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GEN2 rev2 peripherals have individual temp DAC registers to set temperature thresholds for over-temperature stages 1-3. Registers are configured based on thermal zone trip definition. Signed-off-by: Anjelique Melendez --- .../devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml b/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml index 30b22151aa82..f9af88d51c2d 100644 --- a/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml +++ b/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml @@ -12,14 +12,16 @@ maintainers: description: QPNP temperature alarm peripherals are found inside of Qualcomm PMIC chips that utilize the Qualcomm SPMI implementation. These peripherals provide an - interrupt signal and status register to identify high PMIC die temperature. + interrupt signal and status registers to identify high PMIC die temperature. allOf: - $ref: thermal-sensor.yaml# properties: compatible: - const: qcom,spmi-temp-alarm + enum: + - qcom,spmi-temp-alarm + - qcom,spmi-temp-alarm-gen2-rev2 reg: maxItems: 1 From patchwork Mon Jul 29 23:12:56 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Anjelique Melendez X-Patchwork-Id: 13745880 X-Patchwork-Delegate: daniel.lezcano@linaro.org Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 92AE018FC60; Mon, 29 Jul 2024 23:14:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; 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Mon, 29 Jul 2024 23:13:42 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA04.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 46TNDfGp003970 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jul 2024 23:13:41 GMT Received: from hu-amelende-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 29 Jul 2024 16:13:41 -0700 From: Anjelique Melendez To: , , , , , CC: , , , , , , , , , "Anjelique Melendez" Subject: [PATCH 2/5] dt-bindings: qcom,spmi-temp-alarm: Add compatible for lite temp alarm Date: Mon, 29 Jul 2024 16:12:56 -0700 Message-ID: <20240729231259.2122976-3-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240729231259.2122976-1-quic_amelende@quicinc.com> References: <20240729231259.2122976-1-quic_amelende@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: BAiW26roXMI8esIsz8IFHBKQYfVwO8QA X-Proofpoint-ORIG-GUID: BAiW26roXMI8esIsz8IFHBKQYfVwO8QA X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-29_20,2024-07-26_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 phishscore=0 lowpriorityscore=0 mlxlogscore=999 priorityscore=1501 clxscore=1015 spamscore=0 mlxscore=0 bulkscore=0 suspectscore=0 impostorscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407290159 Add compatible "qcom,spmi-temp-alarm-lite" for Temp alarm lite peripherals. Temp alarm lite peripherals have two stages: warning and shutdown, and use a pair of registers to configure warning interrupt threshold temperature and an automatic hardware shutdown threshold temperature. When defining thermal zone trips for a temp alarm lite device the first thermal zone trip is for warning alarm IRQ in HW, the second thermal zone trip is purely for software to perform a controlled shutdown (no HW support) and the third thermal zone trip is for automatic hardware shutdown. Signed-off-by: Anjelique Melendez --- .../thermal/qcom,spmi-temp-alarm.yaml | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml b/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml index f9af88d51c2d..bbf201cad16b 100644 --- a/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml +++ b/Documentation/devicetree/bindings/thermal/qcom,spmi-temp-alarm.yaml @@ -22,6 +22,7 @@ properties: enum: - qcom,spmi-temp-alarm - qcom,spmi-temp-alarm-gen2-rev2 + - qcom,spmi-temp-alarm-lite reg: maxItems: 1 @@ -84,3 +85,46 @@ examples: }; }; }; + + - | + + pmic { + #address-cells = <1>; + #size-cells = <0>; + + pm8550b_lite_tz: pm8550b-temp-alarm-lite@c00 { + compatible = "qcom,spmi-temp-alarm-lite"; + reg = <0xc00>; + interrupts = <0x1 0xa 0x0 IRQ_TYPE_EDGE_BOTH>; + #thermal-sensor-cells = <0>; + }; + }; + + thermal-zones { + pm8550b_lite_temp_alarm: pm8550blite-thermal { + polling-delay-passive = <100>; 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Mon, 29 Jul 2024 23:13:43 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA02.qualcomm.com (8.17.1.19/8.17.1.19) with ESMTPS id 46TNDgJF011824 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 29 Jul 2024 23:13:42 GMT Received: from hu-amelende-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 29 Jul 2024 16:13:42 -0700 From: Anjelique Melendez To: , , , , , CC: , , , , , , , , , "Anjelique Melendez" Subject: [PATCH 3/5] thermal: qcom-spmi-temp-alarm: enable stage 2 shutdown when required Date: Mon, 29 Jul 2024 16:12:57 -0700 Message-ID: <20240729231259.2122976-4-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240729231259.2122976-1-quic_amelende@quicinc.com> References: <20240729231259.2122976-1-quic_amelende@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: crQQNm_2aleF3hjTmv0d-llieMx9CUXD X-Proofpoint-ORIG-GUID: crQQNm_2aleF3hjTmv0d-llieMx9CUXD X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-29_20,2024-07-26_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxlogscore=999 impostorscore=0 spamscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 malwarescore=0 mlxscore=0 clxscore=1015 phishscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407290159 From: David Collins Certain TEMP_ALARM GEN2 PMIC peripherals need over-temperature stage 2 automatic PMIC partial shutdown to be enabled in order to avoid repeated faults in the event of reaching over-temperature stage 3. Modify the stage 2 shutdown control logic to ensure that stage 2 shutdown is enabled on all affected PMICs. Read the digital major and minor revision registers to identify these PMICs. Signed-off-by: David Collins Signed-off-by: Anjelique Melendez --- drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 32 +++++++++++++++++++-- 1 file changed, 30 insertions(+), 2 deletions(-) diff --git a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c index 96daad28b0c0..de4a2d99f0d5 100644 --- a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c +++ b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* * Copyright (c) 2011-2015, 2017, 2020, The Linux Foundation. All rights reserved. + * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved. */ #include @@ -16,6 +17,7 @@ #include "../thermal_hwmon.h" +#define QPNP_TM_REG_DIG_MINOR 0x00 #define QPNP_TM_REG_DIG_MAJOR 0x01 #define QPNP_TM_REG_TYPE 0x04 #define QPNP_TM_REG_SUBTYPE 0x05 @@ -71,6 +73,7 @@ struct qpnp_tm_chip { struct device *dev; struct thermal_zone_device *tz_dev; unsigned int subtype; + unsigned int dig_revision; long temp; unsigned int thresh; unsigned int stage; @@ -78,6 +81,7 @@ struct qpnp_tm_chip { /* protects .thresh, .stage and chip registers */ struct mutex lock; bool initialized; + bool require_s2_shutdown; struct iio_channel *adc; const long (*temp_map)[THRESH_COUNT][STAGE_COUNT]; @@ -255,7 +259,7 @@ static int qpnp_tm_update_critical_trip_temp(struct qpnp_tm_chip *chip, skip: reg |= chip->thresh; - if (disable_s2_shutdown) + if (disable_s2_shutdown && !chip->require_s2_shutdown) reg |= SHUTDOWN_CTRL1_OVERRIDE_S2; return qpnp_tm_write(chip, QPNP_TM_REG_SHUTDOWN_CTRL1, reg); @@ -366,7 +370,7 @@ static int qpnp_tm_probe(struct platform_device *pdev) { struct qpnp_tm_chip *chip; struct device_node *node; - u8 type, subtype, dig_major; + u8 type, subtype, dig_major, dig_minor; u32 res; int ret, irq; @@ -419,6 +423,30 @@ static int qpnp_tm_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, ret, "could not read dig_major\n"); + ret = qpnp_tm_read(chip, QPNP_TM_REG_DIG_MINOR, &dig_minor); + if (ret < 0) { + dev_err(&pdev->dev, "could not read dig_minor\n"); + return ret; + } + + chip->dig_revision = (dig_major << 8) | dig_minor; + + if (chip->subtype == QPNP_TM_SUBTYPE_GEN2) { + /* + * Check if stage 2 automatic partial shutdown must remain + * enabled to avoid potential repeated faults upon reaching + * over-temperature stage 3. + */ + switch (chip->dig_revision) { + case 0x0001: + case 0x0002: + case 0x0100: + case 0x0101: + chip->require_s2_shutdown = true; + break; + } + } + if (type != QPNP_TM_TYPE || (subtype != QPNP_TM_SUBTYPE_GEN1 && subtype != QPNP_TM_SUBTYPE_GEN2)) { dev_err(&pdev->dev, "invalid type 0x%02x or subtype 0x%02x\n", From patchwork Mon Jul 29 23:12:58 2024 Content-Type: text/plain; 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Mon, 29 Jul 2024 23:13:43 GMT Received: from hu-amelende-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 29 Jul 2024 16:13:43 -0700 From: Anjelique Melendez To: , , , , , CC: , , , , , , , , , "Anjelique Melendez" Subject: [PATCH 4/5] thermal: qcom-spmi-temp-alarm: add support for GEN2 rev 2 PMIC peripherals Date: Mon, 29 Jul 2024 16:12:58 -0700 Message-ID: <20240729231259.2122976-5-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240729231259.2122976-1-quic_amelende@quicinc.com> References: <20240729231259.2122976-1-quic_amelende@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: VSQdrgiQzr7hzrmKOC_Loe9AuBzdu74s X-Proofpoint-GUID: VSQdrgiQzr7hzrmKOC_Loe9AuBzdu74s X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-29_20,2024-07-26_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 mlxlogscore=999 malwarescore=0 spamscore=0 adultscore=0 mlxscore=0 lowpriorityscore=0 suspectscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407290159 Add support for TEMP_ALARM GEN2 PMIC peripherals with digital major revision 2. This revision utilizes individual temp DAC registers to set the threshold temperature for over-temperature stages 1, 2, and 3 instead of a single register to specify a set of thresholds. Co-developed-by: David Collins Signed-off-by: David Collins Signed-off-by: Anjelique Melendez --- drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 195 ++++++++++++++++++-- 1 file changed, 184 insertions(+), 11 deletions(-) diff --git a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c index de4a2d99f0d5..1f56acd8f637 100644 --- a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c +++ b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -24,6 +24,10 @@ #define QPNP_TM_REG_STATUS 0x08 #define QPNP_TM_REG_SHUTDOWN_CTRL1 0x40 #define QPNP_TM_REG_ALARM_CTRL 0x46 +/* TEMP_DAC_* registers are only present for TEMP_GEN2 v2.0 */ +#define QPNP_TM_REG_TEMP_DAC_STG1 0x47 +#define QPNP_TM_REG_TEMP_DAC_STG2 0x48 +#define QPNP_TM_REG_TEMP_DAC_STG3 0x49 #define QPNP_TM_TYPE 0x09 #define QPNP_TM_SUBTYPE_GEN1 0x08 @@ -65,13 +69,42 @@ static const long temp_map_gen2_v1[THRESH_COUNT][STAGE_COUNT] = { #define TEMP_STAGE_HYSTERESIS 2000 +/* + * For TEMP_GEN2 v2.0, TEMP_DAC_STG1/2/3 registers are used to set the threshold + * for each stage independently. + * TEMP_DAC_STG* = 0 --> 80 C + * Each 8 step increase in TEMP_DAC_STG* value corresponds to 5 C (5000 mC). + */ +#define TEMP_DAC_MIN 80000 +#define TEMP_DAC_SCALE_NUM 8 +#define TEMP_DAC_SCALE_DEN 5000 + +#define TEMP_DAC_TEMP_TO_REG(temp) \ + (((temp) - TEMP_DAC_MIN) * TEMP_DAC_SCALE_NUM / TEMP_DAC_SCALE_DEN) +#define TEMP_DAC_REG_TO_TEMP(reg) \ + (TEMP_DAC_MIN + (reg) * TEMP_DAC_SCALE_DEN / TEMP_DAC_SCALE_NUM) + +static const long temp_dac_max[STAGE_COUNT] = { + 119375, 159375, 159375 +}; + /* Temperature in Milli Celsius reported during stage 0 if no ADC is present */ #define DEFAULT_TEMP 37000 +struct qpnp_tm_chip; + +struct spmi_temp_alarm_data { + const struct thermal_zone_device_ops *ops; + bool has_temp_dac; + int (*setup)(struct qpnp_tm_chip *chip); + int (*update_trip_temps)(struct qpnp_tm_chip *chip); +}; + struct qpnp_tm_chip { struct regmap *map; struct device *dev; struct thermal_zone_device *tz_dev; + const struct spmi_temp_alarm_data *data; unsigned int subtype; unsigned int dig_revision; long temp; @@ -85,6 +118,8 @@ struct qpnp_tm_chip { struct iio_channel *adc; const long (*temp_map)[THRESH_COUNT][STAGE_COUNT]; + + long temp_dac_map[STAGE_COUNT]; }; /* This array maps from GEN2 alarm state to GEN1 alarm stage */ @@ -118,6 +153,13 @@ static int qpnp_tm_write(struct qpnp_tm_chip *chip, u16 addr, u8 data) */ static long qpnp_tm_decode_temp(struct qpnp_tm_chip *chip, unsigned int stage) { + if (chip->data->has_temp_dac) { + if (stage == 0 || stage > STAGE_COUNT) + return 0; + + return chip->temp_dac_map[stage - 1]; + } + if (!chip->temp_map || chip->thresh >= THRESH_COUNT || stage == 0 || stage > STAGE_COUNT) return 0; @@ -219,6 +261,34 @@ static int qpnp_tm_get_temp(struct thermal_zone_device *tz, int *temp) return 0; } +static int qpnp_tm_gen2_rev2_set_temp_thresh(struct qpnp_tm_chip *chip, int trip, + int temp) +{ + int ret, temp_cfg; + u8 reg; + + if (trip < 0 || trip >= STAGE_COUNT) { + dev_err(chip->dev, "invalid TEMP_DAC trip = %d\n", trip); + return -EINVAL; + } else if (temp < TEMP_DAC_MIN || temp > temp_dac_max[trip]) { + dev_err(chip->dev, "invalid TEMP_DAC temp = %d\n", temp); + return -EINVAL; + } + + reg = TEMP_DAC_TEMP_TO_REG(temp); + temp_cfg = TEMP_DAC_REG_TO_TEMP(reg); + + ret = qpnp_tm_write(chip, QPNP_TM_REG_TEMP_DAC_STG1 + trip, reg); + if (ret < 0) { + dev_err(chip->dev, "TEMP_DAC_STG write failed, ret=%d\n", ret); + return ret; + } + + chip->temp_dac_map[trip] = temp_cfg; + + return 0; +} + static int qpnp_tm_update_critical_trip_temp(struct qpnp_tm_chip *chip, int temp) { @@ -286,6 +356,24 @@ static const struct thermal_zone_device_ops qpnp_tm_sensor_ops = { .set_trip_temp = qpnp_tm_set_trip_temp, }; +static int qpnp_tm_gen2_rev2_set_trip_temp(struct thermal_zone_device *tz, + int trip, int temp) +{ + struct qpnp_tm_chip *chip = tz->devdata; + int ret; + + mutex_lock(&chip->lock); + ret = qpnp_tm_gen2_rev2_set_temp_thresh(chip, trip, temp); + mutex_unlock(&chip->lock); + + return ret; +} + +static const struct thermal_zone_device_ops qpnp_tm_gen2_rev2_sensor_ops = { + .get_temp = qpnp_tm_get_temp, + .set_trip_temp = qpnp_tm_gen2_rev2_set_trip_temp, +}; + static irqreturn_t qpnp_tm_isr(int irq, void *data) { struct qpnp_tm_chip *chip = data; @@ -313,6 +401,71 @@ static int qpnp_tm_get_critical_trip_temp(struct qpnp_tm_chip *chip) return THERMAL_TEMP_INVALID; } +/* Configure TEMP_DAC registers based on DT thermal_zone trips */ +static int qpnp_tm_gen2_rev2_update_trip_temps(struct qpnp_tm_chip *chip) +{ + struct thermal_trip trip = {0}; + int ret, ntrips, i; + + ntrips = thermal_zone_get_num_trips(chip->tz_dev); + /* Keep hardware defaults if no DT trips are defined. */ + if (ntrips <= 0) + return 0; + + for (i = 0; i < ntrips; i++) { + ret = thermal_zone_get_trip(chip->tz_dev, i, &trip); + if (ret < 0) + return ret; + + ret = qpnp_tm_gen2_rev2_set_temp_thresh(chip, i, trip.temperature); + if (ret < 0) + return ret; + } + + /* Verify that trips are strictly increasing. */ + for (i = 1; i < STAGE_COUNT; i++) { + if (chip->temp_dac_map[i] <= chip->temp_dac_map[i - 1]) { + dev_err(chip->dev, "Threshold %d=%ld <= threshold %d=%ld\n", + i, chip->temp_dac_map[i], i - 1, + chip->temp_dac_map[i - 1]); + return -EINVAL; + } + } + + return 0; +} + +/* Read the hardware default TEMP_DAC stage threshold temperatures */ +static int qpnp_tm_gen2_rev2_init(struct qpnp_tm_chip *chip) +{ + int ret, i; + u8 reg = 0; + + for (i = 0; i < STAGE_COUNT; i++) { + ret = qpnp_tm_read(chip, QPNP_TM_REG_TEMP_DAC_STG1 + i, ®); + if (ret < 0) + return ret; + + chip->temp_dac_map[i] = TEMP_DAC_REG_TO_TEMP(reg); + } + + return 0; +} + +static const struct spmi_temp_alarm_data spmi_temp_alarm_data = { + .ops = &qpnp_tm_sensor_ops, + .has_temp_dac = false, + .setup = NULL, + .update_trip_temps = NULL, +}; + +static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_rev2_data = { + .ops = &qpnp_tm_gen2_rev2_sensor_ops, + .has_temp_dac = true, + .setup = qpnp_tm_gen2_rev2_init, + .update_trip_temps = qpnp_tm_gen2_rev2_update_trip_temps, +}; + /* * This function initializes the internal temp value based on only the * current thermal stage and threshold. Setup threshold control and @@ -339,21 +492,27 @@ static int qpnp_tm_init(struct qpnp_tm_chip *chip) goto out; chip->stage = ret; - stage = chip->subtype == QPNP_TM_SUBTYPE_GEN1 + stage = (chip->subtype == QPNP_TM_SUBTYPE_GEN1) ? chip->stage : alarm_state_map[chip->stage]; if (stage) chip->temp = qpnp_tm_decode_temp(chip, stage); - mutex_unlock(&chip->lock); + if (chip->data->update_trip_temps) { + ret = chip->data->update_trip_temps(chip); + if (ret < 0) + goto out; + } else { + mutex_unlock(&chip->lock); - crit_temp = qpnp_tm_get_critical_trip_temp(chip); + crit_temp = qpnp_tm_get_critical_trip_temp(chip); - mutex_lock(&chip->lock); + mutex_lock(&chip->lock); - ret = qpnp_tm_update_critical_trip_temp(chip, crit_temp); - if (ret < 0) - goto out; + ret = qpnp_tm_update_critical_trip_temp(chip, crit_temp); + if (ret < 0) + goto out; + } /* Enable the thermal alarm PMIC module in always-on mode. */ reg = ALARM_CTRL_FORCE_ENABLE; @@ -380,6 +539,10 @@ static int qpnp_tm_probe(struct platform_device *pdev) if (!chip) return -ENOMEM; + chip->data = of_device_get_match_data(&pdev->dev); + if (!chip->data) + return -EINVAL; + dev_set_drvdata(&pdev->dev, chip); chip->dev = &pdev->dev; @@ -455,18 +618,21 @@ static int qpnp_tm_probe(struct platform_device *pdev) } chip->subtype = subtype; - if (subtype == QPNP_TM_SUBTYPE_GEN2 && dig_major >= 1) + if (subtype == QPNP_TM_SUBTYPE_GEN2 && dig_major == 1) chip->temp_map = &temp_map_gen2_v1; - else + else if (subtype == QPNP_TM_SUBTYPE_GEN1) chip->temp_map = &temp_map_gen1; + if (chip->data->setup) + chip->data->setup(chip); + /* * Register the sensor before initializing the hardware to be able to * read the trip points. get_temp() returns the default temperature * before the hardware initialization is completed. */ chip->tz_dev = devm_thermal_of_zone_register( - &pdev->dev, 0, chip, &qpnp_tm_sensor_ops); + &pdev->dev, 0, chip, chip->data->ops); if (IS_ERR(chip->tz_dev)) return dev_err_probe(&pdev->dev, PTR_ERR(chip->tz_dev), "failed to register sensor\n"); @@ -488,7 +654,14 @@ static int qpnp_tm_probe(struct platform_device *pdev) } static const struct of_device_id qpnp_tm_match_table[] = { - { .compatible = "qcom,spmi-temp-alarm" }, + { + .compatible = "qcom,spmi-temp-alarm", + .data = &spmi_temp_alarm_data, + }, + { + .compatible = "qcom,spmi-temp-alarm-gen2-rev2", + .data = &spmi_temp_alarm_gen2_rev2_data, + }, { } }; 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Mon, 29 Jul 2024 23:13:44 GMT Received: from hu-amelende-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Mon, 29 Jul 2024 16:13:44 -0700 From: Anjelique Melendez To: , , , , , CC: , , , , , , , , , "Anjelique Melendez" Subject: [PATCH 5/5] thermal: qcom-spmi-temp-alarm: add support for LITE PMIC peripherals Date: Mon, 29 Jul 2024 16:12:59 -0700 Message-ID: <20240729231259.2122976-6-quic_amelende@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240729231259.2122976-1-quic_amelende@quicinc.com> References: <20240729231259.2122976-1-quic_amelende@quicinc.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01a.na.qualcomm.com (10.47.209.196) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 2MWzISC04lUvu3Ajixu4AeQAnfVx-SEM X-Proofpoint-GUID: 2MWzISC04lUvu3Ajixu4AeQAnfVx-SEM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-07-29_20,2024-07-26_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 bulkscore=0 impostorscore=0 adultscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 spamscore=0 clxscore=1015 priorityscore=1501 mlxlogscore=999 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2407290159 Add support for TEMP_ALARM LITE PMIC peripherals. This subtype utilizes a pair of registers to configure a warning interrupt threshold temperature and an automatic hardware shutdown threshold temperature. Co-developed-by: David Collins Signed-off-by: David Collins Signed-off-by: Anjelique Melendez --- drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 208 +++++++++++++++++++- 1 file changed, 202 insertions(+), 6 deletions(-) diff --git a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c index 1f56acd8f637..e50ce66ec096 100644 --- a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c +++ b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -4,6 +4,7 @@ * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved. */ +#include #include #include #include @@ -22,21 +23,28 @@ #define QPNP_TM_REG_TYPE 0x04 #define QPNP_TM_REG_SUBTYPE 0x05 #define QPNP_TM_REG_STATUS 0x08 +#define QPNP_TM_REG_IRQ_STATUS 0x10 #define QPNP_TM_REG_SHUTDOWN_CTRL1 0x40 #define QPNP_TM_REG_ALARM_CTRL 0x46 /* TEMP_DAC_* registers are only present for TEMP_GEN2 v2.0 */ #define QPNP_TM_REG_TEMP_DAC_STG1 0x47 #define QPNP_TM_REG_TEMP_DAC_STG2 0x48 #define QPNP_TM_REG_TEMP_DAC_STG3 0x49 +#define QPNP_TM_REG_LITE_TEMP_CFG1 0x50 +#define QPNP_TM_REG_LITE_TEMP_CFG2 0x51 #define QPNP_TM_TYPE 0x09 #define QPNP_TM_SUBTYPE_GEN1 0x08 #define QPNP_TM_SUBTYPE_GEN2 0x09 +#define QPNP_TM_SUBTYPE_LITE 0xC0 #define STATUS_GEN1_STAGE_MASK GENMASK(1, 0) #define STATUS_GEN2_STATE_MASK GENMASK(6, 4) #define STATUS_GEN2_STATE_SHIFT 4 +/* IRQ status only needed for TEMP_ALARM_LITE */ +#define IRQ_STATUS_MASK BIT(0) + #define SHUTDOWN_CTRL1_OVERRIDE_S2 BIT(6) #define SHUTDOWN_CTRL1_THRESHOLD_MASK GENMASK(1, 0) @@ -44,6 +52,8 @@ #define ALARM_CTRL_FORCE_ENABLE BIT(7) +#define LITE_TEMP_CFG_THRESHOLD_MASK GENMASK(3, 2) + #define THRESH_COUNT 4 #define STAGE_COUNT 3 @@ -88,6 +98,19 @@ static const long temp_dac_max[STAGE_COUNT] = { 119375, 159375, 159375 }; +/* + * TEMP_ALARM_LITE has two stages: warning and shutdown with independently + * configured threshold temperatures. + */ + +static const long temp_map_lite_warning[THRESH_COUNT] = { + 115000, 125000, 135000, 145000 +}; + +static const long temp_map_lite_shutdown[THRESH_COUNT] = { + 135000, 145000, 160000, 175000 +}; + /* Temperature in Milli Celsius reported during stage 0 if no ADC is present */ #define DEFAULT_TEMP 37000 @@ -171,19 +194,26 @@ static long qpnp_tm_decode_temp(struct qpnp_tm_chip *chip, unsigned int stage) * qpnp_tm_get_temp_stage() - return over-temperature stage * @chip: Pointer to the qpnp_tm chip * - * Return: stage (GEN1) or state (GEN2) on success, or errno on failure. + * Return: stage (GEN1), state (GEN2), or alarm interrupt state (LITE) on + * success; or errno on failure. */ static int qpnp_tm_get_temp_stage(struct qpnp_tm_chip *chip) { int ret; + u16 addr = QPNP_TM_REG_STATUS; u8 reg = 0; - ret = qpnp_tm_read(chip, QPNP_TM_REG_STATUS, ®); + if (chip->subtype == QPNP_TM_SUBTYPE_LITE) + addr = QPNP_TM_REG_IRQ_STATUS; + + ret = qpnp_tm_read(chip, addr, ®); if (ret < 0) return ret; if (chip->subtype == QPNP_TM_SUBTYPE_GEN1) ret = reg & STATUS_GEN1_STAGE_MASK; + else if (chip->subtype == QPNP_TM_SUBTYPE_LITE) + ret = reg & IRQ_STATUS_MASK; else ret = (reg & STATUS_GEN2_STATE_MASK) >> STATUS_GEN2_STATE_SHIFT; @@ -206,7 +236,8 @@ static int qpnp_tm_update_temp_no_adc(struct qpnp_tm_chip *chip) return ret; stage = ret; - if (chip->subtype == QPNP_TM_SUBTYPE_GEN1) { + if (chip->subtype == QPNP_TM_SUBTYPE_GEN1 + || chip->subtype == QPNP_TM_SUBTYPE_LITE) { stage_new = stage; stage_old = chip->stage; } else { @@ -289,6 +320,78 @@ static int qpnp_tm_gen2_rev2_set_temp_thresh(struct qpnp_tm_chip *chip, int trip return 0; } +static int qpnp_tm_lite_set_temp_thresh(struct qpnp_tm_chip *chip, int trip, + int temp) +{ + int ret, temp_cfg, i; + const long *temp_map; + u16 addr; + u8 reg, thresh; + + if (trip < 0 || trip >= STAGE_COUNT) { + dev_err(chip->dev, "invalid TEMP_LITE trip = %d\n", trip); + return -EINVAL; + } + + switch (trip) { + case 0: + temp_map = temp_map_lite_warning; + addr = QPNP_TM_REG_LITE_TEMP_CFG1; + break; + case 1: + /* + * The second trip point is purely in software to facilitate + * a controlled shutdown after the warning threshold is crossed + * but before the automatic hardware shutdown threshold is + * crossed. + */ + return 0; + case 2: + temp_map = temp_map_lite_shutdown; + addr = QPNP_TM_REG_LITE_TEMP_CFG2; + break; + default: + return 0; + } + + if (temp < temp_map[THRESH_MIN] || temp > temp_map[THRESH_MAX]) { + dev_err(chip->dev, "invalid TEMP_LITE temp = %d\n", temp); + return -EINVAL; + } + + thresh = 0; + temp_cfg = temp_map[thresh]; + for (i = THRESH_MAX; i >= THRESH_MIN; i--) { + if (temp >= temp_map[i]) { + thresh = i; + temp_cfg = temp_map[i]; + break; + } + } + + if (temp_cfg == chip->temp_dac_map[trip]) + return 0; + + ret = qpnp_tm_read(chip, addr, ®); + if (ret < 0) { + dev_err(chip->dev, "LITE_TEMP_CFG read failed, ret=%d\n", ret); + return ret; + } + + reg &= ~LITE_TEMP_CFG_THRESHOLD_MASK; + reg |= FIELD_PREP(LITE_TEMP_CFG_THRESHOLD_MASK, thresh); + + ret = qpnp_tm_write(chip, addr, reg); + if (ret < 0) { + dev_err(chip->dev, "LITE_TEMP_CFG write failed, ret=%d\n", ret); + return ret; + } + + chip->temp_dac_map[trip] = temp_cfg; + + return 0; +} + static int qpnp_tm_update_critical_trip_temp(struct qpnp_tm_chip *chip, int temp) { @@ -374,6 +477,24 @@ static const struct thermal_zone_device_ops qpnp_tm_gen2_rev2_sensor_ops = { .set_trip_temp = qpnp_tm_gen2_rev2_set_trip_temp, }; +static int qpnp_tm_lite_set_trip_temp(struct thermal_zone_device *tz, + int trip, int temp) +{ + struct qpnp_tm_chip *chip = tz->devdata; + int ret; + + mutex_lock(&chip->lock); + ret = qpnp_tm_lite_set_temp_thresh(chip, trip, temp); + mutex_unlock(&chip->lock); + + return ret; +} + +static const struct thermal_zone_device_ops qpnp_tm_lite_sensor_ops = { + .get_temp = qpnp_tm_get_temp, + .set_trip_temp = qpnp_tm_lite_set_trip_temp, +}; + static irqreturn_t qpnp_tm_isr(int irq, void *data) { struct qpnp_tm_chip *chip = data; @@ -452,6 +573,68 @@ static int qpnp_tm_gen2_rev2_init(struct qpnp_tm_chip *chip) return 0; } +/* Configure TEMP_LITE registers based on DT thermal_zone trips */ +static int qpnp_tm_lite_update_trip_temps(struct qpnp_tm_chip *chip) +{ + struct thermal_trip trip = {0}; + int ret, ntrips, i; + + ntrips = thermal_zone_get_num_trips(chip->tz_dev); + /* Keep hardware defaults if no DT trips are defined. */ + if (ntrips <= 0) + return 0; + + for (i = 0; i < ntrips; i++) { + ret = thermal_zone_get_trip(chip->tz_dev, i, &trip); + if (ret < 0) + return ret; + + ret = qpnp_tm_lite_set_temp_thresh(chip, i, trip.temperature); + if (ret < 0) + return ret; + } + + /* Verify that trips are strictly increasing. */ + if (chip->temp_dac_map[2] <= chip->temp_dac_map[0]) { + dev_err(chip->dev, "Threshold 2=%ld <= threshold 0=%ld\n", + chip->temp_dac_map[2], chip->temp_dac_map[0]); + return -EINVAL; + } + + return 0; +} + +/* Read the hardware default TEMP_LITE stage threshold temperatures */ +static int qpnp_tm_lite_init(struct qpnp_tm_chip *chip) +{ + int ret, thresh; + u8 reg = 0; + + /* + * Store the warning trip temp in temp_dac_map[0] and the shutdown trip + * temp in temp_dac_map[2]. The second trip point is purely in software + * to facilitate a controlled shutdown after the warning threshold is + * crossed but before the automatic hardware shutdown threshold is + * crossed. Thus, there is no register to read for the second trip + * point. + */ + ret = qpnp_tm_read(chip, QPNP_TM_REG_LITE_TEMP_CFG1, ®); + if (ret < 0) + return ret; + + thresh = FIELD_GET(LITE_TEMP_CFG_THRESHOLD_MASK, reg); + chip->temp_dac_map[0] = temp_map_lite_warning[thresh]; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_LITE_TEMP_CFG2, ®); + if (ret < 0) + return ret; + + thresh = FIELD_GET(LITE_TEMP_CFG_THRESHOLD_MASK, reg); + chip->temp_dac_map[2] = temp_map_lite_shutdown[thresh]; + + return 0; +} + static const struct spmi_temp_alarm_data spmi_temp_alarm_data = { .ops = &qpnp_tm_sensor_ops, .has_temp_dac = false, @@ -466,6 +649,13 @@ static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_rev2_data = { .update_trip_temps = qpnp_tm_gen2_rev2_update_trip_temps, }; +static const struct spmi_temp_alarm_data spmi_temp_alarm_lite_data = { + .ops = &qpnp_tm_lite_sensor_ops, + .has_temp_dac = true, + .setup = qpnp_tm_lite_init, + .update_trip_temps = qpnp_tm_lite_update_trip_temps, +}; + /* * This function initializes the internal temp value based on only the * current thermal stage and threshold. Setup threshold control and @@ -492,8 +682,9 @@ static int qpnp_tm_init(struct qpnp_tm_chip *chip) goto out; chip->stage = ret; - stage = (chip->subtype == QPNP_TM_SUBTYPE_GEN1) - ? chip->stage : alarm_state_map[chip->stage]; + stage = (chip->subtype == QPNP_TM_SUBTYPE_GEN1 + || chip->subtype == QPNP_TM_SUBTYPE_LITE) + ? chip->stage : alarm_state_map[chip->stage]; if (stage) chip->temp = qpnp_tm_decode_temp(chip, stage); @@ -611,7 +802,8 @@ static int qpnp_tm_probe(struct platform_device *pdev) } if (type != QPNP_TM_TYPE || (subtype != QPNP_TM_SUBTYPE_GEN1 - && subtype != QPNP_TM_SUBTYPE_GEN2)) { + && subtype != QPNP_TM_SUBTYPE_GEN2 + && subtype != QPNP_TM_SUBTYPE_LITE)) { dev_err(&pdev->dev, "invalid type 0x%02x or subtype 0x%02x\n", type, subtype); return -ENODEV; @@ -662,6 +854,10 @@ static const struct of_device_id qpnp_tm_match_table[] = { .compatible = "qcom,spmi-temp-alarm-gen2-rev2", .data = &spmi_temp_alarm_gen2_rev2_data, }, + { + .compatible = "qcom,spmi-temp-alarm-lite", + .data = &spmi_temp_alarm_lite_data, + }, { } }; MODULE_DEVICE_TABLE(of, qpnp_tm_match_table);