From patchwork Wed Mar 16 03:01:05 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li-hao Kuo X-Patchwork-Id: 12782167 X-Patchwork-Delegate: daniel.lezcano@linaro.org 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 0C974C4332F for ; Wed, 16 Mar 2022 03:00:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1353426AbiCPDCD (ORCPT ); Tue, 15 Mar 2022 23:02:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1353420AbiCPDCC (ORCPT ); Tue, 15 Mar 2022 23:02:02 -0400 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B93275DE6A; Tue, 15 Mar 2022 20:00:49 -0700 (PDT) Received: by mail-pj1-x1035.google.com with SMTP id mj15-20020a17090b368f00b001c637aa358eso3560842pjb.0; Tue, 15 Mar 2022 20:00:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=PqHy1PwaZNjNRGByNj9ihuLwsqt4YhXkhniLCUZpke4=; b=BoOIsnsDpc+A9MoPYHqZ2OSL434ZTI+2EVccGh3GvLEaO6CoDVaqzRXyqxJPe4pVxr F7BePshWssmoUfhbC8ZWaxN2S06xy2tTiTpbpershJrrtUusaRqEpkVEM8MHCXUAC3x+ qSNe2bcl4pusX8ZoUvyW4o8SqUUmPFT0ny1QYVrdcnf27CMhHxolHp+OIY/g0LmNYjFO 8VXAYJuJT369qGQmgE5VQUdtKmqByx4BZw7QKb56OTrT+nW4+/WjKCMOetzwDXUtHwpA 3uyZR647qS9Hg0dkXarqvPiJHwMYPSjvgJOZTRsZ14EGjp9bkEnkd9PYNcqDbkRryCyc aOjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=PqHy1PwaZNjNRGByNj9ihuLwsqt4YhXkhniLCUZpke4=; b=r3WEdgdQ30UW/hVHP2Qe5WJlSEOzw5vO14U9V+tfHKre/JRfnA1vgm0P6r0+dqbkAW BegtHCagTdS1q9M7ZjGPSWThsRiEb8nHNy7kyfXlpEc5V3SGxLvCCofuIZLrwBAO2t7T RLhrfB1eoEMplQASHCdZSCf4/2ZlGXyoGwdOZN0/p4XhZEN+hZo0rMMEF3fDuLlxeF+Z pDK0QIGCdMv9xN+M+VI6q5X7cuP00stOMY7HkqC+Nw29ZzXiXk0G7+5YHs9B/0JrgfBL SmLKj7wOviq1A0vuTs/+IybJCzGNklrw4U8E8O9ATLSPPX1Lx+bQWEVeZEM2xoDdUsP+ soAw== X-Gm-Message-State: AOAM531OeM5R6zKKyZwPaO2aVlZZ5Tgo+KJ0EOotz4ZlvppTms3SCenb YIZ5IESRfl1bN1SmaOw0fUI= X-Google-Smtp-Source: ABdhPJw3LOVwLAujKGODan9MeDUCaCidp9/UWSwZ0aPZKgQdItNbEAcv670tBFDweAWx7OjKo0fDJw== X-Received: by 2002:a17:90b:4c84:b0:1c6:573f:145d with SMTP id my4-20020a17090b4c8400b001c6573f145dmr2545305pjb.154.1647399649164; Tue, 15 Mar 2022 20:00:49 -0700 (PDT) Received: from scdiu3.sunplus.com ([113.196.136.192]) by smtp.googlemail.com with ESMTPSA id d16-20020a17090ad99000b001bcbc4247a0sm582329pjv.57.2022.03.15.20.00.47 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Tue, 15 Mar 2022 20:00:48 -0700 (PDT) From: Li-hao Kuo To: rafael@kernel.org, daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, robh+dt@kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: wells.lu@sunplus.com, lh.kuo@sunplus.com, Li-hao Kuo Subject: [PATCH v5 1/2] thermal: Add thermal driver for Sunplus SP7021 Date: Wed, 16 Mar 2022 11:01:05 +0800 Message-Id: X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add thermal driver for Sunplus SP7021. Signed-off-by: Li-hao Kuo --- Changes in v5: - Modify yaml file remove reg name and change nvmem name - Addressed comments from Mr. Daniel Lezcano MAINTAINERS | 6 ++ drivers/thermal/Kconfig | 10 +++ drivers/thermal/Makefile | 1 + drivers/thermal/sunplus_thermal.c | 140 ++++++++++++++++++++++++++++++++++++++ 4 files changed, 157 insertions(+) create mode 100644 drivers/thermal/sunplus_thermal.c diff --git a/MAINTAINERS b/MAINTAINERS index e127c2f..96d5218 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18542,6 +18542,12 @@ S: Maintained F: Documentation/devicetree/bindings/rtc/sunplus,sp7021-rtc.yaml F: drivers/rtc/rtc-sunplus.c +SUNPLUS THERMAL DRIVER +M: Li-hao Kuo +L: linux-pm@vger.kernel.org +S: Maintained +F: drivers/thermal/sunplus_thermal.c + SUPERH M: Yoshinori Sato M: Rich Felker diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index e37691e..98647c7 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -502,4 +502,14 @@ config KHADAS_MCU_FAN_THERMAL If you say yes here you get support for the FAN controlled by the Microcontroller found on the Khadas VIM boards. +config SUNPLUS_THERMAL + tristate "Sunplus thermal drivers" + depends on SOC_SP7021 + help + This the Sunplus SP7021 thermal driver, which supports the primitive + temperature sensor embedded in Sunplus SP7021 SoC. + + If you have a Sunplus SP7021 platform say Y here and enable this option + to have support for thermal management + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index f0c36a1..2f7417a 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -61,3 +61,4 @@ obj-$(CONFIG_UNIPHIER_THERMAL) += uniphier_thermal.o obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o obj-$(CONFIG_SPRD_THERMAL) += sprd_thermal.o obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL) += khadas_mcu_fan.o +obj-$(CONFIG_SUNPLUS_THERMAL) += sunplus_thermal.o \ No newline at end of file diff --git a/drivers/thermal/sunplus_thermal.c b/drivers/thermal/sunplus_thermal.c new file mode 100644 index 0000000..e2e955e --- /dev/null +++ b/drivers/thermal/sunplus_thermal.c @@ -0,0 +1,140 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) Sunplus Inc. + * Author: Li-hao Kuo + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define DISABLE_THERMAL (BIT(31) | BIT(15)) +#define ENABLE_THERMAL BIT(31) +#define SP_THERMAL_MASK GENMASK(10, 0) +#define SP_TCODE_HIGH_MASK GENMASK(10, 8) +#define SP_TCODE_LOW_MASK GENMASK(7, 0) + +#define TEMP_RATE 608 +#define TEMP_BASE 3500 +#define TEMP_OTP_BASE 1518 + +#define SP_THERMAL_CTL0_REG 0x0000 +#define SP_THERMAL_STS0_REG 0x0030 + +/* common data structures */ +struct sp_thermal_data { + struct thermal_zone_device *pcb_tz; + struct platform_device *pdev; + enum thermal_device_mode mode; + void __iomem *regs; + int otp_temp0; + u32 id; +}; + +static char sp7021_get_otp_temp_coef(struct sp_thermal_data *sp_data, struct device *dev) +{ + struct nvmem_cell *cell; + ssize_t otp_l; + char *otp_v; + + cell = nvmem_cell_get(dev, "calib"); + if (IS_ERR(cell)) + return ERR_CAST(cell); + + otp_v = nvmem_cell_read(cell, &otp_l); + nvmem_cell_put(cell); + + if (otp_l < 3) + return -EINVAL; + sp_data->otp_temp0 = FIELD_PREP(SP_TCODE_LOW_MASK, otp_v[0]) | + FIELD_PREP(SP_TCODE_HIGH_MASK, otp_v[1]); + if (sp_data->otp_temp0 == 0) + sp_data->otp_temp0 = TEMP_OTP_BASE; + return 0; +} + +static int sp_thermal_get_sensor_temp(void *data, int *temp) +{ + struct sp_thermal_data *sp_data = data; + int t_code; + + t_code = readl(sp_data->regs + SP_THERMAL_STS0_REG); + t_code = FIELD_GET(SP_THERMAL_MASK, t_code); + *temp = ((sp_data->otp_temp0 - t_code) * 10000 / TEMP_RATE) + TEMP_BASE; + *temp *= 10; + return 0; +} + +static struct thermal_zone_of_device_ops sp_of_thermal_ops = { + .get_temp = sp_thermal_get_sensor_temp, +}; + +static int sp_thermal_register_sensor(struct platform_device *pdev, + struct sp_thermal_data *data, int index) +{ + data->id = index; + data->pcb_tz = devm_thermal_zone_of_sensor_register(&pdev->dev, + data->id, + data, &sp_of_thermal_ops); + if (IS_ERR_OR_NULL(data->pcb_tz)) + return PTR_ERR(data->pcb_tz); + return 0; +} + +static int sp7021_thermal_probe(struct platform_device *pdev) +{ + struct sp_thermal_data *sp_data; + struct resource *res; + int ret; + + sp_data = devm_kzalloc(&pdev->dev, sizeof(*sp_data), GFP_KERNEL); + if (!sp_data) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (IS_ERR(res)) + return dev_err_probe(&pdev->dev, PTR_ERR(res), "resource get fail\n"); + + sp_data->regs = devm_ioremap(&pdev->dev, res->start, resource_size(res)); + if (IS_ERR(sp_data->regs)) + return dev_err_probe(&pdev->dev, PTR_ERR(sp_data->regs), "mas_base get fail\n"); + + writel(ENABLE_THERMAL, sp_data->regs + SP_THERMAL_CTL0_REG); + + platform_set_drvdata(pdev, sp_data); + ret = sp7021_get_otp_temp_coef(sp_data, &pdev->dev); + ret = sp_thermal_register_sensor(pdev, sp_data, 0); + + return ret; +} + +static int sp7021_thermal_remove(struct platform_device *pdev) +{ + return 0; +} + +static const struct of_device_id of_sp7021_thermal_ids[] = { + { .compatible = "sunplus,sp7021-thermal" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, of_sp7021_thermal_ids); + +static struct platform_driver sp7021_thermal_driver = { + .probe = sp7021_thermal_probe, + .remove = sp7021_thermal_remove, + .driver = { + .name = "sp7021-thermal", + .of_match_table = of_match_ptr(of_sp7021_thermal_ids), + }, +}; +module_platform_driver(sp7021_thermal_driver); + +MODULE_AUTHOR("Li-hao Kuo "); +MODULE_DESCRIPTION("Thermal driver for SP7021 SoC"); +MODULE_LICENSE("GPL"); From patchwork Wed Mar 16 03:01:06 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li-hao Kuo X-Patchwork-Id: 12782168 X-Patchwork-Delegate: daniel.lezcano@linaro.org 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 94B0EC433FE for ; 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Tue, 15 Mar 2022 20:00:51 -0700 (PDT) From: Li-hao Kuo To: rafael@kernel.org, daniel.lezcano@linaro.org, amitk@kernel.org, rui.zhang@intel.com, robh+dt@kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: wells.lu@sunplus.com, lh.kuo@sunplus.com, Li-hao Kuo Subject: [PATCH v5 2/2] dt-bindings:thermal: Add Sunplus SP7021 schema Date: Wed, 16 Mar 2022 11:01:06 +0800 Message-Id: <71c1b80e0083f38de71f36193e12b3cbff2ec852.1647399369.git.lhjeff911@gmail.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: References: In-Reply-To: References: Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add bindings for Sunplus SP7021 thermal driver Signed-off-by: Li-hao Kuo --- Changes in v5: - Modify yaml file remove reg name and change nvmem name - Addressed comments from Mr. Daniel Lezcano .../bindings/thermal/sunplus_thermal.yaml | 47 ++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml diff --git a/Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml b/Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml new file mode 100644 index 0000000..176bc07 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml @@ -0,0 +1,47 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +# Copyright (C) Sunplus Co., Ltd. +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/sunplus_thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Sunplus Thermal controller + +maintainers: + - Li-hao Kuo + +properties: + compatible: + enum: + - sunplus,sp7021-thermal + + reg: + maxItems: 1 + + reg-names: + items: + - const: reg + + nvmem-cells: + maxItems: 1 + + nvmem-cell-names: + const: therm_calib + +required: + - compatible + - reg + - nvmem-cells + - nvmem-cell-names + +additionalProperties: false + +examples: + - | + thermal@9c000280 { + compatible = "sunplus,sp7021-thermal"; + reg = <0x9c000280 0x80>; + nvmem-cells = <&therm_calib>; + nvmem-cell-names = "therm_calib"; + }; +... diff --git a/MAINTAINERS b/MAINTAINERS index 96d5218..5000b8a 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18546,6 +18546,7 @@ SUNPLUS THERMAL DRIVER M: Li-hao Kuo L: linux-pm@vger.kernel.org S: Maintained +F: Documentation/devicetree/bindings/thermal/sunplus_thermal.yaml F: drivers/thermal/sunplus_thermal.c SUPERH