From patchwork Tue Feb 7 10:32:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Youghandhar Chintala X-Patchwork-Id: 651695 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 206ADC636CD for ; Tue, 7 Feb 2023 10:34:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231544AbjBGKeR (ORCPT ); Tue, 7 Feb 2023 05:34:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60784 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231529AbjBGKeB (ORCPT ); Tue, 7 Feb 2023 05:34:01 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6D212E0FA; Tue, 7 Feb 2023 02:33:26 -0800 (PST) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 317ACp1B001411; Tue, 7 Feb 2023 10:33:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=qcppdkim1; bh=E/fAdF/zkHo45BBMEQJvly0JrNdpGoTOtqVn/he4rmM=; b=O7wsVV3DeJvlrTP19R0VlrEu7/tziaT3755k3lDS75vSOdsmYAp+/yXn9We8ert+NQsU WBthX9hwBRDUs14MEW0S6B26dhU46pSEEg7hgSJ/uRBKnvx3xfwQuNLhyWCqHcxdnEMp iIwtsvXk1RoYJwdxVqiHPzrF8y6iDmWBNoj0DGNP3EIRsk2GYV//sZmN8zmwUVj5+rGO FNl8+IhQ5XE4KcjgkXWvT5XhzQt4W0Ugaxi0b78FhoGcEWulivkU3lao7IGAoSDpx+Ao /krCvYXONpbusFsU47bmi7L4QgzuDBntd6CIJ2crlhtObOcAYBeHWaDIVCBA0vO9a534 fQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3nkgafgpmc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Feb 2023 10:33:15 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 317AXD6o002710 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 7 Feb 2023 10:33:13 GMT Received: from youghand-linux.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.36; Tue, 7 Feb 2023 02:33:10 -0800 From: Youghandhar Chintala To: , , , , , , CC: , , , , , Youghandhar Chintala Subject: [PATCH v3 2/2] wifi: ath11k: PMIC XO cal data support Date: Tue, 7 Feb 2023 16:02:07 +0530 Message-ID: <20230207103207.759-4-quic_youghand@quicinc.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20230207103207.759-1-quic_youghand@quicinc.com> References: <20230207103207.759-1-quic_youghand@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: FZSx19-Ylg1D7_nhWf9MkyRHawd5neX9 X-Proofpoint-ORIG-GUID: FZSx19-Ylg1D7_nhWf9MkyRHawd5neX9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.219,Aquarius:18.0.930,Hydra:6.0.562,FMLib:17.11.122.1 definitions=2023-02-07_02,2023-02-06_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 malwarescore=0 adultscore=0 clxscore=1015 bulkscore=0 spamscore=0 mlxlogscore=999 mlxscore=0 priorityscore=1501 suspectscore=0 impostorscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2302070092 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org PMIC XO is the clock source for Wi-Fi RF clock in integrated Wi-Fi chipset ex: WCN6750. Due to board layout errors XO frequency drifts can cause Wi-Fi RF clock inaccuracy. XO calibration test tree in Factory Test Mode is used to find the best frequency offset(for example +/-2 KHz )by programming XO trim register. This ensure system clock stays within required 20 ppm WLAN RF clock. Retrieve the XO trim offset via system firmware (e.g., device tree), especially in the case where the device doesn't have a useful EEPROM on which to store the calibrated XO offset (e.g., for integrated Wi-Fi). Calibrated XO offset is sent to firmware, which compensate the clock drift by programing the XO trim register. Tested-on: WCN6750 hw1.0 AHB WLAN.MSL.1.0.1-00887-QCAMSLSWPLZ-1 Signed-off-by: Youghandhar Chintala --- drivers/net/wireless/ath/ath11k/ahb.c | 8 ++++++++ drivers/net/wireless/ath/ath11k/core.h | 3 +++ drivers/net/wireless/ath/ath11k/qmi.c | 24 ++++++++++++++++++++++++ drivers/net/wireless/ath/ath11k/qmi.h | 4 +++- 4 files changed, 38 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/ath11k/ahb.c b/drivers/net/wireless/ath/ath11k/ahb.c index d34a4d6325b2..89580b4e47a9 100644 --- a/drivers/net/wireless/ath/ath11k/ahb.c +++ b/drivers/net/wireless/ath/ath11k/ahb.c @@ -1039,6 +1039,14 @@ static int ath11k_ahb_fw_resources_init(struct ath11k_base *ab) ab_ahb->fw.iommu_domain = iommu_dom; of_node_put(node); + ret = of_property_read_u32(pdev->dev.of_node, "xo-cal-data", &ab->xo_cal_data); + if (ret) { + ath11k_dbg(ab, ATH11K_DBG_AHB, "failed to get xo-cal-data property\n"); + return 0; + } + ab->xo_cal_supported = true; + ath11k_dbg(ab, ATH11K_DBG_AHB, "xo cal data 0x%x\n", ab->xo_cal_data); + return 0; err_iommu_unmap: diff --git a/drivers/net/wireless/ath/ath11k/core.h b/drivers/net/wireless/ath/ath11k/core.h index 22460b0abf03..783398e98915 100644 --- a/drivers/net/wireless/ath/ath11k/core.h +++ b/drivers/net/wireless/ath/ath11k/core.h @@ -969,6 +969,9 @@ struct ath11k_base { const struct ath11k_pci_ops *ops; } pci; + bool xo_cal_supported; + u32 xo_cal_data; + /* must be last */ u8 drv_priv[] __aligned(sizeof(void *)); }; diff --git a/drivers/net/wireless/ath/ath11k/qmi.c b/drivers/net/wireless/ath/ath11k/qmi.c index 145f20a681bd..67f386b001ab 100644 --- a/drivers/net/wireless/ath/ath11k/qmi.c +++ b/drivers/net/wireless/ath/ath11k/qmi.c @@ -1451,6 +1451,24 @@ static struct qmi_elem_info qmi_wlanfw_wlan_mode_req_msg_v01_ei[] = { .offset = offsetof(struct qmi_wlanfw_wlan_mode_req_msg_v01, hw_debug), }, + { + .data_type = QMI_OPT_FLAG, + .elem_len = 1, + .elem_size = sizeof(u8), + .array_type = NO_ARRAY, + .tlv_type = 0x11, + .offset = offsetof(struct qmi_wlanfw_wlan_mode_req_msg_v01, + xo_cal_data_valid), + }, + { + .data_type = QMI_UNSIGNED_1_BYTE, + .elem_len = 1, + .elem_size = sizeof(u8), + .array_type = NO_ARRAY, + .tlv_type = 0x11, + .offset = offsetof(struct qmi_wlanfw_wlan_mode_req_msg_v01, + xo_cal_data), + }, { .data_type = QMI_EOTI, .array_type = NO_ARRAY, @@ -2610,6 +2628,12 @@ static int ath11k_qmi_wlanfw_mode_send(struct ath11k_base *ab, req.hw_debug_valid = 1; req.hw_debug = 0; + if (ab->xo_cal_supported) { + req.xo_cal_data_valid = 1; + req.xo_cal_data = ab->xo_cal_data; + } + ath11k_dbg(ab, ATH11K_DBG_QMI, "xo_cal_supported %d\n", ab->xo_cal_supported); + ret = qmi_txn_init(&ab->qmi.handle, &txn, qmi_wlanfw_wlan_mode_resp_msg_v01_ei, &resp); if (ret < 0) diff --git a/drivers/net/wireless/ath/ath11k/qmi.h b/drivers/net/wireless/ath/ath11k/qmi.h index 2ec56a34fa81..db61ce0d5689 100644 --- a/drivers/net/wireless/ath/ath11k/qmi.h +++ b/drivers/net/wireless/ath/ath11k/qmi.h @@ -450,7 +450,7 @@ struct qmi_wlanfw_m3_info_resp_msg_v01 { struct qmi_response_type_v01 resp; }; -#define QMI_WLANFW_WLAN_MODE_REQ_MSG_V01_MAX_LEN 11 +#define QMI_WLANFW_WLAN_MODE_REQ_MSG_V01_MAX_LEN 17 #define QMI_WLANFW_WLAN_MODE_RESP_MSG_V01_MAX_LEN 7 #define QMI_WLANFW_WLAN_CFG_REQ_MSG_V01_MAX_LEN 803 #define QMI_WLANFW_WLAN_CFG_RESP_MSG_V01_MAX_LEN 7 @@ -470,6 +470,8 @@ struct qmi_wlanfw_wlan_mode_req_msg_v01 { u32 mode; u8 hw_debug_valid; u8 hw_debug; + u8 xo_cal_data_valid; + u8 xo_cal_data; }; struct qmi_wlanfw_wlan_mode_resp_msg_v01 {