1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_OLPC_EC_H
3#define _LINUX_OLPC_EC_H
4
5#include <linux/bits.h>
6
7/* XO-1 EC commands */
8#define EC_FIRMWARE_REV 0x08
9#define EC_WRITE_SCI_MASK 0x1b
10#define EC_WAKE_UP_WLAN 0x24
11#define EC_WLAN_LEAVE_RESET 0x25
12#define EC_DCON_POWER_MODE 0x26
13#define EC_READ_EB_MODE 0x2a
14#define EC_SET_SCI_INHIBIT 0x32
15#define EC_SET_SCI_INHIBIT_RELEASE 0x34
16#define EC_WLAN_ENTER_RESET 0x35
17#define EC_WRITE_EXT_SCI_MASK 0x38
18#define EC_SCI_QUERY 0x84
19#define EC_EXT_SCI_QUERY 0x85
20
21/* SCI source values */
22#define EC_SCI_SRC_GAME BIT(0)
23#define EC_SCI_SRC_BATTERY BIT(1)
24#define EC_SCI_SRC_BATSOC BIT(2)
25#define EC_SCI_SRC_BATERR BIT(3)
26#define EC_SCI_SRC_EBOOK BIT(4) /* XO-1 only */
27#define EC_SCI_SRC_WLAN BIT(5) /* XO-1 only */
28#define EC_SCI_SRC_ACPWR BIT(6)
29#define EC_SCI_SRC_BATCRIT BIT(7)
30#define EC_SCI_SRC_GPWAKE BIT(8) /* XO-1.5 only */
31#define EC_SCI_SRC_ALL GENMASK(8, 0)
32
33struct platform_device;
34
35struct olpc_ec_driver {
36 int (*suspend)(struct platform_device *);
37 int (*resume)(struct platform_device *);
38
39 int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);
40
41 bool wakeup_available;
42};
43
44#ifdef CONFIG_OLPC_EC
45
46extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);
47
48extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
49 size_t outlen);
50
51extern void olpc_ec_wakeup_set(u16 value);
52extern void olpc_ec_wakeup_clear(u16 value);
53
54extern int olpc_ec_mask_write(u16 bits);
55extern int olpc_ec_sci_query(u16 *sci_value);
56
57extern bool olpc_ec_wakeup_available(void);
58
59asmlinkage int xo1_do_sleep(u8 sleep_state);
60
61#else
62
63static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
64 size_t outlen) { return -ENODEV; }
65
66static inline void olpc_ec_wakeup_set(u16 value) { }
67static inline void olpc_ec_wakeup_clear(u16 value) { }
68
69static inline bool olpc_ec_wakeup_available(void)
70{
71 return false;
72}
73
74#endif /* CONFIG_OLPC_EC */
75
76#endif /* _LINUX_OLPC_EC_H */
77

source code of linux/include/linux/olpc-ec.h