diff mbox series

[3/3] hwmon: (occ) Add new temperature sensor type

Message ID 20200501150833.5251-4-eajames@linux.ibm.com
State Superseded
Headers show
Series occ: Add support for P10 | expand

Commit Message

Eddie James May 1, 2020, 3:08 p.m. UTC
The latest version of the On-Chip Controller (OCC) has a different
format for the temperature sensor data. Add a new temperature sensor
version to handle this data.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
 drivers/hwmon/occ/common.c | 75 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

Comments

Guenter Roeck May 6, 2020, 3:57 p.m. UTC | #1
On Fri, May 01, 2020 at 10:08:33AM -0500, Eddie James wrote:
> The latest version of the On-Chip Controller (OCC) has a different
> format for the temperature sensor data. Add a new temperature sensor
> version to handle this data.
> 
> Signed-off-by: Eddie James <eajames@linux.ibm.com>

For my reference:

Acked-by: Guenter Roeck <linux@roeck-us.net>

I assume this depends on at least patch 2 of the series, so we'll have
to wait for that to be accepted.

Guenter

> ---
>  drivers/hwmon/occ/common.c | 75 ++++++++++++++++++++++++++++++++++++++
>  1 file changed, 75 insertions(+)
> 
> diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
> index 30e18eb60da7..52af0e728232 100644
> --- a/drivers/hwmon/occ/common.c
> +++ b/drivers/hwmon/occ/common.c
> @@ -41,6 +41,14 @@ struct temp_sensor_2 {
>  	u8 value;
>  } __packed;
>  
> +struct temp_sensor_10 {
> +	u32 sensor_id;
> +	u8 fru_type;
> +	u8 value;
> +	u8 throttle;
> +	u8 reserved;
> +} __packed;
> +
>  struct freq_sensor_1 {
>  	u16 sensor_id;
>  	u16 value;
> @@ -307,6 +315,60 @@ static ssize_t occ_show_temp_2(struct device *dev,
>  	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
>  }
>  
> +static ssize_t occ_show_temp_10(struct device *dev,
> +				struct device_attribute *attr, char *buf)
> +{
> +	int rc;
> +	u32 val = 0;
> +	struct temp_sensor_10 *temp;
> +	struct occ *occ = dev_get_drvdata(dev);
> +	struct occ_sensors *sensors = &occ->sensors;
> +	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
> +
> +	rc = occ_update_response(occ);
> +	if (rc)
> +		return rc;
> +
> +	temp = ((struct temp_sensor_10 *)sensors->temp.data) + sattr->index;
> +
> +	switch (sattr->nr) {
> +	case 0:
> +		val = get_unaligned_be32(&temp->sensor_id);
> +		break;
> +	case 1:
> +		val = temp->value;
> +		if (val == OCC_TEMP_SENSOR_FAULT)
> +			return -EREMOTEIO;
> +
> +		/*
> +		 * VRM doesn't return temperature, only alarm bit. This
> +		 * attribute maps to tempX_alarm instead of tempX_input for
> +		 * VRM
> +		 */
> +		if (temp->fru_type != OCC_FRU_TYPE_VRM) {
> +			/* sensor not ready */
> +			if (val == 0)
> +				return -EAGAIN;
> +
> +			val *= 1000;
> +		}
> +		break;
> +	case 2:
> +		val = temp->fru_type;
> +		break;
> +	case 3:
> +		val = temp->value == OCC_TEMP_SENSOR_FAULT;
> +		break;
> +	case 4:
> +		val = temp->throttle * 1000;
> +		break;
> +	default:
> +		return -EINVAL;
> +	}
> +
> +	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
> +}
> +
>  static ssize_t occ_show_freq_1(struct device *dev,
>  			       struct device_attribute *attr, char *buf)
>  {
> @@ -745,6 +807,10 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>  		num_attrs += (sensors->temp.num_sensors * 4);
>  		show_temp = occ_show_temp_2;
>  		break;
> +	case 0x10:
> +		num_attrs += (sensors->temp.num_sensors * 5);
> +		show_temp = occ_show_temp_10;
> +		break;
>  	default:
>  		sensors->temp.num_sensors = 0;
>  	}
> @@ -844,6 +910,15 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>  			attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
>  						     show_temp, NULL, 3, i);
>  			attr++;
> +
> +			if (sensors->temp.version == 0x10) {
> +				snprintf(attr->name, sizeof(attr->name),
> +					 "temp%d_max", s);
> +				attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
> +							     show_temp, NULL,
> +							     4, i);
> +				attr++;
> +			}
>  		}
>  	}
>
Eddie James May 6, 2020, 3:58 p.m. UTC | #2
On 5/6/20 10:57 AM, Guenter Roeck wrote:
> On Fri, May 01, 2020 at 10:08:33AM -0500, Eddie James wrote:
>> The latest version of the On-Chip Controller (OCC) has a different
>> format for the temperature sensor data. Add a new temperature sensor
>> version to handle this data.
>>
>> Signed-off-by: Eddie James <eajames@linux.ibm.com>
> For my reference:
>
> Acked-by: Guenter Roeck <linux@roeck-us.net>
>
> I assume this depends on at least patch 2 of the series, so we'll have
> to wait for that to be accepted.


Thanks Guenter. Yes that's correct.

Eddie


>
> Guenter
>
>> ---
>>   drivers/hwmon/occ/common.c | 75 ++++++++++++++++++++++++++++++++++++++
>>   1 file changed, 75 insertions(+)
>>
>> diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
>> index 30e18eb60da7..52af0e728232 100644
>> --- a/drivers/hwmon/occ/common.c
>> +++ b/drivers/hwmon/occ/common.c
>> @@ -41,6 +41,14 @@ struct temp_sensor_2 {
>>   	u8 value;
>>   } __packed;
>>   
>> +struct temp_sensor_10 {
>> +	u32 sensor_id;
>> +	u8 fru_type;
>> +	u8 value;
>> +	u8 throttle;
>> +	u8 reserved;
>> +} __packed;
>> +
>>   struct freq_sensor_1 {
>>   	u16 sensor_id;
>>   	u16 value;
>> @@ -307,6 +315,60 @@ static ssize_t occ_show_temp_2(struct device *dev,
>>   	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
>>   }
>>   
>> +static ssize_t occ_show_temp_10(struct device *dev,
>> +				struct device_attribute *attr, char *buf)
>> +{
>> +	int rc;
>> +	u32 val = 0;
>> +	struct temp_sensor_10 *temp;
>> +	struct occ *occ = dev_get_drvdata(dev);
>> +	struct occ_sensors *sensors = &occ->sensors;
>> +	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
>> +
>> +	rc = occ_update_response(occ);
>> +	if (rc)
>> +		return rc;
>> +
>> +	temp = ((struct temp_sensor_10 *)sensors->temp.data) + sattr->index;
>> +
>> +	switch (sattr->nr) {
>> +	case 0:
>> +		val = get_unaligned_be32(&temp->sensor_id);
>> +		break;
>> +	case 1:
>> +		val = temp->value;
>> +		if (val == OCC_TEMP_SENSOR_FAULT)
>> +			return -EREMOTEIO;
>> +
>> +		/*
>> +		 * VRM doesn't return temperature, only alarm bit. This
>> +		 * attribute maps to tempX_alarm instead of tempX_input for
>> +		 * VRM
>> +		 */
>> +		if (temp->fru_type != OCC_FRU_TYPE_VRM) {
>> +			/* sensor not ready */
>> +			if (val == 0)
>> +				return -EAGAIN;
>> +
>> +			val *= 1000;
>> +		}
>> +		break;
>> +	case 2:
>> +		val = temp->fru_type;
>> +		break;
>> +	case 3:
>> +		val = temp->value == OCC_TEMP_SENSOR_FAULT;
>> +		break;
>> +	case 4:
>> +		val = temp->throttle * 1000;
>> +		break;
>> +	default:
>> +		return -EINVAL;
>> +	}
>> +
>> +	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
>> +}
>> +
>>   static ssize_t occ_show_freq_1(struct device *dev,
>>   			       struct device_attribute *attr, char *buf)
>>   {
>> @@ -745,6 +807,10 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>>   		num_attrs += (sensors->temp.num_sensors * 4);
>>   		show_temp = occ_show_temp_2;
>>   		break;
>> +	case 0x10:
>> +		num_attrs += (sensors->temp.num_sensors * 5);
>> +		show_temp = occ_show_temp_10;
>> +		break;
>>   	default:
>>   		sensors->temp.num_sensors = 0;
>>   	}
>> @@ -844,6 +910,15 @@ static int occ_setup_sensor_attrs(struct occ *occ)
>>   			attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
>>   						     show_temp, NULL, 3, i);
>>   			attr++;
>> +
>> +			if (sensors->temp.version == 0x10) {
>> +				snprintf(attr->name, sizeof(attr->name),
>> +					 "temp%d_max", s);
>> +				attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
>> +							     show_temp, NULL,
>> +							     4, i);
>> +				attr++;
>> +			}
>>   		}
>>   	}
>>
diff mbox series

Patch

diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index 30e18eb60da7..52af0e728232 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -41,6 +41,14 @@  struct temp_sensor_2 {
 	u8 value;
 } __packed;
 
+struct temp_sensor_10 {
+	u32 sensor_id;
+	u8 fru_type;
+	u8 value;
+	u8 throttle;
+	u8 reserved;
+} __packed;
+
 struct freq_sensor_1 {
 	u16 sensor_id;
 	u16 value;
@@ -307,6 +315,60 @@  static ssize_t occ_show_temp_2(struct device *dev,
 	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
 }
 
+static ssize_t occ_show_temp_10(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	int rc;
+	u32 val = 0;
+	struct temp_sensor_10 *temp;
+	struct occ *occ = dev_get_drvdata(dev);
+	struct occ_sensors *sensors = &occ->sensors;
+	struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr);
+
+	rc = occ_update_response(occ);
+	if (rc)
+		return rc;
+
+	temp = ((struct temp_sensor_10 *)sensors->temp.data) + sattr->index;
+
+	switch (sattr->nr) {
+	case 0:
+		val = get_unaligned_be32(&temp->sensor_id);
+		break;
+	case 1:
+		val = temp->value;
+		if (val == OCC_TEMP_SENSOR_FAULT)
+			return -EREMOTEIO;
+
+		/*
+		 * VRM doesn't return temperature, only alarm bit. This
+		 * attribute maps to tempX_alarm instead of tempX_input for
+		 * VRM
+		 */
+		if (temp->fru_type != OCC_FRU_TYPE_VRM) {
+			/* sensor not ready */
+			if (val == 0)
+				return -EAGAIN;
+
+			val *= 1000;
+		}
+		break;
+	case 2:
+		val = temp->fru_type;
+		break;
+	case 3:
+		val = temp->value == OCC_TEMP_SENSOR_FAULT;
+		break;
+	case 4:
+		val = temp->throttle * 1000;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return snprintf(buf, PAGE_SIZE - 1, "%u\n", val);
+}
+
 static ssize_t occ_show_freq_1(struct device *dev,
 			       struct device_attribute *attr, char *buf)
 {
@@ -745,6 +807,10 @@  static int occ_setup_sensor_attrs(struct occ *occ)
 		num_attrs += (sensors->temp.num_sensors * 4);
 		show_temp = occ_show_temp_2;
 		break;
+	case 0x10:
+		num_attrs += (sensors->temp.num_sensors * 5);
+		show_temp = occ_show_temp_10;
+		break;
 	default:
 		sensors->temp.num_sensors = 0;
 	}
@@ -844,6 +910,15 @@  static int occ_setup_sensor_attrs(struct occ *occ)
 			attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
 						     show_temp, NULL, 3, i);
 			attr++;
+
+			if (sensors->temp.version == 0x10) {
+				snprintf(attr->name, sizeof(attr->name),
+					 "temp%d_max", s);
+				attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
+							     show_temp, NULL,
+							     4, i);
+				attr++;
+			}
 		}
 	}