Hallo,
appended patch exposes the switches of the w83781d.
On my Gigabyte BXD board, the fans of the two CPUs are connected to these
switches. With the simple "fanctrl.c" as example, I monitor system activity
and switch off the fans if most time is taken by the idle process.
Bye
--
Uwe Bonnes bon at elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
--- /tmp/w83781d.c 2003-11-16 17:50:11.000000000 +0100
+++ linux/drivers/sensors/w83781d.c 2003-11-15 19:58:40.000000000 +0100
@@ -391,6 +391,7 @@
u8 rt[3][32]; /* Register value */
#endif
u8 vrm;
+ u8 sw;
};
@@ -432,6 +433,8 @@
static void w83781d_rt(struct i2c_client *client, int operation,
int ctl_name, int *nrels_mag, long *results);
#endif
+static void w83781d_sw(struct i2c_client *client, int operation,
+ int ctl_name, int *nrels_mag, long *results);
static u16 swap_bytes(u16 val);
static int w83781d_id = 0;
@@ -473,6 +476,7 @@
#define W83781D_SYSCTL_PWM2 1402
#define W83781D_SYSCTL_PWM3 1403
#define W83781D_SYSCTL_PWM4 1404
+#define W83781D_SYSCTL_SW 1405
#define W83781D_SYSCTL_SENS1 1501 /* 1, 2, or Beta (3000-5000) */
#define W83781D_SYSCTL_SENS2 1502
#define W83781D_SYSCTL_SENS3 1503
@@ -599,6 +603,8 @@
{W83781D_SYSCTL_RT3, "rt3", NULL, 0, 0644, NULL, &i2c_proc_real,
&i2c_sysctl_real, NULL, &w83781d_rt},
#endif
+ {W83781D_SYSCTL_SW, "sw", NULL, 0, 0644, NULL, &i2c_proc_real,
+ &i2c_sysctl_real, NULL, &w83781d_sw},
{0}
};
@@ -1747,6 +1753,7 @@
data->beep_enable = i >> 7;
data->beeps = ((i & 0x7f) << 8) +
w83781d_read_value(client, W83781D_REG_BEEP_INTS1);
+ data->sw = w83781d_read_value(client, W83781D_REG_BEEP_CONFIG) & 0x3f;
if ((data->type != w83781d) && (data->type != as99127f)
&& (data->type != w83791d)) {
data->beeps |=
@@ -2108,6 +2115,26 @@
}
}
+void w83781d_sw(struct i2c_client *client, int operation, int ctl_name,
+ int *nrels_mag, long *results)
+{
+ struct w83781d_data *data = client->data;
+
+ if (operation == SENSORS_PROC_REAL_INFO)
+ *nrels_mag = 0;
+ else if (operation == SENSORS_PROC_REAL_READ) {
+ w83781d_update_client(client);
+ results[0] = data->sw;
+ *nrels_mag = 1;
+ } else if (operation == SENSORS_PROC_REAL_WRITE) {
+ if (*nrels_mag >= 1) {
+ data->sw = results[0] & 0x3f;
+ w83781d_write_value(client, W83781D_REG_BEEP_CONFIG,
+ data->sw);
+ }
+ }
+}
+
void w83781d_sens(struct i2c_client *client, int operation, int ctl_name,
int *nrels_mag, long *results)
{
====sampe usage for the sw: fanctrl.c=====
#include <unistd.h>
#include <stdio.h>
#define DO_RUN "echo 21 >/proc/sys/dev/sensors/w83781d-isa-0290/sw"
#define DO_STOP "echo 5 >/proc/sys/dev/sensors/w83781d-isa-0290/sw"
int main(int argc, char** argv)
{
int fanrun=1;
unsigned int index=0;
FILE *uptime;
char buffer[256];
unsigned int total[6],idle[6];
unsigned int value1,value2,value3,value4;
uptime = fopen("/proc/uptime", "r" );
if (!uptime) {
fprintf(stderr,"can't get /proc/uptime entry\n");
return 1;
}
if (!fgets( buffer, sizeof(buffer), uptime )) {
fprintf(stderr,"can't get anything out of /proc/uptime\n");
return 2;
}
if (sscanf( buffer,"%d.%d %d.%d",&value1,&value2,&value3,&value4)!=4) {
fprintf(stderr,"can't get desired entries\n");
return 3;
}
total[0]=total[1]=total[2]=total[3]=total[4]=total[5]=value1*100+value2;
idle[0]=idle[1]=idle[2]=idle[3]=idle[4]=idle[5]=value3*100+value4;
index++;
fclose(uptime);
daemon (0,0);
while (1) {
sleep(15);
uptime = fopen("/proc/uptime", "r" );
fgets( buffer, sizeof(buffer), uptime );
fclose(uptime);
sscanf( buffer,"%d.%d %d.%d",&value1,&value2,&value3,&value4);
total[index%6]=value1*100+value2;
idle[index%6]=value3*100+value4;
#if 0
fprintf(stdout, "index %d index1 %d\n",index%6,(index-1)%6);
fprintf(stdout, "idle[%d] %d total[%d] %d\n", index%6,idle[index%6],index%6,total[index%6]);
fprintf(stdout, "idle[%d] %d total[%d] %d\n", (index-1)%6,idle[(index-1)%6],(index-1)%6,total[(index-1)%6]);
fprintf(stdout,"idle %d total %d\n\n",idle[index%6]-idle[(index-1)%6],total[index%6]-total[(index-1)%6]);
#endif
#if 0
if ( (((idle[index%6]-idle[(index-1)%6])*1000)/(total[index%6]-total[(index-1)%6]))> 600)
fprintf(stdout,"short term idle ");
else
fprintf(stdout,"short term active");
fprintf(stdout," %3d %3d",(((idle[index%6]-idle[(index-1)%6])*1000)/(total[index%6]-total[(index-1)%6])),(((idle[index%6]-idle[(index-5)%6])*1000)/(total[index%6]-total[(index-5)%6])));
if ( (((idle[index%6]-idle[(index-5)%6])*1000)/(total[index%6]-total[(index-5)%6]))> 750)
fprintf(stdout," long term idle \n");
else
fprintf(stdout," long term active\n");
#endif
if ( ((((idle[index%6]-idle[(index-1)%6])*1000)/(total[index%6]-total[(index-1)%6]))< 550)
||((((idle[index%6]-idle[(index-5)%6])*1000)/(total[index%6]-total[(index-5)%6]))< 800)) {
if (!fanrun) {
fprintf(stdout, "switch ON\n");
system(DO_RUN);
fanrun=1;
}
}
else
if(fanrun) {
fprintf(stdout, "switch OFF \n");
system(DO_STOP);
fanrun=0;
}
index++;
}
return 0;
}
