dev/null @@ -1,199 +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_pmu.c - * Mali driver functions for Mali 400 PMU hardware - */ -#include "mali_hw_core.h" -#include "mali_pmu.h" -#include "mali_pp.h" -#include "mali_kernel_common.h" -#include "mali_osk.h" - -static u32 mali_pmu_detect_mask(u32 number_of_pp_cores, u32 number_of_l2_caches); - -/** @brief MALI inbuilt PMU hardware info and PMU hardware has knowledge of cores power mask - */ -struct mali_pmu_core -{ - struct mali_hw_core hw_core; - u32 mali_registered_cores_power_mask; -}; - -static struct mali_pmu_core *mali_global_pmu_core = NULL; - -/** @brief Register layout for hardware PMU - */ -typedef enum { - PMU_REG_ADDR_MGMT_POWER_UP = 0x00, /*< Power up register */ - PMU_REG_ADDR_MGMT_POWER_DOWN = 0x04, /*< Power down register */ - PMU_REG_ADDR_MGMT_STATUS = 0x08, /*< Core sleep status register */ - PMU_REG_ADDR_MGMT_INT_MASK = 0x0C, /*< Interrupt mask register */ - PMU_REGISTER_ADDRESS_SPACE_SIZE = 0x10, /*< Size of register space */ -} pmu_reg_addr_mgmt_addr; - -struct mali_pmu_core *mali_pmu_create(_mali_osk_resource_t *resource, u32 number_of_pp_cores, u32 number_of_l2_caches) -{ - struct mali_pmu_core* pmu; - - MALI_DEBUG_ASSERT(NULL == mali_global_pmu_core); - MALI_DEBUG_PRINT(2, ("Mali PMU: Creating Mali PMU core\n")); - - pmu = (struct mali_pmu_core *)_mali_osk_malloc(sizeof(struct mali_pmu_core)); - if (NULL != pmu) - { - pmu->mali_registered_cores_power_mask = mali_pmu_detect_mask(number_of_pp_cores, number_of_l2_caches); - if (_MALI_OSK_ERR_OK == mali_hw_core_create(&pmu->hw_core, resource, PMU_REGISTER_ADDRESS_SPACE_SIZE)) - { - if (_MALI_OSK_ERR_OK == mali_pmu_reset(pmu)) - { - mali_global_pmu_core = pmu; - return pmu; - } - mali_hw_core_delete(&pmu->hw_core); - } - _mali_osk_free(pmu); - } - - return NULL; -} - -void mali_pmu_delete(struct mali_pmu_core *pmu) -{ - MALI_DEBUG_ASSERT_POINTER(pmu); - - mali_hw_core_delete(&pmu->hw_core); - _mali_osk_free(pmu); - pmu = NULL; -} - -_mali_osk_errcode_t mali_pmu_reset(struct mali_pmu_core *pmu) -{ - /* Don't use interrupts - just poll status */ - mali_hw_core_register_write(&pmu->hw_core, PMU_REG_ADDR_MGMT_INT_MASK, 0); - return _MALI_OSK_ERR_OK; -} - -_mali_osk_errcode_t mali_pmu_powerdown_all(struct mali_pmu_core *pmu) -{ - u32 stat; - u32 timeout; - - MALI_DEBUG_ASSERT_POINTER(pmu); - MALI_DEBUG_ASSERT( pmu->mali_registered_cores_power_mask != 0 ); - MALI_DEBUG_PRINT( 4, ("Mali PMU: power down (0x%08X)\n", pmu->mali_registered_cores_power_mask) ); - - mali_hw_core_register_write(&pmu->hw_core, PMU_REG_ADDR_MGMT_POWER_DOWN, pmu->mali_registered_cores_power_mask); - - /* Wait for cores to be powered down (100 x 100us = 100ms) */ - timeout = 100; - do - { - /* Get status of sleeping cores */ - stat = mali_hw_core_register_read(&pmu->hw_core, PMU_REG_ADDR_MGMT_STATUS); - stat &= pmu->mali_registered_cores_power_mask; - if( stat == pmu->mali_registered_cores_power_mask ) break; /* All cores we wanted are now asleep */ - _mali_osk_time_ubusydelay(100); - timeout--; - } while( timeout > 0 ); - - if( timeout == 0 ) - { - return _MALI_OSK_ERR_TIMEOUT; - } - - return _MALI_OSK_ERR_OK; -} - -_mali_osk_errcode_t mali_pmu_powerup_all(struct mali_pmu_core *pmu) -{ - u32 stat; - u32 timeout; - - MALI_DEBUG_ASSERT_POINTER(pmu); - MALI_DEBUG_ASSERT( pmu->mali_registered_cores_power_mask != 0 ); /* Shouldn't be zero */ - MALI_DEBUG_PRINT( 4, ("Mali PMU: power up (0x%08X)\n", pmu->mali_registered_cores_power_mask) ); - - mali_hw_core_register_write(&pmu->hw_core, PMU_REG_ADDR_MGMT_POWER_UP, pmu->mali_registered_cores_power_mask); - - /* Wait for cores to be powered up (100 x 100us = 100ms) */ - timeout = 100; - do - { - /* Get status of sleeping cores */ - stat = mali_hw_core_register_read(&pmu->hw_core,PMU_REG_ADDR_MGMT_STATUS); - stat &= pmu->mali_registered_cores_power_mask; - if( stat == 0 ) break; /* All cores we wanted are now awake */ - _mali_osk_time_ubusydelay(100); - timeout--; - } while( timeout > 0 ); - - if( timeout == 0 ) - { - return _MALI_OSK_ERR_TIMEOUT; - } - - return _MALI_OSK_ERR_OK; -} - -struct mali_pmu_core *mali_pmu_get_global_pmu_core(void) -{ - return mali_global_pmu_core; -} - -static u32 mali_pmu_detect_mask(u32 number_of_pp_cores, u32 number_of_l2_caches) -{ - u32 mask = 0; - - if (number_of_l2_caches == 1) - { - /* Mali-300 or Mali-400 */ - u32 i; - - /* GP */ - mask = 0x01; - - /* L2 cache */ - mask |= 0x01<<1; - - /* Set bit for each PP core */ - for (i = 0; i < number_of_pp_cores; i++) - { - mask |= 0x01<<(i+2); - } - } - else if (number_of_l2_caches > 1) - { - /* Mali-450 */ - - /* GP (including its L2 cache) */ - mask = 0x01; - - /* There is always at least one PP (including its L2 cache) */ - mask |= 0x01<<1; - - /* Additional PP cores in same L2 cache */ - if (number_of_pp_cores >= 2) - { - mask |= 0x01<<2; - } - - /* Additional PP cores in a third L2 cache */ - if (number_of_pp_cores >= 5) - { - mask |= 0x01<<3; - } - } - - MALI_DEBUG_PRINT(4, ("Mali PMU: Power mask is 0x%08X (%u + %u)\n", mask, number_of_pp_cores, number_of_l2_caches)); - - return mask; -} |