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path: root/drivers/hwmon/occ/common.c
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Diffstat (limited to 'drivers/hwmon/occ/common.c')
-rw-r--r--drivers/hwmon/occ/common.c421
1 files changed, 214 insertions, 207 deletions
diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c
index 0d68a78be980..b3694a4209b9 100644
--- a/drivers/hwmon/occ/common.c
+++ b/drivers/hwmon/occ/common.c
@@ -10,8 +10,9 @@
#include <linux/math64.h>
#include <linux/module.h>
#include <linux/mutex.h>
+#include <linux/property.h>
#include <linux/sysfs.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include "common.h"
@@ -132,22 +133,20 @@ struct extended_sensor {
static int occ_poll(struct occ *occ)
{
int rc;
- u16 checksum = occ->poll_cmd_data + occ->seq_no + 1;
- u8 cmd[8];
+ u8 cmd[7];
struct occ_poll_response_header *header;
/* big endian */
- cmd[0] = occ->seq_no++; /* sequence number */
+ cmd[0] = 0; /* sequence number */
cmd[1] = 0; /* cmd type */
cmd[2] = 0; /* data length msb */
cmd[3] = 1; /* data length lsb */
cmd[4] = occ->poll_cmd_data; /* data */
- cmd[5] = checksum >> 8; /* checksum msb */
- cmd[6] = checksum & 0xFF; /* checksum lsb */
- cmd[7] = 0;
+ cmd[5] = 0; /* checksum msb */
+ cmd[6] = 0; /* checksum lsb */
/* mutex should already be locked if necessary */
- rc = occ->send_cmd(occ, cmd);
+ rc = occ->send_cmd(occ, cmd, sizeof(cmd), &occ->resp, sizeof(occ->resp));
if (rc) {
occ->last_error = rc;
if (occ->error_count++ > OCC_ERROR_COUNT_THRESHOLD)
@@ -184,25 +183,24 @@ static int occ_set_user_power_cap(struct occ *occ, u16 user_power_cap)
{
int rc;
u8 cmd[8];
- u16 checksum = 0x24;
+ u8 resp[8];
__be16 user_power_cap_be = cpu_to_be16(user_power_cap);
- cmd[0] = 0;
- cmd[1] = 0x22;
- cmd[2] = 0;
- cmd[3] = 2;
+ cmd[0] = 0; /* sequence number */
+ cmd[1] = 0x22; /* cmd type */
+ cmd[2] = 0; /* data length msb */
+ cmd[3] = 2; /* data length lsb */
memcpy(&cmd[4], &user_power_cap_be, 2);
- checksum += cmd[4] + cmd[5];
- cmd[6] = checksum >> 8;
- cmd[7] = checksum & 0xFF;
+ cmd[6] = 0; /* checksum msb */
+ cmd[7] = 0; /* checksum lsb */
rc = mutex_lock_interruptible(&occ->lock);
if (rc)
return rc;
- rc = occ->send_cmd(occ, cmd);
+ rc = occ->send_cmd(occ, cmd, sizeof(cmd), resp, sizeof(resp));
mutex_unlock(&occ->lock);
@@ -340,18 +338,11 @@ static ssize_t occ_show_temp_10(struct device *dev,
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;
+ /* sensor not ready */
+ if (val == 0)
+ return -EAGAIN;
- val *= 1000;
- }
+ val *= 1000;
break;
case 2:
val = temp->fru_type;
@@ -468,12 +459,10 @@ static ssize_t occ_show_power_1(struct device *dev,
return sysfs_emit(buf, "%llu\n", val);
}
-static u64 occ_get_powr_avg(u64 *accum, u32 *samples)
+static u64 occ_get_powr_avg(u64 accum, u32 samples)
{
- u64 divisor = get_unaligned_be32(samples);
-
- return (divisor == 0) ? 0 :
- div64_u64(get_unaligned_be64(accum) * 1000000ULL, divisor);
+ return (samples == 0) ? 0 :
+ mul_u64_u32_div(accum, 1000000UL, samples);
}
static ssize_t occ_show_power_2(struct device *dev,
@@ -498,8 +487,8 @@ static ssize_t occ_show_power_2(struct device *dev,
get_unaligned_be32(&power->sensor_id),
power->function_id, power->apss_channel);
case 1:
- val = occ_get_powr_avg(&power->accumulator,
- &power->update_tag);
+ val = occ_get_powr_avg(get_unaligned_be64(&power->accumulator),
+ get_unaligned_be32(&power->update_tag));
break;
case 2:
val = (u64)get_unaligned_be32(&power->update_tag) *
@@ -536,8 +525,8 @@ static ssize_t occ_show_power_a0(struct device *dev,
return sysfs_emit(buf, "%u_system\n",
get_unaligned_be32(&power->sensor_id));
case 1:
- val = occ_get_powr_avg(&power->system.accumulator,
- &power->system.update_tag);
+ val = occ_get_powr_avg(get_unaligned_be64(&power->system.accumulator),
+ get_unaligned_be32(&power->system.update_tag));
break;
case 2:
val = (u64)get_unaligned_be32(&power->system.update_tag) *
@@ -550,8 +539,8 @@ static ssize_t occ_show_power_a0(struct device *dev,
return sysfs_emit(buf, "%u_proc\n",
get_unaligned_be32(&power->sensor_id));
case 5:
- val = occ_get_powr_avg(&power->proc.accumulator,
- &power->proc.update_tag);
+ val = occ_get_powr_avg(get_unaligned_be64(&power->proc.accumulator),
+ get_unaligned_be32(&power->proc.update_tag));
break;
case 6:
val = (u64)get_unaligned_be32(&power->proc.update_tag) *
@@ -564,8 +553,8 @@ static ssize_t occ_show_power_a0(struct device *dev,
return sysfs_emit(buf, "%u_vdd\n",
get_unaligned_be32(&power->sensor_id));
case 9:
- val = occ_get_powr_avg(&power->vdd.accumulator,
- &power->vdd.update_tag);
+ val = occ_get_powr_avg(get_unaligned_be64(&power->vdd.accumulator),
+ get_unaligned_be32(&power->vdd.update_tag));
break;
case 10:
val = (u64)get_unaligned_be32(&power->vdd.update_tag) *
@@ -578,8 +567,8 @@ static ssize_t occ_show_power_a0(struct device *dev,
return sysfs_emit(buf, "%u_vdn\n",
get_unaligned_be32(&power->sensor_id));
case 13:
- val = occ_get_powr_avg(&power->vdn.accumulator,
- &power->vdn.update_tag);
+ val = occ_get_powr_avg(get_unaligned_be64(&power->vdn.accumulator),
+ get_unaligned_be32(&power->vdn.update_tag));
break;
case 14:
val = (u64)get_unaligned_be32(&power->vdn.update_tag) *
@@ -685,6 +674,9 @@ static ssize_t occ_show_caps_3(struct device *dev,
case 7:
val = caps->user_source;
break;
+ case 8:
+ val = get_unaligned_be16(&caps->soft_min) * 1000000ULL;
+ break;
default:
return -EINVAL;
}
@@ -736,18 +728,14 @@ static ssize_t occ_show_extended(struct device *dev,
rc = sysfs_emit(buf, "%u",
get_unaligned_be32(&extn->sensor_id));
} else {
- rc = sysfs_emit(buf, "%02x%02x%02x%02x\n",
- extn->name[0], extn->name[1],
- extn->name[2], extn->name[3]);
+ rc = sysfs_emit(buf, "%4phN\n", extn->name);
}
break;
case 1:
rc = sysfs_emit(buf, "%02x\n", extn->flags);
break;
case 2:
- rc = sysfs_emit(buf, "%02x%02x%02x%02x%02x%02x\n",
- extn->data[0], extn->data[1], extn->data[2],
- extn->data[3], extn->data[4], extn->data[5]);
+ rc = sysfs_emit(buf, "%6phN\n", extn->data);
break;
default:
return -EINVAL;
@@ -757,29 +745,30 @@ static ssize_t occ_show_extended(struct device *dev,
}
/*
- * Some helper macros to make it easier to define an occ_attribute. Since these
- * are dynamically allocated, we shouldn't use the existing kernel macros which
+ * A helper to make it easier to define an occ_attribute. Since these
+ * are dynamically allocated, we cannot use the existing kernel macros which
* stringify the name argument.
*/
-#define ATTR_OCC(_name, _mode, _show, _store) { \
- .attr = { \
- .name = _name, \
- .mode = VERIFY_OCTAL_PERMISSIONS(_mode), \
- }, \
- .show = _show, \
- .store = _store, \
-}
-
-#define SENSOR_ATTR_OCC(_name, _mode, _show, _store, _nr, _index) { \
- .dev_attr = ATTR_OCC(_name, _mode, _show, _store), \
- .index = _index, \
- .nr = _nr, \
+static void occ_init_attribute(struct occ_attribute *attr, int mode,
+ ssize_t (*show)(struct device *dev, struct device_attribute *attr, char *buf),
+ ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+ const char *buf, size_t count),
+ int nr, int index, const char *fmt, ...)
+{
+ va_list args;
+
+ va_start(args, fmt);
+ vsnprintf(attr->name, sizeof(attr->name), fmt, args);
+ va_end(args);
+
+ attr->sensor.dev_attr.attr.name = attr->name;
+ attr->sensor.dev_attr.attr.mode = mode;
+ attr->sensor.dev_attr.show = show;
+ attr->sensor.dev_attr.store = store;
+ attr->sensor.index = index;
+ attr->sensor.nr = nr;
}
-#define OCC_INIT_ATTR(_name, _mode, _show, _store, _nr, _index) \
- ((struct sensor_device_attribute_2) \
- SENSOR_ATTR_OCC(_name, _mode, _show, _store, _nr, _index))
-
/*
* Allocate and instatiate sensor_device_attribute_2s. It's most efficient to
* use our own instead of the built-in hwmon attribute types.
@@ -846,12 +835,13 @@ static int occ_setup_sensor_attrs(struct occ *occ)
case 1:
num_attrs += (sensors->caps.num_sensors * 7);
break;
- case 3:
- show_caps = occ_show_caps_3;
- fallthrough;
case 2:
num_attrs += (sensors->caps.num_sensors * 8);
break;
+ case 3:
+ show_caps = occ_show_caps_3;
+ num_attrs += (sensors->caps.num_sensors * 9);
+ break;
default:
sensors->caps.num_sensors = 0;
}
@@ -864,14 +854,15 @@ static int occ_setup_sensor_attrs(struct occ *occ)
sensors->extended.num_sensors = 0;
}
- occ->attrs = devm_kzalloc(dev, sizeof(*occ->attrs) * num_attrs,
+ occ->attrs = devm_kcalloc(dev, num_attrs, sizeof(*occ->attrs),
GFP_KERNEL);
if (!occ->attrs)
return -ENOMEM;
/* null-terminated list */
- occ->group.attrs = devm_kzalloc(dev, sizeof(*occ->group.attrs) *
- num_attrs + 1, GFP_KERNEL);
+ occ->group.attrs = devm_kcalloc(dev, num_attrs + 1,
+ sizeof(*occ->group.attrs),
+ GFP_KERNEL);
if (!occ->group.attrs)
return -ENOMEM;
@@ -881,43 +872,33 @@ static int occ_setup_sensor_attrs(struct occ *occ)
s = i + 1;
temp = ((struct temp_sensor_2 *)sensors->temp.data) + i;
- snprintf(attr->name, sizeof(attr->name), "temp%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_temp, NULL,
- 0, i);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 0, i, "temp%d_label", s);
attr++;
- if (sensors->temp.version > 1 &&
+ if (sensors->temp.version == 2 &&
temp->fru_type == OCC_FRU_TYPE_VRM) {
- snprintf(attr->name, sizeof(attr->name),
- "temp%d_alarm", s);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 1, i, "temp%d_alarm", s);
} else {
- snprintf(attr->name, sizeof(attr->name),
- "temp%d_input", s);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 1, i, "temp%d_input", s);
}
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_temp, NULL,
- 1, i);
attr++;
if (sensors->temp.version > 1) {
- snprintf(attr->name, sizeof(attr->name),
- "temp%d_fru_type", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_temp, NULL, 2, i);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 2, i, "temp%d_fru_type", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "temp%d_fault", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_temp, NULL, 3, i);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 3, i, "temp%d_fault", s);
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);
+ occ_init_attribute(attr, 0444, show_temp, NULL,
+ 4, i, "temp%d_max", s);
attr++;
}
}
@@ -926,14 +907,12 @@ static int occ_setup_sensor_attrs(struct occ *occ)
for (i = 0; i < sensors->freq.num_sensors; ++i) {
s = i + 1;
- snprintf(attr->name, sizeof(attr->name), "freq%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_freq, NULL,
- 0, i);
+ occ_init_attribute(attr, 0444, show_freq, NULL,
+ 0, i, "freq%d_label", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "freq%d_input", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_freq, NULL,
- 1, i);
+ occ_init_attribute(attr, 0444, show_freq, NULL,
+ 1, i, "freq%d_input", s);
attr++;
}
@@ -949,32 +928,24 @@ static int occ_setup_sensor_attrs(struct occ *occ)
s = (i * 4) + 1;
for (j = 0; j < 4; ++j) {
- snprintf(attr->name, sizeof(attr->name),
- "power%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL,
- nr++, i);
+ occ_init_attribute(attr, 0444, show_power,
+ NULL, nr++, i,
+ "power%d_label", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_average", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL,
- nr++, i);
+ occ_init_attribute(attr, 0444, show_power,
+ NULL, nr++, i,
+ "power%d_average", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_average_interval", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL,
- nr++, i);
+ occ_init_attribute(attr, 0444, show_power,
+ NULL, nr++, i,
+ "power%d_average_interval", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_input", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL,
- nr++, i);
+ occ_init_attribute(attr, 0444, show_power,
+ NULL, nr++, i,
+ "power%d_input", s);
attr++;
s++;
@@ -986,28 +957,20 @@ static int occ_setup_sensor_attrs(struct occ *occ)
for (i = 0; i < sensors->power.num_sensors; ++i) {
s = i + 1;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL, 0, i);
+ occ_init_attribute(attr, 0444, show_power, NULL,
+ 0, i, "power%d_label", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_average", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL, 1, i);
+ occ_init_attribute(attr, 0444, show_power, NULL,
+ 1, i, "power%d_average", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_average_interval", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL, 2, i);
+ occ_init_attribute(attr, 0444, show_power, NULL,
+ 2, i, "power%d_average_interval", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_input", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_power, NULL, 3, i);
+ occ_init_attribute(attr, 0444, show_power, NULL,
+ 3, i, "power%d_input", s);
attr++;
}
@@ -1015,68 +978,61 @@ static int occ_setup_sensor_attrs(struct occ *occ)
}
if (sensors->caps.num_sensors >= 1) {
- snprintf(attr->name, sizeof(attr->name), "power%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 0, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 0, 0, "power%d_label", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "power%d_cap", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 1, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 1, 0, "power%d_cap", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "power%d_input", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 2, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 2, 0, "power%d_input", s);
attr++;
- snprintf(attr->name, sizeof(attr->name),
- "power%d_cap_not_redundant", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 3, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 3, 0, "power%d_cap_not_redundant", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "power%d_cap_max", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 4, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 4, 0, "power%d_cap_max", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "power%d_cap_min", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444, show_caps, NULL,
- 5, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 5, 0, "power%d_cap_min", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "power%d_cap_user",
- s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0644, show_caps,
- occ_store_caps_user, 6, 0);
+ occ_init_attribute(attr, 0644, show_caps, occ_store_caps_user,
+ 6, 0, "power%d_cap_user", s);
attr++;
if (sensors->caps.version > 1) {
- snprintf(attr->name, sizeof(attr->name),
- "power%d_cap_user_source", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- show_caps, NULL, 7, 0);
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 7, 0, "power%d_cap_user_source", s);
attr++;
+
+ if (sensors->caps.version > 2) {
+ occ_init_attribute(attr, 0444, show_caps, NULL,
+ 8, 0,
+ "power%d_cap_min_soft", s);
+ attr++;
+ }
}
}
for (i = 0; i < sensors->extended.num_sensors; ++i) {
s = i + 1;
- snprintf(attr->name, sizeof(attr->name), "extn%d_label", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- occ_show_extended, NULL, 0, i);
+ occ_init_attribute(attr, 0444, occ_show_extended, NULL,
+ 0, i, "extn%d_label", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "extn%d_flags", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- occ_show_extended, NULL, 1, i);
+ occ_init_attribute(attr, 0444, occ_show_extended, NULL,
+ 1, i, "extn%d_flags", s);
attr++;
- snprintf(attr->name, sizeof(attr->name), "extn%d_input", s);
- attr->sensor = OCC_INIT_ATTR(attr->name, 0444,
- occ_show_extended, NULL, 2, i);
+ occ_init_attribute(attr, 0444, occ_show_extended, NULL,
+ 2, i, "extn%d_input", s);
attr++;
}
@@ -1147,54 +1103,105 @@ static void occ_parse_poll_response(struct occ *occ)
sizeof(*header), size + sizeof(*header));
}
-int occ_setup(struct occ *occ, const char *name)
+int occ_active(struct occ *occ, bool active)
{
- int rc;
-
- /* start with 1 to avoid false match with zero-initialized SRAM buffer */
- occ->seq_no = 1;
- mutex_init(&occ->lock);
- occ->groups[0] = &occ->group;
+ int rc = mutex_lock_interruptible(&occ->lock);
- /* no need to lock */
- rc = occ_poll(occ);
- if (rc == -ESHUTDOWN) {
- dev_info(occ->bus_dev, "host is not ready\n");
- return rc;
- } else if (rc < 0) {
- dev_err(occ->bus_dev,
- "failed to get OCC poll response=%02x: %d\n",
- occ->resp.return_status, rc);
+ if (rc)
return rc;
+
+ if (active) {
+ if (occ->active) {
+ rc = -EALREADY;
+ goto unlock;
+ }
+
+ occ->error_count = 0;
+ occ->last_safe = 0;
+
+ rc = occ_poll(occ);
+ if (rc < 0) {
+ dev_err(occ->bus_dev,
+ "failed to get OCC poll response=%02x: %d\n",
+ occ->resp.return_status, rc);
+ goto unlock;
+ }
+
+ occ->active = true;
+ occ->next_update = jiffies + OCC_UPDATE_FREQUENCY;
+ occ_parse_poll_response(occ);
+
+ rc = occ_setup_sensor_attrs(occ);
+ if (rc) {
+ dev_err(occ->bus_dev,
+ "failed to setup sensor attrs: %d\n", rc);
+ goto unlock;
+ }
+
+ occ->hwmon = hwmon_device_register_with_groups(occ->bus_dev,
+ "occ", occ,
+ occ->groups);
+ if (IS_ERR(occ->hwmon)) {
+ rc = PTR_ERR(occ->hwmon);
+ occ->hwmon = NULL;
+ dev_err(occ->bus_dev,
+ "failed to register hwmon device: %d\n", rc);
+ goto unlock;
+ }
+ } else {
+ if (!occ->active) {
+ rc = -EALREADY;
+ goto unlock;
+ }
+
+ if (occ->hwmon)
+ hwmon_device_unregister(occ->hwmon);
+ occ->active = false;
+ occ->hwmon = NULL;
}
- occ->next_update = jiffies + OCC_UPDATE_FREQUENCY;
- occ_parse_poll_response(occ);
+unlock:
+ mutex_unlock(&occ->lock);
+ return rc;
+}
- rc = occ_setup_sensor_attrs(occ);
+int occ_setup(struct occ *occ)
+{
+ int rc;
+
+ mutex_init(&occ->lock);
+ occ->groups[0] = &occ->group;
+
+ rc = occ_setup_sysfs(occ);
if (rc) {
- dev_err(occ->bus_dev, "failed to setup sensor attrs: %d\n",
- rc);
+ dev_err(occ->bus_dev, "failed to setup sysfs: %d\n", rc);
return rc;
}
- occ->hwmon = devm_hwmon_device_register_with_groups(occ->bus_dev, name,
- occ, occ->groups);
- if (IS_ERR(occ->hwmon)) {
- rc = PTR_ERR(occ->hwmon);
- dev_err(occ->bus_dev, "failed to register hwmon device: %d\n",
- rc);
- return rc;
+ if (!device_property_read_bool(occ->bus_dev, "ibm,no-poll-on-init")) {
+ rc = occ_active(occ, true);
+ if (rc)
+ occ_shutdown_sysfs(occ);
}
- rc = occ_setup_sysfs(occ);
- if (rc)
- dev_err(occ->bus_dev, "failed to setup sysfs: %d\n", rc);
-
return rc;
}
EXPORT_SYMBOL_GPL(occ_setup);
+void occ_shutdown(struct occ *occ)
+{
+ mutex_lock(&occ->lock);
+
+ occ_shutdown_sysfs(occ);
+
+ if (occ->hwmon)
+ hwmon_device_unregister(occ->hwmon);
+ occ->hwmon = NULL;
+
+ mutex_unlock(&occ->lock);
+}
+EXPORT_SYMBOL_GPL(occ_shutdown);
+
MODULE_AUTHOR("Eddie James <eajames@linux.ibm.com>");
MODULE_DESCRIPTION("Common OCC hwmon code");
MODULE_LICENSE("GPL");
generated by cgit (git 2.34.1) at 2025-12-24 19:32:04 +0000