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// SPDX-License-Identifier: GPL-2.0
/*
* Support for Intel Camera Imaging ISP subsystem.
* Copyright (c) 2010-2015, Intel Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope 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.
*/
#include <linux/delay.h>
#include <system_global.h>
#include "isp.h"
#ifndef __INLINE_ISP__
#include "isp_private.h"
#endif /* __INLINE_ISP__ */
#include "assert_support.h"
void cnd_isp_irq_enable(
const isp_ID_t ID,
const bool cnd)
{
if (cnd) {
isp_ctrl_setbit(ID, ISP_IRQ_READY_REG, ISP_IRQ_READY_BIT);
/* Enabling the IRQ immediately triggers an interrupt, clear it */
isp_ctrl_setbit(ID, ISP_IRQ_CLEAR_REG, ISP_IRQ_CLEAR_BIT);
} else {
isp_ctrl_clearbit(ID, ISP_IRQ_READY_REG,
ISP_IRQ_READY_BIT);
}
return;
}
/* ISP functions to control the ISP state from the host, even in crun. */
/* Inspect readiness of an ISP indexed by ID */
unsigned int isp_is_ready(isp_ID_t ID)
{
assert(ID < N_ISP_ID);
return isp_ctrl_getbit(ID, ISP_SC_REG, ISP_IDLE_BIT);
}
/* Inspect sleeping of an ISP indexed by ID */
unsigned int isp_is_sleeping(isp_ID_t ID)
{
assert(ID < N_ISP_ID);
return isp_ctrl_getbit(ID, ISP_SC_REG, ISP_SLEEPING_BIT);
}
/* To be called by the host immediately before starting ISP ID. */
void isp_start(isp_ID_t ID)
{
assert(ID < N_ISP_ID);
}
/* Wake up ISP ID. */
void isp_wake(isp_ID_t ID)
{
assert(ID < N_ISP_ID);
isp_ctrl_setbit(ID, ISP_SC_REG, ISP_START_BIT);
udelay(1);
}
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