1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun #ifndef _LINUX_OLPC_EC_H
3*4882a593Smuzhiyun #define _LINUX_OLPC_EC_H
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun #include <linux/bits.h>
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun /* XO-1 EC commands */
8*4882a593Smuzhiyun #define EC_FIRMWARE_REV 0x08
9*4882a593Smuzhiyun #define EC_WRITE_SCI_MASK 0x1b
10*4882a593Smuzhiyun #define EC_WAKE_UP_WLAN 0x24
11*4882a593Smuzhiyun #define EC_WLAN_LEAVE_RESET 0x25
12*4882a593Smuzhiyun #define EC_DCON_POWER_MODE 0x26
13*4882a593Smuzhiyun #define EC_READ_EB_MODE 0x2a
14*4882a593Smuzhiyun #define EC_SET_SCI_INHIBIT 0x32
15*4882a593Smuzhiyun #define EC_SET_SCI_INHIBIT_RELEASE 0x34
16*4882a593Smuzhiyun #define EC_WLAN_ENTER_RESET 0x35
17*4882a593Smuzhiyun #define EC_WRITE_EXT_SCI_MASK 0x38
18*4882a593Smuzhiyun #define EC_SCI_QUERY 0x84
19*4882a593Smuzhiyun #define EC_EXT_SCI_QUERY 0x85
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun /* SCI source values */
22*4882a593Smuzhiyun #define EC_SCI_SRC_GAME BIT(0)
23*4882a593Smuzhiyun #define EC_SCI_SRC_BATTERY BIT(1)
24*4882a593Smuzhiyun #define EC_SCI_SRC_BATSOC BIT(2)
25*4882a593Smuzhiyun #define EC_SCI_SRC_BATERR BIT(3)
26*4882a593Smuzhiyun #define EC_SCI_SRC_EBOOK BIT(4) /* XO-1 only */
27*4882a593Smuzhiyun #define EC_SCI_SRC_WLAN BIT(5) /* XO-1 only */
28*4882a593Smuzhiyun #define EC_SCI_SRC_ACPWR BIT(6)
29*4882a593Smuzhiyun #define EC_SCI_SRC_BATCRIT BIT(7)
30*4882a593Smuzhiyun #define EC_SCI_SRC_GPWAKE BIT(8) /* XO-1.5 only */
31*4882a593Smuzhiyun #define EC_SCI_SRC_ALL GENMASK(8, 0)
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun struct platform_device;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun struct olpc_ec_driver {
36*4882a593Smuzhiyun int (*suspend)(struct platform_device *);
37*4882a593Smuzhiyun int (*resume)(struct platform_device *);
38*4882a593Smuzhiyun
39*4882a593Smuzhiyun int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);
40*4882a593Smuzhiyun
41*4882a593Smuzhiyun bool wakeup_available;
42*4882a593Smuzhiyun };
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun #ifdef CONFIG_OLPC_EC
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);
47*4882a593Smuzhiyun
48*4882a593Smuzhiyun extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
49*4882a593Smuzhiyun size_t outlen);
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun extern void olpc_ec_wakeup_set(u16 value);
52*4882a593Smuzhiyun extern void olpc_ec_wakeup_clear(u16 value);
53*4882a593Smuzhiyun
54*4882a593Smuzhiyun extern int olpc_ec_mask_write(u16 bits);
55*4882a593Smuzhiyun extern int olpc_ec_sci_query(u16 *sci_value);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun extern bool olpc_ec_wakeup_available(void);
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun #else
60*4882a593Smuzhiyun
olpc_ec_cmd(u8 cmd,u8 * inbuf,size_t inlen,u8 * outbuf,size_t outlen)61*4882a593Smuzhiyun static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
62*4882a593Smuzhiyun size_t outlen) { return -ENODEV; }
63*4882a593Smuzhiyun
olpc_ec_wakeup_set(u16 value)64*4882a593Smuzhiyun static inline void olpc_ec_wakeup_set(u16 value) { }
olpc_ec_wakeup_clear(u16 value)65*4882a593Smuzhiyun static inline void olpc_ec_wakeup_clear(u16 value) { }
66*4882a593Smuzhiyun
olpc_ec_wakeup_available(void)67*4882a593Smuzhiyun static inline bool olpc_ec_wakeup_available(void)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun return false;
70*4882a593Smuzhiyun }
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun #endif /* CONFIG_OLPC_EC */
73*4882a593Smuzhiyun
74*4882a593Smuzhiyun #endif /* _LINUX_OLPC_EC_H */
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