From mboxrd@z Thu Jan 1 00:00:00 1970 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A2631C6FA8E for ; Wed, 21 Sep 2022 23:04:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229624AbiIUXEz (ORCPT ); Wed, 21 Sep 2022 19:04:55 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49798 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229768AbiIUXEw (ORCPT ); Wed, 21 Sep 2022 19:04:52 -0400 Received: from mail-wr1-x42b.google.com (mail-wr1-x42b.google.com [IPv6:2a00:1450:4864:20::42b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E44358DF1; Wed, 21 Sep 2022 16:04:51 -0700 (PDT) Received: by mail-wr1-x42b.google.com with SMTP id n15so5686613wrq.5; Wed, 21 Sep 2022 16:04:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date; bh=GU0yOGtUWApdWw1YP5/oReOigylKqhYlPcMjFaOZ1a4=; b=hsXXyQG5xjFx5DcN9TQQwZWlZTE4u7OUFESRc0wRInYR3LEPF+MDvgZ245pLCkzHRP +qonf0wVh8hXgdzkSsgZm/QaamCwicfL6z3Zq5rfTds5+GDcDPOfeLcD1hmvZy3kcdUR CuC6zvUtpaxUZ+qpdAmVnuqJ+kEndUrrr+CxIY4qCRgWd44rTN6gkNVJ9f0LtPhoCUY3 LcHTIpg0cuxScmK17IMAXj/4+38W7ltTVCwuK90FGKCMmPgLf/qJ8goCpnC9lFSD6PUA bo4xgA5INzX0CfHo24NyfrG5Nusxn+TzLXuf9EEqM+DZso2qpHkETuBmLi5txl1pdru3 Zb+Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date; bh=GU0yOGtUWApdWw1YP5/oReOigylKqhYlPcMjFaOZ1a4=; b=IWFaRiWX154J1Edn1W7WAp1uw8y+zwfTiCycLki07Nkwh0cBG4PekFDFurcBGMGAcc N6j2gZyCq6qGDvjYcl9VYUnWW7GLzuBVBBJEWnL/2R68T0mFVLaa4Xnkb6r2vED0Qs0J 9L/lz66N+rT0ItuOx6qFTV7mXZbNfZsV9v7mNtMKXm1m8Z3xAnTmJDOm1l8N5WkFBKRm Qobaa9NBI1zW/8zImy4aq3uvec2umELF1QDPdya0hKSPHiQKHOhlUB42wjhCRJwZ3NtK 8ne8spySpACoN9Y8ZtwXwSqo9eJbhQKfK0Wd0bmKPl4lI0sBEf+V4yNTo92Qh3pachlv Hl1Q== X-Gm-Message-State: ACrzQf2Oqh2WE/U+dbyA9x+VQjdJvIvzgp4IVN16OJamWqQ7w/I5juK/ gPrWe9hLQl/YMY5XHGJmxaJbo7soUEg= X-Google-Smtp-Source: AMsMyM74SGVdqXrkhznuJEBRr++dBPlt1yRbIRAuKUafGwGHaPwT1fT01svctxYz5808sVX5Q6o2OQ== X-Received: by 2002:a5d:464e:0:b0:228:c179:6b0a with SMTP id j14-20020a5d464e000000b00228c1796b0amr214378wrs.402.1663801489659; Wed, 21 Sep 2022 16:04:49 -0700 (PDT) Received: from localhost.localdomain (cpc141996-chfd3-2-0-cust928.12-3.cable.virginm.net. [86.13.91.161]) by smtp.gmail.com with ESMTPSA id x12-20020adfffcc000000b0022ac672654dsm3519252wrs.58.2022.09.21.16.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Sep 2022 16:04:49 -0700 (PDT) From: Daniel Scally To: linux-acpi@vger.kernel.org, linux-clk@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: rafael@kernel.org, lenb@kernel.org, mturquette@baylibre.com, sboyd@kernel.org, hdegoede@redhat.com, markgross@kernel.org, robert.moore@intel.com Subject: [PATCH v3 3/5] platform/x86: int3472: Support multiple clock consumers Date: Thu, 22 Sep 2022 00:04:37 +0100 Message-Id: <20220921230439.768185-4-djrscally@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220921230439.768185-1-djrscally@gmail.com> References: <20220921230439.768185-1-djrscally@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org At present, the tps68470.c only supports a single clock consumer when passing platform data to the clock driver. In some devices multiple sensors depend on the clock provided by a single TPS68470 and so all need to be able to acquire the clock. Support passing multiple consumers as platform data. Reviewed-by: Hans de Goede Signed-off-by: Daniel Scally --- Changes since v2: - None drivers/clk/clk-tps68470.c | 13 ++-- drivers/platform/x86/intel/int3472/tps68470.c | 59 ++++++++++++++++--- include/linux/platform_data/tps68470.h | 7 ++- 3 files changed, 67 insertions(+), 12 deletions(-) diff --git a/drivers/clk/clk-tps68470.c b/drivers/clk/clk-tps68470.c index e5fbefd6ac2d..38f44b5b9b1b 100644 --- a/drivers/clk/clk-tps68470.c +++ b/drivers/clk/clk-tps68470.c @@ -200,7 +200,9 @@ static int tps68470_clk_probe(struct platform_device *pdev) .flags = CLK_SET_RATE_GATE, }; struct tps68470_clkdata *tps68470_clkdata; + struct tps68470_clk_consumer *consumer; int ret; + int i; tps68470_clkdata = devm_kzalloc(&pdev->dev, sizeof(*tps68470_clkdata), GFP_KERNEL); @@ -223,10 +225,13 @@ static int tps68470_clk_probe(struct platform_device *pdev) return ret; if (pdata) { - ret = devm_clk_hw_register_clkdev(&pdev->dev, - &tps68470_clkdata->clkout_hw, - pdata->consumer_con_id, - pdata->consumer_dev_name); + for (i = 0; i < pdata->n_consumers; i++) { + consumer = &pdata->consumers[i]; + ret = devm_clk_hw_register_clkdev(&pdev->dev, + &tps68470_clkdata->clkout_hw, + consumer->consumer_con_id, + consumer->consumer_dev_name); + } } return ret; diff --git a/drivers/platform/x86/intel/int3472/tps68470.c b/drivers/platform/x86/intel/int3472/tps68470.c index 22f61b47f9e5..8a684030933d 100644 --- a/drivers/platform/x86/intel/int3472/tps68470.c +++ b/drivers/platform/x86/intel/int3472/tps68470.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Author: Dan Scally */ +#include #include #include #include @@ -95,20 +96,64 @@ static int skl_int3472_tps68470_calc_type(struct acpi_device *adev) return DESIGNED_FOR_WINDOWS; } +/* + * Return the size of the flexible array member, because we'll need that later + * on to pass .pdata_size to cells. + */ +static int +skl_int3472_fill_clk_pdata(struct device *dev, struct tps68470_clk_platform_data **clk_pdata) +{ + struct acpi_device *adev = ACPI_COMPANION(dev); + struct acpi_device *consumer; + unsigned int n_consumers = 0; + const char *sensor_name; + unsigned int i = 0; + + for_each_acpi_consumer_dev(adev, consumer) + n_consumers++; + + if (!n_consumers) { + dev_err(dev, "INT3472 seems to have no dependents\n"); + return -ENODEV; + } + + *clk_pdata = devm_kzalloc(dev, struct_size(*clk_pdata, consumers, n_consumers), + GFP_KERNEL); + if (!*clk_pdata) + return -ENOMEM; + + (*clk_pdata)->n_consumers = n_consumers; + i = 0; + + for_each_acpi_consumer_dev(adev, consumer) { + sensor_name = devm_kasprintf(dev, GFP_KERNEL, I2C_DEV_NAME_FORMAT, + acpi_dev_name(consumer)); + if (!sensor_name) + return -ENOMEM; + + (*clk_pdata)->consumers[i].consumer_dev_name = sensor_name; + i++; + } + + acpi_dev_put(consumer); + + return n_consumers; +} + static int skl_int3472_tps68470_probe(struct i2c_client *client) { struct acpi_device *adev = ACPI_COMPANION(&client->dev); const struct int3472_tps68470_board_data *board_data; - struct tps68470_clk_platform_data clk_pdata = {}; + struct tps68470_clk_platform_data *clk_pdata; struct mfd_cell *cells; struct regmap *regmap; + int n_consumers; int device_type; int ret; - ret = skl_int3472_get_sensor_adev_and_name(&client->dev, NULL, - &clk_pdata.consumer_dev_name); - if (ret) - return ret; + n_consumers = skl_int3472_fill_clk_pdata(&client->dev, &clk_pdata); + if (n_consumers < 0) + return n_consumers; regmap = devm_regmap_init_i2c(client, &tps68470_regmap_config); if (IS_ERR(regmap)) { @@ -142,8 +187,8 @@ static int skl_int3472_tps68470_probe(struct i2c_client *client) * the clk + regulators must be ready when this happens. */ cells[0].name = "tps68470-clk"; - cells[0].platform_data = &clk_pdata; - cells[0].pdata_size = sizeof(clk_pdata); + cells[0].platform_data = clk_pdata; + cells[0].pdata_size = struct_size(clk_pdata, consumers, n_consumers); cells[1].name = "tps68470-regulator"; cells[1].platform_data = (void *)board_data->tps68470_regulator_pdata; cells[1].pdata_size = sizeof(struct tps68470_regulator_platform_data); diff --git a/include/linux/platform_data/tps68470.h b/include/linux/platform_data/tps68470.h index 126d082c3f2e..e605a2cab07f 100644 --- a/include/linux/platform_data/tps68470.h +++ b/include/linux/platform_data/tps68470.h @@ -27,9 +27,14 @@ struct tps68470_regulator_platform_data { const struct regulator_init_data *reg_init_data[TPS68470_NUM_REGULATORS]; }; -struct tps68470_clk_platform_data { +struct tps68470_clk_consumer { const char *consumer_dev_name; const char *consumer_con_id; }; +struct tps68470_clk_platform_data { + unsigned int n_consumers; + struct tps68470_clk_consumer consumers[]; +}; + #endif -- 2.25.1