1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_OLPC_EC_H 3 #define _LINUX_OLPC_EC_H 4 5 /* XO-1 EC commands */ 6 #define EC_FIRMWARE_REV 0x08 7 #define EC_WRITE_SCI_MASK 0x1b 8 #define EC_WAKE_UP_WLAN 0x24 9 #define EC_WLAN_LEAVE_RESET 0x25 10 #define EC_DCON_POWER_MODE 0x26 11 #define EC_READ_EB_MODE 0x2a 12 #define EC_SET_SCI_INHIBIT 0x32 13 #define EC_SET_SCI_INHIBIT_RELEASE 0x34 14 #define EC_WLAN_ENTER_RESET 0x35 15 #define EC_WRITE_EXT_SCI_MASK 0x38 16 #define EC_SCI_QUERY 0x84 17 #define EC_EXT_SCI_QUERY 0x85 18 19 /* SCI source values */ 20 #define EC_SCI_SRC_EMPTY 0x00 21 #define EC_SCI_SRC_GAME 0x01 22 #define EC_SCI_SRC_BATTERY 0x02 23 #define EC_SCI_SRC_BATSOC 0x04 24 #define EC_SCI_SRC_BATERR 0x08 25 #define EC_SCI_SRC_EBOOK 0x10 /* XO-1 only */ 26 #define EC_SCI_SRC_WLAN 0x20 /* XO-1 only */ 27 #define EC_SCI_SRC_ACPWR 0x40 28 #define EC_SCI_SRC_BATCRIT 0x80 29 #define EC_SCI_SRC_GPWAKE 0x100 /* XO-1.5 only */ 30 #define EC_SCI_SRC_ALL 0x1FF 31 32 struct platform_device; 33 34 struct olpc_ec_driver { 35 int (*suspend)(struct platform_device *); 36 int (*resume)(struct platform_device *); 37 38 int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *); 39 40 bool wakeup_available; 41 }; 42 43 #ifdef CONFIG_OLPC 44 45 extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg); 46 47 extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, 48 size_t outlen); 49 50 extern void olpc_ec_wakeup_set(u16 value); 51 extern void olpc_ec_wakeup_clear(u16 value); 52 53 extern int olpc_ec_mask_write(u16 bits); 54 extern int olpc_ec_sci_query(u16 *sci_value); 55 56 extern bool olpc_ec_wakeup_available(void); 57 58 #else 59 60 static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, 61 size_t outlen) { return -ENODEV; } 62 63 static inline void olpc_ec_wakeup_set(u16 value) { } 64 static inline void olpc_ec_wakeup_clear(u16 value) { } 65 66 static inline bool olpc_ec_wakeup_available(void) 67 { 68 return false; 69 } 70 71 #endif /* CONFIG_OLPC */ 72 73 #endif /* _LINUX_OLPC_EC_H */ 74