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: 9137853 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 0F7096075A for ; Fri, 27 May 2016 08:24:26 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F2DD62780C for ; Fri, 27 May 2016 08:24:25 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E771A28093; Fri, 27 May 2016 08:24:25 +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=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 72F212780C for ; Fri, 27 May 2016 08:24:25 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1b6D4D-0001Xa-3P; Fri, 27 May 2016 08:24:25 +0000 Received: from mail-pf0-f193.google.com ([209.85.192.193]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1b6D49-0001LD-89; Fri, 27 May 2016 08:24:22 +0000 Received: by mail-pf0-f193.google.com with SMTP id f144so5217184pfa.2; Fri, 27 May 2016 01:24:00 -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=i8Acl1K4vv6u0HEOUHPiGlnJ3j/50O3nGL0Tj2c2tmPzEcy0rnHhdosPiOS9noXz/t EvQRVkVTt6nmDaUMKXRnbPcdHExDKwhnRQDi2/kFU8G8xNhHBMRz6l9Ozn/YEuC4tw6+ 9L24YWGNX+iqebOXlxCWUlBj5jRHWIJK58RfGkiIAkqKajoF0idNULCTq8rHCTyrMarQ V3lu4+qaYSeS/pOkkagtamd678311VkJT/AJlNp8YIlArHPcQAJD0NI6sn2YAd3bPiWk H9SgPgzvoXAJcdzh2cgdd55aePbIneX9PlmHf4TMzR1mSI5WInbOmcCzy6i6qFXCpN9L RLRg== X-Gm-Message-State: ALyK8tLJpX4MCdC3HYwd2BjS4bQ77WaBh5X1fcWpB4GCwA9tKiJ9UfhANexZIr/T2FxpsA== 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 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> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160527_012421_526126_D901F05B X-CRM114-Status: GOOD ( 12.14 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: huangtao@rock-chips.com, javi.merino@arm.com, Heiko Stuebner , dmitry.torokhov@gmail.com, peter@piie.net, dianders@chromium.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org, smbarber@google.com, cf@rock-chips.com, briannorris@google.com, Zhang Rui , linux-arm-kernel@lists.infradead.org, Caesar Wang MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.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,