From patchwork Mon Sep 19 03:49:13 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 607597 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 E76CCECAAD3 for ; Mon, 19 Sep 2022 03:49:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229609AbiISDtf (ORCPT ); Sun, 18 Sep 2022 23:49:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59682 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229676AbiISDte (ORCPT ); Sun, 18 Sep 2022 23:49:34 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 347D4C29; Sun, 18 Sep 2022 20:49:32 -0700 (PDT) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxkOC+5idjAnQdAA--.45929S2; Mon, 19 Sep 2022 11:49:27 +0800 (CST) From: Yinbo Zhu To: "Rafael J . Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zhanghongchen , Yinbo Zhu Subject: [PATCH v1 1/3] MAINTAINERS: add maintainer for thermal driver for ls2k SoCs Date: Mon, 19 Sep 2022 11:49:13 +0800 Message-Id: <20220919034915.26912-1-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxkOC+5idjAnQdAA--.45929S2 X-Coremail-Antispam: 1UD129KBjvdXoWrtw4fGryrtrWUKFykGF4fGrg_yoWfZwb_AF 1Iqa1xZa18AF12kaykur93t343Zws7GF1rA3Z7t39rA3srtayayFZ0y3Za9w48Cr4UuFyf ta97Gr1I9r12qjkaLaAFLSUrUUUUUb8apTn2vfkv8UJUUUU8Yxn0WfASr-VFAUDa7-sFnT 9fnUUIcSsGvfJTRUUUbsAFF20E14v26r4j6ryUM7CY07I20VC2zVCF04k26cxKx2IYs7xG 6rWj6s0DM7CIcVAFz4kK6r1j6r18M28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8w A2z4x0Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_ Gr1UM28EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVWxJr 0_GcWle2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2 Y2ka0xkIwI1lc2xSY4AK6svPMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r 4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF 67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2I x0cI8IcVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2 z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnU UI43ZEXa7VUbXdbUUUUUU== X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Add zhanghongchen and myself as maintainer of the loongson 2k soc series thermal driver. Signed-off-by: Yinbo Zhu --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 589517372408..e6d29601065c 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11899,6 +11899,14 @@ F: drivers/*/*loongarch* F: Documentation/loongarch/ F: Documentation/translations/zh_CN/loongarch/ +LOONGSON 2K SOC SERIES THERMAL DRIVER +M: zhanghongchen +M: Yinbo Zhu +L: linux-pm@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/thermal/ls2k-thermal.yaml +F: drivers/thermal/ls2k_thermal.c + LSILOGIC MPT FUSION DRIVERS (FC/SAS/SPI) M: Sathya Prakash M: Sreekanth Reddy From patchwork Mon Sep 19 03:49:14 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 607906 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 C0F2AECAAA1 for ; Mon, 19 Sep 2022 03:49:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229743AbiISDtg (ORCPT ); Sun, 18 Sep 2022 23:49:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59684 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229673AbiISDte (ORCPT ); Sun, 18 Sep 2022 23:49:34 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 4597DCDB; Sun, 18 Sep 2022 20:49:32 -0700 (PDT) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxkOC+5idjAnQdAA--.45929S3; Mon, 19 Sep 2022 11:49:27 +0800 (CST) From: Yinbo Zhu To: "Rafael J . Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zhanghongchen , Yinbo Zhu Subject: [PATCH v1 2/3] dt-bindings: thermal: Convert ls2k to json-schema Date: Mon, 19 Sep 2022 11:49:14 +0800 Message-Id: <20220919034915.26912-2-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220919034915.26912-1-zhuyinbo@loongson.cn> References: <20220919034915.26912-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxkOC+5idjAnQdAA--.45929S3 X-Coremail-Antispam: 1UD129KBjvJXoW7Kw18Cw1kWF1xCF13WF17KFg_yoW8Wr4xpF 17CF1Dur4v9F17Aw43GFy8Cws0yrZYyF9rZrn29w15trn8JF9aq3yak34DZayfCr4UKFW7 uFWF9w4jkw1qy3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPm14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r4j6ryUM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UM2 8EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVWxJr0_GcWl e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI 8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwAC jcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0x kIwI1lc2xSY4AK6svPMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I 3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxV WUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8I cVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aV AFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZE Xa7VUjeWlDUUUUU== X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Convert the ls2k thermal binding to DT schema format using json-schema Signed-off-by: Yinbo Zhu --- .../bindings/thermal/ls2k-thermal.yaml | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/thermal/ls2k-thermal.yaml diff --git a/Documentation/devicetree/bindings/thermal/ls2k-thermal.yaml b/Documentation/devicetree/bindings/thermal/ls2k-thermal.yaml new file mode 100644 index 000000000000..44bc5d4626d1 --- /dev/null +++ b/Documentation/devicetree/bindings/thermal/ls2k-thermal.yaml @@ -0,0 +1,51 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/thermal/ls2k-thermal.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Thermal sensors on loongson 2k SoCs + +maintainers: + - zhanghongchen + - Yinbo Zhu + +properties: + compatible: + const: loongson,2k-thermal + + reg: + maxItems: 1 + + id: + const: 0 + + interrupt-parent: + maxItems: 1 + + interrupts: + maxItems: 1 + + "#thermal-sensor-cells": + const: 1 + +required: + - compatible + - reg + - id + - interrupt-parent + - interrupts + - '#thermal-sensor-cells' + +additionalProperties: false + +examples: + - | + tsensor: tsensor@1fe01500 { + compatible = "loongson,2k-tsensor"; + reg = <0 0x1fe01500 0 0x30>; + id = <0>; + interrupt-parent = <&icu>; + interrupts = <7>; + #thermal-sensor-cells = <1>; + }; From patchwork Mon Sep 19 03:49:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yinbo Zhu X-Patchwork-Id: 607596 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 B4349C6FA90 for ; Mon, 19 Sep 2022 03:49:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229671AbiISDth (ORCPT ); Sun, 18 Sep 2022 23:49:37 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229685AbiISDte (ORCPT ); Sun, 18 Sep 2022 23:49:34 -0400 Received: from loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3338AC1F; Sun, 18 Sep 2022 20:49:32 -0700 (PDT) Received: from localhost.localdomain (unknown [10.180.13.64]) by localhost.localdomain (Coremail) with SMTP id AQAAf8CxkOC+5idjAnQdAA--.45929S4; Mon, 19 Sep 2022 11:49:28 +0800 (CST) From: Yinbo Zhu To: "Rafael J . Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Rob Herring , Krzysztof Kozlowski , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Cc: zhanghongchen , Yinbo Zhu Subject: [PATCH v1 3/3] thermal: ls2k: add thermal management support Date: Mon, 19 Sep 2022 11:49:15 +0800 Message-Id: <20220919034915.26912-3-zhuyinbo@loongson.cn> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20220919034915.26912-1-zhuyinbo@loongson.cn> References: <20220919034915.26912-1-zhuyinbo@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8CxkOC+5idjAnQdAA--.45929S4 X-Coremail-Antispam: 1UD129KBjvJXoW3Ww4UCrWUGryfGr4DCr4xXrb_yoW3Kr4kpF WUGFW5Ar4kKF47JwsrAr1DuFs0yrsFva4UZrZ3u34av3yrJry3Wryktr9YqF9akF9rGF45 Jrn8tFW5Crs8J3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUPm14x267AKxVWrJVCq3wAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jryl82xGYIkIc2 x26xkF7I0E14v26ryj6s0DM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UM2 8EF7xvwVC2z280aVAFwI0_Cr1j6rxdM28EF7xvwVC2z280aVCY1x0267AKxVWxJr0_GcWl e2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E2Ix0cI 8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJVW8JwAC jcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lFIxGxcIEc7CjxVA2Y2ka0x kIwI1lc2xSY4AK6svPMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I 3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxV WUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8I cVCY1x0267AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aV AFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZE Xa7VUbdOz7UUUUU== X-CM-SenderInfo: 52kx5xhqerqz5rrqw2lrqou0/ Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org This patch adds the support for loongson2k thermal sensor controller, which can support maximum 3 sensors. It's based on thermal of framework: - Trip points defined in device tree. - Cpufreq as cooling device registered in loongson2k cpufreq driver. - Pwm fan as cooling device registered in hwmon pwm-fan driver. Signed-off-by: zhanghongchen Signed-off-by: Yinbo Zhu --- drivers/thermal/Kconfig | 10 ++ drivers/thermal/Makefile | 1 + drivers/thermal/ls2k_thermal.c | 244 +++++++++++++++++++++++++++++++++ 3 files changed, 255 insertions(+) create mode 100644 drivers/thermal/ls2k_thermal.c diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index e052dae614eb..04f5c044bc94 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -504,4 +504,14 @@ 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 LOONGSON2K_THERMAL + tristate "Loongson 2K SOC series thermal driver" + depends on OF + default m + help + Support for Thermal driver found on Loongson 2K SOC series platforms. + It supports one critical trip point and one passive trip point. The + cpufreq and the pwm fan is used as the cooling device to throttle CPUs + when the passive trip is crossed. + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index def8e1a0399c..5b665b5d7edc 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_LOONGSON2K_THERMAL) += ls2k_thermal.o diff --git a/drivers/thermal/ls2k_thermal.c b/drivers/thermal/ls2k_thermal.c new file mode 100644 index 000000000000..13d1345d3b06 --- /dev/null +++ b/drivers/thermal/ls2k_thermal.c @@ -0,0 +1,244 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Author: zhanghongchen + * Yinbo Zhu + * Copyright (C) 2022-2023 Loongson Technology Corporation Limited + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include "thermal_hwmon.h" + +#define LS2K_SOC_DEFAULT_SENSOR 0 +#define LS2K_SOC_MAX_SENSOR_NUM 3 + +#define LS2K_TSENSOR_CTRL_HI 0x0 +#define LS2K_TSENSOR_CTRL_LO 0x8 +#define LS2K_TSENSOR_STATUS 0x10 +#define LS2K_TSENSOR_OUT 0x14 + +struct ls2k_thermal_data { + struct thermal_zone_device *tzd; + int irq; + int id; + void __iomem *regs; + struct platform_device *pdev; + u16 ctrl_low_val; + u16 ctrl_hi_val; +}; + +/** + * @low : temperature in degree + * @high: temperature in degree + */ +static int ls2k_tsensor_set(struct ls2k_thermal_data *data, + int low, int high, bool enable) +{ + u64 reg_ctrl = 0; + int reg_off = data->id * 2; + + if (low > high) + return -EINVAL; + + low = low < -100 ? -100 : low; + high = high > 155 ? 155 : high; + + low += 100; + high += 100; + + reg_ctrl |= low; + reg_ctrl |= enable ? 0x100 : 0; + writew(reg_ctrl, data->regs + LS2K_TSENSOR_CTRL_LO + reg_off); + + reg_ctrl = 0; + reg_ctrl |= high; + reg_ctrl |= enable ? 0x100 : 0; + writew(reg_ctrl, data->regs + LS2K_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static int ls2k_thermal_get_temp(void *__data, int *temp) +{ + struct ls2k_thermal_data *data = __data; + u32 reg_val; + + reg_val = readl(data->regs + LS2K_TSENSOR_OUT); + *temp = ((reg_val & 0xff) - 100) * 1000; + + return 0; +} + +static irqreturn_t ls2k_thermal_alarm_irq(int irq, void *dev) +{ + struct ls2k_thermal_data *data = dev; + + /* clear interrupt */ + writeb(0x3, data->regs + LS2K_TSENSOR_STATUS); + + disable_irq_nosync(irq); + + return IRQ_WAKE_THREAD; +} + +static irqreturn_t ls2k_thermal_irq_thread(int irq, void *dev) +{ + struct ls2k_thermal_data *data = dev; + + thermal_zone_device_update(data->tzd, + THERMAL_EVENT_UNSPECIFIED); + enable_irq(data->irq); + + return IRQ_HANDLED; +} + +static int ls2k_thermal_set_trips(void *data, int low, int high) +{ + return ls2k_tsensor_set(data, low/1000, high/1000, true); +} + +static const struct thermal_zone_of_device_ops ls2k_of_thermal_ops = { + .get_temp = ls2k_thermal_get_temp, + .set_trips = ls2k_thermal_set_trips, +}; + +static int ls2k_thermal_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct resource *res; + struct ls2k_thermal_data *data; + int ret; + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + data->pdev = pdev; + platform_set_drvdata(pdev, data); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + data->regs = devm_ioremap(dev, res->start, resource_size(res)); + if (IS_ERR(data->regs)) { + dev_err(dev, "failed to get io address\n"); + return PTR_ERR(data->regs); + } + + /* get irq */ + data->irq = platform_get_irq(pdev, 0); + if (data->irq < 0) + return data->irq; + + /* get id */ + if (of_property_read_u32(dev->of_node, "id", &data->id)) { + dev_err(dev, "not found id property!\n"); + data->id = LS2K_SOC_DEFAULT_SENSOR; + } + + if (data->id > LS2K_SOC_MAX_SENSOR_NUM) { + dev_err(dev, "sensor id error,must be in <0 ~ %d>\n", + LS2K_SOC_MAX_SENSOR_NUM); + return -EINVAL; + } + + writeb(0xff, data->regs + LS2K_TSENSOR_STATUS); + + ls2k_tsensor_set(data, 0, 0, false); + + data->tzd = devm_thermal_zone_of_sensor_register(&pdev->dev, + data->id, data, + &ls2k_of_thermal_ops); + if (IS_ERR(data->tzd)) { + ret = PTR_ERR(data->tzd); + data->tzd = NULL; + dev_err(&pdev->dev, "failed to register %d\n", ret); + return ret; + } + + ret = devm_request_threaded_irq(dev, data->irq, + ls2k_thermal_alarm_irq, ls2k_thermal_irq_thread, + IRQF_ONESHOT, "ls2k_thermal", data); + if (ret < 0) { + dev_err(dev, "failed to request alarm irq: %d\n", ret); + return ret; + } + + /* + * Thermal_zone doesn't enable hwmon as default, + * enable it here + */ + data->tzd->tzp->no_hwmon = false; + ret = thermal_add_hwmon_sysfs(data->tzd); + if (ret) { + dev_err(dev, "failed to add hwmon sysfs interface %d\n", ret); + return ret; + } + + return 0; +} + +int ls2k_thermal_remove(struct platform_device *pdev) +{ + struct ls2k_thermal_data *data = platform_get_drvdata(pdev); + int reg_off = data->id * 2; + + /* disable interrupt */ + writew(0, data->regs + LS2K_TSENSOR_CTRL_LO + reg_off); + writew(0, data->regs + LS2K_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static const struct of_device_id of_ls2k_thermal_match[] = { + { .compatible = "loongson,2k-tsensor",}, + { /* end */ } +}; +MODULE_DEVICE_TABLE(of, of_ls2k_thermal_match); + +#ifdef CONFIG_PM_SLEEP +static int ls2k_thermal_suspend(struct device *dev) +{ + struct ls2k_thermal_data *data = dev_get_drvdata(dev); + int reg_off = data->id * 2; + + data->ctrl_low_val = readw(data->regs + LS2K_TSENSOR_CTRL_LO + reg_off); + data->ctrl_hi_val = readw(data->regs + LS2K_TSENSOR_CTRL_HI + reg_off); + + writew(0, data->regs + LS2K_TSENSOR_CTRL_LO + reg_off); + writew(0, data->regs + LS2K_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static int ls2k_thermal_resume(struct device *dev) +{ + struct ls2k_thermal_data *data = dev_get_drvdata(dev); + int reg_off = data->id * 2; + + writew(data->ctrl_low_val, data->regs + LS2K_TSENSOR_CTRL_LO + reg_off); + writew(data->ctrl_hi_val, data->regs + LS2K_TSENSOR_CTRL_HI + reg_off); + + return 0; +} + +static SIMPLE_DEV_PM_OPS(ls2k_thermal_pm_ops, + ls2k_thermal_suspend, ls2k_thermal_resume); +#endif + +static struct platform_driver ls2k_thermal_driver = { + .driver = { + .name = "ls2k_thermal", +#ifdef CONFIG_PM_SLEEP + .pm = &ls2k_thermal_pm_ops, +#endif + .of_match_table = of_ls2k_thermal_match, + }, + .probe = ls2k_thermal_probe, + .remove = ls2k_thermal_remove, +}; +module_platform_driver(ls2k_thermal_driver);