From patchwork Thu Sep 1 12:47:29 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajendra Nayak X-Patchwork-Id: 601836 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 DFEEBC0502C for ; Thu, 1 Sep 2022 12:48:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233578AbiIAMsz (ORCPT ); Thu, 1 Sep 2022 08:48:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60454 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233513AbiIAMst (ORCPT ); Thu, 1 Sep 2022 08:48:49 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CDDD0647F9; Thu, 1 Sep 2022 05:48:46 -0700 (PDT) Received: from pps.filterd (m0279862.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2819cOPP020780; Thu, 1 Sep 2022 12:48:40 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-type; s=qcppdkim1; bh=YDANJShkBITQ4xndGorA1hHkZ/z2G5Wg8fXMHi8dXtM=; b=jW9ave1WPgNXdbTsEvFOyqyM/UYv1eHP66PCwJdXmAWtfecslrubJ92gjuBA+xylIb40 gGQnUtWVt8Q0sSNsSVAy5UX6p1jts/khj5ZWQw5bgLfwBnpevQJxVX49/OC+ceTb9gpR C0lnW0N8tQZTZdDkEPShoXp1UNm3l3AvjeKc09tKDFj2om/rNGcOyMCADC3pGtyKlIf6 jQTLDY02cocqpuIifdm6ItzbTRSs4z6cmH87FzbnTNekODx64ULHYYEz64TrAJwqKq+y a/cqp5v2uuLkKBXe8GaUwCelIdBaEPUCHBe6tgjpHk9PNU8Dmj+RkHVqDbVyWaSWJjD4 MQ== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3jabgcua8k-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 01 Sep 2022 12:48:40 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 281CmdXD024772 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 1 Sep 2022 12:48:39 GMT Received: from blr-ubuntu-173.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 15.2.986.29; Thu, 1 Sep 2022 05:48:37 -0700 From: Rajendra Nayak To: , , , , CC: , , , Rajendra Nayak Subject: [PATCH 3/4] soc: qcom: icc-bwmon: force clear counter/irq registers Date: Thu, 1 Sep 2022 18:17:29 +0530 Message-ID: <20220901124730.19460-4-quic_rjendra@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220901124730.19460-1-quic_rjendra@quicinc.com> References: <20220901124730.19460-1-quic_rjendra@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-ORIG-GUID: NwWToRiqSgdaJRZT3f1IMCjTR5qii7ij X-Proofpoint-GUID: NwWToRiqSgdaJRZT3f1IMCjTR5qii7ij X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-09-01_08,2022-08-31_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 mlxscore=0 lowpriorityscore=0 adultscore=0 clxscore=1015 phishscore=0 bulkscore=0 priorityscore=1501 mlxlogscore=857 spamscore=0 malwarescore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2209010058 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org In some SoCs we have to force clear the counter/irq clear registers as they are not self clearing after they are written into. sc7280 seems to be one such SoC, handle this with a quirk flag. Signed-off-by: Rajendra Nayak --- drivers/soc/qcom/icc-bwmon.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/soc/qcom/icc-bwmon.c b/drivers/soc/qcom/icc-bwmon.c index 44a10009b45e..17cba2648ae7 100644 --- a/drivers/soc/qcom/icc-bwmon.c +++ b/drivers/soc/qcom/icc-bwmon.c @@ -115,6 +115,7 @@ /* Quirks for specific BWMON types */ #define BWMON_HAS_GLOBAL_IRQ BIT(0) +#define BWMON_NEEDS_FORCE_CLEAR BIT(1) enum bwmon_fields { F_GLOBAL_IRQ_CLEAR, @@ -343,6 +344,8 @@ static void bwmon_clear_counters(struct icc_bwmon *bwmon, bool clear_all) * before we try to clear the IRQ or do any other counter operations. */ regmap_field_force_write(bwmon->regs[F_CLEAR], val); + if (bwmon->data->quirks & BWMON_NEEDS_FORCE_CLEAR) + regmap_field_force_write(bwmon->regs[F_CLEAR], 0); } static void bwmon_clear_irq(struct icc_bwmon *bwmon) @@ -364,6 +367,8 @@ static void bwmon_clear_irq(struct icc_bwmon *bwmon) * interrupt is cleared. */ regmap_field_force_write(bwmon->regs[F_IRQ_CLEAR], BWMON_IRQ_ENABLE_MASK); + if (bwmon->data->quirks & BWMON_NEEDS_FORCE_CLEAR) + regmap_field_force_write(bwmon->regs[F_IRQ_CLEAR], 0); if (bwmon->data->quirks & BWMON_HAS_GLOBAL_IRQ) regmap_field_force_write(bwmon->regs[F_GLOBAL_IRQ_CLEAR], BWMON_V4_GLOBAL_IRQ_ENABLE_ENABLE); @@ -664,6 +669,7 @@ static const struct icc_bwmon_data sc7280_llcc_bwmon_data = { .default_lowbw_kbps = 0, .zone1_thres_count = 16, .zone3_thres_count = 1, + .quirks = BWMON_NEEDS_FORCE_CLEAR, .regmap_fields = sdm845_llcc_bwmon_reg_fields, .regmap_cfg = &sdm845_llcc_bwmon_regmap_cfg, };