From 57f0f512b273f60d52568b8c6b77e17f5636edc0 Mon Sep 17 00:00:00 2001
From: André Fabian Silva Delgado <emulatorman@parabola.nu>
Date: Wed, 5 Aug 2015 17:04:01 -0300
Subject: Initial import

---
 drivers/bluetooth/hci_bcm.c | 153 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 153 insertions(+)
 create mode 100644 drivers/bluetooth/hci_bcm.c

(limited to 'drivers/bluetooth/hci_bcm.c')

diff --git a/drivers/bluetooth/hci_bcm.c b/drivers/bluetooth/hci_bcm.c
new file mode 100644
index 000000000..1ec0b4a5f
--- /dev/null
+++ b/drivers/bluetooth/hci_bcm.c
@@ -0,0 +1,153 @@
+/*
+ *
+ *  Bluetooth HCI UART driver for Broadcom devices
+ *
+ *  Copyright (C) 2015  Intel Corporation
+ *
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/skbuff.h>
+
+#include <net/bluetooth/bluetooth.h>
+#include <net/bluetooth/hci_core.h>
+
+#include "btbcm.h"
+#include "hci_uart.h"
+
+struct bcm_data {
+	struct sk_buff *rx_skb;
+	struct sk_buff_head txq;
+};
+
+static int bcm_open(struct hci_uart *hu)
+{
+	struct bcm_data *bcm;
+
+	BT_DBG("hu %p", hu);
+
+	bcm = kzalloc(sizeof(*bcm), GFP_KERNEL);
+	if (!bcm)
+		return -ENOMEM;
+
+	skb_queue_head_init(&bcm->txq);
+
+	hu->priv = bcm;
+	return 0;
+}
+
+static int bcm_close(struct hci_uart *hu)
+{
+	struct bcm_data *bcm = hu->priv;
+
+	BT_DBG("hu %p", hu);
+
+	skb_queue_purge(&bcm->txq);
+	kfree_skb(bcm->rx_skb);
+	kfree(bcm);
+
+	hu->priv = NULL;
+	return 0;
+}
+
+static int bcm_flush(struct hci_uart *hu)
+{
+	struct bcm_data *bcm = hu->priv;
+
+	BT_DBG("hu %p", hu);
+
+	skb_queue_purge(&bcm->txq);
+
+	return 0;
+}
+
+static int bcm_setup(struct hci_uart *hu)
+{
+	BT_DBG("hu %p", hu);
+
+	hu->hdev->set_bdaddr = btbcm_set_bdaddr;
+
+	return btbcm_setup_patchram(hu->hdev);
+}
+
+static const struct h4_recv_pkt bcm_recv_pkts[] = {
+	{ H4_RECV_ACL,   .recv = hci_recv_frame },
+	{ H4_RECV_SCO,   .recv = hci_recv_frame },
+	{ H4_RECV_EVENT, .recv = hci_recv_frame },
+};
+
+static int bcm_recv(struct hci_uart *hu, const void *data, int count)
+{
+	struct bcm_data *bcm = hu->priv;
+
+	if (!test_bit(HCI_UART_REGISTERED, &hu->flags))
+		return -EUNATCH;
+
+	bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count,
+				  bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts));
+	if (IS_ERR(bcm->rx_skb)) {
+		int err = PTR_ERR(bcm->rx_skb);
+		BT_ERR("%s: Frame reassembly failed (%d)", hu->hdev->name, err);
+		return err;
+	}
+
+	return count;
+}
+
+static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb)
+{
+	struct bcm_data *bcm = hu->priv;
+
+	BT_DBG("hu %p skb %p", hu, skb);
+
+	/* Prepend skb with frame type */
+	memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
+	skb_queue_tail(&bcm->txq, skb);
+
+	return 0;
+}
+
+static struct sk_buff *bcm_dequeue(struct hci_uart *hu)
+{
+	struct bcm_data *bcm = hu->priv;
+
+	return skb_dequeue(&bcm->txq);
+}
+
+static const struct hci_uart_proto bcm_proto = {
+	.id		= HCI_UART_BCM,
+	.name		= "BCM",
+	.open		= bcm_open,
+	.close		= bcm_close,
+	.flush		= bcm_flush,
+	.setup		= bcm_setup,
+	.recv		= bcm_recv,
+	.enqueue	= bcm_enqueue,
+	.dequeue	= bcm_dequeue,
+};
+
+int __init bcm_init(void)
+{
+	return hci_uart_register_proto(&bcm_proto);
+}
+
+int __exit bcm_deinit(void)
+{
+	return hci_uart_unregister_proto(&bcm_proto);
+}
-- 
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