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[2003:e4:1f20:1d00:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id kv7-20020a17090778c700b0088f8ae18b6bsm1059203ejc.189.2023.02.09.08.35.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Feb 2023 08:36:00 -0800 (PST) From: Thierry Reding To: "Rafael J . Wysocki" , Daniel Lezcano Cc: Amit Kucheria , Zhang Rui , Jon Hunter , linux-pm@vger.kernel.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] thermal: Add support for cooling device bind/unbind operations Date: Thu, 9 Feb 2023 17:35:54 +0100 Message-Id: <20230209163555.1993557-1-thierry.reding@gmail.com> X-Mailer: git-send-email 2.39.1 MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1757372319170055038?= X-GMAIL-MSGID: =?utf-8?q?1757372319170055038?= From: Thierry Reding Drivers for cooling devices can implement these operations when they need to perform extra work at the time when a cooling device is bound to a given thermal zone. Signed-off-by: Thierry Reding --- drivers/thermal/thermal_core.c | 11 +++++++++++ include/linux/thermal.h | 6 ++++++ 2 files changed, 17 insertions(+) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 0675df54c8e6..627fccd100ef 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -694,6 +694,14 @@ int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz, mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); + if (cdev->ops->bind) { + result = cdev->ops->bind(cdev, tz, trip, upper, lower, weight); + if (result < 0) { + pr_err("failed to bind %s to %s: %d\n", cdev->type, + tz->type, result); + } + } + if (!result) return 0; @@ -730,6 +738,9 @@ int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz, { struct thermal_instance *pos, *next; + if (cdev->ops->unbind) + cdev->ops->unbind(cdev, tz, trip); + mutex_lock(&tz->lock); mutex_lock(&cdev->lock); list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) { diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 2bb4bf33f4f3..95ed8a0cbba8 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -89,6 +89,12 @@ struct thermal_trip { }; struct thermal_cooling_device_ops { + int (*bind)(struct thermal_cooling_device *cdev, + struct thermal_zone_device *tz, int trip_id, + unsigned long upper, unsigned long lower, + unsigned int weight); + void (*unbind)(struct thermal_cooling_device *cdev, + struct thermal_zone_device *tz, int trip_id); int (*get_max_state) (struct thermal_cooling_device *, unsigned long *); int (*get_cur_state) (struct thermal_cooling_device *, unsigned long *); int (*set_cur_state) (struct thermal_cooling_device *, unsigned long);