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> | |
4c33162c | 32 | #include <linux/platform_data/x86/apple.h> |
0395ffc1 FD |
33 | #include <linux/platform_device.h> |
34 | #include <linux/clk.h> | |
35 | #include <linux/gpio/consumer.h> | |
36 | #include <linux/tty.h> | |
6cc4396c | 37 | #include <linux/interrupt.h> |
5cebdfea | 38 | #include <linux/dmi.h> |
e88ab30d | 39 | #include <linux/pm_runtime.h> |
33cd149e | 40 | #include <linux/serdev.h> |
e9a2dd26 MH |
41 | |
42 | #include <net/bluetooth/bluetooth.h> | |
43 | #include <net/bluetooth/hci_core.h> | |
44 | ||
bdd8818e | 45 | #include "btbcm.h" |
e9a2dd26 | 46 | #include "hci_uart.h" |
bdd8818e | 47 | |
01d5e44a MH |
48 | #define BCM_NULL_PKT 0x00 |
49 | #define BCM_NULL_SIZE 0 | |
50 | ||
94c58132 MH |
51 | #define BCM_LM_DIAG_PKT 0x07 |
52 | #define BCM_LM_DIAG_SIZE 63 | |
53 | ||
e88ab30d FD |
54 | #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */ |
55 | ||
b7c2abac LW |
56 | /** |
57 | * struct bcm_device - device driver resources | |
58 | * @serdev_hu: HCI UART controller struct | |
59 | * @list: bcm_device_list node | |
60 | * @dev: physical UART slave | |
61 | * @name: device name logged by bt_dev_*() functions | |
62 | * @device_wakeup: BT_WAKE pin, | |
63 | * assert = Bluetooth device must wake up or remain awake, | |
64 | * deassert = Bluetooth device may sleep when sleep criteria are met | |
65 | * @shutdown: BT_REG_ON pin, | |
66 | * power up or power down Bluetooth device internal regulators | |
8353b4a6 | 67 | * @set_device_wakeup: callback to toggle BT_WAKE pin |
4c33162c | 68 | * either by accessing @device_wakeup or by calling @btlp |
8353b4a6 | 69 | * @set_shutdown: callback to toggle BT_REG_ON pin |
4c33162c LW |
70 | * either by accessing @shutdown or by calling @btpu/@btpd |
71 | * @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power") | |
72 | * @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up") | |
73 | * @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down") | |
b7c2abac LW |
74 | * @clk: clock used by Bluetooth device |
75 | * @clk_enabled: whether @clk is prepared and enabled | |
76 | * @init_speed: default baudrate of Bluetooth device; | |
77 | * the host UART is initially set to this baudrate so that | |
78 | * it can configure the Bluetooth device for @oper_speed | |
79 | * @oper_speed: preferred baudrate of Bluetooth device; | |
80 | * set to 0 if @init_speed is already the preferred baudrate | |
81 | * @irq: interrupt triggered by HOST_WAKE_BT pin | |
82 | * @irq_active_low: whether @irq is active low | |
83 | * @hu: pointer to HCI UART controller struct, | |
84 | * used to disable flow control during runtime suspend and system sleep | |
85 | * @is_suspended: whether flow control is currently disabled | |
86 | */ | |
0395ffc1 | 87 | struct bcm_device { |
8a920568 HG |
88 | /* Must be the first member, hci_serdev.c expects this. */ |
89 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
90 | struct list_head list; |
91 | ||
c0d3ce58 | 92 | struct device *dev; |
0395ffc1 FD |
93 | |
94 | const char *name; | |
95 | struct gpio_desc *device_wakeup; | |
96 | struct gpio_desc *shutdown; | |
8353b4a6 LW |
97 | int (*set_device_wakeup)(struct bcm_device *, bool); |
98 | int (*set_shutdown)(struct bcm_device *, bool); | |
4c33162c LW |
99 | #ifdef CONFIG_ACPI |
100 | acpi_handle btlp, btpu, btpd; | |
101 | #endif | |
0395ffc1 FD |
102 | |
103 | struct clk *clk; | |
104 | bool clk_enabled; | |
ae056908 FD |
105 | |
106 | u32 init_speed; | |
74183a1c | 107 | u32 oper_speed; |
6cc4396c | 108 | int irq; |
227630cc | 109 | bool irq_active_low; |
118612fb | 110 | |
b7a622a2 | 111 | #ifdef CONFIG_PM |
118612fb | 112 | struct hci_uart *hu; |
b7c2abac | 113 | bool is_suspended; |
118612fb | 114 | #endif |
0395ffc1 FD |
115 | }; |
116 | ||
33cd149e | 117 | /* generic bcm uart resources */ |
bdd8818e | 118 | struct bcm_data { |
0395ffc1 FD |
119 | struct sk_buff *rx_skb; |
120 | struct sk_buff_head txq; | |
121 | ||
122 | struct bcm_device *dev; | |
bdd8818e MH |
123 | }; |
124 | ||
0395ffc1 | 125 | /* List of BCM BT UART devices */ |
bb3ea16a | 126 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
127 | static LIST_HEAD(bcm_device_list); |
128 | ||
e09070c5 HG |
129 | static int irq_polarity = -1; |
130 | module_param(irq_polarity, int, 0444); | |
131 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
132 | ||
33cd149e LP |
133 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
134 | { | |
135 | if (hu->serdev) | |
136 | serdev_device_set_baudrate(hu->serdev, speed); | |
137 | else | |
138 | hci_uart_set_baudrate(hu, speed); | |
139 | } | |
140 | ||
61b2fc2b FD |
141 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
142 | { | |
143 | struct hci_dev *hdev = hu->hdev; | |
144 | struct sk_buff *skb; | |
145 | struct bcm_update_uart_baud_rate param; | |
146 | ||
147 | if (speed > 3000000) { | |
148 | struct bcm_write_uart_clock_setting clock; | |
149 | ||
150 | clock.type = BCM_UART_CLOCK_48MHZ; | |
151 | ||
65ad07c9 | 152 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
153 | |
154 | /* This Broadcom specific command changes the UART's controller | |
155 | * clock for baud rate > 3000000. | |
156 | */ | |
157 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
158 | if (IS_ERR(skb)) { | |
159 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
160 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
161 | err); | |
61b2fc2b FD |
162 | return err; |
163 | } | |
164 | ||
165 | kfree_skb(skb); | |
166 | } | |
167 | ||
65ad07c9 | 168 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
169 | |
170 | param.zero = cpu_to_le16(0); | |
171 | param.baud_rate = cpu_to_le32(speed); | |
172 | ||
173 | /* This Broadcom specific command changes the UART's controller baud | |
174 | * rate. | |
175 | */ | |
176 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
177 | HCI_INIT_TIMEOUT); | |
178 | if (IS_ERR(skb)) { | |
179 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
180 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
181 | err); | |
61b2fc2b FD |
182 | return err; |
183 | } | |
184 | ||
185 | kfree_skb(skb); | |
186 | ||
187 | return 0; | |
188 | } | |
189 | ||
917522aa | 190 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
191 | static bool bcm_device_exists(struct bcm_device *device) |
192 | { | |
193 | struct list_head *p; | |
194 | ||
81a19053 | 195 | #ifdef CONFIG_PM |
8a920568 HG |
196 | /* Devices using serdev always exist */ |
197 | if (device && device->hu && device->hu->serdev) | |
198 | return true; | |
81a19053 | 199 | #endif |
8a920568 | 200 | |
0395ffc1 FD |
201 | list_for_each(p, &bcm_device_list) { |
202 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
203 | ||
204 | if (device == dev) | |
205 | return true; | |
206 | } | |
207 | ||
208 | return false; | |
209 | } | |
210 | ||
211 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
212 | { | |
8bfa7e1e | 213 | int err; |
0395ffc1 | 214 | |
8bfa7e1e LW |
215 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) { |
216 | err = clk_prepare_enable(dev->clk); | |
217 | if (err) | |
218 | return err; | |
219 | } | |
220 | ||
221 | err = dev->set_shutdown(dev, powered); | |
222 | if (err) | |
223 | goto err_clk_disable; | |
224 | ||
225 | err = dev->set_device_wakeup(dev, powered); | |
226 | if (err) | |
227 | goto err_revert_shutdown; | |
0395ffc1 FD |
228 | |
229 | if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) | |
730ce397 | 230 | clk_disable_unprepare(dev->clk); |
0395ffc1 FD |
231 | |
232 | dev->clk_enabled = powered; | |
233 | ||
234 | return 0; | |
8bfa7e1e LW |
235 | |
236 | err_revert_shutdown: | |
237 | dev->set_shutdown(dev, !powered); | |
238 | err_clk_disable: | |
239 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) | |
240 | clk_disable_unprepare(dev->clk); | |
241 | return err; | |
0395ffc1 FD |
242 | } |
243 | ||
b7a622a2 | 244 | #ifdef CONFIG_PM |
6cc4396c FD |
245 | static irqreturn_t bcm_host_wake(int irq, void *data) |
246 | { | |
247 | struct bcm_device *bdev = data; | |
248 | ||
249 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
250 | ||
b09c6152 HG |
251 | pm_runtime_get(bdev->dev); |
252 | pm_runtime_mark_last_busy(bdev->dev); | |
253 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 254 | |
6cc4396c FD |
255 | return IRQ_HANDLED; |
256 | } | |
257 | ||
258 | static int bcm_request_irq(struct bcm_data *bcm) | |
259 | { | |
260 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 261 | int err; |
6cc4396c | 262 | |
6cc4396c FD |
263 | mutex_lock(&bcm_device_lock); |
264 | if (!bcm_device_exists(bdev)) { | |
265 | err = -ENODEV; | |
266 | goto unlock; | |
267 | } | |
268 | ||
98dc77d5 LP |
269 | if (bdev->irq <= 0) { |
270 | err = -EOPNOTSUPP; | |
271 | goto unlock; | |
272 | } | |
6cc4396c | 273 | |
c0d3ce58 | 274 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
275 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
276 | IRQF_TRIGGER_RISING, | |
277 | "host_wake", bdev); | |
4dc27330 LW |
278 | if (err) { |
279 | bdev->irq = err; | |
98dc77d5 | 280 | goto unlock; |
4dc27330 | 281 | } |
e88ab30d | 282 | |
c0d3ce58 | 283 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 284 | |
c0d3ce58 | 285 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 286 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
287 | pm_runtime_use_autosuspend(bdev->dev); |
288 | pm_runtime_set_active(bdev->dev); | |
289 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
290 | |
291 | unlock: | |
292 | mutex_unlock(&bcm_device_lock); | |
293 | ||
294 | return err; | |
295 | } | |
296 | ||
297 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
298 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
299 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
300 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
301 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
302 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
303 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 304 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
305 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
306 | /* Irrelevant USB flags */ | |
307 | .usb_auto_sleep = 0, | |
308 | .usb_resume_timeout = 0, | |
ff875960 | 309 | .break_to_host = 0, |
e07c99b0 | 310 | .pulsed_host_wake = 1, |
6cc4396c FD |
311 | }; |
312 | ||
313 | static int bcm_setup_sleep(struct hci_uart *hu) | |
314 | { | |
315 | struct bcm_data *bcm = hu->priv; | |
316 | struct sk_buff *skb; | |
317 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
318 | ||
227630cc | 319 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
320 | |
321 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
322 | &sleep_params, HCI_INIT_TIMEOUT); | |
323 | if (IS_ERR(skb)) { | |
324 | int err = PTR_ERR(skb); | |
325 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
326 | return err; | |
327 | } | |
328 | kfree_skb(skb); | |
329 | ||
330 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
331 | ||
332 | return 0; | |
333 | } | |
334 | #else | |
335 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
336 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
337 | #endif | |
338 | ||
075e1f5e MH |
339 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
340 | { | |
341 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
342 | struct bcm_data *bcm = hu->priv; | |
343 | struct sk_buff *skb; | |
344 | ||
345 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
346 | return -ENETDOWN; | |
347 | ||
348 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
349 | if (!skb) |
350 | return -ENOMEM; | |
075e1f5e | 351 | |
634fef61 JB |
352 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
353 | skb_put_u8(skb, 0xf0); | |
354 | skb_put_u8(skb, enable); | |
075e1f5e MH |
355 | |
356 | skb_queue_tail(&bcm->txq, skb); | |
357 | hci_uart_tx_wakeup(hu); | |
358 | ||
359 | return 0; | |
360 | } | |
361 | ||
bdd8818e MH |
362 | static int bcm_open(struct hci_uart *hu) |
363 | { | |
364 | struct bcm_data *bcm; | |
0395ffc1 | 365 | struct list_head *p; |
8bfa7e1e | 366 | int err; |
bdd8818e | 367 | |
65ad07c9 | 368 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
369 | |
370 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); | |
371 | if (!bcm) | |
372 | return -ENOMEM; | |
373 | ||
374 | skb_queue_head_init(&bcm->txq); | |
375 | ||
376 | hu->priv = bcm; | |
0395ffc1 | 377 | |
8a920568 HG |
378 | mutex_lock(&bcm_device_lock); |
379 | ||
33cd149e | 380 | if (hu->serdev) { |
8bfa7e1e LW |
381 | err = serdev_device_open(hu->serdev); |
382 | if (err) | |
383 | goto err_free; | |
384 | ||
8a920568 | 385 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
386 | goto out; |
387 | } | |
388 | ||
95065a61 JH |
389 | if (!hu->tty->dev) |
390 | goto out; | |
391 | ||
0395ffc1 FD |
392 | list_for_each(p, &bcm_device_list) { |
393 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
394 | ||
395 | /* Retrieve saved bcm_device based on parent of the | |
396 | * platform device (saved during device probe) and | |
397 | * parent of tty device used by hci_uart | |
398 | */ | |
c0d3ce58 | 399 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 400 | bcm->dev = dev; |
b7a622a2 | 401 | #ifdef CONFIG_PM |
118612fb FD |
402 | dev->hu = hu; |
403 | #endif | |
0395ffc1 FD |
404 | break; |
405 | } | |
406 | } | |
407 | ||
95065a61 | 408 | out: |
8a920568 HG |
409 | if (bcm->dev) { |
410 | hu->init_speed = bcm->dev->init_speed; | |
411 | hu->oper_speed = bcm->dev->oper_speed; | |
8bfa7e1e LW |
412 | err = bcm_gpio_set_power(bcm->dev, true); |
413 | if (err) | |
414 | goto err_unset_hu; | |
8a920568 HG |
415 | } |
416 | ||
417 | mutex_unlock(&bcm_device_lock); | |
bdd8818e | 418 | return 0; |
8bfa7e1e LW |
419 | |
420 | err_unset_hu: | |
8c6b8eda HG |
421 | if (hu->serdev) |
422 | serdev_device_close(hu->serdev); | |
8bfa7e1e | 423 | #ifdef CONFIG_PM |
8c6b8eda HG |
424 | else |
425 | bcm->dev->hu = NULL; | |
8bfa7e1e LW |
426 | #endif |
427 | err_free: | |
428 | mutex_unlock(&bcm_device_lock); | |
429 | hu->priv = NULL; | |
430 | kfree(bcm); | |
431 | return err; | |
bdd8818e MH |
432 | } |
433 | ||
434 | static int bcm_close(struct hci_uart *hu) | |
435 | { | |
436 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 437 | struct bcm_device *bdev = NULL; |
8bfa7e1e | 438 | int err; |
bdd8818e | 439 | |
65ad07c9 | 440 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 441 | |
0395ffc1 | 442 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 443 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
444 | |
445 | if (hu->serdev) { | |
446 | serdev_device_close(hu->serdev); | |
447 | bdev = serdev_device_get_drvdata(hu->serdev); | |
448 | } else if (bcm_device_exists(bcm->dev)) { | |
449 | bdev = bcm->dev; | |
450 | #ifdef CONFIG_PM | |
451 | bdev->hu = NULL; | |
452 | #endif | |
453 | } | |
454 | ||
455 | if (bdev) { | |
6d83f1ee | 456 | if (IS_ENABLED(CONFIG_PM) && bdev->irq > 0) { |
c0d3ce58 HG |
457 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
458 | device_init_wakeup(bdev->dev, false); | |
f4cf6b7e | 459 | pm_runtime_disable(bdev->dev); |
6cc4396c | 460 | } |
54ba69f9 | 461 | |
8bfa7e1e LW |
462 | err = bcm_gpio_set_power(bdev, false); |
463 | if (err) | |
464 | bt_dev_err(hu->hdev, "Failed to power down"); | |
465 | else | |
466 | pm_runtime_set_suspended(bdev->dev); | |
118612fb | 467 | } |
bb3ea16a | 468 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 469 | |
bdd8818e MH |
470 | skb_queue_purge(&bcm->txq); |
471 | kfree_skb(bcm->rx_skb); | |
472 | kfree(bcm); | |
473 | ||
474 | hu->priv = NULL; | |
475 | return 0; | |
476 | } | |
477 | ||
478 | static int bcm_flush(struct hci_uart *hu) | |
479 | { | |
480 | struct bcm_data *bcm = hu->priv; | |
481 | ||
65ad07c9 | 482 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
483 | |
484 | skb_queue_purge(&bcm->txq); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | static int bcm_setup(struct hci_uart *hu) | |
490 | { | |
6cc4396c | 491 | struct bcm_data *bcm = hu->priv; |
6be09b48 FD |
492 | char fw_name[64]; |
493 | const struct firmware *fw; | |
960ef1d7 | 494 | unsigned int speed; |
6be09b48 FD |
495 | int err; |
496 | ||
65ad07c9 | 497 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 498 | |
075e1f5e | 499 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
500 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
501 | ||
6be09b48 FD |
502 | err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name)); |
503 | if (err) | |
504 | return err; | |
505 | ||
506 | err = request_firmware(&fw, fw_name, &hu->hdev->dev); | |
507 | if (err < 0) { | |
65ad07c9 | 508 | bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name); |
6be09b48 FD |
509 | return 0; |
510 | } | |
511 | ||
512 | err = btbcm_patchram(hu->hdev, fw); | |
513 | if (err) { | |
65ad07c9 | 514 | bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err); |
6be09b48 FD |
515 | goto finalize; |
516 | } | |
517 | ||
960ef1d7 FD |
518 | /* Init speed if any */ |
519 | if (hu->init_speed) | |
520 | speed = hu->init_speed; | |
521 | else if (hu->proto->init_speed) | |
522 | speed = hu->proto->init_speed; | |
523 | else | |
524 | speed = 0; | |
525 | ||
526 | if (speed) | |
33cd149e | 527 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
528 | |
529 | /* Operational speed if any */ | |
530 | if (hu->oper_speed) | |
531 | speed = hu->oper_speed; | |
532 | else if (hu->proto->oper_speed) | |
533 | speed = hu->proto->oper_speed; | |
534 | else | |
535 | speed = 0; | |
536 | ||
537 | if (speed) { | |
538 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 539 | if (!err) |
33cd149e | 540 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
541 | } |
542 | ||
6be09b48 FD |
543 | finalize: |
544 | release_firmware(fw); | |
545 | ||
546 | err = btbcm_finalize(hu->hdev); | |
6cc4396c FD |
547 | if (err) |
548 | return err; | |
549 | ||
cdd24a20 | 550 | if (!bcm_request_irq(bcm)) |
6cc4396c | 551 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
552 | |
553 | return err; | |
bdd8818e MH |
554 | } |
555 | ||
94c58132 MH |
556 | #define BCM_RECV_LM_DIAG \ |
557 | .type = BCM_LM_DIAG_PKT, \ | |
558 | .hlen = BCM_LM_DIAG_SIZE, \ | |
559 | .loff = 0, \ | |
560 | .lsize = 0, \ | |
561 | .maxlen = BCM_LM_DIAG_SIZE | |
562 | ||
01d5e44a MH |
563 | #define BCM_RECV_NULL \ |
564 | .type = BCM_NULL_PKT, \ | |
565 | .hlen = BCM_NULL_SIZE, \ | |
566 | .loff = 0, \ | |
567 | .lsize = 0, \ | |
568 | .maxlen = BCM_NULL_SIZE | |
569 | ||
79b8df93 | 570 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
571 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
572 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
573 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
574 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, | |
01d5e44a | 575 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
79b8df93 MH |
576 | }; |
577 | ||
bdd8818e MH |
578 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
579 | { | |
580 | struct bcm_data *bcm = hu->priv; | |
581 | ||
582 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
583 | return -EUNATCH; | |
584 | ||
79b8df93 MH |
585 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
586 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
587 | if (IS_ERR(bcm->rx_skb)) { |
588 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 589 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 590 | bcm->rx_skb = NULL; |
bdd8818e | 591 | return err; |
e88ab30d FD |
592 | } else if (!bcm->rx_skb) { |
593 | /* Delay auto-suspend when receiving completed packet */ | |
594 | mutex_lock(&bcm_device_lock); | |
b09c6152 HG |
595 | if (bcm->dev && bcm_device_exists(bcm->dev)) { |
596 | pm_runtime_get(bcm->dev->dev); | |
597 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
598 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
599 | } | |
e88ab30d | 600 | mutex_unlock(&bcm_device_lock); |
bdd8818e MH |
601 | } |
602 | ||
603 | return count; | |
604 | } | |
605 | ||
606 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
607 | { | |
608 | struct bcm_data *bcm = hu->priv; | |
609 | ||
65ad07c9 | 610 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
611 | |
612 | /* Prepend skb with frame type */ | |
618e8bc2 | 613 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
614 | skb_queue_tail(&bcm->txq, skb); |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
620 | { | |
621 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
622 | struct sk_buff *skb = NULL; |
623 | struct bcm_device *bdev = NULL; | |
624 | ||
625 | mutex_lock(&bcm_device_lock); | |
626 | ||
627 | if (bcm_device_exists(bcm->dev)) { | |
628 | bdev = bcm->dev; | |
c0d3ce58 | 629 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
630 | /* Shall be resumed here */ |
631 | } | |
632 | ||
633 | skb = skb_dequeue(&bcm->txq); | |
634 | ||
635 | if (bdev) { | |
c0d3ce58 HG |
636 | pm_runtime_mark_last_busy(bdev->dev); |
637 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 638 | } |
bdd8818e | 639 | |
e88ab30d FD |
640 | mutex_unlock(&bcm_device_lock); |
641 | ||
642 | return skb; | |
bdd8818e MH |
643 | } |
644 | ||
b7a622a2 FD |
645 | #ifdef CONFIG_PM |
646 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 647 | { |
78277d73 | 648 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 649 | int err; |
118612fb | 650 | |
b7a622a2 | 651 | bt_dev_dbg(bdev, ""); |
917522aa | 652 | |
b7a622a2 | 653 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
654 | hci_uart_set_flow_control(bdev->hu, true); |
655 | ||
b7a622a2 | 656 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
657 | bdev->is_suspended = true; |
658 | } | |
659 | ||
660 | /* Suspend the device */ | |
8bfa7e1e LW |
661 | err = bdev->set_device_wakeup(bdev, false); |
662 | if (err) { | |
663 | if (bdev->is_suspended && bdev->hu) { | |
664 | bdev->is_suspended = false; | |
665 | hci_uart_set_flow_control(bdev->hu, false); | |
666 | } | |
667 | return -EBUSY; | |
668 | } | |
669 | ||
3e81a4ca | 670 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); |
e4b9e5b8 | 671 | msleep(15); |
118612fb | 672 | |
b7a622a2 FD |
673 | return 0; |
674 | } | |
675 | ||
676 | static int bcm_resume_device(struct device *dev) | |
677 | { | |
78277d73 | 678 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 679 | int err; |
b7a622a2 FD |
680 | |
681 | bt_dev_dbg(bdev, ""); | |
682 | ||
8bfa7e1e LW |
683 | err = bdev->set_device_wakeup(bdev, true); |
684 | if (err) { | |
685 | dev_err(dev, "Failed to power up\n"); | |
686 | return err; | |
687 | } | |
688 | ||
3e81a4ca | 689 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); |
e4b9e5b8 | 690 | msleep(15); |
b7a622a2 FD |
691 | |
692 | /* When this executes, the device has woken up already */ | |
693 | if (bdev->is_suspended && bdev->hu) { | |
694 | bdev->is_suspended = false; | |
695 | ||
696 | hci_uart_set_flow_control(bdev->hu, false); | |
697 | } | |
698 | ||
699 | return 0; | |
700 | } | |
701 | #endif | |
702 | ||
703 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 704 | /* suspend callback */ |
b7a622a2 FD |
705 | static int bcm_suspend(struct device *dev) |
706 | { | |
78277d73 | 707 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
708 | int error; |
709 | ||
710 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
711 | ||
8a920568 HG |
712 | /* |
713 | * When used with a device instantiated as platform_device, bcm_suspend | |
714 | * can be called at any time as long as the platform device is bound, | |
715 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
716 | * and device_wake-up GPIO. |
717 | */ | |
718 | mutex_lock(&bcm_device_lock); | |
719 | ||
720 | if (!bdev->hu) | |
721 | goto unlock; | |
722 | ||
e88ab30d FD |
723 | if (pm_runtime_active(dev)) |
724 | bcm_suspend_device(dev); | |
b7a622a2 | 725 | |
4a59f1fa | 726 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
727 | error = enable_irq_wake(bdev->irq); |
728 | if (!error) | |
729 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
730 | } | |
731 | ||
917522aa | 732 | unlock: |
bb3ea16a | 733 | mutex_unlock(&bcm_device_lock); |
917522aa | 734 | |
118612fb FD |
735 | return 0; |
736 | } | |
737 | ||
8a920568 | 738 | /* resume callback */ |
118612fb FD |
739 | static int bcm_resume(struct device *dev) |
740 | { | |
78277d73 | 741 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 742 | int err = 0; |
118612fb | 743 | |
65ad07c9 | 744 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 745 | |
8a920568 HG |
746 | /* |
747 | * When used with a device instantiated as platform_device, bcm_resume | |
748 | * can be called at any time as long as platform device is bound, | |
749 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
750 | * and device_wake-up GPIO. |
751 | */ | |
bb3ea16a | 752 | mutex_lock(&bcm_device_lock); |
917522aa FD |
753 | |
754 | if (!bdev->hu) | |
755 | goto unlock; | |
756 | ||
4a59f1fa | 757 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
758 | disable_irq_wake(bdev->irq); |
759 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
760 | } | |
761 | ||
8bfa7e1e | 762 | err = bcm_resume_device(dev); |
118612fb | 763 | |
917522aa | 764 | unlock: |
bb3ea16a | 765 | mutex_unlock(&bcm_device_lock); |
917522aa | 766 | |
8bfa7e1e LW |
767 | if (!err) { |
768 | pm_runtime_disable(dev); | |
769 | pm_runtime_set_active(dev); | |
770 | pm_runtime_enable(dev); | |
771 | } | |
e88ab30d | 772 | |
118612fb FD |
773 | return 0; |
774 | } | |
775 | #endif | |
776 | ||
9644e6b9 HG |
777 | static const struct acpi_gpio_params first_gpio = { 0, 0, false }; |
778 | static const struct acpi_gpio_params second_gpio = { 1, 0, false }; | |
779 | static const struct acpi_gpio_params third_gpio = { 2, 0, false }; | |
89ab37b4 DD |
780 | |
781 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
9644e6b9 HG |
782 | { "device-wakeup-gpios", &first_gpio, 1 }, |
783 | { "shutdown-gpios", &second_gpio, 1 }, | |
784 | { "host-wakeup-gpios", &third_gpio, 1 }, | |
89ab37b4 DD |
785 | { }, |
786 | }; | |
787 | ||
89ab37b4 | 788 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { |
9644e6b9 HG |
789 | { "host-wakeup-gpios", &first_gpio, 1 }, |
790 | { "device-wakeup-gpios", &second_gpio, 1 }, | |
791 | { "shutdown-gpios", &third_gpio, 1 }, | |
0395ffc1 FD |
792 | { }, |
793 | }; | |
794 | ||
50d78bcf | 795 | #ifdef CONFIG_ACPI |
5cebdfea | 796 | /* IRQ polarity of some chipsets are not defined correctly in ACPI table. */ |
227630cc | 797 | static const struct dmi_system_id bcm_active_low_irq_dmi_table[] = { |
5e2bd93b JB |
798 | { /* Handle ThinkPad 8 tablets with BCM2E55 chipset ACPI ID */ |
799 | .ident = "Lenovo ThinkPad 8", | |
800 | .matches = { | |
801 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "LENOVO"), | |
802 | DMI_EXACT_MATCH(DMI_PRODUCT_VERSION, "ThinkPad 8"), | |
803 | }, | |
5e2bd93b | 804 | }, |
1bdb68b2 IM |
805 | { |
806 | .ident = "MINIX Z83-4", | |
807 | .matches = { | |
808 | DMI_EXACT_MATCH(DMI_SYS_VENDOR, "MINIX"), | |
809 | DMI_MATCH(DMI_PRODUCT_NAME, "Z83-4"), | |
810 | }, | |
811 | }, | |
5cebdfea FD |
812 | { } |
813 | }; | |
814 | ||
ae056908 FD |
815 | static int bcm_resource(struct acpi_resource *ares, void *data) |
816 | { | |
817 | struct bcm_device *dev = data; | |
6cc4396c FD |
818 | struct acpi_resource_extended_irq *irq; |
819 | struct acpi_resource_gpio *gpio; | |
820 | struct acpi_resource_uart_serialbus *sb; | |
821 | ||
822 | switch (ares->type) { | |
823 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
824 | irq = &ares->data.extended_irq; | |
bb5208b3 HG |
825 | if (irq->polarity != ACPI_ACTIVE_LOW) |
826 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
827 | dev->irq_active_low = true; | |
6cc4396c FD |
828 | break; |
829 | ||
830 | case ACPI_RESOURCE_TYPE_GPIO: | |
831 | gpio = &ares->data.gpio; | |
832 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) | |
227630cc | 833 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
6cc4396c FD |
834 | break; |
835 | ||
836 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 837 | sb = &ares->data.uart_serial_bus; |
74183a1c | 838 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 839 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
840 | dev->oper_speed = 4000000; |
841 | } | |
6cc4396c FD |
842 | break; |
843 | ||
844 | default: | |
845 | break; | |
ae056908 FD |
846 | } |
847 | ||
9d54fd6a | 848 | return 0; |
ae056908 | 849 | } |
4c33162c LW |
850 | |
851 | static int bcm_apple_set_device_wakeup(struct bcm_device *dev, bool awake) | |
852 | { | |
853 | if (ACPI_FAILURE(acpi_execute_simple_method(dev->btlp, NULL, !awake))) | |
854 | return -EIO; | |
855 | ||
856 | return 0; | |
857 | } | |
858 | ||
859 | static int bcm_apple_set_shutdown(struct bcm_device *dev, bool powered) | |
860 | { | |
861 | if (ACPI_FAILURE(acpi_evaluate_object(powered ? dev->btpu : dev->btpd, | |
862 | NULL, NULL, NULL))) | |
863 | return -EIO; | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | static int bcm_apple_get_resources(struct bcm_device *dev) | |
869 | { | |
870 | struct acpi_device *adev = ACPI_COMPANION(dev->dev); | |
871 | const union acpi_object *obj; | |
872 | ||
873 | if (!adev || | |
874 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTLP", &dev->btlp)) || | |
875 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPU", &dev->btpu)) || | |
876 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPD", &dev->btpd))) | |
877 | return -ENODEV; | |
878 | ||
879 | if (!acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, &obj) && | |
880 | obj->buffer.length == 8) | |
881 | dev->init_speed = *(u64 *)obj->buffer.pointer; | |
882 | ||
883 | dev->set_device_wakeup = bcm_apple_set_device_wakeup; | |
884 | dev->set_shutdown = bcm_apple_set_shutdown; | |
885 | ||
886 | return 0; | |
887 | } | |
888 | #else | |
889 | static inline int bcm_apple_get_resources(struct bcm_device *dev) | |
890 | { | |
891 | return -EOPNOTSUPP; | |
892 | } | |
212d7183 | 893 | #endif /* CONFIG_ACPI */ |
ae056908 | 894 | |
8353b4a6 LW |
895 | static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake) |
896 | { | |
fb2d466b | 897 | gpiod_set_value_cansleep(dev->device_wakeup, awake); |
8353b4a6 LW |
898 | return 0; |
899 | } | |
900 | ||
901 | static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered) | |
902 | { | |
fb2d466b | 903 | gpiod_set_value_cansleep(dev->shutdown, powered); |
8353b4a6 LW |
904 | return 0; |
905 | } | |
906 | ||
42ef18f0 | 907 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 908 | { |
c0d3ce58 | 909 | dev->name = dev_name(dev->dev); |
0395ffc1 | 910 | |
4c33162c LW |
911 | if (x86_apple_machine && !bcm_apple_get_resources(dev)) |
912 | return 0; | |
913 | ||
c0d3ce58 | 914 | dev->clk = devm_clk_get(dev->dev, NULL); |
89ab37b4 | 915 | |
ab2f336c SW |
916 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
917 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
918 | if (IS_ERR(dev->device_wakeup)) |
919 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 920 | |
ab2f336c SW |
921 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
922 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
923 | if (IS_ERR(dev->shutdown)) |
924 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 925 | |
8353b4a6 LW |
926 | dev->set_device_wakeup = bcm_gpio_set_device_wakeup; |
927 | dev->set_shutdown = bcm_gpio_set_shutdown; | |
928 | ||
6cc4396c | 929 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
930 | if (dev->irq <= 0) { |
931 | struct gpio_desc *gpio; | |
932 | ||
c0d3ce58 | 933 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
934 | GPIOD_IN); |
935 | if (IS_ERR(gpio)) | |
936 | return PTR_ERR(gpio); | |
937 | ||
938 | dev->irq = gpiod_to_irq(gpio); | |
939 | } | |
940 | ||
5954cdf1 | 941 | dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
942 | return 0; |
943 | } | |
944 | ||
945 | #ifdef CONFIG_ACPI | |
946 | static int bcm_acpi_probe(struct bcm_device *dev) | |
947 | { | |
212d7183 AS |
948 | LIST_HEAD(resources); |
949 | const struct dmi_system_id *dmi_id; | |
950 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; | |
951 | const struct acpi_device_id *id; | |
9d54fd6a | 952 | struct resource_entry *entry; |
212d7183 AS |
953 | int ret; |
954 | ||
955 | /* Retrieve GPIO data */ | |
c0d3ce58 | 956 | id = acpi_match_device(dev->dev->driver->acpi_match_table, dev->dev); |
212d7183 AS |
957 | if (id) |
958 | gpio_mapping = (const struct acpi_gpio_mapping *) id->driver_data; | |
959 | ||
c0d3ce58 | 960 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); |
212d7183 AS |
961 | if (ret) |
962 | return ret; | |
963 | ||
ae056908 | 964 | /* Retrieve UART ACPI info */ |
c0d3ce58 | 965 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 966 | &resources, bcm_resource, dev); |
5be00284 JN |
967 | if (ret < 0) |
968 | return ret; | |
9d54fd6a HG |
969 | |
970 | resource_list_for_each_entry(entry, &resources) { | |
971 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
972 | dev->irq = entry->res->start; | |
973 | break; | |
974 | } | |
975 | } | |
09dbf1b7 | 976 | acpi_dev_free_resource_list(&resources); |
ae056908 | 977 | |
e09070c5 HG |
978 | if (irq_polarity != -1) { |
979 | dev->irq_active_low = irq_polarity; | |
980 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
981 | dev->irq_active_low ? "low" : "high"); | |
982 | } else { | |
983 | dmi_id = dmi_first_match(bcm_active_low_irq_dmi_table); | |
984 | if (dmi_id) { | |
985 | dev_warn(dev->dev, "%s: Overwriting IRQ polarity to active low", | |
986 | dmi_id->ident); | |
987 | dev->irq_active_low = true; | |
988 | } | |
5cebdfea FD |
989 | } |
990 | ||
0395ffc1 FD |
991 | return 0; |
992 | } | |
50d78bcf FD |
993 | #else |
994 | static int bcm_acpi_probe(struct bcm_device *dev) | |
995 | { | |
996 | return -EINVAL; | |
997 | } | |
998 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 999 | |
8a920568 HG |
1000 | static int bcm_of_probe(struct bcm_device *bdev) |
1001 | { | |
1002 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
1003 | return 0; | |
1004 | } | |
1005 | ||
0395ffc1 FD |
1006 | static int bcm_probe(struct platform_device *pdev) |
1007 | { | |
1008 | struct bcm_device *dev; | |
0395ffc1 FD |
1009 | int ret; |
1010 | ||
1011 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
1012 | if (!dev) | |
1013 | return -ENOMEM; | |
1014 | ||
c0d3ce58 | 1015 | dev->dev = &pdev->dev; |
4a56f891 | 1016 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 1017 | |
201762e2 | 1018 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 1019 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
1020 | if (ret) |
1021 | return ret; | |
1022 | } | |
1023 | ||
42ef18f0 | 1024 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
1025 | if (ret) |
1026 | return ret; | |
0395ffc1 FD |
1027 | |
1028 | platform_set_drvdata(pdev, dev); | |
1029 | ||
1030 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
1031 | ||
1032 | /* Place this instance on the device list */ | |
bb3ea16a | 1033 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1034 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 1035 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1036 | |
8bfa7e1e LW |
1037 | ret = bcm_gpio_set_power(dev, false); |
1038 | if (ret) | |
1039 | dev_err(&pdev->dev, "Failed to power down\n"); | |
0395ffc1 FD |
1040 | |
1041 | return 0; | |
1042 | } | |
1043 | ||
1044 | static int bcm_remove(struct platform_device *pdev) | |
1045 | { | |
1046 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
1047 | ||
bb3ea16a | 1048 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1049 | list_del(&dev->list); |
bb3ea16a | 1050 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1051 | |
0395ffc1 FD |
1052 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
bdd8818e MH |
1057 | static const struct hci_uart_proto bcm_proto = { |
1058 | .id = HCI_UART_BCM, | |
143f0a28 | 1059 | .name = "Broadcom", |
aee61f7a | 1060 | .manufacturer = 15, |
61b2fc2b | 1061 | .init_speed = 115200, |
bdd8818e MH |
1062 | .open = bcm_open, |
1063 | .close = bcm_close, | |
1064 | .flush = bcm_flush, | |
1065 | .setup = bcm_setup, | |
61b2fc2b | 1066 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
1067 | .recv = bcm_recv, |
1068 | .enqueue = bcm_enqueue, | |
1069 | .dequeue = bcm_dequeue, | |
1070 | }; | |
1071 | ||
0395ffc1 FD |
1072 | #ifdef CONFIG_ACPI |
1073 | static const struct acpi_device_id bcm_acpi_match[] = { | |
89ab37b4 | 1074 | { "BCM2E1A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
4063cafa | 1075 | { "BCM2E38", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
89ab37b4 DD |
1076 | { "BCM2E39", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
1077 | { "BCM2E3A", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1078 | { "BCM2E3D", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1079 | { "BCM2E3F", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1080 | { "BCM2E40", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1081 | { "BCM2E54", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1082 | { "BCM2E55", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1083 | { "BCM2E64", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1084 | { "BCM2E65", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1085 | { "BCM2E67", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1086 | { "BCM2E71", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
c23fae11 | 1087 | { "BCM2E72", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
4063cafa | 1088 | { "BCM2E74", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
89ab37b4 DD |
1089 | { "BCM2E7B", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, |
1090 | { "BCM2E7C", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
61d220a6 | 1091 | { "BCM2E7E", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
4063cafa HG |
1092 | { "BCM2E83", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
1093 | { "BCM2E84", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
1094 | { "BCM2E90", (kernel_ulong_t)&acpi_bcm_int_last_gpios }, | |
89ab37b4 DD |
1095 | { "BCM2E95", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
1096 | { "BCM2E96", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, | |
1bdb68b2 | 1097 | { "BCM2EA4", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
4063cafa | 1098 | { "BCM2EAA", (kernel_ulong_t)&acpi_bcm_int_first_gpios }, |
0395ffc1 FD |
1099 | { }, |
1100 | }; | |
1101 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
1102 | #endif | |
1103 | ||
8a920568 | 1104 | /* suspend and resume callbacks */ |
e88ab30d FD |
1105 | static const struct dev_pm_ops bcm_pm_ops = { |
1106 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
1107 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
1108 | }; | |
118612fb | 1109 | |
0395ffc1 FD |
1110 | static struct platform_driver bcm_driver = { |
1111 | .probe = bcm_probe, | |
1112 | .remove = bcm_remove, | |
1113 | .driver = { | |
1114 | .name = "hci_bcm", | |
1115 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 1116 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
1117 | }, |
1118 | }; | |
1119 | ||
33cd149e LP |
1120 | static int bcm_serdev_probe(struct serdev_device *serdev) |
1121 | { | |
8a920568 | 1122 | struct bcm_device *bcmdev; |
33cd149e LP |
1123 | int err; |
1124 | ||
1125 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
1126 | if (!bcmdev) | |
1127 | return -ENOMEM; | |
1128 | ||
8a920568 | 1129 | bcmdev->dev = &serdev->dev; |
81a19053 | 1130 | #ifdef CONFIG_PM |
8a920568 | 1131 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1132 | #endif |
8a920568 | 1133 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1134 | serdev_device_set_drvdata(serdev, bcmdev); |
1135 | ||
8a920568 HG |
1136 | if (has_acpi_companion(&serdev->dev)) |
1137 | err = bcm_acpi_probe(bcmdev); | |
1138 | else | |
1139 | err = bcm_of_probe(bcmdev); | |
1140 | if (err) | |
1141 | return err; | |
33cd149e | 1142 | |
8a920568 HG |
1143 | err = bcm_get_resources(bcmdev); |
1144 | if (err) | |
1145 | return err; | |
1146 | ||
f3863f1d MH |
1147 | if (!bcmdev->shutdown) { |
1148 | dev_warn(&serdev->dev, | |
1149 | "No reset resource, using default baud rate\n"); | |
1150 | bcmdev->oper_speed = bcmdev->init_speed; | |
1151 | } | |
1152 | ||
8bfa7e1e LW |
1153 | err = bcm_gpio_set_power(bcmdev, false); |
1154 | if (err) | |
1155 | dev_err(&serdev->dev, "Failed to power down\n"); | |
8a920568 HG |
1156 | |
1157 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); | |
33cd149e LP |
1158 | } |
1159 | ||
1160 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1161 | { | |
8a920568 | 1162 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1163 | |
8a920568 | 1164 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1165 | } |
1166 | ||
1167 | #ifdef CONFIG_OF | |
1168 | static const struct of_device_id bcm_bluetooth_of_match[] = { | |
1169 | { .compatible = "brcm,bcm43438-bt" }, | |
1170 | { }, | |
1171 | }; | |
1172 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1173 | #endif | |
1174 | ||
1175 | static struct serdev_device_driver bcm_serdev_driver = { | |
1176 | .probe = bcm_serdev_probe, | |
1177 | .remove = bcm_serdev_remove, | |
1178 | .driver = { | |
1179 | .name = "hci_uart_bcm", | |
1180 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1181 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1182 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1183 | }, |
1184 | }; | |
1185 | ||
bdd8818e MH |
1186 | int __init bcm_init(void) |
1187 | { | |
33cd149e LP |
1188 | /* For now, we need to keep both platform device |
1189 | * driver (ACPI generated) and serdev driver (DT). | |
1190 | */ | |
0395ffc1 | 1191 | platform_driver_register(&bcm_driver); |
33cd149e | 1192 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1193 | |
bdd8818e MH |
1194 | return hci_uart_register_proto(&bcm_proto); |
1195 | } | |
1196 | ||
1197 | int __exit bcm_deinit(void) | |
1198 | { | |
0395ffc1 | 1199 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1200 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1201 | |
bdd8818e MH |
1202 | return hci_uart_unregister_proto(&bcm_proto); |
1203 | } |