[linux-block.git] / include / linux / olpc-ec.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_OLPC_EC_H
#define _LINUX_OLPC_EC_H

#include <linux/bits.h>

/* XO-1 EC commands */
#define EC_FIRMWARE_REV			0x08
#define EC_WRITE_SCI_MASK		0x1b
#define EC_WAKE_UP_WLAN			0x24
#define EC_WLAN_LEAVE_RESET		0x25
#define EC_DCON_POWER_MODE		0x26
#define EC_READ_EB_MODE			0x2a
#define EC_SET_SCI_INHIBIT		0x32
#define EC_SET_SCI_INHIBIT_RELEASE	0x34
#define EC_WLAN_ENTER_RESET		0x35
#define EC_WRITE_EXT_SCI_MASK		0x38
#define EC_SCI_QUERY			0x84
#define EC_EXT_SCI_QUERY		0x85

/* SCI source values */
#define EC_SCI_SRC_GAME         BIT(0)
#define EC_SCI_SRC_BATTERY      BIT(1)
#define EC_SCI_SRC_BATSOC       BIT(2)
#define EC_SCI_SRC_BATERR       BIT(3)
#define EC_SCI_SRC_EBOOK        BIT(4)    /* XO-1 only */
#define EC_SCI_SRC_WLAN         BIT(5)    /* XO-1 only */
#define EC_SCI_SRC_ACPWR        BIT(6)
#define EC_SCI_SRC_BATCRIT      BIT(7)
#define EC_SCI_SRC_GPWAKE       BIT(8)   /* XO-1.5 only */
#define EC_SCI_SRC_ALL          GENMASK(8, 0)

struct platform_device;

struct olpc_ec_driver {
	int (*suspend)(struct platform_device *);
	int (*resume)(struct platform_device *);

	int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);

	bool wakeup_available;
};

#ifdef CONFIG_OLPC_EC

extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);

extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
		size_t outlen);

extern void olpc_ec_wakeup_set(u16 value);
extern void olpc_ec_wakeup_clear(u16 value);

extern int olpc_ec_mask_write(u16 bits);
extern int olpc_ec_sci_query(u16 *sci_value);

extern bool olpc_ec_wakeup_available(void);

#else

static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
		size_t outlen) { return -ENODEV; }

static inline void olpc_ec_wakeup_set(u16 value) { }
static inline void olpc_ec_wakeup_clear(u16 value) { }

static inline bool olpc_ec_wakeup_available(void)
{
	return false;
}

#endif /* CONFIG_OLPC_EC */

#endif /* _LINUX_OLPC_EC_H */
Commit	Line	Data
b2441318	1	/* SPDX-License-Identifier: GPL-2.0 */
392a325c AS	2	#ifndef _LINUX_OLPC_EC_H
	3	#define _LINUX_OLPC_EC_H
	4
8097548f LR	5	#include <linux/bits.h>
8097548f LR	6
392a325c AS	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
98d4f93c	12	#define EC_DCON_POWER_MODE 0x26
392a325c AS	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
ec9964b4	21	/* SCI source values */
8097548f LR	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)
ec9964b4	32
ac250415 AS	33	struct platform_device;
ac250415 AS	34
3d26c20b	35	struct olpc_ec_driver {
ac250415 AS	36	int (suspend)(struct platform_device );
	37	int (resume)(struct platform_device );
	38
3d26c20b	39	int (ec_cmd)(u8, u8 , size_t, u8 , size_t, void );
ec9964b4 LR	40
ec9964b4 LR	41	bool wakeup_available;
3d26c20b AS	42	};
3d26c20b AS	43
0c3d931b	44	#ifdef CONFIG_OLPC_EC
392a325c	45
3d26c20b AS	46	extern void olpc_ec_driver_register(struct olpc_ec_driver drv, void arg);
3d26c20b AS	47
392a325c AS	48	extern int olpc_ec_cmd(u8 cmd, u8 inbuf, size_t inlen, u8 outbuf,
	49	size_t outlen);
	50
ec9964b4 LR	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
392a325c AS	59	#else
	60
	61	static inline int olpc_ec_cmd(u8 cmd, u8 inbuf, size_t inlen, u8 outbuf,
	62	size_t outlen) { return -ENODEV; }
	63
ec9964b4 LR	64	static inline void olpc_ec_wakeup_set(u16 value) { }
	65	static inline void olpc_ec_wakeup_clear(u16 value) { }
	66
	67	static inline bool olpc_ec_wakeup_available(void)
	68	{
	69	return false;
	70	}
	71
0c3d931b	72	#endif /* CONFIG_OLPC_EC */
392a325c AS	73
392a325c AS	74	#endif /* _LINUX_OLPC_EC_H */