]>
Commit | Line | Data |
---|---|---|
e9a2dd26 MH |
1 | /* |
2 | * | |
3 | * Bluetooth HCI UART driver for Broadcom devices | |
4 | * | |
5 | * Copyright (C) 2015 Intel Corporation | |
6 | * | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
21 | * | |
22 | */ | |
23 | ||
24 | #include <linux/kernel.h> | |
25 | #include <linux/errno.h> | |
26 | #include <linux/skbuff.h> | |
18aeb444 | 27 | #include <linux/firmware.h> |
0395ffc1 FD |
28 | #include <linux/module.h> |
29 | #include <linux/acpi.h> | |
33cd149e LP |
30 | #include <linux/of.h> |
31 | #include <linux/property.h> | |
0395ffc1 FD |
32 | #include <linux/platform_device.h> |
33 | #include <linux/clk.h> | |
34 | #include <linux/gpio/consumer.h> | |
35 | #include <linux/tty.h> | |
6cc4396c | 36 | #include <linux/interrupt.h> |
5cebdfea | 37 | #include <linux/dmi.h> |
e88ab30d | 38 | #include <linux/pm_runtime.h> |
33cd149e | 39 | #include <linux/serdev.h> |
e9a2dd26 MH |
40 | |
41 | #include <net/bluetooth/bluetooth.h> | |
42 | #include <net/bluetooth/hci_core.h> | |
43 | ||
bdd8818e | 44 | #include "btbcm.h" |
e9a2dd26 | 45 | #include "hci_uart.h" |
bdd8818e | 46 | |
01d5e44a MH |
47 | #define BCM_NULL_PKT 0x00 |
48 | #define BCM_NULL_SIZE 0 | |
49 | ||
94c58132 MH |
50 | #define BCM_LM_DIAG_PKT 0x07 |
51 | #define BCM_LM_DIAG_SIZE 63 | |
52 | ||
e88ab30d FD |
53 | #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */ |
54 | ||
8a920568 | 55 | /* device driver resources */ |
0395ffc1 | 56 | struct bcm_device { |
8a920568 HG |
57 | /* Must be the first member, hci_serdev.c expects this. */ |
58 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
59 | struct list_head list; |
60 | ||
c0d3ce58 | 61 | struct device *dev; |
0395ffc1 FD |
62 | |
63 | const char *name; | |
64 | struct gpio_desc *device_wakeup; | |
65 | struct gpio_desc *shutdown; | |
66 | ||
67 | struct clk *clk; | |
68 | bool clk_enabled; | |
ae056908 FD |
69 | |
70 | u32 init_speed; | |
74183a1c | 71 | u32 oper_speed; |
6cc4396c | 72 | int irq; |
227630cc | 73 | bool irq_active_low; |
118612fb | 74 | |
b7a622a2 | 75 | #ifdef CONFIG_PM |
118612fb FD |
76 | struct hci_uart *hu; |
77 | bool is_suspended; /* suspend/resume flag */ | |
78 | #endif | |
0395ffc1 FD |
79 | }; |
80 | ||
33cd149e | 81 | /* generic bcm uart resources */ |
bdd8818e | 82 | struct bcm_data { |
0395ffc1 FD |
83 | struct sk_buff *rx_skb; |
84 | struct sk_buff_head txq; | |
85 | ||
86 | struct bcm_device *dev; | |
bdd8818e MH |
87 | }; |
88 | ||
0395ffc1 | 89 | /* List of BCM BT UART devices */ |
bb3ea16a | 90 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
91 | static LIST_HEAD(bcm_device_list); |
92 | ||
5bffac2b HG |
93 | static int irq_polarity = -1; |
94 | module_param(irq_polarity, int, 0444); | |
95 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
96 | ||
33cd149e LP |
97 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
98 | { | |
99 | if (hu->serdev) | |
100 | serdev_device_set_baudrate(hu->serdev, speed); | |
101 | else | |
102 | hci_uart_set_baudrate(hu, speed); | |
103 | } | |
104 | ||
61b2fc2b FD |
105 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
106 | { | |
107 | struct hci_dev *hdev = hu->hdev; | |
108 | struct sk_buff *skb; | |
109 | struct bcm_update_uart_baud_rate param; | |
110 | ||
111 | if (speed > 3000000) { | |
112 | struct bcm_write_uart_clock_setting clock; | |
113 | ||
114 | clock.type = BCM_UART_CLOCK_48MHZ; | |
115 | ||
65ad07c9 | 116 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
117 | |
118 | /* This Broadcom specific command changes the UART's controller | |
119 | * clock for baud rate > 3000000. | |
120 | */ | |
121 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
122 | if (IS_ERR(skb)) { | |
123 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
124 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
125 | err); | |
61b2fc2b FD |
126 | return err; |
127 | } | |
128 | ||
129 | kfree_skb(skb); | |
130 | } | |
131 | ||
65ad07c9 | 132 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
133 | |
134 | param.zero = cpu_to_le16(0); | |
135 | param.baud_rate = cpu_to_le32(speed); | |
136 | ||
137 | /* This Broadcom specific command changes the UART's controller baud | |
138 | * rate. | |
139 | */ | |
140 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
141 | HCI_INIT_TIMEOUT); | |
142 | if (IS_ERR(skb)) { | |
143 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
144 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
145 | err); | |
61b2fc2b FD |
146 | return err; |
147 | } | |
148 | ||
149 | kfree_skb(skb); | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
917522aa | 154 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
155 | static bool bcm_device_exists(struct bcm_device *device) |
156 | { | |
157 | struct list_head *p; | |
158 | ||
81a19053 | 159 | #ifdef CONFIG_PM |
8a920568 HG |
160 | /* Devices using serdev always exist */ |
161 | if (device && device->hu && device->hu->serdev) | |
162 | return true; | |
81a19053 | 163 | #endif |
8a920568 | 164 | |
0395ffc1 FD |
165 | list_for_each(p, &bcm_device_list) { |
166 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
167 | ||
168 | if (device == dev) | |
169 | return true; | |
170 | } | |
171 | ||
172 | return false; | |
173 | } | |
174 | ||
175 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
176 | { | |
177 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) | |
730ce397 | 178 | clk_prepare_enable(dev->clk); |
0395ffc1 | 179 | |
2af0a709 LP |
180 | gpiod_set_value(dev->shutdown, powered); |
181 | gpiod_set_value(dev->device_wakeup, powered); | |
0395ffc1 FD |
182 | |
183 | if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) | |
730ce397 | 184 | clk_disable_unprepare(dev->clk); |
0395ffc1 FD |
185 | |
186 | dev->clk_enabled = powered; | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
b7a622a2 | 191 | #ifdef CONFIG_PM |
6cc4396c FD |
192 | static irqreturn_t bcm_host_wake(int irq, void *data) |
193 | { | |
194 | struct bcm_device *bdev = data; | |
195 | ||
196 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
197 | ||
c0d3ce58 HG |
198 | pm_runtime_get(bdev->dev); |
199 | pm_runtime_mark_last_busy(bdev->dev); | |
200 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 201 | |
6cc4396c FD |
202 | return IRQ_HANDLED; |
203 | } | |
204 | ||
205 | static int bcm_request_irq(struct bcm_data *bcm) | |
206 | { | |
207 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 208 | int err; |
6cc4396c | 209 | |
6cc4396c FD |
210 | mutex_lock(&bcm_device_lock); |
211 | if (!bcm_device_exists(bdev)) { | |
212 | err = -ENODEV; | |
213 | goto unlock; | |
214 | } | |
215 | ||
98dc77d5 LP |
216 | if (bdev->irq <= 0) { |
217 | err = -EOPNOTSUPP; | |
218 | goto unlock; | |
219 | } | |
6cc4396c | 220 | |
c0d3ce58 | 221 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
222 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
223 | IRQF_TRIGGER_RISING, | |
224 | "host_wake", bdev); | |
98dc77d5 LP |
225 | if (err) |
226 | goto unlock; | |
e88ab30d | 227 | |
c0d3ce58 | 228 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 229 | |
c0d3ce58 | 230 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 231 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
232 | pm_runtime_use_autosuspend(bdev->dev); |
233 | pm_runtime_set_active(bdev->dev); | |
234 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
235 | |
236 | unlock: | |
237 | mutex_unlock(&bcm_device_lock); | |
238 | ||
239 | return err; | |
240 | } | |
241 | ||
242 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
243 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
244 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
245 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
246 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
247 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
248 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 249 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
250 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
251 | /* Irrelevant USB flags */ | |
252 | .usb_auto_sleep = 0, | |
253 | .usb_resume_timeout = 0, | |
254 | .pulsed_host_wake = 0, | |
255 | .break_to_host = 0 | |
256 | }; | |
257 | ||
258 | static int bcm_setup_sleep(struct hci_uart *hu) | |
259 | { | |
260 | struct bcm_data *bcm = hu->priv; | |
261 | struct sk_buff *skb; | |
262 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
263 | ||
227630cc | 264 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
265 | |
266 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
267 | &sleep_params, HCI_INIT_TIMEOUT); | |
268 | if (IS_ERR(skb)) { | |
269 | int err = PTR_ERR(skb); | |
270 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
271 | return err; | |
272 | } | |
273 | kfree_skb(skb); | |
274 | ||
275 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
276 | ||
277 | return 0; | |
278 | } | |
279 | #else | |
280 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
281 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
282 | #endif | |
283 | ||
075e1f5e MH |
284 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
285 | { | |
286 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
287 | struct bcm_data *bcm = hu->priv; | |
288 | struct sk_buff *skb; | |
289 | ||
290 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
291 | return -ENETDOWN; | |
292 | ||
293 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
294 | if (!skb) |
295 | return -ENOMEM; | |
075e1f5e | 296 | |
634fef61 JB |
297 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
298 | skb_put_u8(skb, 0xf0); | |
299 | skb_put_u8(skb, enable); | |
075e1f5e MH |
300 | |
301 | skb_queue_tail(&bcm->txq, skb); | |
302 | hci_uart_tx_wakeup(hu); | |
303 | ||
304 | return 0; | |
305 | } | |
306 | ||
bdd8818e MH |
307 | static int bcm_open(struct hci_uart *hu) |
308 | { | |
309 | struct bcm_data *bcm; | |
0395ffc1 | 310 | struct list_head *p; |
bdd8818e | 311 | |
65ad07c9 | 312 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
313 | |
314 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); | |
315 | if (!bcm) | |
316 | return -ENOMEM; | |
317 | ||
318 | skb_queue_head_init(&bcm->txq); | |
319 | ||
320 | hu->priv = bcm; | |
0395ffc1 | 321 | |
8a920568 HG |
322 | mutex_lock(&bcm_device_lock); |
323 | ||
33cd149e LP |
324 | if (hu->serdev) { |
325 | serdev_device_open(hu->serdev); | |
8a920568 | 326 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
327 | goto out; |
328 | } | |
329 | ||
95065a61 JH |
330 | if (!hu->tty->dev) |
331 | goto out; | |
332 | ||
0395ffc1 FD |
333 | list_for_each(p, &bcm_device_list) { |
334 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
335 | ||
336 | /* Retrieve saved bcm_device based on parent of the | |
337 | * platform device (saved during device probe) and | |
338 | * parent of tty device used by hci_uart | |
339 | */ | |
c0d3ce58 | 340 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 341 | bcm->dev = dev; |
b7a622a2 | 342 | #ifdef CONFIG_PM |
118612fb FD |
343 | dev->hu = hu; |
344 | #endif | |
0395ffc1 FD |
345 | break; |
346 | } | |
347 | } | |
348 | ||
95065a61 | 349 | out: |
8a920568 HG |
350 | if (bcm->dev) { |
351 | hu->init_speed = bcm->dev->init_speed; | |
352 | hu->oper_speed = bcm->dev->oper_speed; | |
353 | bcm_gpio_set_power(bcm->dev, true); | |
354 | } | |
355 | ||
356 | mutex_unlock(&bcm_device_lock); | |
bdd8818e MH |
357 | return 0; |
358 | } | |
359 | ||
360 | static int bcm_close(struct hci_uart *hu) | |
361 | { | |
362 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 363 | struct bcm_device *bdev = NULL; |
bdd8818e | 364 | |
65ad07c9 | 365 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 366 | |
0395ffc1 | 367 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 368 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
369 | |
370 | if (hu->serdev) { | |
371 | serdev_device_close(hu->serdev); | |
372 | bdev = serdev_device_get_drvdata(hu->serdev); | |
373 | } else if (bcm_device_exists(bcm->dev)) { | |
374 | bdev = bcm->dev; | |
375 | #ifdef CONFIG_PM | |
376 | bdev->hu = NULL; | |
377 | #endif | |
378 | } | |
379 | ||
380 | if (bdev) { | |
6cc4396c | 381 | bcm_gpio_set_power(bdev, false); |
b7a622a2 | 382 | #ifdef CONFIG_PM |
c0d3ce58 HG |
383 | pm_runtime_disable(bdev->dev); |
384 | pm_runtime_set_suspended(bdev->dev); | |
e88ab30d | 385 | |
514a00bf | 386 | if (bdev->irq > 0) { |
c0d3ce58 HG |
387 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
388 | device_init_wakeup(bdev->dev, false); | |
6cc4396c | 389 | } |
118612fb FD |
390 | #endif |
391 | } | |
bb3ea16a | 392 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 393 | |
bdd8818e MH |
394 | skb_queue_purge(&bcm->txq); |
395 | kfree_skb(bcm->rx_skb); | |
396 | kfree(bcm); | |
397 | ||
398 | hu->priv = NULL; | |
399 | return 0; | |
400 | } | |
401 | ||
402 | static int bcm_flush(struct hci_uart *hu) | |
403 | { | |
404 | struct bcm_data *bcm = hu->priv; | |
405 | ||
65ad07c9 | 406 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
407 | |
408 | skb_queue_purge(&bcm->txq); | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
413 | static int bcm_setup(struct hci_uart *hu) | |
414 | { | |
6cc4396c | 415 | struct bcm_data *bcm = hu->priv; |
6be09b48 FD |
416 | char fw_name[64]; |
417 | const struct firmware *fw; | |
960ef1d7 | 418 | unsigned int speed; |
6be09b48 FD |
419 | int err; |
420 | ||
65ad07c9 | 421 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 422 | |
075e1f5e | 423 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
424 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
425 | ||
6be09b48 FD |
426 | err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name)); |
427 | if (err) | |
428 | return err; | |
429 | ||
430 | err = request_firmware(&fw, fw_name, &hu->hdev->dev); | |
431 | if (err < 0) { | |
65ad07c9 | 432 | bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name); |
6be09b48 FD |
433 | return 0; |
434 | } | |
435 | ||
436 | err = btbcm_patchram(hu->hdev, fw); | |
437 | if (err) { | |
65ad07c9 | 438 | bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err); |
6be09b48 FD |
439 | goto finalize; |
440 | } | |
441 | ||
960ef1d7 FD |
442 | /* Init speed if any */ |
443 | if (hu->init_speed) | |
444 | speed = hu->init_speed; | |
445 | else if (hu->proto->init_speed) | |
446 | speed = hu->proto->init_speed; | |
447 | else | |
448 | speed = 0; | |
449 | ||
450 | if (speed) | |
33cd149e | 451 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
452 | |
453 | /* Operational speed if any */ | |
454 | if (hu->oper_speed) | |
455 | speed = hu->oper_speed; | |
456 | else if (hu->proto->oper_speed) | |
457 | speed = hu->proto->oper_speed; | |
458 | else | |
459 | speed = 0; | |
460 | ||
461 | if (speed) { | |
462 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 463 | if (!err) |
33cd149e | 464 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
465 | } |
466 | ||
6be09b48 FD |
467 | finalize: |
468 | release_firmware(fw); | |
469 | ||
470 | err = btbcm_finalize(hu->hdev); | |
6cc4396c FD |
471 | if (err) |
472 | return err; | |
473 | ||
cdd24a20 | 474 | if (!bcm_request_irq(bcm)) |
6cc4396c | 475 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
476 | |
477 | return err; | |
bdd8818e MH |
478 | } |
479 | ||
94c58132 MH |
480 | #define BCM_RECV_LM_DIAG \ |
481 | .type = BCM_LM_DIAG_PKT, \ | |
482 | .hlen = BCM_LM_DIAG_SIZE, \ | |
483 | .loff = 0, \ | |
484 | .lsize = 0, \ | |
485 | .maxlen = BCM_LM_DIAG_SIZE | |
486 | ||
01d5e44a MH |
487 | #define BCM_RECV_NULL \ |
488 | .type = BCM_NULL_PKT, \ | |
489 | .hlen = BCM_NULL_SIZE, \ | |
490 | .loff = 0, \ | |
491 | .lsize = 0, \ | |
492 | .maxlen = BCM_NULL_SIZE | |
493 | ||
79b8df93 | 494 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
495 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
496 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
497 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
498 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, | |
01d5e44a | 499 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
79b8df93 MH |
500 | }; |
501 | ||
bdd8818e MH |
502 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
503 | { | |
504 | struct bcm_data *bcm = hu->priv; | |
505 | ||
506 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
507 | return -EUNATCH; | |
508 | ||
79b8df93 MH |
509 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
510 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
511 | if (IS_ERR(bcm->rx_skb)) { |
512 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 513 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 514 | bcm->rx_skb = NULL; |
bdd8818e | 515 | return err; |
e88ab30d FD |
516 | } else if (!bcm->rx_skb) { |
517 | /* Delay auto-suspend when receiving completed packet */ | |
518 | mutex_lock(&bcm_device_lock); | |
519 | if (bcm->dev && bcm_device_exists(bcm->dev)) { | |
c0d3ce58 HG |
520 | pm_runtime_get(bcm->dev->dev); |
521 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
522 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
e88ab30d FD |
523 | } |
524 | mutex_unlock(&bcm_device_lock); | |
bdd8818e MH |
525 | } |
526 | ||
527 | return count; | |
528 | } | |
529 | ||
530 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
531 | { | |
532 | struct bcm_data *bcm = hu->priv; | |
533 | ||
65ad07c9 | 534 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
535 | |
536 | /* Prepend skb with frame type */ | |
618e8bc2 | 537 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
538 | skb_queue_tail(&bcm->txq, skb); |
539 | ||
540 | return 0; | |
541 | } | |
542 | ||
543 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
544 | { | |
545 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
546 | struct sk_buff *skb = NULL; |
547 | struct bcm_device *bdev = NULL; | |
548 | ||
549 | mutex_lock(&bcm_device_lock); | |
550 | ||
551 | if (bcm_device_exists(bcm->dev)) { | |
552 | bdev = bcm->dev; | |
c0d3ce58 | 553 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
554 | /* Shall be resumed here */ |
555 | } | |
556 | ||
557 | skb = skb_dequeue(&bcm->txq); | |
558 | ||
559 | if (bdev) { | |
c0d3ce58 HG |
560 | pm_runtime_mark_last_busy(bdev->dev); |
561 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 562 | } |
bdd8818e | 563 | |
e88ab30d FD |
564 | mutex_unlock(&bcm_device_lock); |
565 | ||
566 | return skb; | |
bdd8818e MH |
567 | } |
568 | ||
b7a622a2 FD |
569 | #ifdef CONFIG_PM |
570 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 571 | { |
78277d73 | 572 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 573 | |
b7a622a2 | 574 | bt_dev_dbg(bdev, ""); |
917522aa | 575 | |
b7a622a2 | 576 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
577 | hci_uart_set_flow_control(bdev->hu, true); |
578 | ||
b7a622a2 | 579 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
580 | bdev->is_suspended = true; |
581 | } | |
582 | ||
583 | /* Suspend the device */ | |
c926558a LW |
584 | gpiod_set_value(bdev->device_wakeup, false); |
585 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); | |
586 | mdelay(15); | |
118612fb | 587 | |
b7a622a2 FD |
588 | return 0; |
589 | } | |
590 | ||
591 | static int bcm_resume_device(struct device *dev) | |
592 | { | |
78277d73 | 593 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
594 | |
595 | bt_dev_dbg(bdev, ""); | |
596 | ||
c926558a LW |
597 | gpiod_set_value(bdev->device_wakeup, true); |
598 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); | |
599 | mdelay(15); | |
b7a622a2 FD |
600 | |
601 | /* When this executes, the device has woken up already */ | |
602 | if (bdev->is_suspended && bdev->hu) { | |
603 | bdev->is_suspended = false; | |
604 | ||
605 | hci_uart_set_flow_control(bdev->hu, false); | |
606 | } | |
607 | ||
608 | return 0; | |
609 | } | |
610 | #endif | |
611 | ||
612 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 613 | /* suspend callback */ |
b7a622a2 FD |
614 | static int bcm_suspend(struct device *dev) |
615 | { | |
78277d73 | 616 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
617 | int error; |
618 | ||
619 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
620 | ||
8a920568 HG |
621 | /* |
622 | * When used with a device instantiated as platform_device, bcm_suspend | |
623 | * can be called at any time as long as the platform device is bound, | |
624 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
625 | * and device_wake-up GPIO. |
626 | */ | |
627 | mutex_lock(&bcm_device_lock); | |
628 | ||
629 | if (!bdev->hu) | |
630 | goto unlock; | |
631 | ||
e88ab30d FD |
632 | if (pm_runtime_active(dev)) |
633 | bcm_suspend_device(dev); | |
b7a622a2 | 634 | |
514a00bf | 635 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
636 | error = enable_irq_wake(bdev->irq); |
637 | if (!error) | |
638 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
639 | } | |
640 | ||
917522aa | 641 | unlock: |
bb3ea16a | 642 | mutex_unlock(&bcm_device_lock); |
917522aa | 643 | |
118612fb FD |
644 | return 0; |
645 | } | |
646 | ||
8a920568 | 647 | /* resume callback */ |
118612fb FD |
648 | static int bcm_resume(struct device *dev) |
649 | { | |
78277d73 | 650 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 651 | |
65ad07c9 | 652 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 653 | |
8a920568 HG |
654 | /* |
655 | * When used with a device instantiated as platform_device, bcm_resume | |
656 | * can be called at any time as long as platform device is bound, | |
657 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
658 | * and device_wake-up GPIO. |
659 | */ | |
bb3ea16a | 660 | mutex_lock(&bcm_device_lock); |
917522aa FD |
661 | |
662 | if (!bdev->hu) | |
663 | goto unlock; | |
664 | ||
514a00bf | 665 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
666 | disable_irq_wake(bdev->irq); |
667 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
668 | } | |
669 | ||
b7a622a2 | 670 | bcm_resume_device(dev); |
118612fb | 671 | |
917522aa | 672 | unlock: |
bb3ea16a | 673 | mutex_unlock(&bcm_device_lock); |
917522aa | 674 | |
e88ab30d FD |
675 | pm_runtime_disable(dev); |
676 | pm_runtime_set_active(dev); | |
677 | pm_runtime_enable(dev); | |
678 | ||
118612fb FD |
679 | return 0; |
680 | } | |
681 | #endif | |
682 | ||
89ab37b4 DD |
683 | static const struct acpi_gpio_params int_last_device_wakeup_gpios = { 0, 0, false }; |
684 | static const struct acpi_gpio_params int_last_shutdown_gpios = { 1, 0, false }; | |
685 | static const struct acpi_gpio_params int_last_host_wakeup_gpios = { 2, 0, false }; | |
686 | ||
687 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
688 | { "device-wakeup-gpios", &int_last_device_wakeup_gpios, 1 }, | |
689 | { "shutdown-gpios", &int_last_shutdown_gpios, 1 }, | |
690 | { "host-wakeup-gpios", &int_last_host_wakeup_gpios, 1 }, | |
691 | { }, | |
692 | }; | |
693 | ||
694 | static const struct acpi_gpio_params int_first_host_wakeup_gpios = { 0, 0, false }; | |
695 | static const struct acpi_gpio_params int_first_device_wakeup_gpios = { 1, 0, false }; | |
696 | static const struct acpi_gpio_params int_first_shutdown_gpios = { 2, 0, false }; | |
697 | ||
698 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { | |
699 | { "device-wakeup-gpios", &int_first_device_wakeup_gpios, 1 }, | |
700 | { "shutdown-gpios", &int_first_shutdown_gpios, 1 }, | |
701 | { "host-wakeup-gpios", &int_first_host_wakeup_gpios, 1 }, | |
0395ffc1 FD |
702 | { }, |
703 | }; | |
704 | ||
50d78bcf | 705 | #ifdef CONFIG_ACPI |
5cebdfea | 706 | /* IRQ polarity of some chipsets are not defined correctly in ACPI table. */ |
227630cc | 707 | static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = { |
5e2bd93b JB |
708 | { /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */ |
709 | .ident = "Lenovo ThinkPad 8", | |
710 | .matches = { | |
711 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
712 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"), | |
713 | }, | |
5e2bd93b | 714 | }, |
1bdb68b2 IM |
715 | { |
716 | .ident = "MINIX Z83-4", | |
717 | .matches = { | |
718 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MINIX"), | |
719 | DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), | |
720 | }, | |
721 | }, | |
5cebdfea FD |
722 | { } |
723 | }; | |
724 | ||
ae056908 FD |
725 | static int bcm_resource(struct acpi_resource *ares, void *data) |
726 | { | |
727 | struct bcm_device *dev = data; | |
6cc4396c FD |
728 | struct acpi_resource_extended_irq *irq; |
729 | struct acpi_resource_gpio *gpio; | |
730 | struct acpi_resource_uart_serialbus *sb; | |
731 | ||
732 | switch (ares->type) { | |
733 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
734 | irq = &ares->data.extended_irq; | |
09d86354 HG |
735 | if (irq->polarity != ACPI_ACTIVE_LOW) |
736 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
737 | dev->irq_active_low = true; | |
6cc4396c FD |
738 | break; |
739 | ||
740 | case ACPI_RESOURCE_TYPE_GPIO: | |
741 | gpio = &ares->data.gpio; | |
742 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) | |
227630cc | 743 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
6cc4396c FD |
744 | break; |
745 | ||
746 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 747 | sb = &ares->data.uart_serial_bus; |
74183a1c | 748 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 749 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
750 | dev->oper_speed = 4000000; |
751 | } | |
6cc4396c FD |
752 | break; |
753 | ||
754 | default: | |
755 | break; | |
ae056908 FD |
756 | } |
757 | ||
9d54fd6a | 758 | return 0; |
ae056908 | 759 | } |
212d7183 | 760 | #endif /* CONFIG_ACPI */ |
ae056908 | 761 | |
42ef18f0 | 762 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 763 | { |
c0d3ce58 | 764 | dev->name = dev_name(dev->dev); |
0395ffc1 | 765 | |
c0d3ce58 | 766 | dev->clk = devm_clk_get(dev->dev, NULL); |
89ab37b4 | 767 | |
aee67da6 SW |
768 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
769 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
770 | if (IS_ERR(dev->device_wakeup)) |
771 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 772 | |
aee67da6 SW |
773 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
774 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
775 | if (IS_ERR(dev->shutdown)) |
776 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 777 | |
6cc4396c | 778 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
779 | if (dev->irq <= 0) { |
780 | struct gpio_desc *gpio; | |
781 | ||
c0d3ce58 | 782 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
783 | GPIOD_IN); |
784 | if (IS_ERR(gpio)) | |
785 | return PTR_ERR(gpio); | |
786 | ||
787 | dev->irq = gpiod_to_irq(gpio); | |
788 | } | |
789 | ||
c0d3ce58 | 790 | dev_info(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
791 | return 0; |
792 | } | |
793 | ||
794 | #ifdef CONFIG_ACPI | |
795 | static int bcm_acpi_probe(struct bcm_device *dev) | |
796 | { | |
212d7183 AS |
797 | LIST_HEAD(resources); |
798 | const struct dmi_system_id *dmi_id; | |
799 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; | |
800 | const struct acpi_device_id *id; | |
9d54fd6a | 801 | struct resource_entry *entry; |
212d7183 AS |
802 | int ret; |
803 | ||
804 | /* Retrieve GPIO data */ | |
c0d3ce58 | 805 | id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev); |
212d7183 AS |
806 | if (id) |
807 | gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data; | |
808 | ||
c0d3ce58 | 809 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); |
212d7183 AS |
810 | if (ret) |
811 | return ret; | |
812 | ||
ae056908 | 813 | /* Retrieve UART ACPI info */ |
c0d3ce58 | 814 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 815 | &resources, bcm_resource, dev); |
5be00284 JN |
816 | if (ret < 0) |
817 | return ret; | |
9d54fd6a HG |
818 | |
819 | resource_list_for_each_entry(entry, &resources) { | |
820 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
821 | dev->irq = entry->res->start; | |
822 | break; | |
823 | } | |
824 | } | |
09dbf1b7 | 825 | acpi_dev_free_resource_list(&resources); |
ae056908 | 826 | |
5bffac2b HG |
827 | if (irq_polarity != -1) { |
828 | dev->irq_active_low = irq_polarity; | |
829 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
830 | dev->irq_active_low ? "low" : "high"); | |
831 | } else { | |
832 | dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table); | |
833 | if (dmi_id) { | |
834 | dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low", | |
835 | dmi_id->ident); | |
836 | dev->irq_active_low = true; | |
837 | } | |
5cebdfea FD |
838 | } |
839 | ||
0395ffc1 FD |
840 | return 0; |
841 | } | |
50d78bcf FD |
842 | #else |
843 | static int bcm_acpi_probe(struct bcm_device *dev) | |
844 | { | |
845 | return -EINVAL; | |
846 | } | |
847 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 848 | |
8a920568 HG |
849 | static int bcm_of_probe(struct bcm_device *bdev) |
850 | { | |
851 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
852 | return 0; | |
853 | } | |
854 | ||
0395ffc1 FD |
855 | static int bcm_probe(struct platform_device *pdev) |
856 | { | |
857 | struct bcm_device *dev; | |
0395ffc1 FD |
858 | int ret; |
859 | ||
860 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
861 | if (!dev) | |
862 | return -ENOMEM; | |
863 | ||
c0d3ce58 | 864 | dev->dev = &pdev->dev; |
4a56f891 | 865 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 866 | |
201762e2 | 867 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 868 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
869 | if (ret) |
870 | return ret; | |
871 | } | |
872 | ||
42ef18f0 | 873 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
874 | if (ret) |
875 | return ret; | |
0395ffc1 FD |
876 | |
877 | platform_set_drvdata(pdev, dev); | |
878 | ||
879 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
880 | ||
881 | /* Place this instance on the device list */ | |
bb3ea16a | 882 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 883 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 884 | mutex_unlock(&bcm_device_lock); |
0395ffc1 FD |
885 | |
886 | bcm_gpio_set_power(dev, false); | |
887 | ||
888 | return 0; | |
889 | } | |
890 | ||
891 | static int bcm_remove(struct platform_device *pdev) | |
892 | { | |
893 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
894 | ||
bb3ea16a | 895 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 896 | list_del(&dev->list); |
bb3ea16a | 897 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 898 | |
0395ffc1 FD |
899 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
900 | ||
901 | return 0; | |
902 | } | |
903 | ||
bdd8818e MH |
904 | static const struct hci_uart_proto bcm_proto = { |
905 | .id = HCI_UART_BCM, | |
143f0a28 | 906 | .name = "Broadcom", |
aee61f7a | 907 | .manufacturer = 15, |
61b2fc2b | 908 | .init_speed = 115200, |
bdd8818e MH |
909 | .open = bcm_open, |
910 | .close = bcm_close, | |
911 | .flush = bcm_flush, | |
912 | .setup = bcm_setup, | |
61b2fc2b | 913 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
914 | .recv = bcm_recv, |
915 | .enqueue = bcm_enqueue, | |
916 | .dequeue = bcm_dequeue, | |
917 | }; | |
918 | ||
0395ffc1 FD |
919 | #ifdef CONFIG_ACPI |
920 | static const struct acpi_device_id bcm_acpi_match[] = { | |
89ab37b4 DD |
921 | { "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
922 | { "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
923 | { "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
924 | { "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
925 | { "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
926 | { "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
927 | { "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
928 | { "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
929 | { "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
930 | { "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
931 | { "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
932 | { "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
933 | { "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
934 | { "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
61d220a6 | 935 | { "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
89ab37b4 DD |
936 | { "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
937 | { "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, | |
1bdb68b2 | 938 | { "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
0395ffc1 FD |
939 | { }, |
940 | }; | |
941 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
942 | #endif | |
943 | ||
8a920568 | 944 | /* suspend and resume callbacks */ |
e88ab30d FD |
945 | static const struct dev_pm_ops bcm_pm_ops = { |
946 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
947 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
948 | }; | |
118612fb | 949 | |
0395ffc1 FD |
950 | static struct platform_driver bcm_driver = { |
951 | .probe = bcm_probe, | |
952 | .remove = bcm_remove, | |
953 | .driver = { | |
954 | .name = "hci_bcm", | |
955 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 956 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
957 | }, |
958 | }; | |
959 | ||
33cd149e LP |
960 | static int bcm_serdev_probe(struct serdev_device *serdev) |
961 | { | |
8a920568 | 962 | struct bcm_device *bcmdev; |
33cd149e LP |
963 | int err; |
964 | ||
965 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
966 | if (!bcmdev) | |
967 | return -ENOMEM; | |
968 | ||
8a920568 | 969 | bcmdev->dev = &serdev->dev; |
81a19053 | 970 | #ifdef CONFIG_PM |
8a920568 | 971 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 972 | #endif |
8a920568 | 973 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
974 | serdev_device_set_drvdata(serdev, bcmdev); |
975 | ||
8a920568 HG |
976 | if (has_acpi_companion(&serdev->dev)) |
977 | err = bcm_acpi_probe(bcmdev); | |
978 | else | |
979 | err = bcm_of_probe(bcmdev); | |
980 | if (err) | |
981 | return err; | |
33cd149e | 982 | |
8a920568 HG |
983 | err = bcm_get_resources(bcmdev); |
984 | if (err) | |
985 | return err; | |
986 | ||
987 | bcm_gpio_set_power(bcmdev, false); | |
988 | ||
989 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); | |
33cd149e LP |
990 | } |
991 | ||
992 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
993 | { | |
8a920568 | 994 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 995 | |
8a920568 | 996 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
997 | } |
998 | ||
999 | #ifdef CONFIG_OF | |
1000 | static const struct of_device_id bcm_bluetooth_of_match[] = { | |
1001 | { .compatible = "brcm,bcm43438-bt" }, | |
1002 | { }, | |
1003 | }; | |
1004 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1005 | #endif | |
1006 | ||
1007 | static struct serdev_device_driver bcm_serdev_driver = { | |
1008 | .probe = bcm_serdev_probe, | |
1009 | .remove = bcm_serdev_remove, | |
1010 | .driver = { | |
1011 | .name = "hci_uart_bcm", | |
1012 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1013 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1014 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1015 | }, |
1016 | }; | |
1017 | ||
bdd8818e MH |
1018 | int __init bcm_init(void) |
1019 | { | |
33cd149e LP |
1020 | /* For now, we need to keep both platform device |
1021 | * driver (ACPI generated) and serdev driver (DT). | |
1022 | */ | |
0395ffc1 | 1023 | platform_driver_register(&bcm_driver); |
33cd149e | 1024 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1025 | |
bdd8818e MH |
1026 | return hci_uart_register_proto(&bcm_proto); |
1027 | } | |
1028 | ||
1029 | int __exit bcm_deinit(void) | |
1030 | { | |
0395ffc1 | 1031 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1032 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1033 | |
bdd8818e MH |
1034 | return hci_uart_unregister_proto(&bcm_proto); |
1035 | } |