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 #else
60
olpc_ec_cmd(u8 cmd,u8 * inbuf,size_t inlen,u8 * outbuf,size_t outlen)61 static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
62 size_t outlen) { return -ENODEV; }
63
olpc_ec_wakeup_set(u16 value)64 static inline void olpc_ec_wakeup_set(u16 value) { }
olpc_ec_wakeup_clear(u16 value)65 static inline void olpc_ec_wakeup_clear(u16 value) { }
66
olpc_ec_wakeup_available(void)67 static inline bool olpc_ec_wakeup_available(void)
68 {
69 return false;
70 }
71
72 #endif /* CONFIG_OLPC_EC */
73
74 #endif /* _LINUX_OLPC_EC_H */
75