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Commit 10122d07 authored by Johan Hedberg's avatar Johan Hedberg Committed by Gustavo Padovan
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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: default avatarJohan Hedberg <johan.hedberg@intel.com>
Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
parent 255a68e0

drivers/bluetooth/hci_h5.c

+13 −0
Original line number Diff line number Diff line
@@ -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;