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/* 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 ERR_PTR(-ENOENT);
}
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
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