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Move the AC line checking code into its own function, reducing the

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ifdef __i386__ stuff for APM.  Tested as working correctly on i386 and
compile-tested on sparc64.
This commit is contained in:
Nate Lawson 2005-02-27 01:58:49 +00:00
parent 46793db95b
commit 48bd710904
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=142605
1 changed files with 55 additions and 40 deletions
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95
usr.sbin/powerd/powerd.c
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@ -71,6 +71,8 @@ const char *modes[] = {
static int read_usage_times(long *idle, long *total);
static int read_freqs(int *numfreqs, int **freqs);
static int set_freq(int freq);
static void acline_init(void);
static int acline_read(void);
static void parse_mode(char *arg, int *mode, int ch);
static void usage(void);
@ -85,6 +87,8 @@ static int cpu_running_mark;
static int cpu_idle_mark;
static int poll_ival;
static int apm_fd;
static int
read_usage_times(long *idle, long *total)
{
@ -160,6 +164,52 @@ set_freq(int freq)
return (0);
}
/*
* Try to use ACPI to find the AC line status. If this fails, fall back
* to APM. If nothing succeeds, we'll just run in default mode.
*/
static void
acline_init()
{
int acline;
size_t len;
apm_fd = -1;
len = sizeof(acline);
if (sysctlbyname(ACPIAC, &acline, &len, NULL, 0) == 0) {
len = 3;
if (sysctlnametomib(ACPIAC, acline_mib, &len))
err(1, "lookup acline");
} else {
apm_fd = open(APMDEV, O_RDONLY);
if (apm_fd == -1)
warnx(
"cannot read AC line status, using default settings");
}
}
static int
acline_read()
{
int acline = SRC_UNKNOWN;
size_t len;
#ifdef __i386__
struct apm_info info;
if (apm_fd != -1 && ioctl(apm_fd, APMIO_GETINFO, &info) == 0)
acline = info.ai_acline ? SRC_AC : SRC_BATTERY;
#endif
if (acline == SRC_UNKNOWN) {
len = sizeof(acline);
if (sysctl(acline_mib, 3, &acline, &len, NULL, 0) == 0)
acline = acline ? SRC_AC : SRC_BATTERY;
}
return (acline);
}
static void
parse_mode(char *arg, int *mode, int ch)
{
@ -186,11 +236,8 @@ usage(void)
int
main(int argc, char * argv[])
{
#ifdef __i386__
struct apm_info info;
#endif
long idle, total;
int apm_fd, curfreq, *freqs, i, numfreqs;
int curfreq, *freqs, i, numfreqs;
int ch, mode_ac, mode_battery, mode_none, acline, mode, vflag;
size_t len;
@ -200,6 +247,7 @@ main(int argc, char * argv[])
cpu_idle_mark = DEFAULT_IDLE_PERCENT;
poll_ival = DEFAULT_POLL_INTERVAL;
vflag = 0;
apm_fd = -1;
while ((ch = getopt(argc, argv, "a:b:i:n:p:r:v")) != EOF)
switch (ch) {
@ -263,22 +311,7 @@ main(int argc, char * argv[])
err(1, "error reading supported CPU frequencies");
/* Decide whether to use ACPI or APM to read the AC line status. */
apm_fd = -1;
len = sizeof(acline);
if (sysctlbyname(ACPIAC, &acline, &len, NULL, 0)) {
#ifdef __i386__
/* ACPI disabled, try APM */
apm_fd = open(APMDEV, O_RDONLY);
#endif
if (apm_fd == -1) {
warnx("cannot read AC line status, "
"using default settings");
}
} else {
len = 3;
if (sysctlnametomib(ACPIAC, acline_mib, &len))
err(1, "lookup acline");
}
acline_init();
/* Run in the background unless in verbose mode. */
if (!vflag)
@ -290,20 +323,7 @@ main(int argc, char * argv[])
usleep(poll_ival);
/* Read the current AC status and record the mode. */
if (apm_fd != -1) {
#ifdef __i386__
if (ioctl(apm_fd, APMIO_GETINFO, &info) == -1)
acline = SRC_UNKNOWN;
else
acline = info.ai_acline ? SRC_AC : SRC_BATTERY;
#endif
} else {
len = sizeof(acline);
if (sysctl(acline_mib, 3, &acline, &len, NULL, 0))
acline = SRC_UNKNOWN;
else
acline = acline ? SRC_AC : SRC_BATTERY;
}
acline = acline_read();
switch (acline) {
case SRC_AC:
mode = mode_ac;
@ -342,7 +362,7 @@ main(int argc, char * argv[])
if (mode == MODE_MAX) {
if (curfreq != freqs[0]) {
if (vflag) {
printf("Now operating on %s power; "
printf("now operating on %s power; "
"changing frequency to %d MHz\n",
modes[acline], freqs[0]);
}
@ -391,10 +411,5 @@ main(int argc, char * argv[])
}
/* NOTREACHED */
#ifdef __i386__
if (apm_fd != -1)
close(apm_fd);
#endif
exit(0);
}