xref: /openbmc/linux/include/linux/maple.h (revision b2441318)
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __LINUX_MAPLE_H
3 #define __LINUX_MAPLE_H
4 
5 #include <mach/maple.h>
6 
7 struct device;
8 extern struct bus_type maple_bus_type;
9 
10 /* Maple Bus command and response codes */
11 enum maple_code {
12 	MAPLE_RESPONSE_FILEERR =	-5,
13 	MAPLE_RESPONSE_AGAIN,	/* retransmit */
14 	MAPLE_RESPONSE_BADCMD,
15 	MAPLE_RESPONSE_BADFUNC,
16 	MAPLE_RESPONSE_NONE,	/* unit didn't respond*/
17 	MAPLE_COMMAND_DEVINFO =		1,
18 	MAPLE_COMMAND_ALLINFO,
19 	MAPLE_COMMAND_RESET,
20 	MAPLE_COMMAND_KILL,
21 	MAPLE_RESPONSE_DEVINFO,
22 	MAPLE_RESPONSE_ALLINFO,
23 	MAPLE_RESPONSE_OK,
24 	MAPLE_RESPONSE_DATATRF,
25 	MAPLE_COMMAND_GETCOND,
26 	MAPLE_COMMAND_GETMINFO,
27 	MAPLE_COMMAND_BREAD,
28 	MAPLE_COMMAND_BWRITE,
29 	MAPLE_COMMAND_BSYNC,
30 	MAPLE_COMMAND_SETCOND,
31 	MAPLE_COMMAND_MICCONTROL
32 };
33 
34 enum maple_file_errors {
35 	MAPLE_FILEERR_INVALID_PARTITION =	0x01000000,
36 	MAPLE_FILEERR_PHASE_ERROR =		0x02000000,
37 	MAPLE_FILEERR_INVALID_BLOCK =		0x04000000,
38 	MAPLE_FILEERR_WRITE_ERROR =		0x08000000,
39 	MAPLE_FILEERR_INVALID_WRITE_LENGTH =	0x10000000,
40 	MAPLE_FILEERR_BAD_CRC = 		0x20000000
41 };
42 
43 struct maple_buffer {
44 	char bufx[0x400];
45 	void *buf;
46 };
47 
48 struct mapleq {
49 	struct list_head list;
50 	struct maple_device *dev;
51 	struct maple_buffer *recvbuf;
52 	void *sendbuf, *recvbuf_p2;
53 	unsigned char length;
54 	enum maple_code command;
55 };
56 
57 struct maple_devinfo {
58 	unsigned long function;
59 	unsigned long function_data[3];
60 	unsigned char area_code;
61 	unsigned char connector_direction;
62 	char product_name[31];
63 	char product_licence[61];
64 	unsigned short standby_power;
65 	unsigned short max_power;
66 };
67 
68 struct maple_device {
69 	struct maple_driver *driver;
70 	struct mapleq *mq;
71 	void (*callback) (struct mapleq * mq);
72 	void (*fileerr_handler)(struct maple_device *mdev, void *recvbuf);
73 	int (*can_unload)(struct maple_device *mdev);
74 	unsigned long when, interval, function;
75 	struct maple_devinfo devinfo;
76 	unsigned char port, unit;
77 	char product_name[32];
78 	char product_licence[64];
79 	atomic_t busy;
80 	wait_queue_head_t maple_wait;
81 	struct device dev;
82 };
83 
84 struct maple_driver {
85 	unsigned long function;
86 	struct device_driver drv;
87 };
88 
89 void maple_getcond_callback(struct maple_device *dev,
90 			    void (*callback) (struct mapleq * mq),
91 			    unsigned long interval,
92 			    unsigned long function);
93 int maple_driver_register(struct maple_driver *);
94 void maple_driver_unregister(struct maple_driver *);
95 
96 int maple_add_packet(struct maple_device *mdev, u32 function,
97 	u32 command, u32 length, void *data);
98 void maple_clear_dev(struct maple_device *mdev);
99 
100 #define to_maple_dev(n) container_of(n, struct maple_device, dev)
101 #define to_maple_driver(n) container_of(n, struct maple_driver, drv)
102 
103 #define maple_get_drvdata(d)		dev_get_drvdata(&(d)->dev)
104 #define maple_set_drvdata(d,p)		dev_set_drvdata(&(d)->dev, (p))
105 
106 #endif				/* __LINUX_MAPLE_H */
107