From patchwork Mon Jun 6 11:44:49 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Caesar Wang X-Patchwork-Id: 9157931 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 F276E60467 for ; Mon, 6 Jun 2016 11:45:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E374126907 for ; Mon, 6 Jun 2016 11:45:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D7E122780C; Mon, 6 Jun 2016 11:45:59 +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 AC76926907 for ; Mon, 6 Jun 2016 11:45:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751452AbcFFLpe (ORCPT ); Mon, 6 Jun 2016 07:45:34 -0400 Received: from mail-pa0-f65.google.com ([209.85.220.65]:33727 "EHLO mail-pa0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751365AbcFFLpa (ORCPT ); Mon, 6 Jun 2016 07:45:30 -0400 Received: by mail-pa0-f65.google.com with SMTP id di3so11696544pab.0; Mon, 06 Jun 2016 04:45:30 -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=9+KnuQWqsTbg65huLRUgJZ2BPs8t1xfqHBIV5gIDll0=; b=hTKklqCXyfOnelxxMBmkKn0DhY4MXHtuM6CdrQVitnaXxdgpYqjrfuYuFEqm5NGmEk QZjtBPQ4LizcOzry8g9EIGRay57eKiD0rv+k2h8iyFRjYAa3eCH8XFSQSMVPprCNirMp UvTsbIvq0dlhPjjbbBaMlKQMD5CYfC/yltfqPSUHQQ8apQi7cGwv4aV93aQ+gAVRNK/8 OLRnIg2h8ciSyTU9U/4QH+QefYaUkRbqtGnVI3Yw1Zzv6yS9OOf/E4fxILChx+vFFB0v 4ekF7CFNcO2aTaag1KJtuQr4mU/XidXu6SlL+TT829Gy8v2MhuEv7o+TTsM1IUNfPXCh 4/Tg== X-Gm-Message-State: ALyK8tI5fP/1HHIDI9WW9R403TZQOO92hsVtx5HEmBjq+0AStF5Dyd6YBmHt1Je/i5HGQQ== X-Received: by 10.66.76.196 with SMTP id m4mr24014344paw.54.1465213529905; Mon, 06 Jun 2016 04:45:29 -0700 (PDT) Received: from localhost.localdomain ([103.29.142.67]) by smtp.gmail.com with ESMTPSA id g82sm27196446pfj.22.2016.06.06.04.45.25 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 06 Jun 2016 04:45:29 -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 v5 5/5] thermal: rockchip: add the set_trips function Date: Mon, 6 Jun 2016 19:44:49 +0800 Message-Id: <1465213489-14898-6-git-send-email-wxt@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1465213489-14898-1-git-send-email-wxt@rock-chips.com> References: <1465213489-14898-1-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 Tested-by: Stephen Barber --- Changes in v5: - add the tested by Steve. 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 5d491f1..8175cdb 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,