From: Eddie James <eajames@linux.ibm.com>
To: openbmc@lists.ozlabs.org
Cc: baileysh@us.ibm.com, Eddie James <eajames@linux.ibm.com>,
cjcain@us.ibm.com
Subject: [PATCH linux dev-5.15 3/4] hwmon: (occ) Add sysfs entries for additional extended status bits
Date: Mon, 14 Feb 2022 17:00:52 -0600 [thread overview]
Message-ID: <20220214230053.38449-4-eajames@linux.ibm.com> (raw)
In-Reply-To: <20220214230053.38449-1-eajames@linux.ibm.com>
Add sysfs entries for DVFS due to a VRM Vdd over-temperature condition,
and add the GPU throttling condition bits (such that if bit 1 is set,
GPU1 is throttling).
Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/hwmon/occ/sysfs.c | 24 ++++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/hwmon/occ/sysfs.c b/drivers/hwmon/occ/sysfs.c
index 88f655887c95..b2f788a77746 100644
--- a/drivers/hwmon/occ/sysfs.c
+++ b/drivers/hwmon/occ/sysfs.c
@@ -19,6 +19,8 @@
#define OCC_EXT_STAT_DVFS_POWER BIT(6)
#define OCC_EXT_STAT_MEM_THROTTLE BIT(5)
#define OCC_EXT_STAT_QUICK_DROP BIT(4)
+#define OCC_EXT_STAT_DVFS_VDD BIT(3)
+#define OCC_EXT_STAT_GPU_THROTTLE GENMASK(2, 0)
static ssize_t occ_sysfs_show(struct device *dev,
struct device_attribute *attr, char *buf)
@@ -69,6 +71,12 @@ static ssize_t occ_sysfs_show(struct device *dev,
case 9:
val = header->mode;
break;
+ case 10:
+ val = !!(header->ext_status & OCC_EXT_STAT_DVFS_VDD);
+ break;
+ case 11:
+ val = header->ext_status & OCC_EXT_STAT_GPU_THROTTLE;
+ break;
default:
return -EINVAL;
}
@@ -96,6 +104,8 @@ static SENSOR_DEVICE_ATTR(occ_state, 0444, occ_sysfs_show, NULL, 6);
static SENSOR_DEVICE_ATTR(occs_present, 0444, occ_sysfs_show, NULL, 7);
static SENSOR_DEVICE_ATTR(occ_ips_status, 0444, occ_sysfs_show, NULL, 8);
static SENSOR_DEVICE_ATTR(occ_mode, 0444, occ_sysfs_show, NULL, 9);
+static SENSOR_DEVICE_ATTR(occ_dvfs_vdd, 0444, occ_sysfs_show, NULL, 10);
+static SENSOR_DEVICE_ATTR(occ_gpu_throttle, 0444, occ_sysfs_show, NULL, 11);
static DEVICE_ATTR_RO(occ_error);
static struct attribute *occ_attributes[] = {
@@ -109,6 +119,8 @@ static struct attribute *occ_attributes[] = {
&sensor_dev_attr_occs_present.dev_attr.attr,
&sensor_dev_attr_occ_ips_status.dev_attr.attr,
&sensor_dev_attr_occ_mode.dev_attr.attr,
+ &sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr,
+ &sensor_dev_attr_occ_gpu_throttle.dev_attr.attr,
&dev_attr_occ_error.attr,
NULL
};
@@ -166,6 +178,18 @@ void occ_sysfs_poll_done(struct occ *occ)
sysfs_notify(&occ->bus_dev->kobj, NULL, name);
}
+ if ((header->ext_status & OCC_EXT_STAT_DVFS_VDD) !=
+ (occ->prev_ext_stat & OCC_EXT_STAT_DVFS_VDD)) {
+ name = sensor_dev_attr_occ_dvfs_vdd.dev_attr.attr.name;
+ sysfs_notify(&occ->bus_dev->kobj, NULL, name);
+ }
+
+ if ((header->ext_status & OCC_EXT_STAT_GPU_THROTTLE) !=
+ (occ->prev_ext_stat & OCC_EXT_STAT_GPU_THROTTLE)) {
+ name = sensor_dev_attr_occ_gpu_throttle.dev_attr.attr.name;
+ sysfs_notify(&occ->bus_dev->kobj, NULL, name);
+ }
+
if ((header->status & OCC_STAT_MASTER) &&
header->occs_present != occ->prev_occs_present) {
name = sensor_dev_attr_occs_present.dev_attr.attr.name;
--
2.27.0
next prev parent reply other threads:[~2022-02-14 23:03 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-14 23:00 [PATCH linux dev-5.15 0/4] hwmon: (occ) Add various poll response data in sysfs Eddie James
2022-02-14 23:00 ` [PATCH linux dev-5.15 1/4] hwmon: (occ) Add sysfs entry for IPS (Idle Power Saver) status Eddie James
2022-02-14 23:00 ` [PATCH linux dev-5.15 2/4] hwmon: (occ) Add sysfs entry for OCC mode Eddie James
2022-02-14 23:00 ` Eddie James [this message]
2022-02-14 23:00 ` [PATCH linux dev-5.15 4/4] hwmon: (occ) Add soft minimum power cap attribute Eddie James
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