From patchwork Thu Aug 30 21:32:39 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eddie James X-Patchwork-Id: 10582893 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8ECD5175A for ; Thu, 30 Aug 2018 21:33:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E0352C33E for ; Thu, 30 Aug 2018 21:33:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 710CE2C353; Thu, 30 Aug 2018 21:33:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 589DB2C34E for ; Thu, 30 Aug 2018 21:33:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727786AbeHaBhT (ORCPT ); Thu, 30 Aug 2018 21:37:19 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:48556 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727782AbeHaBhS (ORCPT ); Thu, 30 Aug 2018 21:37:18 -0400 Received: from pps.filterd (m0098414.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w7ULTbsd107365 for ; Thu, 30 Aug 2018 17:33:08 -0400 Received: from e12.ny.us.ibm.com (e12.ny.us.ibm.com [129.33.205.202]) by mx0b-001b2d01.pphosted.com with ESMTP id 2m6n52fuw8-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Thu, 30 Aug 2018 17:33:07 -0400 Received: from localhost by e12.ny.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Thu, 30 Aug 2018 17:33:01 -0400 Received: from b01ledav002.gho.pok.ibm.com (b01ledav002.gho.pok.ibm.com [9.57.199.107]) by b01cxnp23034.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w7ULX1tv25297052 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 30 Aug 2018 21:33:01 GMT Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 195E8124055; Thu, 30 Aug 2018 18:33:38 -0400 (EDT) Received: from b01ledav002.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 238D0124053; Thu, 30 Aug 2018 18:33:37 -0400 (EDT) Received: from oc6728276242.ibm.com (unknown [9.85.221.248]) by b01ledav002.gho.pok.ibm.com (Postfix) with ESMTP; Thu, 30 Aug 2018 18:33:37 -0400 (EDT) From: Eddie James To: linux-kernel@vger.kernel.org Cc: linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, jdelvare@suse.com, linux-doc@vger.kernel.org, openbmc@lists.ozlabs.org, robh+dt@kernel.org, gregkh@linuxfoundation.org, mark.rutland@arm.com, linux@roeck-us.net, joel@jms.id.au, benh@kernel.crashing.org, Eddie James Subject: [PATCH v5 08/10] hwmon (occ): Add sensor types and versions Date: Thu, 30 Aug 2018 16:32:39 -0500 X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1535664761-86018-1-git-send-email-eajames@linux.vnet.ibm.com> References: <1535664761-86018-1-git-send-email-eajames@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18083021-0060-0000-0000-000002A717F1 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009640; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01081201; UDB=6.00557772; IPR=6.00861186; MB=3.00023023; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-30 21:33:06 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18083021-0061-0000-0000-00004658963F Message-Id: <1535664761-86018-9-git-send-email-eajames@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-30_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808300216 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add structures to define all sensor types and versions. Add sysfs show and store functions for each sensor type. Add a method to construct the "set user power cap" command and send it to the OCC. Add rate limit to polling the OCC (in case user-space reads our hwmon entries rapidly). Signed-off-by: Eddie James --- drivers/hwmon/occ/common.c | 621 +++++++++++++++++++++++++++++++++++++++++++++ drivers/hwmon/occ/common.h | 6 + drivers/hwmon/occ/p8_i2c.c | 1 + drivers/hwmon/occ/p9_sbe.c | 1 + 4 files changed, 629 insertions(+) diff --git a/drivers/hwmon/occ/common.c b/drivers/hwmon/occ/common.c index a066509..f7220132 100644 --- a/drivers/hwmon/occ/common.c +++ b/drivers/hwmon/occ/common.c @@ -1,10 +1,116 @@ // SPDX-License-Identifier: GPL-2.0 #include +#include +#include #include +#include +#include +#include #include "common.h" +#define EXTN_FLAG_SENSOR_ID BIT(7) + +#define OCC_UPDATE_FREQUENCY msecs_to_jiffies(1000) + +#define OCC_TEMP_SENSOR_FAULT 0xFF + +#define OCC_FRU_TYPE_VRM 3 + +/* OCC sensor type and version definitions */ + +struct temp_sensor_1 { + u16 sensor_id; + u16 value; +} __packed; + +struct temp_sensor_2 { + u32 sensor_id; + u8 fru_type; + u8 value; +} __packed; + +struct freq_sensor_1 { + u16 sensor_id; + u16 value; +} __packed; + +struct freq_sensor_2 { + u32 sensor_id; + u16 value; +} __packed; + +struct power_sensor_1 { + u16 sensor_id; + u32 update_tag; + u32 accumulator; + u16 value; +} __packed; + +struct power_sensor_2 { + u32 sensor_id; + u8 function_id; + u8 apss_channel; + u16 reserved; + u32 update_tag; + u64 accumulator; + u16 value; +} __packed; + +struct power_sensor_data { + u16 value; + u32 update_tag; + u64 accumulator; +} __packed; + +struct power_sensor_data_and_time { + u16 update_time; + u16 value; + u32 update_tag; + u64 accumulator; +} __packed; + +struct power_sensor_a0 { + u32 sensor_id; + struct power_sensor_data_and_time system; + u32 reserved; + struct power_sensor_data_and_time proc; + struct power_sensor_data vdd; + struct power_sensor_data vdn; +} __packed; + +struct caps_sensor_2 { + u16 cap; + u16 system_power; + u16 n_cap; + u16 max; + u16 min; + u16 user; + u8 user_source; +} __packed; + +struct caps_sensor_3 { + u16 cap; + u16 system_power; + u16 n_cap; + u16 max; + u16 hard_min; + u16 soft_min; + u16 user; + u8 user_source; +} __packed; + +struct extended_sensor { + union { + u8 name[4]; + u32 sensor_id; + }; + u8 flags; + u8 reserved; + u8 data[6]; +} __packed; + static int occ_poll(struct occ *occ) { u16 checksum = occ->poll_cmd_data + 1; @@ -20,9 +126,521 @@ static int occ_poll(struct occ *occ) cmd[6] = checksum & 0xFF; /* checksum lsb */ cmd[7] = 0; + /* mutex should already be locked if necessary */ return occ->send_cmd(occ, cmd); } +static int occ_set_user_power_cap(struct occ *occ, u16 user_power_cap) +{ + int rc; + u8 cmd[8]; + u16 checksum = 0x24; + __be16 user_power_cap_be = cpu_to_be16(user_power_cap); + + cmd[0] = 0; + cmd[1] = 0x22; + cmd[2] = 0; + cmd[3] = 2; + + memcpy(&cmd[4], &user_power_cap_be, 2); + + checksum += cmd[4] + cmd[5]; + cmd[6] = checksum >> 8; + cmd[7] = checksum & 0xFF; + + rc = mutex_lock_interruptible(&occ->lock); + if (rc) + return rc; + + rc = occ->send_cmd(occ, cmd); + + mutex_unlock(&occ->lock); + + return rc; +} + +static int occ_update_response(struct occ *occ) +{ + int rc = mutex_lock_interruptible(&occ->lock); + + if (rc) + return rc; + + /* limit the maximum rate of polling the OCC */ + if (time_after(jiffies, occ->last_update + OCC_UPDATE_FREQUENCY)) { + rc = occ_poll(occ); + occ->last_update = jiffies; + } + + mutex_unlock(&occ->lock); + return rc; +} + +static ssize_t occ_show_temp_1(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u32 val = 0; + struct temp_sensor_1 *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_1 *)sensors->temp.data) + sattr->index; + + switch (sattr->nr) { + case 0: + val = get_unaligned_be16(&temp->sensor_id); + break; + case 1: + val = get_unaligned_be16(&temp->value) * 1000; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%u\n", val); +} + +static ssize_t occ_show_temp_2(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u32 val = 0; + struct temp_sensor_2 *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_2 *)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; + 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) +{ + int rc; + u16 val = 0; + struct freq_sensor_1 *freq; + 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; + + freq = ((struct freq_sensor_1 *)sensors->freq.data) + sattr->index; + + switch (sattr->nr) { + case 0: + val = get_unaligned_be16(&freq->sensor_id); + break; + case 1: + val = get_unaligned_be16(&freq->value); + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%u\n", val); +} + +static ssize_t occ_show_freq_2(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u32 val = 0; + struct freq_sensor_2 *freq; + 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; + + freq = ((struct freq_sensor_2 *)sensors->freq.data) + sattr->index; + + switch (sattr->nr) { + case 0: + val = get_unaligned_be32(&freq->sensor_id); + break; + case 1: + val = get_unaligned_be16(&freq->value); + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%u\n", val); +} + +static ssize_t occ_show_power_1(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u64 val = 0; + struct power_sensor_1 *power; + 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; + + power = ((struct power_sensor_1 *)sensors->power.data) + sattr->index; + + switch (sattr->nr) { + case 0: + val = get_unaligned_be16(&power->sensor_id); + break; + case 1: + val = get_unaligned_be32(&power->accumulator) / + get_unaligned_be32(&power->update_tag); + val *= 1000000ULL; + break; + case 2: + val = get_unaligned_be32(&power->update_tag) * + occ->powr_sample_time_us; + break; + case 3: + val = get_unaligned_be16(&power->value) * 1000000ULL; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%llu\n", val); +} + +static u64 occ_get_powr_avg(u64 *accum, u32 *samples) +{ + return div64_u64(get_unaligned_be64(accum) * 1000000ULL, + get_unaligned_be32(samples)); +} + +static ssize_t occ_show_power_2(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u64 val = 0; + struct power_sensor_2 *power; + 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; + + power = ((struct power_sensor_2 *)sensors->power.data) + sattr->index; + + switch (sattr->nr) { + case 0: + return snprintf(buf, PAGE_SIZE - 1, "%u_%u_%u\n", + get_unaligned_be32(&power->sensor_id), + power->function_id, power->apss_channel); + case 1: + val = occ_get_powr_avg(&power->accumulator, + &power->update_tag); + break; + case 2: + val = get_unaligned_be32(&power->update_tag) * + occ->powr_sample_time_us; + break; + case 3: + val = get_unaligned_be16(&power->value) * 1000000ULL; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%llu\n", val); +} + +static ssize_t occ_show_power_a0(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u64 val = 0; + struct power_sensor_a0 *power; + 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; + + power = ((struct power_sensor_a0 *)sensors->power.data) + sattr->index; + + switch (sattr->nr) { + case 0: + return snprintf(buf, PAGE_SIZE - 1, "%u_system\n", + get_unaligned_be32(&power->sensor_id)); + case 1: + val = occ_get_powr_avg(&power->system.accumulator, + &power->system.update_tag); + break; + case 2: + val = get_unaligned_be32(&power->system.update_tag) * + occ->powr_sample_time_us; + break; + case 3: + val = get_unaligned_be16(&power->system.value) * 1000000ULL; + break; + case 4: + return snprintf(buf, PAGE_SIZE - 1, "%u_proc\n", + get_unaligned_be32(&power->sensor_id)); + case 5: + val = occ_get_powr_avg(&power->proc.accumulator, + &power->proc.update_tag); + break; + case 6: + val = get_unaligned_be32(&power->proc.update_tag) * + occ->powr_sample_time_us; + break; + case 7: + val = get_unaligned_be16(&power->proc.value) * 1000000ULL; + break; + case 8: + return snprintf(buf, PAGE_SIZE - 1, "%u_vdd\n", + get_unaligned_be32(&power->sensor_id)); + case 9: + val = occ_get_powr_avg(&power->vdd.accumulator, + &power->vdd.update_tag); + break; + case 10: + val = get_unaligned_be32(&power->vdd.update_tag) * + occ->powr_sample_time_us; + break; + case 11: + val = get_unaligned_be16(&power->vdd.value) * 1000000ULL; + break; + case 12: + return snprintf(buf, PAGE_SIZE - 1, "%u_vdn\n", + get_unaligned_be32(&power->sensor_id)); + case 13: + val = occ_get_powr_avg(&power->vdn.accumulator, + &power->vdn.update_tag); + break; + case 14: + val = get_unaligned_be32(&power->vdn.update_tag) * + occ->powr_sample_time_us; + break; + case 15: + val = get_unaligned_be16(&power->vdn.value) * 1000000ULL; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%llu\n", val); +} + +static ssize_t occ_show_caps_1_2(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u64 val = 0; + struct caps_sensor_2 *caps; + 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; + + caps = ((struct caps_sensor_2 *)sensors->caps.data) + sattr->index; + + switch (sattr->nr) { + case 0: + return snprintf(buf, PAGE_SIZE - 1, "system\n"); + case 1: + val = get_unaligned_be16(&caps->cap) * 1000000ULL; + break; + case 2: + val = get_unaligned_be16(&caps->system_power) * 1000000ULL; + break; + case 3: + val = get_unaligned_be16(&caps->n_cap) * 1000000ULL; + break; + case 4: + val = get_unaligned_be16(&caps->max) * 1000000ULL; + break; + case 5: + val = get_unaligned_be16(&caps->min) * 1000000ULL; + break; + case 6: + val = get_unaligned_be16(&caps->user) * 1000000ULL; + break; + case 7: + if (occ->sensors.caps.version == 1) + return -EINVAL; + + val = caps->user_source; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%llu\n", val); +} + +static ssize_t occ_show_caps_3(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + u64 val = 0; + struct caps_sensor_3 *caps; + 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; + + caps = ((struct caps_sensor_3 *)sensors->caps.data) + sattr->index; + + switch (sattr->nr) { + case 0: + return snprintf(buf, PAGE_SIZE - 1, "system\n"); + case 1: + val = get_unaligned_be16(&caps->cap) * 1000000ULL; + break; + case 2: + val = get_unaligned_be16(&caps->system_power) * 1000000ULL; + break; + case 3: + val = get_unaligned_be16(&caps->n_cap) * 1000000ULL; + break; + case 4: + val = get_unaligned_be16(&caps->max) * 1000000ULL; + break; + case 5: + val = get_unaligned_be16(&caps->hard_min) * 1000000ULL; + break; + case 6: + val = get_unaligned_be16(&caps->user) * 1000000ULL; + break; + case 7: + val = caps->user_source; + break; + default: + return -EINVAL; + } + + return snprintf(buf, PAGE_SIZE - 1, "%llu\n", val); +} + +static ssize_t occ_store_caps_user(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int rc; + u16 user_power_cap; + unsigned long long value; + struct occ *occ = dev_get_drvdata(dev); + + rc = kstrtoull(buf, 0, &value); + if (rc) + return rc; + + user_power_cap = div64_u64(value, 1000000ULL); /* microwatt to watt */ + + rc = occ_set_user_power_cap(occ, user_power_cap); + if (rc) + return rc; + + return count; +} + +static ssize_t occ_show_extended(struct device *dev, + struct device_attribute *attr, char *buf) +{ + int rc; + struct extended_sensor *extn; + 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; + + extn = ((struct extended_sensor *)sensors->extended.data) + + sattr->index; + + switch (sattr->nr) { + case 0: + if (extn->flags & EXTN_FLAG_SENSOR_ID) + rc = snprintf(buf, PAGE_SIZE - 1, "%u", + get_unaligned_be32(&extn->sensor_id)); + else + rc = snprintf(buf, PAGE_SIZE - 1, "%02x%02x%02x%02x\n", + extn->name[0], extn->name[1], + extn->name[2], extn->name[3]); + break; + case 1: + rc = snprintf(buf, PAGE_SIZE - 1, "%02x\n", extn->flags); + break; + case 2: + rc = snprintf(buf, PAGE_SIZE - 1, "%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]); + break; + default: + return -EINVAL; + } + + return rc; +} + /* only need to do this once at startup, as OCC won't change sensors on us */ static void occ_parse_poll_response(struct occ *occ) { @@ -85,6 +703,9 @@ int occ_setup(struct occ *occ, const char *name) { int rc; + mutex_init(&occ->lock); + + /* no need to lock */ rc = occ_poll(occ); if (rc == -ESHUTDOWN) { dev_info(occ->bus_dev, "host is not ready\n"); diff --git a/drivers/hwmon/occ/common.h b/drivers/hwmon/occ/common.h index 0a7a107..e074251 100644 --- a/drivers/hwmon/occ/common.h +++ b/drivers/hwmon/occ/common.h @@ -3,6 +3,8 @@ #ifndef OCC_COMMON_H #define OCC_COMMON_H +#include + struct device; #define OCC_RESP_DATA_BYTES 4089 @@ -80,8 +82,12 @@ struct occ { struct occ_response resp; struct occ_sensors sensors; + int powr_sample_time_us; /* average power sample time */ u8 poll_cmd_data; /* to perform OCC poll command */ int (*send_cmd)(struct occ *occ, u8 *cmd); + + unsigned long last_update; + struct mutex lock; /* lock OCC access */ }; int occ_setup(struct occ *occ, const char *name); diff --git a/drivers/hwmon/occ/p8_i2c.c b/drivers/hwmon/occ/p8_i2c.c index 3e34579..a736220 100644 --- a/drivers/hwmon/occ/p8_i2c.c +++ b/drivers/hwmon/occ/p8_i2c.c @@ -216,6 +216,7 @@ static int p8_i2c_occ_probe(struct i2c_client *client, occ->bus_dev = &client->dev; dev_set_drvdata(&client->dev, occ); + occ->powr_sample_time_us = 250; occ->poll_cmd_data = 0x10; /* P8 OCC poll data */ occ->send_cmd = p8_i2c_occ_send_cmd; diff --git a/drivers/hwmon/occ/p9_sbe.c b/drivers/hwmon/occ/p9_sbe.c index 377c806..d32f266 100644 --- a/drivers/hwmon/occ/p9_sbe.c +++ b/drivers/hwmon/occ/p9_sbe.c @@ -69,6 +69,7 @@ static int p9_sbe_occ_probe(struct platform_device *pdev) occ->bus_dev = &pdev->dev; platform_set_drvdata(pdev, occ); + occ->powr_sample_time_us = 500; occ->poll_cmd_data = 0x20; /* P9 OCC poll data */ occ->send_cmd = p9_sbe_occ_send_cmd;