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Tue, 04 Aug 2026 11:52:21 -0700 (PDT) X-Received: by 2002:a05:6a21:9991:b0:3a2:ed4a:5d7e with SMTP id adf61e73a8af0-3cb6c9c1887mr5739208637.22.1785869541078; Tue, 04 Aug 2026 11:52:21 -0700 (PDT) Received: from [192.168.1.8] ([106.222.234.41]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31586447d52sm6700712eec.12.2026.08.04.11.52.17 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Aug 2026 11:52:20 -0700 (PDT) Message-ID: <76c03e2b-649b-4316-9c3d-4ce5d27a86e5@oss.qualcomm.com> Date: Wed, 5 Aug 2026 00:22:15 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V3 10/14] i3c: master: Add helper to query bus wakeup requirements To: Adrian Hunter , alexandre.belloni@bootlin.com Cc: Frank.Li@nxp.com, akhilrajeev@nvidia.com, rafael@kernel.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org References: <20260804133810.184905-1-adrian.hunter@intel.com> <20260804133810.184905-11-adrian.hunter@intel.com> Content-Language: en-US From: Mukesh Savaliya In-Reply-To: <20260804133810.184905-11-adrian.hunter@intel.com> X-Proofpoint-ORIG-GUID: LfV69ptDfS1OlFzJaMlO5NuClzGPEnNS X-Authority-Analysis: v=2.4 cv=fcydDUQF c=1 sm=1 tr=0 ts=6a7234e6 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=/lQgZcjXNA7ZrIsIl4Cfeg==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=_glEPmIy2e8OvE2BGh3C:22 a=y7ZiA1EjnykWbA9aLYYA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwODA0MDE1MiBTYWx0ZWRfX4UwAJKxb9rKI CBbITk5sDvyA8+Og9mgwnnKoBCqGn7hNmciHCIwIZfIu0VRtqbP3af69wBcjcP5rSVrFIlyrs6u wCUlk75qP/JDHmk/eTB9Nqqs752T7Jw= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA0MDE1MiBTYWx0ZWRfX0OuNwcQKv/My UfEsym0+d9u4lxpiN3PYfGVaqSLc+6JdZjM7jRSZcVcz+fCMS/jwby4z3IOuF+jEo7UrlTRc8qr ULdWgPpKX7BmYfr91QMS5E86YFl9+DNAkSxcjSmjJCqRPKCFU4R1v08Hd+8UPavG+j+by/Lt6Dr 0xVLgbj2D+gEWsv2mDFlvz5XPFtwq/CI5sQKlKcopNXkG/7X+w6AFI+OurALswXPDqgn3GQBWVV 5FJlL2YwOr9Jf5Ylz2uOuvxwhztkqn7ijgntEcT/YeDIFe5ra6tJjrCRafxYUCz1Mmc0+dMfKVC VhcuTBTJWpttWmdjtGKNh5nzJMFYvfyCZ4YN5Il0bF1O2wgGnGRZ8FQw6E3sp3KITNTBXBEoe42 XKSxzD1/ccDy2pQGTV5FCvKjYK+HouRI6PuwPxS003mmjcA433zgInfE3dfVQwjkOiOJ9G0ZSfh 6b3vr1NKxwTucBcyC2A== X-Proofpoint-GUID: LfV69ptDfS1OlFzJaMlO5NuClzGPEnNS X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-04_03,2026-08-04_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 lowpriorityscore=0 impostorscore=0 suspectscore=0 adultscore=0 bulkscore=0 clxscore=1015 spamscore=0 priorityscore=1501 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608040152 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260804_115223_985392_9109E6D3 X-CRM114-Status: GOOD ( 17.63 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On 8/4/2026 7:08 PM, Adrian Hunter wrote: [...] > diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c > index 8c9e62e6f146..baf4769f0512 100644 > --- a/drivers/i3c/master.c > +++ b/drivers/i3c/master.c > @@ -2150,6 +2150,41 @@ static void i3c_master_reg_work_fn(struct work_struct *work) > i3c_master_register_new_i3c_devs(master); > } > > +/** > + * i3c_master_any_wakeup_enabled() - check if any device can wake the system > + * @master: I3C master controller > + * > + * Iterate over devices on the bus and return true if any device has > + * system wakeup enabled and IBI enabled. > + * > + * Whether a device is enabled for system wakeup is user space policy, > + * settable at any time through the device's power/wakeup sysfs attribute, > + * so the answer is only stable once user space is frozen. Call this from > + * a system suspend callback. > + * > + * Return: true if any device may wake the system via IBI, false otherwise. > + */ > +bool i3c_master_any_wakeup_enabled(struct i3c_master_controller *master) wanted to suggest if this function name suits ?i3c_master_has_wakeup_enabled_devs() > +{ > + struct i3c_dev_desc *desc; > + bool wakeup = false; > + > + i3c_bus_normaluse_lock(&master->bus); > + i3c_bus_for_each_i3cdev(&master->bus, desc) { > + if (!desc->dev || desc == master->this || !device_may_wakeup(&desc->dev->dev)) > + continue; > + guard(mutex)(&desc->ibi_lock); > + if (desc->ibi && desc->ibi->enabled) { > + wakeup = true; > + break; > + } > + } > + i3c_bus_normaluse_unlock(&master->bus); > + > + return wakeup; > +} > +EXPORT_SYMBOL_GPL(i3c_master_any_wakeup_enabled);\[...] [...] -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c