All of lore.kernel.org
 help / color / mirror / Atom feed
From: Parshuram Thombare <pthombar@cadence.com>
To: <alexandre.belloni@bootlin.com>, <slongerbeam@gmail.com>,
	<vitor.soares@synopsys.com>
Cc: <linux-i3c@lists.infradead.org>, <linux-kernel@vger.kernel.org>,
	<mparab@cadence.com>, <praneeth@ti.com>,
	Parshuram Thombare <pthombar@cadence.com>
Subject: [PATCH v10 6/7] i3c: master: sysfs key for acquire bus
Date: Mon, 30 Nov 2020 07:20:02 +0100	[thread overview]
Message-ID: <1606717202-4206-1-git-send-email-pthombar@cadence.com> (raw)
In-Reply-To: <1606716983-3645-1-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 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index c01ba00..beb7495 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -581,6 +581,23 @@ 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,
@@ -591,6 +608,7 @@ static ssize_t i2c_scl_frequency_show(struct device *dev,
 	&dev_attr_pid.attr,
 	&dev_attr_dynamic_address.attr,
 	&dev_attr_hdrcap.attr,
+	&dev_attr_i3c_acquire_bus.attr,
 	NULL,
 };
 ATTRIBUTE_GROUPS(i3c_masterdev);
-- 
1.7.1


WARNING: multiple messages have this Message-ID (diff)
From: Parshuram Thombare <pthombar@cadence.com>
To: <alexandre.belloni@bootlin.com>, <slongerbeam@gmail.com>,
	<vitor.soares@synopsys.com>
Cc: praneeth@ti.com, mparab@cadence.com,
	linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org,
	Parshuram Thombare <pthombar@cadence.com>
Subject: [PATCH v10 6/7] i3c: master: sysfs key for acquire bus
Date: Mon, 30 Nov 2020 07:20:02 +0100	[thread overview]
Message-ID: <1606717202-4206-1-git-send-email-pthombar@cadence.com> (raw)
In-Reply-To: <1606716983-3645-1-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 files changed, 18 insertions(+), 0 deletions(-)

diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index c01ba00..beb7495 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -581,6 +581,23 @@ 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,
@@ -591,6 +608,7 @@ static ssize_t i2c_scl_frequency_show(struct device *dev,
 	&dev_attr_pid.attr,
 	&dev_attr_dynamic_address.attr,
 	&dev_attr_hdrcap.attr,
+	&dev_attr_i3c_acquire_bus.attr,
 	NULL,
 };
 ATTRIBUTE_GROUPS(i3c_masterdev);
-- 
1.7.1


-- 
linux-i3c mailing list
linux-i3c@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-i3c

  parent reply	other threads:[~2020-11-30  6:21 UTC|newest]

Thread overview: 38+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-30  6:16 [PATCH v10 0/7] I3C mastership handover support Parshuram Thombare
2020-11-30  6:16 ` Parshuram Thombare
2020-11-30  6:16 ` [PATCH v10 1/7] i3c: master: master initialization flow document Parshuram Thombare
2020-11-30  6:16   ` Parshuram Thombare
2020-11-30  6:17 ` [PATCH v10 2/7] i3c: master: use i3c_master_register only for main master Parshuram Thombare
2020-11-30  6:17   ` Parshuram Thombare
2020-12-04  4:24   ` Nicolas Pitre
2020-12-04  4:24     ` Nicolas Pitre
2020-12-08  5:47     ` Parshuram Raju Thombare
2020-12-08  5:47       ` Parshuram Raju Thombare
2021-06-08 23:21       ` Alexandre Belloni
2021-06-08 23:21         ` Alexandre Belloni
2021-06-17  8:42         ` Parshuram Raju Thombare
2021-06-17  8:42           ` Parshuram Raju Thombare
2020-11-30  6:18 ` [PATCH v10 3/7] i3c: master: add i3c_secondary_master_register Parshuram Thombare
2020-11-30  6:18   ` Parshuram Thombare
2020-12-04  4:42   ` Nicolas Pitre
2020-12-04  4:42     ` Nicolas Pitre
2020-12-08  6:00     ` Parshuram Raju Thombare
2020-12-08  6:00       ` Parshuram Raju Thombare
2020-11-30  6:18 ` [PATCH v10 4/7] i3c: master: add mastership handover support Parshuram Thombare
2020-11-30  6:18   ` Parshuram Thombare
2020-11-30  6:19 ` [PATCH v10 5/7] i3c: master: add defslvs processing Parshuram Thombare
2020-11-30  6:19   ` Parshuram Thombare
2020-11-30  6:20 ` Parshuram Thombare [this message]
2020-11-30  6:20   ` [PATCH v10 6/7] i3c: master: sysfs key for acquire bus Parshuram Thombare
2021-06-08 23:33   ` Alexandre Belloni
2021-06-08 23:33     ` Alexandre Belloni
2021-06-17  9:13     ` Parshuram Raju Thombare
2021-06-17  9:13       ` Parshuram Raju Thombare
2020-11-30  6:20 ` [PATCH v10 7/7] i3c: master: mastership handover, defslvs processing in cdns controller driver Parshuram Thombare
2020-11-30  6:20   ` Parshuram Thombare
2021-06-08 23:47   ` Alexandre Belloni
2021-06-08 23:47     ` Alexandre Belloni
2021-06-17 10:28     ` Parshuram Raju Thombare
2021-06-17 10:28       ` Parshuram Raju Thombare
2021-03-04 10:06 ` [PATCH v10 0/7] I3C mastership handover support Parshuram Raju Thombare
2021-03-04 10:06   ` Parshuram Raju Thombare

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1606717202-4206-1-git-send-email-pthombar@cadence.com \
    --to=pthombar@cadence.com \
    --cc=alexandre.belloni@bootlin.com \
    --cc=linux-i3c@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mparab@cadence.com \
    --cc=praneeth@ti.com \
    --cc=slongerbeam@gmail.com \
    --cc=vitor.soares@synopsys.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.