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/*
* Copyright (C) 2012-2017 ARM Limited or its affiliates.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "ssi_config.h"
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <crypto/ctr.h>
#include <linux/pm_runtime.h>
#include "ssi_driver.h"
#include "ssi_sram_mgr.h"
#include "ssi_pm_ext.h"
/*
This function should suspend the HW (if possiable), It should be implemented by
the driver user.
The reference code clears the internal SRAM to imitate lose of state.
*/
void ssi_pm_ext_hw_suspend(struct device *dev)
{
struct ssi_drvdata *drvdata =
(struct ssi_drvdata *)dev_get_drvdata(dev);
unsigned int val;
void __iomem *cc_base = drvdata->cc_base;
unsigned int sram_addr = 0;
CC_HAL_WRITE_REGISTER(CC_REG_OFFSET(HOST_RGF, SRAM_ADDR), sram_addr);
for (;sram_addr < SSI_CC_SRAM_SIZE ; sram_addr+=4) {
CC_HAL_WRITE_REGISTER(CC_REG_OFFSET(HOST_RGF, SRAM_DATA), 0x0);
do {
val = CC_HAL_READ_REGISTER(CC_REG_OFFSET(HOST_RGF, SRAM_DATA_READY));
} while (!(val &0x1));
}
}
/*
This function should resume the HW (if possiable).It should be implemented by
the driver user.
*/
void ssi_pm_ext_hw_resume(struct device *dev)
{
return;
}
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