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 | ||
b7c2abac LW |
55 | /** |
56 | * struct bcm_device - device driver resources | |
57 | * @serdev_hu: HCI UART controller struct | |
58 | * @list: bcm_device_list node | |
59 | * @dev: physical UART slave | |
60 | * @name: device name logged by bt_dev_*() functions | |
61 | * @device_wakeup: BT_WAKE pin, | |
62 | * assert = Bluetooth device must wake up or remain awake, | |
63 | * deassert = Bluetooth device may sleep when sleep criteria are met | |
64 | * @shutdown: BT_REG_ON pin, | |
65 | * power up or power down Bluetooth device internal regulators | |
8353b4a6 LW |
66 | * @set_device_wakeup: callback to toggle BT_WAKE pin |
67 | * @set_shutdown: callback to toggle BT_REG_ON pin | |
b7c2abac LW |
68 | * @clk: clock used by Bluetooth device |
69 | * @clk_enabled: whether @clk is prepared and enabled | |
70 | * @init_speed: default baudrate of Bluetooth device; | |
71 | * the host UART is initially set to this baudrate so that | |
72 | * it can configure the Bluetooth device for @oper_speed | |
73 | * @oper_speed: preferred baudrate of Bluetooth device; | |
74 | * set to 0 if @init_speed is already the preferred baudrate | |
75 | * @irq: interrupt triggered by HOST_WAKE_BT pin | |
76 | * @irq_active_low: whether @irq is active low | |
77 | * @hu: pointer to HCI UART controller struct, | |
78 | * used to disable flow control during runtime suspend and system sleep | |
79 | * @is_suspended: whether flow control is currently disabled | |
80 | */ | |
0395ffc1 | 81 | struct bcm_device { |
8a920568 HG |
82 | /* Must be the first member, hci_serdev.c expects this. */ |
83 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
84 | struct list_head list; |
85 | ||
c0d3ce58 | 86 | struct device *dev; |
0395ffc1 FD |
87 | |
88 | const char *name; | |
89 | struct gpio_desc *device_wakeup; | |
90 | struct gpio_desc *shutdown; | |
8353b4a6 LW |
91 | int (*set_device_wakeup)(struct bcm_device *, bool); |
92 | int (*set_shutdown)(struct bcm_device *, bool); | |
0395ffc1 FD |
93 | |
94 | struct clk *clk; | |
95 | bool clk_enabled; | |
ae056908 FD |
96 | |
97 | u32 init_speed; | |
74183a1c | 98 | u32 oper_speed; |
6cc4396c | 99 | int irq; |
227630cc | 100 | bool irq_active_low; |
118612fb | 101 | |
b7a622a2 | 102 | #ifdef CONFIG_PM |
118612fb | 103 | struct hci_uart *hu; |
b7c2abac | 104 | bool is_suspended; |
118612fb | 105 | #endif |
0395ffc1 FD |
106 | }; |
107 | ||
33cd149e | 108 | /* generic bcm uart resources */ |
bdd8818e | 109 | struct bcm_data { |
0395ffc1 FD |
110 | struct sk_buff *rx_skb; |
111 | struct sk_buff_head txq; | |
112 | ||
113 | struct bcm_device *dev; | |
bdd8818e MH |
114 | }; |
115 | ||
0395ffc1 | 116 | /* List of BCM BT UART devices */ |
bb3ea16a | 117 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
118 | static LIST_HEAD(bcm_device_list); |
119 | ||
33cd149e LP |
120 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
121 | { | |
122 | if (hu->serdev) | |
123 | serdev_device_set_baudrate(hu->serdev, speed); | |
124 | else | |
125 | hci_uart_set_baudrate(hu, speed); | |
126 | } | |
127 | ||
61b2fc2b FD |
128 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
129 | { | |
130 | struct hci_dev *hdev = hu->hdev; | |
131 | struct sk_buff *skb; | |
132 | struct bcm_update_uart_baud_rate param; | |
133 | ||
134 | if (speed > 3000000) { | |
135 | struct bcm_write_uart_clock_setting clock; | |
136 | ||
137 | clock.type = BCM_UART_CLOCK_48MHZ; | |
138 | ||
65ad07c9 | 139 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
140 | |
141 | /* This Broadcom specific command changes the UART's controller | |
142 | * clock for baud rate > 3000000. | |
143 | */ | |
144 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
145 | if (IS_ERR(skb)) { | |
146 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
147 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
148 | err); | |
61b2fc2b FD |
149 | return err; |
150 | } | |
151 | ||
152 | kfree_skb(skb); | |
153 | } | |
154 | ||
65ad07c9 | 155 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
156 | |
157 | param.zero = cpu_to_le16(0); | |
158 | param.baud_rate = cpu_to_le32(speed); | |
159 | ||
160 | /* This Broadcom specific command changes the UART's controller baud | |
161 | * rate. | |
162 | */ | |
163 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
164 | HCI_INIT_TIMEOUT); | |
165 | if (IS_ERR(skb)) { | |
166 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
167 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
168 | err); | |
61b2fc2b FD |
169 | return err; |
170 | } | |
171 | ||
172 | kfree_skb(skb); | |
173 | ||
174 | return 0; | |
175 | } | |
176 | ||
917522aa | 177 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
178 | static bool bcm_device_exists(struct bcm_device *device) |
179 | { | |
180 | struct list_head *p; | |
181 | ||
81a19053 | 182 | #ifdef CONFIG_PM |
8a920568 HG |
183 | /* Devices using serdev always exist */ |
184 | if (device && device->hu && device->hu->serdev) | |
185 | return true; | |
81a19053 | 186 | #endif |
8a920568 | 187 | |
0395ffc1 FD |
188 | list_for_each(p, &bcm_device_list) { |
189 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
190 | ||
191 | if (device == dev) | |
192 | return true; | |
193 | } | |
194 | ||
195 | return false; | |
196 | } | |
197 | ||
198 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
199 | { | |
200 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) | |
730ce397 | 201 | clk_prepare_enable(dev->clk); |
0395ffc1 | 202 | |
8353b4a6 LW |
203 | dev->set_shutdown(dev, powered); |
204 | dev->set_device_wakeup(dev, powered); | |
0395ffc1 FD |
205 | |
206 | if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) | |
730ce397 | 207 | clk_disable_unprepare(dev->clk); |
0395ffc1 FD |
208 | |
209 | dev->clk_enabled = powered; | |
210 | ||
211 | return 0; | |
212 | } | |
213 | ||
b7a622a2 | 214 | #ifdef CONFIG_PM |
6cc4396c FD |
215 | static irqreturn_t bcm_host_wake(int irq, void *data) |
216 | { | |
217 | struct bcm_device *bdev = data; | |
218 | ||
219 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
220 | ||
43fff768 | 221 | pm_request_resume(bdev->dev); |
e88ab30d | 222 | |
6cc4396c FD |
223 | return IRQ_HANDLED; |
224 | } | |
225 | ||
226 | static int bcm_request_irq(struct bcm_data *bcm) | |
227 | { | |
228 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 229 | int err; |
6cc4396c | 230 | |
6cc4396c FD |
231 | mutex_lock(&bcm_device_lock); |
232 | if (!bcm_device_exists(bdev)) { | |
233 | err = -ENODEV; | |
234 | goto unlock; | |
235 | } | |
236 | ||
98dc77d5 LP |
237 | if (bdev->irq <= 0) { |
238 | err = -EOPNOTSUPP; | |
239 | goto unlock; | |
240 | } | |
6cc4396c | 241 | |
c0d3ce58 | 242 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
243 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
244 | IRQF_TRIGGER_RISING, | |
245 | "host_wake", bdev); | |
4dc27330 LW |
246 | if (err) { |
247 | bdev->irq = err; | |
98dc77d5 | 248 | goto unlock; |
4dc27330 | 249 | } |
e88ab30d | 250 | |
c0d3ce58 | 251 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 252 | |
c0d3ce58 | 253 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 254 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
255 | pm_runtime_use_autosuspend(bdev->dev); |
256 | pm_runtime_set_active(bdev->dev); | |
257 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
258 | |
259 | unlock: | |
260 | mutex_unlock(&bcm_device_lock); | |
261 | ||
262 | return err; | |
263 | } | |
264 | ||
265 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
266 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
267 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
268 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
269 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
270 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
271 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 272 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
273 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
274 | /* Irrelevant USB flags */ | |
275 | .usb_auto_sleep = 0, | |
276 | .usb_resume_timeout = 0, | |
277 | .pulsed_host_wake = 0, | |
278 | .break_to_host = 0 | |
279 | }; | |
280 | ||
281 | static int bcm_setup_sleep(struct hci_uart *hu) | |
282 | { | |
283 | struct bcm_data *bcm = hu->priv; | |
284 | struct sk_buff *skb; | |
285 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
286 | ||
227630cc | 287 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
288 | |
289 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
290 | &sleep_params, HCI_INIT_TIMEOUT); | |
291 | if (IS_ERR(skb)) { | |
292 | int err = PTR_ERR(skb); | |
293 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
294 | return err; | |
295 | } | |
296 | kfree_skb(skb); | |
297 | ||
298 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
299 | ||
300 | return 0; | |
301 | } | |
302 | #else | |
303 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
304 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
305 | #endif | |
306 | ||
075e1f5e MH |
307 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
308 | { | |
309 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
310 | struct bcm_data *bcm = hu->priv; | |
311 | struct sk_buff *skb; | |
312 | ||
313 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
314 | return -ENETDOWN; | |
315 | ||
316 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
317 | if (!skb) |
318 | return -ENOMEM; | |
075e1f5e | 319 | |
634fef61 JB |
320 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
321 | skb_put_u8(skb, 0xf0); | |
322 | skb_put_u8(skb, enable); | |
075e1f5e MH |
323 | |
324 | skb_queue_tail(&bcm->txq, skb); | |
325 | hci_uart_tx_wakeup(hu); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
bdd8818e MH |
330 | static int bcm_open(struct hci_uart *hu) |
331 | { | |
332 | struct bcm_data *bcm; | |
0395ffc1 | 333 | struct list_head *p; |
bdd8818e | 334 | |
65ad07c9 | 335 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
336 | |
337 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); | |
338 | if (!bcm) | |
339 | return -ENOMEM; | |
340 | ||
341 | skb_queue_head_init(&bcm->txq); | |
342 | ||
343 | hu->priv = bcm; | |
0395ffc1 | 344 | |
8a920568 HG |
345 | mutex_lock(&bcm_device_lock); |
346 | ||
33cd149e LP |
347 | if (hu->serdev) { |
348 | serdev_device_open(hu->serdev); | |
8a920568 | 349 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
350 | goto out; |
351 | } | |
352 | ||
95065a61 JH |
353 | if (!hu->tty->dev) |
354 | goto out; | |
355 | ||
0395ffc1 FD |
356 | list_for_each(p, &bcm_device_list) { |
357 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
358 | ||
359 | /* Retrieve saved bcm_device based on parent of the | |
360 | * platform device (saved during device probe) and | |
361 | * parent of tty device used by hci_uart | |
362 | */ | |
c0d3ce58 | 363 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 364 | bcm->dev = dev; |
b7a622a2 | 365 | #ifdef CONFIG_PM |
118612fb FD |
366 | dev->hu = hu; |
367 | #endif | |
0395ffc1 FD |
368 | break; |
369 | } | |
370 | } | |
371 | ||
95065a61 | 372 | out: |
8a920568 HG |
373 | if (bcm->dev) { |
374 | hu->init_speed = bcm->dev->init_speed; | |
375 | hu->oper_speed = bcm->dev->oper_speed; | |
376 | bcm_gpio_set_power(bcm->dev, true); | |
377 | } | |
378 | ||
379 | mutex_unlock(&bcm_device_lock); | |
bdd8818e MH |
380 | return 0; |
381 | } | |
382 | ||
383 | static int bcm_close(struct hci_uart *hu) | |
384 | { | |
385 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 386 | struct bcm_device *bdev = NULL; |
bdd8818e | 387 | |
65ad07c9 | 388 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 389 | |
0395ffc1 | 390 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 391 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
392 | |
393 | if (hu->serdev) { | |
394 | serdev_device_close(hu->serdev); | |
395 | bdev = serdev_device_get_drvdata(hu->serdev); | |
396 | } else if (bcm_device_exists(bcm->dev)) { | |
397 | bdev = bcm->dev; | |
398 | #ifdef CONFIG_PM | |
399 | bdev->hu = NULL; | |
400 | #endif | |
401 | } | |
402 | ||
403 | if (bdev) { | |
6d83f1ee | 404 | if (IS_ENABLED(CONFIG_PM) && bdev->irq > 0) { |
c0d3ce58 HG |
405 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
406 | device_init_wakeup(bdev->dev, false); | |
f4cf6b7e | 407 | pm_runtime_disable(bdev->dev); |
6cc4396c | 408 | } |
54ba69f9 LW |
409 | |
410 | bcm_gpio_set_power(bdev, false); | |
54ba69f9 | 411 | pm_runtime_set_suspended(bdev->dev); |
118612fb | 412 | } |
bb3ea16a | 413 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 414 | |
bdd8818e MH |
415 | skb_queue_purge(&bcm->txq); |
416 | kfree_skb(bcm->rx_skb); | |
417 | kfree(bcm); | |
418 | ||
419 | hu->priv = NULL; | |
420 | return 0; | |
421 | } | |
422 | ||
423 | static int bcm_flush(struct hci_uart *hu) | |
424 | { | |
425 | struct bcm_data *bcm = hu->priv; | |
426 | ||
65ad07c9 | 427 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
428 | |
429 | skb_queue_purge(&bcm->txq); | |
430 | ||
431 | return 0; | |
432 | } | |
433 | ||
434 | static int bcm_setup(struct hci_uart *hu) | |
435 | { | |
6cc4396c | 436 | struct bcm_data *bcm = hu->priv; |
6be09b48 FD |
437 | char fw_name[64]; |
438 | const struct firmware *fw; | |
960ef1d7 | 439 | unsigned int speed; |
6be09b48 FD |
440 | int err; |
441 | ||
65ad07c9 | 442 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 443 | |
075e1f5e | 444 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
445 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
446 | ||
6be09b48 FD |
447 | err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name)); |
448 | if (err) | |
449 | return err; | |
450 | ||
451 | err = request_firmware(&fw, fw_name, &hu->hdev->dev); | |
452 | if (err < 0) { | |
65ad07c9 | 453 | bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name); |
6be09b48 FD |
454 | return 0; |
455 | } | |
456 | ||
457 | err = btbcm_patchram(hu->hdev, fw); | |
458 | if (err) { | |
65ad07c9 | 459 | bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err); |
6be09b48 FD |
460 | goto finalize; |
461 | } | |
462 | ||
960ef1d7 FD |
463 | /* Init speed if any */ |
464 | if (hu->init_speed) | |
465 | speed = hu->init_speed; | |
466 | else if (hu->proto->init_speed) | |
467 | speed = hu->proto->init_speed; | |
468 | else | |
469 | speed = 0; | |
470 | ||
471 | if (speed) | |
33cd149e | 472 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
473 | |
474 | /* Operational speed if any */ | |
475 | if (hu->oper_speed) | |
476 | speed = hu->oper_speed; | |
477 | else if (hu->proto->oper_speed) | |
478 | speed = hu->proto->oper_speed; | |
479 | else | |
480 | speed = 0; | |
481 | ||
482 | if (speed) { | |
483 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 484 | if (!err) |
33cd149e | 485 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
486 | } |
487 | ||
6be09b48 FD |
488 | finalize: |
489 | release_firmware(fw); | |
490 | ||
491 | err = btbcm_finalize(hu->hdev); | |
6cc4396c FD |
492 | if (err) |
493 | return err; | |
494 | ||
cdd24a20 | 495 | if (!bcm_request_irq(bcm)) |
6cc4396c | 496 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
497 | |
498 | return err; | |
bdd8818e MH |
499 | } |
500 | ||
94c58132 MH |
501 | #define BCM_RECV_LM_DIAG \ |
502 | .type = BCM_LM_DIAG_PKT, \ | |
503 | .hlen = BCM_LM_DIAG_SIZE, \ | |
504 | .loff = 0, \ | |
505 | .lsize = 0, \ | |
506 | .maxlen = BCM_LM_DIAG_SIZE | |
507 | ||
01d5e44a MH |
508 | #define BCM_RECV_NULL \ |
509 | .type = BCM_NULL_PKT, \ | |
510 | .hlen = BCM_NULL_SIZE, \ | |
511 | .loff = 0, \ | |
512 | .lsize = 0, \ | |
513 | .maxlen = BCM_NULL_SIZE | |
514 | ||
79b8df93 | 515 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
516 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
517 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
518 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
519 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, | |
01d5e44a | 520 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
79b8df93 MH |
521 | }; |
522 | ||
bdd8818e MH |
523 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
524 | { | |
525 | struct bcm_data *bcm = hu->priv; | |
526 | ||
527 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
528 | return -EUNATCH; | |
529 | ||
79b8df93 MH |
530 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
531 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
532 | if (IS_ERR(bcm->rx_skb)) { |
533 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 534 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 535 | bcm->rx_skb = NULL; |
bdd8818e | 536 | return err; |
e88ab30d FD |
537 | } else if (!bcm->rx_skb) { |
538 | /* Delay auto-suspend when receiving completed packet */ | |
539 | mutex_lock(&bcm_device_lock); | |
43fff768 LW |
540 | if (bcm->dev && bcm_device_exists(bcm->dev)) |
541 | pm_request_resume(bcm->dev->dev); | |
e88ab30d | 542 | mutex_unlock(&bcm_device_lock); |
bdd8818e MH |
543 | } |
544 | ||
545 | return count; | |
546 | } | |
547 | ||
548 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
549 | { | |
550 | struct bcm_data *bcm = hu->priv; | |
551 | ||
65ad07c9 | 552 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
553 | |
554 | /* Prepend skb with frame type */ | |
618e8bc2 | 555 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
556 | skb_queue_tail(&bcm->txq, skb); |
557 | ||
558 | return 0; | |
559 | } | |
560 | ||
561 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
562 | { | |
563 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
564 | struct sk_buff *skb = NULL; |
565 | struct bcm_device *bdev = NULL; | |
566 | ||
567 | mutex_lock(&bcm_device_lock); | |
568 | ||
569 | if (bcm_device_exists(bcm->dev)) { | |
570 | bdev = bcm->dev; | |
c0d3ce58 | 571 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
572 | /* Shall be resumed here */ |
573 | } | |
574 | ||
575 | skb = skb_dequeue(&bcm->txq); | |
576 | ||
577 | if (bdev) { | |
c0d3ce58 HG |
578 | pm_runtime_mark_last_busy(bdev->dev); |
579 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 580 | } |
bdd8818e | 581 | |
e88ab30d FD |
582 | mutex_unlock(&bcm_device_lock); |
583 | ||
584 | return skb; | |
bdd8818e MH |
585 | } |
586 | ||
b7a622a2 FD |
587 | #ifdef CONFIG_PM |
588 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 589 | { |
78277d73 | 590 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 591 | |
b7a622a2 | 592 | bt_dev_dbg(bdev, ""); |
917522aa | 593 | |
b7a622a2 | 594 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
595 | hci_uart_set_flow_control(bdev->hu, true); |
596 | ||
b7a622a2 | 597 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
598 | bdev->is_suspended = true; |
599 | } | |
600 | ||
601 | /* Suspend the device */ | |
8353b4a6 | 602 | bdev->set_device_wakeup(bdev, false); |
3e81a4ca LW |
603 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); |
604 | mdelay(15); | |
118612fb | 605 | |
b7a622a2 FD |
606 | return 0; |
607 | } | |
608 | ||
609 | static int bcm_resume_device(struct device *dev) | |
610 | { | |
78277d73 | 611 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
612 | |
613 | bt_dev_dbg(bdev, ""); | |
614 | ||
8353b4a6 | 615 | bdev->set_device_wakeup(bdev, true); |
3e81a4ca LW |
616 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); |
617 | mdelay(15); | |
b7a622a2 FD |
618 | |
619 | /* When this executes, the device has woken up already */ | |
620 | if (bdev->is_suspended && bdev->hu) { | |
621 | bdev->is_suspended = false; | |
622 | ||
623 | hci_uart_set_flow_control(bdev->hu, false); | |
624 | } | |
625 | ||
626 | return 0; | |
627 | } | |
628 | #endif | |
629 | ||
630 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 631 | /* suspend callback */ |
b7a622a2 FD |
632 | static int bcm_suspend(struct device *dev) |
633 | { | |
78277d73 | 634 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
635 | int error; |
636 | ||
637 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
638 | ||
8a920568 HG |
639 | /* |
640 | * When used with a device instantiated as platform_device, bcm_suspend | |
641 | * can be called at any time as long as the platform device is bound, | |
642 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
643 | * and device_wake-up GPIO. |
644 | */ | |
645 | mutex_lock(&bcm_device_lock); | |
646 | ||
647 | if (!bdev->hu) | |
648 | goto unlock; | |
649 | ||
e88ab30d FD |
650 | if (pm_runtime_active(dev)) |
651 | bcm_suspend_device(dev); | |
b7a622a2 | 652 | |
4a59f1fa | 653 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
654 | error = enable_irq_wake(bdev->irq); |
655 | if (!error) | |
656 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
657 | } | |
658 | ||
917522aa | 659 | unlock: |
bb3ea16a | 660 | mutex_unlock(&bcm_device_lock); |
917522aa | 661 | |
118612fb FD |
662 | return 0; |
663 | } | |
664 | ||
8a920568 | 665 | /* resume callback */ |
118612fb FD |
666 | static int bcm_resume(struct device *dev) |
667 | { | |
78277d73 | 668 | struct bcm_device *bdev = dev_get_drvdata(dev); |
118612fb | 669 | |
65ad07c9 | 670 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 671 | |
8a920568 HG |
672 | /* |
673 | * When used with a device instantiated as platform_device, bcm_resume | |
674 | * can be called at any time as long as platform device is bound, | |
675 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
676 | * and device_wake-up GPIO. |
677 | */ | |
bb3ea16a | 678 | mutex_lock(&bcm_device_lock); |
917522aa FD |
679 | |
680 | if (!bdev->hu) | |
681 | goto unlock; | |
682 | ||
4a59f1fa | 683 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
684 | disable_irq_wake(bdev->irq); |
685 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
686 | } | |
687 | ||
b7a622a2 | 688 | bcm_resume_device(dev); |
118612fb | 689 | |
917522aa | 690 | unlock: |
bb3ea16a | 691 | mutex_unlock(&bcm_device_lock); |
917522aa | 692 | |
e88ab30d FD |
693 | pm_runtime_disable(dev); |
694 | pm_runtime_set_active(dev); | |
695 | pm_runtime_enable(dev); | |
696 | ||
118612fb FD |
697 | return 0; |
698 | } | |
699 | #endif | |
700 | ||
89ab37b4 DD |
701 | static const struct acpi_gpio_params int_last_device_wakeup_gpios = { 0, 0, false }; |
702 | static const struct acpi_gpio_params int_last_shutdown_gpios = { 1, 0, false }; | |
703 | static const struct acpi_gpio_params int_last_host_wakeup_gpios = { 2, 0, false }; | |
704 | ||
705 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
706 | { "device-wakeup-gpios", &int_last_device_wakeup_gpios, 1 }, | |
707 | { "shutdown-gpios", &int_last_shutdown_gpios, 1 }, | |
708 | { "host-wakeup-gpios", &int_last_host_wakeup_gpios, 1 }, | |
709 | { }, | |
710 | }; | |
711 | ||
712 | static const struct acpi_gpio_params int_first_host_wakeup_gpios = { 0, 0, false }; | |
713 | static const struct acpi_gpio_params int_first_device_wakeup_gpios = { 1, 0, false }; | |
714 | static const struct acpi_gpio_params int_first_shutdown_gpios = { 2, 0, false }; | |
715 | ||
716 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { | |
717 | { "device-wakeup-gpios", &int_first_device_wakeup_gpios, 1 }, | |
718 | { "shutdown-gpios", &int_first_shutdown_gpios, 1 }, | |
719 | { "host-wakeup-gpios", &int_first_host_wakeup_gpios, 1 }, | |
0395ffc1 FD |
720 | { }, |
721 | }; | |
722 | ||
50d78bcf | 723 | #ifdef CONFIG_ACPI |
5cebdfea | 724 | /* IRQ polarity of some chipsets are not defined correctly in ACPI table. */ |
227630cc | 725 | static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = { |
5cebdfea FD |
726 | { |
727 | .ident = "Asus T100TA", | |
728 | .matches = { | |
729 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, | |
730 | "ASUSTeK COMPUTER INC."), | |
731 | DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100TA"), | |
732 | }, | |
5cebdfea | 733 | }, |
c4c285da HG |
734 | { |
735 | .ident = "Asus T100CHI", | |
736 | .matches = { | |
737 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, | |
738 | "ASUSTeK COMPUTER INC."), | |
739 | DMI_EXACT_MATCH(DMI_PRODUCT_NAME, "T100CHI"), | |
740 | }, | |
c4c285da | 741 | }, |
5e2bd93b JB |
742 | { /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */ |
743 | .ident = "Lenovo ThinkPad 8", | |
744 | .matches = { | |
745 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
746 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"), | |
747 | }, | |
5e2bd93b | 748 | }, |
1bdb68b2 IM |
749 | { |
750 | .ident = "MINIX Z83-4", | |
751 | .matches = { | |
752 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MINIX"), | |
753 | DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), | |
754 | }, | |
755 | }, | |
5cebdfea FD |
756 | { } |
757 | }; | |
758 | ||
ae056908 FD |
759 | static int bcm_resource(struct acpi_resource *ares, void *data) |
760 | { | |
761 | struct bcm_device *dev = data; | |
6cc4396c FD |
762 | struct acpi_resource_extended_irq *irq; |
763 | struct acpi_resource_gpio *gpio; | |
764 | struct acpi_resource_uart_serialbus *sb; | |
765 | ||
766 | switch (ares->type) { | |
767 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
768 | irq = &ares->data.extended_irq; | |
227630cc | 769 | dev->irq_active_low = irq->polarity == ACPI_ACTIVE_LOW; |
6cc4396c FD |
770 | break; |
771 | ||
772 | case ACPI_RESOURCE_TYPE_GPIO: | |
773 | gpio = &ares->data.gpio; | |
774 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) | |
227630cc | 775 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
6cc4396c FD |
776 | break; |
777 | ||
778 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 779 | sb = &ares->data.uart_serial_bus; |
74183a1c | 780 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 781 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
782 | dev->oper_speed = 4000000; |
783 | } | |
6cc4396c FD |
784 | break; |
785 | ||
786 | default: | |
787 | break; | |
ae056908 FD |
788 | } |
789 | ||
9d54fd6a | 790 | return 0; |
ae056908 | 791 | } |
212d7183 | 792 | #endif /* CONFIG_ACPI */ |
ae056908 | 793 | |
8353b4a6 LW |
794 | static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake) |
795 | { | |
796 | gpiod_set_value(dev->device_wakeup, awake); | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered) | |
801 | { | |
802 | gpiod_set_value(dev->shutdown, powered); | |
803 | return 0; | |
804 | } | |
805 | ||
42ef18f0 | 806 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 807 | { |
c0d3ce58 | 808 | dev->name = dev_name(dev->dev); |
0395ffc1 | 809 | |
c0d3ce58 | 810 | dev->clk = devm_clk_get(dev->dev, NULL); |
89ab37b4 | 811 | |
3e81a4ca LW |
812 | dev->device_wakeup = devm_gpiod_get(dev->dev, "device-wakeup", |
813 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
814 | if (IS_ERR(dev->device_wakeup)) |
815 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 816 | |
3e81a4ca | 817 | dev->shutdown = devm_gpiod_get(dev->dev, "shutdown", GPIOD_OUT_LOW); |
62aaefa7 UKK |
818 | if (IS_ERR(dev->shutdown)) |
819 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 820 | |
8353b4a6 LW |
821 | dev->set_device_wakeup = bcm_gpio_set_device_wakeup; |
822 | dev->set_shutdown = bcm_gpio_set_shutdown; | |
823 | ||
6cc4396c | 824 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
825 | if (dev->irq <= 0) { |
826 | struct gpio_desc *gpio; | |
827 | ||
c0d3ce58 | 828 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
829 | GPIOD_IN); |
830 | if (IS_ERR(gpio)) | |
831 | return PTR_ERR(gpio); | |
832 | ||
833 | dev->irq = gpiod_to_irq(gpio); | |
834 | } | |
835 | ||
c0d3ce58 | 836 | dev_info(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
837 | return 0; |
838 | } | |
839 | ||
840 | #ifdef CONFIG_ACPI | |
841 | static int bcm_acpi_probe(struct bcm_device *dev) | |
842 | { | |
212d7183 AS |
843 | LIST_HEAD(resources); |
844 | const struct dmi_system_id *dmi_id; | |
845 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; | |
846 | const struct acpi_device_id *id; | |
9d54fd6a | 847 | struct resource_entry *entry; |
212d7183 AS |
848 | int ret; |
849 | ||
850 | /* Retrieve GPIO data */ | |
c0d3ce58 | 851 | id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev); |
212d7183 AS |
852 | if (id) |
853 | gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data; | |
854 | ||
c0d3ce58 | 855 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); |
212d7183 AS |
856 | if (ret) |
857 | return ret; | |
858 | ||
ae056908 | 859 | /* Retrieve UART ACPI info */ |
c0d3ce58 | 860 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 861 | &resources, bcm_resource, dev); |
5be00284 JN |
862 | if (ret < 0) |
863 | return ret; | |
9d54fd6a HG |
864 | |
865 | resource_list_for_each_entry(entry, &resources) { | |
866 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
867 | dev->irq = entry->res->start; | |
868 | break; | |
869 | } | |
870 | } | |
09dbf1b7 | 871 | acpi_dev_free_resource_list(&resources); |
ae056908 | 872 | |
227630cc | 873 | dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table); |
5cebdfea | 874 | if (dmi_id) { |
e8bfe868 | 875 | dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low", |
5cebdfea | 876 | dmi_id->ident); |
227630cc | 877 | dev->irq_active_low = true; |
5cebdfea FD |
878 | } |
879 | ||
0395ffc1 FD |
880 | return 0; |
881 | } | |
50d78bcf FD |
882 | #else |
883 | static int bcm_acpi_probe(struct bcm_device *dev) | |
884 | { | |
885 | return -EINVAL; | |
886 | } | |
887 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 888 | |
8a920568 HG |
889 | static int bcm_of_probe(struct bcm_device *bdev) |
890 | { | |
891 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
892 | return 0; | |
893 | } | |
894 | ||
0395ffc1 FD |
895 | static int bcm_probe(struct platform_device *pdev) |
896 | { | |
897 | struct bcm_device *dev; | |
0395ffc1 FD |
898 | int ret; |
899 | ||
900 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
901 | if (!dev) | |
902 | return -ENOMEM; | |
903 | ||
c0d3ce58 | 904 | dev->dev = &pdev->dev; |
4a56f891 | 905 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 906 | |
201762e2 | 907 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 908 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
909 | if (ret) |
910 | return ret; | |
911 | } | |
912 | ||
42ef18f0 | 913 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
914 | if (ret) |
915 | return ret; | |
0395ffc1 FD |
916 | |
917 | platform_set_drvdata(pdev, dev); | |
918 | ||
919 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
920 | ||
921 | /* Place this instance on the device list */ | |
bb3ea16a | 922 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 923 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 924 | mutex_unlock(&bcm_device_lock); |
0395ffc1 FD |
925 | |
926 | bcm_gpio_set_power(dev, false); | |
927 | ||
928 | return 0; | |
929 | } | |
930 | ||
931 | static int bcm_remove(struct platform_device *pdev) | |
932 | { | |
933 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
934 | ||
bb3ea16a | 935 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 936 | list_del(&dev->list); |
bb3ea16a | 937 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 938 | |
0395ffc1 FD |
939 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
bdd8818e MH |
944 | static const struct hci_uart_proto bcm_proto = { |
945 | .id = HCI_UART_BCM, | |
143f0a28 | 946 | .name = "Broadcom", |
aee61f7a | 947 | .manufacturer = 15, |
61b2fc2b | 948 | .init_speed = 115200, |
bdd8818e MH |
949 | .open = bcm_open, |
950 | .close = bcm_close, | |
951 | .flush = bcm_flush, | |
952 | .setup = bcm_setup, | |
61b2fc2b | 953 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
954 | .recv = bcm_recv, |
955 | .enqueue = bcm_enqueue, | |
956 | .dequeue = bcm_dequeue, | |
957 | }; | |
958 | ||
0395ffc1 FD |
959 | #ifdef CONFIG_ACPI |
960 | static const struct acpi_device_id bcm_acpi_match[] = { | |
89ab37b4 DD |
961 | { "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
962 | { "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
963 | { "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
964 | { "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
965 | { "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
966 | { "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
967 | { "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
968 | { "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
969 | { "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
970 | { "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
971 | { "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
972 | { "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
c23fae11 | 973 | { "BCM2E72", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
89ab37b4 DD |
974 | { "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
975 | { "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
61d220a6 | 976 | { "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
89ab37b4 DD |
977 | { "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
978 | { "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, | |
1bdb68b2 | 979 | { "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
0395ffc1 FD |
980 | { }, |
981 | }; | |
982 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
983 | #endif | |
984 | ||
8a920568 | 985 | /* suspend and resume callbacks */ |
e88ab30d FD |
986 | static const struct dev_pm_ops bcm_pm_ops = { |
987 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
988 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
989 | }; | |
118612fb | 990 | |
0395ffc1 FD |
991 | static struct platform_driver bcm_driver = { |
992 | .probe = bcm_probe, | |
993 | .remove = bcm_remove, | |
994 | .driver = { | |
995 | .name = "hci_bcm", | |
996 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 997 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
998 | }, |
999 | }; | |
1000 | ||
33cd149e LP |
1001 | static int bcm_serdev_probe(struct serdev_device *serdev) |
1002 | { | |
8a920568 | 1003 | struct bcm_device *bcmdev; |
33cd149e LP |
1004 | int err; |
1005 | ||
1006 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
1007 | if (!bcmdev) | |
1008 | return -ENOMEM; | |
1009 | ||
8a920568 | 1010 | bcmdev->dev = &serdev->dev; |
81a19053 | 1011 | #ifdef CONFIG_PM |
8a920568 | 1012 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1013 | #endif |
8a920568 | 1014 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1015 | serdev_device_set_drvdata(serdev, bcmdev); |
1016 | ||
8a920568 HG |
1017 | if (has_acpi_companion(&serdev->dev)) |
1018 | err = bcm_acpi_probe(bcmdev); | |
1019 | else | |
1020 | err = bcm_of_probe(bcmdev); | |
1021 | if (err) | |
1022 | return err; | |
33cd149e | 1023 | |
8a920568 HG |
1024 | err = bcm_get_resources(bcmdev); |
1025 | if (err) | |
1026 | return err; | |
1027 | ||
1028 | bcm_gpio_set_power(bcmdev, false); | |
1029 | ||
1030 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); | |
33cd149e LP |
1031 | } |
1032 | ||
1033 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1034 | { | |
8a920568 | 1035 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1036 | |
8a920568 | 1037 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1038 | } |
1039 | ||
1040 | #ifdef CONFIG_OF | |
1041 | static const struct of_device_id bcm_bluetooth_of_match[] = { | |
1042 | { .compatible = "brcm,bcm43438-bt" }, | |
1043 | { }, | |
1044 | }; | |
1045 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1046 | #endif | |
1047 | ||
1048 | static struct serdev_device_driver bcm_serdev_driver = { | |
1049 | .probe = bcm_serdev_probe, | |
1050 | .remove = bcm_serdev_remove, | |
1051 | .driver = { | |
1052 | .name = "hci_uart_bcm", | |
1053 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1054 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1055 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1056 | }, |
1057 | }; | |
1058 | ||
bdd8818e MH |
1059 | int __init bcm_init(void) |
1060 | { | |
33cd149e LP |
1061 | /* For now, we need to keep both platform device |
1062 | * driver (ACPI generated) and serdev driver (DT). | |
1063 | */ | |
0395ffc1 | 1064 | platform_driver_register(&bcm_driver); |
33cd149e | 1065 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1066 | |
bdd8818e MH |
1067 | return hci_uart_register_proto(&bcm_proto); |
1068 | } | |
1069 | ||
1070 | int __exit bcm_deinit(void) | |
1071 | { | |
0395ffc1 | 1072 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1073 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1074 | |
bdd8818e MH |
1075 | return hci_uart_unregister_proto(&bcm_proto); |
1076 | } |