From: Parshuram Thombare <pthombar@cadence.com> To: <bbrezillon@kernel.org>, <vitor.soares@synopsys.com> Cc: <pgaj@cadence.com>, <linux-i3c@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <mparab@cadence.com>, <praneeth@ti.com>, Parshuram Thombare <pthombar@cadence.com> Subject: [PATCH v7 6/7] i3c: master: sysfs key for acquire bus Date: Mon, 11 May 2020 15:16:48 +0200 [thread overview] Message-ID: <1589203008-10880-1-git-send-email-pthombar@cadence.com> (raw) In-Reply-To: <1589202702-4879-1-git-send-email-pthombar@cadence.com> Added support to acquire I3C bus through sysfs interface. Signed-off-by: Parshuram Thombare <pthombar@cadence.com> --- drivers/i3c/master.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index ea53fadeed99..ec27196e987c 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -607,6 +607,23 @@ 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, @@ -617,6 +634,7 @@ 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
WARNING: multiple messages have this Message-ID (diff)
From: Parshuram Thombare <pthombar@cadence.com> To: <bbrezillon@kernel.org>, <vitor.soares@synopsys.com> Cc: mparab@cadence.com, Parshuram Thombare <pthombar@cadence.com>, praneeth@ti.com, linux-kernel@vger.kernel.org, pgaj@cadence.com, linux-i3c@lists.infradead.org Subject: [PATCH v7 6/7] i3c: master: sysfs key for acquire bus Date: Mon, 11 May 2020 15:16:48 +0200 [thread overview] Message-ID: <1589203008-10880-1-git-send-email-pthombar@cadence.com> (raw) In-Reply-To: <1589202702-4879-1-git-send-email-pthombar@cadence.com> Added support to acquire I3C bus through sysfs interface. Signed-off-by: Parshuram Thombare <pthombar@cadence.com> --- drivers/i3c/master.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index ea53fadeed99..ec27196e987c 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -607,6 +607,23 @@ 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, @@ -617,6 +634,7 @@ 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 _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c
next prev parent reply other threads:[~2020-05-11 13:17 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-05-11 13:11 [PATCH v7 0/7] I3C mastership handover support Parshuram Thombare 2020-05-11 13:11 ` Parshuram Thombare 2020-05-11 13:12 ` [PATCH v7 1/7] i3c: master: secondary master initialization document Parshuram Thombare 2020-05-11 13:12 ` Parshuram Thombare 2020-05-11 16:05 ` Boris Brezillon 2020-05-11 16:05 ` Boris Brezillon 2020-05-12 5:03 ` Parshuram Raju Thombare 2020-05-12 5:03 ` Parshuram Raju Thombare 2020-05-12 7:35 ` Boris Brezillon 2020-05-12 7:35 ` Boris Brezillon 2020-05-11 13:13 ` [PATCH v7 2/7] i3c: master: use i3c_master_register only for main master Parshuram Thombare 2020-05-11 13:13 ` Parshuram Thombare 2020-05-11 15:44 ` Boris Brezillon 2020-05-11 15:44 ` Boris Brezillon 2020-05-12 4:57 ` Parshuram Raju Thombare 2020-05-12 4:57 ` Parshuram Raju Thombare 2020-05-11 13:13 ` [PATCH v7 3/7] i3c: master: add i3c_secondary_master_register Parshuram Thombare 2020-05-11 13:13 ` Parshuram Thombare 2020-05-11 16:14 ` Boris Brezillon 2020-05-11 16:14 ` Boris Brezillon 2020-05-12 6:42 ` Parshuram Raju Thombare 2020-05-12 6:42 ` Parshuram Raju Thombare 2020-05-11 13:14 ` [PATCH v7 4/7] i3c: master: add mastership handover support Parshuram Thombare 2020-05-11 13:14 ` Parshuram Thombare 2020-05-11 16:38 ` Boris Brezillon 2020-05-11 16:38 ` Boris Brezillon 2020-05-12 6:24 ` Parshuram Raju Thombare 2020-05-12 6:24 ` Parshuram Raju Thombare 2020-05-11 13:15 ` [PATCH v7 5/7] i3c: master: add defslvs processing Parshuram Thombare 2020-05-11 13:15 ` Parshuram Thombare 2020-05-11 13:16 ` Parshuram Thombare [this message] 2020-05-11 13:16 ` [PATCH v7 6/7] i3c: master: sysfs key for acquire bus Parshuram Thombare 2020-05-11 13:17 ` [PATCH v7 7/7] i3c: master: mastership handover, defslvs processing in cdns controller driver Parshuram Thombare 2020-05-11 13:17 ` Parshuram Thombare
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