msm: qca402: Initial implementation of qca402 driver

obj-$(CONFIG_MSMB_CAMERA) += camera_v2/

obj-y += broadcast/

obj-$(CONFIG_DVB_MPQ) += dvb/

obj-$(CONFIG_QCA402X) += qca402/

#

# Makefile for MSM HTC driver.

#

obj-y += msm_qca402.o

/* Copyright (c) 2018, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and

 * only 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.

 */

#ifndef _QCA402_H_

#define _QCA402_H_

#include <linux/types.h>

#include <linux/cdev.h>

#include <linux/mutex.h>

#include <linux/msm_ion.h>

#include "../drivers/net/wireless/qca402x/htca_mbox/htca.h"

/* current htca buffer limitation */

#define HTCA_MAX_BUFF_SIZE (2048)

enum lpchtca_packet_type {

	/* the below three types are for piece of data (i.e. frame) with

	 *  known size

	 */

	LPCHTCA_START_PACKET = 1,

	LPCHTCA_MID_PACKET,

	LPCHTCA_END_PACKET,

	/* For piece of data (i.e. frame) with known size that fits in one

	 *  packet

	 */

	LPCHTCA_FULL_PACKET,

	/* If data size is unknown/continuous - this case assumes no header or

	 * user space to take care of headers

	 */

	LPCHTCA_UNSPEC_PACKET,

};

/* Message Flags */

#define LPCHTCA_ASYNC_MESSAGE        (1 << 7)

/* this bit is added to one of the above to indicate the packet is last that

 * will be received for this stream

 */

#define LPCHTCA_END_TRANSMISSON      (1 << 6)

#define LPCHTCA_PACKET_MASK          ((1 << 6) - 1)

#define QCA402_MIN_NUM_WORKBUFS (4)

struct msm_qca402_file_data_t;

struct __packed msm_qca402_htca_header_t {

	__u8 channel_id;

	__u8 msg_flags;

	__u16 meta_size;

};

#define QCA_MSG_HEADER_SIZE (sizeof(struct msm_qca402_htca_header_t))

#define QCA_MSG_PAYLOAD_SIZE (HTCA_MAX_BUFF_SIZE - QCA_MSG_HEADER_SIZE -\

				HTCA_HEADER_LEN_MAX)

struct __packed msm_qca402_htca_message_t {

	__u8 htca_private[HTCA_HEADER_LEN_MAX];

	struct msm_qca402_htca_header_t header;

	__u8 payload[QCA_MSG_PAYLOAD_SIZE];

};

struct file_data_list_t {

	struct msm_qca402_file_data_t *file_data;

	struct list_head list;

};

struct msm_qca402_workbuff_list_t {

	struct msm_qca402_htca_message_t htca_msg;

	__u32 size;

	struct list_head list;

};

struct msm_qca402_buffer_list_t {

	struct msm_qca_message_type qca_msg;

	struct msm_qca402_workbuff_list_t *wbb;

	void *vaddr;

	struct ion_handle *ih;

	__u32 valid_size;

	struct list_head list;

};

struct msm_qca402_evt_list_t {

	__u8 channel_id;

	__u8 cmd;

	struct list_head list;

};

struct msm_qca402_channel_list_t {

	struct msm_qca402_buffer_list_t *current_entry;

	struct msm_qca402_workbuff_list_t *wbin;

	struct msm_qca402_workbuff_list_t *wbout;

	struct list_head enqueued_list;

	struct list_head ready_list;

	struct list_head dequeued_list;

	__u32 ref_cnt;

	__u8 channel_id;

	__u8 has_buff;

	struct list_head list;

};

struct msm_qca402_ready_list_t {

	struct msm_qca402_channel_list_t *ch_data;

	__u8 cmd;

	struct list_head list;

};

struct msm_qca402_dev_data_t {

	struct cdev cdev;

	struct device *dev;

	struct ion_client *ion_client;

	__u8 endPointId;

	void *htca_target;

	struct list_head file_list;

	struct list_head channel_list;

	struct mutex dev_mutex;

	struct list_head work_list;

	wait_queue_head_t in_queue;

	struct list_head in_list;

	wait_queue_head_t recv_queue;

	struct list_head recv_list;

	spinlock_t lock;

	__u8 dev_idx;

	__u8 sending;

	__u8 receiving;

};

struct msm_qca402_file_data_t {

	struct msm_qca402_dev_data_t *dev_data;

	wait_queue_head_t out_queue;

	struct mutex file_mutex;

	struct list_head evt_list;

	struct list_head ready_ch_list;

};

#endif /* _QCA402_H_ */