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[129.46.96.20]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7349fe6cfd9sm11492793b3a.76.2025.03.04.15.05.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 04 Mar 2025 15:05:10 -0800 (PST) From: Anjelique Melendez To: amitk@kernel.org, thara.gopinath@gmail.com, rafael@kernel.org, daniel.lezcano@linaro.org Cc: rui.zhang@intel.com, lukasz.luba@arm.com, david.collins@oss.qualcomm.com, linux-arm-msm@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dmitry.baryshkov@linaro.org Subject: [PATCH v3 5/5] thermal: qcom-spmi-temp-alarm: add support for LITE PMIC peripherals Date: Tue, 4 Mar 2025 15:05:02 -0800 Message-Id: <20250304230502.1470523-6-anjelique.melendez@oss.qualcomm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250304230502.1470523-1-anjelique.melendez@oss.qualcomm.com> References: <20250304230502.1470523-1-anjelique.melendez@oss.qualcomm.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Authority-Analysis: v=2.4 cv=I/ufRMgg c=1 sm=1 tr=0 ts=67c78729 cx=c_pps a=0uOsjrqzRL749jD1oC5vDA==:117 a=ouPCqIW2jiPt+lZRy3xVPw==:17 a=Vs1iUdzkB0EA:10 a=EUspDBNiAAAA:8 a=47G9NL9pyX4x7Wg37RYA:9 a=mQ_c8vxmzFEMiUWkPHU9:22 X-Proofpoint-GUID: icF4RpLJl4dkCQF4y03q2dR8gv0xqzmu X-Proofpoint-ORIG-GUID: icF4RpLJl4dkCQF4y03q2dR8gv0xqzmu X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-04_09,2025-03-04_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 spamscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 phishscore=0 malwarescore=0 mlxlogscore=999 impostorscore=0 clxscore=1015 classifier=spam authscore=0 adjust=0 reason=mlx scancount=1 engine=8.19.0-2502100000 definitions=main-2503040183 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. Signed-off-by: David Collins Signed-off-by: Anjelique Melendez --- drivers/thermal/qcom/qcom-spmi-temp-alarm.c | 204 +++++++++++++++++++- 1 file changed, 203 insertions(+), 1 deletion(-) diff --git a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c index efd2b6534127..2547a69dbd07 100644 --- a/drivers/thermal/qcom/qcom-spmi-temp-alarm.c +++ b/drivers/thermal/qcom/qcom-spmi-temp-alarm.c @@ -23,6 +23,7 @@ #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 @@ -30,14 +31,20 @@ #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) +/* 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) @@ -45,6 +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 @@ -89,6 +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_lite_warning_map[THRESH_COUNT] = { + 115000, 125000, 135000, 145000 +}; + +static const long temp_lite_shutdown_map[THRESH_COUNT] = { + 135000, 145000, 160000, 175000 +}; + /* Temperature in Milli Celsius reported during stage 0 if no ADC is present */ #define DEFAULT_TEMP 37000 @@ -198,6 +220,24 @@ static int qpnp_tm_gen2_get_temp_stage(struct qpnp_tm_chip *chip) return alarm_state_map[ret]; } +/** + * qpnp_tm_lite_get_temp_stage() - return over-temperature stage + * @chip: Pointer to the qpnp_tm chip + * + * Return: alarm interrupt state on success, or errno on failure. + */ +static int qpnp_tm_lite_get_temp_stage(struct qpnp_tm_chip *chip) +{ + u8 reg = 0; + int ret; + + ret = qpnp_tm_read(chip, QPNP_TM_REG_IRQ_STATUS, ®); + if (ret < 0) + return ret; + + return reg & IRQ_STATUS_MASK; +} + /* * This function updates the internal temp value based on the * current thermal stage and threshold as well as the previous stage @@ -377,6 +417,96 @@ 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_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_lite_warning_map; + 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_lite_shutdown_map; + 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_thresh_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_thresh_map[trip] = temp_cfg; + + return 0; +} + +static int qpnp_tm_lite_set_trip_temp(struct thermal_zone_device *tz, + const struct thermal_trip *trip, int temp) +{ + unsigned int trip_index = THERMAL_TRIP_PRIV_TO_INT(trip->priv); + struct qpnp_tm_chip *chip = thermal_zone_device_priv(tz); + int ret; + + mutex_lock(&chip->lock); + ret = qpnp_tm_lite_set_temp_thresh(chip, trip_index, 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; @@ -453,6 +583,68 @@ static int qpnp_tm_gen2_rev2_setup(struct qpnp_tm_chip *chip) return 0; } +/* Configure TEMP_LITE registers based on DT thermal_zone trips */ +static int qpnp_tm_lite_configure_trip_temps_cb(struct thermal_trip *trip, void *data) +{ + struct qpnp_tm_chip *chip = data; + int ret; + + trip->priv = THERMAL_INT_TO_TRIP_PRIV(chip->ntrips); + ret = qpnp_tm_lite_set_temp_thresh(chip, chip->ntrips, trip->temperature); + chip->ntrips++; + + return ret; +} + +static int qpnp_tm_lite_configure_trip_temps(struct qpnp_tm_chip *chip) +{ + int ret; + + ret = thermal_zone_for_each_trip(chip->tz_dev, qpnp_tm_lite_configure_trip_temps_cb, chip); + if (ret < 0) + return ret; + + /* Verify that trips are strictly increasing. */ + if (chip->temp_thresh_map[2] <= chip->temp_thresh_map[0]) { + dev_err(chip->dev, "Threshold 2=%ld <= threshold 0=%ld\n", + chip->temp_thresh_map[2], chip->temp_thresh_map[0]); + return -EINVAL; + } + + return 0; +} + +/* Read the hardware default TEMP_LITE stage threshold temperatures */ +static int qpnp_tm_lite_setup(struct qpnp_tm_chip *chip) +{ + int ret, thresh; + u8 reg = 0; + + /* + * Store the warning trip temp in temp_thresh_map[0] and the shutdown trip + * temp in temp_thresh_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_thresh_map[0] = temp_lite_warning_map[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_thresh_map[2] = temp_lite_shutdown_map[thresh]; + + return 0; +} + static const struct spmi_temp_alarm_data spmi_temp_alarm_data = { .ops = &qpnp_tm_sensor_ops, .temp_map = &temp_map_gen1, @@ -481,6 +673,13 @@ static const struct spmi_temp_alarm_data spmi_temp_alarm_gen2_rev2_data = { .get_temp_stage = qpnp_tm_gen2_get_temp_stage, }; +static const struct spmi_temp_alarm_data spmi_temp_alarm_lite_data = { + .ops = &qpnp_tm_lite_sensor_ops, + .setup = qpnp_tm_lite_setup, + .configure_trip_temps = qpnp_tm_lite_configure_trip_temps, + .get_temp_stage = qpnp_tm_lite_get_temp_stage, +}; + /* * This function initializes the internal temp value based on only the * current thermal stage and threshold. Setup threshold control and @@ -605,7 +804,8 @@ 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; @@ -621,6 +821,8 @@ static int qpnp_tm_probe(struct platform_device *pdev) chip->data = &spmi_temp_alarm_gen2_rev1_data; else if (subtype == QPNP_TM_SUBTYPE_GEN2) chip->data = &spmi_temp_alarm_gen2_data; + else if (subtype == QPNP_TM_SUBTYPE_LITE) + chip->data = &spmi_temp_alarm_lite_data; else return -ENODEV;