From patchwork Mon Jul 27 16:18:05 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Tachici X-Patchwork-Id: 11687129 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 8E04E1392 for ; Mon, 27 Jul 2020 16:17:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 808782078A for ; Mon, 27 Jul 2020 16:17:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731295AbgG0QQf (ORCPT ); Mon, 27 Jul 2020 12:16:35 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:14046 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726728AbgG0QQf (ORCPT ); Mon, 27 Jul 2020 12:16:35 -0400 Received: from pps.filterd (m0167089.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 06RG7wf5019076; Mon, 27 Jul 2020 12:16:34 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com with ESMTP id 32ghn5eykm-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Jul 2020 12:16:32 -0400 Received: from SCSQMBX11.ad.analog.com (scsqmbx11.ad.analog.com [10.77.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 06RGGVwN050426 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=FAIL); Mon, 27 Jul 2020 12:16:31 -0400 Received: from SCSQCASHYB6.ad.analog.com (10.77.17.132) by SCSQMBX11.ad.analog.com (10.77.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Mon, 27 Jul 2020 09:16:29 -0700 Received: from SCSQMBX11.ad.analog.com (10.77.17.10) by SCSQCASHYB6.ad.analog.com (10.77.17.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1779.2; Mon, 27 Jul 2020 09:16:17 -0700 Received: from zeus.spd.analog.com (10.64.82.11) by SCSQMBX11.ad.analog.com (10.77.17.10) with Microsoft SMTP Server id 15.1.1779.2 via Frontend Transport; Mon, 27 Jul 2020 09:16:29 -0700 Received: from localhost.localdomain ([10.48.65.12]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 06RGGShh009603; Mon, 27 Jul 2020 12:16:28 -0400 From: To: , , CC: , Subject: [PATCH v7 0/9] hwmon: pmbus: adm1266: add support Date: Mon, 27 Jul 2020 19:18:05 +0300 Message-ID: <20200727161814.14076-1-alexandru.tachici@analog.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.235,18.0.687 definitions=2020-07-27_11:2020-07-27,2020-07-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 bulkscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 suspectscore=0 malwarescore=0 phishscore=0 spamscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2007270111 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org From: Alexandru Tachici Add PMBus probing driver for the adm1266 Cascadable Super Sequencer with Margin Control and Fault Recording. Driver is using the pmbus_core, creating sysfs files under hwmon for inputs: vh1->vh4 and vp1->vp13. 1. Add PMBus probing driver for inputs vh1->vh4 and vp1->vp13. 2. Add Block Write-Read Process Call command. A PMBus specific implementation was required because block write with I2C_SMBUS_PROC_CALL flag allows a maximum of 32 bytes to be received. 3. This makes adm1266 driver expose GPIOs to user-space. Currently are read only. Future developments on the firmware will allow them to be writable. 4. Allow the current sate of the sequencer to be read through debugfs. 5. Blackboxes are 64 bytes of chip state related data that is generated on faults. Use the nvmem kernel api to expose the blackbox chip functionality to userspace. 6. Add group command support. This will allow the driver to stop/program all cascaded adm1266 devices at once. 7. Writing the firmware hex file with offset 0 to the nvmem of the master adm1266 will trigger the firmware programming of all cascaded devices. The master adm1266 of each device is specified in the devicetree. 8. Writing the configuration hex file to 0x30000 byte address of the nvmem file will trigger the programming of that device in particular. 9. DT bindings for ADM1266. Alexandru Tachici (9): hwmon: pmbus: adm1266: add support hwmon: pmbus: adm1266: Add Block process call hwmon: pmbus: adm1266: Add support for GPIOs hwmon: pmbus: adm1266: add debugfs for states hwmon: pmbus: adm1266: read blackbox hwmon: pmbus: adm1266: Add group command support hwmon: pmbus: adm1266: program firmware hwmon: pmbus: adm1266: program configuration dt-bindings: hwmon: Add bindings for ADM1266 Changelog: v5 -> v6: - added adm1266 to index.rst - changed max lines length from 80 to 100 - replaced i2c_get_dma_safe_msg_buf with the use of kzalloc and ____cacheline_aligned - removed #ifdef CONFIG_GPIOLIB - removed ioctl commands, the state of the device can be read through debugfs - use the device managed version of nvmem_register - on power-up, set the UNIX time to adm1266 (this value is reset to 0 on each power-cycle). - removed patch adm1266: debugfs for blackbox info, rtc in blackbox is enough to help identify the current index - added two new nvmem cells for firmware and configuration Changelog: v6 -> v7: - fixed compilation warning: removed unused variable ,entry, in adm1266_init_debugfs .../bindings/hwmon/adi,adm1266.yaml | 56 + Documentation/hwmon/adm1266.rst | 37 + Documentation/hwmon/index.rst | 1 + drivers/hwmon/pmbus/Kconfig | 10 + drivers/hwmon/pmbus/Makefile | 1 + drivers/hwmon/pmbus/adm1266.c | 1272 +++++++++++++++++ 6 files changed, 1377 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwmon/adi,adm1266.yaml create mode 100644 Documentation/hwmon/adm1266.rst create mode 100644 drivers/hwmon/pmbus/adm1266.c