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Date: Wed, 25 May 2022 06:57:41 -0700
From: Guenter Roeck <linux@...ck-us.net>
To: linux-hwmon@...r.kernel.org
Cc: linux-kernel@...r.kernel.org, Jean Delvare <jdelvare@...e.com>,
Slawomir Stepien <sst@...zta.fm>,
Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 23/40] hwmon: (lm90) Add flag to indicate support for minimum temperature limits
A flag indicating support for minimum temperature limits doesn't cost much
and will enable us to add support for MAX6642 to the lm90 driver.
Signed-off-by: Guenter Roeck <linux@...ck-us.net>
---
drivers/hwmon/lm90.c | 54 +++++++++++++++++++++++++-------------------
1 file changed, 31 insertions(+), 23 deletions(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 22ea75535ab4..abf1451c5652 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -192,6 +192,7 @@ enum chips { adm1032, adt7461, adt7461a, adt7481, g781, lm86, lm90, lm99,
#define LM90_HAVE_PARTIAL_PEC BIT(12) /* Partial PEC support (adm1032)*/
#define LM90_HAVE_ALARMS BIT(13) /* Create 'alarms' attribute */
#define LM90_HAVE_EXT_UNSIGNED BIT(14) /* extended unsigned temperature*/
+#define LM90_HAVE_LOW BIT(15) /* low limits */
/* LM90 status */
#define LM90_STATUS_LTHRM BIT(0) /* local THERM limit tripped */
@@ -369,7 +370,8 @@ static const struct lm90_params lm90_params[] = {
[adm1032] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT
- | LM90_HAVE_PARTIAL_PEC | LM90_HAVE_ALARMS,
+ | LM90_HAVE_PARTIAL_PEC | LM90_HAVE_ALARMS
+ | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 10,
},
@@ -382,7 +384,7 @@ static const struct lm90_params lm90_params[] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP
| LM90_HAVE_CRIT | LM90_HAVE_PARTIAL_PEC
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 10,
.resolution = 10,
@@ -390,7 +392,8 @@ static const struct lm90_params lm90_params[] = {
[adt7461a] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP
- | LM90_HAVE_CRIT | LM90_HAVE_PEC | LM90_HAVE_ALARMS,
+ | LM90_HAVE_CRIT | LM90_HAVE_PEC | LM90_HAVE_ALARMS
+ | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 10,
},
@@ -398,7 +401,7 @@ static const struct lm90_params lm90_params[] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP
| LM90_HAVE_UNSIGNED_TEMP | LM90_HAVE_PEC
- | LM90_HAVE_TEMP3 | LM90_HAVE_CRIT,
+ | LM90_HAVE_TEMP3 | LM90_HAVE_CRIT | LM90_HAVE_LOW,
.alert_alarms = 0x1c7c,
.max_convrate = 11,
.resolution = 10,
@@ -407,58 +410,58 @@ static const struct lm90_params lm90_params[] = {
[g781] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 7,
},
[lm86] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
- | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
+ | LM90_HAVE_CRIT | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7b,
.max_convrate = 9,
},
[lm90] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
- | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
+ | LM90_HAVE_CRIT | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7b,
.max_convrate = 9,
},
[lm99] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
- | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
+ | LM90_HAVE_CRIT | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7b,
.max_convrate = 9,
},
[max6646] = {
.flags = LM90_HAVE_CRIT | LM90_HAVE_BROKEN_ALERT
- | LM90_HAVE_EXT_UNSIGNED | LM90_HAVE_ALARMS,
+ | LM90_HAVE_EXT_UNSIGNED | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 6,
.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
},
[max6648] = {
.flags = LM90_HAVE_UNSIGNED_TEMP | LM90_HAVE_CRIT
- | LM90_HAVE_BROKEN_ALERT,
+ | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 6,
.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
},
[max6654] = {
- .flags = LM90_HAVE_BROKEN_ALERT | LM90_HAVE_ALARMS,
+ .flags = LM90_HAVE_BROKEN_ALERT | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 7,
.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
},
[max6657] = {
.flags = LM90_PAUSE_FOR_CONFIG | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 8,
.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
},
[max6659] = {
.flags = LM90_HAVE_EMERGENCY | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 8,
.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
@@ -471,14 +474,14 @@ static const struct lm90_params lm90_params[] = {
*/
.flags = LM90_HAVE_OFFSET | LM90_HAVE_CRIT
| LM90_HAVE_CRIT_ALRM_SWP | LM90_HAVE_BROKEN_ALERT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 7,
},
[max6696] = {
.flags = LM90_HAVE_EMERGENCY
| LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3 | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x1c7c,
.max_convrate = 6,
.reg_status2 = MAX6696_REG_STATUS2,
@@ -486,7 +489,7 @@ static const struct lm90_params lm90_params[] = {
},
[w83l771] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 8,
},
@@ -497,7 +500,7 @@ static const struct lm90_params lm90_params[] = {
* be set).
*/
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7b,
.max_convrate = 9,
.reg_local_ext = SA56004_REG_LOCAL_TEMPL,
@@ -505,7 +508,7 @@ static const struct lm90_params lm90_params[] = {
[tmp451] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP | LM90_HAVE_CRIT
- | LM90_HAVE_UNSIGNED_TEMP | LM90_HAVE_ALARMS,
+ | LM90_HAVE_UNSIGNED_TEMP | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 9,
.resolution = 12,
@@ -514,7 +517,7 @@ static const struct lm90_params lm90_params[] = {
[tmp461] = {
.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
| LM90_HAVE_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP | LM90_HAVE_CRIT
- | LM90_HAVE_ALARMS,
+ | LM90_HAVE_ALARMS | LM90_HAVE_LOW,
.alert_alarms = 0x7c,
.max_convrate = 9,
.resolution = 12,
@@ -2161,10 +2164,15 @@ static int lm90_probe(struct i2c_client *client)
info->type = hwmon_temp;
info->config = data->channel_config;
- data->channel_config[0] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
- HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM;
- data->channel_config[1] = HWMON_T_INPUT | HWMON_T_MIN | HWMON_T_MAX |
- HWMON_T_MIN_ALARM | HWMON_T_MAX_ALARM | HWMON_T_FAULT;
+ data->channel_config[0] = HWMON_T_INPUT | HWMON_T_MAX |
+ HWMON_T_MAX_ALARM;
+ data->channel_config[1] = HWMON_T_INPUT | HWMON_T_MAX |
+ HWMON_T_MAX_ALARM | HWMON_T_FAULT;
+
+ if (data->flags & LM90_HAVE_LOW) {
+ data->channel_config[0] |= HWMON_T_MIN | HWMON_T_MIN_ALARM;
+ data->channel_config[1] |= HWMON_T_MIN | HWMON_T_MIN_ALARM;
+ }
if (data->flags & LM90_HAVE_CRIT) {
data->channel_config[0] |= HWMON_T_CRIT | HWMON_T_CRIT_ALARM | HWMON_T_CRIT_HYST;
--
2.35.1
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