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Bluetooth: hci_h5: Add support for serdev enumerated devices

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Add basic support for serdev enumerated devices, note sine this does
not (yet) declare any of / ACPI ids to bind to atm this is a nop.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
This commit is contained in:
Hans de Goede 2018-08-02 16:57:18 +02:00 committed by Marcel Holtmann
parent 1cc194caaf
commit ce945552fd
1 changed files with 48 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

52
drivers/bluetooth/hci_h5.c
View file

@ -23,6 +23,7 @@
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/serdev.h>
#include <linux/skbuff.h>
#include <net/bluetooth/bluetooth.h>
@ -65,6 +66,9 @@ enum {
};
struct h5 {
/* Must be the first member, hci_serdev.c expects this. */
struct hci_uart serdev_hu;
struct sk_buff_head unack; /* Unack'ed packets queue */
struct sk_buff_head rel; /* Reliable packets queue */
struct sk_buff_head unrel; /* Unreliable packets queue */
@ -193,9 +197,13 @@ static int h5_open(struct hci_uart *hu)
BT_DBG("hu %p", hu);
h5 = kzalloc(sizeof(*h5), GFP_KERNEL);
if (!h5)
return -ENOMEM;
if (hu->serdev) {
h5 = serdev_device_get_drvdata(hu->serdev);
} else {
h5 = kzalloc(sizeof(*h5), GFP_KERNEL);
if (!h5)
return -ENOMEM;
}
hu->priv = h5;
h5->hu = hu;
@ -229,7 +237,8 @@ static int h5_close(struct hci_uart *hu)
skb_queue_purge(&h5->rel);
skb_queue_purge(&h5->unrel);
kfree(h5);
if (!hu->serdev)
kfree(h5);
return 0;
}
@ -750,12 +759,47 @@ static const struct hci_uart_proto h5p = {
.flush = h5_flush,
};
static int h5_serdev_probe(struct serdev_device *serdev)
{
struct device *dev = &serdev->dev;
struct h5 *h5;
h5 = devm_kzalloc(dev, sizeof(*h5), GFP_KERNEL);
if (!h5)
return -ENOMEM;
set_bit(HCI_UART_RESET_ON_INIT, &h5->serdev_hu.flags);
h5->hu = &h5->serdev_hu;
h5->serdev_hu.serdev = serdev;
serdev_device_set_drvdata(serdev, h5);
return hci_uart_register_device(&h5->serdev_hu, &h5p);
}
static void h5_serdev_remove(struct serdev_device *serdev)
{
struct h5 *h5 = serdev_device_get_drvdata(serdev);
hci_uart_unregister_device(&h5->serdev_hu);
}
static struct serdev_device_driver h5_serdev_driver = {
.probe = h5_serdev_probe,
.remove = h5_serdev_remove,
.driver = {
.name = "hci_uart_h5",
},
};
int __init h5_init(void)
{
serdev_device_driver_register(&h5_serdev_driver);
return hci_uart_register_proto(&h5p);
}
int __exit h5_deinit(void)
{
serdev_device_driver_unregister(&h5_serdev_driver);
return hci_uart_unregister_proto(&h5p);
}