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Commit | Line | Data |
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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 | ||
54f2b063 JB |
53 | #define BCM_TYPE49_PKT 0x31 |
54 | #define BCM_TYPE49_SIZE 0 | |
55 | ||
56 | #define BCM_TYPE52_PKT 0x34 | |
57 | #define BCM_TYPE52_SIZE 0 | |
58 | ||
e88ab30d FD |
59 | #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */ |
60 | ||
8a920568 | 61 | /* device driver resources */ |
0395ffc1 | 62 | struct bcm_device { |
8a920568 HG |
63 | /* Must be the first member, hci_serdev.c expects this. */ |
64 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
65 | struct list_head list; |
66 | ||
c0d3ce58 | 67 | struct device *dev; |
0395ffc1 FD |
68 | |
69 | const char *name; | |
70 | struct gpio_desc *device_wakeup; | |
71 | struct gpio_desc *shutdown; | |
72 | ||
73 | struct clk *clk; | |
74 | bool clk_enabled; | |
ae056908 FD |
75 | |
76 | u32 init_speed; | |
74183a1c | 77 | u32 oper_speed; |
6cc4396c | 78 | int irq; |
227630cc | 79 | bool irq_active_low; |
118612fb | 80 | |
b7a622a2 | 81 | #ifdef CONFIG_PM |
118612fb FD |
82 | struct hci_uart *hu; |
83 | bool is_suspended; /* suspend/resume flag */ | |
84 | #endif | |
0395ffc1 FD |
85 | }; |
86 | ||
33cd149e | 87 | /* generic bcm uart resources */ |
bdd8818e | 88 | struct bcm_data { |
0395ffc1 FD |
89 | struct sk_buff *rx_skb; |
90 | struct sk_buff_head txq; | |
91 | ||
92 | struct bcm_device *dev; | |
bdd8818e MH |
93 | }; |
94 | ||
0395ffc1 | 95 | /* List of BCM BT UART devices */ |
bb3ea16a | 96 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
97 | static LIST_HEAD(bcm_device_list); |
98 | ||
5bffac2b HG |
99 | static int irq_polarity = -1; |
100 | module_param(irq_polarity, int, 0444); | |
101 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
102 | ||
33cd149e LP |
103 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
104 | { | |
105 | if (hu->serdev) | |
106 | serdev_device_set_baudrate(hu->serdev, speed); | |
107 | else | |
108 | hci_uart_set_baudrate(hu, speed); | |
109 | } | |
110 | ||
61b2fc2b FD |
111 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
112 | { | |
113 | struct hci_dev *hdev = hu->hdev; | |
114 | struct sk_buff *skb; | |
115 | struct bcm_update_uart_baud_rate param; | |
116 | ||
117 | if (speed > 3000000) { | |
118 | struct bcm_write_uart_clock_setting clock; | |
119 | ||
120 | clock.type = BCM_UART_CLOCK_48MHZ; | |
121 | ||
65ad07c9 | 122 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
123 | |
124 | /* This Broadcom specific command changes the UART's controller | |
125 | * clock for baud rate > 3000000. | |
126 | */ | |
127 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
128 | if (IS_ERR(skb)) { | |
129 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
130 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
131 | err); | |
61b2fc2b FD |
132 | return err; |
133 | } | |
134 | ||
135 | kfree_skb(skb); | |
136 | } | |
137 | ||
65ad07c9 | 138 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
139 | |
140 | param.zero = cpu_to_le16(0); | |
141 | param.baud_rate = cpu_to_le32(speed); | |
142 | ||
143 | /* This Broadcom specific command changes the UART's controller baud | |
144 | * rate. | |
145 | */ | |
146 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
147 | HCI_INIT_TIMEOUT); | |
148 | if (IS_ERR(skb)) { | |
149 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
150 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
151 | err); | |
61b2fc2b FD |
152 | return err; |
153 | } | |
154 | ||
155 | kfree_skb(skb); | |
156 | ||
157 | return 0; | |
158 | } | |
159 | ||
917522aa | 160 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
161 | static bool bcm_device_exists(struct bcm_device *device) |
162 | { | |
163 | struct list_head *p; | |
164 | ||
81a19053 | 165 | #ifdef CONFIG_PM |
8a920568 HG |
166 | /* Devices using serdev always exist */ |
167 | if (device && device->hu && device->hu->serdev) | |
168 | return true; | |
81a19053 | 169 | #endif |
8a920568 | 170 | |
0395ffc1 FD |
171 | list_for_each(p, &bcm_device_list) { |
172 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
173 | ||
174 | if (device == dev) | |
175 | return true; | |
176 | } | |
177 | ||
178 | return false; | |
179 | } | |
180 | ||
181 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
182 | { | |
183 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) | |
730ce397 | 184 | clk_prepare_enable(dev->clk); |
0395ffc1 | 185 | |
2af0a709 LP |
186 | gpiod_set_value(dev->shutdown, powered); |
187 | gpiod_set_value(dev->device_wakeup, powered); | |
0395ffc1 FD |
188 | |
189 | if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) | |
730ce397 | 190 | clk_disable_unprepare(dev->clk); |
0395ffc1 FD |
191 | |
192 | dev->clk_enabled = powered; | |
193 | ||
194 | return 0; | |
195 | } | |
196 | ||
b7a622a2 | 197 | #ifdef CONFIG_PM |
6cc4396c FD |
198 | static irqreturn_t bcm_host_wake(int irq, void *data) |
199 | { | |
200 | struct bcm_device *bdev = data; | |
201 | ||
202 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
203 | ||
c0d3ce58 HG |
204 | pm_runtime_get(bdev->dev); |
205 | pm_runtime_mark_last_busy(bdev->dev); | |
206 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 207 | |
6cc4396c FD |
208 | return IRQ_HANDLED; |
209 | } | |
210 | ||
211 | static int bcm_request_irq(struct bcm_data *bcm) | |
212 | { | |
213 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 214 | int err; |
6cc4396c | 215 | |
6cc4396c FD |
216 | mutex_lock(&bcm_device_lock); |
217 | if (!bcm_device_exists(bdev)) { | |
218 | err = -ENODEV; | |
219 | goto unlock; | |
220 | } | |
221 | ||
98dc77d5 LP |
222 | if (bdev->irq <= 0) { |
223 | err = -EOPNOTSUPP; | |
224 | goto unlock; | |
225 | } | |
6cc4396c | 226 | |
c0d3ce58 | 227 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
228 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
229 | IRQF_TRIGGER_RISING, | |
230 | "host_wake", bdev); | |
98dc77d5 LP |
231 | if (err) |
232 | goto unlock; | |
e88ab30d | 233 | |
c0d3ce58 | 234 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 235 | |
c0d3ce58 | 236 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 237 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
238 | pm_runtime_use_autosuspend(bdev->dev); |
239 | pm_runtime_set_active(bdev->dev); | |
240 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
241 | |
242 | unlock: | |
243 | mutex_unlock(&bcm_device_lock); | |
244 | ||
245 | return err; | |
246 | } | |
247 | ||
248 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
249 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
250 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
251 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
252 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
253 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
254 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 255 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
256 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
257 | /* Irrelevant USB flags */ | |
258 | .usb_auto_sleep = 0, | |
259 | .usb_resume_timeout = 0, | |
260 | .pulsed_host_wake = 0, | |
261 | .break_to_host = 0 | |
262 | }; | |
263 | ||
264 | static int bcm_setup_sleep(struct hci_uart *hu) | |
265 | { | |
266 | struct bcm_data *bcm = hu->priv; | |
267 | struct sk_buff *skb; | |
268 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
269 | ||
227630cc | 270 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
271 | |
272 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
273 | &sleep_params, HCI_INIT_TIMEOUT); | |
274 | if (IS_ERR(skb)) { | |
275 | int err = PTR_ERR(skb); | |
276 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
277 | return err; | |
278 | } | |
279 | kfree_skb(skb); | |
280 | ||
281 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
282 | ||
283 | return 0; | |
284 | } | |
285 | #else | |
286 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
287 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
288 | #endif | |
289 | ||
075e1f5e MH |
290 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
291 | { | |
292 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
293 | struct bcm_data *bcm = hu->priv; | |
294 | struct sk_buff *skb; | |
295 | ||
296 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
297 | return -ENETDOWN; | |
298 | ||
299 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
300 | if (!skb) |
301 | return -ENOMEM; | |
075e1f5e | 302 | |
634fef61 JB |
303 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
304 | skb_put_u8(skb, 0xf0); | |
305 | skb_put_u8(skb, enable); | |
075e1f5e MH |
306 | |
307 | skb_queue_tail(&bcm->txq, skb); | |
308 | hci_uart_tx_wakeup(hu); | |
309 | ||
310 | return 0; | |
311 | } | |
312 | ||
bdd8818e MH |
313 | static int bcm_open(struct hci_uart *hu) |
314 | { | |
315 | struct bcm_data *bcm; | |
0395ffc1 | 316 | struct list_head *p; |
bdd8818e | 317 | |
65ad07c9 | 318 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 319 | |
94d81df9 VD |
320 | if (!hci_uart_has_flow_control(hu)) |
321 | return -EOPNOTSUPP; | |
322 | ||
bdd8818e MH |
323 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); |
324 | if (!bcm) | |
325 | return -ENOMEM; | |
326 | ||
327 | skb_queue_head_init(&bcm->txq); | |
328 | ||
329 | hu->priv = bcm; | |
0395ffc1 | 330 | |
8a920568 HG |
331 | mutex_lock(&bcm_device_lock); |
332 | ||
33cd149e LP |
333 | if (hu->serdev) { |
334 | serdev_device_open(hu->serdev); | |
8a920568 | 335 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
336 | goto out; |
337 | } | |
338 | ||
95065a61 JH |
339 | if (!hu->tty->dev) |
340 | goto out; | |
341 | ||
0395ffc1 FD |
342 | list_for_each(p, &bcm_device_list) { |
343 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
344 | ||
345 | /* Retrieve saved bcm_device based on parent of the | |
346 | * platform device (saved during device probe) and | |
347 | * parent of tty device used by hci_uart | |
348 | */ | |
c0d3ce58 | 349 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 350 | bcm->dev = dev; |
b7a622a2 | 351 | #ifdef CONFIG_PM |
118612fb FD |
352 | dev->hu = hu; |
353 | #endif | |
0395ffc1 FD |
354 | break; |
355 | } | |
356 | } | |
357 | ||
95065a61 | 358 | out: |
8a920568 HG |
359 | if (bcm->dev) { |
360 | hu->init_speed = bcm->dev->init_speed; | |
361 | hu->oper_speed = bcm->dev->oper_speed; | |
362 | bcm_gpio_set_power(bcm->dev, true); | |
363 | } | |
364 | ||
365 | mutex_unlock(&bcm_device_lock); | |
bdd8818e MH |
366 | return 0; |
367 | } | |
368 | ||
369 | static int bcm_close(struct hci_uart *hu) | |
370 | { | |
371 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 372 | struct bcm_device *bdev = NULL; |
bdd8818e | 373 | |
65ad07c9 | 374 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 375 | |
0395ffc1 | 376 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 377 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
378 | |
379 | if (hu->serdev) { | |
380 | serdev_device_close(hu->serdev); | |
381 | bdev = serdev_device_get_drvdata(hu->serdev); | |
382 | } else if (bcm_device_exists(bcm->dev)) { | |
383 | bdev = bcm->dev; | |
384 | #ifdef CONFIG_PM | |
385 | bdev->hu = NULL; | |
386 | #endif | |
387 | } | |
388 | ||
389 | if (bdev) { | |
6cc4396c | 390 | bcm_gpio_set_power(bdev, false); |
b7a622a2 | 391 | #ifdef CONFIG_PM |
c0d3ce58 HG |
392 | pm_runtime_disable(bdev->dev); |
393 | pm_runtime_set_suspended(bdev->dev); | |
e88ab30d | 394 | |
514a00bf | 395 | if (bdev->irq > 0) { |
c0d3ce58 HG |
396 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
397 | device_init_wakeup(bdev->dev, false); | |
6cc4396c | 398 | } |
118612fb FD |
399 | #endif |
400 | } | |
bb3ea16a | 401 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 402 | |
bdd8818e MH |
403 | skb_queue_purge(&bcm->txq); |
404 | kfree_skb(bcm->rx_skb); | |
405 | kfree(bcm); | |
406 | ||
407 | hu->priv = NULL; | |
408 | return 0; | |
409 | } | |
410 | ||
411 | static int bcm_flush(struct hci_uart *hu) | |
412 | { | |
413 | struct bcm_data *bcm = hu->priv; | |
414 | ||
65ad07c9 | 415 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
416 | |
417 | skb_queue_purge(&bcm->txq); | |
418 | ||
419 | return 0; | |
420 | } | |
421 | ||
422 | static int bcm_setup(struct hci_uart *hu) | |
423 | { | |
6cc4396c | 424 | struct bcm_data *bcm = hu->priv; |
6be09b48 FD |
425 | char fw_name[64]; |
426 | const struct firmware *fw; | |
960ef1d7 | 427 | unsigned int speed; |
6be09b48 FD |
428 | int err; |
429 | ||
65ad07c9 | 430 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 431 | |
075e1f5e | 432 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
433 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
434 | ||
6be09b48 FD |
435 | err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name)); |
436 | if (err) | |
437 | return err; | |
438 | ||
439 | err = request_firmware(&fw, fw_name, &hu->hdev->dev); | |
440 | if (err < 0) { | |
65ad07c9 | 441 | bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name); |
6be09b48 FD |
442 | return 0; |
443 | } | |
444 | ||
445 | err = btbcm_patchram(hu->hdev, fw); | |
446 | if (err) { | |
65ad07c9 | 447 | bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err); |
6be09b48 FD |
448 | goto finalize; |
449 | } | |
450 | ||
960ef1d7 FD |
451 | /* Init speed if any */ |
452 | if (hu->init_speed) | |
453 | speed = hu->init_speed; | |
454 | else if (hu->proto->init_speed) | |
455 | speed = hu->proto->init_speed; | |
456 | else | |
457 | speed = 0; | |
458 | ||
459 | if (speed) | |
33cd149e | 460 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
461 | |
462 | /* Operational speed if any */ | |
463 | if (hu->oper_speed) | |
464 | speed = hu->oper_speed; | |
465 | else if (hu->proto->oper_speed) | |
466 | speed = hu->proto->oper_speed; | |
467 | else | |
468 | speed = 0; | |
469 | ||
470 | if (speed) { | |
471 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 472 | if (!err) |
33cd149e | 473 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
474 | } |
475 | ||
6be09b48 FD |
476 | finalize: |
477 | release_firmware(fw); | |
478 | ||
479 | err = btbcm_finalize(hu->hdev); | |
6cc4396c FD |
480 | if (err) |
481 | return err; | |
482 | ||
cdd24a20 | 483 | if (!bcm_request_irq(bcm)) |
6cc4396c | 484 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
485 | |
486 | return err; | |
bdd8818e MH |
487 | } |
488 | ||
94c58132 MH |
489 | #define BCM_RECV_LM_DIAG \ |
490 | .type = BCM_LM_DIAG_PKT, \ | |
491 | .hlen = BCM_LM_DIAG_SIZE, \ | |
492 | .loff = 0, \ | |
493 | .lsize = 0, \ | |
494 | .maxlen = BCM_LM_DIAG_SIZE | |
495 | ||
01d5e44a MH |
496 | #define BCM_RECV_NULL \ |
497 | .type = BCM_NULL_PKT, \ | |
498 | .hlen = BCM_NULL_SIZE, \ | |
499 | .loff = 0, \ | |
500 | .lsize = 0, \ | |
501 | .maxlen = BCM_NULL_SIZE | |
502 | ||
54f2b063 JB |
503 | #define BCM_RECV_TYPE49 \ |
504 | .type = BCM_TYPE49_PKT, \ | |
505 | .hlen = BCM_TYPE49_SIZE, \ | |
506 | .loff = 0, \ | |
507 | .lsize = 0, \ | |
508 | .maxlen = BCM_TYPE49_SIZE | |
509 | ||
510 | #define BCM_RECV_TYPE52 \ | |
511 | .type = BCM_TYPE52_PKT, \ | |
512 | .hlen = BCM_TYPE52_SIZE, \ | |
513 | .loff = 0, \ | |
514 | .lsize = 0, \ | |
515 | .maxlen = BCM_TYPE52_SIZE | |
516 | ||
79b8df93 | 517 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
518 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
519 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
520 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
521 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, | |
01d5e44a | 522 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
54f2b063 JB |
523 | { BCM_RECV_TYPE49, .recv = hci_recv_diag }, |
524 | { BCM_RECV_TYPE52, .recv = hci_recv_diag }, | |
79b8df93 MH |
525 | }; |
526 | ||
bdd8818e MH |
527 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
528 | { | |
529 | struct bcm_data *bcm = hu->priv; | |
530 | ||
531 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
532 | return -EUNATCH; | |
533 | ||
79b8df93 MH |
534 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
535 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
536 | if (IS_ERR(bcm->rx_skb)) { |
537 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 538 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 539 | bcm->rx_skb = NULL; |
bdd8818e | 540 | return err; |
e88ab30d FD |
541 | } else if (!bcm->rx_skb) { |
542 | /* Delay auto-suspend when receiving completed packet */ | |
543 | mutex_lock(&bcm_device_lock); | |
544 | if (bcm->dev && bcm_device_exists(bcm->dev)) { | |
c0d3ce58 HG |
545 | pm_runtime_get(bcm->dev->dev); |
546 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
547 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
e88ab30d FD |
548 | } |
549 | mutex_unlock(&bcm_device_lock); | |
bdd8818e MH |
550 | } |
551 | ||
552 | return count; | |
553 | } | |
554 | ||
555 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
556 | { | |
557 | struct bcm_data *bcm = hu->priv; | |
558 | ||
65ad07c9 | 559 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
560 | |
561 | /* Prepend skb with frame type */ | |
618e8bc2 | 562 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
563 | skb_queue_tail(&bcm->txq, skb); |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
569 | { | |
570 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
571 | struct sk_buff *skb = NULL; |
572 | struct bcm_device *bdev = NULL; | |
573 | ||
574 | mutex_lock(&bcm_device_lock); | |
575 | ||
576 | if (bcm_device_exists(bcm->dev)) { | |
577 | bdev = bcm->dev; | |
c0d3ce58 | 578 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
579 | /* Shall be resumed here */ |
580 | } | |
581 | ||
582 | skb = skb_dequeue(&bcm->txq); | |
583 | ||
584 | if (bdev) { | |
c0d3ce58 HG |
585 | pm_runtime_mark_last_busy(bdev->dev); |
586 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 587 | } |
bdd8818e | 588 | |
e88ab30d FD |
589 | mutex_unlock(&bcm_device_lock); |
590 | ||
591 | return skb; | |
bdd8818e MH |
592 | } |
593 | ||
b7a622a2 FD |
594 | #ifdef CONFIG_PM |
595 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 596 | { |
78277d73 | 597 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 598 | |
b7a622a2 | 599 | bt_dev_dbg(bdev, ""); |
917522aa | 600 | |
b7a622a2 | 601 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
602 | hci_uart_set_flow_control(bdev->hu, true); |
603 | ||
b7a622a2 | 604 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
605 | bdev->is_suspended = true; |
606 | } | |
607 | ||
608 | /* Suspend the device */ | |
c926558a LW |
609 | gpiod_set_value(bdev->device_wakeup, false); |
610 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); | |
611 | mdelay(15); | |
118612fb | 612 | |
b7a622a2 FD |
613 | return 0; |
614 | } | |
615 | ||
616 | static int bcm_resume_device(struct device *dev) | |
617 | { | |
78277d73 | 618 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
619 | |
620 | bt_dev_dbg(bdev, ""); | |
621 | ||
c926558a LW |
622 | gpiod_set_value(bdev->device_wakeup, true); |
623 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); | |
624 | mdelay(15); | |
b7a622a2 FD |
625 | |
626 | /* When this executes, the device has woken up already */ | |
627 | if (bdev->is_suspended && bdev->hu) { | |
628 | bdev->is_suspended = false; | |
629 | ||
630 | hci_uart_set_flow_control(bdev->hu, false); | |
631 | } | |
632 | ||
633 | return 0; | |
634 | } | |
635 | #endif | |
636 | ||
637 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 638 | /* suspend callback */ |
b7a622a2 FD |
639 | static int bcm_suspend(struct device *dev) |
640 | { | |
78277d73 | 641 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
642 | int error; |
643 | ||
644 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
645 | ||
8a920568 HG |
646 | /* |
647 | * When used with a device instantiated as platform_device, bcm_suspend | |
648 | * can be called at any time as long as the platform device is bound, | |
649 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
650 | * and device_wake-up GPIO. |
651 | */ | |
652 | mutex_lock(&bcm_device_lock); | |
653 | ||
654 | if (!bdev->hu) | |
655 | goto unlock; | |
656 | ||
e88ab30d FD |
657 | if (pm_runtime_active(dev)) |
658 | bcm_suspend_device(dev); | |
b7a622a2 | 659 | |
514a00bf | 660 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
661 | error = enable_irq_wake(bdev->irq); |
662 | if (!error) | |
663 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
664 | } | |
665 | ||
917522aa | 666 | unlock: |
bb3ea16a | 667 | mutex_unlock(&bcm_device_lock); |
917522aa | 668 | |
118612fb FD |
669 | return 0; |
670 | } | |
671 | ||
8a920568 | 672 | /* resume callback */ |
118612fb FD |
673 | static int bcm_resume(struct device *dev) |
674 | { | |
78277d73 | 675 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 676 | |
65ad07c9 | 677 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 678 | |
8a920568 HG |
679 | /* |
680 | * When used with a device instantiated as platform_device, bcm_resume | |
681 | * can be called at any time as long as platform device is bound, | |
682 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
683 | * and device_wake-up GPIO. |
684 | */ | |
bb3ea16a | 685 | mutex_lock(&bcm_device_lock); |
917522aa FD |
686 | |
687 | if (!bdev->hu) | |
688 | goto unlock; | |
689 | ||
514a00bf | 690 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
691 | disable_irq_wake(bdev->irq); |
692 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
693 | } | |
694 | ||
b7a622a2 | 695 | bcm_resume_device(dev); |
118612fb | 696 | |
917522aa | 697 | unlock: |
bb3ea16a | 698 | mutex_unlock(&bcm_device_lock); |
917522aa | 699 | |
e88ab30d FD |
700 | pm_runtime_disable(dev); |
701 | pm_runtime_set_active(dev); | |
702 | pm_runtime_enable(dev); | |
703 | ||
118612fb FD |
704 | return 0; |
705 | } | |
706 | #endif | |
707 | ||
89ab37b4 DD |
708 | static const struct acpi_gpio_params int_last_device_wakeup_gpios = { 0, 0, false }; |
709 | static const struct acpi_gpio_params int_last_shutdown_gpios = { 1, 0, false }; | |
710 | static const struct acpi_gpio_params int_last_host_wakeup_gpios = { 2, 0, false }; | |
711 | ||
712 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
713 | { "device-wakeup-gpios", &int_last_device_wakeup_gpios, 1 }, | |
714 | { "shutdown-gpios", &int_last_shutdown_gpios, 1 }, | |
715 | { "host-wakeup-gpios", &int_last_host_wakeup_gpios, 1 }, | |
716 | { }, | |
717 | }; | |
718 | ||
719 | static const struct acpi_gpio_params int_first_host_wakeup_gpios = { 0, 0, false }; | |
720 | static const struct acpi_gpio_params int_first_device_wakeup_gpios = { 1, 0, false }; | |
721 | static const struct acpi_gpio_params int_first_shutdown_gpios = { 2, 0, false }; | |
722 | ||
723 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { | |
724 | { "device-wakeup-gpios", &int_first_device_wakeup_gpios, 1 }, | |
725 | { "shutdown-gpios", &int_first_shutdown_gpios, 1 }, | |
726 | { "host-wakeup-gpios", &int_first_host_wakeup_gpios, 1 }, | |
0395ffc1 FD |
727 | { }, |
728 | }; | |
729 | ||
50d78bcf | 730 | #ifdef CONFIG_ACPI |
5cebdfea | 731 | /* IRQ polarity of some chipsets are not defined correctly in ACPI table. */ |
227630cc | 732 | static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = { |
5e2bd93b JB |
733 | { /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */ |
734 | .ident = "Lenovo ThinkPad 8", | |
735 | .matches = { | |
736 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
737 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"), | |
738 | }, | |
5e2bd93b | 739 | }, |
1bdb68b2 IM |
740 | { |
741 | .ident = "MINIX Z83-4", | |
742 | .matches = { | |
743 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MINIX"), | |
744 | DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), | |
745 | }, | |
746 | }, | |
5cebdfea FD |
747 | { } |
748 | }; | |
749 | ||
ae056908 FD |
750 | static int bcm_resource(struct acpi_resource *ares, void *data) |
751 | { | |
752 | struct bcm_device *dev = data; | |
6cc4396c FD |
753 | struct acpi_resource_extended_irq *irq; |
754 | struct acpi_resource_gpio *gpio; | |
755 | struct acpi_resource_uart_serialbus *sb; | |
756 | ||
757 | switch (ares->type) { | |
758 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
759 | irq = &ares->data.extended_irq; | |
09d86354 HG |
760 | if (irq->polarity != ACPI_ACTIVE_LOW) |
761 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
762 | dev->irq_active_low = true; | |
6cc4396c FD |
763 | break; |
764 | ||
765 | case ACPI_RESOURCE_TYPE_GPIO: | |
766 | gpio = &ares->data.gpio; | |
767 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) | |
227630cc | 768 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
6cc4396c FD |
769 | break; |
770 | ||
771 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 772 | sb = &ares->data.uart_serial_bus; |
74183a1c | 773 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 774 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
775 | dev->oper_speed = 4000000; |
776 | } | |
6cc4396c FD |
777 | break; |
778 | ||
779 | default: | |
780 | break; | |
ae056908 FD |
781 | } |
782 | ||
9d54fd6a | 783 | return 0; |
ae056908 | 784 | } |
212d7183 | 785 | #endif /* CONFIG_ACPI */ |
ae056908 | 786 | |
42ef18f0 | 787 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 788 | { |
c0d3ce58 | 789 | dev->name = dev_name(dev->dev); |
0395ffc1 | 790 | |
c0d3ce58 | 791 | dev->clk = devm_clk_get(dev->dev, NULL); |
89ab37b4 | 792 | |
d76a1513 CYT |
793 | /* Handle deferred probing */ |
794 | if (dev->clk == ERR_PTR(-EPROBE_DEFER)) | |
795 | return PTR_ERR(dev->clk); | |
796 | ||
aee67da6 SW |
797 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
798 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
799 | if (IS_ERR(dev->device_wakeup)) |
800 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 801 | |
aee67da6 SW |
802 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
803 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
804 | if (IS_ERR(dev->shutdown)) |
805 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 806 | |
6cc4396c | 807 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
808 | if (dev->irq <= 0) { |
809 | struct gpio_desc *gpio; | |
810 | ||
c0d3ce58 | 811 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
812 | GPIOD_IN); |
813 | if (IS_ERR(gpio)) | |
814 | return PTR_ERR(gpio); | |
815 | ||
816 | dev->irq = gpiod_to_irq(gpio); | |
817 | } | |
818 | ||
c0d3ce58 | 819 | dev_info(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
820 | return 0; |
821 | } | |
822 | ||
823 | #ifdef CONFIG_ACPI | |
824 | static int bcm_acpi_probe(struct bcm_device *dev) | |
825 | { | |
212d7183 AS |
826 | LIST_HEAD(resources); |
827 | const struct dmi_system_id *dmi_id; | |
828 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; | |
829 | const struct acpi_device_id *id; | |
9d54fd6a | 830 | struct resource_entry *entry; |
212d7183 AS |
831 | int ret; |
832 | ||
833 | /* Retrieve GPIO data */ | |
c0d3ce58 | 834 | id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev); |
212d7183 AS |
835 | if (id) |
836 | gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data; | |
837 | ||
c0d3ce58 | 838 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); |
212d7183 AS |
839 | if (ret) |
840 | return ret; | |
841 | ||
ae056908 | 842 | /* Retrieve UART ACPI info */ |
c0d3ce58 | 843 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 844 | &resources, bcm_resource, dev); |
5be00284 JN |
845 | if (ret < 0) |
846 | return ret; | |
9d54fd6a HG |
847 | |
848 | resource_list_for_each_entry(entry, &resources) { | |
849 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
850 | dev->irq = entry->res->start; | |
851 | break; | |
852 | } | |
853 | } | |
09dbf1b7 | 854 | acpi_dev_free_resource_list(&resources); |
ae056908 | 855 | |
5bffac2b HG |
856 | if (irq_polarity != -1) { |
857 | dev->irq_active_low = irq_polarity; | |
858 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
859 | dev->irq_active_low ? "low" : "high"); | |
860 | } else { | |
861 | dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table); | |
862 | if (dmi_id) { | |
863 | dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low", | |
864 | dmi_id->ident); | |
865 | dev->irq_active_low = true; | |
866 | } | |
5cebdfea FD |
867 | } |
868 | ||
0395ffc1 FD |
869 | return 0; |
870 | } | |
50d78bcf FD |
871 | #else |
872 | static int bcm_acpi_probe(struct bcm_device *dev) | |
873 | { | |
874 | return -EINVAL; | |
875 | } | |
876 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 877 | |
8a920568 HG |
878 | static int bcm_of_probe(struct bcm_device *bdev) |
879 | { | |
880 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
881 | return 0; | |
882 | } | |
883 | ||
0395ffc1 FD |
884 | static int bcm_probe(struct platform_device *pdev) |
885 | { | |
886 | struct bcm_device *dev; | |
0395ffc1 FD |
887 | int ret; |
888 | ||
889 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
890 | if (!dev) | |
891 | return -ENOMEM; | |
892 | ||
c0d3ce58 | 893 | dev->dev = &pdev->dev; |
4a56f891 | 894 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 895 | |
201762e2 | 896 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 897 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
898 | if (ret) |
899 | return ret; | |
900 | } | |
901 | ||
42ef18f0 | 902 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
903 | if (ret) |
904 | return ret; | |
0395ffc1 FD |
905 | |
906 | platform_set_drvdata(pdev, dev); | |
907 | ||
908 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
909 | ||
910 | /* Place this instance on the device list */ | |
bb3ea16a | 911 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 912 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 913 | mutex_unlock(&bcm_device_lock); |
0395ffc1 FD |
914 | |
915 | bcm_gpio_set_power(dev, false); | |
916 | ||
917 | return 0; | |
918 | } | |
919 | ||
920 | static int bcm_remove(struct platform_device *pdev) | |
921 | { | |
922 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
923 | ||
bb3ea16a | 924 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 925 | list_del(&dev->list); |
bb3ea16a | 926 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 927 | |
0395ffc1 FD |
928 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
929 | ||
930 | return 0; | |
931 | } | |
932 | ||
bdd8818e MH |
933 | static const struct hci_uart_proto bcm_proto = { |
934 | .id = HCI_UART_BCM, | |
143f0a28 | 935 | .name = "Broadcom", |
aee61f7a | 936 | .manufacturer = 15, |
61b2fc2b | 937 | .init_speed = 115200, |
bdd8818e MH |
938 | .open = bcm_open, |
939 | .close = bcm_close, | |
940 | .flush = bcm_flush, | |
941 | .setup = bcm_setup, | |
61b2fc2b | 942 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
943 | .recv = bcm_recv, |
944 | .enqueue = bcm_enqueue, | |
945 | .dequeue = bcm_dequeue, | |
946 | }; | |
947 | ||
0395ffc1 FD |
948 | #ifdef CONFIG_ACPI |
949 | static const struct acpi_device_id bcm_acpi_match[] = { | |
89ab37b4 DD |
950 | { "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
951 | { "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
952 | { "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
953 | { "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
954 | { "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
955 | { "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
956 | { "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
957 | { "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
958 | { "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
959 | { "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
960 | { "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
961 | { "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
962 | { "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
963 | { "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
61d220a6 | 964 | { "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
89ab37b4 DD |
965 | { "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
966 | { "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, | |
1bdb68b2 | 967 | { "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
0395ffc1 FD |
968 | { }, |
969 | }; | |
970 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
971 | #endif | |
972 | ||
8a920568 | 973 | /* suspend and resume callbacks */ |
e88ab30d FD |
974 | static const struct dev_pm_ops bcm_pm_ops = { |
975 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
976 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
977 | }; | |
118612fb | 978 | |
0395ffc1 FD |
979 | static struct platform_driver bcm_driver = { |
980 | .probe = bcm_probe, | |
981 | .remove = bcm_remove, | |
982 | .driver = { | |
983 | .name = "hci_bcm", | |
984 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 985 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
986 | }, |
987 | }; | |
988 | ||
33cd149e LP |
989 | static int bcm_serdev_probe(struct serdev_device *serdev) |
990 | { | |
8a920568 | 991 | struct bcm_device *bcmdev; |
33cd149e LP |
992 | int err; |
993 | ||
994 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
995 | if (!bcmdev) | |
996 | return -ENOMEM; | |
997 | ||
8a920568 | 998 | bcmdev->dev = &serdev->dev; |
81a19053 | 999 | #ifdef CONFIG_PM |
8a920568 | 1000 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1001 | #endif |
8a920568 | 1002 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1003 | serdev_device_set_drvdata(serdev, bcmdev); |
1004 | ||
8a920568 HG |
1005 | if (has_acpi_companion(&serdev->dev)) |
1006 | err = bcm_acpi_probe(bcmdev); | |
1007 | else | |
1008 | err = bcm_of_probe(bcmdev); | |
1009 | if (err) | |
1010 | return err; | |
33cd149e | 1011 | |
8a920568 HG |
1012 | err = bcm_get_resources(bcmdev); |
1013 | if (err) | |
1014 | return err; | |
1015 | ||
1016 | bcm_gpio_set_power(bcmdev, false); | |
1017 | ||
1018 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); | |
33cd149e LP |
1019 | } |
1020 | ||
1021 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1022 | { | |
8a920568 | 1023 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1024 | |
8a920568 | 1025 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1026 | } |
1027 | ||
1028 | #ifdef CONFIG_OF | |
1029 | static const struct of_device_id bcm_bluetooth_of_match[] = { | |
1030 | { .compatible = "brcm,bcm43438-bt" }, | |
1031 | { }, | |
1032 | }; | |
1033 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1034 | #endif | |
1035 | ||
1036 | static struct serdev_device_driver bcm_serdev_driver = { | |
1037 | .probe = bcm_serdev_probe, | |
1038 | .remove = bcm_serdev_remove, | |
1039 | .driver = { | |
1040 | .name = "hci_uart_bcm", | |
1041 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1042 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1043 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1044 | }, |
1045 | }; | |
1046 | ||
bdd8818e MH |
1047 | int __init bcm_init(void) |
1048 | { | |
33cd149e LP |
1049 | /* For now, we need to keep both platform device |
1050 | * driver (ACPI generated) and serdev driver (DT). | |
1051 | */ | |
0395ffc1 | 1052 | platform_driver_register(&bcm_driver); |
33cd149e | 1053 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1054 | |
bdd8818e MH |
1055 | return hci_uart_register_proto(&bcm_proto); |
1056 | } | |
1057 | ||
1058 | int __exit bcm_deinit(void) | |
1059 | { | |
0395ffc1 | 1060 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1061 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1062 | |
bdd8818e MH |
1063 | return hci_uart_unregister_proto(&bcm_proto); |
1064 | } |