/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2023, Intel Corporation. * Intel Visual Sensing Controller Transport Layer Linux driver */ #ifndef _VSC_TP_H_ #define _VSC_TP_H_ #include <linux/types.h> #define VSC_TP_CMD_WRITE 0x01 #define VSC_TP_CMD_READ 0x02 #define VSC_TP_CMD_ACK 0x10 #define VSC_TP_CMD_NACK 0x11 #define VSC_TP_CMD_BUSY 0x12 struct vsc_tp; /** * typedef vsc_event_cb_t - event callback function signature * @context: the execution context of who registered this callback * * The callback function is called in interrupt context and the data * payload is only valid during the call. If the user needs access * the data payload later, it must copy the payload. */ typedef void (*vsc_tp_event_cb_t)(void *context); int vsc_tp_rom_xfer(struct vsc_tp *tp, const void *obuf, void *ibuf, size_t len); int vsc_tp_xfer(struct vsc_tp *tp, u8 cmd, const void *obuf, size_t olen, void *ibuf, size_t ilen); int vsc_tp_register_event_cb(struct vsc_tp *tp, vsc_tp_event_cb_t event_cb, void *context); int vsc_tp_request_irq(struct vsc_tp *tp); void vsc_tp_free_irq(struct vsc_tp *tp); void vsc_tp_intr_enable(struct vsc_tp *tp); void vsc_tp_intr_disable(struct vsc_tp *tp); void vsc_tp_intr_synchronize(struct vsc_tp *tp); void vsc_tp_reset(struct vsc_tp *tp); bool vsc_tp_need_read(struct vsc_tp *tp); int vsc_tp_init(struct vsc_tp *tp, struct device *dev); #endif