olpc-ec.h 2.0 KB

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  1. /* SPDX-License-Identifier: GPL-2.0 */
  2. #ifndef _LINUX_OLPC_EC_H
  3. #define _LINUX_OLPC_EC_H
  4. #include <linux/bits.h>
  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. /* SCI source values */
  19. #define EC_SCI_SRC_GAME BIT(0)
  20. #define EC_SCI_SRC_BATTERY BIT(1)
  21. #define EC_SCI_SRC_BATSOC BIT(2)
  22. #define EC_SCI_SRC_BATERR BIT(3)
  23. #define EC_SCI_SRC_EBOOK BIT(4) /* XO-1 only */
  24. #define EC_SCI_SRC_WLAN BIT(5) /* XO-1 only */
  25. #define EC_SCI_SRC_ACPWR BIT(6)
  26. #define EC_SCI_SRC_BATCRIT BIT(7)
  27. #define EC_SCI_SRC_GPWAKE BIT(8) /* XO-1.5 only */
  28. #define EC_SCI_SRC_ALL GENMASK(8, 0)
  29. struct platform_device;
  30. struct olpc_ec_driver {
  31. int (*suspend)(struct platform_device *);
  32. int (*resume)(struct platform_device *);
  33. int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);
  34. bool wakeup_available;
  35. };
  36. #ifdef CONFIG_OLPC_EC
  37. extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);
  38. extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
  39. size_t outlen);
  40. extern void olpc_ec_wakeup_set(u16 value);
  41. extern void olpc_ec_wakeup_clear(u16 value);
  42. extern int olpc_ec_mask_write(u16 bits);
  43. extern int olpc_ec_sci_query(u16 *sci_value);
  44. extern bool olpc_ec_wakeup_available(void);
  45. #else
  46. static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
  47. size_t outlen) { return -ENODEV; }
  48. static inline void olpc_ec_wakeup_set(u16 value) { }
  49. static inline void olpc_ec_wakeup_clear(u16 value) { }
  50. static inline bool olpc_ec_wakeup_available(void)
  51. {
  52. return false;
  53. }
  54. #endif /* CONFIG_OLPC_EC */
  55. #endif /* _LINUX_OLPC_EC_H */