drv_gfx_l1sm_ctrl.c
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/*****************************************************************************
* Copyright Statement:
* --------------------
* This software is protected by Copyright and the information contained
* herein is confidential. The software may not be copied and the information
* contained herein may not be used or disclosed except with the written
* permission of MediaTek Inc. (C) 2007
*
* BY OPENING THIS FILE, BUYER HEREBY UNEQUIVOCALLY ACKNOWLEDGES AND AGREES
* THAT THE SOFTWARE/FIRMWARE AND ITS DOCUMENTATIONS ("MEDIATEK SOFTWARE")
* RECEIVED FROM MEDIATEK AND/OR ITS REPRESENTATIVES ARE PROVIDED TO BUYER ON
* AN "AS-IS" BASIS ONLY. MEDIATEK EXPRESSLY DISCLAIMS ANY AND ALL WARRANTIES,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT.
* NEITHER DOES MEDIATEK PROVIDE ANY WARRANTY WHATSOEVER WITH RESPECT TO THE
* SOFTWARE OF ANY THIRD PARTY WHICH MAY BE USED BY, INCORPORATED IN, OR
* SUPPLIED WITH THE MEDIATEK SOFTWARE, AND BUYER AGREES TO LOOK ONLY TO SUCH
* THIRD PARTY FOR ANY WARRANTY CLAIM RELATING THERETO. MEDIATEK SHALL ALSO
* NOT BE RESPONSIBLE FOR ANY MEDIATEK SOFTWARE RELEASES MADE TO BUYER'S
* SPECIFICATION OR TO CONFORM TO A PARTICULAR STANDARD OR OPEN FORUM.
*
* BUYER'S SOLE AND EXCLUSIVE REMEDY AND MEDIATEK'S ENTIRE AND CUMULATIVE
* LIABILITY WITH RESPECT TO THE MEDIATEK SOFTWARE RELEASED HEREUNDER WILL BE,
* AT MEDIATEK'S OPTION, TO REVISE OR REPLACE THE MEDIATEK SOFTWARE AT ISSUE,
* OR REFUND ANY SOFTWARE LICENSE FEES OR SERVICE CHARGE PAID BY BUYER TO
* MEDIATEK FOR SUCH MEDIATEK SOFTWARE AT ISSUE.
*
* THE TRANSACTION CONTEMPLATED HEREUNDER SHALL BE CONSTRUED IN ACCORDANCE
* WITH THE LAWS OF THE STATE OF CALIFORNIA, USA, EXCLUDING ITS CONFLICT OF
* LAWS PRINCIPLES. ANY DISPUTES, CONTROVERSIES OR CLAIMS ARISING THEREOF AND
* RELATED THERETO SHALL BE SETTLED BY ARBITRATION IN SAN FRANCISCO, CA, UNDER
* THE RULES OF THE INTERNATIONAL CHAMBER OF COMMERCE (ICC).
*
*****************************************************************************/
/*****************************************************************************
*
* Filename:
* ---------
* drv_gfx_l1sm_ctrl.c
*
* Project:
* --------
* Maui
*
* Description:
* ------------
* drv_gfx_l1sm_ctrl.c provides the capability of L1SM handle sharing for drv_graphics HW modules.
*
* Author:
* -------
* -------
*
*============================================================================
* HISTORY
* Below this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*------------------------------------------------------------------------------
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*------------------------------------------------------------------------------
* Upper this line, this part is controlled by PVCS VM. DO NOT MODIFY!!
*============================================================================
****************************************************************************/
#include "drv_gfx_l1sm_ctrl.h"
#include "kal_general_types.h"
#include "kal_public_defs.h"
#include "kal_public_api.h"
#if defined(__MTK_TARGET__)
#include "intrctrl.h"
extern kal_uint8 L1SM_GetHandle(void);
extern void L1SM_SleepEnable(kal_uint8 handle);
extern void L1SM_SleepDisable(kal_uint8 handle);
#else
#define L1SM_SleepDisable() (0xAA)
#define L1SM_SleepEnable(HANDLE) do {} while (0)
#define L1SM_SleepDisable(HANDLE) do {} while (0)
#endif
static kal_uint32 _drv_gfx_l1sm_handle = SM_CTRL_NULL_HANDLE;
static kal_uint32 _drv_gfx_l1sm_user_state = 0;
kal_int32 drv_gfx_l1sm_sleep_block(DRV_GFX_L1SM_USER_ENUM user)
{
kal_uint32 savedMask;
ASSERT(DRV_GFX_L1SM_USER_NULL != user);
ASSERT(DRV_GFX_L1SM_USER_LAST_ONE <= SM_CTRL_MAX_ENTRY_COUNT);
if (SM_CTRL_NULL_HANDLE == _drv_gfx_l1sm_handle)
{
_drv_gfx_l1sm_handle = L1SM_GetHandle();
}
if (0 == _drv_gfx_l1sm_user_state)
{
/// Disable the L1 SM now since the _drv_gfx_l1sm_user_state is going to be set.
L1SM_SleepDisable(_drv_gfx_l1sm_handle);
}
savedMask = SaveAndSetIRQMask();
_drv_gfx_l1sm_user_state |= (1 << user);
RestoreIRQMask(savedMask);
return 1;
}
kal_int32 drv_gfx_l1sm_sleep_unblock(DRV_GFX_L1SM_USER_ENUM user)
{
kal_uint32 savedMask;
ASSERT(DRV_GFX_L1SM_USER_NULL != user);
ASSERT(DRV_GFX_L1SM_USER_LAST_ONE <= SM_CTRL_MAX_ENTRY_COUNT);
ASSERT(SM_CTRL_NULL_HANDLE != _drv_gfx_l1sm_handle);
savedMask = SaveAndSetIRQMask();
_drv_gfx_l1sm_user_state &= ~(1 << user);
RestoreIRQMask(savedMask);
if (0 == _drv_gfx_l1sm_user_state)
{
L1SM_SleepEnable(_drv_gfx_l1sm_handle);
}
return 1;
}