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Bluetooth: Add initial sleep support to Three-wire UART 

This patch adds very basic support for the sleep related messages. The
only thing the code does right now is send a wakeup message as soon as
receiving a sleep one, essentially preventing the controller from going
to sleep.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
This commit is contained in:
Johan Hedberg 2012-07-16 16:12:14 +03:00 committed by Gustavo Padovan
parent 255a68e012
commit 10122d07ce
1 changed files with 13 additions and 0 deletions
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13
drivers/bluetooth/hci_h5.c
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@ -74,6 +74,8 @@ struct h5 {
bool tx_ack_req; /* Pending ack to send */
u8 tx_seq; /* Next seq number to send */
u8 tx_ack; /* Next ack number to send */
bool sleeping;
};
static void h5_reset_rx(struct h5 *h5);
@ -211,6 +213,9 @@ static void h5_handle_internal_rx(struct hci_uart *hu)
const unsigned char sync_rsp[] = { 0x02, 0x7d };
const unsigned char conf_req[] = { 0x03, 0xfc, 0x01 };
const unsigned char conf_rsp[] = { 0x04, 0x7b, 0x01 };
const unsigned char wakeup_req[] = { 0x05, 0xfa };
const unsigned char woken_req[] = { 0x06, 0xf9 };
const unsigned char sleep_req[] = { 0x07, 0x78 };
const unsigned char *hdr = h5->rx_skb->data;
const unsigned char *data = &h5->rx_skb->data[4];
@ -233,6 +238,14 @@ static void h5_handle_internal_rx(struct hci_uart *hu)
BT_DBG("Three-wire init sequence complete");
hci_uart_init_ready(hu);
return;
} else if (memcmp(data, sleep_req, 2) == 0) {
BT_DBG("Peer went to sleep");
h5->sleeping = true;
h5_link_control(hu, wakeup_req, 2);
} else if (memcmp(data, woken_req, 2) == 0) {
BT_DBG("Peer woke up");
h5->sleeping = false;
return;
} else {
BT_DBG("Link Control: 0x%02hhx 0x%02hhx", data[0], data[1]);
return;