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 | |
33 | struct platform_device; |
34 | |
35 | struct 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 | |
46 | extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg); |
47 | |
48 | extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, |
49 | size_t outlen); |
50 | |
51 | extern void olpc_ec_wakeup_set(u16 value); |
52 | extern void olpc_ec_wakeup_clear(u16 value); |
53 | |
54 | extern int olpc_ec_mask_write(u16 bits); |
55 | extern int olpc_ec_sci_query(u16 *sci_value); |
56 | |
57 | extern bool olpc_ec_wakeup_available(void); |
58 | |
59 | asmlinkage int xo1_do_sleep(u8 sleep_state); |
60 | |
61 | #else |
62 | |
63 | static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, |
64 | size_t outlen) { return -ENODEV; } |
65 | |
66 | static inline void olpc_ec_wakeup_set(u16 value) { } |
67 | static inline void olpc_ec_wakeup_clear(u16 value) { } |
68 | |
69 | static 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 | |