From patchwork Fri May 27 08:23:28 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caesar Wang X-Patchwork-Id: 9137859 X-Patchwork-Delegate: eduardo.valentin@ti.com Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 2B36C6075A for ; Fri, 27 May 2016 08:24:56 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1ACBD1FFD6 for ; Fri, 27 May 2016 08:24:56 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 0F4FA2780C; Fri, 27 May 2016 08:24:56 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 456DD1FFD6 for ; Fri, 27 May 2016 08:24:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932583AbcE0IYd (ORCPT ); Fri, 27 May 2016 04:24:33 -0400 Received: from mail-pf0-f193.google.com ([209.85.192.193]:33210 "EHLO mail-pf0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932802AbcE0IYG (ORCPT ); Fri, 27 May 2016 04:24:06 -0400 Received: by mail-pf0-f193.google.com with SMTP id b124so11734527pfb.0; Fri, 27 May 2016 01:24:01 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=Vlu42xb99clUkXtufkj7CRFo1Q8/+ZXrpNJW6cCZnfk=; b=A4kFl+AlMbg3nH/i+mgBqVEX8xZWWMRY1BvLN+EaY8bstgeKWb6tIwyMHmhGMgFx3u +I0cMJWI/DYiaLaRp5vQU/YIy+cISUHkBze4jr6j+dUzci3Bts/pQMTU9ZuP9J5LF94l kxgM2E89OG1I9WA1uJiBGo4tRNNKnRTC+bN5rNfgoAq1Duy8re9QwfOyHwwkHY8x+r3R pHhMMup+3TrzTKw5duuVpVOSnGtc7uhD7m1WYbBOKZj04xMMLwjzfZGzKlEXXivQlgLy Ed0sXMmqTVA6rpRD+ERGrMudGEvht9uNfdjwsInHMD8Fgyeyu49Fd2Ru+uZPJJqSUjJx ZgSQ== X-Gm-Message-State: ALyK8tKSYtvWGmNnk+h1p4d5wnhQGjFCgVyyW6LG4bQpud9BJYs7ru17wK6U8Ltc1diJsg== X-Received: by 10.98.67.7 with SMTP id q7mr20549528pfa.70.1464337440488; Fri, 27 May 2016 01:24:00 -0700 (PDT) Received: from localhost.localdomain ([103.29.142.67]) by smtp.gmail.com with ESMTPSA id w27sm11551805pfi.24.2016.05.27.01.23.56 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 27 May 2016 01:23:59 -0700 (PDT) From: Caesar Wang To: edubezval@gmail.com, linux-pm@vger.kernel.org Cc: Heiko Stuebner , dianders@chromium.org, briannorris@google.com, smbarber@google.com, linux-rockchip@lists.infradead.org, cf@rock-chips.com, huangtao@rock-chips.com, dmitry.torokhov@gmail.com, javi.merino@arm.com, peter@piie.net, Caesar Wang , Zhang Rui , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 4/4] thermal: rockchip: add the set_trips function Date: Fri, 27 May 2016 16:23:28 +0800 Message-Id: <1464337408-7123-5-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1464337408-7123-1-git-send-email-wxt@rock-chips.com> References: <1464337408-7123-1-git-send-email-wxt@rock-chips.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Whenever the current temperature is updated, the trip points immediately below and above the current temperature are found. A sensor driver callback `set_trips' is then called with the temperatures. Lastly, The sensor will trigger the hardware high temperature interrupts to increase the sampleing rate and throttle frequency to limit the temperature rising When performing passive cooling. Signed-off-by: Caesar Wang Cc: Zhang Rui Cc: Eduardo Valentin Cc: linux-pm@vger.kernel.org --- Changes in v4: None Changes in v3: None Changes in v2: None drivers/thermal/rockchip_thermal.c | 39 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c index 86a1ab0..39e2eec 100644 --- a/drivers/thermal/rockchip_thermal.c +++ b/drivers/thermal/rockchip_thermal.c @@ -96,6 +96,7 @@ struct chip_tsadc_table { * @initialize: SoC special initialize tsadc controller method * @irq_ack: clear the interrupt * @get_temp: get the temperature + * @set_alarm_temp: set the high temperature interrupt * @set_tshut_temp: set the hardware-controlled shutdown temperature * @set_tshut_mode: set the hardware-controlled shutdown mode * @table: the chip-specific conversion table @@ -119,6 +120,8 @@ struct rockchip_tsadc_chip { /* Per-sensor methods */ int (*get_temp)(struct chip_tsadc_table table, int chn, void __iomem *reg, int *temp); + void (*set_alarm_temp)(struct chip_tsadc_table table, + int chn, void __iomem *reg, int temp); void (*set_tshut_temp)(struct chip_tsadc_table table, int chn, void __iomem *reg, int temp); void (*set_tshut_mode)(int chn, void __iomem *reg, enum tshut_mode m); @@ -183,6 +186,7 @@ struct rockchip_thermal_data { #define TSADCV2_INT_EN 0x08 #define TSADCV2_INT_PD 0x0c #define TSADCV2_DATA(chn) (0x20 + (chn) * 0x04) +#define TSADCV2_COMP_INT(chn) (0x30 + (chn) * 0x04) #define TSADCV2_COMP_SHUT(chn) (0x40 + (chn) * 0x04) #define TSADCV2_HIGHT_INT_DEBOUNCE 0x60 #define TSADCV2_HIGHT_TSHUT_DEBOUNCE 0x64 @@ -628,6 +632,20 @@ static int rk_tsadcv2_get_temp(struct chip_tsadc_table table, return rk_tsadcv2_code_to_temp(table, val, temp); } +static void rk_tsadcv2_alarm_temp(struct chip_tsadc_table table, + int chn, void __iomem *regs, int temp) +{ + u32 alarm_value, int_en; + + alarm_value = rk_tsadcv2_temp_to_code(table, temp); + writel_relaxed(alarm_value & table.data_mask, + regs + TSADCV2_COMP_INT(chn)); + + int_en = readl_relaxed(regs + TSADCV2_INT_EN); + int_en |= TSADCV2_INT_SRC_EN(chn); + writel_relaxed(int_en, regs + TSADCV2_INT_EN); +} + static void rk_tsadcv2_tshut_temp(struct chip_tsadc_table table, int chn, void __iomem *regs, int temp) { @@ -670,6 +688,7 @@ static const struct rockchip_tsadc_chip rk3228_tsadc_data = { .irq_ack = rk_tsadcv3_irq_ack, .control = rk_tsadcv3_control, .get_temp = rk_tsadcv2_get_temp, + .set_alarm_temp = rk_tsadcv2_alarm_temp, .set_tshut_temp = rk_tsadcv2_tshut_temp, .set_tshut_mode = rk_tsadcv2_tshut_mode, @@ -694,6 +713,7 @@ static const struct rockchip_tsadc_chip rk3288_tsadc_data = { .irq_ack = rk_tsadcv2_irq_ack, .control = rk_tsadcv2_control, .get_temp = rk_tsadcv2_get_temp, + .set_alarm_temp = rk_tsadcv2_alarm_temp, .set_tshut_temp = rk_tsadcv2_tshut_temp, .set_tshut_mode = rk_tsadcv2_tshut_mode, @@ -718,6 +738,7 @@ static const struct rockchip_tsadc_chip rk3366_tsadc_data = { .irq_ack = rk_tsadcv3_irq_ack, .control = rk_tsadcv3_control, .get_temp = rk_tsadcv2_get_temp, + .set_alarm_temp = rk_tsadcv2_alarm_temp, .set_tshut_temp = rk_tsadcv2_tshut_temp, .set_tshut_mode = rk_tsadcv2_tshut_mode, @@ -742,6 +763,7 @@ static const struct rockchip_tsadc_chip rk3368_tsadc_data = { .irq_ack = rk_tsadcv2_irq_ack, .control = rk_tsadcv2_control, .get_temp = rk_tsadcv2_get_temp, + .set_alarm_temp = rk_tsadcv2_alarm_temp, .set_tshut_temp = rk_tsadcv2_tshut_temp, .set_tshut_mode = rk_tsadcv2_tshut_mode, @@ -766,6 +788,7 @@ static const struct rockchip_tsadc_chip rk3399_tsadc_data = { .irq_ack = rk_tsadcv3_irq_ack, .control = rk_tsadcv3_control, .get_temp = rk_tsadcv2_get_temp, + .set_alarm_temp = rk_tsadcv2_alarm_temp, .set_tshut_temp = rk_tsadcv2_tshut_temp, .set_tshut_mode = rk_tsadcv2_tshut_mode, @@ -826,6 +849,21 @@ static irqreturn_t rockchip_thermal_alarm_irq_thread(int irq, void *dev) return IRQ_HANDLED; } +static int rockchip_thermal_set_trips(void *_sensor, int low, int high) +{ + struct rockchip_thermal_sensor *sensor = _sensor; + struct rockchip_thermal_data *thermal = sensor->thermal; + const struct rockchip_tsadc_chip *tsadc = thermal->chip; + + dev_dbg(&thermal->pdev->dev, "%s: sensor %d: low: %d, high %d\n", + __func__, sensor->id, low, high); + + tsadc->set_alarm_temp(tsadc->table, + sensor->id, thermal->regs, high); + + return 0; +} + static int rockchip_thermal_get_temp(void *_sensor, int *out_temp) { struct rockchip_thermal_sensor *sensor = _sensor; @@ -843,6 +881,7 @@ static int rockchip_thermal_get_temp(void *_sensor, int *out_temp) static const struct thermal_zone_of_device_ops rockchip_of_thermal_ops = { .get_temp = rockchip_thermal_get_temp, + .set_trips = rockchip_thermal_set_trips, }; static int rockchip_configure_from_dt(struct device *dev,