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arm: msm: status for vreg

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Keep track of the success/failure of the last vreg proc comm
command, and return that on debugfs reads.

Signed-off-by: Steve Muckle <smuckle@quicinc.com>
This commit is contained in:
Steve Muckle 2008-12-12 19:33:55 -05:00 committed by Daniel Walker
parent 0c50b444b6
commit 4783de9bba
2 changed files with 54 additions and 38 deletions
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2
arch/arm/mach-msm/include/mach/vreg.h
View file

@ -23,7 +23,7 @@ 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_disable(struct vreg *vreg);
int vreg_set_level(struct vreg *vreg, unsigned mv);
#endif

90
arch/arm/mach-msm/vreg.c
View file

@ -1,6 +1,7 @@
/* arch/arm/mach-msm/vreg.c
*
* Copyright (C) 2008 Google, Inc.
* Copyright (c) 2009, Code Aurora Forum. All rights reserved.
* Author: Brian Swetland <swetland@google.com>
*
* This software is licensed under the terms of the GNU General Public
@ -25,42 +26,44 @@
struct vreg {
const char *name;
unsigned id;
int status;
};
#define VREG(_name, _id) { .name = _name, .id = _id, }
#define VREG(_name, _id, _status) \
{ .name = _name, .id = _id, .status = _status }
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),
VREG("msma", 0, 0),
VREG("msmp", 1, 0),
VREG("msme1", 2, 0),
VREG("msmc1", 3, 0),
VREG("msmc2", 4, 0),
VREG("gp3", 5, 0),
VREG("msme2", 6, 0),
VREG("gp4", 7, 0),
VREG("gp1", 8, 0),
VREG("tcxo", 9, 0),
VREG("pa", 10, 0),
VREG("rftx", 11, 0),
VREG("rfrx1", 12, 0),
VREG("rfrx2", 13, 0),
VREG("synt", 14, 0),
VREG("wlan", 15, 0),
VREG("usb", 16, 0),
VREG("boost", 17, 0),
VREG("mmc", 18, 0),
VREG("ruim", 19, 0),
VREG("msmc0", 20, 0),
VREG("gp2", 21, 0),
VREG("gp5", 22, 0),
VREG("gp6", 23, 0),
VREG("rf", 24, 0),
VREG("rf_vco", 26, 0),
VREG("mpll", 27, 0),
VREG("s2", 28, 0),
VREG("s3", 29, 0),
VREG("rfubm", 30, 0),
VREG("ncp", 31, 0),
};
struct vreg *vreg_get(struct device *dev, const char *id)
@ -81,20 +84,26 @@ int vreg_enable(struct vreg *vreg)
{
unsigned id = vreg->id;
unsigned enable = 1;
return msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
vreg->status = msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
return vreg->status;
}
void vreg_disable(struct vreg *vreg)
int vreg_disable(struct vreg *vreg)
{
unsigned id = vreg->id;
unsigned enable = 0;
msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
vreg->status = msm_proc_comm(PCOM_VREG_SWITCH, &id, &enable);
return vreg->status;
}
int vreg_set_level(struct vreg *vreg, unsigned mv)
{
unsigned id = vreg->id;
return msm_proc_comm(PCOM_VREG_SET_LEVEL, &id, &mv);
vreg->status = msm_proc_comm(PCOM_VREG_SET_LEVEL, &id, &mv);
return vreg->status;
}
#if defined(CONFIG_DEBUG_FS)
@ -118,7 +127,14 @@ static int vreg_debug_set(void *data, u64 val)
static int vreg_debug_get(void *data, u64 *val)
{
return -ENOSYS;
struct vreg *vreg = data;
if (!vreg->status)
*val = 0;
else
*val = 1;
return 0;
}
DEFINE_SIMPLE_ATTRIBUTE(vreg_fops, vreg_debug_get, vreg_debug_set, "%llu\n");