f030d7b65e
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: Brian Swetland <swetland@google.com>
144 lines
2.8 KiB
C
144 lines
2.8 KiB
C
/* 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
|