[GitHub/mt8127/android_kernel_alcatel_ttab.git] / include / asm-powerpc / pmi.h

#ifndef _POWERPC_PMI_H
#define _POWERPC_PMI_H

/*
 * Definitions for talking with PMI device on PowerPC
 *
 * PMI (Platform Management Interrupt) is a way to communicate
 * with the BMC (Baseboard Management Controller) via interrupts.
 * Unlike IPMI it is bidirectional and has a low latency.
 *
 * (C) Copyright IBM Deutschland Entwicklung GmbH 2005
 *
 * Author: Christian Krafft <krafft@de.ibm.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifdef __KERNEL__

#include <asm/of_device.h>

#define PMI_TYPE_FREQ_CHANGE	0x01
#define PMI_READ_TYPE		0
#define PMI_READ_DATA0		1
#define PMI_READ_DATA1		2
#define PMI_READ_DATA2		3
#define PMI_WRITE_TYPE		4
#define PMI_WRITE_DATA0		5
#define PMI_WRITE_DATA1		6
#define PMI_WRITE_DATA2		7

#define PMI_ACK			0x80

#define PMI_TIMEOUT		100

typedef struct {
	u8	type;
	u8	data0;
	u8	data1;
	u8	data2;
} pmi_message_t;

struct pmi_handler {
	struct list_head node;
	u8 type;
	void (*handle_pmi_message) (pmi_message_t);
};

int pmi_register_handler(struct pmi_handler *);
void pmi_unregister_handler(struct pmi_handler *);

int pmi_send_message(pmi_message_t);

#endif /* __KERNEL__ */
#endif /* _POWERPC_PMI_H */
Commit	Line	Data
0e826643 CK	1	#ifndef _POWERPC_PMI_H
	2	#define _POWERPC_PMI_H
	3
	4	/*
	5	* Definitions for talking with PMI device on PowerPC
	6	*
	7	* PMI (Platform Management Interrupt) is a way to communicate
	8	* with the BMC (Baseboard Management Controller) via interrupts.
	9	* Unlike IPMI it is bidirectional and has a low latency.
	10	*
	11	* (C) Copyright IBM Deutschland Entwicklung GmbH 2005
	12	*
	13	* Author: Christian Krafft <krafft@de.ibm.com>
	14	*
	15	* This program is free software; you can redistribute it and/or modify
	16	* it under the terms of the GNU General Public License as published by
	17	* the Free Software Foundation; either version 2, or (at your option)
	18	* any later version.
	19	*
	20	* This program is distributed in the hope that it will be useful,
	21	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	22	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	23	* GNU General Public License for more details.
	24	*
	25	* You should have received a copy of the GNU General Public License
	26	* along with this program; if not, write to the Free Software
	27	* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
	28	*/
	29
	30	#ifdef __KERNEL__
	31
	32	#include <asm/of_device.h>
	33
	34	#define PMI_TYPE_FREQ_CHANGE 0x01
	35	#define PMI_READ_TYPE 0
	36	#define PMI_READ_DATA0 1
	37	#define PMI_READ_DATA1 2
	38	#define PMI_READ_DATA2 3
	39	#define PMI_WRITE_TYPE 4
	40	#define PMI_WRITE_DATA0 5
	41	#define PMI_WRITE_DATA1 6
	42	#define PMI_WRITE_DATA2 7
	43
	44	#define PMI_ACK 0x80
	45
	46	#define PMI_TIMEOUT 100
	47
	48	typedef struct {
	49	u8 type;
	50	u8 data0;
	51	u8 data1;
	52	u8 data2;
	53	} pmi_message_t;
	54
	55	struct pmi_handler {
	56	struct list_head node;
	57	u8 type;
813f9072	58	void (*handle_pmi_message) (pmi_message_t);
0e826643 CK	59	};
0e826643 CK	60
813f9072 CK	61	int pmi_register_handler(struct pmi_handler *);
813f9072 CK	62	void pmi_unregister_handler(struct pmi_handler *);
0e826643	63
813f9072	64	int pmi_send_message(pmi_message_t);
0e826643 CK	65
	66	#endif /* __KERNEL__ */
	67	#endif /* _POWERPC_PMI_H */