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Sun, 31 May 2020 09:15:47 +0200 Received: from vleu-orange.cadence.com (10.160.88.83) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1367.3 via Frontend Transport; Sun, 31 May 2020 09:15:47 +0200 Received: from vleu-orange.cadence.com (localhost.localdomain [127.0.0.1]) by vleu-orange.cadence.com (8.14.4/8.14.4) with ESMTP id 04V7Fl49007472; Sun, 31 May 2020 09:15:47 +0200 Received: (from pthombar@localhost) by vleu-orange.cadence.com (8.14.4/8.14.4/Submit) id 04V7Flaj007471; Sun, 31 May 2020 09:15:47 +0200 From: Parshuram Thombare To: , CC: , , , , , Parshuram Thombare Subject: [PATCH v8 6/7] i3c: master: sysfs key for acquire bus Date: Sun, 31 May 2020 09:15:46 +0200 Message-ID: <1590909346-7434-1-git-send-email-pthombar@cadence.com> X-Mailer: git-send-email 2.2.2 In-Reply-To: <1590909063-6013-1-git-send-email-pthombar@cadence.com> References: <1590909063-6013-1-git-send-email-pthombar@cadence.com> MIME-Version: 1.0 Content-Type: text/plain X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-Forefront-Antispam-Report: CIP:64.207.220.244;CTRY:CN;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:wcmailrelayl01.cadence.com;PTR:unused.mynethost.com;CAT:NONE;SFTY:;SFS:(4636009)(136003)(39850400004)(346002)(376002)(396003)(36092001)(46966005)(107886003)(70206006)(4326008)(2906002)(70586007)(336012)(478600001)(356005)(426003)(8936002)(8676002)(82310400002)(86362001)(81166007)(5660300002)(316002)(82740400003)(42186006)(2616005)(36906005)(54906003)(47076004)(186003)(83380400001)(26005)(36756003)(110136005);DIR:OUT;SFP:1101; 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Signed-off-by: Parshuram Thombare --- drivers/i3c/master.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index de3cb39df9ff..17c0c9a6099d 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -596,6 +596,23 @@ static ssize_t i2c_scl_frequency_show(struct device *dev, } static DEVICE_ATTR_RO(i2c_scl_frequency); +static ssize_t i3c_acquire_bus_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct i3c_master_controller *master = dev_to_i3cmaster(dev); + int ret; + + i3c_bus_normaluse_lock(&master->bus); + ret = i3c_master_acquire_bus(master); + i3c_bus_normaluse_unlock(&master->bus); + if (!ret) + i3c_master_enable_mr_events(master); + + return ret ?: count; +} +static DEVICE_ATTR_WO(i3c_acquire_bus); + static struct attribute *i3c_masterdev_attrs[] = { &dev_attr_mode.attr, &dev_attr_current_master.attr, @@ -606,6 +623,7 @@ static struct attribute *i3c_masterdev_attrs[] = { &dev_attr_pid.attr, &dev_attr_dynamic_address.attr, &dev_attr_hdrcap.attr, + &dev_attr_i3c_acquire_bus.attr, NULL, }; ATTRIBUTE_GROUPS(i3c_masterdev); -- 2.17.1