From nobody Wed Nov 13 07:05:40 2024 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 25B86C54EBE for ; Wed, 18 Jan 2023 03:56:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229799AbjARD4I (ORCPT ); Tue, 17 Jan 2023 22:56:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37192 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229802AbjARDzw (ORCPT ); Tue, 17 Jan 2023 22:55:52 -0500 Received: from fudo.makrotopia.org (fudo.makrotopia.org [IPv6:2a07:2ec0:3002::71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4735B54B0B; Tue, 17 Jan 2023 19:55:50 -0800 (PST) Received: from local by fudo.makrotopia.org with esmtpsa (TLS1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.96) (envelope-from ) id 1pHzYC-00033J-0e; Wed, 18 Jan 2023 04:55:48 +0100 Date: Wed, 18 Jan 2023 03:55:41 +0000 From: Daniel Golle To: AngeloGioacchino Del Regno , linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui , Matthias Brugger , Rob Herring Cc: Steven Liu , Henry Yen , Chad Monroe , John Crispin , Frank Wunderlich Subject: [PATCH v4 2/2] thermal: mediatek: add support for MT7986 and MT7981 Message-ID: References: MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add support for V3 generation thermal found in MT7986 and MT7981 SoCs. Brings code to assign values from efuse as well as new function to convert raw temperature to millidegree celsius, as found in MediaTek's SDK sources (but cleaned up and de-duplicated) [1]: https://git01.mediatek.com/plugins/gitiles/openwrt/feeds/mtk-openwrt-f= eeds/+/baf36c7eef477aae1f8f2653b6c29e2caf48475b Signed-off-by: Daniel Golle --- drivers/thermal/mtk_thermal.c | 137 ++++++++++++++++++++++++++++++++-- 1 file changed, 132 insertions(+), 5 deletions(-) diff --git a/drivers/thermal/mtk_thermal.c b/drivers/thermal/mtk_thermal.c index 992750ee09e62..171f485a809bb 100644 --- a/drivers/thermal/mtk_thermal.c +++ b/drivers/thermal/mtk_thermal.c @@ -150,6 +150,20 @@ #define CALIB_BUF1_VALID_V2(x) (((x) >> 4) & 0x1) #define CALIB_BUF1_O_SLOPE_SIGN_V2(x) (((x) >> 3) & 0x1) =20 +/* + * Layout of the fuses providing the calibration data + * These macros can be used for MT7981 and MT7986. + */ +#define CALIB_BUF0_ADC_GE_V3(x) (((x) >> 0) & 0x3ff) +#define CALIB_BUF0_DEGC_CALI_V3(x) (((x) >> 20) & 0x3f) +#define CALIB_BUF0_O_SLOPE_V3(x) (((x) >> 26) & 0x3f) +#define CALIB_BUF1_VTS_TS1_V3(x) (((x) >> 0) & 0x1ff) +#define CALIB_BUF1_VTS_TS2_V3(x) (((x) >> 21) & 0x1ff) +#define CALIB_BUF1_VTS_TSABB_V3(x) (((x) >> 9) & 0x1ff) +#define CALIB_BUF1_VALID_V3(x) (((x) >> 18) & 0x1) +#define CALIB_BUF1_O_SLOPE_SIGN_V3(x) (((x) >> 19) & 0x1) +#define CALIB_BUF1_ID_V3(x) (((x) >> 20) & 0x1) + enum { VTS1, VTS2, @@ -163,6 +177,7 @@ enum { enum mtk_thermal_version { MTK_THERMAL_V1 =3D 1, MTK_THERMAL_V2, + MTK_THERMAL_V3, }; =20 /* MT2701 thermal sensors */ @@ -245,6 +260,27 @@ enum mtk_thermal_version { /* The calibration coefficient of sensor */ #define MT8183_CALIBRATION 153 =20 +/* AUXADC channel 11 is used for the temperature sensors */ +#define MT7986_TEMP_AUXADC_CHANNEL 11 + +/* The total number of temperature sensors in the MT7986 */ +#define MT7986_NUM_SENSORS 1 + +/* The number of banks in the MT7986 */ +#define MT7986_NUM_ZONES 1 + +/* The number of sensing points per bank */ +#define MT7986_NUM_SENSORS_PER_ZONE 1 + +/* MT7986 thermal sensors */ +#define MT7986_TS1 0 + +/* The number of controller in the MT7986 */ +#define MT7986_NUM_CONTROLLER 1 + +/* The calibration coefficient of sensor */ +#define MT7986_CALIBRATION 165 + struct mtk_thermal; =20 struct thermal_bank_cfg { @@ -388,6 +424,14 @@ static const int mt7622_mux_values[MT7622_NUM_SENSORS]= =3D { 0, }; static const int mt7622_vts_index[MT7622_NUM_SENSORS] =3D { VTS1 }; static const int mt7622_tc_offset[MT7622_NUM_CONTROLLER] =3D { 0x0, }; =20 +/* MT7986 thermal sensor data */ +static const int mt7986_bank_data[MT7986_NUM_SENSORS] =3D { MT7986_TS1, }; +static const int mt7986_msr[MT7986_NUM_SENSORS_PER_ZONE] =3D { TEMP_MSR0, = }; +static const int mt7986_adcpnp[MT7986_NUM_SENSORS_PER_ZONE] =3D { TEMP_ADC= PNP0, }; +static const int mt7986_mux_values[MT7986_NUM_SENSORS] =3D { 0, }; +static const int mt7986_vts_index[MT7986_NUM_SENSORS] =3D { VTS1 }; +static const int mt7986_tc_offset[MT7986_NUM_CONTROLLER] =3D { 0x0, }; + /* * The MT8173 thermal controller has four banks. Each bank can read up to * four temperature sensors simultaneously. The MT8173 has a total of 5 @@ -551,6 +595,30 @@ static const struct mtk_thermal_data mt8183_thermal_da= ta =3D { .version =3D MTK_THERMAL_V1, }; =20 +/* + * MT7986 uses AUXADC Channel 11 for raw data access. + */ +static const struct mtk_thermal_data mt7986_thermal_data =3D { + .auxadc_channel =3D MT7986_TEMP_AUXADC_CHANNEL, + .num_banks =3D MT7986_NUM_ZONES, + .num_sensors =3D MT7986_NUM_SENSORS, + .vts_index =3D mt7986_vts_index, + .cali_val =3D MT7986_CALIBRATION, + .num_controller =3D MT7986_NUM_CONTROLLER, + .controller_offset =3D mt7986_tc_offset, + .need_switch_bank =3D true, + .bank_data =3D { + { + .num_sensors =3D 1, + .sensors =3D mt7986_bank_data, + }, + }, + .msr =3D mt7986_msr, + .adcpnp =3D mt7986_adcpnp, + .sensor_mux_values =3D mt7986_mux_values, + .version =3D MTK_THERMAL_V3, +}; + /** * raw_to_mcelsius_v1 - convert a raw ADC value to mcelsius * @mt: The thermal controller @@ -605,6 +673,22 @@ static int raw_to_mcelsius_v2(struct mtk_thermal *mt, = int sensno, s32 raw) return (format_2 - tmp) * 100; } =20 +static int raw_to_mcelsius_v3(struct mtk_thermal *mt, int sensno, s32 raw) +{ + s32 tmp; + + if (raw =3D=3D 0) + return 0; + + raw &=3D 0xfff; + tmp =3D 100000 * 15 / 16 * 10000; + tmp /=3D 4096 - 512 + mt->adc_ge; + tmp /=3D 1490; + tmp *=3D raw - mt->vts[sensno] - 2900; + + return mt->degc_cali * 500 - tmp; +} + /** * mtk_thermal_get_bank - get bank * @bank: The bank @@ -885,6 +969,25 @@ static int mtk_thermal_extract_efuse_v2(struct mtk_the= rmal *mt, u32 *buf) return 0; } =20 +static int mtk_thermal_extract_efuse_v3(struct mtk_thermal *mt, u32 *buf) +{ + if (!CALIB_BUF1_VALID_V3(buf[1])) + return -EINVAL; + + mt->adc_ge =3D CALIB_BUF0_ADC_GE_V3(buf[0]); + mt->degc_cali =3D CALIB_BUF0_DEGC_CALI_V3(buf[0]); + mt->o_slope =3D CALIB_BUF0_O_SLOPE_V3(buf[0]); + mt->vts[VTS1] =3D CALIB_BUF1_VTS_TS1_V3(buf[1]); + mt->vts[VTS2] =3D CALIB_BUF1_VTS_TS2_V3(buf[1]); + mt->vts[VTSABB] =3D CALIB_BUF1_VTS_TSABB_V3(buf[1]); + mt->o_slope_sign =3D CALIB_BUF1_O_SLOPE_SIGN_V3(buf[1]); + + if (CALIB_BUF1_ID_V3(buf[1]) =3D=3D 0) + mt->o_slope =3D 0; + + return 0; +} + static int mtk_thermal_get_calibration_data(struct device *dev, struct mtk_thermal *mt) { @@ -895,6 +998,7 @@ static int mtk_thermal_get_calibration_data(struct devi= ce *dev, =20 /* Start with default values */ mt->adc_ge =3D 512; + mt->adc_oe =3D 512; for (i =3D 0; i < mt->conf->num_sensors; i++) mt->vts[i] =3D 260; mt->degc_cali =3D 40; @@ -920,10 +1024,20 @@ static int mtk_thermal_get_calibration_data(struct d= evice *dev, goto out; } =20 - if (mt->conf->version =3D=3D MTK_THERMAL_V1) + switch (mt->conf->version) { + case MTK_THERMAL_V1: ret =3D mtk_thermal_extract_efuse_v1(mt, buf); - else + break; + case MTK_THERMAL_V2: ret =3D mtk_thermal_extract_efuse_v2(mt, buf); + break; + case MTK_THERMAL_V3: + ret =3D mtk_thermal_extract_efuse_v3(mt, buf); + break; + default: + ret =3D -EINVAL; + break; + } =20 if (ret) { dev_info(dev, "Device not calibrated, using default calibration values\n= "); @@ -953,6 +1067,10 @@ static const struct of_device_id mtk_thermal_of_match= [] =3D { .compatible =3D "mediatek,mt7622-thermal", .data =3D (void *)&mt7622_thermal_data, }, + { + .compatible =3D "mediatek,mt7986-thermal", + .data =3D (void *)&mt7986_thermal_data, + }, { .compatible =3D "mediatek,mt8183-thermal", .data =3D (void *)&mt8183_thermal_data, @@ -1068,15 +1186,24 @@ static int mtk_thermal_probe(struct platform_device= *pdev) goto err_disable_clk_auxadc; } =20 - if (mt->conf->version =3D=3D MTK_THERMAL_V2) { + if (mt->conf->version !=3D MTK_THERMAL_V1) { mtk_thermal_turn_on_buffer(apmixed_base); mtk_thermal_release_periodic_ts(mt, auxadc_base); } =20 - if (mt->conf->version =3D=3D MTK_THERMAL_V1) + switch (mt->conf->version) { + case MTK_THERMAL_V1: mt->raw_to_mcelsius =3D raw_to_mcelsius_v1; - else + break; + case MTK_THERMAL_V2: mt->raw_to_mcelsius =3D raw_to_mcelsius_v2; + break; + case MTK_THERMAL_V3: + mt->raw_to_mcelsius =3D raw_to_mcelsius_v3; + break; + default: + break; + } =20 for (ctrl_id =3D 0; ctrl_id < mt->conf->num_controller ; ctrl_id++) for (i =3D 0; i < mt->conf->num_banks; i++) --=20 2.39.1