From patchwork Fri Nov 17 09:55:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Imran Shaik X-Patchwork-Id: 745019 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="ek/5farU" Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 837B1B0; Fri, 17 Nov 2023 01:56:33 -0800 (PST) Received: from pps.filterd (m0279870.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3AH9hVsY019904; Fri, 17 Nov 2023 09:56:29 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=JqddKpimzRlgYle9qRlWJlVaZRZ8Ppxt+0YKBVXUXcQ=; b=ek/5farU/m0E/2firXx6taWOUNbkTtd7q1Mw2Gh5xAgSmjpZ11J8DC6WG076aNTdSjbR FCSD0LU3pcrPrgV85nrUlKXK/Bc0tdNqr09U5oqSzJFquBp6G7uHVQ/WTnMTKjerpnIy e/rwd5FB5V7S6P0Tg+4VbfefbomuG1ptVdTt7y09rWYxEQVMwAuwoOTQHZWPGvc/QSBe eZKZ853t9sqlKJZG31glqFbbUH9KAqX1Q/h5B9kyzidZGGeIOZgk6/fPXoOVzD1ocqd+ l4h2Y9uUTXObbRBhPCJ2UlRvb9GOaSN5NPhu62UbO5UkBPScF3OPe8oU/kAO7Hyjo2Ct bg== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3udkkutghg-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 17 Nov 2023 09:56:29 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 3AH9uSSa022970 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 17 Nov 2023 09:56:28 GMT Received: from hu-imrashai-hyd.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.40; Fri, 17 Nov 2023 01:56:22 -0800 From: Imran Shaik To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley CC: Taniya Das , Imran Shaik , , , , , , Ajit Pandey , Jagadeesh Kona Subject: [PATCH V4 2/4] clk: qcom: branch: Add mem ops support for branch2 clocks Date: Fri, 17 Nov 2023 15:25:56 +0530 Message-ID: <20231117095558.3313877-3-quic_imrashai@quicinc.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231117095558.3313877-1-quic_imrashai@quicinc.com> References: <20231117095558.3313877-1-quic_imrashai@quicinc.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: ZBqEwiHurat-NLPPK4-Qa3kLe9S6KuTs X-Proofpoint-ORIG-GUID: ZBqEwiHurat-NLPPK4-Qa3kLe9S6KuTs X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-17_07,2023-11-16_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 mlxlogscore=999 clxscore=1015 spamscore=0 impostorscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 bulkscore=0 suspectscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311170073 From: Taniya Das Add the support for mem ops implementation to handle the sequence of enable/disable of the memories in ethernet PHY, prior to enable/disable of the respective clocks, which helps retain the respecive block's register contents. Signed-off-by: Taniya Das Signed-off-by: Imran Shaik --- drivers/clk/qcom/clk-branch.c | 39 +++++++++++++++++++++++++++++++++++ drivers/clk/qcom/clk-branch.h | 21 +++++++++++++++++++ 2 files changed, 60 insertions(+) diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c index fc4735f74f0f..61bdd2147bed 100644 --- a/drivers/clk/qcom/clk-branch.c +++ b/drivers/clk/qcom/clk-branch.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* * Copyright (c) 2013, The Linux Foundation. All rights reserved. + * Copyright (c) 2023, Qualcomm Innovation Center, Inc. All rights reserved. */ #include @@ -134,6 +135,44 @@ static void clk_branch2_disable(struct clk_hw *hw) clk_branch_toggle(hw, false, clk_branch2_check_halt); } +static int clk_branch2_mem_enable(struct clk_hw *hw) +{ + struct clk_mem_branch *mem_br = to_clk_mem_branch(hw); + struct clk_branch branch = mem_br->branch; + const char *name = clk_hw_get_name(&branch.clkr.hw); + u32 val; + int ret; + + regmap_update_bits(branch.clkr.regmap, mem_br->mem_enable_reg, + mem_br->mem_enable_ack_mask, mem_br->mem_enable_ack_mask); + + ret = regmap_read_poll_timeout(branch.clkr.regmap, mem_br->mem_ack_reg, + val, val & mem_br->mem_enable_ack_mask, 0, 200); + if (ret) { + WARN(1, "%s mem enable failed\n", name); + return ret; + } + + return clk_branch2_enable(hw); +} + +static void clk_branch2_mem_disable(struct clk_hw *hw) +{ + struct clk_mem_branch *mem_br = to_clk_mem_branch(hw); + + regmap_update_bits(mem_br->branch.clkr.regmap, mem_br->mem_enable_reg, + mem_br->mem_enable_ack_mask, 0); + + return clk_branch2_disable(hw); +} + +const struct clk_ops clk_branch2_mem_ops = { + .enable = clk_branch2_mem_enable, + .disable = clk_branch2_mem_disable, + .is_enabled = clk_is_enabled_regmap, +}; +EXPORT_SYMBOL_GPL(clk_branch2_mem_ops); + const struct clk_ops clk_branch2_ops = { .enable = clk_branch2_enable, .disable = clk_branch2_disable, diff --git a/drivers/clk/qcom/clk-branch.h b/drivers/clk/qcom/clk-branch.h index 0cf800b9d08d..8ffed603c050 100644 --- a/drivers/clk/qcom/clk-branch.h +++ b/drivers/clk/qcom/clk-branch.h @@ -38,6 +38,23 @@ struct clk_branch { struct clk_regmap clkr; }; +/** + * struct clk_mem_branch - gating clock which are associated with memories + * + * @mem_enable_reg: branch clock memory gating register + * @mem_ack_reg: branch clock memory ack register + * @mem_enable_ack_mask: branch clock memory enable and ack field in @mem_ack_reg + * @branch: branch clock gating handle + * + * Clock which can gate its memories. + */ +struct clk_mem_branch { + u32 mem_enable_reg; + u32 mem_ack_reg; + u32 mem_enable_ack_mask; + struct clk_branch branch; +}; + /* Branch clock common bits for HLOS-owned clocks */ #define CBCR_CLK_OFF BIT(31) #define CBCR_NOC_FSM_STATUS GENMASK(30, 28) @@ -85,8 +102,12 @@ extern const struct clk_ops clk_branch_ops; extern const struct clk_ops clk_branch2_ops; extern const struct clk_ops clk_branch_simple_ops; extern const struct clk_ops clk_branch2_aon_ops; +extern const struct clk_ops clk_branch2_mem_ops; #define to_clk_branch(_hw) \ container_of(to_clk_regmap(_hw), struct clk_branch, clkr) +#define to_clk_mem_branch(_hw) \ + container_of(to_clk_branch(_hw), struct clk_mem_branch, branch) + #endif