From patchwork Mon Aug 26 16:45:07 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jorge Ramirez-Ortiz X-Patchwork-Id: 11115073 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9100B174A for ; Mon, 26 Aug 2019 16:45:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6EEDC206BA for ; Mon, 26 Aug 2019 16:45:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="W+SxFN6U" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732610AbfHZQpR (ORCPT ); Mon, 26 Aug 2019 12:45:17 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:51372 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732728AbfHZQpR (ORCPT ); Mon, 26 Aug 2019 12:45:17 -0400 Received: by mail-wm1-f67.google.com with SMTP id k1so193780wmi.1 for ; Mon, 26 Aug 2019 09:45:16 -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=Cw8s/YHZ7PvnoGSE9VFOJmJ7OcBZMxXJRhzFX2CFS/0=; b=W+SxFN6UOnhMQyfKYi//GVhcYoZ3i/nD7OtSMRn5jp7t/KwVidshqc3GGhsEelYCS/ bka02/KN4t8bjYa/TDX+woe/EE53FiG8xCNCJvwzfyJjX7FRDDVKR6IUkcynrIanziVm p76IcKZrk8LC1mr63MLlRIkEqYk4vmRVho6v5i2kRiTuG4yujVFh4wKFmgiQHU0VpxHB 1y0UeMI0pHRjUzyCky6UKE34gzrxy20ZHC+dQpRgSuWOOwN7JLJcHCM6ld6z0ebFr0PK 5tArhVKZkmYvIXu9hIqEzuDAGjRFmo93BnY59OCELg3wfsFC49d839C8QBz689yKzLor XPbg== 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=Cw8s/YHZ7PvnoGSE9VFOJmJ7OcBZMxXJRhzFX2CFS/0=; b=LfMS/8DLb0FHsHsO51wOLSIo8TjA/UFC2fZsN5rDaiVBbyWcFYillTbCRca2aJzbCR ymzGq+5beLUshOMyQrs89MLFTATJ5c3podbLyIV+v2tbGrnuOf2DBgP3HkkHEKA0ZVBO S8vIlm9zmi1/CoMTYPT/iDpF3r1VIp0Kd10Bwsxg8xDqFYLEopHf4FQWfPDdqyA96Zux cMR8U0bwHLuIWh2dCia7XKZgdxEHlyLmjfwQverm2W9zEP2cHsA4ylqxCd0d0bjeOrLN PdhzYrJqVVlaiyDAqq/I+taP9ud8o+QhQFOr7jXAZ9HllF5eKSscuNqFPsjjG7o8I8sg 664Q== X-Gm-Message-State: APjAAAWBBIfQ0CHcX2k2QuyKcDTiqVRTm4r3lZj0uPh8km3uBLluEOa8 5GKwwKIDuOqlmpaqdw6Egzh6xw== X-Google-Smtp-Source: APXvYqypld9ggLNrMKVt7wpQNxzd+rJq3YngYT287XmHw/uezGkbsvjvHScJk81jHJJBt8TnrajMAA== X-Received: by 2002:a1c:494:: with SMTP id 142mr22155343wme.12.1566837915356; Mon, 26 Aug 2019 09:45:15 -0700 (PDT) Received: from localhost.localdomain (124.red-83-36-179.dynamicip.rima-tde.net. [83.36.179.124]) by smtp.gmail.com with ESMTPSA id l62sm77872wml.13.2019.08.26.09.45.14 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 26 Aug 2019 09:45:14 -0700 (PDT) From: Jorge Ramirez-Ortiz To: jorge.ramirez-ortiz@linaro.org, sboyd@kernel.org, agross@kernel.org, mturquette@baylibre.com Cc: bjorn.andersson@linaro.org, niklas.cassel@linaro.org, linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/5] clk: qcom: apcs-msm8916: get parent clock names from DT Date: Mon, 26 Aug 2019 18:45:07 +0200 Message-Id: <20190826164510.6425-2-jorge.ramirez-ortiz@linaro.org> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190826164510.6425-1-jorge.ramirez-ortiz@linaro.org> References: <20190826164510.6425-1-jorge.ramirez-ortiz@linaro.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 Allow accessing the parent clock names required for the driver operation by using the device tree node. This permits extending the driver to other platforms without having to modify its source code. For backwards compatibility leave previous values as default. Co-developed-by: Niklas Cassel Signed-off-by: Niklas Cassel Signed-off-by: Jorge Ramirez-Ortiz Reviewed-by: Bjorn Andersson --- drivers/clk/qcom/apcs-msm8916.c | 23 ++++++++++++++++++++--- 1 file changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/clk/qcom/apcs-msm8916.c b/drivers/clk/qcom/apcs-msm8916.c index a6c89a310b18..dd82eb1e5202 100644 --- a/drivers/clk/qcom/apcs-msm8916.c +++ b/drivers/clk/qcom/apcs-msm8916.c @@ -19,7 +19,7 @@ static const u32 gpll0_a53cc_map[] = { 4, 5 }; -static const char * const gpll0_a53cc[] = { +static const char *gpll0_a53cc[] = { "gpll0_vote", "a53pll", }; @@ -50,6 +50,8 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev) struct regmap *regmap; struct clk_init_data init = { }; int ret = -ENODEV; + const char *parents[2]; + int pll_index = 0; regmap = dev_get_regmap(parent, NULL); if (!regmap) { @@ -61,6 +63,16 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev) if (!a53cc) return -ENOMEM; + /* legacy bindings only defined the pll parent clock (index = 0) with no + * name; when both of the parents are specified in the bindings, the + * pll is the second one (index = 1). + */ + if (of_clk_parent_fill(parent->of_node, parents, 2) == 2) { + gpll0_a53cc[0] = parents[0]; + gpll0_a53cc[1] = parents[1]; + pll_index = 1; + } + init.name = "a53mux"; init.parent_names = gpll0_a53cc; init.num_parents = ARRAY_SIZE(gpll0_a53cc); @@ -76,10 +88,11 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev) a53cc->src_shift = 8; a53cc->parent_map = gpll0_a53cc_map; - a53cc->pclk = devm_clk_get(parent, NULL); + a53cc->pclk = of_clk_get(parent->of_node, pll_index); if (IS_ERR(a53cc->pclk)) { ret = PTR_ERR(a53cc->pclk); - dev_err(dev, "failed to get clk: %d\n", ret); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to get clk: %d\n", ret); return ret; } @@ -87,6 +100,7 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev) ret = clk_notifier_register(a53cc->pclk, &a53cc->clk_nb); if (ret) { dev_err(dev, "failed to register clock notifier: %d\n", ret); + clk_put(a53cc->pclk); return ret; } @@ -109,6 +123,8 @@ static int qcom_apcs_msm8916_clk_probe(struct platform_device *pdev) err: clk_notifier_unregister(a53cc->pclk, &a53cc->clk_nb); + clk_put(a53cc->pclk); + return ret; } @@ -117,6 +133,7 @@ static int qcom_apcs_msm8916_clk_remove(struct platform_device *pdev) struct clk_regmap_mux_div *a53cc = platform_get_drvdata(pdev); clk_notifier_unregister(a53cc->pclk, &a53cc->clk_nb); + clk_put(a53cc->pclk); return 0; }