diff options
Diffstat (limited to 'drivers/staging/nokia_h4p/nokia_fw-csr.c')
| -rw-r--r-- | drivers/staging/nokia_h4p/nokia_fw-csr.c | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/drivers/staging/nokia_h4p/nokia_fw-csr.c b/drivers/staging/nokia_h4p/nokia_fw-csr.c new file mode 100644 index 000000000000..fe6b704b3d97 --- /dev/null +++ b/drivers/staging/nokia_h4p/nokia_fw-csr.c @@ -0,0 +1,149 @@ +/* + * 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; +} |