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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"
void hci_h4p_bc4_parse_fw_event(struct hci_h4p_info *info, struct sk_buff *skb)
{
/* Check if this is fw packet */
if (skb->data[0] != 0xff) {
hci_recv_frame(info->hdev, skb);
return;
}
if (skb->data[11] || skb->data[12]) {
dev_err(info->dev, "Firmware sending command failed\n");
info->fw_error = -EPROTO;
}
kfree_skb(skb);
complete(&info->fw_completion);
}
int hci_h4p_bc4_send_fw(struct hci_h4p_info *info,
struct sk_buff_head *fw_queue)
{
static const u8 nokia_oui[3] = {0x00, 0x19, 0x4F};
struct sk_buff *skb;
unsigned int offset;
int retries, count, i, not_valid;
unsigned long flags;
info->fw_error = 0;
BT_DBG("Sending firmware");
skb = skb_dequeue(fw_queue);
if (!skb)
return -ENOMSG;
/* Check if this is bd_address packet */
if (skb->data[15] == 0x01 && skb->data[16] == 0x00) {
offset = 21;
skb->data[offset + 1] = 0x00;
skb->data[offset + 5] = 0x00;
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 */
memcpy(info->bd_addr, nokia_oui, 3);
get_random_bytes(info->bd_addr + 3, 3);
}
skb->data[offset + 7] = info->bd_addr[0];
skb->data[offset + 6] = info->bd_addr[1];
skb->data[offset + 4] = info->bd_addr[2];
skb->data[offset + 0] = info->bd_addr[3];
skb->data[offset + 3] = info->bd_addr[4];
skb->data[offset + 2] = info->bd_addr[5];
}
for (count = 1; ; count++) {
BT_DBG("Sending firmware command %d", count);
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);
skb = skb_dequeue(fw_queue);
if (!skb)
break;
if (!wait_for_completion_timeout(&info->fw_completion,
msecs_to_jiffies(1000))) {
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;
}
};
/* Wait for chip warm reset */
retries = 100;
while ((!skb_queue_empty(&info->txq) ||
!(hci_h4p_inb(info, UART_LSR) & UART_LSR_TEMT)) &&
retries--) {
msleep(10);
}
if (!retries) {
dev_err(info->dev, "Transmitter not empty\n");
return -ETIMEDOUT;
}
hci_h4p_change_speed(info, BC4_MAX_BAUD_RATE);
if (hci_h4p_wait_for_cts(info, 1, 100)) {
dev_err(info->dev, "cts didn't deassert after final speed\n");
return -ETIMEDOUT;
}
retries = 100;
do {
init_completion(&info->init_completion);
hci_h4p_send_alive_packet(info);
retries--;
} while (!wait_for_completion_timeout(&info->init_completion, 100) &&
retries > 0);
if (!retries) {
dev_err(info->dev, "No alive reply after speed change\n");
return -ETIMEDOUT;
}
return 0;
}
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