From patchwork Tue Jun 23 17:36:58 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Tachici X-Patchwork-Id: 11621213 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id A893C161F for ; Tue, 23 Jun 2020 17:35:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9A16920780 for ; Tue, 23 Jun 2020 17:35:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733058AbgFWRfO (ORCPT ); Tue, 23 Jun 2020 13:35:14 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:11850 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732408AbgFWRfO (ORCPT ); Tue, 23 Jun 2020 13:35:14 -0400 Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 05NHOqaD009632; Tue, 23 Jun 2020 13:35:12 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com with ESMTP id 31uk23gr7q-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 23 Jun 2020 13:35:12 -0400 Received: from SCSQMBX10.ad.analog.com (scsqmbx10.ad.analog.com [10.77.17.5]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 05NHZABW002025 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Tue, 23 Jun 2020 13:35:11 -0400 Received: from SCSQMBX10.ad.analog.com (10.77.17.5) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Tue, 23 Jun 2020 10:35:09 -0700 Received: from zeus.spd.analog.com (10.64.82.11) by SCSQMBX10.ad.analog.com (10.77.17.5) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Tue, 23 Jun 2020 10:35:09 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 05NHYxMV017521; Tue, 23 Jun 2020 13:35:07 -0400 From: To: , , CC: , , Alexandru Tachici Subject: [PATCH v4 6/7] hwmon: pmbus: adm1266: debugfs for blackbox info Date: Tue, 23 Jun 2020 20:36:58 +0300 Message-ID: <20200623173659.41358-7-alexandru.tachici@analog.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200623173659.41358-1-alexandru.tachici@analog.com> References: <20200623173659.41358-1-alexandru.tachici@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.687 definitions=2020-06-23_11:2020-06-23,2020-06-23 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 impostorscore=0 adultscore=0 mlxlogscore=999 phishscore=0 clxscore=1015 priorityscore=1501 suspectscore=0 bulkscore=0 mlxscore=0 lowpriorityscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006120000 definitions=main-2006230123 Sender: linux-hwmon-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org From: Alexandru Tachici Add a debugfs file to print information in the BLACKBOX_INFORMATION register. Contains information about the number of stored records, logic index and id of the latest record. Signed-off-by: Alexandru Tachici --- drivers/hwmon/pmbus/adm1266.c | 56 ++++++++++++++++++++++++++++++++++- 1 file changed, 55 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/adm1266.c b/drivers/hwmon/pmbus/adm1266.c index b9e92ab1e39a..ea2dc481094b 100644 --- a/drivers/hwmon/pmbus/adm1266.c +++ b/drivers/hwmon/pmbus/adm1266.c @@ -60,6 +60,7 @@ struct adm1266_data { const char *gpio_names[ADM1266_GPIO_NR + ADM1266_PDIO_NR]; struct i2c_client *client; struct mutex ioctl_mutex; /* lock ioctl access */ + struct dentry *debugfs_dir; struct nvmem_config nvmem_config; struct nvmem_device *nvmem; u8 *dev_mem; @@ -406,6 +407,28 @@ static const struct proc_ops adm1266_proc_ops = { .proc_ioctl = adm1266_ioctl, }; +static int adm1266_blackbox_information_read(struct seq_file *s, void *pdata) +{ + struct device *dev = s->private; + struct i2c_client *client = to_i2c_client(dev); + u8 read_buf[5]; + unsigned int latest_id; + int ret; + + ret = i2c_smbus_read_block_data(client, ADM1266_BLACKBOX_INFO, + read_buf); + if (ret < 0) + return ret; + + seq_puts(s, "BLACKBOX_INFORMATION:\n"); + latest_id = read_buf[0] + (read_buf[1] << 8); + seq_printf(s, "Black box ID: %u\n", latest_id); + seq_printf(s, "Logic index: %u\n", read_buf[2]); + seq_printf(s, "Record count: %u\n", read_buf[3]); + + return 0; +} + static int adm1266_init_procfs(struct adm1266_data *data) { struct proc_dir_entry *proc_dir; @@ -423,6 +446,29 @@ static int adm1266_init_procfs(struct adm1266_data *data) return 0; } +static int adm1266_init_debugfs(struct adm1266_data *data) +{ + struct dentry *entry; + struct dentry *root; + + root = pmbus_get_debugfs_dir(data->client); + if (!root) + return -ENOENT; + + data->debugfs_dir = debugfs_create_dir(data->client->name, root); + if (!data->debugfs_dir) + return -ENOENT; + + entry = debugfs_create_devm_seqfile(&data->client->dev, + "blackbox_information", + data->debugfs_dir, + adm1266_blackbox_information_read); + if (!entry) + return -ENOENT; + + return 0; +} + static int adm1266_nvmem_read_blackbox(struct adm1266_data *data, u8 *buf) { u8 read_buf[5]; @@ -571,7 +617,15 @@ static int adm1266_probe(struct i2c_client *client, for (i = 0; i < info->pages; i++) info->func[i] = funcs; - return pmbus_do_probe(client, id, info); + ret = pmbus_do_probe(client, id, info); + if (ret) + return ret; + + ret = adm1266_init_debugfs(data); + if (ret) + dev_warn(&client->dev, "Failed to register debugfs: %d\n", ret); + + return 0; } static const struct of_device_id adm1266_of_match[] = {