From patchwork Sun Aug 29 13:12:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 12464035 X-Patchwork-Delegate: luiz.dentz@gmail.com Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E2459C432BE for ; Sun, 29 Aug 2021 13:14:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CCC2A6023E for ; Sun, 29 Aug 2021 13:14:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235686AbhH2NPO (ORCPT ); Sun, 29 Aug 2021 09:15:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47004 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235390AbhH2NOI (ORCPT ); Sun, 29 Aug 2021 09:14:08 -0400 Received: from mail-lf1-x136.google.com (mail-lf1-x136.google.com [IPv6:2a00:1450:4864:20::136]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2B761C0613D9 for ; Sun, 29 Aug 2021 06:13:16 -0700 (PDT) Received: by mail-lf1-x136.google.com with SMTP id j4so25260699lfg.9 for ; Sun, 29 Aug 2021 06:13:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=W90zCRw/gyIjKh5bN6AdA5a45jbpL+6W+rmSnj/xdRc=; b=MGtT4oebKOHyJUzHFk/GStnDRBlucvXQUdsvl3KqvG83GLCtg/sscD7aUZINgsWWxR mry9SHUjRz6j/EVknFswB9UJeqJc+HnyQYofSptX+47CH9Ql58haBaYJs90uxm4l2ATF HZVJLqaBdi40E8oRdmm2DKIQwzwImyoA5skuvtj15Bv9dhyyYqaJ9LbM8Eh6md+hckVJ ktYNRzdmui0t6n855ydf+ooRalLokWct1cGpCbqeYE3xHBu6sbMZC+6WmTmouvLOH/DQ VsHIFmJZWcKV4tYEZ1LMdwxFFSQaDPf3/4zqG4nB9OBSNwV1dkGh3RLs9xXTAFUsHS79 Styg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=W90zCRw/gyIjKh5bN6AdA5a45jbpL+6W+rmSnj/xdRc=; b=indtVq/Tw0Hyf/zIB3/fZUrrDKpX4sJGLcbTCWK1WsCar8MIKNk4Tn8Z6hxmt3lCT6 +5IskKTo5vjyzwu2xqeLVmJEmhWTgvZiPgdOlmjNmV1NQSQsaEm0RGyK52HjyhcCWiT/ YAeUV3AOZBXEoCt/TczbZ3XiK3xBf1agi/y+wZFT46jeupN51XcuFq8fBZHmWs1K+Rcz lQddl5hC94xGLUelDSAC1XyORM6RoCd8bbCm7R9b3P6BQHWrHaA/5bvm3KRP4QyylZ+p eD10IyddaMRSzqxjZcOwHJHbskjBvN4yPCZB0zK4o+9JXcKiphI4a9qDPIhLfAkVrz6+ xTHQ== X-Gm-Message-State: AOAM531hZKapI3LHbp//fbeQFMPyl/9zli1YgKRtFgb1gWAaT1BuWz33 jSp+ONREriKMdiMJ+Yja4FEirg== X-Google-Smtp-Source: ABdhPJz8ss1hZf/h7XEdWNe+VXrVLZ8dFiYzYa9JHOoN8i2WkbHCSfq9a7aQ5moet2JaOib5Pq53hA== X-Received: by 2002:a05:6512:21d1:: with SMTP id d17mr14594374lft.588.1630242794541; Sun, 29 Aug 2021 06:13:14 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id x13sm712503lfq.262.2021.08.29.06.13.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 29 Aug 2021 06:13:14 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Ulf Hansson , Marcel Holtmann , Johan Hedberg , Luiz Augusto von Dentz , Kalle Valo , "David S. Miller" , Jakub Kicinski , Stanimir Varbanov Cc: linux-arm-msm@vger.kernel.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-bluetooth@vger.kernel.org, ath10k@lists.infradead.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org Subject: [RFC v2 06/13] pwrseq: pwrseq_qca: implement fallback support Date: Sun, 29 Aug 2021 16:12:58 +0300 Message-Id: <20210829131305.534417-7-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210829131305.534417-1-dmitry.baryshkov@linaro.org> References: <20210829131305.534417-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-bluetooth@vger.kernel.org While we are waiting for all users of wcn399x-bt to be converted to the pwrseq declaration in the device tree, provide support for the pwrseq fallback: if the regulators are declared in the device itself, create pwrseq instance. This way the hci_qca driver doesn't have to cope with old and new dts bindings. Signed-off-by: Dmitry Baryshkov --- drivers/power/pwrseq/pwrseq_qca.c | 148 +++++++++++++++++++++++++++++- 1 file changed, 147 insertions(+), 1 deletion(-) diff --git a/drivers/power/pwrseq/pwrseq_qca.c b/drivers/power/pwrseq/pwrseq_qca.c index 7aa5f2d94039..d01f1ef4626b 100644 --- a/drivers/power/pwrseq/pwrseq_qca.c +++ b/drivers/power/pwrseq/pwrseq_qca.c @@ -11,9 +11,11 @@ #include #include #include +#include #include #include #include +#include #include /* susclk rate */ @@ -367,5 +369,149 @@ static struct platform_driver pwrseq_qca_driver = { }, }; -module_platform_driver(pwrseq_qca_driver); +struct pwrseq_qca_fallback { + struct pwrseq_qca_one qca_one; + struct pwrseq_qca_common common; +}; + +static const struct of_device_id pwrseq_qca_bt_of_match[] = { + { .compatible = "qcom,qca6174-bt" }, + { .compatible = "qcom,qca6390-bt", .data = &qca_soc_data_qca6390}, + { .compatible = "qcom,qca9377-bt" }, + { .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990 }, + { .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3990 }, + { .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998 }, + { .compatible = "qcom,wcn6750-bt", .data = &qca_soc_data_wcn6750 }, + { /* sentinel */ }, +}; + +static const struct qca_device_data qca_soc_data_wifi = { + .vregs = { + { "vdd-1.8-xo", 80000 }, + { "vdd-1.3-rfa", 300000 }, + { "vdd-3.3-ch0", 450000 }, + { "vdd-3.3-ch1", 450000 }, + }, + .num_vregs = 4, +}; + +static const struct of_device_id pwrseq_qca_wifi_of_match[] = { + { .compatible = "qcom,wcn3990-wifi", .data = &qca_soc_data_wifi }, + { /* sentinel */ } +}; + +static struct pwrseq * pwrseq_qca_fallback_get(struct device *dev) +{ + struct pwrseq_qca_fallback *fallback; + const struct of_device_id *match; + const struct qca_device_data *data; + struct gpio_desc *gpiod; + int ret; + + match = of_match_device(pwrseq_qca_bt_of_match, dev); + if (!match) + return ERR_PTR(-ENODEV); + + data = match->data; + if (!data) + data = &qca_soc_data_default; + + fallback = devm_kzalloc(dev, struct_size(fallback, common.vregs, data->num_vregs), GFP_KERNEL); + if (!data) + return ERR_PTR(-ENOMEM); + + fallback->qca_one.common = &fallback->common; + + ret = pwrseq_qca_common_init(dev, &fallback->common, data); + if (ret) + return ERR_PTR(ret); + + if (data->has_enable_gpios) { + gpiod = devm_gpiod_get(dev, "enable", GPIOD_OUT_LOW); + if (IS_ERR(gpiod)) + return ERR_PTR(dev_err_probe(dev, PTR_ERR(gpiod), "failed to acquire enable GPIO\n")); + fallback->qca_one.enable = gpiod; + } + + /* If we have no control over device's enablement, make sure that sleep clock is always running */ + if (!fallback->common.vddio || + !fallback->common.num_vregs || + !fallback->qca_one.enable) { + ret = clk_set_rate(fallback->common.susclk, SUSCLK_RATE_32KHZ); + if (ret) + return ERR_PTR(ret); + + ret = clk_prepare_enable(fallback->common.susclk); + if (ret) + return ERR_PTR(ret); + + ret = devm_add_action_or_reset(dev, pwrseq_qca_unprepare_susclk, &fallback->common); + if (ret) + return ERR_PTR(ret); + } + + return devm_pwrseq_create(dev, &pwrseq_qca_ops, &fallback->qca_one); +} + +static struct pwrseq * pwrseq_qca_fallback_get_bt(struct device *dev, const char *id) +{ + if (strcmp(id, "bt")) + return ERR_PTR(-ENODEV); + + return pwrseq_qca_fallback_get(dev); +} + +static struct pwrseq * pwrseq_qca_fallback_get_wifi(struct device *dev, const char *id) +{ + if (strcmp(id, "wifi")) + return ERR_PTR(-ENODEV); + + return pwrseq_qca_fallback_get(dev); +} + +static struct pwrseq_fallback pwrseq_qca_fallback_bt = { + .get = pwrseq_qca_fallback_get_bt, + .of_match_table = pwrseq_qca_bt_of_match, +}; + +static struct pwrseq_fallback pwrseq_qca_fallback_wifi = { + .get = pwrseq_qca_fallback_get_wifi, + .of_match_table = pwrseq_qca_wifi_of_match, +}; + +static int __init pwrseq_qca_init(void) +{ + int ret; + + ret = platform_driver_register(&pwrseq_qca_driver); + if (ret) + return ret; + + ret = pwrseq_fallback_register(&pwrseq_qca_fallback_bt); + if (ret) + goto err_bt; + + ret = pwrseq_fallback_register(&pwrseq_qca_fallback_wifi); + if (ret) + goto err_wifi; + + return 0; + +err_wifi: + pwrseq_fallback_unregister(&pwrseq_qca_fallback_bt); +err_bt: + platform_driver_unregister(&pwrseq_qca_driver); + + return ret; +} +module_init(pwrseq_qca_init); + +static void __exit pwrseq_qca_exit(void) +{ + pwrseq_fallback_unregister(&pwrseq_qca_fallback_wifi); + pwrseq_fallback_unregister(&pwrseq_qca_fallback_bt); + platform_driver_unregister(&pwrseq_qca_driver); +} +module_exit(pwrseq_qca_exit); + MODULE_LICENSE("GPL v2");