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authorJean Delvare <khali@linux-fr.org>2006-02-05 23:13:48 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2006-02-13 22:30:09 -0800
commitc7f5d7edd8b3fa4204389efc4c9081cc90a811d2 (patch)
tree1264bb18887b398ea2dccbba03ade05bf9fe9539 /drivers/hwmon
parente3efa5a7392e07471b5d0ef7e7cd7ab862f70284 (diff)
downloadlinux-stericsson-c7f5d7edd8b3fa4204389efc4c9081cc90a811d2.tar.gz
[PATCH] w83781d: Use real-time status registers
Use the real-time status registers of the Winbond W83782D, W83783S and W83627HF chips, instead of the interrupt status registers. Interrupts cannot be trusted at least for voltage inputs, as they are two-times triggers (as opposed to comparator mode, which we want.) The w83627hf driver was fixed in a similar way some times ago. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/hwmon')
-rw-r--r--drivers/hwmon/w83781d.c43
1 files changed, 25 insertions, 18 deletions
diff --git a/drivers/hwmon/w83781d.c b/drivers/hwmon/w83781d.c
index 557114872f3c..64c1f8af5bb2 100644
--- a/drivers/hwmon/w83781d.c
+++ b/drivers/hwmon/w83781d.c
@@ -95,11 +95,16 @@ MODULE_PARM_DESC(init, "Set to zero to bypass chip initialization");
(0x39)))
#define W83781D_REG_CONFIG 0x40
+
+/* Interrupt status (W83781D, AS99127F) */
#define W83781D_REG_ALARM1 0x41
#define W83781D_REG_ALARM2 0x42
-#define W83781D_REG_ALARM3 0x450 /* not on W83781D */
-#define W83781D_REG_IRQ 0x4C
+/* Real-time status (W83782D, W83783S, W83627HF) */
+#define W83782D_REG_ALARM1 0x459
+#define W83782D_REG_ALARM2 0x45A
+#define W83782D_REG_ALARM3 0x45B
+
#define W83781D_REG_BEEP_CONFIG 0x4D
#define W83781D_REG_BEEP_INTS1 0x56
#define W83781D_REG_BEEP_INTS2 0x57
@@ -1513,15 +1518,6 @@ w83781d_init_client(struct i2c_client *client)
W83781D_REG_TEMP3_CONFIG, tmp & 0xfe);
}
}
-
- if (type != w83781d) {
- /* enable comparator mode for temp2 and temp3 so
- alarm indication will work correctly */
- i = w83781d_read_value(client, W83781D_REG_IRQ);
- if (!(i & 0x40))
- w83781d_write_value(client, W83781D_REG_IRQ,
- i | 0x40);
- }
}
/* Start monitoring */
@@ -1612,14 +1608,25 @@ static struct w83781d_data *w83781d_update_device(struct device *dev)
data->fan_div[1] |= (i >> 4) & 0x04;
data->fan_div[2] |= (i >> 5) & 0x04;
}
- data->alarms =
- w83781d_read_value(client,
- W83781D_REG_ALARM1) +
- (w83781d_read_value(client, W83781D_REG_ALARM2) << 8);
if ((data->type == w83782d) || (data->type == w83627hf)) {
- data->alarms |=
- w83781d_read_value(client,
- W83781D_REG_ALARM3) << 16;
+ data->alarms = w83781d_read_value(client,
+ W83782D_REG_ALARM1)
+ | (w83781d_read_value(client,
+ W83782D_REG_ALARM2) << 8)
+ | (w83781d_read_value(client,
+ W83782D_REG_ALARM3) << 16);
+ } else if (data->type == w83783s) {
+ data->alarms = w83781d_read_value(client,
+ W83782D_REG_ALARM1)
+ | (w83781d_read_value(client,
+ W83782D_REG_ALARM2) << 8);
+ } else {
+ /* No real-time status registers, fall back to
+ interrupt status registers */
+ data->alarms = w83781d_read_value(client,
+ W83781D_REG_ALARM1)
+ | (w83781d_read_value(client,
+ W83781D_REG_ALARM2) << 8);
}
i = w83781d_read_value(client, W83781D_REG_BEEP_INTS2);
data->beep_enable = i >> 7;