From 2ff581c2185c3797fae2725537c7de1da3bc89fd Mon Sep 17 00:00:00 2001 From: Casey Connolly Date: Sun, 9 Aug 2026 17:58:58 +0530 Subject: soc: qcom: Add QMI TMD support for remote thermal mitigation Add support for Qualcomm Messaging Interface (QMI) based Thermal Mitigation Device (TMD) cooling devices provided by remote subsystems. On Qualcomm platforms where remote processors expose mitigation controls through the TMD QMI service, client drivers need support to discover the service, register cooling devices for available mitigation endpoints, and forward cooling state updates to remote subsystems. Signed-off-by: Casey Connolly Co-developed-by: Daniel Lezcano Signed-off-by: Daniel Lezcano Co-developed-by: Gaurav Kohli Signed-off-by: Gaurav Kohli Link: https://lore.kernel.org/r/20260809-b4-qmi-tmd-v8-2-b15d47adc379@oss.qualcomm.com Signed-off-by: Bjorn Andersson --- include/linux/soc/qcom/qmi.h | 1 + include/linux/soc/qcom/qmi_tmd.h | 36 ++++++++++++++++++++++++++++++++++++ 2 files changed, 37 insertions(+) create mode 100644 include/linux/soc/qcom/qmi_tmd.h (limited to 'include/linux/soc/qcom') diff --git a/include/linux/soc/qcom/qmi.h b/include/linux/soc/qcom/qmi.h index b9dcb437a0be..683d27cee413 100644 --- a/include/linux/soc/qcom/qmi.h +++ b/include/linux/soc/qcom/qmi.h @@ -96,6 +96,7 @@ struct qmi_elem_info { * Enumerate the IDs of the QMI services */ #define QMI_SERVICE_ID_TEST 0x0f /* 15 */ +#define QMI_SERVICE_ID_TMD 0x18 /* 24 */ #define QMI_SERVICE_ID_SSCTL 0x2b /* 43 */ #define QMI_SERVICE_ID_IPA 0x31 /* 49 */ #define QMI_SERVICE_ID_SERVREG_LOC 0x40 /* 64 */ diff --git a/include/linux/soc/qcom/qmi_tmd.h b/include/linux/soc/qcom/qmi_tmd.h new file mode 100644 index 000000000000..452f51f23731 --- /dev/null +++ b/include/linux/soc/qcom/qmi_tmd.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (c) 2025, Linaro Limited + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries. + * + * QMI Thermal Mitigation Device (TMD) library header. + */ + +#ifndef __QMI_TMD_H__ +#define __QMI_TMD_H__ + +struct device; +struct qmi_tmd_client; + +#if IS_ENABLED(CONFIG_QCOM_QMI_TMD) +struct qmi_tmd_client *qmi_tmd_init(struct device *dev, + unsigned int instance_id, + const char * const *tmd_names, + int num_tmds); + +void qmi_tmd_exit(struct qmi_tmd_client *tmd_cli); +#else +static inline struct qmi_tmd_client *qmi_tmd_init(struct device *dev, + unsigned int instance_id, + const char * const *tmd_names, + int num_tmds) +{ + return NULL; +} + +static inline void qmi_tmd_exit(struct qmi_tmd_client *tmd_cli) +{ +} +#endif + +#endif /* __QMI_TMD_H__ */ -- cgit v1.2.3