From: Hans de Goede <hdegoede@redhat.com>
To: lm-sensors@vger.kernel.org
Subject: [lm-sensors] PATCH: f71882fg: cleanup fan and temp hyst functions
Date: Sun, 14 Dec 2008 14:33:48 +0000 [thread overview]
Message-ID: <4945194C.5030903@redhat.com> (raw)
[-- Attachment #1: Type: text/plain, Size: 238 bytes --]
Hi Jean,
As discussed during the review here is a separate version of the hyst cleanup
changes. This version makes the same changes in some other places of the driver
too for consistency throughout the driver.
Thanks & Regards,
Hans
[-- Attachment #2: hwmon-f71882fg-09-simplify-hyst-functions.patch --]
[-- Type: text/plain, Size: 6559 bytes --]
Simplify fan and temp hyst. handling by treating the registers as an array of
nibbles instead of using switch cases. Also unify the way hysts are handled
between temp and fans, the temp code was storing the actual per temp hyst
values in 4 u8's, where as the fan code was stroing actual register values.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
--- linux/drivers/hwmon/f71882fg.c.08-applied 2008-12-14 14:22:40.000000000 +0100
+++ linux/drivers/hwmon/f71882fg.c 2008-12-14 15:16:30.000000000 +0100
@@ -68,8 +68,7 @@
#define F71882FG_REG_TEMP_HIGH(nr) (0x81 + 2 * (nr))
#define F71882FG_REG_TEMP_STATUS 0x62
#define F71882FG_REG_TEMP_BEEP 0x63
-#define F71882FG_REG_TEMP_HYST1 0x6C
-#define F71882FG_REG_TEMP_HYST23 0x6D
+#define F71882FG_REG_TEMP_HYST(nr) (0x6C + (nr))
#define F71882FG_REG_TEMP_TYPE 0x6B
#define F71882FG_REG_TEMP_DIODE_OPEN 0x6F
@@ -77,8 +76,7 @@
#define F71882FG_REG_PWM_TYPE 0x94
#define F71882FG_REG_PWM_ENABLE 0x96
-#define F71882FG_REG_FAN_HYST0 0x98
-#define F71882FG_REG_FAN_HYST1 0x99
+#define F71882FG_REG_FAN_HYST(nr) (0x98 + (nr))
#define F71882FG_REG_POINT_PWM(pwm, point) (0xAA + (point) + (16 * (pwm)))
#define F71882FG_REG_POINT_TEMP(pwm, point) (0xA6 + (point) + (16 * (pwm)))
@@ -144,7 +142,7 @@
u8 temp[4];
u8 temp_ovt[4];
u8 temp_high[4];
- u8 temp_hyst[4];
+ u8 temp_hyst[2]; /* 2 hysts stored per reg */
u8 temp_type[4];
u8 temp_status;
u8 temp_beep;
@@ -688,13 +686,11 @@
F71882FG_REG_TEMP_HIGH(nr));
}
- /* Have to hardcode hyst*/
- data->temp_hyst[1] = f71882fg_read8(data,
- F71882FG_REG_TEMP_HYST1) >> 4;
- /* Hyst temps 2 & 3 stored in same register */
- reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
- data->temp_hyst[2] = reg & 0x0F;
- data->temp_hyst[3] = reg >> 4;
+ /* hyst */
+ data->temp_hyst[0] =
+ f71882fg_read8(data, F71882FG_REG_TEMP_HYST(0));
+ data->temp_hyst[1] =
+ f71882fg_read8(data, F71882FG_REG_TEMP_HYST(1));
/* Have to hardcode type, because temp1 is special */
reg = f71882fg_read8(data, F71882FG_REG_TEMP_TYPE);
@@ -715,10 +711,11 @@
data->pwm_enable = f71882fg_read8(data,
F71882FG_REG_PWM_ENABLE);
- data->pwm_auto_point_hyst[0] = f71882fg_read8(data,
- F71882FG_REG_FAN_HYST0);
- data->pwm_auto_point_hyst[1] = f71882fg_read8(data,
- F71882FG_REG_FAN_HYST1);
+ data->pwm_auto_point_hyst[0] =
+ f71882fg_read8(data, F71882FG_REG_FAN_HYST(0));
+ data->pwm_auto_point_hyst[1] =
+ f71882fg_read8(data, F71882FG_REG_FAN_HYST(1));
+
for (nr = 0; nr < nr_fans; nr++) {
data->pwm_auto_point_mapping[nr] =
f71882fg_read8(data,
@@ -1011,7 +1008,11 @@
int temp_max_hyst;
mutex_lock(&data->update_lock);
- temp_max_hyst = (data->temp_high[nr] - data->temp_hyst[nr]) * 1000;
+ if (nr & 1)
+ temp_max_hyst = data->temp_hyst[nr / 2] >> 4;
+ else
+ temp_max_hyst = data->temp_hyst[nr / 2] & 0x0f;
+ temp_max_hyst = (data->temp_high[nr] - temp_max_hyst) * 1000;
mutex_unlock(&data->update_lock);
return sprintf(buf, "%d\n", temp_max_hyst);
@@ -1033,26 +1034,15 @@
val = SENSORS_LIMIT(val, data->temp_high[nr] - 15,
data->temp_high[nr]);
val = data->temp_high[nr] - val;
- data->temp_hyst[nr] = val;
/* convert value to register contents */
- switch (nr) {
- case 1:
- reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST1);
- reg = (reg & 0x0f) | (val << 4);
- break;
- case 2:
- reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
- reg = (reg & 0xf0) | val;
- break;
- case 3:
- reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST23);
- reg = (reg & 0x0f) | (val << 4);
- break;
- }
-
- f71882fg_write8(data, (nr <= 1) ? F71882FG_REG_TEMP_HYST1 :
- F71882FG_REG_TEMP_HYST23, reg);
+ reg = f71882fg_read8(data, F71882FG_REG_TEMP_HYST(nr / 2));
+ if (nr & 1)
+ reg = (reg & 0x0f) | (val << 4);
+ else
+ reg = (reg & 0xf0) | val;
+ f71882fg_write8(data, F71882FG_REG_TEMP_HYST(nr / 2), reg);
+ data->temp_hyst[nr / 2] = reg;
mutex_unlock(&data->update_lock);
return ret;
@@ -1091,7 +1081,11 @@
int temp_crit_hyst;
mutex_lock(&data->update_lock);
- temp_crit_hyst = (data->temp_ovt[nr] - data->temp_hyst[nr]) * 1000;
+ if (nr & 1)
+ temp_crit_hyst = data->temp_hyst[nr / 2] >> 4;
+ else
+ temp_crit_hyst = data->temp_hyst[nr / 2] & 0x0f;
+ temp_crit_hyst = (data->temp_ovt[nr] - temp_crit_hyst) * 1000;
mutex_unlock(&data->update_lock);
return sprintf(buf, "%d\n", temp_crit_hyst);
@@ -1320,20 +1314,10 @@
int point = to_sensor_dev_attr_2(devattr)->nr;
mutex_lock(&data->update_lock);
- switch (nr) {
- case 0:
- result = data->pwm_auto_point_hyst[0] & 0x0f;
- break;
- case 1:
- result = data->pwm_auto_point_hyst[0] >> 4;
- break;
- case 2:
- result = data->pwm_auto_point_hyst[1] & 0x0f;
- break;
- case 3:
- result = data->pwm_auto_point_hyst[1] >> 4;
- break;
- }
+ if (nr & 1)
+ result = data->pwm_auto_point_hyst[nr / 2] >> 4;
+ else
+ result = data->pwm_auto_point_hyst[nr / 2] & 0x0f;
result = 1000 * (data->pwm_auto_point_temp[nr][point] - result);
mutex_unlock(&data->update_lock);
@@ -1348,6 +1332,7 @@
int nr = to_sensor_dev_attr_2(devattr)->index;
int point = to_sensor_dev_attr_2(devattr)->nr;
long val = simple_strtol(buf, NULL, 10) / 1000;
+ u8 reg;
mutex_lock(&data->update_lock);
data->pwm_auto_point_temp[nr][point] =
@@ -1356,34 +1341,14 @@
data->pwm_auto_point_temp[nr][point]);
val = data->pwm_auto_point_temp[nr][point] - val;
- if (nr == 0 || nr == 1) {
- data->pwm_auto_point_hyst[0] =
- f71882fg_read8(data, F71882FG_REG_FAN_HYST0, val);
- } else {
- data->pwm_auto_point_hyst[1] =
- f71882fg_read8(data, F71882FG_REG_FAN_HYST1, val);
- }
- switch (nr) {
- case 0:
- val = (data->pwm_auto_point_hyst[0] & 0xf0) | val;
- break;
- case 1:
- val = (data->pwm_auto_point_hyst[0] & 0x0f) | (val << 4);
- break;
- case 2:
- val = (data->pwm_auto_point_hyst[1] & 0xf0) | val;
- break;
- case 3:
- val = (data->pwm_auto_point_hyst[1] & 0x0f) | (val << 4);
- break;
- }
- if (nr == 0 || nr == 1) {
- f71882fg_write8(data, F71882FG_REG_FAN_HYST0, val);
- data->pwm_auto_point_hyst[0] = val;
- } else {
- f71882fg_write8(data, F71882FG_REG_FAN_HYST1, val);
- data->pwm_auto_point_hyst[1] = val;
- }
+ reg = f71882fg_read8(data, F71882FG_REG_FAN_HYST(nr / 2));
+ if (nr & 1)
+ reg = (reg & 0x0f) | (val << 4);
+ else
+ reg = (reg & 0xf0) | val;
+
+ f71882fg_write8(data, F71882FG_REG_FAN_HYST(nr / 2), reg);
+ data->pwm_auto_point_hyst[nr / 2] = reg;
mutex_unlock(&data->update_lock);
return count;
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