diff mbox series

[18/40] hwmon: (lm90) Add flag to indicate 'alarms' attribute support

Message ID 20220525135758.2944744-19-linux@roeck-us.net (mailing list archive)
State Accepted
Headers show
Series hwmon: (lm90) Various improvements to lm90 driver | expand

Commit Message

Guenter Roeck May 25, 2022, 1:57 p.m. UTC 
We don't want to support the obsolete 'alarms' attribute for new
chips supported by this driver. Add flag to indicate 'alarms' attribute
support and use it for existing chips. This flag will not be set for
additional chips supported by this driver in the future.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 drivers/hwmon/lm90.c | 57 +++++++++++++++++++++++++++++---------------
 1 file changed, 38 insertions(+), 19 deletions(-)
diff mbox series

Patch

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index b39e31ded2cb..e23dcf299b03 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -178,6 +178,7 @@  enum chips { adm1032, adt7461, adt7461a, g781, lm86, lm90, lm99,
 #define LM90_HAVE_CRIT_ALRM_SWP	BIT(10)	/* critical alarm bits swapped	*/
 #define LM90_HAVE_PEC		BIT(11)	/* Chip supports PEC		*/
 #define LM90_HAVE_PARTIAL_PEC	BIT(12)	/* Partial PEC support (adm1032)*/
+#define LM90_HAVE_ALARMS	BIT(13)	/* Create 'alarms' attribute	*/
 
 /* LM90 status */
 #define LM90_STATUS_LTHRM	BIT(0)	/* local THERM limit tripped */
@@ -347,7 +348,7 @@  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_PARTIAL_PEC | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 10,
 	},
@@ -359,7 +360,8 @@  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_CRIT | LM90_HAVE_PARTIAL_PEC
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 10,
 		.resolution = 10,
@@ -367,55 +369,58 @@  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_CRIT | LM90_HAVE_PEC | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 10,
 	},
 	[g781] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-		  | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT,
+		  | LM90_HAVE_BROKEN_ALERT | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 7,
 	},
 	[lm86] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-		  | LM90_HAVE_CRIT,
+		  | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7b,
 		.max_convrate = 9,
 	},
 	[lm90] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-		  | LM90_HAVE_CRIT,
+		  | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7b,
 		.max_convrate = 9,
 	},
 	[lm99] = {
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT
-		  | LM90_HAVE_CRIT,
+		  | LM90_HAVE_CRIT | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7b,
 		.max_convrate = 9,
 	},
 	[max6646] = {
 		.flags = LM90_HAVE_CRIT | LM90_HAVE_BROKEN_ALERT
-		  | LM90_HAVE_UNSIGNED_TEMP,
+		  | LM90_HAVE_UNSIGNED_TEMP | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 6,
 		.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
 	},
 	[max6654] = {
-		.flags = LM90_HAVE_BROKEN_ALERT,
+		.flags = LM90_HAVE_BROKEN_ALERT | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 7,
 		.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
 	},
 	[max6657] = {
-		.flags = LM90_PAUSE_FOR_CONFIG | LM90_HAVE_CRIT,
+		.flags = LM90_PAUSE_FOR_CONFIG | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 8,
 		.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
 	},
 	[max6659] = {
-		.flags = LM90_HAVE_EMERGENCY | LM90_HAVE_CRIT,
+		.flags = LM90_HAVE_EMERGENCY | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 8,
 		.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
@@ -427,19 +432,22 @@  static const struct lm90_params lm90_params[] = {
 		 * be set).
 		 */
 		.flags = LM90_HAVE_OFFSET | LM90_HAVE_CRIT
-		  | LM90_HAVE_CRIT_ALRM_SWP | LM90_HAVE_BROKEN_ALERT,
+		  | LM90_HAVE_CRIT_ALRM_SWP | LM90_HAVE_BROKEN_ALERT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 7,
 	},
 	[max6696] = {
 		.flags = LM90_HAVE_EMERGENCY
-		  | LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3 | LM90_HAVE_CRIT,
+		  | LM90_HAVE_EMERGENCY_ALARM | LM90_HAVE_TEMP3 | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x1c7c,
 		.max_convrate = 6,
 		.reg_local_ext = MAX6657_REG_LOCAL_TEMPL,
 	},
 	[w83l771] = {
-		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT,
+		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 8,
 	},
@@ -449,7 +457,8 @@  static const struct lm90_params lm90_params[] = {
 		 * and treated as negative temperatures (meaning min_alarm will
 		 * be set).
 		 */
-		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT,
+		.flags = LM90_HAVE_OFFSET | LM90_HAVE_REM_LIMIT_EXT | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7b,
 		.max_convrate = 9,
 		.reg_local_ext = SA56004_REG_LOCAL_TEMPL,
@@ -457,7 +466,7 @@  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_UNSIGNED_TEMP | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 9,
 		.resolution = 12,
@@ -465,7 +474,8 @@  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_BROKEN_ALERT | LM90_HAVE_EXTENDED_TEMP | LM90_HAVE_CRIT
+		  | LM90_HAVE_ALARMS,
 		.alert_alarms = 0x7c,
 		.max_convrate = 9,
 		.resolution = 12,
@@ -505,7 +515,9 @@  enum lm90_temp_reg_index {
 struct lm90_data {
 	struct i2c_client *client;
 	struct device *hwmon_dev;
+	u32 chip_config[2];
 	u32 channel_config[4];
+	struct hwmon_channel_info chip_info;
 	struct hwmon_channel_info temp_info;
 	const struct hwmon_channel_info *info[3];
 	struct hwmon_chip_info chip;
@@ -2028,8 +2040,15 @@  static int lm90_probe(struct i2c_client *client)
 	data->chip.ops = &lm90_ops;
 	data->chip.info = data->info;
 
-	data->info[0] = HWMON_CHANNEL_INFO(chip,
-		HWMON_C_REGISTER_TZ | HWMON_C_UPDATE_INTERVAL | HWMON_C_ALARMS);
+	data->info[0] = &data->chip_info;
+	info = &data->chip_info;
+	info->type = hwmon_chip;
+	info->config = data->chip_config;
+
+	data->chip_config[0] = HWMON_C_REGISTER_TZ | HWMON_C_UPDATE_INTERVAL;
+	if (data->flags & LM90_HAVE_ALARMS)
+		data->chip_config[0] |= HWMON_C_ALARMS;
+
 	data->info[1] = &data->temp_info;
 
 	info = &data->temp_info;