From patchwork Tue Aug 13 13:09:46 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Govind Singh X-Patchwork-Id: 11092203 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6B2F61399 for ; Tue, 13 Aug 2019 13:10:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5C363284D4 for ; Tue, 13 Aug 2019 13:10:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50D262866C; Tue, 13 Aug 2019 13:10:13 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.7 required=2.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 842AC285E1 for ; Tue, 13 Aug 2019 13:10:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728970AbfHMNKM (ORCPT ); Tue, 13 Aug 2019 09:10:12 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:44104 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728941AbfHMNKL (ORCPT ); Tue, 13 Aug 2019 09:10:11 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id F297A60E7A; Tue, 13 Aug 2019 13:10:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1565701810; bh=spviT9Jg9zeKifEoOnjd5ABd27NfvOpCRln3gE4zq9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C072rqsGlzvsf5hykeTTIMzKnuscIIWUCd9HUfYLs8IJLh077ovQoGr+ZvDfGkfD9 gKaKWt+EeNHi3WN0ziDb0gTYeZ2eOmaBU+zVwweie5j50ZNNQJKOxtI/k8vHKOymqU 6U+ykaKrHysV00FGvacu2dxF/ifC6jLHLc4cVHDg= Received: from govinds-linux.qualcomm.com (blr-c-bdr-fw-01_globalnat_allzones-outside.qualcomm.com [103.229.19.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: govinds@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 97DE360DAA; Tue, 13 Aug 2019 13:10:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1565701806; bh=spviT9Jg9zeKifEoOnjd5ABd27NfvOpCRln3gE4zq9I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kBlu2Kf7L8CCFsf2UM4B/52PzJhDVZVuOxsUgJDH2X0qWxhEVgqPLTLs7JJEwqTAH XQCKbczH9IidpLcmKt8jaIQ3lSuxM83X76KNEkgQzYxUAU7wbwE1c0ZSxFDBLUqjvC +Tw/trWeVZbvhXjEAJGSKPRshG4AYLccvdQFovso= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 97DE360DAA Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=govinds@codeaurora.org From: Govind Singh To: sboyd@kernel.org Cc: bjorn.andersson@linaro.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-soc@vger.kernel.org, andy.gross@linaro.org, linux-remoteproc@vger.kernel.org, Govind Singh Subject: [v2 2/2] clk: qcom: Add Q6SSTOP clock controller for QCS404 Date: Tue, 13 Aug 2019 18:39:46 +0530 Message-Id: <20190813130946.16448-3-govinds@codeaurora.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190813130946.16448-1-govinds@codeaurora.org> References: <20190813130946.16448-1-govinds@codeaurora.org> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for the Q6SSTOP clock control used on qcs404 based devices. This would allow wcss remoteproc driver to control the required WCSS Q6SSTOP clock/reset controls to bring the subsystem out of reset and shutdown the WCSS Q6DSP. Signed-off-by: Govind Singh --- drivers/clk/qcom/Kconfig | 8 + drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/q6sstop-qcs404.c | 223 ++++++++++++++++++ .../dt-bindings/clock/qcom,q6sstopcc-qcs404.h | 18 ++ 4 files changed, 250 insertions(+) create mode 100644 drivers/clk/qcom/q6sstop-qcs404.c create mode 100644 include/dt-bindings/clock/qcom,q6sstopcc-qcs404.h diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index e1ff83cc361e..1b3c87a97521 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -250,6 +250,14 @@ config QCS_TURING_404 Support for the Turing Clock Controller on QCS404, provides clocks and resets for the Turing subsystem. +config QCS_Q6SSTOP_404 + tristate "QCS404 Q6SSTOP Clock Controller" + select QCS_GCC_404 + help + Support for the Q6SSTOP clock controller on QCS404 devices. + Say Y if you want to use the Q6SSTOP branch clocks of the WCSS clock + controller to reset the Q6SSTOP subsystem. + config SDM_GCC_845 tristate "SDM845 Global Clock Controller" select QCOM_GDSC diff --git a/drivers/clk/qcom/Makefile b/drivers/clk/qcom/Makefile index f0768fb1f037..086c053e0e03 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -43,6 +43,7 @@ obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o obj-$(CONFIG_QCS_TURING_404) += turingcc-qcs404.o +obj-$(CONFIG_QCS_Q6SSTOP_404) += q6sstop-qcs404.o obj-$(CONFIG_SDM_CAMCC_845) += camcc-sdm845.o obj-$(CONFIG_SDM_DISPCC_845) += dispcc-sdm845.o obj-$(CONFIG_SDM_GCC_660) += gcc-sdm660.o diff --git a/drivers/clk/qcom/q6sstop-qcs404.c b/drivers/clk/qcom/q6sstop-qcs404.c new file mode 100644 index 000000000000..b0f54a4c9365 --- /dev/null +++ b/drivers/clk/qcom/q6sstop-qcs404.c @@ -0,0 +1,223 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +#include "clk-regmap.h" +#include "clk-branch.h" +#include "common.h" +#include "reset.h" + +static struct clk_branch lcc_ahbfabric_cbc_clk = { + .halt_reg = 0x1b004, + .halt_check = BRANCH_HALT, + .clkr = { + .enable_reg = 0x1b004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_ahbfabric_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_ahbs_cbc_clk = { + .halt_reg = 0x22000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x22000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_ahbs_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_tcm_slave_cbc_clk = { + .halt_reg = 0x1c000, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1c000, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_tcm_slave_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_ahbm_cbc_clk = { + .halt_reg = 0x22004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x22004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_ahbm_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_axim_cbc_clk = { + .halt_reg = 0x1c004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1c004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_axim_cbc_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct clk_branch lcc_q6ss_bcr_sleep_clk = { + .halt_reg = 0x6004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x6004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_q6ss_bcr_sleep_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +/* TCSR clock */ +static struct clk_branch tcsr_lcc_csr_cbcr_clk = { + .halt_reg = 0x8008, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x8008, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "tcsr_lcc_csr_cbcr_clk", + .ops = &clk_branch2_ops, + }, + }, +}; + +static struct regmap_config q6sstop_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + +static struct clk_regmap *q6sstop_qcs404_clocks[] = { + [LCC_AHBFABRIC_CBC_CLK] = &lcc_ahbfabric_cbc_clk.clkr, + [LCC_Q6SS_AHBS_CBC_CLK] = &lcc_q6ss_ahbs_cbc_clk.clkr, + [LCC_Q6SS_TCM_SLAVE_CBC_CLK] = &lcc_q6ss_tcm_slave_cbc_clk.clkr, + [LCC_Q6SS_AHBM_CBC_CLK] = &lcc_q6ss_ahbm_cbc_clk.clkr, + [LCC_Q6SS_AXIM_CBC_CLK] = &lcc_q6ss_axim_cbc_clk.clkr, + [LCC_Q6SS_BCR_SLEEP_CLK] = &lcc_q6ss_bcr_sleep_clk.clkr, +}; + +static const struct qcom_reset_map q6sstop_qcs404_resets[] = { + [Q6SSTOP_BCR_RESET] = { 0x6000 }, +}; + +static const struct qcom_cc_desc q6sstop_qcs404_desc = { + .config = &q6sstop_regmap_config, + .clks = q6sstop_qcs404_clocks, + .num_clks = ARRAY_SIZE(q6sstop_qcs404_clocks), + .resets = q6sstop_qcs404_resets, + .num_resets = ARRAY_SIZE(q6sstop_qcs404_resets), +}; + +static struct clk_regmap *tcsr_qcs404_clocks[] = { + [TCSR_Q6SS_LCC_CBCR_CLK] = &tcsr_lcc_csr_cbcr_clk.clkr, +}; + +static const struct qcom_cc_desc tcsr_qcs404_desc = { + .config = &q6sstop_regmap_config, + .clks = tcsr_qcs404_clocks, + .num_clks = ARRAY_SIZE(tcsr_qcs404_clocks), +}; + +static const struct of_device_id q6sstopcc_qcs404_match_table[] = { + { .compatible = "qcom,qcs404-q6sstopcc" }, + { } +}; +MODULE_DEVICE_TABLE(of, q6sstopcc_qcs404_match_table); + +static int q6sstopcc_qcs404_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, NULL); + if (ret < 0) { + dev_err(&pdev->dev, "failed to acquire iface clock\n"); + goto destroy_pm_clk; + } + + q6sstop_regmap_config.name = "q6sstop_tcsr"; + desc = &tcsr_qcs404_desc; + + ret = qcom_cc_probe_by_index(pdev, 1, desc); + if (ret) + goto destroy_pm_clk; + + q6sstop_regmap_config.name = "q6sstop_cc"; + desc = &q6sstop_qcs404_desc; + + ret = qcom_cc_probe_by_index(pdev, 0, 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 int q6sstopcc_qcs404_remove(struct platform_device *pdev) +{ + pm_clk_destroy(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + return 0; +} + +static const struct dev_pm_ops q6sstopcc_pm_ops = { + SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL) +}; + +static struct platform_driver q6sstopcc_qcs404_driver = { + .probe = q6sstopcc_qcs404_probe, + .remove = q6sstopcc_qcs404_remove, + .driver = { + .name = "qcs404-q6sstopcc", + .of_match_table = q6sstopcc_qcs404_match_table, + .pm = &q6sstopcc_pm_ops, + }, +}; + +module_platform_driver(q6sstopcc_qcs404_driver); + +MODULE_DESCRIPTION("QTI QCS404 Q6SSTOP Clock Controller Driver"); +MODULE_LICENSE("GPL v2"); diff --git a/include/dt-bindings/clock/qcom,q6sstopcc-qcs404.h b/include/dt-bindings/clock/qcom,q6sstopcc-qcs404.h new file mode 100644 index 000000000000..c6f5290f0914 --- /dev/null +++ b/include/dt-bindings/clock/qcom,q6sstopcc-qcs404.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#ifndef _DT_BINDINGS_CLK_Q6SSTOP_QCS404_H +#define _DT_BINDINGS_CLK_Q6SSTOP_QCS404_H + +#define LCC_AHBFABRIC_CBC_CLK 0 +#define LCC_Q6SS_AHBS_CBC_CLK 1 +#define LCC_Q6SS_TCM_SLAVE_CBC_CLK 2 +#define LCC_Q6SS_AHBM_CBC_CLK 3 +#define LCC_Q6SS_AXIM_CBC_CLK 4 +#define LCC_Q6SS_BCR_SLEEP_CLK 5 +#define TCSR_Q6SS_LCC_CBCR_CLK 6 + +#define Q6SSTOP_BCR_RESET 1 +#endif