wt/lm-sensors
1
0 Fork 0
mirror of https://github.com/lm-sensors/lm-sensors.git synced 2026-11-11 16:40:16 +00:00
Code Issues Packages Projects Releases Wiki Activity

Initialize fan clock dividers upon load.

Browse Source 
Prevent fan_min register overflow on auto fan clock divider
        decrease.
        Prevent writes on pwm 3 registers on PC87360 and PC87363.


git-svn-id: http://lm-sensors.org/svn/lm-sensors/trunk@2531 7894878c-1315-0410-8ee3-d5d059ff63e0
This commit is contained in:
Jean Delvare committed 2004-05-14 19:20:08 +00:00
1 parent 961547c959
commit 6555d0a328
1 file changed
+24 -10
Download Patch File Download Diff File Expand all files Collapse all files
kernel/chips/pc87360.c
+24 -10
View File
@@ -22,12 +22,12 @@
*
* Supports the following chips:
*
* Chip #vin #fan #pwm #temp devid
* PC87360 - 2 2 - 0xE1
* PC87363 - 2 2 - 0xE8
* PC87364 - 3 3 - 0xE4
* PC87365 11 3 3 2 0xE5
* PC87366 11 3 3 3 0xE9
* Chip #vin #fan #pwm #temp devid
* PC87360 - 2 2 - 0xE1
* PC87363 - 2 2 - 0xE8
* PC87364 - 3 3 - 0xE4
* PC87365 11 3 3 2 0xE5
* PC87366 11 3 3 3 0xE9
*/
#include <linux/module.h>
@@ -609,6 +609,12 @@ int pc87360_detect(struct i2c_adapter *adapter, int address,
#endif
}
/* Fan clock dividers may be needed before any data is read */
for (i = 0; i < data->fannr; i++) {
data->fan_status[i] = pc87360_read_value(data, LD_FAN,
NO_BANK, PC87360_REG_FAN_STATUS(i));
}
if (init > 0)
pc87360_init_client(new_client);
@@ -791,22 +797,28 @@ static void pc87360_update_client(struct i2c_client *client)
data->fan_min[i]);
#ifdef DEBUG
printk(KERN_DEBUG "pc87360.o: Increasing "
"clock divider for fan %d\n", i+1);
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[i]),
i+1);
#endif
} else
/* Decrease clock divider if possible */
if ((data->fan_status[i] & 0x60) != 0x00
&& !(data->fan_status[i] & 0x04)
&& (data->fan[i] & 0xC0) == 0x00) {
&& data->fan[i] <= 0x50) {
data->fan_status[i] -= 0x20;
data->fan_min[i] <<= 1;
data->fan_min[i] = (data->fan_min[i] & 0x80)
? 255 :
(data->fan_min[i] << 1);
data->fan[i] <<= 1;
pc87360_write_value(data, LD_FAN, NO_BANK,
PC87360_REG_FAN_MIN(i),
data->fan_min[i]);
#ifdef DEBUG
printk(KERN_DEBUG "pc87360.o: Decreasing "
"clock divider for fan %d\n", i+1);
"clock divider to %d for fan %d\n",
FAN_DIV_FROM_REG(data->fan_status[i]),
i+1);
#endif
}
/* Clear bits and write new divider */
@@ -979,6 +991,8 @@ void pc87360_pwm(struct i2c_client *client, int operation, int ctl_name,
*nrels_mag = 2;
}
else if (operation == SENSORS_PROC_REAL_WRITE) {
if (nr >= data->fannr)
return;
if (*nrels_mag >= 1)
{
#ifdef DEBUG