From patchwork Sat Dec 15 10:35:52 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Govind Singh X-Patchwork-Id: 10732127 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 D20F5746 for ; Sat, 15 Dec 2018 10:36:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BE8DD2BBF5 for ; Sat, 15 Dec 2018 10:36:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id AFDDA2BCBF; Sat, 15 Dec 2018 10:36:22 +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 EDFA52BBF5 for ; Sat, 15 Dec 2018 10:36:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730147AbeLOKgS (ORCPT ); Sat, 15 Dec 2018 05:36:18 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:45212 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729671AbeLOKgS (ORCPT ); Sat, 15 Dec 2018 05:36:18 -0500 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id B923E60863; Sat, 15 Dec 2018 10:36:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1544870176; bh=2vV9O6X7X1l/x3txVSZQsx/35yOy4ubE04agsedhZoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z1dGWblhyL5Ntv3aZFExMAOSH+QKZnXmowkmYsUbb/icmRj/m4vpnYfTJrxSrsdcN 8uFiGqKm+6Sjf5wket1OMPC7fconiZDwnSZHCq97TbbRDcUk5X1tNBwAPyzE1ArgOM ZxELKstCZj77+7iRQbGgQJgCuV+HIE+4YJ1rW1Ho= 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 13DEA6081E; Sat, 15 Dec 2018 10:36:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1544870174; bh=2vV9O6X7X1l/x3txVSZQsx/35yOy4ubE04agsedhZoo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=KOtkSYwU7/YMCS1IUtsQLNzMd39vXqjA1kkYsLXXPmOS8GGJ4DZN26rWS7GfsiFuU uCCIm/aAlps01sdVmNPfEg8+P10OSo8YvVK8AUU0P716STqEhj8962h3Fan8muUctm e4SbQ22KJ/1u322Eo/ix5VTP27fGZRD0Mw2Umeqs= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 13DEA6081E 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: bjorn.andersson@linaro.org, linux-remoteproc@vger.kernel.org, sboyd@kernel.org Cc: linux-clk@vger.kernel.org, sricharan@codeaurora.org, sibis@codeaurora.org, linux-arm-msm@vger.kernel.org, andy.gross@linaro.org, david.brown@linaro.org, linux-soc@vger.kernel.org, devicetree@vger.kernel.org, Govind Singh Subject: [PATCH v3 2/7] clk: qcom: Add WCSS Q6DSP clock controller for QCS404 Date: Sat, 15 Dec 2018 16:05:52 +0530 Message-Id: <20181215103557.2748-3-govinds@codeaurora.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181215103557.2748-1-govinds@codeaurora.org> References: <20181215103557.2748-1-govinds@codeaurora.org> MIME-Version: 1.0 Sender: linux-remoteproc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for the WCSS QDSP clock control used on qcs404 based devices. This would allow wcss remoteproc driver to control the required WCSS QDSP clock/reset controls to bring the subsystem out of reset and shutdown the WCSS QDSP. Signed-off-by: Govind Singh --- drivers/clk/qcom/Kconfig | 9 + drivers/clk/qcom/Makefile | 1 + drivers/clk/qcom/wcsscc-qcs404.c | 297 +++++++++++++++++++++++++++++++ 3 files changed, 307 insertions(+) create mode 100644 drivers/clk/qcom/wcsscc-qcs404.c diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig index 9fe28b9ceba8..84acc7718691 100644 --- a/drivers/clk/qcom/Kconfig +++ b/drivers/clk/qcom/Kconfig @@ -222,6 +222,15 @@ config QCS_GCC_404 Say Y if you want to use multimedia devices or peripheral devices such as UART, SPI, I2C, USB, SD/eMMC, PCIe etc. +config QCS_WCSSCC_404 + tristate "QCS404 WCSS Clock Controller" + depends on COMMON_CLK_QCOM + select QCS_GCC_404 + help + Support for the WCSS clock controller on QCS404 devices. + Say Y if you want to use the WCSS branch clocks of the WCSS clock + controller to reset the WCSS 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 108c27d648a2..44563cb10cd5 100644 --- a/drivers/clk/qcom/Makefile +++ b/drivers/clk/qcom/Makefile @@ -38,6 +38,7 @@ obj-$(CONFIG_QCOM_CLK_RPMH) += clk-rpmh.o obj-$(CONFIG_QCOM_CLK_SMD_RPM) += clk-smd-rpm.o obj-$(CONFIG_SDM_DISPCC_845) += dispcc-sdm845.o obj-$(CONFIG_QCS_GCC_404) += gcc-qcs404.o +obj-$(CONFIG_QCS_WCSSCC_404) += wcsscc-qcs404.o obj-$(CONFIG_SDM_GCC_845) += gcc-sdm845.o obj-$(CONFIG_SDM_VIDEOCC_845) += videocc-sdm845.o obj-$(CONFIG_SPMI_PMIC_CLKDIV) += clk-spmi-pmic-div.o diff --git a/drivers/clk/qcom/wcsscc-qcs404.c b/drivers/clk/qcom/wcsscc-qcs404.c new file mode 100644 index 000000000000..bd694ef1b6ac --- /dev/null +++ b/drivers/clk/qcom/wcsscc-qcs404.c @@ -0,0 +1,297 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018, The Linux Foundation. All rights reserved. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "clk-regmap.h" +#include "clk-branch.h" +#include "common.h" +#include "reset.h" + +/* Q6SSTOP clocks. These clocks are voted + * during by remoteproc client when loaded from + * user space, soc hang is seen when CCF turns + * off unused clocks. As a temp solution use + * CLK_IGNORE_UNUSED flags which prevent these + * clocks from being gated during bootup. + */ +static struct clk_branch lcc_ahbfabric_cbc_clk = { + .halt_reg = 0x1b004, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x1b004, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "lcc_ahbfabric_cbc_clk", + .ops = &clk_branch2_ops, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +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, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +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, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +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, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +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, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +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, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +/* TCSR clock */ +static struct clk_branch wcss_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 = "wcss_lcc_csr_cbcr_clk", + .ops = &clk_branch2_ops, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +/* Q6SSTOP_QDSP6SS clock */ +static struct clk_branch q6ss_xo_clk = { + .halt_reg = 0x38, + /* CLK_OFF would not toggle until WCSS is out of reset */ + .halt_check = BRANCH_HALT_SKIP, + .clkr = { + .enable_reg = 0x38, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "q6ss_xo_clk", + .ops = &clk_branch2_ops, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +static struct clk_branch q6ss_slp_clk = { + .halt_reg = 0x3c, + /* CLK_OFF would not toggle until WCSS is out of reset */ + .halt_check = BRANCH_HALT_SKIP, + .clkr = { + .enable_reg = 0x3c, + .enable_mask = BIT(0), + .hw.init = &(struct clk_init_data){ + .name = "q6ss_slp_clk", + .ops = &clk_branch2_ops, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +static struct clk_branch q6sstop_q6ss_gfmux_clk_src = { + .halt_reg = 0x20, + .halt_check = BRANCH_VOTED, + .clkr = { + .enable_reg = 0x20, + .enable_mask = BIT(1) | BIT(3) | BIT(8), + .hw.init = &(struct clk_init_data){ + .name = "q6sstop_q6ss_gfmux_clk_src", + .ops = &clk_branch2_ops, + .flags = CLK_IGNORE_UNUSED, + }, + }, +}; + +static struct regmap_config wcss_regmap_config = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .fast_io = true, +}; + +static struct clk_regmap *wcss_q6sstop_qcs404_clocks[] = { + [WCSS_AHBFABRIC_CBCR_CLK] = &lcc_ahbfabric_cbc_clk.clkr, + [WCSS_AHBS_CBCR_CLK] = &lcc_q6ss_ahbs_cbc_clk.clkr, + [WCSS_TCM_CBCR_CLK] = &lcc_q6ss_tcm_slave_cbc_clk.clkr, + [WCSS_AHBM_CBCR_CLK] = &lcc_q6ss_ahbm_cbc_clk.clkr, + [WCSS_AXIM_CBCR_CLK] = &lcc_q6ss_axim_cbc_clk.clkr, + [WCSS_BCR_CBCR_CLK] = &lcc_q6ss_bcr_sleep_clk.clkr, +}; + +static const struct qcom_reset_map qdsp6ss_qcs404_resets[] = { + [Q6SSTOP_QDSP6SS_RESET] = {0x14, 0}, + [Q6SSTOP_QDSP6SS_CORE_RESET] = {0x14, 1}, + [Q6SSTOP_QDSP6SS_BUS_RESET] = {0x14, 2}, +}; + +static const struct qcom_reset_map q6sstop_qcs404_resets[] = { + [Q6SSTOP_BCR_RESET] = {0x6000}, +}; + +static const struct qcom_cc_desc wcss_q6sstop_qcs404_desc = { + .config = &wcss_regmap_config, + .clks = wcss_q6sstop_qcs404_clocks, + .num_clks = ARRAY_SIZE(wcss_q6sstop_qcs404_clocks), + .resets = q6sstop_qcs404_resets, + .num_resets = ARRAY_SIZE(q6sstop_qcs404_resets), +}; + +static struct clk_regmap *wcnss_tcsr_qcs404_clocks[] = { + [WCSS_LCC_CBCR_CLK] = &wcss_lcc_csr_cbcr_clk.clkr, +}; + +static const struct qcom_cc_desc wcnss_tcsr_qcs404_desc = { + .config = &wcss_regmap_config, + .clks = wcnss_tcsr_qcs404_clocks, + .num_clks = ARRAY_SIZE(wcnss_tcsr_qcs404_clocks), +}; + +static struct clk_regmap *wcnss_qdsp6ss_qcs404_clocks[] = { + [WCSS_QDSP6SS_XO_CBCR_CLK] = &q6ss_xo_clk.clkr, + [WCSS_QDSP6SS_SLEEP_CBCR_CLK] = &q6ss_slp_clk.clkr, + [WCSS_QDSP6SS_GFMMUX_CLK] = &q6sstop_q6ss_gfmux_clk_src.clkr, +}; + +static const struct qcom_cc_desc wcnss_qdsp6ss_qcs404_desc = { + .config = &wcss_regmap_config, + .clks = wcnss_qdsp6ss_qcs404_clocks, + .num_clks = ARRAY_SIZE(wcnss_qdsp6ss_qcs404_clocks), + .resets = qdsp6ss_qcs404_resets, + .num_resets = ARRAY_SIZE(qdsp6ss_qcs404_resets), +}; + +static int wcss_clocks_qcs404_probe(struct platform_device *pdev, int index, + const struct qcom_cc_desc *desc) +{ + struct regmap *regmap; + struct resource *res; + void __iomem *base; + + res = platform_get_resource(pdev, IORESOURCE_MEM, index); + base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(base)) + return -ENOMEM; + + regmap = devm_regmap_init_mmio(&pdev->dev, base, desc->config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return qcom_cc_really_probe(pdev, desc, regmap); +} + +static const struct of_device_id wcss_cc_qcs404_match_table[] = { + { .compatible = "qcom,qcs404-wcsscc" }, + { } +}; +MODULE_DEVICE_TABLE(of, wcss_cc_qcs404_match_table); + +static int wcss_cc_qcs404_probe(struct platform_device *pdev) +{ + const struct qcom_cc_desc *desc; + int ret; + + wcss_regmap_config.name = "wcss_q6sstop"; + desc = &wcss_q6sstop_qcs404_desc; + + ret = wcss_clocks_qcs404_probe(pdev, 0, desc); + if (ret) + return ret; + + wcss_regmap_config.name = "wcnss_tcsr"; + desc = &wcnss_tcsr_qcs404_desc; + + ret = wcss_clocks_qcs404_probe(pdev, 1, desc); + if (ret) + return ret; + + wcss_regmap_config.name = "wcss_qdsp6ss"; + desc = &wcnss_qdsp6ss_qcs404_desc; + + return wcss_clocks_qcs404_probe(pdev, 2, desc); +} + +static struct platform_driver wcss_cc_qcs404_driver = { + .probe = wcss_cc_qcs404_probe, + .driver = { + .name = "qcs404-wcsscc", + .of_match_table = wcss_cc_qcs404_match_table, + }, +}; + +static int __init wcss_cc_qcs404_init(void) +{ + return platform_driver_register(&wcss_cc_qcs404_driver); +} +subsys_initcall(wcss_cc_qcs404_init); + +MODULE_LICENSE("GPL v2");