HID: roccat: use class for char device for sysfs attribute creation
Adding sysfs attributes to an already created device raises no userland
notification. Now the device drivers associate the devices attributes
with a class and use this for roccat event char device creation.
Signed-off-by: Stefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/drivers/hid/hid-roccat-kone.c b/drivers/hid/hid-roccat-kone.c
index 73199de..648d28e 100644
--- a/drivers/hid/hid-roccat-kone.c
+++ b/drivers/hid/hid-roccat-kone.c
@@ -35,6 +35,9 @@
#include "hid-roccat.h"
#include "hid-roccat-kone.h"
+/* kone_class is used for creating sysfs attributes via roccat char device */
+static struct class *kone_class;
+
static void kone_set_settings_checksum(struct kone_settings *settings)
{
uint16_t checksum = 0;
@@ -261,7 +264,8 @@
static ssize_t kone_sysfs_read_settings(struct file *fp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count) {
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
if (off >= sizeof(struct kone_settings))
@@ -285,7 +289,8 @@
static ssize_t kone_sysfs_write_settings(struct file *fp, struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count) {
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0, difference;
@@ -321,7 +326,8 @@
static ssize_t kone_sysfs_read_profilex(struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count, int number) {
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
if (off >= sizeof(struct kone_profile))
@@ -371,7 +377,8 @@
static ssize_t kone_sysfs_write_profilex(struct kobject *kobj,
struct bin_attribute *attr, char *buf,
loff_t off, size_t count, int number) {
- struct device *dev = container_of(kobj, struct device, kobj);
+ struct device *dev =
+ container_of(kobj, struct device, kobj)->parent->parent;
struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
struct kone_profile *profile;
@@ -432,14 +439,16 @@
static ssize_t kone_sysfs_show_actual_profile(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
+ struct kone_device *kone =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", kone->actual_profile);
}
static ssize_t kone_sysfs_show_actual_dpi(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
+ struct kone_device *kone =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", kone->actual_dpi);
}
@@ -447,11 +456,15 @@
static ssize_t kone_sysfs_show_weight(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
- struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+ struct kone_device *kone;
+ struct usb_device *usb_dev;
int weight = 0;
int retval;
+ dev = dev->parent->parent;
+ kone = hid_get_drvdata(dev_get_drvdata(dev));
+ usb_dev = interface_to_usbdev(to_usb_interface(dev));
+
mutex_lock(&kone->kone_lock);
retval = kone_get_weight(usb_dev, &weight);
mutex_unlock(&kone->kone_lock);
@@ -464,14 +477,16 @@
static ssize_t kone_sysfs_show_firmware_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
+ struct kone_device *kone =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", kone->firmware_version);
}
static ssize_t kone_sysfs_show_tcu(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
+ struct kone_device *kone =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", kone->settings.tcu);
}
@@ -503,11 +518,15 @@
static ssize_t kone_sysfs_set_tcu(struct device *dev,
struct device_attribute *attr, char const *buf, size_t size)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
- struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+ struct kone_device *kone;
+ struct usb_device *usb_dev;
int retval;
unsigned long state;
+ dev = dev->parent->parent;
+ kone = hid_get_drvdata(dev_get_drvdata(dev));
+ usb_dev = interface_to_usbdev(to_usb_interface(dev));
+
retval = strict_strtoul(buf, 10, &state);
if (retval)
return retval;
@@ -578,18 +597,23 @@
static ssize_t kone_sysfs_show_startup_profile(struct device *dev,
struct device_attribute *attr, char *buf)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
+ struct kone_device *kone =
+ hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", kone->settings.startup_profile);
}
static ssize_t kone_sysfs_set_startup_profile(struct device *dev,
struct device_attribute *attr, char const *buf, size_t size)
{
- struct kone_device *kone = hid_get_drvdata(dev_get_drvdata(dev));
- struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
+ struct kone_device *kone;
+ struct usb_device *usb_dev;
int retval;
unsigned long new_startup_profile;
+ dev = dev->parent->parent;
+ kone = hid_get_drvdata(dev_get_drvdata(dev));
+ usb_dev = interface_to_usbdev(to_usb_interface(dev));
+
retval = strict_strtoul(buf, 10, &new_startup_profile);
if (retval)
return retval;
@@ -616,160 +640,87 @@
return size;
}
-/*
- * Read actual dpi settings.
- * Returns raw value for further processing. Refer to enum kone_polling_rates to
- * get real value.
- */
-static DEVICE_ATTR(actual_dpi, 0440, kone_sysfs_show_actual_dpi, NULL);
+static struct device_attribute kone_attributes[] = {
+ /*
+ * Read actual dpi settings.
+ * Returns raw value for further processing. Refer to enum
+ * kone_polling_rates to get real value.
+ */
+ __ATTR(actual_dpi, 0440, kone_sysfs_show_actual_dpi, NULL),
+ __ATTR(actual_profile, 0440, kone_sysfs_show_actual_profile, NULL),
-static DEVICE_ATTR(actual_profile, 0440, kone_sysfs_show_actual_profile, NULL);
+ /*
+ * The mouse can be equipped with one of four supplied weights from 5
+ * to 20 grams which are recognized and its value can be read out.
+ * This returns the raw value reported by the mouse for easy evaluation
+ * by software. Refer to enum kone_weights to get corresponding real
+ * weight.
+ */
+ __ATTR(weight, 0440, kone_sysfs_show_weight, NULL),
-/*
- * The mouse can be equipped with one of four supplied weights from 5 to 20
- * grams which are recognized and its value can be read out.
- * This returns the raw value reported by the mouse for easy evaluation by
- * software. Refer to enum kone_weights to get corresponding real weight.
- */
-static DEVICE_ATTR(weight, 0440, kone_sysfs_show_weight, NULL);
+ /*
+ * Prints firmware version stored in mouse as integer.
+ * The raw value reported by the mouse is returned for easy evaluation,
+ * to get the real version number the decimal point has to be shifted 2
+ * positions to the left. E.g. a value of 138 means 1.38.
+ */
+ __ATTR(firmware_version, 0440,
+ kone_sysfs_show_firmware_version, NULL),
-/*
- * Prints firmware version stored in mouse as integer.
- * The raw value reported by the mouse is returned for easy evaluation, to get
- * the real version number the decimal point has to be shifted 2 positions to
- * the left. E.g. a value of 138 means 1.38.
- */
-static DEVICE_ATTR(firmware_version, 0440,
- kone_sysfs_show_firmware_version, NULL);
+ /*
+ * Prints state of Tracking Control Unit as number where 0 = off and
+ * 1 = on. Writing 0 deactivates tcu and writing 1 calibrates and
+ * activates the tcu
+ */
+ __ATTR(tcu, 0660, kone_sysfs_show_tcu, kone_sysfs_set_tcu),
-/*
- * Prints state of Tracking Control Unit as number where 0 = off and 1 = on
- * Writing 0 deactivates tcu and writing 1 calibrates and activates the tcu
- */
-static DEVICE_ATTR(tcu, 0660, kone_sysfs_show_tcu, kone_sysfs_set_tcu);
-
-/* Prints and takes the number of the profile the mouse starts with */
-static DEVICE_ATTR(startup_profile, 0660,
- kone_sysfs_show_startup_profile,
- kone_sysfs_set_startup_profile);
-
-static struct attribute *kone_attributes[] = {
- &dev_attr_actual_dpi.attr,
- &dev_attr_actual_profile.attr,
- &dev_attr_weight.attr,
- &dev_attr_firmware_version.attr,
- &dev_attr_tcu.attr,
- &dev_attr_startup_profile.attr,
- NULL
+ /* Prints and takes the number of the profile the mouse starts with */
+ __ATTR(startup_profile, 0660,
+ kone_sysfs_show_startup_profile,
+ kone_sysfs_set_startup_profile),
+ __ATTR_NULL
};
-static struct attribute_group kone_attribute_group = {
- .attrs = kone_attributes
+static struct bin_attribute kone_bin_attributes[] = {
+ {
+ .attr = { .name = "settings", .mode = 0660 },
+ .size = sizeof(struct kone_settings),
+ .read = kone_sysfs_read_settings,
+ .write = kone_sysfs_write_settings
+ },
+ {
+ .attr = { .name = "profile1", .mode = 0660 },
+ .size = sizeof(struct kone_profile),
+ .read = kone_sysfs_read_profile1,
+ .write = kone_sysfs_write_profile1
+ },
+ {
+ .attr = { .name = "profile2", .mode = 0660 },
+ .size = sizeof(struct kone_profile),
+ .read = kone_sysfs_read_profile2,
+ .write = kone_sysfs_write_profile2
+ },
+ {
+ .attr = { .name = "profile3", .mode = 0660 },
+ .size = sizeof(struct kone_profile),
+ .read = kone_sysfs_read_profile3,
+ .write = kone_sysfs_write_profile3
+ },
+ {
+ .attr = { .name = "profile4", .mode = 0660 },
+ .size = sizeof(struct kone_profile),
+ .read = kone_sysfs_read_profile4,
+ .write = kone_sysfs_write_profile4
+ },
+ {
+ .attr = { .name = "profile5", .mode = 0660 },
+ .size = sizeof(struct kone_profile),
+ .read = kone_sysfs_read_profile5,
+ .write = kone_sysfs_write_profile5
+ },
+ __ATTR_NULL
};
-static struct bin_attribute kone_settings_attr = {
- .attr = { .name = "settings", .mode = 0660 },
- .size = sizeof(struct kone_settings),
- .read = kone_sysfs_read_settings,
- .write = kone_sysfs_write_settings
-};
-
-static struct bin_attribute kone_profile1_attr = {
- .attr = { .name = "profile1", .mode = 0660 },
- .size = sizeof(struct kone_profile),
- .read = kone_sysfs_read_profile1,
- .write = kone_sysfs_write_profile1
-};
-
-static struct bin_attribute kone_profile2_attr = {
- .attr = { .name = "profile2", .mode = 0660 },
- .size = sizeof(struct kone_profile),
- .read = kone_sysfs_read_profile2,
- .write = kone_sysfs_write_profile2
-};
-
-static struct bin_attribute kone_profile3_attr = {
- .attr = { .name = "profile3", .mode = 0660 },
- .size = sizeof(struct kone_profile),
- .read = kone_sysfs_read_profile3,
- .write = kone_sysfs_write_profile3
-};
-
-static struct bin_attribute kone_profile4_attr = {
- .attr = { .name = "profile4", .mode = 0660 },
- .size = sizeof(struct kone_profile),
- .read = kone_sysfs_read_profile4,
- .write = kone_sysfs_write_profile4
-};
-
-static struct bin_attribute kone_profile5_attr = {
- .attr = { .name = "profile5", .mode = 0660 },
- .size = sizeof(struct kone_profile),
- .read = kone_sysfs_read_profile5,
- .write = kone_sysfs_write_profile5
-};
-
-static int kone_create_sysfs_attributes(struct usb_interface *intf)
-{
- int retval;
-
- retval = sysfs_create_group(&intf->dev.kobj, &kone_attribute_group);
- if (retval)
- goto exit_1;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_settings_attr);
- if (retval)
- goto exit_2;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_profile1_attr);
- if (retval)
- goto exit_3;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_profile2_attr);
- if (retval)
- goto exit_4;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_profile3_attr);
- if (retval)
- goto exit_5;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_profile4_attr);
- if (retval)
- goto exit_6;
-
- retval = sysfs_create_bin_file(&intf->dev.kobj, &kone_profile5_attr);
- if (retval)
- goto exit_7;
-
- return 0;
-
-exit_7:
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile4_attr);
-exit_6:
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile3_attr);
-exit_5:
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile2_attr);
-exit_4:
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile1_attr);
-exit_3:
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_settings_attr);
-exit_2:
- sysfs_remove_group(&intf->dev.kobj, &kone_attribute_group);
-exit_1:
- return retval;
-}
-
-static void kone_remove_sysfs_attributes(struct usb_interface *intf)
-{
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile5_attr);
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile4_attr);
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile3_attr);
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile2_attr);
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_profile1_attr);
- sysfs_remove_bin_file(&intf->dev.kobj, &kone_settings_attr);
- sysfs_remove_group(&intf->dev.kobj, &kone_attribute_group);
-}
-
static int kone_init_kone_device_struct(struct usb_device *usb_dev,
struct kone_device *kone)
{
@@ -828,7 +779,7 @@
goto exit_free;
}
- retval = roccat_connect(hdev);
+ retval = roccat_connect(kone_class, hdev);
if (retval < 0) {
hid_err(hdev, "couldn't init char dev\n");
/* be tolerant about not getting chrdev */
@@ -836,12 +787,6 @@
kone->roccat_claimed = 1;
kone->chrdev_minor = retval;
}
-
- retval = kone_create_sysfs_attributes(intf);
- if (retval) {
- hid_err(hdev, "cannot create sysfs files\n");
- goto exit_free;
- }
} else {
hid_set_drvdata(hdev, NULL);
}
@@ -852,7 +797,6 @@
return retval;
}
-
static void kone_remove_specials(struct hid_device *hdev)
{
struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
@@ -860,7 +804,6 @@
if (intf->cur_altsetting->desc.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE) {
- kone_remove_sysfs_attributes(intf);
kone = hid_get_drvdata(hdev);
if (kone->roccat_claimed)
roccat_disconnect(kone->chrdev_minor);
@@ -1004,11 +947,24 @@
static int __init kone_init(void)
{
- return hid_register_driver(&kone_driver);
+ int retval;
+
+ /* class name has to be same as driver name */
+ kone_class = class_create(THIS_MODULE, "kone");
+ if (IS_ERR(kone_class))
+ return PTR_ERR(kone_class);
+ kone_class->dev_attrs = kone_attributes;
+ kone_class->dev_bin_attrs = kone_bin_attributes;
+
+ retval = hid_register_driver(&kone_driver);
+ if (retval)
+ class_destroy(kone_class);
+ return retval;
}
static void __exit kone_exit(void)
{
+ class_destroy(kone_class);
hid_unregister_driver(&kone_driver);
}