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Commit f030d7b6 authored by Brian Swetland's avatar Brian Swetland
Browse files

[ARM] msm: vreg interface to msm7k pmic 



The baseband cpu owns the pmic, so voltage regulator control is only
available via a relatively limited interface through the proc_comm
transport.

Signed-off-by: default avatarBrian Swetland <swetland@google.com>
parent 8a0f6f17

arch/arm/mach-msm/Makefile

+1 −0
Original line number Diff line number Diff line 
obj-y += io.o idle.o irq.o timer.o dma.o

obj-y += devices.o

obj-y += proc_comm.o

obj-y += vreg.o

obj-y += clock.o clock-7x01a.o



obj-$(CONFIG_MACH_HALIBUT) += board-halibut.o

arch/arm/mach-msm/include/mach/vreg.h

0 → 100644
+29 −0
Original line number Diff line number Diff line 
/* linux/include/asm-arm/arch-msm/vreg.h

 *

 * Copyright (C) 2008 Google, Inc.

 * Author: Brian Swetland <swetland@google.com>

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * 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.

 *

 */



#ifndef __ARCH_ARM_MACH_MSM_VREG_H

#define __ARCH_ARM_MACH_MSM_VREG_H



struct vreg;



struct vreg *vreg_get(struct device *dev, const char *id);

void vreg_put(struct vreg *vreg);



int vreg_enable(struct vreg *vreg);

void vreg_disable(struct vreg *vreg);

int vreg_set_level(struct vreg *vreg, unsigned mv);



#endif

arch/arm/mach-msm/vreg.c

0 → 100644
+143 −0
Original line number Diff line number Diff line 
/* arch/arm/mach-msm/vreg.c

 *

 * Copyright (C) 2008 Google, Inc.

 * Author: Brian Swetland <swetland@google.com>

 *

 * This software is licensed under the terms of the GNU General Public

 * License version 2, as published by the Free Software Foundation, and

 * may be copied, distributed, and modified under those terms.

 *

 * 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.

 *

 */



#include <linux/kernel.h>

#include <linux/device.h>

#include <linux/init.h>

#include <linux/debugfs.h>

#include <mach/vreg.h>



#include "proc_comm.h"



struct vreg {

	const char *name;

	unsigned id;

};



#define VREG(_name, _id) { .name = _name, .id = _id, }



static struct vreg vregs[] = {

	VREG("msma",	0),

	VREG("msmp",	1),

	VREG("msme1",	2),

	VREG("msmc1",	3),

	VREG("msmc2",	4),

	VREG("gp3",	5),

	VREG("msme2",	6),

	VREG("gp4",	7),

	VREG("gp1",	8),

	VREG("tcxo",	9),

	VREG("pa",	10),

	VREG("rftx",	11),

	VREG("rfrx1",	12),

	VREG("rfrx2",	13),

	VREG("synt",	14),

	VREG("wlan",	15),

	VREG("usb",	16),

	VREG("boost",	17),

	VREG("mmc",	18),

	VREG("ruim",	19),

	VREG("msmc0",	20),

	VREG("gp2",	21),

	VREG("gp5",	22),

	VREG("gp6",	23),

	VREG("rf",	24),

	VREG("rf_vco",	26),

	VREG("mpll",	27),

	VREG("s2",	28),

	VREG("s3",	29),

	VREG("rfubm",	30),

	VREG("ncp",	31),

};



struct vreg *vreg_get(struct device *dev, const char *id)

{

	int n;

	for (n = 0; n < ARRAY_SIZE(vregs); n++) {

		if (!strcmp(vregs[n].name, id))

			return vregs + n;

	}

	return 0;

}



void vreg_put(struct vreg *vreg)

{

}



int vreg_enable(struct vreg *vreg)

{

	unsigned id = vreg->id;

	unsigned enable = 1;

	return msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);

}



void vreg_disable(struct vreg *vreg)

{

	unsigned id = vreg->id;

	unsigned enable = 0;

	msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);

}



int vreg_set_level(struct vreg *vreg, unsigned mv)

{

	unsigned id = vreg->id;

	return msm_proc_comm(PCOM_VREG_SET_LEVEL, &id, &mv);

}



#if defined(CONFIG_DEBUG_FS)



static int vreg_debug_set(void *data, u64 val)

{

	struct vreg *vreg = data;

	switch (val) {

	case 0:

		vreg_disable(vreg);

		break;

	case 1:

		vreg_enable(vreg);

		break;

	default:

		vreg_set_level(vreg, val);

		break;

	}

	return 0;

}



static int vreg_debug_get(void *data, u64 *val)

{

	return -ENOSYS;

}



DEFINE_SIMPLE_ATTRIBUTE(vreg_fops, vreg_debug_get, vreg_debug_set, "%llu\n");



static int __init vreg_debug_init(void)

{

	struct dentry *dent;

	int n;



	dent = debugfs_create_dir("vreg", 0);

	if (IS_ERR(dent))

		return 0;



	for (n = 0; n < ARRAY_SIZE(vregs); n++)

		(void) debugfs_create_file(vregs[n].name, 0644,

					   dent, vregs + n, &vreg_fops);



	return 0;

}



device_initcall(vreg_debug_init);

#endif