include/linux/olpc-ec.h

   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
  63 static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
  64                 size_t outlen) { return -ENODEV; }
  65
  66 static inline void olpc_ec_wakeup_set(u16 value) { }
  67 static inline void olpc_ec_wakeup_clear(u16 value) { }
  68
  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 */