olpc-ec.h (2000B)
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 33struct platform_device; 34 35struct 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 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 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 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 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 */ 73 74#endif /* _LINUX_OLPC_EC_H */