From patchwork Wed Jan 18 04:42:00 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoyou Xie X-Patchwork-Id: 91725 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp841099qgi; Tue, 17 Jan 2017 20:42:55 -0800 (PST) X-Received: by 10.84.170.67 with SMTP id i61mr2128876plb.88.1484714575687; Tue, 17 Jan 2017 20:42:55 -0800 (PST) Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id v123si27134628pfb.245.2017.01.17.20.42.55 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 17 Jan 2017 20:42:55 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cTi5F-0007KH-Um; Wed, 18 Jan 2017 04:42:53 +0000 Received: from mail-pf0-x231.google.com ([2607:f8b0:400e:c00::231]) by bombadil.infradead.org with esmtps (Exim 4.87 #1 (Red Hat Linux)) id 1cTi5B-0007H6-Dl for linux-arm-kernel@lists.infradead.org; Wed, 18 Jan 2017 04:42:51 +0000 Received: by mail-pf0-x231.google.com with SMTP id 189so904389pfu.3 for ; Tue, 17 Jan 2017 20:42:27 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=knyPW43/GKxt1rIQeXcZPjdzuwItJKIhXokEkTf4HwA=; b=WKuIX+jYQoZiR4XqtwgMGIyeij3UVVUdjXunFNx98kmwgXJSLSGIDvEvT6VIYI/1gV wjvy07IM6t1Z89x8bHj7RQg7XqdeXIR+4LBkBzPG83IU2vTyvGCJJsi540yOdgwxekoJ Pk+YG8XLulErDtluV+QwcoMZAR7Dqm1NXaqYM= 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; bh=knyPW43/GKxt1rIQeXcZPjdzuwItJKIhXokEkTf4HwA=; b=tCCNcqOC9tTdreFDpKFUWXaQhkQ2OwgUWroeqdN2/7+roMhhYl1pWwZjrUEEi8gwte wz9Btn+kI1Z1Mv0S+aJaOaoX3kMbSpRPgXRNHKDjp6Yg7qq/UaL/PV5q6PpmCm2PxUw0 H7gw9iMHtHWjD1bxwMOdZhR68Vy+4NpAAKAH34zJSOlBv7QJDP482DjJaPzPQGA+C/8+ Tyv2pRx+6b6aglDP7PgdtaK5xPRQHAkHADjDP2/p9EldVRcLIydqYZ30AJROG2IZ08qZ d7x5cR1/720JQpWPsf9s81YxZvvcq3wj9WfQ5uL5Ja3L06P5qnuEIEOzoII5A/W5yJuH dIVw== X-Gm-Message-State: AIkVDXIk07QTi67VhkB7oLCu4vYaFsdI0d9wrDWMfOezxfptnsi4JgoA9+lLWEpTkNvv8quB X-Received: by 10.84.197.1 with SMTP id m1mr2137655pld.123.1484714546705; Tue, 17 Jan 2017 20:42:26 -0800 (PST) Received: from localhost.localdomain ([104.237.91.121]) by smtp.gmail.com with ESMTPSA id p26sm32559197pfj.23.2017.01.17.20.42.18 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 17 Jan 2017 20:42:25 -0800 (PST) From: Baoyou Xie To: jun.nie@linaro.org, rui.zhang@intel.com, edubezval@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com Subject: [PATCH v5 1/3] dt: bindings: add documentation for zx2967 family thermal sensor Date: Wed, 18 Jan 2017 12:42:00 +0800 Message-Id: <1484714522-26651-1-git-send-email-baoyou.xie@linaro.org> X-Mailer: git-send-email 2.7.4 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170117_204249_543535_7EA4A843 X-CRM114-Status: GOOD ( 13.27 ) X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c00:0:0:0:231 listed in] [list.dnswl.org] 0.0 HK_RANDOM_ENVFROM Envelope sender username looks random -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, xie.baoyou@zte.com.cn, linux-kernel@vger.kernel.org, chen.chaokai@zte.com.cn, wang.qiang01@zte.com.cn, baoyou.xie@linaro.org, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org This patch adds dt-binding documentation for zx2967 family thermal sensor. Signed-off-by: Baoyou Xie Acked-by: Rob Herring Reviewed-by: Shawn Guo --- .../devicetree/bindings/thermal/zx2967-thermal.txt | 109 +++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/zx2967-thermal.txt -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt new file mode 100644 index 0000000..a96c8b3 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/zx2967-thermal.txt @@ -0,0 +1,109 @@ +* ZTE zx2967 family Thermal + +Required Properties: +- compatible: should be one of the following. + * zte,zx296718-thermal +- reg: physical base address of the controller and length of memory mapped + region. +- clocks : Pairs of phandle and specifier referencing the controller's clocks. +- clock-names: "gate" for the topcrm clock. + "pclk" for the apb clock. +- #thermal-sensor-cells: must be 0. + +Example for tempsensor: + + tempsensor: tempsensor@148a000 { + compatible = "zte,zx296718-thermal"; + reg = <0x0148a000 0x20>; + clocks = <&topcrm TEMPSENSOR_GATE>, <&audiocrm AUDIO_TS_PCLK>; + clock-names = "gate", "pclk"; + #thermal-sensor-cells = <0>; + }; + +Example for cooling device: + + cooling_dev: cooling_dev { + cluster0_cooling_dev: cluster0-cooling-dev { + #cooling-cells = <2>; + cpumask = <0xf>; + capacitance = <1500>; + }; + + cluster1_cooling_dev: cluster1-cooling-dev { + #cooling-cells = <2>; + cpumask = <0x30>; + capacitance = <2000>; + }; + }; + +Example for thermal zones: + + thermal-zones { + zx296718_thermal: zx296718_thermal { + polling-delay-passive = <500>; + polling-delay = <1000>; + sustainable-power = <6500>; + + thermal-sensors = <&tempsensor 0>; + + trips { + trip0: switch_on_temperature { + temperature = <90000>; + hysteresis = <2000>; + type = "passive"; + }; + + trip1: desired_temperature { + temperature = <100000>; + hysteresis = <2000>; + type = "passive"; + }; + + crit: critical_temperature { + temperature = <110000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + + cooling-maps { + map0 { + trip = <&trip0>; + cooling-device = <&gpu 2 5>; + }; + + map1 { + trip = <&trip0>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map2 { + trip = <&trip1>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map3 { + trip = <&crit>; + cooling-device = <&cluster0_cooling_dev 1 2>; + }; + + map4 { + trip = <&trip0>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <9000>; + }; + + map5 { + trip = <&trip1>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <4096>; + }; + + map6 { + trip = <&crit>; + cooling-device = <&cluster1_cooling_dev 1 2>; + contribution = <4096>; + }; + }; + }; + }; From patchwork Wed Jan 18 04:42:01 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoyou Xie X-Patchwork-Id: 91726 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp841166qgi; Tue, 17 Jan 2017 20:43:08 -0800 (PST) X-Received: by 10.99.103.133 with SMTP id b127mr1689173pgc.168.1484714588614; Tue, 17 Jan 2017 20:43:08 -0800 (PST) Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org. 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X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.4.1 on bombadil.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [2607:f8b0:400e:c00:0:0:0:22e listed in] [list.dnswl.org] 0.0 HK_RANDOM_ENVFROM Envelope sender username looks random -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, xie.baoyou@zte.com.cn, linux-kernel@vger.kernel.org, chen.chaokai@zte.com.cn, wang.qiang01@zte.com.cn, baoyou.xie@linaro.org, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org Add the zx2967 thermal drivers as maintained by ARM ZTE architecture maintainers, as they're parts of the core IP. Signed-off-by: Baoyou Xie --- MAINTAINERS | 2 ++ 1 file changed, 2 insertions(+) -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/MAINTAINERS b/MAINTAINERS index 5fb9b62..edfdea3 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -1989,10 +1989,12 @@ F: arch/arm/mach-zx/ F: drivers/clk/zte/ F: drivers/reset/reset-zx2967.c F: drivers/soc/zte/ +F: drivers/thermal/zx* F: Documentation/devicetree/bindings/arm/zte.txt F: Documentation/devicetree/bindings/clock/zx296702-clk.txt F: Documentation/devicetree/bindings/reset/zte,zx2967-reset.txt F: Documentation/devicetree/bindings/soc/zte/ +F: Documentation/devicetree/bindings/thermal/zx* F: include/dt-bindings/soc/zx*.h ARM/ZYNQ ARCHITECTURE From patchwork Wed Jan 18 04:42:02 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Baoyou Xie X-Patchwork-Id: 91727 Delivered-To: patch@linaro.org Received: by 10.140.20.99 with SMTP id 90csp841372qgi; Tue, 17 Jan 2017 20:43:52 -0800 (PST) X-Received: by 10.99.96.9 with SMTP id u9mr1653064pgb.151.1484714632164; Tue, 17 Jan 2017 20:43:52 -0800 (PST) Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id 3si21385327pln.193.2017.01.17.20.43.51; Tue, 17 Jan 2017 20:43:52 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@linaro.org; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751342AbdAREnu (ORCPT + 13 others); Tue, 17 Jan 2017 23:43:50 -0500 Received: from mail-pf0-f180.google.com ([209.85.192.180]:34928 "EHLO mail-pf0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751070AbdAREnp (ORCPT ); Tue, 17 Jan 2017 23:43:45 -0500 Received: by mail-pf0-f180.google.com with SMTP id f144so918318pfa.2 for ; Tue, 17 Jan 2017 20:42:47 -0800 (PST) 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; bh=DOVrZ4frlloRWUEUgii7yiCXnco0Wue4icaT4afCZoI=; b=D1MBh4A7M1EXU/FW6Y3ARYIM+uc1BGEvK81+KOq5W1isXL67+9lerz0cU6ahnGjhmN +VF8b6fXkmLmVl8NRt+G1ppLi3y+26dmN1hrPNAAdSsxOrn/yZ7w0GSXOYw1H2+Bnauf Z+fnBYVUlE+q6xZuTDFp09y42l5uucixvU1F4= 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=DOVrZ4frlloRWUEUgii7yiCXnco0Wue4icaT4afCZoI=; b=okOjSOF0fbKDlZw6rX8RpEDKRkOhaSwTAtemSaSv/LLwWfaNgmkWHLz/lwsT/rf/ci 5bkr2ciGw77Zu/xEG6LUxM7Y7Qk61T3aXqhbmmm7GmMgty8JQOg+CPHv1ptZmPjH0z6W ar7XcZlYMJ7lSmUxEA+VpiG5SnUMQeRGvWiWLgZw5A4Kmp83aOxlNOm31iWsqMEJ3X2Y hjtnY1g6wIvxNQ5USZkTqZedw6fp1G93GV2Fu+IXAvCTV/jt+FCgHcsKJZV/AC+f39Jp TqgUqmHe4KO+6o5yh/DEe/IXF4N9PijXOE8irt4JTiAuS9PO2qpmZozdW088aDJH9H7q /BXA== X-Gm-Message-State: AIkVDXKTZSs884pSypR2nZoTMZMlV4nrXVvmKcjwAfpTrH2X8xjDGXKn2iZx3dQaFFzZr/3q X-Received: by 10.99.97.196 with SMTP id v187mr1625067pgb.175.1484714566737; Tue, 17 Jan 2017 20:42:46 -0800 (PST) Received: from localhost.localdomain ([104.237.91.121]) by smtp.gmail.com with ESMTPSA id p26sm32559197pfj.23.2017.01.17.20.42.35 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 17 Jan 2017 20:42:46 -0800 (PST) From: Baoyou Xie To: jun.nie@linaro.org, rui.zhang@intel.com, edubezval@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, shawnguo@kernel.org, baoyou.xie@linaro.org, xie.baoyou@zte.com.cn, chen.chaokai@zte.com.cn, wang.qiang01@zte.com.cn Subject: [PATCH v5 3/3] thermal: zx2967: add thermal driver for ZTE's zx2967 family Date: Wed, 18 Jan 2017 12:42:02 +0800 Message-Id: <1484714522-26651-3-git-send-email-baoyou.xie@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1484714522-26651-1-git-send-email-baoyou.xie@linaro.org> References: <1484714522-26651-1-git-send-email-baoyou.xie@linaro.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds thermal driver for ZTE's zx2967 family. Signed-off-by: Baoyou Xie --- drivers/thermal/Kconfig | 8 ++ drivers/thermal/Makefile | 1 + drivers/thermal/zx2967_thermal.c | 256 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 265 insertions(+) create mode 100644 drivers/thermal/zx2967_thermal.c -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-pm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 18f2de6..f64bd50 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -444,4 +444,12 @@ config BCM2835_THERMAL help Support for thermal sensors on Broadcom bcm2835 SoCs. +config ZX2967_THERMAL + tristate "Thermal sensors on zx2967 SoC" + depends on ARCH_ZX || COMPILE_TEST + help + Enable the zx2967 thermal sensors driver, which supports + the primitive temperature sensor embedded in zx2967 SoCs. + This sensor generates the real time die temperature. + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 677c6d9..c00c05e 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -57,3 +57,4 @@ obj-$(CONFIG_HISI_THERMAL) += hisi_thermal.o obj-$(CONFIG_MTK_THERMAL) += mtk_thermal.o obj-$(CONFIG_GENERIC_ADC_THERMAL) += thermal-generic-adc.o obj-$(CONFIG_BCM2835_THERMAL) += bcm2835_thermal.o +obj-$(CONFIG_ZX2967_THERMAL) += zx2967_thermal.o diff --git a/drivers/thermal/zx2967_thermal.c b/drivers/thermal/zx2967_thermal.c new file mode 100644 index 0000000..1f08c33 --- /dev/null +++ b/drivers/thermal/zx2967_thermal.c @@ -0,0 +1,256 @@ +/* + * ZTE's zx2967 family thermal sensor driver + * + * Copyright (C) 2017 ZTE Ltd. + * + * Author: Baoyou Xie + * + * License terms: GNU General Public License (GPL) version 2 + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Power Mode: 0->low 1->high */ +#define ZX2967_THERMAL_POWER_MODE 0 + +/* DCF Control Register */ +#define ZX2967_THERMAL_DCF 0x4 + +/* Selection Register */ +#define ZX2967_THERMAL_SEL 0x8 + +/* Control Register */ +#define ZX2967_THERMAL_CTRL 0x10 + +#define ZX2967_THERMAL_READY 0x1000 +#define ZX2967_THERMAL_TEMP_MASK 0xfff +#define ZX2967_THERMAL_ID_MASK 0x18 +#define ZX2967_THERMAL_ID0 0x8 +#define ZX2967_THERMAL_ID1 0x10 + +struct zx2967_thermal_sensor { + struct zx2967_thermal_priv *priv; + struct thermal_zone_device *tzd; + int id; +}; + +#define NUM_SENSORS 1 + +struct zx2967_thermal_priv { + struct zx2967_thermal_sensor sensors[NUM_SENSORS]; + /* Prevents reads sensor in parallel */ + struct mutex lock; + struct clk *clk_gate; + struct clk *pclk; + void __iomem *regs; + struct device *dev; +}; + +static int zx2967_thermal_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + + if (priv && priv->pclk) + clk_disable_unprepare(priv->pclk); + + if (priv && priv->clk_gate) + clk_disable_unprepare(priv->clk_gate); + + return 0; +} + +static int zx2967_thermal_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + int error; + + error = clk_prepare_enable(priv->clk_gate); + if (error) + return error; + + error = clk_prepare_enable(priv->pclk); + if (error) { + clk_disable_unprepare(priv->clk_gate); + return error; + } + + return 0; +} + +static int zx2967_thermal_get_temp(void *data, int *temp) +{ + void __iomem *regs; + struct zx2967_thermal_sensor *sensor = data; + struct zx2967_thermal_priv *priv = sensor->priv; + unsigned long timeout = jiffies + msecs_to_jiffies(100); + u32 val, sel_id; + + regs = priv->regs; + mutex_lock(&priv->lock); + + writel_relaxed(0, regs + ZX2967_THERMAL_POWER_MODE); + writel_relaxed(2, regs + ZX2967_THERMAL_DCF); + + val = readl_relaxed(regs + ZX2967_THERMAL_SEL); + val &= ~ZX2967_THERMAL_ID_MASK; + sel_id = sensor->id ? ZX2967_THERMAL_ID0 : ZX2967_THERMAL_ID1; + val |= sel_id; + writel_relaxed(val, regs + ZX2967_THERMAL_SEL); + + usleep_range(100, 300); + val = readl_relaxed(regs + ZX2967_THERMAL_CTRL); + while (!(val & ZX2967_THERMAL_READY)) { + if (time_after(jiffies, timeout)) { + dev_err(priv->dev, "Thermal sensor %d data timeout\n", + sensor->id); + mutex_unlock(&priv->lock); + return -ETIMEDOUT; + } + usleep_range(100, 300); + val = readl_relaxed(regs + ZX2967_THERMAL_CTRL); + } + + writel_relaxed(3, regs + ZX2967_THERMAL_DCF); + val = readl_relaxed(regs + ZX2967_THERMAL_CTRL) + & ZX2967_THERMAL_TEMP_MASK; + writel_relaxed(1, regs + ZX2967_THERMAL_POWER_MODE); + + /* + * Calculate temperature + * 922 initial value of calibration cure + * 1.951 slope of calibration cure + */ + *temp = DIV_ROUND_CLOSEST((val - 922) * 1000, 1951); + + mutex_unlock(&priv->lock); + + return 0; +} + +static struct thermal_zone_of_device_ops zx2967_of_thermal_ops = { + .get_temp = zx2967_thermal_get_temp, +}; + +static int zx2967_thermal_probe(struct platform_device *pdev) +{ + struct zx2967_thermal_priv *priv; + struct resource *res; + int ret, i; + + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(priv->regs)) + return PTR_ERR(priv->regs); + + priv->clk_gate = devm_clk_get(&pdev->dev, "gate"); + if (IS_ERR(priv->clk_gate)) { + ret = PTR_ERR(priv->clk_gate); + dev_err(&pdev->dev, "failed to get clock gate: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(priv->clk_gate); + if (ret) { + dev_err(&pdev->dev, "failed to enable converter clock: %d\n", + ret); + return ret; + } + + priv->pclk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(priv->pclk)) { + ret = PTR_ERR(priv->pclk); + clk_disable_unprepare(priv->clk_gate); + dev_err(&pdev->dev, "failed to get apb clock: %d\n", ret); + return ret; + } + + ret = clk_prepare_enable(priv->pclk); + if (ret) { + clk_disable_unprepare(priv->clk_gate); + dev_err(&pdev->dev, "failed to enable converter clock: %d\n", + ret); + return ret; + } + + mutex_init(&priv->lock); + for (i = 0; i < NUM_SENSORS; i++) { + struct zx2967_thermal_sensor *sensor = &priv->sensors[i]; + + sensor->priv = priv; + sensor->id = i; + sensor->tzd = thermal_zone_of_sensor_register(&pdev->dev, + i, sensor, &zx2967_of_thermal_ops); + if (IS_ERR(sensor->tzd)) { + ret = PTR_ERR(sensor->tzd); + dev_err(&pdev->dev, "failed to register sensor %d: %d\n", + i, ret); + goto remove_ts; + } + } + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + + return 0; + +remove_ts: + clk_disable_unprepare(priv->clk_gate); + clk_disable_unprepare(priv->pclk); + for (i--; i >= 0; i--) + thermal_zone_of_sensor_unregister(&pdev->dev, + priv->sensors[i].tzd); + + return ret; +} + +static int zx2967_thermal_exit(struct platform_device *pdev) +{ + struct zx2967_thermal_priv *priv = platform_get_drvdata(pdev); + int i; + + for (i = 0; i < NUM_SENSORS; i++) { + struct zx2967_thermal_sensor *sensor = &priv->sensors[i]; + + thermal_zone_of_sensor_unregister(&pdev->dev, sensor->tzd); + } + clk_disable_unprepare(priv->pclk); + clk_disable_unprepare(priv->clk_gate); + + return 0; +} + +static const struct of_device_id zx2967_thermal_id_table[] = { + { .compatible = "zte,zx296718-thermal" }, + {} +}; +MODULE_DEVICE_TABLE(of, zx2967_thermal_id_table); + +static SIMPLE_DEV_PM_OPS(zx2967_thermal_pm_ops, + zx2967_thermal_suspend, zx2967_thermal_resume); + +static struct platform_driver zx2967_thermal_driver = { + .probe = zx2967_thermal_probe, + .remove = zx2967_thermal_exit, + .driver = { + .name = "zx2967_thermal", + .of_match_table = zx2967_thermal_id_table, + .pm = &zx2967_thermal_pm_ops, + }, +}; +module_platform_driver(zx2967_thermal_driver); + +MODULE_AUTHOR("Baoyou Xie "); +MODULE_DESCRIPTION("ZTE zx2967 thermal driver"); +MODULE_LICENSE("GPL v2");