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; | |
a4de1567 HG |
101 | int gpio_count; |
102 | int gpio_int_idx; | |
4c33162c | 103 | #endif |
0395ffc1 FD |
104 | |
105 | struct clk *clk; | |
106 | bool clk_enabled; | |
ae056908 FD |
107 | |
108 | u32 init_speed; | |
74183a1c | 109 | u32 oper_speed; |
6cc4396c | 110 | int irq; |
227630cc | 111 | bool irq_active_low; |
118612fb | 112 | |
b7a622a2 | 113 | #ifdef CONFIG_PM |
118612fb | 114 | struct hci_uart *hu; |
b7c2abac | 115 | bool is_suspended; |
118612fb | 116 | #endif |
0395ffc1 FD |
117 | }; |
118 | ||
33cd149e | 119 | /* generic bcm uart resources */ |
bdd8818e | 120 | struct bcm_data { |
0395ffc1 FD |
121 | struct sk_buff *rx_skb; |
122 | struct sk_buff_head txq; | |
123 | ||
124 | struct bcm_device *dev; | |
bdd8818e MH |
125 | }; |
126 | ||
0395ffc1 | 127 | /* List of BCM BT UART devices */ |
bb3ea16a | 128 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
129 | static LIST_HEAD(bcm_device_list); |
130 | ||
e09070c5 HG |
131 | static int irq_polarity = -1; |
132 | module_param(irq_polarity, int, 0444); | |
133 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
134 | ||
33cd149e LP |
135 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
136 | { | |
137 | if (hu->serdev) | |
138 | serdev_device_set_baudrate(hu->serdev, speed); | |
139 | else | |
140 | hci_uart_set_baudrate(hu, speed); | |
141 | } | |
142 | ||
61b2fc2b FD |
143 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
144 | { | |
145 | struct hci_dev *hdev = hu->hdev; | |
146 | struct sk_buff *skb; | |
147 | struct bcm_update_uart_baud_rate param; | |
148 | ||
149 | if (speed > 3000000) { | |
150 | struct bcm_write_uart_clock_setting clock; | |
151 | ||
152 | clock.type = BCM_UART_CLOCK_48MHZ; | |
153 | ||
65ad07c9 | 154 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
155 | |
156 | /* This Broadcom specific command changes the UART's controller | |
157 | * clock for baud rate > 3000000. | |
158 | */ | |
159 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
160 | if (IS_ERR(skb)) { | |
161 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
162 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
163 | err); | |
61b2fc2b FD |
164 | return err; |
165 | } | |
166 | ||
167 | kfree_skb(skb); | |
168 | } | |
169 | ||
65ad07c9 | 170 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
171 | |
172 | param.zero = cpu_to_le16(0); | |
173 | param.baud_rate = cpu_to_le32(speed); | |
174 | ||
175 | /* This Broadcom specific command changes the UART's controller baud | |
176 | * rate. | |
177 | */ | |
178 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
179 | HCI_INIT_TIMEOUT); | |
180 | if (IS_ERR(skb)) { | |
181 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
182 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
183 | err); | |
61b2fc2b FD |
184 | return err; |
185 | } | |
186 | ||
187 | kfree_skb(skb); | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
917522aa | 192 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
193 | static bool bcm_device_exists(struct bcm_device *device) |
194 | { | |
195 | struct list_head *p; | |
196 | ||
81a19053 | 197 | #ifdef CONFIG_PM |
8a920568 HG |
198 | /* Devices using serdev always exist */ |
199 | if (device && device->hu && device->hu->serdev) | |
200 | return true; | |
81a19053 | 201 | #endif |
8a920568 | 202 | |
0395ffc1 FD |
203 | list_for_each(p, &bcm_device_list) { |
204 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
205 | ||
206 | if (device == dev) | |
207 | return true; | |
208 | } | |
209 | ||
210 | return false; | |
211 | } | |
212 | ||
213 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
214 | { | |
8bfa7e1e | 215 | int err; |
0395ffc1 | 216 | |
8bfa7e1e LW |
217 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) { |
218 | err = clk_prepare_enable(dev->clk); | |
219 | if (err) | |
220 | return err; | |
221 | } | |
222 | ||
223 | err = dev->set_shutdown(dev, powered); | |
224 | if (err) | |
225 | goto err_clk_disable; | |
226 | ||
227 | err = dev->set_device_wakeup(dev, powered); | |
228 | if (err) | |
229 | goto err_revert_shutdown; | |
0395ffc1 FD |
230 | |
231 | if (!powered && !IS_ERR(dev->clk) && dev->clk_enabled) | |
730ce397 | 232 | clk_disable_unprepare(dev->clk); |
0395ffc1 FD |
233 | |
234 | dev->clk_enabled = powered; | |
235 | ||
236 | return 0; | |
8bfa7e1e LW |
237 | |
238 | err_revert_shutdown: | |
239 | dev->set_shutdown(dev, !powered); | |
240 | err_clk_disable: | |
241 | if (powered && !IS_ERR(dev->clk) && !dev->clk_enabled) | |
242 | clk_disable_unprepare(dev->clk); | |
243 | return err; | |
0395ffc1 FD |
244 | } |
245 | ||
b7a622a2 | 246 | #ifdef CONFIG_PM |
6cc4396c FD |
247 | static irqreturn_t bcm_host_wake(int irq, void *data) |
248 | { | |
249 | struct bcm_device *bdev = data; | |
250 | ||
251 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
252 | ||
b09c6152 HG |
253 | pm_runtime_get(bdev->dev); |
254 | pm_runtime_mark_last_busy(bdev->dev); | |
255 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 256 | |
6cc4396c FD |
257 | return IRQ_HANDLED; |
258 | } | |
259 | ||
260 | static int bcm_request_irq(struct bcm_data *bcm) | |
261 | { | |
262 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 263 | int err; |
6cc4396c | 264 | |
6cc4396c FD |
265 | mutex_lock(&bcm_device_lock); |
266 | if (!bcm_device_exists(bdev)) { | |
267 | err = -ENODEV; | |
268 | goto unlock; | |
269 | } | |
270 | ||
98dc77d5 LP |
271 | if (bdev->irq <= 0) { |
272 | err = -EOPNOTSUPP; | |
273 | goto unlock; | |
274 | } | |
6cc4396c | 275 | |
c0d3ce58 | 276 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
277 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
278 | IRQF_TRIGGER_RISING, | |
279 | "host_wake", bdev); | |
4dc27330 LW |
280 | if (err) { |
281 | bdev->irq = err; | |
98dc77d5 | 282 | goto unlock; |
4dc27330 | 283 | } |
e88ab30d | 284 | |
c0d3ce58 | 285 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 286 | |
c0d3ce58 | 287 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 288 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
289 | pm_runtime_use_autosuspend(bdev->dev); |
290 | pm_runtime_set_active(bdev->dev); | |
291 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
292 | |
293 | unlock: | |
294 | mutex_unlock(&bcm_device_lock); | |
295 | ||
296 | return err; | |
297 | } | |
298 | ||
299 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
300 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
301 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
302 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
303 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
304 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
305 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 306 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
307 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
308 | /* Irrelevant USB flags */ | |
309 | .usb_auto_sleep = 0, | |
310 | .usb_resume_timeout = 0, | |
ff875960 | 311 | .break_to_host = 0, |
e07c99b0 | 312 | .pulsed_host_wake = 1, |
6cc4396c FD |
313 | }; |
314 | ||
315 | static int bcm_setup_sleep(struct hci_uart *hu) | |
316 | { | |
317 | struct bcm_data *bcm = hu->priv; | |
318 | struct sk_buff *skb; | |
319 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
320 | ||
227630cc | 321 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
322 | |
323 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
324 | &sleep_params, HCI_INIT_TIMEOUT); | |
325 | if (IS_ERR(skb)) { | |
326 | int err = PTR_ERR(skb); | |
327 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
328 | return err; | |
329 | } | |
330 | kfree_skb(skb); | |
331 | ||
332 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
333 | ||
334 | return 0; | |
335 | } | |
336 | #else | |
337 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
338 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
339 | #endif | |
340 | ||
075e1f5e MH |
341 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
342 | { | |
343 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
344 | struct bcm_data *bcm = hu->priv; | |
345 | struct sk_buff *skb; | |
346 | ||
347 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
348 | return -ENETDOWN; | |
349 | ||
350 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
351 | if (!skb) |
352 | return -ENOMEM; | |
075e1f5e | 353 | |
634fef61 JB |
354 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
355 | skb_put_u8(skb, 0xf0); | |
356 | skb_put_u8(skb, enable); | |
075e1f5e MH |
357 | |
358 | skb_queue_tail(&bcm->txq, skb); | |
359 | hci_uart_tx_wakeup(hu); | |
360 | ||
361 | return 0; | |
362 | } | |
363 | ||
bdd8818e MH |
364 | static int bcm_open(struct hci_uart *hu) |
365 | { | |
366 | struct bcm_data *bcm; | |
0395ffc1 | 367 | struct list_head *p; |
8bfa7e1e | 368 | int err; |
bdd8818e | 369 | |
65ad07c9 | 370 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
371 | |
372 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); | |
373 | if (!bcm) | |
374 | return -ENOMEM; | |
375 | ||
376 | skb_queue_head_init(&bcm->txq); | |
377 | ||
378 | hu->priv = bcm; | |
0395ffc1 | 379 | |
8a920568 HG |
380 | mutex_lock(&bcm_device_lock); |
381 | ||
33cd149e | 382 | if (hu->serdev) { |
8bfa7e1e LW |
383 | err = serdev_device_open(hu->serdev); |
384 | if (err) | |
385 | goto err_free; | |
386 | ||
8a920568 | 387 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
388 | goto out; |
389 | } | |
390 | ||
95065a61 JH |
391 | if (!hu->tty->dev) |
392 | goto out; | |
393 | ||
0395ffc1 FD |
394 | list_for_each(p, &bcm_device_list) { |
395 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
396 | ||
397 | /* Retrieve saved bcm_device based on parent of the | |
398 | * platform device (saved during device probe) and | |
399 | * parent of tty device used by hci_uart | |
400 | */ | |
c0d3ce58 | 401 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 402 | bcm->dev = dev; |
b7a622a2 | 403 | #ifdef CONFIG_PM |
118612fb FD |
404 | dev->hu = hu; |
405 | #endif | |
0395ffc1 FD |
406 | break; |
407 | } | |
408 | } | |
409 | ||
95065a61 | 410 | out: |
8a920568 HG |
411 | if (bcm->dev) { |
412 | hu->init_speed = bcm->dev->init_speed; | |
413 | hu->oper_speed = bcm->dev->oper_speed; | |
8bfa7e1e LW |
414 | err = bcm_gpio_set_power(bcm->dev, true); |
415 | if (err) | |
416 | goto err_unset_hu; | |
8a920568 HG |
417 | } |
418 | ||
419 | mutex_unlock(&bcm_device_lock); | |
bdd8818e | 420 | return 0; |
8bfa7e1e LW |
421 | |
422 | err_unset_hu: | |
8c6b8eda HG |
423 | if (hu->serdev) |
424 | serdev_device_close(hu->serdev); | |
8bfa7e1e | 425 | #ifdef CONFIG_PM |
8c6b8eda HG |
426 | else |
427 | bcm->dev->hu = NULL; | |
8bfa7e1e LW |
428 | #endif |
429 | err_free: | |
430 | mutex_unlock(&bcm_device_lock); | |
431 | hu->priv = NULL; | |
432 | kfree(bcm); | |
433 | return err; | |
bdd8818e MH |
434 | } |
435 | ||
436 | static int bcm_close(struct hci_uart *hu) | |
437 | { | |
438 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 439 | struct bcm_device *bdev = NULL; |
8bfa7e1e | 440 | int err; |
bdd8818e | 441 | |
65ad07c9 | 442 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 443 | |
0395ffc1 | 444 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 445 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
446 | |
447 | if (hu->serdev) { | |
448 | serdev_device_close(hu->serdev); | |
449 | bdev = serdev_device_get_drvdata(hu->serdev); | |
450 | } else if (bcm_device_exists(bcm->dev)) { | |
451 | bdev = bcm->dev; | |
452 | #ifdef CONFIG_PM | |
453 | bdev->hu = NULL; | |
454 | #endif | |
455 | } | |
456 | ||
457 | if (bdev) { | |
6d83f1ee | 458 | if (IS_ENABLED(CONFIG_PM) && bdev->irq > 0) { |
c0d3ce58 HG |
459 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
460 | device_init_wakeup(bdev->dev, false); | |
f4cf6b7e | 461 | pm_runtime_disable(bdev->dev); |
6cc4396c | 462 | } |
54ba69f9 | 463 | |
8bfa7e1e LW |
464 | err = bcm_gpio_set_power(bdev, false); |
465 | if (err) | |
466 | bt_dev_err(hu->hdev, "Failed to power down"); | |
467 | else | |
468 | pm_runtime_set_suspended(bdev->dev); | |
118612fb | 469 | } |
bb3ea16a | 470 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 471 | |
bdd8818e MH |
472 | skb_queue_purge(&bcm->txq); |
473 | kfree_skb(bcm->rx_skb); | |
474 | kfree(bcm); | |
475 | ||
476 | hu->priv = NULL; | |
477 | return 0; | |
478 | } | |
479 | ||
480 | static int bcm_flush(struct hci_uart *hu) | |
481 | { | |
482 | struct bcm_data *bcm = hu->priv; | |
483 | ||
65ad07c9 | 484 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
485 | |
486 | skb_queue_purge(&bcm->txq); | |
487 | ||
488 | return 0; | |
489 | } | |
490 | ||
491 | static int bcm_setup(struct hci_uart *hu) | |
492 | { | |
6cc4396c | 493 | struct bcm_data *bcm = hu->priv; |
6be09b48 FD |
494 | char fw_name[64]; |
495 | const struct firmware *fw; | |
960ef1d7 | 496 | unsigned int speed; |
6be09b48 FD |
497 | int err; |
498 | ||
65ad07c9 | 499 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 500 | |
075e1f5e | 501 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
502 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
503 | ||
22ac1916 | 504 | err = btbcm_initialize(hu->hdev, fw_name, sizeof(fw_name), false); |
6be09b48 FD |
505 | if (err) |
506 | return err; | |
507 | ||
508 | err = request_firmware(&fw, fw_name, &hu->hdev->dev); | |
509 | if (err < 0) { | |
65ad07c9 | 510 | bt_dev_info(hu->hdev, "BCM: Patch %s not found", fw_name); |
6be09b48 FD |
511 | return 0; |
512 | } | |
513 | ||
514 | err = btbcm_patchram(hu->hdev, fw); | |
515 | if (err) { | |
65ad07c9 | 516 | bt_dev_info(hu->hdev, "BCM: Patch failed (%d)", err); |
6be09b48 FD |
517 | goto finalize; |
518 | } | |
519 | ||
960ef1d7 FD |
520 | /* Init speed if any */ |
521 | if (hu->init_speed) | |
522 | speed = hu->init_speed; | |
523 | else if (hu->proto->init_speed) | |
524 | speed = hu->proto->init_speed; | |
525 | else | |
526 | speed = 0; | |
527 | ||
528 | if (speed) | |
33cd149e | 529 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
530 | |
531 | /* Operational speed if any */ | |
532 | if (hu->oper_speed) | |
533 | speed = hu->oper_speed; | |
534 | else if (hu->proto->oper_speed) | |
535 | speed = hu->proto->oper_speed; | |
536 | else | |
537 | speed = 0; | |
538 | ||
539 | if (speed) { | |
540 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 541 | if (!err) |
33cd149e | 542 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
543 | } |
544 | ||
6be09b48 FD |
545 | finalize: |
546 | release_firmware(fw); | |
547 | ||
548 | err = btbcm_finalize(hu->hdev); | |
6cc4396c FD |
549 | if (err) |
550 | return err; | |
551 | ||
cdd24a20 | 552 | if (!bcm_request_irq(bcm)) |
6cc4396c | 553 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
554 | |
555 | return err; | |
bdd8818e MH |
556 | } |
557 | ||
94c58132 MH |
558 | #define BCM_RECV_LM_DIAG \ |
559 | .type = BCM_LM_DIAG_PKT, \ | |
560 | .hlen = BCM_LM_DIAG_SIZE, \ | |
561 | .loff = 0, \ | |
562 | .lsize = 0, \ | |
563 | .maxlen = BCM_LM_DIAG_SIZE | |
564 | ||
01d5e44a MH |
565 | #define BCM_RECV_NULL \ |
566 | .type = BCM_NULL_PKT, \ | |
567 | .hlen = BCM_NULL_SIZE, \ | |
568 | .loff = 0, \ | |
569 | .lsize = 0, \ | |
570 | .maxlen = BCM_NULL_SIZE | |
571 | ||
79b8df93 | 572 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
573 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
574 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
575 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
576 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, | |
01d5e44a | 577 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
79b8df93 MH |
578 | }; |
579 | ||
bdd8818e MH |
580 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
581 | { | |
582 | struct bcm_data *bcm = hu->priv; | |
583 | ||
584 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
585 | return -EUNATCH; | |
586 | ||
79b8df93 MH |
587 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
588 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
589 | if (IS_ERR(bcm->rx_skb)) { |
590 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 591 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 592 | bcm->rx_skb = NULL; |
bdd8818e | 593 | return err; |
e88ab30d FD |
594 | } else if (!bcm->rx_skb) { |
595 | /* Delay auto-suspend when receiving completed packet */ | |
596 | mutex_lock(&bcm_device_lock); | |
b09c6152 HG |
597 | if (bcm->dev && bcm_device_exists(bcm->dev)) { |
598 | pm_runtime_get(bcm->dev->dev); | |
599 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
600 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
601 | } | |
e88ab30d | 602 | mutex_unlock(&bcm_device_lock); |
bdd8818e MH |
603 | } |
604 | ||
605 | return count; | |
606 | } | |
607 | ||
608 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
609 | { | |
610 | struct bcm_data *bcm = hu->priv; | |
611 | ||
65ad07c9 | 612 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
613 | |
614 | /* Prepend skb with frame type */ | |
618e8bc2 | 615 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
616 | skb_queue_tail(&bcm->txq, skb); |
617 | ||
618 | return 0; | |
619 | } | |
620 | ||
621 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
622 | { | |
623 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
624 | struct sk_buff *skb = NULL; |
625 | struct bcm_device *bdev = NULL; | |
626 | ||
627 | mutex_lock(&bcm_device_lock); | |
628 | ||
629 | if (bcm_device_exists(bcm->dev)) { | |
630 | bdev = bcm->dev; | |
c0d3ce58 | 631 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
632 | /* Shall be resumed here */ |
633 | } | |
634 | ||
635 | skb = skb_dequeue(&bcm->txq); | |
636 | ||
637 | if (bdev) { | |
c0d3ce58 HG |
638 | pm_runtime_mark_last_busy(bdev->dev); |
639 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 640 | } |
bdd8818e | 641 | |
e88ab30d FD |
642 | mutex_unlock(&bcm_device_lock); |
643 | ||
644 | return skb; | |
bdd8818e MH |
645 | } |
646 | ||
b7a622a2 FD |
647 | #ifdef CONFIG_PM |
648 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 649 | { |
78277d73 | 650 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 651 | int err; |
118612fb | 652 | |
b7a622a2 | 653 | bt_dev_dbg(bdev, ""); |
917522aa | 654 | |
b7a622a2 | 655 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
656 | hci_uart_set_flow_control(bdev->hu, true); |
657 | ||
b7a622a2 | 658 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
659 | bdev->is_suspended = true; |
660 | } | |
661 | ||
662 | /* Suspend the device */ | |
8bfa7e1e LW |
663 | err = bdev->set_device_wakeup(bdev, false); |
664 | if (err) { | |
665 | if (bdev->is_suspended && bdev->hu) { | |
666 | bdev->is_suspended = false; | |
667 | hci_uart_set_flow_control(bdev->hu, false); | |
668 | } | |
669 | return -EBUSY; | |
670 | } | |
671 | ||
3e81a4ca | 672 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); |
e4b9e5b8 | 673 | msleep(15); |
118612fb | 674 | |
b7a622a2 FD |
675 | return 0; |
676 | } | |
677 | ||
678 | static int bcm_resume_device(struct device *dev) | |
679 | { | |
78277d73 | 680 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 681 | int err; |
b7a622a2 FD |
682 | |
683 | bt_dev_dbg(bdev, ""); | |
684 | ||
8bfa7e1e LW |
685 | err = bdev->set_device_wakeup(bdev, true); |
686 | if (err) { | |
687 | dev_err(dev, "Failed to power up\n"); | |
688 | return err; | |
689 | } | |
690 | ||
3e81a4ca | 691 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); |
e4b9e5b8 | 692 | msleep(15); |
b7a622a2 FD |
693 | |
694 | /* When this executes, the device has woken up already */ | |
695 | if (bdev->is_suspended && bdev->hu) { | |
696 | bdev->is_suspended = false; | |
697 | ||
698 | hci_uart_set_flow_control(bdev->hu, false); | |
699 | } | |
700 | ||
701 | return 0; | |
702 | } | |
703 | #endif | |
704 | ||
705 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 706 | /* suspend callback */ |
b7a622a2 FD |
707 | static int bcm_suspend(struct device *dev) |
708 | { | |
78277d73 | 709 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
710 | int error; |
711 | ||
712 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
713 | ||
8a920568 HG |
714 | /* |
715 | * When used with a device instantiated as platform_device, bcm_suspend | |
716 | * can be called at any time as long as the platform device is bound, | |
717 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
718 | * and device_wake-up GPIO. |
719 | */ | |
720 | mutex_lock(&bcm_device_lock); | |
721 | ||
722 | if (!bdev->hu) | |
723 | goto unlock; | |
724 | ||
e88ab30d FD |
725 | if (pm_runtime_active(dev)) |
726 | bcm_suspend_device(dev); | |
b7a622a2 | 727 | |
4a59f1fa | 728 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
729 | error = enable_irq_wake(bdev->irq); |
730 | if (!error) | |
731 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
732 | } | |
733 | ||
917522aa | 734 | unlock: |
bb3ea16a | 735 | mutex_unlock(&bcm_device_lock); |
917522aa | 736 | |
118612fb FD |
737 | return 0; |
738 | } | |
739 | ||
8a920568 | 740 | /* resume callback */ |
118612fb FD |
741 | static int bcm_resume(struct device *dev) |
742 | { | |
78277d73 | 743 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 744 | int err = 0; |
118612fb | 745 | |
65ad07c9 | 746 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 747 | |
8a920568 HG |
748 | /* |
749 | * When used with a device instantiated as platform_device, bcm_resume | |
750 | * can be called at any time as long as platform device is bound, | |
751 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
752 | * and device_wake-up GPIO. |
753 | */ | |
bb3ea16a | 754 | mutex_lock(&bcm_device_lock); |
917522aa FD |
755 | |
756 | if (!bdev->hu) | |
757 | goto unlock; | |
758 | ||
4a59f1fa | 759 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
760 | disable_irq_wake(bdev->irq); |
761 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
762 | } | |
763 | ||
8bfa7e1e | 764 | err = bcm_resume_device(dev); |
118612fb | 765 | |
917522aa | 766 | unlock: |
bb3ea16a | 767 | mutex_unlock(&bcm_device_lock); |
917522aa | 768 | |
8bfa7e1e LW |
769 | if (!err) { |
770 | pm_runtime_disable(dev); | |
771 | pm_runtime_set_active(dev); | |
772 | pm_runtime_enable(dev); | |
773 | } | |
e88ab30d | 774 | |
118612fb FD |
775 | return 0; |
776 | } | |
777 | #endif | |
778 | ||
9644e6b9 HG |
779 | static const struct acpi_gpio_params first_gpio = { 0, 0, false }; |
780 | static const struct acpi_gpio_params second_gpio = { 1, 0, false }; | |
781 | static const struct acpi_gpio_params third_gpio = { 2, 0, false }; | |
89ab37b4 DD |
782 | |
783 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
9644e6b9 HG |
784 | { "device-wakeup-gpios", &first_gpio, 1 }, |
785 | { "shutdown-gpios", &second_gpio, 1 }, | |
786 | { "host-wakeup-gpios", &third_gpio, 1 }, | |
89ab37b4 DD |
787 | { }, |
788 | }; | |
789 | ||
89ab37b4 | 790 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { |
9644e6b9 HG |
791 | { "host-wakeup-gpios", &first_gpio, 1 }, |
792 | { "device-wakeup-gpios", &second_gpio, 1 }, | |
793 | { "shutdown-gpios", &third_gpio, 1 }, | |
0395ffc1 FD |
794 | { }, |
795 | }; | |
796 | ||
2b05393b HG |
797 | /* Some firmware reports an IRQ which does not work (wrong pin in fw table?) */ |
798 | static const struct dmi_system_id bcm_broken_irq_dmi_table[] = { | |
799 | { | |
800 | .ident = "Meegopad T08", | |
801 | .matches = { | |
802 | DMI_EXACT_MATCH(DMI_BOARD_VENDOR, | |
803 | "To be filled by OEM."), | |
804 | DMI_EXACT_MATCH(DMI_BOARD_NAME, "T3 MRD"), | |
805 | DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.1"), | |
806 | }, | |
807 | }, | |
808 | { } | |
809 | }; | |
810 | ||
50d78bcf | 811 | #ifdef CONFIG_ACPI |
ae056908 FD |
812 | static int bcm_resource(struct acpi_resource *ares, void *data) |
813 | { | |
814 | struct bcm_device *dev = data; | |
6cc4396c FD |
815 | struct acpi_resource_extended_irq *irq; |
816 | struct acpi_resource_gpio *gpio; | |
817 | struct acpi_resource_uart_serialbus *sb; | |
818 | ||
819 | switch (ares->type) { | |
820 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
821 | irq = &ares->data.extended_irq; | |
bb5208b3 HG |
822 | if (irq->polarity != ACPI_ACTIVE_LOW) |
823 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
824 | dev->irq_active_low = true; | |
6cc4396c FD |
825 | break; |
826 | ||
827 | case ACPI_RESOURCE_TYPE_GPIO: | |
828 | gpio = &ares->data.gpio; | |
a4de1567 HG |
829 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) { |
830 | dev->gpio_int_idx = dev->gpio_count; | |
227630cc | 831 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
a4de1567 HG |
832 | } |
833 | dev->gpio_count++; | |
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 | { |
2b05393b HG |
909 | const struct dmi_system_id *dmi_id; |
910 | ||
c0d3ce58 | 911 | dev->name = dev_name(dev->dev); |
0395ffc1 | 912 | |
4c33162c LW |
913 | if (x86_apple_machine && !bcm_apple_get_resources(dev)) |
914 | return 0; | |
915 | ||
c0d3ce58 | 916 | dev->clk = devm_clk_get(dev->dev, NULL); |
89ab37b4 | 917 | |
ab2f336c SW |
918 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
919 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
920 | if (IS_ERR(dev->device_wakeup)) |
921 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 922 | |
ab2f336c SW |
923 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
924 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
925 | if (IS_ERR(dev->shutdown)) |
926 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 927 | |
8353b4a6 LW |
928 | dev->set_device_wakeup = bcm_gpio_set_device_wakeup; |
929 | dev->set_shutdown = bcm_gpio_set_shutdown; | |
930 | ||
6cc4396c | 931 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
932 | if (dev->irq <= 0) { |
933 | struct gpio_desc *gpio; | |
934 | ||
c0d3ce58 | 935 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
936 | GPIOD_IN); |
937 | if (IS_ERR(gpio)) | |
938 | return PTR_ERR(gpio); | |
939 | ||
940 | dev->irq = gpiod_to_irq(gpio); | |
941 | } | |
942 | ||
2b05393b HG |
943 | dmi_id = dmi_first_match(bcm_broken_irq_dmi_table); |
944 | if (dmi_id) { | |
945 | dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n", | |
946 | dmi_id->ident); | |
947 | dev->irq = 0; | |
948 | } | |
949 | ||
5954cdf1 | 950 | dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
951 | return 0; |
952 | } | |
953 | ||
954 | #ifdef CONFIG_ACPI | |
955 | static int bcm_acpi_probe(struct bcm_device *dev) | |
956 | { | |
212d7183 | 957 | LIST_HEAD(resources); |
212d7183 | 958 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; |
9d54fd6a | 959 | struct resource_entry *entry; |
212d7183 AS |
960 | int ret; |
961 | ||
ae056908 | 962 | /* Retrieve UART ACPI info */ |
a4de1567 | 963 | dev->gpio_int_idx = -1; |
c0d3ce58 | 964 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 965 | &resources, bcm_resource, dev); |
5be00284 JN |
966 | if (ret < 0) |
967 | return ret; | |
9d54fd6a HG |
968 | |
969 | resource_list_for_each_entry(entry, &resources) { | |
970 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
971 | dev->irq = entry->res->start; | |
972 | break; | |
973 | } | |
974 | } | |
09dbf1b7 | 975 | acpi_dev_free_resource_list(&resources); |
ae056908 | 976 | |
a4de1567 HG |
977 | /* If the DSDT uses an Interrupt resource for the IRQ, then there are |
978 | * only 2 GPIO resources, we use the irq-last mapping for this, since | |
979 | * we already have an irq the 3th / last mapping will not be used. | |
980 | */ | |
981 | if (dev->irq) | |
982 | gpio_mapping = acpi_bcm_int_last_gpios; | |
983 | else if (dev->gpio_int_idx == 0) | |
984 | gpio_mapping = acpi_bcm_int_first_gpios; | |
985 | else if (dev->gpio_int_idx == 2) | |
986 | gpio_mapping = acpi_bcm_int_last_gpios; | |
987 | else | |
988 | dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n", | |
989 | dev->gpio_int_idx); | |
990 | ||
991 | /* Warn if our expectations are not met. */ | |
992 | if (dev->gpio_count != (dev->irq ? 2 : 3)) | |
993 | dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n", | |
994 | dev->gpio_count); | |
995 | ||
996 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); | |
997 | if (ret) | |
998 | return ret; | |
999 | ||
e09070c5 HG |
1000 | if (irq_polarity != -1) { |
1001 | dev->irq_active_low = irq_polarity; | |
1002 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
1003 | dev->irq_active_low ? "low" : "high"); | |
5cebdfea FD |
1004 | } |
1005 | ||
0395ffc1 FD |
1006 | return 0; |
1007 | } | |
50d78bcf FD |
1008 | #else |
1009 | static int bcm_acpi_probe(struct bcm_device *dev) | |
1010 | { | |
1011 | return -EINVAL; | |
1012 | } | |
1013 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 1014 | |
8a920568 HG |
1015 | static int bcm_of_probe(struct bcm_device *bdev) |
1016 | { | |
1017 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
1018 | return 0; | |
1019 | } | |
1020 | ||
0395ffc1 FD |
1021 | static int bcm_probe(struct platform_device *pdev) |
1022 | { | |
1023 | struct bcm_device *dev; | |
0395ffc1 FD |
1024 | int ret; |
1025 | ||
1026 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
1027 | if (!dev) | |
1028 | return -ENOMEM; | |
1029 | ||
c0d3ce58 | 1030 | dev->dev = &pdev->dev; |
4a56f891 | 1031 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 1032 | |
201762e2 | 1033 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 1034 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
1035 | if (ret) |
1036 | return ret; | |
1037 | } | |
1038 | ||
42ef18f0 | 1039 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
1040 | if (ret) |
1041 | return ret; | |
0395ffc1 FD |
1042 | |
1043 | platform_set_drvdata(pdev, dev); | |
1044 | ||
1045 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
1046 | ||
1047 | /* Place this instance on the device list */ | |
bb3ea16a | 1048 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1049 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 1050 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1051 | |
8bfa7e1e LW |
1052 | ret = bcm_gpio_set_power(dev, false); |
1053 | if (ret) | |
1054 | dev_err(&pdev->dev, "Failed to power down\n"); | |
0395ffc1 FD |
1055 | |
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | static int bcm_remove(struct platform_device *pdev) | |
1060 | { | |
1061 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
1062 | ||
bb3ea16a | 1063 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1064 | list_del(&dev->list); |
bb3ea16a | 1065 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1066 | |
0395ffc1 FD |
1067 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
1068 | ||
1069 | return 0; | |
1070 | } | |
1071 | ||
bdd8818e MH |
1072 | static const struct hci_uart_proto bcm_proto = { |
1073 | .id = HCI_UART_BCM, | |
143f0a28 | 1074 | .name = "Broadcom", |
aee61f7a | 1075 | .manufacturer = 15, |
61b2fc2b | 1076 | .init_speed = 115200, |
bdd8818e MH |
1077 | .open = bcm_open, |
1078 | .close = bcm_close, | |
1079 | .flush = bcm_flush, | |
1080 | .setup = bcm_setup, | |
61b2fc2b | 1081 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
1082 | .recv = bcm_recv, |
1083 | .enqueue = bcm_enqueue, | |
1084 | .dequeue = bcm_dequeue, | |
1085 | }; | |
1086 | ||
0395ffc1 FD |
1087 | #ifdef CONFIG_ACPI |
1088 | static const struct acpi_device_id bcm_acpi_match[] = { | |
61121502 HG |
1089 | { "BCM2E00" }, |
1090 | { "BCM2E01" }, | |
1091 | { "BCM2E02" }, | |
1092 | { "BCM2E03" }, | |
1093 | { "BCM2E04" }, | |
1094 | { "BCM2E05" }, | |
1095 | { "BCM2E06" }, | |
1096 | { "BCM2E07" }, | |
1097 | { "BCM2E08" }, | |
1098 | { "BCM2E09" }, | |
1099 | { "BCM2E0A" }, | |
1100 | { "BCM2E0B" }, | |
1101 | { "BCM2E0C" }, | |
1102 | { "BCM2E0D" }, | |
1103 | { "BCM2E0E" }, | |
1104 | { "BCM2E0F" }, | |
1105 | { "BCM2E10" }, | |
1106 | { "BCM2E11" }, | |
1107 | { "BCM2E12" }, | |
1108 | { "BCM2E13" }, | |
1109 | { "BCM2E14" }, | |
1110 | { "BCM2E15" }, | |
1111 | { "BCM2E16" }, | |
1112 | { "BCM2E17" }, | |
1113 | { "BCM2E18" }, | |
1114 | { "BCM2E19" }, | |
a4de1567 | 1115 | { "BCM2E1A" }, |
61121502 HG |
1116 | { "BCM2E1B" }, |
1117 | { "BCM2E1C" }, | |
1118 | { "BCM2E1D" }, | |
1119 | { "BCM2E1F" }, | |
1120 | { "BCM2E20" }, | |
1121 | { "BCM2E21" }, | |
1122 | { "BCM2E22" }, | |
1123 | { "BCM2E23" }, | |
1124 | { "BCM2E24" }, | |
1125 | { "BCM2E25" }, | |
1126 | { "BCM2E26" }, | |
1127 | { "BCM2E27" }, | |
1128 | { "BCM2E28" }, | |
1129 | { "BCM2E29" }, | |
1130 | { "BCM2E2A" }, | |
1131 | { "BCM2E2B" }, | |
1132 | { "BCM2E2C" }, | |
1133 | { "BCM2E2D" }, | |
1134 | { "BCM2E2E" }, | |
1135 | { "BCM2E2F" }, | |
1136 | { "BCM2E30" }, | |
1137 | { "BCM2E31" }, | |
1138 | { "BCM2E32" }, | |
1139 | { "BCM2E33" }, | |
1140 | { "BCM2E34" }, | |
1141 | { "BCM2E35" }, | |
1142 | { "BCM2E36" }, | |
1143 | { "BCM2E37" }, | |
a4de1567 HG |
1144 | { "BCM2E38" }, |
1145 | { "BCM2E39" }, | |
1146 | { "BCM2E3A" }, | |
61121502 HG |
1147 | { "BCM2E3B" }, |
1148 | { "BCM2E3C" }, | |
a4de1567 | 1149 | { "BCM2E3D" }, |
61121502 | 1150 | { "BCM2E3E" }, |
a4de1567 HG |
1151 | { "BCM2E3F" }, |
1152 | { "BCM2E40" }, | |
61121502 HG |
1153 | { "BCM2E41" }, |
1154 | { "BCM2E42" }, | |
1155 | { "BCM2E43" }, | |
1156 | { "BCM2E44" }, | |
1157 | { "BCM2E45" }, | |
1158 | { "BCM2E46" }, | |
1159 | { "BCM2E47" }, | |
1160 | { "BCM2E48" }, | |
1161 | { "BCM2E49" }, | |
1162 | { "BCM2E4A" }, | |
1163 | { "BCM2E4B" }, | |
1164 | { "BCM2E4C" }, | |
1165 | { "BCM2E4D" }, | |
1166 | { "BCM2E4E" }, | |
1167 | { "BCM2E4F" }, | |
1168 | { "BCM2E50" }, | |
1169 | { "BCM2E51" }, | |
1170 | { "BCM2E52" }, | |
1171 | { "BCM2E53" }, | |
a4de1567 HG |
1172 | { "BCM2E54" }, |
1173 | { "BCM2E55" }, | |
61121502 HG |
1174 | { "BCM2E56" }, |
1175 | { "BCM2E57" }, | |
1176 | { "BCM2E58" }, | |
1177 | { "BCM2E59" }, | |
1178 | { "BCM2E5A" }, | |
1179 | { "BCM2E5B" }, | |
1180 | { "BCM2E5C" }, | |
1181 | { "BCM2E5D" }, | |
1182 | { "BCM2E5E" }, | |
1183 | { "BCM2E5F" }, | |
1184 | { "BCM2E60" }, | |
1185 | { "BCM2E61" }, | |
1186 | { "BCM2E62" }, | |
1187 | { "BCM2E63" }, | |
a4de1567 HG |
1188 | { "BCM2E64" }, |
1189 | { "BCM2E65" }, | |
61121502 | 1190 | { "BCM2E66" }, |
a4de1567 | 1191 | { "BCM2E67" }, |
61121502 HG |
1192 | { "BCM2E68" }, |
1193 | { "BCM2E69" }, | |
1194 | { "BCM2E6B" }, | |
1195 | { "BCM2E6D" }, | |
1196 | { "BCM2E6E" }, | |
1197 | { "BCM2E6F" }, | |
1198 | { "BCM2E70" }, | |
a4de1567 HG |
1199 | { "BCM2E71" }, |
1200 | { "BCM2E72" }, | |
61121502 | 1201 | { "BCM2E73" }, |
a4de1567 | 1202 | { "BCM2E74" }, |
61121502 HG |
1203 | { "BCM2E75" }, |
1204 | { "BCM2E76" }, | |
1205 | { "BCM2E77" }, | |
1206 | { "BCM2E78" }, | |
1207 | { "BCM2E79" }, | |
1208 | { "BCM2E7A" }, | |
a4de1567 HG |
1209 | { "BCM2E7B" }, |
1210 | { "BCM2E7C" }, | |
61121502 | 1211 | { "BCM2E7D" }, |
a4de1567 | 1212 | { "BCM2E7E" }, |
61121502 HG |
1213 | { "BCM2E7F" }, |
1214 | { "BCM2E80" }, | |
1215 | { "BCM2E81" }, | |
1216 | { "BCM2E82" }, | |
a4de1567 HG |
1217 | { "BCM2E83" }, |
1218 | { "BCM2E84" }, | |
61121502 HG |
1219 | { "BCM2E85" }, |
1220 | { "BCM2E86" }, | |
1221 | { "BCM2E87" }, | |
1222 | { "BCM2E88" }, | |
1223 | { "BCM2E89" }, | |
1224 | { "BCM2E8A" }, | |
1225 | { "BCM2E8B" }, | |
1226 | { "BCM2E8C" }, | |
1227 | { "BCM2E8D" }, | |
1228 | { "BCM2E8E" }, | |
a4de1567 | 1229 | { "BCM2E90" }, |
61121502 HG |
1230 | { "BCM2E92" }, |
1231 | { "BCM2E93" }, | |
1232 | { "BCM2E94" }, | |
a4de1567 HG |
1233 | { "BCM2E95" }, |
1234 | { "BCM2E96" }, | |
61121502 HG |
1235 | { "BCM2E97" }, |
1236 | { "BCM2E98" }, | |
1237 | { "BCM2E99" }, | |
1238 | { "BCM2E9A" }, | |
1239 | { "BCM2E9B" }, | |
1240 | { "BCM2E9C" }, | |
1241 | { "BCM2E9D" }, | |
1242 | { "BCM2EA0" }, | |
1243 | { "BCM2EA1" }, | |
1244 | { "BCM2EA2" }, | |
1245 | { "BCM2EA3" }, | |
a4de1567 | 1246 | { "BCM2EA4" }, |
61121502 HG |
1247 | { "BCM2EA5" }, |
1248 | { "BCM2EA6" }, | |
1249 | { "BCM2EA7" }, | |
1250 | { "BCM2EA8" }, | |
1251 | { "BCM2EA9" }, | |
a4de1567 | 1252 | { "BCM2EAA" }, |
61121502 HG |
1253 | { "BCM2EAB" }, |
1254 | { "BCM2EAC" }, | |
0395ffc1 FD |
1255 | { }, |
1256 | }; | |
1257 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
1258 | #endif | |
1259 | ||
8a920568 | 1260 | /* suspend and resume callbacks */ |
e88ab30d FD |
1261 | static const struct dev_pm_ops bcm_pm_ops = { |
1262 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
1263 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
1264 | }; | |
118612fb | 1265 | |
0395ffc1 FD |
1266 | static struct platform_driver bcm_driver = { |
1267 | .probe = bcm_probe, | |
1268 | .remove = bcm_remove, | |
1269 | .driver = { | |
1270 | .name = "hci_bcm", | |
1271 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 1272 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
1273 | }, |
1274 | }; | |
1275 | ||
33cd149e LP |
1276 | static int bcm_serdev_probe(struct serdev_device *serdev) |
1277 | { | |
8a920568 | 1278 | struct bcm_device *bcmdev; |
33cd149e LP |
1279 | int err; |
1280 | ||
1281 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
1282 | if (!bcmdev) | |
1283 | return -ENOMEM; | |
1284 | ||
8a920568 | 1285 | bcmdev->dev = &serdev->dev; |
81a19053 | 1286 | #ifdef CONFIG_PM |
8a920568 | 1287 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1288 | #endif |
8a920568 | 1289 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1290 | serdev_device_set_drvdata(serdev, bcmdev); |
1291 | ||
8a920568 HG |
1292 | if (has_acpi_companion(&serdev->dev)) |
1293 | err = bcm_acpi_probe(bcmdev); | |
1294 | else | |
1295 | err = bcm_of_probe(bcmdev); | |
1296 | if (err) | |
1297 | return err; | |
33cd149e | 1298 | |
8a920568 HG |
1299 | err = bcm_get_resources(bcmdev); |
1300 | if (err) | |
1301 | return err; | |
1302 | ||
f3863f1d MH |
1303 | if (!bcmdev->shutdown) { |
1304 | dev_warn(&serdev->dev, | |
1305 | "No reset resource, using default baud rate\n"); | |
1306 | bcmdev->oper_speed = bcmdev->init_speed; | |
1307 | } | |
1308 | ||
8bfa7e1e LW |
1309 | err = bcm_gpio_set_power(bcmdev, false); |
1310 | if (err) | |
1311 | dev_err(&serdev->dev, "Failed to power down\n"); | |
8a920568 HG |
1312 | |
1313 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); | |
33cd149e LP |
1314 | } |
1315 | ||
1316 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1317 | { | |
8a920568 | 1318 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1319 | |
8a920568 | 1320 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1321 | } |
1322 | ||
1323 | #ifdef CONFIG_OF | |
1324 | static const struct of_device_id bcm_bluetooth_of_match[] = { | |
1325 | { .compatible = "brcm,bcm43438-bt" }, | |
1326 | { }, | |
1327 | }; | |
1328 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1329 | #endif | |
1330 | ||
1331 | static struct serdev_device_driver bcm_serdev_driver = { | |
1332 | .probe = bcm_serdev_probe, | |
1333 | .remove = bcm_serdev_remove, | |
1334 | .driver = { | |
1335 | .name = "hci_uart_bcm", | |
1336 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1337 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1338 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1339 | }, |
1340 | }; | |
1341 | ||
bdd8818e MH |
1342 | int __init bcm_init(void) |
1343 | { | |
33cd149e LP |
1344 | /* For now, we need to keep both platform device |
1345 | * driver (ACPI generated) and serdev driver (DT). | |
1346 | */ | |
0395ffc1 | 1347 | platform_driver_register(&bcm_driver); |
33cd149e | 1348 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1349 | |
bdd8818e MH |
1350 | return hci_uart_register_proto(&bcm_proto); |
1351 | } | |
1352 | ||
1353 | int __exit bcm_deinit(void) | |
1354 | { | |
0395ffc1 | 1355 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1356 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1357 | |
bdd8818e MH |
1358 | return hci_uart_unregister_proto(&bcm_proto); |
1359 | } |