1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/* drivers/media/platform/s5p-cec/s5p_cec.h
3 *
4 * Samsung S5P HDMI CEC driver
5 *
6 * Copyright (c) 2014 Samsung Electronics Co., Ltd.
7 */
8
9#ifndef _S5P_CEC_H_
10#define _S5P_CEC_H_ __FILE__
11
12#include <linux/clk.h>
13#include <linux/interrupt.h>
14#include <linux/kernel.h>
15#include <linux/mfd/syscon.h>
16#include <linux/module.h>
17#include <linux/of.h>
18#include <linux/platform_device.h>
19#include <linux/pm_runtime.h>
20#include <linux/timer.h>
21#include <linux/workqueue.h>
22#include <media/cec.h>
23
24#include "exynos_hdmi_cec.h"
25#include "regs-cec.h"
26#include "s5p_cec.h"
27
28#define CEC_NAME	"s5p-cec"
29
30#define CEC_STATUS_TX_RUNNING		(1 << 0)
31#define CEC_STATUS_TX_TRANSFERRING	(1 << 1)
32#define CEC_STATUS_TX_DONE		(1 << 2)
33#define CEC_STATUS_TX_ERROR		(1 << 3)
34#define CEC_STATUS_TX_NACK		(1 << 4)
35#define CEC_STATUS_TX_BYTES		(0xFF << 8)
36#define CEC_STATUS_RX_RUNNING		(1 << 16)
37#define CEC_STATUS_RX_RECEIVING		(1 << 17)
38#define CEC_STATUS_RX_DONE		(1 << 18)
39#define CEC_STATUS_RX_ERROR		(1 << 19)
40#define CEC_STATUS_RX_BCAST		(1 << 20)
41#define CEC_STATUS_RX_BYTES		(0xFF << 24)
42
43#define CEC_WORKER_TX_DONE		(1 << 0)
44#define CEC_WORKER_RX_MSG		(1 << 1)
45
46/* CEC Rx buffer size */
47#define CEC_RX_BUFF_SIZE		16
48/* CEC Tx buffer size */
49#define CEC_TX_BUFF_SIZE		16
50
51enum cec_state {
52	STATE_IDLE,
53	STATE_BUSY,
54	STATE_DONE,
55	STATE_NACK,
56	STATE_ERROR
57};
58
59struct cec_notifier;
60
61struct s5p_cec_dev {
62	struct cec_adapter	*adap;
63	struct clk		*clk;
64	struct device		*dev;
65	struct mutex		lock;
66	struct regmap           *pmu;
67	struct cec_notifier	*notifier;
68	int			irq;
69	void __iomem		*reg;
70
71	enum cec_state		rx;
72	enum cec_state		tx;
73	struct cec_msg		msg;
74};
75
76#endif /* _S5P_CEC_H_ */
77