xref: /openbmc/linux/include/linux/olpc-ec.h (revision 454a3487)
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 
olpc_ec_cmd(u8 cmd,u8 * inbuf,size_t inlen,u8 * outbuf,size_t outlen)63 static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
64 		size_t outlen) { return -ENODEV; }
65 
olpc_ec_wakeup_set(u16 value)66 static inline void olpc_ec_wakeup_set(u16 value) { }
olpc_ec_wakeup_clear(u16 value)67 static inline void olpc_ec_wakeup_clear(u16 value) { }
68 
olpc_ec_wakeup_available(void)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