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| author | Frederic Danis <frederic.danis@linux.intel.com> | 2015-05-28 11:25:03 +0200 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-06-06 07:30:12 +0200 |
| commit | 7721383f4199bb704c664f009423bc228bbac52e (patch) | |
| tree | 5fec7ceac349e584869bcb5d87a899aef05b56a0 | |
| parent | a8f3b9418ad2dd8f3efee0c08cdd61ac3763e739 (diff) | |
| download | lwn-7721383f4199bb704c664f009423bc228bbac52e.tar.gz lwn-7721383f4199bb704c664f009423bc228bbac52e.zip | |
Bluetooth: hci_uart: Support operational speed during setup
Add initial and operational speeds.
Change to operational speed as soon as possible. If controller
set_baudrate() fails, continue at initial speed.
Signed-off-by: Frederic Danis <frederic.danis@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
| -rw-r--r-- | drivers/bluetooth/hci_ldisc.c | 26 | ||||
| -rw-r--r-- | drivers/bluetooth/hci_uart.h | 4 |
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/bluetooth/hci_ldisc.c b/drivers/bluetooth/hci_ldisc.c index 114015d9eef4..ac87346ce9d7 100644 --- a/drivers/bluetooth/hci_ldisc.c +++ b/drivers/bluetooth/hci_ldisc.c @@ -266,11 +266,37 @@ static int hci_uart_send_frame(struct hci_dev *hdev, struct sk_buff *skb) return 0; } +void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed) +{ + struct tty_struct *tty = hu->tty; + struct ktermios ktermios; + + ktermios = tty->termios; + ktermios.c_cflag &= ~CBAUD; + ktermios.c_cflag |= BOTHER; + tty_termios_encode_baud_rate(&ktermios, speed, speed); + + /* tty_set_termios() return not checked as it is always 0 */ + tty_set_termios(tty, &ktermios); + + BT_DBG("%s: New tty speed: %d", hu->hdev->name, tty->termios.c_ispeed); +} + static int hci_uart_setup(struct hci_dev *hdev) { struct hci_uart *hu = hci_get_drvdata(hdev); struct hci_rp_read_local_version *ver; struct sk_buff *skb; + int err; + + if (hu->proto->init_speed) + hci_uart_set_baudrate(hu, hu->proto->init_speed); + + if (hu->proto->set_baudrate && hu->proto->oper_speed) { + err = hu->proto->set_baudrate(hu, hu->proto->oper_speed); + if (!err) + hci_uart_set_baudrate(hu, hu->proto->oper_speed); + } if (hu->proto->setup) return hu->proto->setup(hu); diff --git a/drivers/bluetooth/hci_uart.h b/drivers/bluetooth/hci_uart.h index 72120a5ba13c..e9f970c25304 100644 --- a/drivers/bluetooth/hci_uart.h +++ b/drivers/bluetooth/hci_uart.h @@ -58,10 +58,13 @@ struct hci_uart; struct hci_uart_proto { unsigned int id; const char *name; + unsigned int init_speed; + unsigned int oper_speed; int (*open)(struct hci_uart *hu); int (*close)(struct hci_uart *hu); int (*flush)(struct hci_uart *hu); int (*setup)(struct hci_uart *hu); + int (*set_baudrate)(struct hci_uart *hu, unsigned int speed); int (*recv)(struct hci_uart *hu, const void *data, int len); int (*enqueue)(struct hci_uart *hu, struct sk_buff *skb); struct sk_buff *(*dequeue)(struct hci_uart *hu); @@ -96,6 +99,7 @@ int hci_uart_register_proto(const struct hci_uart_proto *p); int hci_uart_unregister_proto(const struct hci_uart_proto *p); int hci_uart_tx_wakeup(struct hci_uart *hu); int hci_uart_init_ready(struct hci_uart *hu); +void hci_uart_set_baudrate(struct hci_uart *hu, unsigned int speed); #ifdef CONFIG_BT_HCIUART_H4 int h4_init(void); |