| // 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); |
| } |