static void mtk_wcn_stp_uart_exit(void)
{
int err;
mtk_wcn_stp_register_if_tx(STP_UART_IF_TX, NULL); // unregister if_tx function
/* Release tty registration of line discipline */
if ((err = tty_unregister_ldisc(N_MTKSTP)))
{
UART_ERR_FUNC("Can't unregister MTK STP line discipline (%d)\n", err);
}
#if (LDISC_RX == LDISC_RX_TASKLET)
tasklet_kill(&g_stp_uart_rx_fifo_tasklet);
stp_uart_fifo_deinit();
#elif (LDISC_RX == LDISC_RX_WORK)
if (g_stp_uart_rx_work) {
cancel_work_sync(g_stp_uart_rx_work);
}
if (g_stp_uart_rx_wq) {
destroy_workqueue(g_stp_uart_rx_wq);
g_stp_uart_rx_wq = NULL;
}
if (g_stp_uart_rx_work) {
vfree(g_stp_uart_rx_work);
g_stp_uart_rx_work = NULL;
}
stp_uart_fifo_deinit();
#endif
return;
}
/* stp_uart_tty_close()
*
* Called when the line discipline is changed to something
* else, the tty is closed, or the tty detects a hangup.
*/
static void stp_uart_tty_close(struct tty_struct *tty)
{
UART_DBG_FUNC("stp_uart_tty_close(): tty %p\n", tty);
mtk_wcn_stp_register_if_tx(STP_UART_IF_TX, NULL);
return;
}
/* stp_uart_tty_open
*
* Called when line discipline changed to HCI_UART.
*
* Arguments:
* tty pointer to tty info structure
* Return Value:
* 0 if success, otherwise error code
*/
static int stp_uart_tty_open(struct tty_struct *tty)
{
UART_DBG_FUNC("stp_uart_tty_opentty: %p\n", tty);
tty->receive_room = 65536;
tty->low_latency = 1;
/* Flush any pending characters in the driver and line discipline. */
/* FIXME: why is this needed. Note don't use ldisc_ref here as the
open path is before the ldisc is referencable */
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,29)
/* definition changed!! */
if (tty->ldisc->ops->flush_buffer) {
tty->ldisc->ops->flush_buffer(tty);
}
#else
if (tty->ldisc.ops->flush_buffer) {
tty->ldisc.ops->flush_buffer(tty);
}
#endif
tty_driver_flush_buffer(tty);
// init_MUTEX(&buf_mtx);
//// spin_lock_init(&buf_lock);
rd_idx = wr_idx = 0;
stp_tty = tty;
mtk_wcn_stp_register_if_tx(STP_UART_IF_TX, mtk_wcn_uart_tx);
return 0;
}
INT32 mtk_wcn_consys_stp_btif_open(VOID)
{
INT32 iRet = -1;
iRet = mtk_wcn_btif_open(BTIF_OWNER_NAME, pBtifRef);
if (iRet) {
WMT_WARN_FUNC("STP open btif fail(%d)\n", iRet);
return -1;
}
WMT_DBG_FUNC("STP open bitf OK\n");
mtk_wcn_stp_register_if_tx(STP_BTIF_IF_TX, (MTK_WCN_STP_IF_TX) mtk_wcn_consys_stp_btif_tx);
return 0;
}
static void __exit mtk_wcn_stp_uart_exit(void)
{
int err;
mtk_wcn_stp_register_if_tx(STP_UART_IF_TX, NULL); // unregister if_tx function
/* Release tty registration of line discipline */
if ((err = tty_unregister_ldisc(N_MTKSTP)))
{
UART_ERR_FUNC("Can't unregister MTK STP line discipline (%d)\n", err);
}
#ifdef LDISC_RX_TASKLET
tasklet_kill(&g_stp_uart_rx_fifo_tasklet);
stp_uart_fifo_deinit();
#endif
return;
}
/* stp_uart_tty_open
*
* Called when line discipline changed to HCI_UART.
*
* Arguments:
* tty pointer to tty info structure
* Return Value:
* 0 if success, otherwise error code
*/
static int stp_uart_tty_open(struct tty_struct *tty)
{
UART_DBG_FUNC("original receive_room(%d) low_latency(%d) in tty(%p)\n",
tty->receive_room, tty->low_latency, tty);
tty->receive_room = 65536;
#if LDISC_LOW_LATENCY
tty->low_latency = 1;
#endif
UART_DBG_FUNC("set receive_room(%d) low_latency(%d) to tty(%p)\n",
tty->receive_room, tty->low_latency, tty);
/* Flush any pending characters in the driver and line discipline. */
/* FIXME: why is this needed. Note don't use ldisc_ref here as the
open path is before the ldisc is referencable */
#if LINUX_VERSION_CODE > KERNEL_VERSION(2,6,29)
/* definition changed!! */
if (tty->ldisc->ops->flush_buffer) {
tty->ldisc->ops->flush_buffer(tty);
}
#else
if (tty->ldisc.ops->flush_buffer) {
tty->ldisc.ops->flush_buffer(tty);
}
#endif
tty_driver_flush_buffer(tty);
stp_uart_fifo_reset();
stp_uart_tty_tx_init();
stp_tty = tty;
/* Register to STP-CORE */
mtk_wcn_stp_register_if_tx(STP_UART_IF_TX, mtk_wcn_uart_tx);
return 0;
}
