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[78.94.0.51]) by smtp.gmail.com with ESMTPSA id b13-20020a170906d10d00b009930c80b87csm1229561ejz.142.2023.10.05.06.31.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 05 Oct 2023 06:31:05 -0700 (PDT) From: Naresh Solanki To: broonie@kernel.org, zev@bewilderbeest.net, Liam Girdwood Cc: Patrick Rudolph , Naresh Solanki , linux-kernel@vger.kernel.org Subject: [PATCH] drivers/regulator: Notify sysfs about status changes Date: Thu, 5 Oct 2023 15:30:58 +0200 Message-ID: <20231005133059.917577-1-naresh.solanki@9elements.com> X-Mailer: git-send-email 2.41.0 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,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (howler.vger.email [0.0.0.0]); Thu, 05 Oct 2023 07:25:43 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1778925986102258688 X-GMAIL-MSGID: 1778925986102258688 From: Patrick Rudolph Notify sysfs for state, status & microvolts. Signed-off-by: Patrick Rudolph Signed-off-by: Naresh Solanki --- drivers/regulator/core.c | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) base-commit: f9a1d31874c383f58bb4f89bfe79b764682cd026 diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 3137e40fcd3e..ef5fa70ae2f1 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -98,6 +98,10 @@ static struct regulator *create_regulator(struct regulator_dev *rdev, static void destroy_regulator(struct regulator *regulator); static void _regulator_put(struct regulator *regulator); +static struct device_attribute dev_attr_status; +static struct device_attribute dev_attr_microvolts; +static struct device_attribute dev_attr_state; + const char *rdev_get_name(struct regulator_dev *rdev) { if (rdev->constraints && rdev->constraints->name) @@ -2798,6 +2802,8 @@ static int _regulator_do_enable(struct regulator_dev *rdev) _regulator_delay_helper(delay); } + sysfs_notify(&rdev->dev.kobj, NULL, dev_attr_state.attr.name); + trace_regulator_enable_complete(rdev_get_name(rdev)); return 0; @@ -2980,6 +2986,8 @@ static int _regulator_do_disable(struct regulator_dev *rdev) if (rdev->desc->off_on_delay) rdev->last_off = ktime_get_boottime(); + sysfs_notify(&rdev->dev.kobj, NULL, dev_attr_state.attr.name); + trace_regulator_disable_complete(rdev_get_name(rdev)); return 0; @@ -4848,8 +4856,21 @@ EXPORT_SYMBOL_GPL(regulator_unregister_notifier); static int _notifier_call_chain(struct regulator_dev *rdev, unsigned long event, void *data) { + const char *name; + int ret; + /* call rdev chain first */ - return blocking_notifier_call_chain(&rdev->notifier, event, data); + ret = blocking_notifier_call_chain(&rdev->notifier, event, data); + + if (event & REGULATOR_EVENT_VOLTAGE_CHANGE) { + name = dev_attr_microvolts.attr.name; + sysfs_notify(&rdev->dev.kobj, NULL, name); + } else { + name = dev_attr_status.attr.name; + sysfs_notify(&rdev->dev.kobj, NULL, name); + } + + return ret; } int _regulator_bulk_get(struct device *dev, int num_consumers,