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-rw-r--r--extras/recipes-kernel/linux/linux-omap/wl1271/0015-Bluetooth-btwilink-driver.patch463
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diff --git a/extras/recipes-kernel/linux/linux-omap/wl1271/0015-Bluetooth-btwilink-driver.patch b/extras/recipes-kernel/linux/linux-omap/wl1271/0015-Bluetooth-btwilink-driver.patch
new file mode 100644
index 00000000..f45149f3
--- /dev/null
+++ b/extras/recipes-kernel/linux/linux-omap/wl1271/0015-Bluetooth-btwilink-driver.patch
@@ -0,0 +1,463 @@
1From e3948bda11a3a0d938500ffbc7ef43603909cc15 Mon Sep 17 00:00:00 2001
2From: Pavan Savoy <pavan_savoy@ti.com>
3Date: Tue, 4 Jan 2011 10:59:48 +0000
4Subject: [PATCH 15/15] Bluetooth: btwilink driver
5
6-- patch description --
7
8This is the bluetooth protocol driver for the TI WiLink7 chipsets.
9Texas Instrument's WiLink chipsets combine wireless technologies
10like BT, FM, GPS and WLAN onto a single chip.
11
12This Bluetooth driver works on top of the TI_ST shared transport
13line discipline driver which also allows other drivers like
14FM V4L2 and GPS character driver to make use of the same UART interface.
15
16Kconfig and Makefile modifications to enable the Bluetooth
17driver for Texas Instrument's WiLink 7 chipset.
18
19Signed-off-by: Pavan Savoy <pavan_savoy@ti.com>
20---
21 drivers/bluetooth/Kconfig | 10 +
22 drivers/bluetooth/Makefile | 1 +
23 drivers/bluetooth/btwilink.c | 397 ++++++++++++++++++++++++++++++++++++++++++
24 3 files changed, 408 insertions(+), 0 deletions(-)
25 create mode 100644 drivers/bluetooth/btwilink.c
26
27diff --git a/drivers/bluetooth/Kconfig b/drivers/bluetooth/Kconfig
28index 02deef4..8e0de9a 100644
29--- a/drivers/bluetooth/Kconfig
30+++ b/drivers/bluetooth/Kconfig
31@@ -219,4 +219,14 @@ config BT_ATH3K
32 Say Y here to compile support for "Atheros firmware download driver"
33 into the kernel or say M to compile it as module (ath3k).
34
35+config BT_WILINK
36+ tristate "Texas Instruments WiLink7 driver"
37+ depends on TI_ST
38+ help
39+ This enables the Bluetooth driver for Texas Instrument's BT/FM/GPS
40+ combo devices. This makes use of shared transport line discipline
41+ core driver to communicate with the BT core of the combo chip.
42+
43+ Say Y here to compile support for Texas Instrument's WiLink7 driver
44+ into the kernel or say M to compile it as module.
45 endmenu
46diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
47index 71bdf13..f4460f4 100644
48--- a/drivers/bluetooth/Makefile
49+++ b/drivers/bluetooth/Makefile
50@@ -18,6 +18,7 @@ obj-$(CONFIG_BT_HCIBTSDIO) += btsdio.o
51 obj-$(CONFIG_BT_ATH3K) += ath3k.o
52 obj-$(CONFIG_BT_MRVL) += btmrvl.o
53 obj-$(CONFIG_BT_MRVL_SDIO) += btmrvl_sdio.o
54+obj-$(CONFIG_BT_WILINK) += btwilink.o
55
56 btmrvl-y := btmrvl_main.o
57 btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o
58diff --git a/drivers/bluetooth/btwilink.c b/drivers/bluetooth/btwilink.c
59new file mode 100644
60index 0000000..0201aca
61--- /dev/null
62+++ b/drivers/bluetooth/btwilink.c
63@@ -0,0 +1,397 @@
64+/*
65+ * Texas Instrument's Bluetooth Driver For Shared Transport.
66+ *
67+ * Bluetooth Driver acts as interface between HCI core and
68+ * TI Shared Transport Layer.
69+ *
70+ * Copyright (C) 2009-2010 Texas Instruments
71+ * Author: Raja Mani <raja_mani@ti.com>
72+ * Pavan Savoy <pavan_savoy@ti.com>
73+ *
74+ * This program is free software; you can redistribute it and/or modify
75+ * it under the terms of the GNU General Public License version 2 as
76+ * published by the Free Software Foundation.
77+ *
78+ * This program is distributed in the hope that it will be useful,
79+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
80+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
81+ * GNU General Public License for more details.
82+ *
83+ * You should have received a copy of the GNU General Public License
84+ * along with this program; if not, write to the Free Software
85+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
86+ *
87+ */
88+
89+#include <linux/platform_device.h>
90+#include <net/bluetooth/bluetooth.h>
91+#include <net/bluetooth/hci_core.h>
92+
93+#include <linux/ti_wilink_st.h>
94+
95+/* Bluetooth Driver Version */
96+#define VERSION "1.0"
97+
98+/* Number of seconds to wait for registration completion
99+ * when ST returns PENDING status.
100+ */
101+#define BT_REGISTER_TIMEOUT 6000 /* 6 sec */
102+
103+/**
104+ * struct ti_st - driver operation structure
105+ * @hdev: hci device pointer which binds to bt driver
106+ * @reg_status: ST registration callback status
107+ * @st_write: write function provided by the ST driver
108+ * to be used by the driver during send_frame.
109+ * @wait_reg_completion - completion sync between ti_st_open
110+ * and ti_st_registration_completion_cb.
111+ */
112+struct ti_st {
113+ struct hci_dev *hdev;
114+ char reg_status;
115+ long (*st_write) (struct sk_buff *);
116+ struct completion wait_reg_completion;
117+};
118+
119+/* Increments HCI counters based on pocket ID (cmd,acl,sco) */
120+static inline void ti_st_tx_complete(struct ti_st *hst, int pkt_type)
121+{
122+ struct hci_dev *hdev = hst->hdev;
123+
124+ /* Update HCI stat counters */
125+ switch (pkt_type) {
126+ case HCI_COMMAND_PKT:
127+ hdev->stat.cmd_tx++;
128+ break;
129+
130+ case HCI_ACLDATA_PKT:
131+ hdev->stat.acl_tx++;
132+ break;
133+
134+ case HCI_SCODATA_PKT:
135+ hdev->stat.sco_tx++;
136+ break;
137+ }
138+}
139+
140+/* ------- Interfaces to Shared Transport ------ */
141+
142+/* Called by ST layer to indicate protocol registration completion
143+ * status.ti_st_open() function will wait for signal from this
144+ * API when st_register() function returns ST_PENDING.
145+ */
146+static void st_registration_completion_cb(void *priv_data, char data)
147+{
148+ struct ti_st *lhst = priv_data;
149+
150+ /* Save registration status for use in ti_st_open() */
151+ lhst->reg_status = data;
152+ /* complete the wait in ti_st_open() */
153+ complete(&lhst->wait_reg_completion);
154+}
155+
156+/* Called by Shared Transport layer when receive data is
157+ * available */
158+static long st_receive(void *priv_data, struct sk_buff *skb)
159+{
160+ struct ti_st *lhst = priv_data;
161+ int err;
162+
163+ if (!skb)
164+ return -EFAULT;
165+
166+ if (!lhst) {
167+ kfree_skb(skb);
168+ return -EFAULT;
169+ }
170+
171+ skb->dev = (void *) lhst->hdev;
172+
173+ /* Forward skb to HCI core layer */
174+ err = hci_recv_frame(skb);
175+ if (err < 0) {
176+ BT_ERR("Unable to push skb to HCI core(%d)", err);
177+ return err;
178+ }
179+
180+ lhst->hdev->stat.byte_rx += skb->len;
181+
182+ return 0;
183+}
184+
185+/* ------- Interfaces to HCI layer ------ */
186+/* protocol structure registered with shared transport */
187+static struct st_proto_s ti_st_proto[3] = {
188+ {
189+ .chnl_id = 0x02, /* ACL */
190+ .recv = st_receive,
191+ .reg_complete_cb = st_registration_completion_cb,
192+ .hdr_len = 4,
193+ .offset_len_in_hdr = 2,
194+ .len_size = 2,
195+ .reserve = 8,
196+ },
197+ {
198+ .chnl_id = 0x03, /* SCO */
199+ .recv = st_receive,
200+ .reg_complete_cb = st_registration_completion_cb,
201+ .hdr_len = 3,
202+ .offset_len_in_hdr = 2,
203+ .len_size = 1,
204+ .reserve = 8,
205+ },
206+ {
207+ .chnl_id = 0x04, /* HCI Events */
208+ .recv = st_receive,
209+ .reg_complete_cb = st_registration_completion_cb,
210+ .hdr_len = 2,
211+ .offset_len_in_hdr = 1,
212+ .len_size = 1,
213+ .reserve = 8,
214+ },
215+};
216+
217+/* Called from HCI core to initialize the device */
218+static int ti_st_open(struct hci_dev *hdev)
219+{
220+ unsigned long timeleft;
221+ struct ti_st *hst;
222+ int err, i;
223+
224+ BT_DBG("%s %p", hdev->name, hdev);
225+ if (test_and_set_bit(HCI_RUNNING, &hdev->flags)) {
226+ BT_ERR("btwilink already opened");
227+ return -EBUSY;
228+ }
229+
230+ /* provide contexts for callbacks from ST */
231+ hst = hdev->driver_data;
232+
233+ for (i = 0; i < 3; i++) {
234+ ti_st_proto[i].priv_data = hst;
235+ ti_st_proto[i].max_frame_size = HCI_MAX_FRAME_SIZE;
236+
237+ err = st_register(&ti_st_proto[i]);
238+ if (err == -EINPROGRESS) {
239+ /* ST is busy with either protocol
240+ * registration or firmware download.
241+ */
242+ /* Prepare wait-for-completion handler data structures.
243+ */
244+ init_completion(&hst->wait_reg_completion);
245+
246+ /* Reset ST registration callback status flag,
247+ * this value will be updated in
248+ * ti_st_registration_completion_cb()
249+ * function whenever it called from ST driver.
250+ */
251+ hst->reg_status = -EINPROGRESS;
252+
253+ BT_DBG("waiting for registration "
254+ "completion signal from ST");
255+ timeleft = wait_for_completion_timeout
256+ (&hst->wait_reg_completion,
257+ msecs_to_jiffies(BT_REGISTER_TIMEOUT));
258+ if (!timeleft) {
259+ clear_bit(HCI_RUNNING, &hdev->flags);
260+ BT_ERR("Timeout(%d sec),didn't get reg "
261+ "completion signal from ST",
262+ BT_REGISTER_TIMEOUT / 1000);
263+ return -ETIMEDOUT;
264+ }
265+
266+ /* Is ST registration callback
267+ * called with ERROR status? */
268+ if (hst->reg_status != 0) {
269+ clear_bit(HCI_RUNNING, &hdev->flags);
270+ BT_ERR("ST registration completed with invalid "
271+ "status %d", hst->reg_status);
272+ return -EAGAIN;
273+ }
274+ err = 0;
275+ } else if (err != 0) {
276+ clear_bit(HCI_RUNNING, &hdev->flags);
277+ BT_ERR("st_register failed %d", err);
278+ return err;
279+ }
280+ hst->st_write = ti_st_proto[i].write;
281+ if (!hst->st_write) {
282+ BT_ERR("undefined ST write function");
283+ clear_bit(HCI_RUNNING, &hdev->flags);
284+
285+ /* Undo registration with ST */
286+ err = st_unregister(&ti_st_proto[i]);
287+ if (err)
288+ BT_ERR("st_unregister() failed with "
289+ "error %d", err);
290+
291+ hst->st_write = NULL;
292+ /* ti_st_proto.write is filled up by the
293+ * underlying shared transport driver
294+ * upon registration
295+ */
296+ return err;
297+ }
298+ }
299+
300+ return err;
301+}
302+
303+/* Close device */
304+static int ti_st_close(struct hci_dev *hdev)
305+{
306+ int err, i;
307+ struct ti_st *hst = hdev->driver_data;
308+
309+ if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
310+ return 0;
311+
312+ for (i = 0; i < 3; i++) {
313+ /* continue to unregister from transport */
314+ err = st_unregister(&ti_st_proto[i]);
315+ if (err)
316+ BT_ERR("st_unregister() failed with error %d", err);
317+ }
318+
319+ hst->st_write = NULL;
320+
321+ return err;
322+}
323+
324+static int ti_st_send_frame(struct sk_buff *skb)
325+{
326+ struct hci_dev *hdev;
327+ struct ti_st *hst;
328+ long len;
329+
330+ hdev = (struct hci_dev *)skb->dev;
331+
332+ if (!test_bit(HCI_RUNNING, &hdev->flags))
333+ return -EBUSY;
334+
335+ hst = hdev->driver_data;
336+
337+ /* Prepend skb with frame type */
338+ memcpy(skb_push(skb, 1), &bt_cb(skb)->pkt_type, 1);
339+
340+ BT_DBG("%s: type %d len %d", hdev->name, bt_cb(skb)->pkt_type,
341+ skb->len);
342+
343+ /* Insert skb to shared transport layer's transmit queue.
344+ * Freeing skb memory is taken care in shared transport layer,
345+ * so don't free skb memory here.
346+ */
347+ len = hst->st_write(skb);
348+ if (len < 0) {
349+ kfree_skb(skb);
350+ BT_ERR("ST write failed (%ld)", len);
351+ /* Try Again, would only fail if UART has gone bad */
352+ return -EAGAIN;
353+ }
354+
355+ /* ST accepted our skb. So, Go ahead and do rest */
356+ hdev->stat.byte_tx += len;
357+ ti_st_tx_complete(hst, bt_cb(skb)->pkt_type);
358+
359+ return 0;
360+}
361+
362+static void ti_st_destruct(struct hci_dev *hdev)
363+{
364+ BT_DBG("%s", hdev->name);
365+ kfree(hdev->driver_data);
366+}
367+
368+static int bt_ti_probe(struct platform_device *pdev)
369+{
370+ static struct ti_st *hst;
371+ struct hci_dev *hdev;
372+ int err;
373+
374+ hst = kzalloc(sizeof(struct ti_st), GFP_KERNEL);
375+ if (!hst)
376+ return -ENOMEM;
377+
378+ /* Expose "hciX" device to user space */
379+ hdev = hci_alloc_dev();
380+ if (!hdev) {
381+ kfree(hst);
382+ return -ENOMEM;
383+ }
384+
385+ BT_DBG("hdev %p", hdev);
386+
387+ hst->hdev = hdev;
388+ hdev->bus = HCI_UART;
389+ hdev->driver_data = hst;
390+ hdev->open = ti_st_open;
391+ hdev->close = ti_st_close;
392+ hdev->flush = NULL;
393+ hdev->send = ti_st_send_frame;
394+ hdev->destruct = ti_st_destruct;
395+ hdev->owner = THIS_MODULE;
396+
397+ err = hci_register_dev(hdev);
398+ if (err < 0) {
399+ BT_ERR("Can't register HCI device error %d", err);
400+ kfree(hst);
401+ hci_free_dev(hdev);
402+ return err;
403+ }
404+
405+ BT_DBG("HCI device registered (hdev %p)", hdev);
406+
407+ dev_set_drvdata(&pdev->dev, hst);
408+ return err;
409+}
410+
411+static int bt_ti_remove(struct platform_device *pdev)
412+{
413+ struct hci_dev *hdev;
414+ struct ti_st *hst = dev_get_drvdata(&pdev->dev);
415+
416+ if (!hst)
417+ return -EFAULT;
418+
419+ hdev = hst->hdev;
420+ ti_st_close(hdev);
421+ hci_unregister_dev(hdev);
422+
423+ hci_free_dev(hdev);
424+ kfree(hst);
425+
426+ dev_set_drvdata(&pdev->dev, NULL);
427+ return 0;
428+}
429+
430+static struct platform_driver btwilink_driver = {
431+ .probe = bt_ti_probe,
432+ .remove = bt_ti_remove,
433+ .driver = {
434+ .name = "btwilink",
435+ .owner = THIS_MODULE,
436+ },
437+};
438+
439+/* ------- Module Init/Exit interfaces ------ */
440+static int __init btwilink_init(void)
441+{
442+ BT_INFO("Bluetooth Driver for TI WiLink - Version %s", VERSION);
443+
444+ return platform_driver_register(&btwilink_driver);
445+}
446+
447+static void __exit btwilink_exit(void)
448+{
449+ platform_driver_unregister(&btwilink_driver);
450+}
451+
452+module_init(btwilink_init);
453+module_exit(btwilink_exit);
454+
455+/* ------ Module Info ------ */
456+
457+MODULE_AUTHOR("Raja Mani <raja_mani@ti.com>");
458+MODULE_DESCRIPTION("Bluetooth Driver for TI Shared Transport" VERSION);
459+MODULE_VERSION(VERSION);
460+MODULE_LICENSE("GPL");
461--
4621.6.6.1
463
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