From 3dda4e373c7474cfe280f4270b70c1563f92a2a7 Mon Sep 17 00:00:00 2001 From: Hansjoerg Lipp Date: Sat, 22 Apr 2006 18:43:00 +0200 Subject: [PATCH] [PATCH] i4l gigaset: move sysfs entry to tty class device Using the class device pointer returned by tty_register_device() with part 1 of the patch, attach the Gigaset drivers' "cidmode" sysfs entry to its tty class device, where it can be found more easily by users who do not know nor care which USB port the device is attached to. Signed-off-by: Hansjoerg Lipp Signed-off-by: Tilman Schmidt Signed-off-by: Greg Kroah-Hartman --- Documentation/isdn/README.gigaset | 7 ++++--- drivers/isdn/gigaset/common.c | 13 +++++++------ drivers/isdn/gigaset/gigaset.h | 1 + drivers/isdn/gigaset/interface.c | 10 +++++++++- drivers/isdn/gigaset/proc.c | 21 +++++++++++++-------- 5 files changed, 34 insertions(+), 18 deletions(-) diff --git a/Documentation/isdn/README.gigaset b/Documentation/isdn/README.gigaset index 85a64defd3..fa0d4cca96 100644 --- a/Documentation/isdn/README.gigaset +++ b/Documentation/isdn/README.gigaset @@ -124,7 +124,8 @@ GigaSet 307x Device Driver You can use some configuration tool of your distribution to configure this "modem" or configure pppd/wvdial manually. There are some example ppp - configuration files and chat scripts in the gigaset-VERSION/ppp directory. + configuration files and chat scripts in the gigaset-VERSION/ppp directory + in the driver packages from http://sourceforge.net/projects/gigaset307x/. Please note that the USB drivers are not able to change the state of the control lines (the M105 driver can be configured to use some undocumented control requests, if you really need the control lines, though). This means @@ -164,8 +165,8 @@ GigaSet 307x Device Driver If you want both of these at once, you are out of luck. - You can also use /sys/module//parameters/cidmode for changing - the CID mode setting ( is usb_gigaset or bas_gigaset). + You can also use /sys/class/tty/ttyGxy/cidmode for changing the CID mode + setting (ttyGxy is ttyGU0 or ttyGB0). 3. Troubleshooting diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c index e55767b2cc..acb7e26567 100644 --- a/drivers/isdn/gigaset/common.c +++ b/drivers/isdn/gigaset/common.c @@ -460,6 +460,9 @@ void gigaset_freecs(struct cardstate *cs) switch (cs->cs_init) { default: + /* clear device sysfs */ + gigaset_free_dev_sysfs(cs); + gigaset_if_free(cs); gig_dbg(DEBUG_INIT, "clearing hw"); @@ -699,6 +702,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, cs->open_count = 0; cs->dev = NULL; cs->tty = NULL; + cs->class = NULL; cs->cidmode = cidmode != 0; //if(onechannel) { //FIXME @@ -760,6 +764,9 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels, gigaset_if_init(cs); + /* set up device sysfs */ + gigaset_init_dev_sysfs(cs); + spin_lock_irqsave(&cs->lock, flags); cs->running = 1; spin_unlock_irqrestore(&cs->lock, flags); @@ -902,9 +909,6 @@ int gigaset_start(struct cardstate *cs) wait_event(cs->waitqueue, !cs->waiting); - /* set up device sysfs */ - gigaset_init_dev_sysfs(cs); - mutex_unlock(&cs->mutex); return 1; @@ -969,9 +973,6 @@ void gigaset_stop(struct cardstate *cs) //FIXME } - /* clear device sysfs */ - gigaset_free_dev_sysfs(cs); - cleanup_cs(cs); exit: diff --git a/drivers/isdn/gigaset/gigaset.h b/drivers/isdn/gigaset/gigaset.h index 22b9693f7c..8d63d82210 100644 --- a/drivers/isdn/gigaset/gigaset.h +++ b/drivers/isdn/gigaset/gigaset.h @@ -445,6 +445,7 @@ struct cardstate { struct gigaset_driver *driver; unsigned minor_index; struct device *dev; + struct class_device *class; const struct gigaset_ops *ops; diff --git a/drivers/isdn/gigaset/interface.c b/drivers/isdn/gigaset/interface.c index 08e4c4eea1..74fd234956 100644 --- a/drivers/isdn/gigaset/interface.c +++ b/drivers/isdn/gigaset/interface.c @@ -625,7 +625,14 @@ void gigaset_if_init(struct cardstate *cs) return; tasklet_init(&cs->if_wake_tasklet, &if_wake, (unsigned long) cs); - tty_register_device(drv->tty, cs->minor_index, NULL); + cs->class = tty_register_device(drv->tty, cs->minor_index, NULL); + + if (!IS_ERR(cs->class)) + class_set_devdata(cs->class, cs); + else { + warn("could not register device to the tty subsystem"); + cs->class = NULL; + } } void gigaset_if_free(struct cardstate *cs) @@ -638,6 +645,7 @@ void gigaset_if_free(struct cardstate *cs) tasklet_disable(&cs->if_wake_tasklet); tasklet_kill(&cs->if_wake_tasklet); + cs->class = NULL; tty_unregister_device(drv->tty, cs->minor_index); } diff --git a/drivers/isdn/gigaset/proc.c b/drivers/isdn/gigaset/proc.c index d267a636b5..9ae3a7f3e7 100644 --- a/drivers/isdn/gigaset/proc.c +++ b/drivers/isdn/gigaset/proc.c @@ -16,12 +16,11 @@ #include "gigaset.h" #include -static ssize_t show_cidmode(struct device *dev, struct device_attribute *attr, - char *buf) +static ssize_t show_cidmode(struct class_device *class, char *buf) { int ret; unsigned long flags; - struct cardstate *cs = dev_get_drvdata(dev); + struct cardstate *cs = class_get_devdata(class); spin_lock_irqsave(&cs->lock, flags); ret = sprintf(buf, "%u\n", cs->cidmode); @@ -30,10 +29,10 @@ static ssize_t show_cidmode(struct device *dev, struct device_attribute *attr, return ret; } -static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr, +static ssize_t set_cidmode(struct class_device *class, const char *buf, size_t count) { - struct cardstate *cs = dev_get_drvdata(dev); + struct cardstate *cs = class_get_devdata(class); long int value; char *end; @@ -65,18 +64,24 @@ static ssize_t set_cidmode(struct device *dev, struct device_attribute *attr, return count; } -static DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode); +static CLASS_DEVICE_ATTR(cidmode, S_IRUGO|S_IWUSR, show_cidmode, set_cidmode); /* free sysfs for device */ void gigaset_free_dev_sysfs(struct cardstate *cs) { + if (!cs->class) + return; + gig_dbg(DEBUG_INIT, "removing sysfs entries"); - device_remove_file(cs->dev, &dev_attr_cidmode); + class_device_remove_file(cs->class, &class_device_attr_cidmode); } /* initialize sysfs for device */ void gigaset_init_dev_sysfs(struct cardstate *cs) { + if (!cs->class) + return; + gig_dbg(DEBUG_INIT, "setting up sysfs"); - device_create_file(cs->dev, &dev_attr_cidmode); + class_device_create_file(cs->class, &class_device_attr_cidmode); } -- 2.39.5