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path: root/drivers/bluetooth/hci_bcsp.c
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Diffstat (limited to 'drivers/bluetooth/hci_bcsp.c')
-rw-r--r--drivers/bluetooth/hci_bcsp.c42
1 files changed, 23 insertions, 19 deletions
diff --git a/drivers/bluetooth/hci_bcsp.c b/drivers/bluetooth/hci_bcsp.c
index 0ee324e1265d..91bd293d7a0a 100644
--- a/drivers/bluetooth/hci_bcsp.c
+++ b/drivers/bluetooth/hci_bcsp.c
@@ -28,7 +28,7 @@
* $Id: hci_bcsp.c,v 1.2 2002/09/26 05:05:14 maxk Exp $
*/
-#define VERSION "0.2"
+#define VERSION "0.3"
#include <linux/config.h>
#include <linux/module.h>
@@ -60,6 +60,7 @@
#define BT_DBG( A... )
#endif
+static int txcrc = 1;
static int hciextn = 1;
/* ---- BCSP CRC calculation ---- */
@@ -173,11 +174,8 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
{
struct sk_buff *nskb;
u8 hdr[4], chan;
- int rel, i;
-
-#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC
u16 BCSP_CRC_INIT(bcsp_txmsg_crc);
-#endif
+ int rel, i;
switch (pkt_type) {
case HCI_ACLDATA_PKT:
@@ -240,9 +238,9 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
BT_DBG("Sending packet with seqno %u", bcsp->msgq_txseq);
bcsp->msgq_txseq = ++(bcsp->msgq_txseq) & 0x07;
}
-#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC
- hdr[0] |= 0x40;
-#endif
+
+ if (bcsp->use_crc)
+ hdr[0] |= 0x40;
hdr[1] = ((len << 4) & 0xff) | chan;
hdr[2] = len >> 4;
@@ -251,25 +249,25 @@ static struct sk_buff *bcsp_prepare_pkt(struct bcsp_struct *bcsp, u8 *data,
/* Put BCSP header */
for (i = 0; i < 4; i++) {
bcsp_slip_one_byte(nskb, hdr[i]);
-#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC
- bcsp_crc_update(&bcsp_txmsg_crc, hdr[i]);
-#endif
+
+ if (bcsp->use_crc)
+ bcsp_crc_update(&bcsp_txmsg_crc, hdr[i]);
}
/* Put payload */
for (i = 0; i < len; i++) {
bcsp_slip_one_byte(nskb, data[i]);
-#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC
- bcsp_crc_update(&bcsp_txmsg_crc, data[i]);
-#endif
+
+ if (bcsp->use_crc)
+ bcsp_crc_update(&bcsp_txmsg_crc, data[i]);
}
-#ifdef CONFIG_BT_HCIUART_BCSP_TXCRC
/* Put CRC */
- bcsp_txmsg_crc = bcsp_crc_reverse(bcsp_txmsg_crc);
- bcsp_slip_one_byte(nskb, (u8) ((bcsp_txmsg_crc >> 8) & 0x00ff));
- bcsp_slip_one_byte(nskb, (u8) (bcsp_txmsg_crc & 0x00ff));
-#endif
+ if (bcsp->use_crc) {
+ bcsp_txmsg_crc = bcsp_crc_reverse(bcsp_txmsg_crc);
+ bcsp_slip_one_byte(nskb, (u8) ((bcsp_txmsg_crc >> 8) & 0x00ff));
+ bcsp_slip_one_byte(nskb, (u8) (bcsp_txmsg_crc & 0x00ff));
+ }
bcsp_slip_msgdelim(nskb);
return nskb;
@@ -698,6 +696,9 @@ static int bcsp_open(struct hci_uart *hu)
bcsp->rx_state = BCSP_W4_PKT_DELIMITER;
+ if (txcrc)
+ bcsp->use_crc = 1;
+
return 0;
}
@@ -743,5 +744,8 @@ int bcsp_deinit(void)
return hci_uart_unregister_proto(&bcsp);
}
+module_param(txcrc, bool, 0644);
+MODULE_PARM_DESC(txcrc, "Transmit CRC with every BCSP packet");
+
module_param(hciextn, bool, 0644);
MODULE_PARM_DESC(hciextn, "Convert HCI Extensions into BCSP packets");