From patchwork Wed Oct 6 01:40:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Taniya Das X-Patchwork-Id: 12538339 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 68097C433F5 for ; Wed, 6 Oct 2021 01:40:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4FF4A61350 for ; Wed, 6 Oct 2021 01:40:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237252AbhJFBmj (ORCPT ); Tue, 5 Oct 2021 21:42:39 -0400 Received: from so254-9.mailgun.net ([198.61.254.9]:38231 "EHLO so254-9.mailgun.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237195AbhJFBmj (ORCPT ); Tue, 5 Oct 2021 21:42:39 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1633484448; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=gKc8UBzWBnu5NoWp5EuXhlx8DnpxTw4TSDasUwh0oc8=; b=Uz9IHXaoDOT+gec+izXtxOin5Fm/SKS9R/5qknW308C8pzztfy3IkyiVS2XRtJt25QojBArp RebRxeZqtMYlmD45GCdFXNhOz+0TiTPoVJYXTwz/2ODfy6GEw8j/3AJNTr4s13/NitgoxgiQ IpKqy+7bDXQp4m7kok5jR4QifK0= X-Mailgun-Sending-Ip: 198.61.254.9 X-Mailgun-Sid: WyI4MzlhZiIsICJsaW51eC1jbGtAdmdlci5rZXJuZWwub3JnIiwgImJlOWU0YSJd Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n05.prod.us-east-1.postgun.com with SMTP id 615cfe97b8ab9916b39cdbb2 (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Wed, 06 Oct 2021 01:40:39 GMT Sender: tdas=codeaurora.org@mg.codeaurora.org Received: by smtp.codeaurora.org (Postfix, from userid 1001) id CFF82C43619; Wed, 6 Oct 2021 01:40:38 +0000 (UTC) Received: from tdas-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: tdas) by smtp.codeaurora.org (Postfix) with ESMTPSA id 3628CC4338F; Wed, 6 Oct 2021 01:40:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 smtp.codeaurora.org 3628CC4338F Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=fail smtp.mailfrom=codeaurora.org From: Taniya Das To: Stephen Boyd , =?utf-8?q?Michael_Turquette_=C2=A0?= Cc: Rajendra Nayak , linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, robh@kernel.org, robh+dt@kernel.org, Taniya Das Subject: [PATCH 3/3] clk: qcom: Add lpass clock controller driver for SC7280 Date: Wed, 6 Oct 2021 07:10:16 +0530 Message-Id: <1633484416-27852-3-git-send-email-tdas@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1633484416-27852-1-git-send-email-tdas@codeaurora.org> References: <1633484416-27852-1-git-send-email-tdas@codeaurora.org> Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org Add support for the lpass clock controller found on SC7280 based devices. This would allow lpass peripheral loader drivers to control the clocks to bring the subsystem out of reset. Signed-off-by: Taniya Das --- drivers/clk/qcom/Kconfig | 8 ++ drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/lpasscc-sc7280.c | 216 ++++++++++++++++++++++++++++++++++++++ 3 files changed, 225 insertions(+) create mode 100644 drivers/clk/qcom/lpasscc-sc7280.c -- Qualcomm INDIA, on behalf of Qualcomm Innovation Center, Inc.is a member of the Code Aurora Forum, hosted by the Linux Foundation. diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index f9c36a1..622cde4 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -401,6 +401,14 @@ config SC_GPUCC_7280 Say Y if you want to support graphics controller devices and functionality such as 3D graphics. +config SC_LPASSCC_7280 + tristate "SC7280 Low Power Audio Subsystem (LPASS) Clock Controller" + select SC_GCC_7280 + help + Support for the LPASS clock controller on SC7280 devices. + Say Y if you want to use the LPASS branch clocks of the LPASS clock + controller to reset the LPASS subsystem. + config SC_LPASS_CORECC_7180 tristate "SC7180 LPASS Core Clock Controller" select SC_GCC_7180 diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index 9825ef8..8b9b01e 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -65,6 +65,7 @@ obj-$(CONFIG_SC_GCC_7280) += gcc-sc7280.o obj-$(CONFIG_SC_GCC_8180X) += gcc-sc8180x.o obj-$(CONFIG_SC_GPUCC_7180) += gpucc-sc7180.o obj-$(CONFIG_SC_GPUCC_7280) += gpucc-sc7280.o +obj-$(CONFIG_SC_LPASSCC_7280) += lpasscc-sc7280.o obj-$(CONFIG_SC_LPASS_CORECC_7180) += lpasscorecc-sc7180.o obj-$(CONFIG_SC_MSS_7180) += mss-sc7180.o obj-$(CONFIG_SC_VIDEOCC_7180) += videocc-sc7180.o diff --git a/drivers/clk/qcom/lpasscc-sc7280.c b/drivers/clk/qcom/lpasscc-sc7280.c new file mode 100644 index 0000000..89f1ad6 --- /dev/null +++ b/drivers/clk/qcom/lpasscc-sc7280.c @@ -0,0 +1,216 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2021, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include + +#include + +#include "clk-regmap.h" +#include "clk-branch.h" +#include "common.h" + +static struct clk_branch lpass_q6ss_ahbm_clk = { + .halt_reg = 0x1c, + .halt_check = BRANCH_HALT, + .clkr = { + .enable_reg = 0x1c, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_q6ss_ahbm_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_q6ss_ahbs_clk = { + .halt_reg = 0x20, + .halt_check = BRANCH_HALT_VOTED, + .clkr = { + .enable_reg = 0x20, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_q6ss_ahbs_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_top_cc_lpi_q6_axim_hs_clk = { + .halt_reg = 0x0, + .halt_check = BRANCH_HALT, + .clkr = { + .enable_reg = 0x0, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_top_cc_lpi_q6_axim_hs_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_qdsp6ss_core_clk = { + .halt_reg = 0x20, + /* CLK_OFF would not toggle until LPASS is out of reset */ + .halt_check = BRANCH_HALT_SKIP, + .clkr = { + .enable_reg = 0x20, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_qdsp6ss_core_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_qdsp6ss_xo_clk = { + .halt_reg = 0x38, + /* CLK_OFF would not toggle until LPASS is out of reset */ + .halt_check = BRANCH_HALT_SKIP, + .clkr = { + .enable_reg = 0x38, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_qdsp6ss_xo_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lpass_qdsp6ss_sleep_clk = { + .halt_reg = 0x3c, + /* CLK_OFF would not toggle until LPASS is out of reset */ + .halt_check = BRANCH_HALT_SKIP, + .clkr = { + .enable_reg = 0x3c, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lpass_qdsp6ss_sleep_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct regmap_config lpass_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + +static struct clk_regmap *lpass_cc_sc7280_clocks[] = { + [LPASS_Q6SS_AHBM_CLK] = &lpass_q6ss_ahbm_clk.clkr, + [LPASS_Q6SS_AHBS_CLK] = &lpass_q6ss_ahbs_clk.clkr, +}; + +static const struct qcom_cc_desc lpass_cc_sc7280_desc = { + .config = &lpass_regmap_config, + .clks = lpass_cc_sc7280_clocks, + .num_clks = ARRAY_SIZE(lpass_cc_sc7280_clocks), +}; + +static struct clk_regmap *lpass_cc_top_sc7280_clocks[] = { + [LPASS_TOP_CC_LPI_Q6_AXIM_HS_CLK] = + &lpass_top_cc_lpi_q6_axim_hs_clk.clkr, +}; + +static const struct qcom_cc_desc lpass_cc_top_sc7280_desc = { + .config = &lpass_regmap_config, + .clks = lpass_cc_top_sc7280_clocks, + .num_clks = ARRAY_SIZE(lpass_cc_top_sc7280_clocks), +}; + +static struct clk_regmap *lpass_qdsp6ss_sc7280_clocks[] = { + [LPASS_QDSP6SS_XO_CLK] = &lpass_qdsp6ss_xo_clk.clkr, + [LPASS_QDSP6SS_SLEEP_CLK] = &lpass_qdsp6ss_sleep_clk.clkr, + [LPASS_QDSP6SS_CORE_CLK] = &lpass_qdsp6ss_core_clk.clkr, +}; + +static const struct qcom_cc_desc lpass_qdsp6ss_sc7280_desc = { + .config = &lpass_regmap_config, + .clks = lpass_qdsp6ss_sc7280_clocks, + .num_clks = ARRAY_SIZE(lpass_qdsp6ss_sc7280_clocks), +}; + +static int lpass_cc_sc7280_probe(struct platform_device *pdev) +{ + const struct qcom_cc_desc *desc; + int ret; + + pm_runtime_enable(&pdev->dev); + ret = pm_clk_create(&pdev->dev); + if (ret) + goto disable_pm_runtime; + + ret = pm_clk_add(&pdev->dev, "iface"); + if (ret < 0) { + dev_err(&pdev->dev, "failed to acquire iface clock\n"); + goto destroy_pm_clk; + } + + lpass_regmap_config.name = "qdsp6ss"; + desc = &lpass_qdsp6ss_sc7280_desc; + + ret = qcom_cc_probe_by_index(pdev, 0, desc); + if (ret) + goto destroy_pm_clk; + + lpass_regmap_config.name = "top_cc"; + desc = &lpass_cc_top_sc7280_desc; + + ret = qcom_cc_probe_by_index(pdev, 1, desc); + if (ret) + goto destroy_pm_clk; + + lpass_regmap_config.name = "cc"; + desc = &lpass_cc_sc7280_desc; + + ret = qcom_cc_probe_by_index(pdev, 2, desc); + if (ret) + goto destroy_pm_clk; + + return 0; + +destroy_pm_clk: + pm_clk_destroy(&pdev->dev); + +disable_pm_runtime: + pm_runtime_disable(&pdev->dev); + + return ret; +} + +static const struct of_device_id lpass_cc_sc7280_match_table[] = { + { .compatible = "qcom,sc7280-lpasscc" }, + { } +}; +MODULE_DEVICE_TABLE(of, lpass_cc_sc7280_match_table); + +static struct platform_driver lpass_cc_sc7280_driver = { + .probe = lpass_cc_sc7280_probe, + .driver = { + .name = "sc7280-lpasscc", + .of_match_table = lpass_cc_sc7280_match_table, + }, +}; + +static int __init lpass_cc_sc7280_init(void) +{ + return platform_driver_register(&lpass_cc_sc7280_driver); +} +subsys_initcall(lpass_cc_sc7280_init); + +static void __exit lpass_cc_sc7280_exit(void) +{ + platform_driver_unregister(&lpass_cc_sc7280_driver); +} +module_exit(lpass_cc_sc7280_exit); + +MODULE_DESCRIPTION("QTI LPASS_CC SC7280 Driver"); +MODULE_LICENSE("GPL v2");