On Wed, 17 Oct 2012, Stefan Achatz wrote: > tcu sysfs attr was used to only control calibration process so far. Reverse > engineering the firmware revealed direct sensor register access. Allowing > readout of tcu permits usage of this feature. > > Signed-off-by: Stefan Achatz <erazor_de@xxxxxxxxxxxxxxxxxxxxx> > --- > .../ABI/testing/sysfs-driver-hid-roccat-koneplus | 6 +++--- > drivers/hid/hid-roccat-koneplus.c | 11 ++++++++++- > 2 files changed, 13 insertions(+), 4 deletions(-) > > diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus > index 65e6e5d..f9e2a61 100644 > --- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus > +++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus > @@ -104,9 +104,9 @@ What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid- > Date: October 2010 > Contact: Stefan Achatz <erazor_de@xxxxxxxxxxxxxxxxxxxxx> > Description: When written a calibration process for the tracking control unit > - can be initiated/cancelled. > - The data has to be 3 bytes long. > - This file is writeonly. > + can be initiated/cancelled. Also lets one read/write sensor > + registers. > + The data has to be 4 bytes long. > Users: http://roccat.sourceforge.net > > What: /sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/tcu_image > diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c > index f5602fe..c47540a 100644 > --- a/drivers/hid/hid-roccat-koneplus.c > +++ b/drivers/hid/hid-roccat-koneplus.c > @@ -222,6 +222,14 @@ static ssize_t koneplus_sysfs_write_tcu(struct file *fp, > sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU); > } > > +static ssize_t koneplus_sysfs_read_tcu(struct file *fp, > + struct kobject *kobj, struct bin_attribute *attr, char *buf, > + loff_t off, size_t count) > +{ > + return koneplus_sysfs_read(fp, kobj, buf, off, count, > + sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU); > +} > + > static ssize_t koneplus_sysfs_read_tcu_image(struct file *fp, > struct kobject *kobj, struct bin_attribute *attr, char *buf, > loff_t off, size_t count) > @@ -426,8 +434,9 @@ static struct bin_attribute koneplus_bin_attributes[] = { > .write = koneplus_sysfs_write_sensor > }, > { > - .attr = { .name = "tcu", .mode = 0220 }, > + .attr = { .name = "tcu", .mode = 0660 }, > .size = sizeof(struct koneplus_tcu), > + .read = koneplus_sysfs_read_tcu, > .write = koneplus_sysfs_write_tcu > }, > { Applied, thanks. -- Jiri Kosina SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
