From patchwork Thu Jul 7 09:06:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dawei Chien X-Patchwork-Id: 9218615 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 460BA60467 for ; Thu, 7 Jul 2016 09:07:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 342B0287CE for ; Thu, 7 Jul 2016 09:07:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 28B89287D0; Thu, 7 Jul 2016 09:07:48 +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, UNPARSEABLE_RELAY 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 29B76287CE for ; Thu, 7 Jul 2016 09:07:47 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bL5He-0002YC-IH; Thu, 07 Jul 2016 09:07:46 +0000 Received: from [210.61.82.184] (helo=mailgw02.mediatek.com) by bombadil.infradead.org with esmtp (Exim 4.85_2 #1 (Red Hat Linux)) id 1bL5H4-0002DG-0K; Thu, 07 Jul 2016 09:07:13 +0000 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw02.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 1577148182; Thu, 07 Jul 2016 17:06:40 +0800 Received: from localhost.localdomain (10.21.14.116) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.266.1; Thu, 7 Jul 2016 17:06:39 +0800 From: Dawei Chien To: Zhang Rui , Eduardo Valentin Subject: [PATCH 2/3] thermal: Add Mediatek thermal driver for mt2701. Date: Thu, 7 Jul 2016 17:06:25 +0800 Message-ID: <1467882386-40544-3-git-send-email-dawei.chien@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1467882386-40544-1-git-send-email-dawei.chien@mediatek.com> References: <1467882386-40544-1-git-send-email-dawei.chien@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160707_020710_438998_CB2BCA16 X-CRM114-Status: GOOD ( 25.75 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, srv_heupstream@mediatek.com, Pawel Moll , Ian Campbell , Erin Lo , linux-pm@vger.kernel.org, Dawei Chien , Russell King , linux-kernel@vger.kernel.org, Fan Chen , Rob Herring , linux-mediatek@lists.infradead.org, Sascha Hauer , Kumar Gala , Matthias Brugger , Yingjoe Chen , Eddie Huang , linux-arm-kernel@lists.infradead.org Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds support for mt2701 chip to mtk_thermal.c, and integrate both mt8173 and mt2701 on the same driver. MT8173 has four banks and five sensors, and MT2701 has only one bank and three sensors. Signed-off-by: Dawei Chien --- drivers/thermal/mtk_thermal.c | 258 ++++++++++++++++++++++++++--------------- 1 file changed, 165 insertions(+), 93 deletions(-) diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c index 262ab0a..860f2e2 100644 --- a/drivers/thermal/mtk_thermal.c +++ b/drivers/thermal/mtk_thermal.c @@ -2,6 +2,7 @@ * Copyright (c) 2015 MediaTek Inc. * Author: Hanyi Wu * Sascha Hauer + * Dawei Chien * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as @@ -21,6 +22,7 @@ #include #include #include +#include #include #include #include @@ -88,6 +90,7 @@ #define TEMP_ADCVALIDMASK_VALID_HIGH BIT(5) #define TEMP_ADCVALIDMASK_VALID_POS(bit) (bit) +/* MT8173 thermal sensors */ #define MT8173_TS1 0 #define MT8173_TS2 1 #define MT8173_TS3 2 @@ -97,35 +100,62 @@ /* AUXADC channel 11 is used for the temperature sensors */ #define MT8173_TEMP_AUXADC_CHANNEL 11 -/* The total number of temperature sensors in the MT8173 */ -#define MT8173_NUM_SENSORS 5 - -/* The number of banks in the MT8173 */ -#define MT8173_NUM_ZONES 4 - -/* The number of sensing points per bank */ -#define MT8173_NUM_SENSORS_PER_ZONE 4 - /* Layout of the fuses providing the calibration data */ -#define MT8173_CALIB_BUF0_VALID BIT(0) -#define MT8173_CALIB_BUF1_ADC_GE(x) (((x) >> 22) & 0x3ff) -#define MT8173_CALIB_BUF0_VTS_TS1(x) (((x) >> 17) & 0x1ff) -#define MT8173_CALIB_BUF0_VTS_TS2(x) (((x) >> 8) & 0x1ff) -#define MT8173_CALIB_BUF1_VTS_TS3(x) (((x) >> 0) & 0x1ff) -#define MT8173_CALIB_BUF2_VTS_TS4(x) (((x) >> 23) & 0x1ff) -#define MT8173_CALIB_BUF2_VTS_TSABB(x) (((x) >> 14) & 0x1ff) -#define MT8173_CALIB_BUF0_DEGC_CALI(x) (((x) >> 1) & 0x3f) -#define MT8173_CALIB_BUF0_O_SLOPE(x) (((x) >> 26) & 0x3f) +#define CALIB_BUF0_VALID BIT(0) +#define CALIB_BUF1_ADC_GE(x) (((x) >> 22) & 0x3ff) +#define CALIB_BUF0_VTS_TS1(x) (((x) >> 17) & 0x1ff) +#define CALIB_BUF0_VTS_TS2(x) (((x) >> 8) & 0x1ff) +#define CALIB_BUF1_VTS_TS3(x) (((x) >> 0) & 0x1ff) +#define CALIB_BUF2_VTS_TS4(x) (((x) >> 23) & 0x1ff) +#define CALIB_BUF2_VTS_TS5(x) (((x) >> 14) & 0x1ff) +#define CALIB_BUF0_DEGC_CALI(x) (((x) >> 1) & 0x3f) +#define CALIB_BUF0_O_SLOPE(x) (((x) >> 26) & 0x3f) + +#define NVMEM_TS1 0 +#define NVMEM_TS2 1 +#define NVMEM_TS3 2 +#define NVMEM_TS4 3 +#define NVMEM_TS5 4 + +/* MT2701 thermal sensors */ +#define MT2701_TS1 0 +#define MT2701_TS2 1 +#define MT2701_TSABB 2 + +/* AUXADC channel 11 is used for the temperature sensors */ +#define MT2701_TEMP_AUXADC_CHANNEL 11 #define THERMAL_NAME "mtk-thermal" +/* Maximum support banks */ +#define MAX_NUM_BANK 5 + struct mtk_thermal; +struct thermal_bank_cfg { + unsigned int num_sensors; + unsigned int sensors[MAX_NUM_BANK]; +}; + struct mtk_thermal_bank { struct mtk_thermal *mt; int id; }; +struct mtk_thermal_sense_point { + int msr; + int adcpnp; +}; + +struct mtk_thermal_data { + struct thermal_bank_cfg bank_data[MAX_NUM_BANK]; + struct mtk_thermal_sense_point sensing_points[MAX_NUM_BANK]; + int sensor_mux_values[MAX_NUM_BANK]; + s32 num_banks; + s32 num_sensors; + s32 auxadc_channel; +}; + struct mtk_thermal { struct device *dev; void __iomem *thermal_base; @@ -133,27 +163,20 @@ struct mtk_thermal { struct clk *clk_peri_therm; struct clk *clk_auxadc; - struct mtk_thermal_bank banks[MT8173_NUM_ZONES]; - + struct mtk_thermal_bank banks[MAX_NUM_BANK]; + const struct mtk_thermal_data *conf; /* lock: for getting and putting banks */ struct mutex lock; + struct thermal_zone_device *tzd; /* Calibration values */ s32 adc_ge; s32 degc_cali; s32 o_slope; - s32 vts[MT8173_NUM_SENSORS]; - -}; - -struct mtk_thermal_bank_cfg { - unsigned int num_sensors; - unsigned int sensors[MT8173_NUM_SENSORS_PER_ZONE]; + s32 vts[MAX_NUM_BANK]; }; -static const int sensor_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 }; - -/* +/** * The MT8173 thermal controller has four banks. Each bank can read up to * four temperature sensors simultaneously. The MT8173 has a total of 5 * temperature sensors. We use each bank to measure a certain area of the @@ -166,42 +189,76 @@ static const int sensor_mux_values[MT8173_NUM_SENSORS] = { 0, 1, 2, 3, 16 }; * data, and this indeed needs the temperatures of the individual banks * for making better decisions. */ -static const struct mtk_thermal_bank_cfg bank_data[] = { - { - .num_sensors = 2, - .sensors = { MT8173_TS2, MT8173_TS3 }, - }, { - .num_sensors = 2, - .sensors = { MT8173_TS2, MT8173_TS4 }, - }, { - .num_sensors = 3, - .sensors = { MT8173_TS1, MT8173_TS2, MT8173_TSABB }, - }, { - .num_sensors = 1, - .sensors = { MT8173_TS2 }, +static const struct mtk_thermal_data mt8173_thermal_data = { + .auxadc_channel = MT8173_TEMP_AUXADC_CHANNEL, + .num_banks = 4, + .num_sensors = 5, + .bank_data = { + { + .num_sensors = 2, + .sensors = { MT8173_TS2, MT8173_TS3 }, + }, { + .num_sensors = 2, + .sensors = { MT8173_TS2, MT8173_TS4 }, + }, { + .num_sensors = 3, + .sensors = { MT8173_TS1, MT8173_TS2, MT8173_TSABB }, + }, { + .num_sensors = 1, + .sensors = { MT8173_TS2 }, + }, }, + .sensing_points = { + { + .msr = TEMP_MSR0, + .adcpnp = TEMP_ADCPNP0, + }, { + .msr = TEMP_MSR1, + .adcpnp = TEMP_ADCPNP1, + }, { + .msr = TEMP_MSR2, + .adcpnp = TEMP_ADCPNP2, + }, { + .msr = TEMP_MSR3, + .adcpnp = TEMP_ADCPNP3, + }, + }, + .sensor_mux_values = { 0, 1, 2, 3, 16 }, }; -struct mtk_thermal_sense_point { - int msr; - int adcpnp; -}; - -static const struct mtk_thermal_sense_point - sensing_points[MT8173_NUM_SENSORS_PER_ZONE] = { - { - .msr = TEMP_MSR0, - .adcpnp = TEMP_ADCPNP0, - }, { - .msr = TEMP_MSR1, - .adcpnp = TEMP_ADCPNP1, - }, { - .msr = TEMP_MSR2, - .adcpnp = TEMP_ADCPNP2, - }, { - .msr = TEMP_MSR3, - .adcpnp = TEMP_ADCPNP3, +/** + * The MT2701 thermal controller has one bank, which can read up to + * three temperature sensors simultaneously. The MT2701 has a total of 3 + * temperature sensors. + * + * The thermal core only gets the maximum temperature of this one bank, + * so the bank concept wouldn't be necessary here. However, the SVS (Smart + * Voltage Scaling) unit makes its decisions based on the same bank + * data. + */ +static const struct mtk_thermal_data mt2701_thermal_data = { + .auxadc_channel = MT2701_TEMP_AUXADC_CHANNEL, + .num_banks = 1, + .num_sensors = 3, + .bank_data = { + { + .num_sensors = 3, + .sensors = { MT2701_TS1, MT2701_TS2, MT2701_TSABB }, + }, }, + .sensing_points = { + { + .msr = TEMP_MSR0, + .adcpnp = TEMP_ADCPNP0, + }, { + .msr = TEMP_MSR1, + .adcpnp = TEMP_ADCPNP1, + }, { + .msr = TEMP_MSR2, + .adcpnp = TEMP_ADCPNP2, + }, + }, + .sensor_mux_values = { 0, 1, 16}, }; /** @@ -270,13 +327,15 @@ static void mtk_thermal_put_bank(struct mtk_thermal_bank *bank) static int mtk_thermal_bank_temperature(struct mtk_thermal_bank *bank) { struct mtk_thermal *mt = bank->mt; + const struct mtk_thermal_data *conf = mt->conf; int i, temp = INT_MIN, max = INT_MIN; u32 raw; - for (i = 0; i < bank_data[bank->id].num_sensors; i++) { - raw = readl(mt->thermal_base + sensing_points[i].msr); + for (i = 0; i < conf->bank_data[bank->id].num_sensors; i++) { + raw = readl(mt->thermal_base + conf->sensing_points[i].msr); - temp = raw_to_mcelsius(mt, bank_data[bank->id].sensors[i], raw); + temp = raw_to_mcelsius(mt, conf->bank_data[bank->id].sensors[i], + raw); /* * The first read of a sensor often contains very high bogus @@ -299,7 +358,7 @@ static int mtk_read_temp(void *data, int *temperature) int i; int tempmax = INT_MIN; - for (i = 0; i < MT8173_NUM_ZONES; i++) { + for (i = 0; i < mt->conf->num_banks; i++) { struct mtk_thermal_bank *bank = &mt->banks[i]; mtk_thermal_get_bank(bank); @@ -322,7 +381,7 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num, u32 apmixed_phys_base, u32 auxadc_phys_base) { struct mtk_thermal_bank *bank = &mt->banks[num]; - const struct mtk_thermal_bank_cfg *cfg = &bank_data[num]; + const struct mtk_thermal_data *conf = mt->conf; int i; bank->id = num; @@ -368,7 +427,7 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num, * this value will be stored to TEMP_PNPMUXADDR (TEMP_SPARE0) * automatically by hw */ - writel(BIT(MT8173_TEMP_AUXADC_CHANNEL), mt->thermal_base + TEMP_ADCMUX); + writel(BIT(conf->auxadc_channel), mt->thermal_base + TEMP_ADCMUX); /* AHB address for auxadc mux selection */ writel(auxadc_phys_base + AUXADC_CON1_CLR_V, @@ -379,18 +438,18 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num, mt->thermal_base + TEMP_PNPMUXADDR); /* AHB value for auxadc enable */ - writel(BIT(MT8173_TEMP_AUXADC_CHANNEL), mt->thermal_base + TEMP_ADCEN); + writel(BIT(conf->auxadc_channel), mt->thermal_base + TEMP_ADCEN); /* AHB address for auxadc enable (channel 0 immediate mode selected) */ writel(auxadc_phys_base + AUXADC_CON1_SET_V, mt->thermal_base + TEMP_ADCENADDR); /* AHB address for auxadc valid bit */ - writel(auxadc_phys_base + AUXADC_DATA(MT8173_TEMP_AUXADC_CHANNEL), + writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel), mt->thermal_base + TEMP_ADCVALIDADDR); /* AHB address for auxadc voltage output */ - writel(auxadc_phys_base + AUXADC_DATA(MT8173_TEMP_AUXADC_CHANNEL), + writel(auxadc_phys_base + AUXADC_DATA(conf->auxadc_channel), mt->thermal_base + TEMP_ADCVOLTADDR); /* read valid & voltage are at the same register */ @@ -407,11 +466,12 @@ static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num, writel(TEMP_ADCWRITECTRL_ADC_MUX_WRITE, mt->thermal_base + TEMP_ADCWRITECTRL); - for (i = 0; i < cfg->num_sensors; i++) - writel(sensor_mux_values[cfg->sensors[i]], - mt->thermal_base + sensing_points[i].adcpnp); + for (i = 0; i < conf->bank_data[num].num_sensors; i++) + writel(conf->sensor_mux_values[conf->bank_data[num].sensors[i]], + mt->thermal_base + conf->sensing_points[i].adcpnp); - writel((1 << cfg->num_sensors) - 1, mt->thermal_base + TEMP_MONCTL0); + writel((1 << conf->bank_data[num].num_sensors) - 1, + mt->thermal_base + TEMP_MONCTL0); writel(TEMP_ADCWRITECTRL_ADC_PNP_WRITE | TEMP_ADCWRITECTRL_ADC_MUX_WRITE, @@ -442,7 +502,7 @@ static int mtk_thermal_get_calibration_data(struct device *dev, /* Start with default values */ mt->adc_ge = 512; - for (i = 0; i < MT8173_NUM_SENSORS; i++) + for (i = 0; i < mt->conf->num_sensors; i++) mt->vts[i] = 260; mt->degc_cali = 40; mt->o_slope = 0; @@ -467,15 +527,15 @@ static int mtk_thermal_get_calibration_data(struct device *dev, goto out; } - if (buf[0] & MT8173_CALIB_BUF0_VALID) { - mt->adc_ge = MT8173_CALIB_BUF1_ADC_GE(buf[1]); - mt->vts[MT8173_TS1] = MT8173_CALIB_BUF0_VTS_TS1(buf[0]); - mt->vts[MT8173_TS2] = MT8173_CALIB_BUF0_VTS_TS2(buf[0]); - mt->vts[MT8173_TS3] = MT8173_CALIB_BUF1_VTS_TS3(buf[1]); - mt->vts[MT8173_TS4] = MT8173_CALIB_BUF2_VTS_TS4(buf[2]); - mt->vts[MT8173_TSABB] = MT8173_CALIB_BUF2_VTS_TSABB(buf[2]); - mt->degc_cali = MT8173_CALIB_BUF0_DEGC_CALI(buf[0]); - mt->o_slope = MT8173_CALIB_BUF0_O_SLOPE(buf[0]); + if (buf[0] & CALIB_BUF0_VALID) { + mt->adc_ge = CALIB_BUF1_ADC_GE(buf[1]); + mt->vts[NVMEM_TS1] = CALIB_BUF0_VTS_TS1(buf[0]); + mt->vts[NVMEM_TS2] = CALIB_BUF0_VTS_TS2(buf[0]); + mt->vts[NVMEM_TS3] = CALIB_BUF1_VTS_TS3(buf[1]); + mt->vts[NVMEM_TS4] = CALIB_BUF2_VTS_TS4(buf[1]); + mt->vts[NVMEM_TS5] = CALIB_BUF2_VTS_TS5(buf[2]); + mt->degc_cali = CALIB_BUF0_DEGC_CALI(buf[0]); + mt->o_slope = CALIB_BUF0_O_SLOPE(buf[0]); } else { dev_info(dev, "Device not calibrated, using default calibration values\n"); } @@ -486,18 +546,36 @@ out: return ret; } +static const struct of_device_id mtk_thermal_of_match[] = { + { + .compatible = "mediatek,mt8173-thermal", + .data = (void *)&mt8173_thermal_data, + }, + { + .compatible = "mediatek,mt2701-thermal", + .data = (void *)&mt2701_thermal_data, + }, { + }, +}; +MODULE_DEVICE_TABLE(of, mtk_thermal_of_match); + static int mtk_thermal_probe(struct platform_device *pdev) { int ret, i; struct device_node *auxadc, *apmixedsys, *np = pdev->dev.of_node; struct mtk_thermal *mt; struct resource *res; + const struct of_device_id *of_id; u64 auxadc_phys_base, apmixed_phys_base; mt = devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL); if (!mt) return -ENOMEM; + of_id = of_match_device(mtk_thermal_of_match, &pdev->dev); + if (of_id) + mt->conf = (const struct mtk_thermal_data *)of_id->data; + mt->clk_peri_therm = devm_clk_get(&pdev->dev, "therm"); if (IS_ERR(mt->clk_peri_therm)) return PTR_ERR(mt->clk_peri_therm); @@ -565,7 +643,7 @@ static int mtk_thermal_probe(struct platform_device *pdev) goto err_disable_clk_auxadc; } - for (i = 0; i < MT8173_NUM_ZONES; i++) + for (i = 0; i < mt->conf->num_banks; i++) mtk_thermal_init_bank(mt, i, apmixed_phys_base, auxadc_phys_base); @@ -592,13 +670,6 @@ static int mtk_thermal_remove(struct platform_device *pdev) return 0; } -static const struct of_device_id mtk_thermal_of_match[] = { - { - .compatible = "mediatek,mt8173-thermal", - }, { - }, -}; - static struct platform_driver mtk_thermal_driver = { .probe = mtk_thermal_probe, .remove = mtk_thermal_remove, @@ -610,6 +681,7 @@ static struct platform_driver mtk_thermal_driver = { module_platform_driver(mtk_thermal_driver); +MODULE_AUTHOR("Dawei Chien "); MODULE_AUTHOR("Sascha Hauer "); MODULE_AUTHOR("Hanyi Wu "); MODULE_DESCRIPTION("Mediatek thermal driver");