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 X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 9D778C32751 for ; Wed, 31 Jul 2019 15:36:21 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6272B206A3 for ; Wed, 31 Jul 2019 15:36:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Y0X9alEI"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=baylibre-com.20150623.gappssmtp.com header.i=@baylibre-com.20150623.gappssmtp.com header.b="muX7/WmA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6272B206A3 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=0Fy1LIF4dFvz3SfJAv3L5R9u3fGKIsILFA7LP6RRukU=; b=Y0X9alEIHXrRoTYEQpl5k24JuV fNcq0L/IOiVfqc3XZLEtdwqT1s1Kpp9Ug+NyDnqBi+QFJza4U779ppeUzEtm/cqW2uQd2dVn7RIWV ysPXDTngl9wHlXiBEV5kpYep0ojK87GFnJRG2UxQ1l8O2KeB1AyOsCvBLcciUUcfuFesUg0dP25mb 8g+y9DCqqJEZykgcB+sSChY/jug4ZOigdx5bqBJb5nCG/RXTSzan085wWzQWA/8ikgIlioDeYXe8S ecyKRLwIiYXWlsv9/2aWLwt38OoZB1f6Iyqrw/6gdQkrg/+YUPruXUVqYy9/PZXLWE5qpGP8wpMBv kV7HqEcA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hsqeG-0006CB-U4; Wed, 31 Jul 2019 15:36:16 +0000 Received: from mail-wm1-x341.google.com ([2a00:1450:4864:20::341]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hsqdc-0005Oe-0U for linux-amlogic@lists.infradead.org; Wed, 31 Jul 2019 15:35:38 +0000 Received: by mail-wm1-x341.google.com with SMTP id x15so61331302wmj.3 for ; Wed, 31 Jul 2019 08:35:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=1miTjMLEBFhjaEGHFcmdp4ZDezRgvKVj8txhZN/dP18=; b=muX7/WmADJKfB5l74on9hlhlQYZ9WldGUTv4Y+XnJy+Ldins/xtXYz6kWQnbr44FK3 he1zP2688Gy2HbUd3rUinyKpzKYaqRUOXDqxK+H3foUY3/9cbz5zwvNSOopFO/M1sF2X vPZ0sHc/pNHXHKWD0XDEkXivGkoQNyEjOhG8UU/qUDgU/LX1DoPDfgOkE4IDRWiqBouY OSj/17mGQCmOaEa78dSUe1mP7acR1S4ExdHcffKjC3AsY/Tk4H3cWLy1FGCzvdfVtxUI ioiZ6+4iJ/yW2QLLByUA2Ur9HQow0GoFx7Ee9bU3R2tU2mTZ0rIbVcAy/2XmWgbXmTGV XmQA== 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; bh=1miTjMLEBFhjaEGHFcmdp4ZDezRgvKVj8txhZN/dP18=; b=C9LN+DM+kc0mnm5ujfQqX3v1C0cFj+XwHKj++IGSW3m0fBXAc7qx60Mf4sI1a77JwV h0DCO7wmEpkWguyM9yEktEs9Lpx9o9npQm7O3xlP6wnOntS/wRvGFLHwJNrwEm4p/8Eh 9HYjeit/7V6JRyD+abgu3GG2/oaqqOUzsggj3e5MYakMA2TnSkwwwF9xYpsWAIuOoJ8y ztgXpV26EvBit4D0BcKaAILIAvRS+h1RjbHQXDTFFk2htHhiAJWqOFSeuU1I7jFmJU7q e+85fqGSp9OavMFTTMpfGPQyZWk5JAT85gFu9v8UF173t6+QXnF+UEfjkBk4q6CgMHb8 XtgQ== X-Gm-Message-State: APjAAAXLtTVQVzRsHGH7tWAeFHupBDozYtIjsJcmtbn+ZzKxqBDSXqqq M9rw42pBt25mLZdYOxkw0zaVvA== X-Google-Smtp-Source: APXvYqxEX67Us6Odn63JCIdoOo88FH7YS/4S/YMlTB0dVBphugeUbgxZgvMSB81fWFEXVzsJGTfiBw== X-Received: by 2002:a1c:cf0b:: with SMTP id f11mr115010676wmg.138.1564587334017; Wed, 31 Jul 2019 08:35:34 -0700 (PDT) Received: from glaroque-ThinkPad-T480.baylibre.local (lmontsouris-657-1-212-31.w90-63.abo.wanadoo.fr. [90.63.244.31]) by smtp.gmail.com with ESMTPSA id i13sm62834396wrr.73.2019.07.31.08.35.32 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Wed, 31 Jul 2019 08:35:33 -0700 (PDT) From: Guillaume La Roque To: daniel.lezcano@linaro.org, khilman@baylibre.com Subject: [PATCH v2 2/6] thermal: amlogic: Add thermal driver to support G12 SoCs Date: Wed, 31 Jul 2019 17:35:25 +0200 Message-Id: <20190731153529.30159-3-glaroque@baylibre.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190731153529.30159-1-glaroque@baylibre.com> References: <20190731153529.30159-1-glaroque@baylibre.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190731_083536_053339_381617DB X-CRM114-Status: GOOD ( 19.64 ) X-BeenThere: linux-amlogic@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=archiver.kernel.org@lists.infradead.org Signed-off-by: Guillaume La Roque --- drivers/thermal/Kconfig | 11 + drivers/thermal/Makefile | 1 + drivers/thermal/amlogic_thermal.c | 332 ++++++++++++++++++++++++++++++ 3 files changed, 344 insertions(+) create mode 100644 drivers/thermal/amlogic_thermal.c diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 9966364a6deb..0f31bb4bc372 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -348,6 +348,17 @@ config MTK_THERMAL Enable this option if you want to have support for thermal management controller present in Mediatek SoCs +config AMLOGIC_THERMAL + tristate "Amlogic Thermal Support" + default ARCH_MESON + depends on OF && ARCH_MESON + help + If you say yes here you get support for Amlogic Thermal + for G12 SoC Family. + + This driver can also be built as a module. If so, the module will + be called amlogic_thermal. + menu "Intel thermal drivers" depends on X86 || X86_INTEL_QUARK || COMPILE_TEST source "drivers/thermal/intel/Kconfig" diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 74a37c7f847a..baeb70bf0568 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -54,3 +54,4 @@ obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o +obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o diff --git a/drivers/thermal/amlogic_thermal.c b/drivers/thermal/amlogic_thermal.c new file mode 100644 index 000000000000..13cd4c42721a --- /dev/null +++ b/drivers/thermal/amlogic_thermal.c @@ -0,0 +1,332 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Amlogic Meson Thermal Sensor Driver + * + * Copyright (C) 2017 Huan Biao + * Copyright (C) 2019 Guillaume La Roque + * + * Register value to celsius temperature formulas: + * Read_Val m * U + * U = ---------, Uptat = --------- + * 2^16 1 + n * U + * + * Temperature = A * ( Uptat + u_efuse / 2^16 )- B + * + * A B m n : calibration parameters + * u_efuse : fused calibration value, it's a signed 16 bits value + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "thermal_core.h" + +#define TSENSOR_CFG_REG1 0x4 + #define TSENSOR_CFG_REG1_RSET_VBG BIT(12) + #define TSENSOR_CFG_REG1_RSET_ADC BIT(11) + #define TSENSOR_CFG_REG1_VCM_EN BIT(10) + #define TSENSOR_CFG_REG1_VBG_EN BIT(9) + #define TSENSOR_CFG_REG1_OUT_CTL BIT(6) + #define TSENSOR_CFG_REG1_FILTER_EN BIT(5) + #define TSENSOR_CFG_REG1_DEM_EN BIT(3) + #define TSENSOR_CFG_REG1_CH_SEL GENMASK(1, 0) + #define TSENSOR_CFG_REG1_ENABLE \ + (TSENSOR_CFG_REG1_FILTER_EN | \ + TSENSOR_CFG_REG1_VCM_EN | \ + TSENSOR_CFG_REG1_VBG_EN | \ + TSENSOR_CFG_REG1_DEM_EN | \ + TSENSOR_CFG_REG1_CH_SEL) + +#define TSENSOR_STAT0 0x40 + +#define TSENSOR_STAT9 0x64 + +#define TSENSOR_READ_TEMP_MASK GENMASK(15, 0) +#define TSENSOR_TEMP_MASK GENMASK(11, 0) + +#define TSENSOR_TRIM_SIGN_MASK BIT(15) +#define TSENSOR_TRIM_TEMP_MASK GENMASK(14, 0) +#define TSENSOR_TRIM_VERSION_MASK GENMASK(31, 24) + +#define TSENSOR_TRIM_VERSION(_version) \ + FIELD_GET(TSENSOR_TRIM_VERSION_MASK, _version) + +#define TSENSOR_TRIM_CALIB_VALID_MASK (GENMASK(3, 2) | BIT(7)) + +#define TSENSOR_CALIB_OFFSET 1 +#define TSENSOR_CALIB_SHIFT 4 + +/** + * struct amlogic_thermal_soc_data + * @A, B, m, n: calibration parameters + * This structure is required for configuration of amlogic thermal driver. + */ +struct amlogic_thermal_soc_data { + int A; + int B; + int m; + int n; +}; + +/** + * struct amlogic_thermal_data + * @u_efuse_off: register offset to read fused calibration value + * @soc: calibration parameters structure pointer + * @regmap_config: regmap config for the device + * This structure is required for configuration of amlogic thermal driver. + */ +struct amlogic_thermal_data { + int u_efuse_off; + const struct amlogic_thermal_soc_data *soc; + const struct regmap_config *regmap_config; +}; + +struct amlogic_thermal { + struct platform_device *pdev; + const struct amlogic_thermal_data *data; + struct regmap *regmap; + struct regmap *sec_ao_map; + struct clk *clk; + struct thermal_zone_device *tzd; + u32 trim_info; + void __iomem *base; +}; + +/* + * Calculate a temperature value from a temperature code. + * The unit of the temperature is degree Celsius. + */ +static int code_to_temp(struct amlogic_thermal *pdata, int temp_code) +{ + const struct amlogic_thermal_soc_data *param = pdata->data->soc; + int temp; + s64 factor, Uptat, uefuse; + + uefuse = pdata->trim_info & TSENSOR_TRIM_SIGN_MASK ? + ~(pdata->trim_info & TSENSOR_TRIM_TEMP_MASK) + 1 : + (pdata->trim_info & TSENSOR_TRIM_TEMP_MASK); + + factor = param->n * temp_code; + factor = div_s64(factor, 100); + + Uptat = temp_code * param->m; + Uptat = div_s64(Uptat, 100); + Uptat = Uptat * BIT(16); + Uptat = div_s64(Uptat, BIT(16) + factor); + + temp = (Uptat + uefuse) * param->A; + temp = div_s64(temp, BIT(16)); + temp = (temp - param->B) * 100; + + return temp; +} + +static int amlogic_thermal_initialize(struct amlogic_thermal *pdata) +{ + int ret = 0; + int ver; + + regmap_read(pdata->sec_ao_map, pdata->data->u_efuse_off, + &pdata->trim_info); + + ver = TSENSOR_TRIM_VERSION(pdata->trim_info); + + if ((ver & TSENSOR_TRIM_CALIB_VALID_MASK) == 0) { + ret = -EINVAL; + dev_err(&pdata->pdev->dev, + "tsensor thermal calibration not supported: 0x%x!\n", + ver); + } + + return ret; +} + +static int amlogic_thermal_enable(struct amlogic_thermal *data) +{ + clk_prepare_enable(data->clk); + regmap_update_bits(data->regmap, TSENSOR_CFG_REG1, + TSENSOR_CFG_REG1_ENABLE, TSENSOR_CFG_REG1_ENABLE); + + return 0; +} + +static int amlogic_thermal_disable(struct amlogic_thermal *data) +{ + regmap_update_bits(data->regmap, TSENSOR_CFG_REG1, + TSENSOR_CFG_REG1_ENABLE, 0); + clk_disable(data->clk); + + return 0; +} + +static int amlogic_thermal_get_temp(void *data, int *temp) +{ + unsigned int tvalue; + struct amlogic_thermal *pdata = data; + + if (!data) + return -EINVAL; + + regmap_read(pdata->regmap, TSENSOR_STAT0, &tvalue); + *temp = code_to_temp(pdata, + tvalue & TSENSOR_READ_TEMP_MASK); + + return 0; +} + +static const struct thermal_zone_of_device_ops amlogic_thermal_ops = { + .get_temp = amlogic_thermal_get_temp, +}; + +static const struct regmap_config amlogic_thermal_regmap_config_g12 = { + .reg_bits = 8, + .val_bits = 32, + .reg_stride = 4, + .max_register = TSENSOR_STAT9, +}; + +static const struct amlogic_thermal_soc_data amlogic_thermal_g12 = { + .A = 9411, + .B = 3159, + .m = 424, + .n = 324, +}; + +static const struct amlogic_thermal_data amlogic_thermal_g12_cpu_param = { + .u_efuse_off = 0x128, + .soc = &amlogic_thermal_g12, + .regmap_config = &amlogic_thermal_regmap_config_g12, +}; + +static const struct amlogic_thermal_data amlogic_thermal_g12_ddr_param = { + .u_efuse_off = 0xF0, + .soc = &amlogic_thermal_g12, + .regmap_config = &amlogic_thermal_regmap_config_g12, +}; + +static const struct of_device_id of_amlogic_thermal_match[] = { + { + .compatible = "amlogic,g12-ddr-thermal", + .data = &amlogic_thermal_g12_ddr_param, + }, + { + .compatible = "amlogic,g12-cpu-thermal", + .data = &amlogic_thermal_g12_cpu_param, + }, + { /* end */ } +}; +MODULE_DEVICE_TABLE(of, of_amlogic_thermal_match); + +static int amlogic_thermal_probe(struct platform_device *pdev) +{ + struct amlogic_thermal *pdata; + struct device *dev = &pdev->dev; + struct resource *res; + int ret; + + pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); + if (!pdata) + return -ENOMEM; + + pdata->data = of_device_get_match_data(dev); + pdata->pdev = pdev; + platform_set_drvdata(pdev, pdata); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + pdata->base = devm_ioremap_resource(dev, res); + if (IS_ERR(pdata->base)) { + dev_err(dev, "failed to get io address\n"); + return PTR_ERR(pdata->base); + } + + pdata->regmap = devm_regmap_init_mmio(dev, pdata->base, + pdata->data->regmap_config); + if (IS_ERR(pdata->regmap)) + return PTR_ERR(pdata->regmap); + + pdata->clk = devm_clk_get(dev, NULL); + if (IS_ERR(pdata->clk)) { + if (PTR_ERR(pdata->clk) != -EPROBE_DEFER) + dev_err(dev, "failed to get clock\n"); + return PTR_ERR(pdata->clk); + } + + pdata->sec_ao_map = syscon_regmap_lookup_by_phandle + (pdev->dev.of_node, "amlogic,ao-secure"); + if (IS_ERR(pdata->sec_ao_map)) { + dev_err(dev, "syscon regmap lookup failed.\n"); + return PTR_ERR(pdata->sec_ao_map); + } + + pdata->tzd = devm_thermal_zone_of_sensor_register + (&pdev->dev, + 0, + pdata, + &amlogic_thermal_ops); + if (IS_ERR(pdata->tzd)) { + ret = PTR_ERR(pdata->tzd); + dev_err(dev, "Failed to register tsensor: %d\n", ret); + return PTR_ERR(pdata->tzd); + } + + ret = amlogic_thermal_initialize(pdata); + if (ret) + return ret; + + ret = amlogic_thermal_enable(pdata); + if (ret) + clk_unprepare(pdata->clk); + + return ret; +} + +static int amlogic_thermal_remove(struct platform_device *pdev) +{ + struct amlogic_thermal *data = platform_get_drvdata(pdev); + + return amlogic_thermal_disable(data); +} + +#ifdef CONFIG_PM_SLEEP +static int amlogic_thermal_suspend(struct device *dev) +{ + struct amlogic_thermal *data = dev_get_drvdata(dev); + + return amlogic_thermal_disable(data); +} + +static int amlogic_thermal_resume(struct device *dev) +{ + struct amlogic_thermal *data = dev_get_drvdata(dev); + + return amlogic_thermal_enable(data); +} +#endif + +static SIMPLE_DEV_PM_OPS(amlogic_thermal_pm_ops, + amlogic_thermal_suspend, amlogic_thermal_resume); + +static struct platform_driver amlogic_thermal_driver = { + .driver = { + .name = "amlogic_thermal", + .pm = &amlogic_thermal_pm_ops, + .of_match_table = of_amlogic_thermal_match, + }, + .probe = amlogic_thermal_probe, + .remove = amlogic_thermal_remove, +}; + +module_platform_driver(amlogic_thermal_driver); + +MODULE_AUTHOR("Guillaume La Roque "); +MODULE_DESCRIPTION("Amlogic thermal driver"); +MODULE_LICENSE("GPL v2"); -- 2.17.1 _______________________________________________ linux-amlogic mailing list linux-amlogic@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-amlogic