From: Miquel Raynal <miquel.raynal@bootlin.com> To: Frank Li <Frank.Li@nxp.com> Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, imx@lists.linux.dev, joe@perches.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, zbigniew.lukwinski@linux.intel.com Subject: Re: [PATCH v4 1/6] i3c: master: add enable(disable) hot join in sys entry Date: Thu, 30 Nov 2023 11:13:21 +0100 [thread overview] Message-ID: <20231130111321.3ce6a961@xps-13> (raw) In-Reply-To: <20231129221225.387952-2-Frank.Li@nxp.com> Hi Frank, Frank.Li@nxp.com wrote on Wed, 29 Nov 2023 17:12:20 -0500: > Add hotjoin entry in sys file system allow user enable/disable hotjoin > feature. > > Add (*enable(disable)_hotjoin)() to i3c_master_controller_ops. > Add api i3c_master_enable(disable)_hotjoin(); > > Signed-off-by: Frank Li <Frank.Li@nxp.com> > --- > drivers/i3c/master.c | 84 ++++++++++++++++++++++++++++++++++++++ > include/linux/i3c/master.h | 5 +++ > 2 files changed, 89 insertions(+) > > diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c > index 08aeb69a78003..ed5e27cd20811 100644 > --- a/drivers/i3c/master.c > +++ b/drivers/i3c/master.c > @@ -526,6 +526,89 @@ static ssize_t i2c_scl_frequency_show(struct device *dev, > } > static DEVICE_ATTR_RO(i2c_scl_frequency); > > +static int i3c_set_hotjoin(struct i3c_master_controller *master, bool enable) > +{ > + int ret; > + > + if (!master || > + !master->ops || > + !master->ops->enable_hotjoin || > + !master->ops->disable_hotjoin > + ) Style is wrong here (max limit is 100 chars and the ) should not be on a new line) > + return -EINVAL; > + > + i3c_bus_normaluse_lock(&master->bus); > + > + if (enable) > + ret = master->ops->enable_hotjoin(master); > + else > + ret = master->ops->disable_hotjoin(master); > + > + master->hotjoin = enable; > + > + i3c_bus_normaluse_unlock(&master->bus); > + > + return ret; > +} > + > +static ssize_t hotjoin_store(struct device *dev, struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct i3c_bus *i3cbus = dev_to_i3cbus(dev); > + int ret; > + long res; > + > + if (!i3cbus->cur_master) > + return -EINVAL; > + > + if (kstrtol(buf, 10, &res)) > + return -EINVAL; Isn't there a better approach to get a y/n answer in sysfs? > + > + ret = i3c_set_hotjoin(i3cbus->cur_master->common.master, !!res); > + if (ret) > + return ret; > + > + return count; > +} > + Thanks, Miquèl
WARNING: multiple messages have this Message-ID (diff)
From: Miquel Raynal <miquel.raynal@bootlin.com> To: Frank Li <Frank.Li@nxp.com> Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, imx@lists.linux.dev, joe@perches.com, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, zbigniew.lukwinski@linux.intel.com Subject: Re: [PATCH v4 1/6] i3c: master: add enable(disable) hot join in sys entry Date: Thu, 30 Nov 2023 11:13:21 +0100 [thread overview] Message-ID: <20231130111321.3ce6a961@xps-13> (raw) In-Reply-To: <20231129221225.387952-2-Frank.Li@nxp.com> Hi Frank, Frank.Li@nxp.com wrote on Wed, 29 Nov 2023 17:12:20 -0500: > Add hotjoin entry in sys file system allow user enable/disable hotjoin > feature. > > Add (*enable(disable)_hotjoin)() to i3c_master_controller_ops. > Add api i3c_master_enable(disable)_hotjoin(); > > Signed-off-by: Frank Li <Frank.Li@nxp.com> > --- > drivers/i3c/master.c | 84 ++++++++++++++++++++++++++++++++++++++ > include/linux/i3c/master.h | 5 +++ > 2 files changed, 89 insertions(+) > > diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c > index 08aeb69a78003..ed5e27cd20811 100644 > --- a/drivers/i3c/master.c > +++ b/drivers/i3c/master.c > @@ -526,6 +526,89 @@ static ssize_t i2c_scl_frequency_show(struct device *dev, > } > static DEVICE_ATTR_RO(i2c_scl_frequency); > > +static int i3c_set_hotjoin(struct i3c_master_controller *master, bool enable) > +{ > + int ret; > + > + if (!master || > + !master->ops || > + !master->ops->enable_hotjoin || > + !master->ops->disable_hotjoin > + ) Style is wrong here (max limit is 100 chars and the ) should not be on a new line) > + return -EINVAL; > + > + i3c_bus_normaluse_lock(&master->bus); > + > + if (enable) > + ret = master->ops->enable_hotjoin(master); > + else > + ret = master->ops->disable_hotjoin(master); > + > + master->hotjoin = enable; > + > + i3c_bus_normaluse_unlock(&master->bus); > + > + return ret; > +} > + > +static ssize_t hotjoin_store(struct device *dev, struct device_attribute *attr, > + const char *buf, size_t count) > +{ > + struct i3c_bus *i3cbus = dev_to_i3cbus(dev); > + int ret; > + long res; > + > + if (!i3cbus->cur_master) > + return -EINVAL; > + > + if (kstrtol(buf, 10, &res)) > + return -EINVAL; Isn't there a better approach to get a y/n answer in sysfs? > + > + ret = i3c_set_hotjoin(i3cbus->cur_master->common.master, !!res); > + if (ret) > + return ret; > + > + return count; > +} > + Thanks, Miquèl -- linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c
next prev parent reply other threads:[~2023-11-30 10:13 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2023-11-29 22:12 [PATCH v4 0/6] i3c: master: some improvment for i3c master Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-29 22:12 ` [PATCH v4 1/6] i3c: master: add enable(disable) hot join in sys entry Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-30 10:13 ` Miquel Raynal [this message] 2023-11-30 10:13 ` Miquel Raynal 2023-11-29 22:12 ` [PATCH v4 2/6] i3c: master: svc: add hot join support Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-30 10:16 ` Miquel Raynal 2023-11-30 10:16 ` Miquel Raynal 2023-11-29 22:12 ` [PATCH v4 3/6] i3c: add actual_len in i3c_priv_xfer Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-30 10:17 ` Miquel Raynal 2023-11-30 10:17 ` Miquel Raynal 2023-11-29 22:12 ` [PATCH v4 4/6] i3c: svc: rename read_len as actual_len Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-29 22:12 ` [PATCH v4 5/6] i3c: master: svc return actual transfer data len Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-30 10:09 ` Miquel Raynal 2023-11-30 10:09 ` Miquel Raynal 2023-11-29 22:12 ` [PATCH v4 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device status Frank Li 2023-11-29 22:12 ` Frank Li 2023-11-30 10:19 ` Miquel Raynal 2023-11-30 10:19 ` Miquel Raynal 2023-11-30 17:49 ` Frank Li 2023-11-30 17:49 ` Frank Li 2023-11-30 19:16 ` Miquel Raynal 2023-11-30 19:16 ` Miquel Raynal 2023-11-30 22:00 ` [PATCH v4 6/6] i3c: add API i3c_dev_gettstatus_format1() to get target device statusy Frank Li 2023-11-30 22:00 ` Frank Li
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