From patchwork Thu May 18 11:37:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Srinivas Kandagatla X-Patchwork-Id: 13246610 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 82B57C7EE22 for ; Thu, 18 May 2023 11:40:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230025AbjERLkv (ORCPT ); Thu, 18 May 2023 07:40:51 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36446 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231381AbjERLkm (ORCPT ); Thu, 18 May 2023 07:40:42 -0400 Received: from mail-wr1-x432.google.com (mail-wr1-x432.google.com [IPv6:2a00:1450:4864:20::432]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A386E210B for ; Thu, 18 May 2023 04:40:18 -0700 (PDT) Received: by mail-wr1-x432.google.com with SMTP id ffacd0b85a97d-3078fa679a7so1869032f8f.3 for ; Thu, 18 May 2023 04:40:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1684409995; x=1687001995; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=qPXk1G4TeGhvqAZ70qQMmoWif1eMKz4WBDv+NwIbmwQ=; b=in1UNHtJKNyK1lqHVENrTvEHMHutaKeL1hNmN5eeaWx+S+jN0wOoNfFX5rFzG6J/t+ UJMbenHmIzMWZq2rrLh4Gp0fKjKwdQDgDm8ctMC9tYvXTYIsb5SvM2Yv7fHCs7vX6oej Veh1wDApeZMAo9YuyD5HReehBnLA7y9fs0Z9/SXR+whmh7r21Tms5SyP58zv9wN0Mmob 8bYx1QeHsBmVOeDXV7XOwBzWEmHmPKo4UHICraXH0qY92GqsDFcGwqY6iqr4QQTPQ9v5 wPUf2C+O1wjSEhv2+UE82pXBkNP89M4B01ehegK77r9HpCMjqTx3KJz/MwJ9mUsr3c+p zVQw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684409995; x=1687001995; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=qPXk1G4TeGhvqAZ70qQMmoWif1eMKz4WBDv+NwIbmwQ=; b=CM4LzxAfayTYiLjjn/dzxdrzwlfoU7zoveQ5IGDKnNeRXQX0dhpg1rSFPayjHkQnb+ w5Kvpltkm9kdiWCYWo2Xdfew14Vr1fq2e7p5k/x64djqfD9hnmDWPYM6Zo8aeSwUk+JN X2dVi2OnfHb1iGRUcdwms4RX20SjyWH6wIlC+fTDdJ6b7y3fWq7D2ffHrM5SFsHwcETA oSTlBxcSh1VOEjIMbyThQLvvk5dcLXr6MW2UwCJ9sIxGQzmXZGOpqL9MSvk/+hY9AFGu tjN5LG4udj/mNuW8mH1MfQOEDdwFESqJS9RoBwFBbQgU7ctSPcOB45v1l6JwduOxmQha /U9Q== X-Gm-Message-State: AC+VfDybXPEGPvQ+a1f8I7MFof5k9sl427BqfrSOXg/YGoAomBsxrd0h wwnSZ8DZ3leZF7/Bczp5qXQBjw== X-Google-Smtp-Source: ACHHUZ6o9HZsu2rFZ7hMK2R3yEs2nvra64q0mfIeGYWwM0nsfu7X8YVEXZ+sH87T82mfyq16wffaHA== X-Received: by 2002:a5d:5947:0:b0:306:2de6:6f9b with SMTP id e7-20020a5d5947000000b003062de66f9bmr1209915wri.58.1684409995598; Thu, 18 May 2023 04:39:55 -0700 (PDT) Received: from localhost.localdomain ([5.133.47.210]) by smtp.gmail.com with ESMTPSA id f14-20020a5d568e000000b003047d5b8817sm1897135wrv.80.2023.05.18.04.39.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 18 May 2023 04:39:55 -0700 (PDT) From: Srinivas Kandagatla To: andersson@kernel.org, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: johan+linaro@kernel.org, agross@kernel.org, konrad.dybcio@linaro.org, mturquette@baylibre.com, sboyd@kernel.org, conor+dt@kernel.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Srinivas Kandagatla Subject: [PATCH 3/5] clk: qcom: Add lpass clock controller driver for SC8280XP Date: Thu, 18 May 2023 12:37:58 +0100 Message-Id: <20230518113800.339158-4-srinivas.kandagatla@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230518113800.339158-1-srinivas.kandagatla@linaro.org> References: <20230518113800.339158-1-srinivas.kandagatla@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support for the lpass clock controller found on SC8280XP based devices. This would allow lpass peripheral loader drivers to control the clocks and bring the subsystems out of reset. Currently this patch only supports resets as the Q6DSP is in control of LPASS IP which manages most of the clocks via Q6PRM service on GPR rpmsg channel. Signed-off-by: Srinivas Kandagatla --- drivers/clk/qcom/Kconfig | 8 ++++ drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/lpasscc-sc8280xp.c | 71 +++++++++++++++++++++++++++++ 3 files changed, 80 insertions(+) create mode 100644 drivers/clk/qcom/lpasscc-sc8280xp.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 12be3e2371b3..8188f4dedf40 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -514,6 +514,14 @@ config SC_GPUCC_8280XP Say Y if you want to support graphics controller devices and functionality such as 3D graphics. +config SC_LPASSCC_8280XP + tristate "SC8280 Low Power Audio Subsystem (LPASS) Clock Controller" + select SC_GCC_8280XP + help + Support for the LPASS clock controller on SC8280XP devices. + Say Y if you want to use the LPASS branch clocks of the LPASS clock + controller to reset the LPASS subsystem. + config SC_LPASSCC_7280 tristate "SC7280 Low Power Audio Subsystem (LPASS) Clock Controller" select SC_GCC_7280 diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index 9ff4c373ad95..dce2dd639524 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -71,6 +71,7 @@ obj-$(CONFIG_SC_CAMCC_7280) += camcc-sc7280.o obj-$(CONFIG_SC_DISPCC_7180) += dispcc-sc7180.o obj-$(CONFIG_SC_DISPCC_7280) += dispcc-sc7280.o obj-$(CONFIG_SC_DISPCC_8280XP) += dispcc-sc8280xp.o +obj-$(CONFIG_SC_LPASSCC_8280XP) += lpasscc-sc8280xp.o obj-$(CONFIG_SA_GCC_8775P) += gcc-sa8775p.o obj-$(CONFIG_SA_GPUCC_8775P) += gpucc-sa8775p.o obj-$(CONFIG_SC_GCC_7180) += gcc-sc7180.o diff --git a/drivers/clk/qcom/lpasscc-sc8280xp.c b/drivers/clk/qcom/lpasscc-sc8280xp.c new file mode 100644 index 000000000000..118320f8ee40 --- /dev/null +++ b/drivers/clk/qcom/lpasscc-sc8280xp.c @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2022, Linaro Limited + */ + +#include +#include +#include +#include +#include +#include +#include +#include "common.h" +#include "reset.h" + +static const struct qcom_reset_map lpass_tcsr_sc8280xp_resets[] = { + [LPASS_AUDIO_SWR_TX_CGCR] = { 0xc010, 1 }, +}; + +static struct regmap_config lpass_tcsr_sc8280xp_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .name = "lpass-tcsr", + .max_register = 0x12000, +}; + +static const struct qcom_cc_desc lpass_tcsr_reset_sc8280xp_desc = { + .config = &lpass_tcsr_sc8280xp_regmap_config, + .resets = lpass_tcsr_sc8280xp_resets, + .num_resets = ARRAY_SIZE(lpass_tcsr_sc8280xp_resets), +}; + +static const struct of_device_id lpasscc_sc8280xp_match_table[] = { + { + .compatible = "qcom,sc8280xp-lpasscc", + .data = &lpass_tcsr_reset_sc8280xp_desc, + }, + { } +}; +MODULE_DEVICE_TABLE(of, lpasscc_sc8280xp_match_table); + +static int lpasscc_sc8280xp_probe(struct platform_device *pdev) +{ + const struct qcom_cc_desc *desc = of_device_get_match_data(&pdev->dev); + + return qcom_cc_probe_by_index(pdev, 0, desc); +} + +static struct platform_driver lpasscc_sc8280xp_driver = { + .probe = lpasscc_sc8280xp_probe, + .driver = { + .name = "lpasscc-sc8280xp", + .of_match_table = lpasscc_sc8280xp_match_table, + }, +}; + +static int __init lpasscc_sc8280xp_init(void) +{ + return platform_driver_register(&lpasscc_sc8280xp_driver); +} +subsys_initcall(lpasscc_sc8280xp_init); + +static void __exit lpasscc_sc8280xp_exit(void) +{ + platform_driver_unregister(&lpasscc_sc8280xp_driver); +} +module_exit(lpasscc_sc8280xp_exit); + +MODULE_DESCRIPTION("QTI LPASSCC SC8280XP Driver"); +MODULE_LICENSE("GPL");