V4L/DVB: ir: use a real device instead of a virtual class

Change the ir-sysfs approach to create irrcv0 as a device, instead of
using class_dev. Also, change the way input is registered, in order
to make its parent to be the irrcv device.

Due to this change, now the event device is created under
/sys/class/ir/irrcv class:

/sys/class/irrcv/irrcv0/
|-- current_protocol
|-- device -> ../../../1-3
|-- input9
|   |-- capabilities
|   |   |-- abs
...

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

diff --git a/drivers/media/IR/ir-keytable.c b/drivers/media/IR/ir-keytable.c
index bfca26d..af1f4d7 100644 (file)
--- a/drivers/media/IR/ir-keytable.c
+++ b/drivers/media/IR/ir-keytable.c
@@ -449,22 +449,15 @@ int ir_input_register(struct input_dev *input_dev,
        input_dev->setkeycode = ir_setkeycode;
        input_set_drvdata(input_dev, ir_dev);
 
-       rc = input_register_device(input_dev);
-       if (rc < 0)
-               goto err;
-
        rc = ir_register_class(input_dev);
-       if (rc < 0) {
-               input_unregister_device(input_dev);
+       if (rc < 0)
                goto err;
-       }
 
        return 0;
 
 err:
        kfree(rc_tab->scan);
        kfree(ir_dev);
-       input_set_drvdata(input_dev, NULL);
        return rc;
 }
 EXPORT_SYMBOL_GPL(ir_input_register);
@@ -493,7 +486,6 @@ void ir_input_unregister(struct input_dev *dev)
        ir_unregister_class(dev);
 
        kfree(ir_dev);
-       input_unregister_device(dev);
 }
 EXPORT_SYMBOL_GPL(ir_input_unregister);
 

diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
index e14e6c4..59bd388 100644 (file)
--- a/drivers/media/IR/ir-sysfs.c
+++ b/drivers/media/IR/ir-sysfs.c
@@ -23,7 +23,15 @@
 static unsigned long ir_core_dev_number;
 
 /* class for /sys/class/irrcv */
-static struct class *ir_input_class;
+static char *ir_devnode(struct device *dev, mode_t *mode)
+{
+       return kasprintf(GFP_KERNEL, "irrcv/%s", dev_name(dev));
+}
+
+struct class ir_input_class = {
+       .name           = "irrcv",
+       .devnode        = ir_devnode,
+};
 
 /**
  * show_protocol() - shows the current IR protocol
@@ -129,6 +137,20 @@ static struct attribute *ir_dev_attrs[] = {
        NULL,
 };
 
+static struct attribute_group ir_dev_attr_grp = {
+       .attrs  = ir_dev_attrs,
+};
+
+static const struct attribute_group *ir_dev_attr_groups[] = {
+       &ir_dev_attr_grp,
+       NULL
+};
+
+static struct device_type ir_dev_type = {
+       .groups         = ir_dev_attr_groups,
+};
+
+
 /**
  * ir_register_class() - creates the sysfs for /sys/class/irrcv/irrcv?
  * @input_dev: the struct input_dev descriptor of the device
@@ -138,7 +160,7 @@ static struct attribute *ir_dev_attrs[] = {
 int ir_register_class(struct input_dev *input_dev)
 {
        int rc;
-       struct kobject *kobj;
+       const char *path;
 
        struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
        int devno = find_first_zero_bit(&ir_core_dev_number,
@@ -147,19 +169,31 @@ int ir_register_class(struct input_dev *input_dev)
        if (unlikely(devno < 0))
                return devno;
 
-       ir_dev->attr.attrs = ir_dev_attrs;
-       ir_dev->class_dev = device_create(ir_input_class, NULL,
-                                         input_dev->dev.devt, ir_dev,
-                                         "irrcv%d", devno);
-       kobj = &ir_dev->class_dev->kobj;
-
-       printk(KERN_WARNING "Creating IR device %s\n", kobject_name(kobj));
-       rc = sysfs_create_group(kobj, &ir_dev->attr);
-       if (unlikely(rc < 0)) {
-               device_destroy(ir_input_class, input_dev->dev.devt);
-               return -ENOMEM;
+       ir_dev->dev.type = &ir_dev_type;
+       ir_dev->dev.class = &ir_input_class;
+       ir_dev->dev.parent = input_dev->dev.parent;
+       dev_set_name(&ir_dev->dev, "irrcv%d", devno);
+       rc = device_register(&ir_dev->dev);
+       if (rc)
+               return rc;
+
+
+       input_dev->dev.parent = &ir_dev->dev;
+       rc = input_register_device(input_dev);
+       if (rc < 0) {
+               device_del(&ir_dev->dev);
+               return rc;
        }
 
+       __module_get(THIS_MODULE);
+
+       path = kobject_get_path(&input_dev->dev.kobj, GFP_KERNEL);
+       printk(KERN_INFO "%s: %s associated with sysfs %s\n",
+               dev_name(&ir_dev->dev),
+               input_dev->name ? input_dev->name : "Unspecified device",
+               path ? path : "N/A");
+       kfree(path);
+
        ir_dev->devno = devno;
        set_bit(devno, &ir_core_dev_number);
 
@@ -176,16 +210,12 @@ int ir_register_class(struct input_dev *input_dev)
 void ir_unregister_class(struct input_dev *input_dev)
 {
        struct ir_input_dev *ir_dev = input_get_drvdata(input_dev);
-       struct kobject *kobj;
 
        clear_bit(ir_dev->devno, &ir_core_dev_number);
+       input_unregister_device(input_dev);
+       device_del(&ir_dev->dev);
 
-       kobj = &ir_dev->class_dev->kobj;
-
-       sysfs_remove_group(kobj, &ir_dev->attr);
-       device_destroy(ir_input_class, input_dev->dev.devt);
-
-       kfree(ir_dev->attr.name);
+       module_put(THIS_MODULE);
 }
 
 /*
@@ -194,10 +224,10 @@ void ir_unregister_class(struct input_dev *input_dev)
 
 static int __init ir_core_init(void)
 {
-       ir_input_class = class_create(THIS_MODULE, "irrcv");
-       if (IS_ERR(ir_input_class)) {
+       int rc = class_register(&ir_input_class);
+       if (rc) {
                printk(KERN_ERR "ir_core: unable to register irrcv class\n");
-               return PTR_ERR(ir_input_class);
+               return rc;
        }
 
        return 0;
@@ -205,7 +235,7 @@ static int __init ir_core_init(void)
 
 static void __exit ir_core_exit(void)
 {
-       class_destroy(ir_input_class);
+       class_unregister(&ir_input_class);
 }
 
 module_init(ir_core_init);

diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index 61c223b..ce9f347 100644 (file)
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -47,11 +47,9 @@ struct ir_dev_props {
 
 
 struct ir_input_dev {
-       struct input_dev                *dev;           /* Input device*/
+       struct device                   dev;            /* device */
        struct ir_scancode_table        rc_tab;         /* scan/key table */
        unsigned long                   devno;          /* device number */
-       struct attribute_group          attr;           /* IR attributes */
-       struct device                   *class_dev;     /* virtual class dev */
        const struct ir_dev_props       *props;         /* Device properties */
 };
 #define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)