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[35.194.220.176]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-210bc02ea58sm7276935ad.196.2024.10.25.03.52.52 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 25 Oct 2024 03:52:54 -0700 (PDT) From: Hsin-Te Yuan Date: Fri, 25 Oct 2024 10:52:50 +0000 Subject: [PATCH v13] thermal/drivers/mediatek/auxadc_thermal: expose all thermal sensors Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241025-auxadc_thermal-v13-1-a5231c52dccb@chromium.org> X-B4-Tracking: v=1; b=H4sIAIF4G2cC/3XNTQrCMBAF4KuUrI1kkhAbV95DRNJxYgLWSqqlU np30yKCf8v3hvfNwFpKkVq2LgaWqIttbM45gFoUDIM7H4nHQy6YFFKLUljubr074P4aKNXuxG1 FSpWEZQXI8uiSyMd+Fre7nENsr026zw86gKn+a+U7B+68Mogr7ZVTGwypqeOtXjbpyCavA/kyQ Aj4NmQ2ZFUaFFZ7r827sSieUzC/pyi0UmS9Aec/3o/j+ABrmLH2MQEAAA== X-Change-ID: 20240809-auxadc_thermal-9be338ec8b1c To: "Rafael J. Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, James Lo , Michael Kao , Hsin-Yi Wang , Ben Tseng , Hsin-Te Yuan X-Mailer: b4 0.15-dev-7be4f From: James Lo Previously, the driver only supported reading the temperature from all sensors and returning the maximum value. This update adds another get_temp ops to support reading the temperature from each sensor separately. Especially, some thermal zones registered by this patch are needed by MT8183 since those thermal zones are necessary for mtk-svs driver. Signed-off-by: Michael Kao Signed-off-by: Hsin-Yi Wang Signed-off-by: Ben Tseng Signed-off-by: James Lo Reviewed-by: AngeloGioacchino Del Regno Signed-off-by: Hsin-Te Yuan --- Changes in v13: - Make subject and commit message more clear. - Make error message more clear. - Link to v12: https://lore.kernel.org/r/20241016-auxadc_thermal-v12-1-c043= 3e9f61af@chromium.org Changes in v12: - Remove unnecessary check and unused variable assignment in mtk_read_senso= r_temp. - Add more about what this patch achieves in the commit message. - Link to v11: https://lore.kernel.org/r/20240809-auxadc_thermal-v11-1-af36= cc74f3a3@chromium.org Changes in V11: - Rebase on kernel v6.11-rc2 - Use mtk_thermal_temp_is_valid in mtk_read_sensor_temp just like mtk_thermal_bank_temperature - Change the error handling of devm_thermal_of_zone_register return value - link to V10: https://lore.kernel.org/lkml/20220519101044.16765-1-jame= s.lo@mediatek.com/ Changes in V10: - Rebase to kernel-v5.18-rc7 - Resend Changes in V9: - Rebase to kernel-v5.14-rc1 - Bind raw_to_mcelsius_v1 or raw_to_mcelsius_v2 to compatible data of struct mtk_thermal_data - Remove duplicate struct 'mtk_thermal_bank' - Remove unnecessary if condition check - Return error if any thermal zone fail to register Changes in V8: - Rebase to kernel-v5.13-rc1 - Resend Changes in v7: - Fix build error in v6. Changes in v6: - Rebase to kernel-5.11-rc1. - [1/3] - add interrupts property. - [2/3] - add the Tested-by in the commit message. - [3/3] - use the mt->conf->msr[id] instead of conf->msr[id] in the _get_sensor_temp and mtk_thermal_bank_temperature. - remove the redundant space in _get_sensor_temp and mtk_read_sensor_temp. - change kmalloc to dev_kmalloc in mtk_thermal_probe. Changes in v5: - Rebase to kernel-5.9-rc1. - Revise the title of cover letter. - Drop "[v4,7/7] thermal: mediatek: use spinlock to protect PTPCORESEL" - [2/2] - Add the judgement to the version of raw_to_mcelsius. Changes in v4: - Rebase to kernel-5.6-rc1. - [1/7] - Squash thermal zone settings in the dtsi from [v3,5/8] arm64: dts: mt8183: Increase polling frequency for CPU thermal zo= ne. - Remove the property of interrupts and mediatek,hw-reset-temp. - [2/7] - Correct commit message. - [4/7] - Change the target temperature to the 80C and change the commit me= ssage. - [6/7] - Adjust newline alignment. - Fix the judgement on the return value of registering thermal zone. Changes in v3: - Rebase to kernel-5.5-rc1. - [1/8] - Update sustainable power of cpu, tzts1~5 and tztsABB. - [7/8] - Bypass the failure that non cpu_thermal sensor is not find in the= rmal-zones in dts, which is normal for mt8173, so prompt a warning here inst= ead of failing. Return -EAGAIN instead of -EACCESS on the first read of sensor that often are bogus values. This can avoid following warning on boot: thermal thermal_zone6: failed to read out thermal zone (-13) Changes in v2: - [1/8] - Add the sustainable-power,trips,cooling-maps to the tzts1~tztsABB. - [4/8] - Add the min opp of cpu throttle. --- --- drivers/thermal/mediatek/auxadc_thermal.c | 70 +++++++++++++++++++++++++++= ---- 1 file changed, 62 insertions(+), 8 deletions(-) diff --git a/drivers/thermal/mediatek/auxadc_thermal.c b/drivers/thermal/me= diatek/auxadc_thermal.c index 9ee2e7283435acfcbb1a956303b6122a08affecc..85cd26bfcc111b8a2ddcf76c697= ac60b69d16354 100644 --- a/drivers/thermal/mediatek/auxadc_thermal.c +++ b/drivers/thermal/mediatek/auxadc_thermal.c @@ -847,7 +847,8 @@ static int mtk_thermal_bank_temperature(struct mtk_ther= mal_bank *bank) =20 static int mtk_read_temp(struct thermal_zone_device *tz, int *temperature) { - struct mtk_thermal *mt =3D thermal_zone_device_priv(tz); + struct mtk_thermal_bank *bank =3D thermal_zone_device_priv(tz); + struct mtk_thermal *mt =3D bank->mt; int i; int tempmax =3D INT_MIN; =20 @@ -866,10 +867,41 @@ static int mtk_read_temp(struct thermal_zone_device *= tz, int *temperature) return 0; } =20 +static int mtk_read_sensor_temp(struct thermal_zone_device *tz, int *tempe= rature) +{ + struct mtk_thermal_bank *bank =3D thermal_zone_device_priv(tz); + struct mtk_thermal *mt =3D bank->mt; + const struct mtk_thermal_data *conf =3D mt->conf; + int id =3D bank->id - 1; + int temp =3D INT_MIN; + u32 raw; + + raw =3D readl(mt->thermal_base + conf->msr[id]); + + temp =3D mt->raw_to_mcelsius(mt, id, raw); + + /* + * The first read of a sensor often contains very high bogus + * temperature value. Filter these out so that the system does + * not immediately shut down. + */ + + if (unlikely(!mtk_thermal_temp_is_valid(temp))) + return -EAGAIN; + + *temperature =3D temp; + + return 0; +} + static const struct thermal_zone_device_ops mtk_thermal_ops =3D { .get_temp =3D mtk_read_temp, }; =20 +static const struct thermal_zone_device_ops mtk_thermal_sensor_ops =3D { + .get_temp =3D mtk_read_sensor_temp, +}; + static void mtk_thermal_init_bank(struct mtk_thermal *mt, int num, u32 apmixed_phys_base, u32 auxadc_phys_base, int ctrl_id) @@ -1199,6 +1231,7 @@ static int mtk_thermal_probe(struct platform_device *= pdev) u64 auxadc_phys_base, apmixed_phys_base; struct thermal_zone_device *tzdev; void __iomem *apmixed_base, *auxadc_base; + struct mtk_thermal_bank *tz; =20 mt =3D devm_kzalloc(&pdev->dev, sizeof(*mt), GFP_KERNEL); if (!mt) @@ -1285,14 +1318,35 @@ static int mtk_thermal_probe(struct platform_device= *pdev) mtk_thermal_init_bank(mt, i, apmixed_phys_base, auxadc_phys_base, ctrl_id); =20 - tzdev =3D devm_thermal_of_zone_register(&pdev->dev, 0, mt, - &mtk_thermal_ops); - if (IS_ERR(tzdev)) - return PTR_ERR(tzdev); + for (i =3D 0; i <=3D mt->conf->num_sensors; i++) { + tz =3D devm_kmalloc(&pdev->dev, sizeof(*tz), GFP_KERNEL); + if (!tz) + return -ENOMEM; + + tz->mt =3D mt; + tz->id =3D i; + + tzdev =3D devm_thermal_of_zone_register(&pdev->dev, i, + tz, (i =3D=3D 0) ? + &mtk_thermal_ops + : &mtk_thermal_sensor_ops); + + if (IS_ERR(tzdev)) { + ret =3D PTR_ERR(tzdev); + if (ret =3D=3D -ENODEV) { + dev_warn(&pdev->dev, "Can't find thermal zone for sensor %d; sensor sk= ipped.\n", i); + continue; + } + dev_err(&pdev->dev, + "Error: Failed to register thermal zone %d, ret =3D %d\n", + i, ret); + return dev_err_probe(&pdev->dev, ret, "Failed to register thermal zone = %d.\n", i); + } =20 - ret =3D devm_thermal_add_hwmon_sysfs(&pdev->dev, tzdev); - if (ret) - dev_warn(&pdev->dev, "error in thermal_add_hwmon_sysfs"); + ret =3D devm_thermal_add_hwmon_sysfs(&pdev->dev, tzdev); + if (ret) + dev_warn(&pdev->dev, "Sensor %d: Error in thermal_add_hwmon_sysfs: %d\n= ", i, ret); + } =20 return 0; } --- base-commit: b589839414be04b2b37e4bf6f84af576c99faf64 change-id: 20240809-auxadc_thermal-9be338ec8b1c Best regards, --=20 Hsin-Te Yuan