LXR linux/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
  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 */
  75