// SPDX-License-Identifier: GPL-2.0
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/*
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* Support for Intel Camera Imaging ISP subsystem.
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* Copyright (c) 2015, Intel Corporation.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*/
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#include "platform_support.h"
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#include "sh_css_hrt.h"
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#include "ia_css_debug.h"
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#include "device_access.h"
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#define __INLINE_EVENT__
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#include "event_fifo.h"
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#define __INLINE_SP__
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#include "sp.h"
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#define __INLINE_ISP__
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#include "isp.h"
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#define __INLINE_IRQ__
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#include "irq.h"
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#define __INLINE_FIFO_MONITOR__
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#include "fifo_monitor.h"
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/* System independent */
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#include "sh_css_internal.h"
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bool sh_css_hrt_system_is_idle(void)
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{
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bool not_idle = false, idle;
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fifo_channel_t ch;
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idle = sp_ctrl_getbit(SP0_ID, SP_SC_REG, SP_IDLE_BIT);
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not_idle |= !idle;
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if (!idle)
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IA_CSS_WARNING("SP not idle");
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idle = isp_ctrl_getbit(ISP0_ID, ISP_SC_REG, ISP_IDLE_BIT);
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not_idle |= !idle;
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if (!idle)
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IA_CSS_WARNING("ISP not idle");
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for (ch = 0; ch < N_FIFO_CHANNEL; ch++) {
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fifo_channel_state_t state;
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fifo_channel_get_state(FIFO_MONITOR0_ID, ch, &state);
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if (state.fifo_valid) {
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IA_CSS_WARNING("FIFO channel %d is not empty", ch);
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not_idle = true;
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}
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}
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return !not_idle;
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}
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int sh_css_hrt_sp_wait(void)
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{
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irq_sw_channel_id_t irq_id = IRQ_SW_CHANNEL0_ID;
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/*
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* Wait till SP is idle or till there is a SW2 interrupt
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* The SW2 interrupt will be used when frameloop runs on SP
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* and signals an event with similar meaning as SP idle
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* (e.g. frame_done)
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*/
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while (!sp_ctrl_getbit(SP0_ID, SP_SC_REG, SP_IDLE_BIT) &&
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((irq_reg_load(IRQ0_ID,
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_HRT_IRQ_CONTROLLER_STATUS_REG_IDX) &
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(1U << (irq_id + IRQ_SW_CHANNEL_OFFSET))) == 0)) {
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udelay(1);
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}
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return 0;
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}
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