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review.trustedfirmware.org / hafnium / third_party / linux.git / 0f672f6c0b52b7b0700b0915c72b540721af4465 / . / include / linux / olpc-ec.h
blob: c4602364e909dd059d71fb24268f7754a0a9a688 [file] [log] [blame]
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _LINUX_OLPC_EC_H
3#define _LINUX_OLPC_EC_H
4
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]5#include <linux/bits.h>
6
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]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
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]33struct platform_device;
34
35struct olpc_ec_driver {
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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 *);
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]40
41 bool wakeup_available;
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]42};
43
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]44#ifdef CONFIG_OLPC_EC
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]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
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]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
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]59#else
60
61static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
62 size_t outlen) { return -ENODEV; }
63
David Brazdil0f672f62019-12-10 10:32:29 +0000[diff] [blame^]64static inline void olpc_ec_wakeup_set(u16 value) { }
65static inline void olpc_ec_wakeup_clear(u16 value) { }
66
67static inline bool olpc_ec_wakeup_available(void)
68{
69 return false;
70}
71
72#endif /* CONFIG_OLPC_EC */
Andrew Scullb4b6d4a2019-01-02 15:54:55 +0000[diff] [blame]73
74#endif /* _LINUX_OLPC_EC_H */