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/*
* This file is part of Nokia H4P bluetooth driver
*
* Copyright (C) 2005-2008 Nokia Corporation.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#include <linux/skbuff.h>
#include <linux/delay.h>
#include <linux/serial_reg.h>
#include "hci_h4p.h"
static int hci_h4p_bcm_set_bdaddr(struct hci_h4p_info *info,
struct sk_buff *skb)
{
int i;
static const u8 nokia_oui[3] = {0x00, 0x1f, 0xdf};
int not_valid;
not_valid = 1;
for (i = 0; i < 6; i++) {
if (info->bd_addr[i] != 0x00) {
not_valid = 0;
break;
}
}
if (not_valid) {
dev_info(info->dev, "Valid bluetooth address not found, setting some random\n");
/* When address is not valid, use some random but Nokia MAC */
memcpy(info->bd_addr, nokia_oui, 3);
get_random_bytes(info->bd_addr + 3, 3);
}
for (i = 0; i < 6; i++)
skb->data[9 - i] = info->bd_addr[i];
return 0;
}
void hci_h4p_bcm_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
{
struct sk_buff *fw_skb;
int err;
unsigned long flags;
if (skb->data[5] != 0x00) {
dev_err(info->dev, "Firmware sending command failed 0x%.2x\n",
skb->data[5]);
info->fw_error = -EPROTO;
}
kfree_skb(skb);
fw_skb = skb_dequeue(info->fw_q);
if (fw_skb == NULL || info->fw_error) {
complete(&info->fw_completion);
return;
}
if (fw_skb->data[1] == 0x01 && fw_skb->data[2] == 0xfc &&
fw_skb->len >= 10) {
BT_DBG("Setting bluetooth address");
err = hci_h4p_bcm_set_bdaddr(info, fw_skb);
if (err < 0) {
kfree_skb(fw_skb);
info->fw_error = err;
complete(&info->fw_completion);
return;
}
}
skb_queue_tail(&info->txq, fw_skb);
spin_lock_irqsave(&info->lock, flags);
hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) |
UART_IER_THRI);
spin_unlock_irqrestore(&info->lock, flags);
}
int hci_h4p_bcm_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue)
{
struct sk_buff *skb;
unsigned long flags, time;
info->fw_error = 0;
BT_DBG("Sending firmware");
time = jiffies;
info->fw_q = fw_queue;
skb = skb_dequeue(fw_queue);
if (!skb)
return -ENODATA;
BT_DBG("Sending commands");
/*
* Disable smart-idle as UART TX interrupts
* are not wake-up capable
*/
hci_h4p_smart_idle(info, 0);
/* Check if this is bd_address packet */
init_completion(&info->fw_completion);
skb_queue_tail(&info->txq, skb);
spin_lock_irqsave(&info->lock, flags);
hci_h4p_outb(info, UART_IER, hci_h4p_inb(info, UART_IER) |
UART_IER_THRI);
spin_unlock_irqrestore(&info->lock, flags);
if (!wait_for_completion_timeout(&info->fw_completion,
msecs_to_jiffies(2000))) {
dev_err(info->dev, "No reply to fw command\n");
return -ETIMEDOUT;
}
if (info->fw_error) {
dev_err(info->dev, "FW error\n");
return -EPROTO;
}
BT_DBG("Firmware sent in %d msecs",
jiffies_to_msecs(jiffies-time));
hci_h4p_set_auto_ctsrts(info, 0, UART_EFR_RTS);
hci_h4p_set_rts(info, 0);
hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE);
hci_h4p_set_auto_ctsrts(info, 1, UART_EFR_RTS);
return 0;
}
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