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Wysocki" , Pavel Machek , Len Brown , Greg Kroah-Hartman , Stanimir Varbanov , Vikash Garodia , Bjorn Andersson , Konrad Dybcio , Mauro Carvalho Chehab , Ulf Hansson , Philipp Zabel , "Bryan O'Donoghue" , Dikshita Agarwal Cc: Stanimir Varbanov , Mauro Carvalho Chehab , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org Subject: [PATCH 1/2] PM: domains: add device managed version of dev_pm_domain_attach|detach_list() Date: Fri, 12 Jul 2024 11:18:30 +0530 Message-Id: <1720763312-13018-2-git-send-email-quic_dikshita@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1720763312-13018-1-git-send-email-quic_dikshita@quicinc.com> References: <1720763312-13018-1-git-send-email-quic_dikshita@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: Wvwl86paHEyAthcndckSETwmFaof1Sqm X-Proofpoint-GUID: Wvwl86paHEyAthcndckSETwmFaof1Sqm 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=2024-07-12_03,2024-07-11_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 phishscore=0 lowpriorityscore=0 adultscore=0 priorityscore=1501 mlxlogscore=999 mlxscore=0 impostorscore=0 clxscore=1015 suspectscore=0 spamscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2406140001 definitions=main-2407120037 Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: This patch adds the devres-enabled version of dev_pm_domain_attach|detach_list. If client drivers use devm_pm_domain_attach_list() to attach the PM domains, devm_pm_domain_detach_list() will be invoked implicitly during remove phase. Signed-off-by: Dikshita Agarwal --- drivers/base/power/common.c | 41 +++++++++++++++++++++++++++++++++++++++++ include/linux/pm_domain.h | 4 ++++ 2 files changed, 45 insertions(+) diff --git a/drivers/base/power/common.c b/drivers/base/power/common.c index 327d168..082691e 100644 --- a/drivers/base/power/common.c +++ b/drivers/base/power/common.c @@ -277,6 +277,47 @@ int dev_pm_domain_attach_list(struct device *dev, EXPORT_SYMBOL_GPL(dev_pm_domain_attach_list); /** + * dev_pm_domain_detach_list - devres-enabled version of dev_pm_domain_detach_list. + * @list: The list of PM domains to detach. + * + * This function reverse the actions from devm_pm_domain_attach_list(). + * it will be invoked during the remove phase from drivers implicitly if driver + * uses devm_pm_domain_attach_list() to attach the PM domains. + */ +void devm_pm_domain_detach_list(void *_list) +{ + struct dev_pm_domain_list *list = _list; + + dev_pm_domain_detach_list(list); +} +EXPORT_SYMBOL_GPL(devm_pm_domain_detach_list); + +/** + * devm_pm_domain_attach_list - devres-enabled version of dev_pm_domain_attach_list + * + * NOTE: this will also handle calling devm_pm_domain_detach_list() for + * you during remove phase. + * + * Returns the number of attached PM domains or a negative error code in case of + * a failure. + */ +int devm_pm_domain_attach_list(struct device *dev, + const struct dev_pm_domain_attach_data *data, + struct dev_pm_domain_list **list) +{ + int ret, num_pds = 0; + + num_pds = dev_pm_domain_attach_list(dev, data, list); + + ret = devm_add_action_or_reset(dev, devm_pm_domain_detach_list, (void *)list); + if (ret) + return ret; + + return num_pds; +} +EXPORT_SYMBOL_GPL(devm_pm_domain_attach_list); + +/** * dev_pm_domain_detach - Detach a device from its PM domain. * @dev: Device to detach. * @power_off: Used to indicate whether we should power off the device. diff --git a/include/linux/pm_domain.h b/include/linux/pm_domain.h index 772d328..2f00150 100644 --- a/include/linux/pm_domain.h +++ b/include/linux/pm_domain.h @@ -450,8 +450,12 @@ struct device *dev_pm_domain_attach_by_name(struct device *dev, int dev_pm_domain_attach_list(struct device *dev, const struct dev_pm_domain_attach_data *data, struct dev_pm_domain_list **list); +int devm_pm_domain_attach_list(struct device *dev, + const struct dev_pm_domain_attach_data *data, + struct dev_pm_domain_list **list); void dev_pm_domain_detach(struct device *dev, bool power_off); void dev_pm_domain_detach_list(struct dev_pm_domain_list *list); +void devm_pm_domain_detach_list(void *list); int dev_pm_domain_start(struct device *dev); void dev_pm_domain_set(struct device *dev, struct dev_pm_domain *pd); int dev_pm_domain_set_performance_state(struct device *dev, unsigned int state);