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HID: roccat: use class for char device for sysfs attribute creation

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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>
This commit is contained in:
Stefan Achatz
2010-11-26 19:57:33 +00:00
committed by Jiri Kosina
parent c97415a725
commit 5012aada50
4 changed files with 209 additions and 384 deletions
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273
drivers/hid/hid-roccat-pyra.c
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@@ -27,6 +27,9 @@
#include "hid-roccat.h"
#include "hid-roccat-pyra.h"
/* pyra_class is used for creating sysfs attributes via roccat char device */
static struct class *pyra_class;
static void profile_activated(struct pyra_device *pyra,
unsigned int new_profile)
{
@@ -222,7 +225,8 @@ static ssize_t pyra_sysfs_read_profilex_settings(struct file *fp,
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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
if (off >= sizeof(struct pyra_profile_settings))
@@ -283,7 +287,8 @@ static ssize_t pyra_sysfs_read_profilex_buttons(struct file *fp,
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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
if (off >= sizeof(struct pyra_profile_buttons))
@@ -344,7 +349,8 @@ static ssize_t pyra_sysfs_write_profile_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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0;
@@ -380,7 +386,8 @@ static ssize_t pyra_sysfs_write_profile_buttons(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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0;
@@ -416,7 +423,8 @@ static ssize_t pyra_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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
if (off >= sizeof(struct pyra_settings))
@@ -436,7 +444,8 @@ static ssize_t pyra_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 pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct usb_device *usb_dev = interface_to_usbdev(to_usb_interface(dev));
int retval = 0;
@@ -468,255 +477,115 @@ static ssize_t pyra_sysfs_write_settings(struct file *fp,
static ssize_t pyra_sysfs_show_actual_cpi(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_cpi);
}
static ssize_t pyra_sysfs_show_actual_profile(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", pyra->actual_profile);
}
static ssize_t pyra_sysfs_show_firmware_version(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", pyra->firmware_version);
}
static ssize_t pyra_sysfs_show_startup_profile(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct pyra_device *pyra = hid_get_drvdata(dev_get_drvdata(dev));
struct pyra_device *pyra =
hid_get_drvdata(dev_get_drvdata(dev->parent->parent));
return snprintf(buf, PAGE_SIZE, "%d\n", pyra->settings.startup_profile);
}
static DEVICE_ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL);
static DEVICE_ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL);
static DEVICE_ATTR(firmware_version, 0440,
pyra_sysfs_show_firmware_version, NULL);
static DEVICE_ATTR(startup_profile, 0440,
pyra_sysfs_show_startup_profile, NULL);
static struct attribute *pyra_attributes[] = {
&dev_attr_actual_cpi.attr,
&dev_attr_actual_profile.attr,
&dev_attr_firmware_version.attr,
&dev_attr_startup_profile.attr,
NULL
static struct device_attribute pyra_attributes[] = {
__ATTR(actual_cpi, 0440, pyra_sysfs_show_actual_cpi, NULL),
__ATTR(actual_profile, 0440, pyra_sysfs_show_actual_profile, NULL),
__ATTR(firmware_version, 0440,
pyra_sysfs_show_firmware_version, NULL),
__ATTR(startup_profile, 0440,
pyra_sysfs_show_startup_profile, NULL),
__ATTR_NULL
};
static struct attribute_group pyra_attribute_group = {
.attrs = pyra_attributes
};
static struct bin_attribute pyra_profile_settings_attr = {
static struct bin_attribute pyra_bin_attributes[] = {
{
.attr = { .name = "profile_settings", .mode = 0220 },
.size = sizeof(struct pyra_profile_settings),
.write = pyra_sysfs_write_profile_settings
};
static struct bin_attribute pyra_profile1_settings_attr = {
},
{
.attr = { .name = "profile1_settings", .mode = 0440 },
.size = sizeof(struct pyra_profile_settings),
.read = pyra_sysfs_read_profile1_settings
};
static struct bin_attribute pyra_profile2_settings_attr = {
},
{
.attr = { .name = "profile2_settings", .mode = 0440 },
.size = sizeof(struct pyra_profile_settings),
.read = pyra_sysfs_read_profile2_settings
};
static struct bin_attribute pyra_profile3_settings_attr = {
},
{
.attr = { .name = "profile3_settings", .mode = 0440 },
.size = sizeof(struct pyra_profile_settings),
.read = pyra_sysfs_read_profile3_settings
};
static struct bin_attribute pyra_profile4_settings_attr = {
},
{
.attr = { .name = "profile4_settings", .mode = 0440 },
.size = sizeof(struct pyra_profile_settings),
.read = pyra_sysfs_read_profile4_settings
};
static struct bin_attribute pyra_profile5_settings_attr = {
},
{
.attr = { .name = "profile5_settings", .mode = 0440 },
.size = sizeof(struct pyra_profile_settings),
.read = pyra_sysfs_read_profile5_settings
};
static struct bin_attribute pyra_profile_buttons_attr = {
},
{
.attr = { .name = "profile_buttons", .mode = 0220 },
.size = sizeof(struct pyra_profile_buttons),
.write = pyra_sysfs_write_profile_buttons
};
static struct bin_attribute pyra_profile1_buttons_attr = {
},
{
.attr = { .name = "profile1_buttons", .mode = 0440 },
.size = sizeof(struct pyra_profile_buttons),
.read = pyra_sysfs_read_profile1_buttons
};
static struct bin_attribute pyra_profile2_buttons_attr = {
},
{
.attr = { .name = "profile2_buttons", .mode = 0440 },
.size = sizeof(struct pyra_profile_buttons),
.read = pyra_sysfs_read_profile2_buttons
};
static struct bin_attribute pyra_profile3_buttons_attr = {
},
{
.attr = { .name = "profile3_buttons", .mode = 0440 },
.size = sizeof(struct pyra_profile_buttons),
.read = pyra_sysfs_read_profile3_buttons
};
static struct bin_attribute pyra_profile4_buttons_attr = {
},
{
.attr = { .name = "profile4_buttons", .mode = 0440 },
.size = sizeof(struct pyra_profile_buttons),
.read = pyra_sysfs_read_profile4_buttons
};
static struct bin_attribute pyra_profile5_buttons_attr = {
},
{
.attr = { .name = "profile5_buttons", .mode = 0440 },
.size = sizeof(struct pyra_profile_buttons),
.read = pyra_sysfs_read_profile5_buttons
};
static struct bin_attribute pyra_settings_attr = {
},
{
.attr = { .name = "settings", .mode = 0660 },
.size = sizeof(struct pyra_settings),
.read = pyra_sysfs_read_settings,
.write = pyra_sysfs_write_settings
},
__ATTR_NULL
};
static int pyra_create_sysfs_attributes(struct usb_interface *intf)
{
int retval;
retval = sysfs_create_group(&intf->dev.kobj, &pyra_attribute_group);
if (retval)
goto exit_1;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile_settings_attr);
if (retval)
goto exit_2;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile1_settings_attr);
if (retval)
goto exit_3;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile2_settings_attr);
if (retval)
goto exit_4;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile3_settings_attr);
if (retval)
goto exit_5;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile4_settings_attr);
if (retval)
goto exit_6;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile5_settings_attr);
if (retval)
goto exit_7;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile_buttons_attr);
if (retval)
goto exit_8;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile1_buttons_attr);
if (retval)
goto exit_9;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile2_buttons_attr);
if (retval)
goto exit_10;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile3_buttons_attr);
if (retval)
goto exit_11;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile4_buttons_attr);
if (retval)
goto exit_12;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_profile5_buttons_attr);
if (retval)
goto exit_13;
retval = sysfs_create_bin_file(&intf->dev.kobj,
&pyra_settings_attr);
if (retval)
goto exit_14;
return 0;
exit_14:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile5_buttons_attr);
exit_13:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile4_buttons_attr);
exit_12:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile3_buttons_attr);
exit_11:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile2_buttons_attr);
exit_10:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile1_buttons_attr);
exit_9:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile_buttons_attr);
exit_8:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile5_settings_attr);
exit_7:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile4_settings_attr);
exit_6:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile3_settings_attr);
exit_5:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile2_settings_attr);
exit_4:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile1_settings_attr);
exit_3:
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile_settings_attr);
exit_2:
sysfs_remove_group(&intf->dev.kobj, &pyra_attribute_group);
exit_1:
return retval;
}
static void pyra_remove_sysfs_attributes(struct usb_interface *intf)
{
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile5_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile4_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile3_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile2_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile1_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile_buttons_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile5_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile4_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile3_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile2_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile1_settings_attr);
sysfs_remove_bin_file(&intf->dev.kobj, &pyra_profile_settings_attr);
sysfs_remove_group(&intf->dev.kobj, &pyra_attribute_group);
}
static int pyra_init_pyra_device_struct(struct usb_device *usb_dev,
struct pyra_device *pyra)
{
@@ -780,19 +649,13 @@ static int pyra_init_specials(struct hid_device *hdev)
goto exit_free;
}
retval = roccat_connect(hdev);
retval = roccat_connect(pyra_class, hdev);
if (retval < 0) {
hid_err(hdev, "couldn't init char dev\n");
} else {
pyra->chrdev_minor = retval;
pyra->roccat_claimed = 1;
}
retval = pyra_create_sysfs_attributes(intf);
if (retval) {
hid_err(hdev, "cannot create sysfs files\n");
goto exit_free;
}
} else {
hid_set_drvdata(hdev, NULL);
}
@@ -810,7 +673,6 @@ static void pyra_remove_specials(struct hid_device *hdev)
if (intf->cur_altsetting->desc.bInterfaceProtocol
== USB_INTERFACE_PROTOCOL_MOUSE) {
pyra_remove_sysfs_attributes(intf);
pyra = hid_get_drvdata(hdev);
if (pyra->roccat_claimed)
roccat_disconnect(pyra->chrdev_minor);
@@ -950,11 +812,24 @@ static struct hid_driver pyra_driver = {
static int __init pyra_init(void)
{
return hid_register_driver(&pyra_driver);
int retval;
/* class name has to be same as driver name */
pyra_class = class_create(THIS_MODULE, "pyra");
if (IS_ERR(pyra_class))
return PTR_ERR(pyra_class);
pyra_class->dev_attrs = pyra_attributes;
pyra_class->dev_bin_attrs = pyra_bin_attributes;
retval = hid_register_driver(&pyra_driver);
if (retval)
class_destroy(pyra_class);
return retval;
}
static void __exit pyra_exit(void)
{
class_destroy(pyra_class);
hid_unregister_driver(&pyra_driver);
}