Commit | Line | Data |
---|---|---|
1a59d1b8 | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
e9a2dd26 MH |
2 | /* |
3 | * | |
4 | * Bluetooth HCI UART driver for Broadcom devices | |
5 | * | |
6 | * Copyright (C) 2015 Intel Corporation | |
e9a2dd26 MH |
7 | */ |
8 | ||
9 | #include <linux/kernel.h> | |
10 | #include <linux/errno.h> | |
11 | #include <linux/skbuff.h> | |
18aeb444 | 12 | #include <linux/firmware.h> |
0395ffc1 FD |
13 | #include <linux/module.h> |
14 | #include <linux/acpi.h> | |
33cd149e | 15 | #include <linux/of.h> |
f25a96c8 | 16 | #include <linux/of_irq.h> |
33cd149e | 17 | #include <linux/property.h> |
4c33162c | 18 | #include <linux/platform_data/x86/apple.h> |
0395ffc1 | 19 | #include <linux/platform_device.h> |
75d11676 | 20 | #include <linux/regulator/consumer.h> |
0395ffc1 FD |
21 | #include <linux/clk.h> |
22 | #include <linux/gpio/consumer.h> | |
23 | #include <linux/tty.h> | |
6cc4396c | 24 | #include <linux/interrupt.h> |
5cebdfea | 25 | #include <linux/dmi.h> |
e88ab30d | 26 | #include <linux/pm_runtime.h> |
33cd149e | 27 | #include <linux/serdev.h> |
e9a2dd26 MH |
28 | |
29 | #include <net/bluetooth/bluetooth.h> | |
30 | #include <net/bluetooth/hci_core.h> | |
31 | ||
bdd8818e | 32 | #include "btbcm.h" |
e9a2dd26 | 33 | #include "hci_uart.h" |
bdd8818e | 34 | |
01d5e44a MH |
35 | #define BCM_NULL_PKT 0x00 |
36 | #define BCM_NULL_SIZE 0 | |
37 | ||
94c58132 MH |
38 | #define BCM_LM_DIAG_PKT 0x07 |
39 | #define BCM_LM_DIAG_SIZE 63 | |
40 | ||
22bba805 JB |
41 | #define BCM_TYPE49_PKT 0x31 |
42 | #define BCM_TYPE49_SIZE 0 | |
43 | ||
44 | #define BCM_TYPE52_PKT 0x34 | |
45 | #define BCM_TYPE52_SIZE 0 | |
46 | ||
e88ab30d FD |
47 | #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */ |
48 | ||
75d11676 CYT |
49 | #define BCM_NUM_SUPPLIES 2 |
50 | ||
5d6f3910 APS |
51 | /** |
52 | * struct bcm_device_data - device specific data | |
53 | * @no_early_set_baudrate: Disallow set baudrate before driver setup() | |
54 | */ | |
55 | struct bcm_device_data { | |
56 | bool no_early_set_baudrate; | |
e601daed | 57 | bool drive_rts_on_open; |
5d6f3910 APS |
58 | }; |
59 | ||
b7c2abac LW |
60 | /** |
61 | * struct bcm_device - device driver resources | |
62 | * @serdev_hu: HCI UART controller struct | |
63 | * @list: bcm_device_list node | |
64 | * @dev: physical UART slave | |
65 | * @name: device name logged by bt_dev_*() functions | |
66 | * @device_wakeup: BT_WAKE pin, | |
67 | * assert = Bluetooth device must wake up or remain awake, | |
68 | * deassert = Bluetooth device may sleep when sleep criteria are met | |
69 | * @shutdown: BT_REG_ON pin, | |
70 | * power up or power down Bluetooth device internal regulators | |
2f407966 LW |
71 | * @reset: BT_RST_N pin, |
72 | * active low resets the Bluetooth logic core | |
8353b4a6 | 73 | * @set_device_wakeup: callback to toggle BT_WAKE pin |
4c33162c | 74 | * either by accessing @device_wakeup or by calling @btlp |
8353b4a6 | 75 | * @set_shutdown: callback to toggle BT_REG_ON pin |
4c33162c LW |
76 | * either by accessing @shutdown or by calling @btpu/@btpd |
77 | * @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power") | |
78 | * @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up") | |
79 | * @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down") | |
55dbfcd0 | 80 | * @txco_clk: external reference frequency clock used by Bluetooth device |
90bc07cc | 81 | * @lpo_clk: external LPO clock used by Bluetooth device |
75d11676 CYT |
82 | * @supplies: VBAT and VDDIO supplies used by Bluetooth device |
83 | * @res_enabled: whether clocks and supplies are prepared and enabled | |
b7c2abac LW |
84 | * @init_speed: default baudrate of Bluetooth device; |
85 | * the host UART is initially set to this baudrate so that | |
86 | * it can configure the Bluetooth device for @oper_speed | |
87 | * @oper_speed: preferred baudrate of Bluetooth device; | |
88 | * set to 0 if @init_speed is already the preferred baudrate | |
89 | * @irq: interrupt triggered by HOST_WAKE_BT pin | |
90 | * @irq_active_low: whether @irq is active low | |
91 | * @hu: pointer to HCI UART controller struct, | |
92 | * used to disable flow control during runtime suspend and system sleep | |
93 | * @is_suspended: whether flow control is currently disabled | |
5d6f3910 | 94 | * @no_early_set_baudrate: don't set_baudrate before setup() |
b7c2abac | 95 | */ |
0395ffc1 | 96 | struct bcm_device { |
8a920568 HG |
97 | /* Must be the first member, hci_serdev.c expects this. */ |
98 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
99 | struct list_head list; |
100 | ||
c0d3ce58 | 101 | struct device *dev; |
0395ffc1 FD |
102 | |
103 | const char *name; | |
104 | struct gpio_desc *device_wakeup; | |
105 | struct gpio_desc *shutdown; | |
2f407966 | 106 | struct gpio_desc *reset; |
8353b4a6 LW |
107 | int (*set_device_wakeup)(struct bcm_device *, bool); |
108 | int (*set_shutdown)(struct bcm_device *, bool); | |
4c33162c LW |
109 | #ifdef CONFIG_ACPI |
110 | acpi_handle btlp, btpu, btpd; | |
a4de1567 HG |
111 | int gpio_count; |
112 | int gpio_int_idx; | |
4c33162c | 113 | #endif |
0395ffc1 | 114 | |
55dbfcd0 | 115 | struct clk *txco_clk; |
90bc07cc | 116 | struct clk *lpo_clk; |
75d11676 CYT |
117 | struct regulator_bulk_data supplies[BCM_NUM_SUPPLIES]; |
118 | bool res_enabled; | |
ae056908 FD |
119 | |
120 | u32 init_speed; | |
74183a1c | 121 | u32 oper_speed; |
6cc4396c | 122 | int irq; |
227630cc | 123 | bool irq_active_low; |
81bd5d0c | 124 | bool irq_acquired; |
118612fb | 125 | |
b7a622a2 | 126 | #ifdef CONFIG_PM |
118612fb | 127 | struct hci_uart *hu; |
b7c2abac | 128 | bool is_suspended; |
118612fb | 129 | #endif |
5d6f3910 | 130 | bool no_early_set_baudrate; |
e601daed | 131 | bool drive_rts_on_open; |
eb762b94 | 132 | u8 pcm_int_params[5]; |
0395ffc1 FD |
133 | }; |
134 | ||
33cd149e | 135 | /* generic bcm uart resources */ |
bdd8818e | 136 | struct bcm_data { |
0395ffc1 FD |
137 | struct sk_buff *rx_skb; |
138 | struct sk_buff_head txq; | |
139 | ||
140 | struct bcm_device *dev; | |
bdd8818e MH |
141 | }; |
142 | ||
0395ffc1 | 143 | /* List of BCM BT UART devices */ |
bb3ea16a | 144 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
145 | static LIST_HEAD(bcm_device_list); |
146 | ||
e09070c5 HG |
147 | static int irq_polarity = -1; |
148 | module_param(irq_polarity, int, 0444); | |
149 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
150 | ||
33cd149e LP |
151 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
152 | { | |
153 | if (hu->serdev) | |
154 | serdev_device_set_baudrate(hu->serdev, speed); | |
155 | else | |
156 | hci_uart_set_baudrate(hu, speed); | |
157 | } | |
158 | ||
61b2fc2b FD |
159 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
160 | { | |
161 | struct hci_dev *hdev = hu->hdev; | |
162 | struct sk_buff *skb; | |
163 | struct bcm_update_uart_baud_rate param; | |
164 | ||
165 | if (speed > 3000000) { | |
166 | struct bcm_write_uart_clock_setting clock; | |
167 | ||
168 | clock.type = BCM_UART_CLOCK_48MHZ; | |
169 | ||
65ad07c9 | 170 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
171 | |
172 | /* This Broadcom specific command changes the UART's controller | |
173 | * clock for baud rate > 3000000. | |
174 | */ | |
175 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, HCI_INIT_TIMEOUT); | |
176 | if (IS_ERR(skb)) { | |
177 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
178 | bt_dev_err(hdev, "BCM: failed to write clock (%d)", |
179 | err); | |
61b2fc2b FD |
180 | return err; |
181 | } | |
182 | ||
183 | kfree_skb(skb); | |
184 | } | |
185 | ||
65ad07c9 | 186 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
187 | |
188 | param.zero = cpu_to_le16(0); | |
189 | param.baud_rate = cpu_to_le32(speed); | |
190 | ||
191 | /* This Broadcom specific command changes the UART's controller baud | |
192 | * rate. | |
193 | */ | |
194 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
195 | HCI_INIT_TIMEOUT); | |
196 | if (IS_ERR(skb)) { | |
197 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
198 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
199 | err); | |
61b2fc2b FD |
200 | return err; |
201 | } | |
202 | ||
203 | kfree_skb(skb); | |
204 | ||
205 | return 0; | |
206 | } | |
207 | ||
917522aa | 208 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
209 | static bool bcm_device_exists(struct bcm_device *device) |
210 | { | |
211 | struct list_head *p; | |
212 | ||
81a19053 | 213 | #ifdef CONFIG_PM |
8a920568 HG |
214 | /* Devices using serdev always exist */ |
215 | if (device && device->hu && device->hu->serdev) | |
216 | return true; | |
81a19053 | 217 | #endif |
8a920568 | 218 | |
0395ffc1 FD |
219 | list_for_each(p, &bcm_device_list) { |
220 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
221 | ||
222 | if (device == dev) | |
223 | return true; | |
224 | } | |
225 | ||
226 | return false; | |
227 | } | |
228 | ||
229 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
230 | { | |
8bfa7e1e | 231 | int err; |
0395ffc1 | 232 | |
75d11676 | 233 | if (powered && !dev->res_enabled) { |
62611abc CYT |
234 | /* Intel Macs use bcm_apple_get_resources() and don't |
235 | * have regulator supplies configured. | |
236 | */ | |
237 | if (dev->supplies[0].supply) { | |
238 | err = regulator_bulk_enable(BCM_NUM_SUPPLIES, | |
239 | dev->supplies); | |
240 | if (err) | |
241 | return err; | |
242 | } | |
75d11676 | 243 | |
90bc07cc CYT |
244 | /* LPO clock needs to be 32.768 kHz */ |
245 | err = clk_set_rate(dev->lpo_clk, 32768); | |
246 | if (err) { | |
247 | dev_err(dev->dev, "Could not set LPO clock rate\n"); | |
75d11676 | 248 | goto err_regulator_disable; |
90bc07cc CYT |
249 | } |
250 | ||
251 | err = clk_prepare_enable(dev->lpo_clk); | |
8bfa7e1e | 252 | if (err) |
75d11676 | 253 | goto err_regulator_disable; |
90bc07cc CYT |
254 | |
255 | err = clk_prepare_enable(dev->txco_clk); | |
256 | if (err) | |
257 | goto err_lpo_clk_disable; | |
8bfa7e1e LW |
258 | } |
259 | ||
260 | err = dev->set_shutdown(dev, powered); | |
261 | if (err) | |
90bc07cc | 262 | goto err_txco_clk_disable; |
8bfa7e1e LW |
263 | |
264 | err = dev->set_device_wakeup(dev, powered); | |
265 | if (err) | |
266 | goto err_revert_shutdown; | |
0395ffc1 | 267 | |
75d11676 | 268 | if (!powered && dev->res_enabled) { |
55dbfcd0 | 269 | clk_disable_unprepare(dev->txco_clk); |
90bc07cc | 270 | clk_disable_unprepare(dev->lpo_clk); |
62611abc CYT |
271 | |
272 | /* Intel Macs use bcm_apple_get_resources() and don't | |
273 | * have regulator supplies configured. | |
274 | */ | |
275 | if (dev->supplies[0].supply) | |
276 | regulator_bulk_disable(BCM_NUM_SUPPLIES, | |
277 | dev->supplies); | |
90bc07cc | 278 | } |
0395ffc1 | 279 | |
91927a9b | 280 | /* wait for device to power on and come out of reset */ |
16946de5 | 281 | usleep_range(100000, 120000); |
91927a9b | 282 | |
75d11676 | 283 | dev->res_enabled = powered; |
0395ffc1 FD |
284 | |
285 | return 0; | |
8bfa7e1e LW |
286 | |
287 | err_revert_shutdown: | |
288 | dev->set_shutdown(dev, !powered); | |
90bc07cc | 289 | err_txco_clk_disable: |
75d11676 | 290 | if (powered && !dev->res_enabled) |
55dbfcd0 | 291 | clk_disable_unprepare(dev->txco_clk); |
90bc07cc | 292 | err_lpo_clk_disable: |
75d11676 | 293 | if (powered && !dev->res_enabled) |
90bc07cc | 294 | clk_disable_unprepare(dev->lpo_clk); |
75d11676 CYT |
295 | err_regulator_disable: |
296 | if (powered && !dev->res_enabled) | |
297 | regulator_bulk_disable(BCM_NUM_SUPPLIES, dev->supplies); | |
8bfa7e1e | 298 | return err; |
0395ffc1 FD |
299 | } |
300 | ||
b7a622a2 | 301 | #ifdef CONFIG_PM |
6cc4396c FD |
302 | static irqreturn_t bcm_host_wake(int irq, void *data) |
303 | { | |
304 | struct bcm_device *bdev = data; | |
305 | ||
306 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
307 | ||
b09c6152 HG |
308 | pm_runtime_get(bdev->dev); |
309 | pm_runtime_mark_last_busy(bdev->dev); | |
310 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 311 | |
6cc4396c FD |
312 | return IRQ_HANDLED; |
313 | } | |
314 | ||
315 | static int bcm_request_irq(struct bcm_data *bcm) | |
316 | { | |
317 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 318 | int err; |
6cc4396c | 319 | |
6cc4396c FD |
320 | mutex_lock(&bcm_device_lock); |
321 | if (!bcm_device_exists(bdev)) { | |
322 | err = -ENODEV; | |
323 | goto unlock; | |
324 | } | |
325 | ||
98dc77d5 LP |
326 | if (bdev->irq <= 0) { |
327 | err = -EOPNOTSUPP; | |
328 | goto unlock; | |
329 | } | |
6cc4396c | 330 | |
c0d3ce58 | 331 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
332 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
333 | IRQF_TRIGGER_RISING, | |
334 | "host_wake", bdev); | |
4dc27330 LW |
335 | if (err) { |
336 | bdev->irq = err; | |
98dc77d5 | 337 | goto unlock; |
4dc27330 | 338 | } |
e88ab30d | 339 | |
81bd5d0c MM |
340 | bdev->irq_acquired = true; |
341 | ||
c0d3ce58 | 342 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 343 | |
c0d3ce58 | 344 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 345 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
346 | pm_runtime_use_autosuspend(bdev->dev); |
347 | pm_runtime_set_active(bdev->dev); | |
348 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
349 | |
350 | unlock: | |
351 | mutex_unlock(&bcm_device_lock); | |
352 | ||
353 | return err; | |
354 | } | |
355 | ||
356 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
357 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
358 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
359 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
360 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
361 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
362 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 363 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
364 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
365 | /* Irrelevant USB flags */ | |
366 | .usb_auto_sleep = 0, | |
367 | .usb_resume_timeout = 0, | |
ff875960 | 368 | .break_to_host = 0, |
e07c99b0 | 369 | .pulsed_host_wake = 1, |
6cc4396c FD |
370 | }; |
371 | ||
372 | static int bcm_setup_sleep(struct hci_uart *hu) | |
373 | { | |
374 | struct bcm_data *bcm = hu->priv; | |
375 | struct sk_buff *skb; | |
376 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
377 | ||
227630cc | 378 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
379 | |
380 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
381 | &sleep_params, HCI_INIT_TIMEOUT); | |
382 | if (IS_ERR(skb)) { | |
383 | int err = PTR_ERR(skb); | |
384 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
385 | return err; | |
386 | } | |
387 | kfree_skb(skb); | |
388 | ||
389 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
390 | ||
391 | return 0; | |
392 | } | |
393 | #else | |
394 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
395 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
396 | #endif | |
397 | ||
075e1f5e MH |
398 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
399 | { | |
400 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
401 | struct bcm_data *bcm = hu->priv; | |
402 | struct sk_buff *skb; | |
403 | ||
404 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
405 | return -ENETDOWN; | |
406 | ||
407 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
408 | if (!skb) |
409 | return -ENOMEM; | |
075e1f5e | 410 | |
634fef61 JB |
411 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
412 | skb_put_u8(skb, 0xf0); | |
413 | skb_put_u8(skb, enable); | |
075e1f5e MH |
414 | |
415 | skb_queue_tail(&bcm->txq, skb); | |
416 | hci_uart_tx_wakeup(hu); | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
bdd8818e MH |
421 | static int bcm_open(struct hci_uart *hu) |
422 | { | |
423 | struct bcm_data *bcm; | |
0395ffc1 | 424 | struct list_head *p; |
8bfa7e1e | 425 | int err; |
bdd8818e | 426 | |
65ad07c9 | 427 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 428 | |
b36a1552 VD |
429 | if (!hci_uart_has_flow_control(hu)) |
430 | return -EOPNOTSUPP; | |
431 | ||
bdd8818e MH |
432 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); |
433 | if (!bcm) | |
434 | return -ENOMEM; | |
435 | ||
436 | skb_queue_head_init(&bcm->txq); | |
437 | ||
438 | hu->priv = bcm; | |
0395ffc1 | 439 | |
8a920568 HG |
440 | mutex_lock(&bcm_device_lock); |
441 | ||
33cd149e | 442 | if (hu->serdev) { |
8a920568 | 443 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
444 | goto out; |
445 | } | |
446 | ||
95065a61 JH |
447 | if (!hu->tty->dev) |
448 | goto out; | |
449 | ||
0395ffc1 FD |
450 | list_for_each(p, &bcm_device_list) { |
451 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
452 | ||
453 | /* Retrieve saved bcm_device based on parent of the | |
454 | * platform device (saved during device probe) and | |
455 | * parent of tty device used by hci_uart | |
456 | */ | |
c0d3ce58 | 457 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 458 | bcm->dev = dev; |
b7a622a2 | 459 | #ifdef CONFIG_PM |
118612fb FD |
460 | dev->hu = hu; |
461 | #endif | |
0395ffc1 FD |
462 | break; |
463 | } | |
464 | } | |
465 | ||
95065a61 | 466 | out: |
8a920568 | 467 | if (bcm->dev) { |
e601daed SW |
468 | if (bcm->dev->drive_rts_on_open) |
469 | hci_uart_set_flow_control(hu, true); | |
470 | ||
8a920568 | 471 | hu->init_speed = bcm->dev->init_speed; |
5d6f3910 APS |
472 | |
473 | /* If oper_speed is set, ldisc/serdev will set the baudrate | |
474 | * before calling setup() | |
475 | */ | |
476 | if (!bcm->dev->no_early_set_baudrate) | |
477 | hu->oper_speed = bcm->dev->oper_speed; | |
478 | ||
8bfa7e1e | 479 | err = bcm_gpio_set_power(bcm->dev, true); |
e601daed SW |
480 | |
481 | if (bcm->dev->drive_rts_on_open) | |
482 | hci_uart_set_flow_control(hu, false); | |
483 | ||
8bfa7e1e LW |
484 | if (err) |
485 | goto err_unset_hu; | |
8a920568 HG |
486 | } |
487 | ||
488 | mutex_unlock(&bcm_device_lock); | |
bdd8818e | 489 | return 0; |
8bfa7e1e LW |
490 | |
491 | err_unset_hu: | |
492 | #ifdef CONFIG_PM | |
e9ca0807 | 493 | if (!hu->serdev) |
8c6b8eda | 494 | bcm->dev->hu = NULL; |
8bfa7e1e | 495 | #endif |
8bfa7e1e LW |
496 | mutex_unlock(&bcm_device_lock); |
497 | hu->priv = NULL; | |
498 | kfree(bcm); | |
499 | return err; | |
bdd8818e MH |
500 | } |
501 | ||
502 | static int bcm_close(struct hci_uart *hu) | |
503 | { | |
504 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 505 | struct bcm_device *bdev = NULL; |
8bfa7e1e | 506 | int err; |
bdd8818e | 507 | |
65ad07c9 | 508 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 509 | |
0395ffc1 | 510 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 511 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
512 | |
513 | if (hu->serdev) { | |
8a920568 HG |
514 | bdev = serdev_device_get_drvdata(hu->serdev); |
515 | } else if (bcm_device_exists(bcm->dev)) { | |
516 | bdev = bcm->dev; | |
517 | #ifdef CONFIG_PM | |
518 | bdev->hu = NULL; | |
519 | #endif | |
520 | } | |
521 | ||
522 | if (bdev) { | |
81bd5d0c | 523 | if (IS_ENABLED(CONFIG_PM) && bdev->irq_acquired) { |
c0d3ce58 HG |
524 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
525 | device_init_wakeup(bdev->dev, false); | |
f4cf6b7e | 526 | pm_runtime_disable(bdev->dev); |
6cc4396c | 527 | } |
54ba69f9 | 528 | |
8bfa7e1e LW |
529 | err = bcm_gpio_set_power(bdev, false); |
530 | if (err) | |
531 | bt_dev_err(hu->hdev, "Failed to power down"); | |
532 | else | |
533 | pm_runtime_set_suspended(bdev->dev); | |
118612fb | 534 | } |
bb3ea16a | 535 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 536 | |
bdd8818e MH |
537 | skb_queue_purge(&bcm->txq); |
538 | kfree_skb(bcm->rx_skb); | |
539 | kfree(bcm); | |
540 | ||
541 | hu->priv = NULL; | |
542 | return 0; | |
543 | } | |
544 | ||
545 | static int bcm_flush(struct hci_uart *hu) | |
546 | { | |
547 | struct bcm_data *bcm = hu->priv; | |
548 | ||
65ad07c9 | 549 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
550 | |
551 | skb_queue_purge(&bcm->txq); | |
552 | ||
553 | return 0; | |
554 | } | |
555 | ||
556 | static int bcm_setup(struct hci_uart *hu) | |
557 | { | |
6cc4396c | 558 | struct bcm_data *bcm = hu->priv; |
0287c5d8 | 559 | bool fw_load_done = false; |
960ef1d7 | 560 | unsigned int speed; |
6be09b48 FD |
561 | int err; |
562 | ||
65ad07c9 | 563 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 564 | |
075e1f5e | 565 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
566 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
567 | ||
0287c5d8 | 568 | err = btbcm_initialize(hu->hdev, &fw_load_done); |
6be09b48 FD |
569 | if (err) |
570 | return err; | |
571 | ||
0287c5d8 | 572 | if (!fw_load_done) |
6be09b48 | 573 | return 0; |
6be09b48 | 574 | |
960ef1d7 FD |
575 | /* Init speed if any */ |
576 | if (hu->init_speed) | |
577 | speed = hu->init_speed; | |
578 | else if (hu->proto->init_speed) | |
579 | speed = hu->proto->init_speed; | |
580 | else | |
581 | speed = 0; | |
582 | ||
583 | if (speed) | |
33cd149e | 584 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
585 | |
586 | /* Operational speed if any */ | |
587 | if (hu->oper_speed) | |
588 | speed = hu->oper_speed; | |
5d6f3910 APS |
589 | else if (bcm->dev && bcm->dev->oper_speed) |
590 | speed = bcm->dev->oper_speed; | |
960ef1d7 FD |
591 | else if (hu->proto->oper_speed) |
592 | speed = hu->proto->oper_speed; | |
593 | else | |
594 | speed = 0; | |
595 | ||
596 | if (speed) { | |
597 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 598 | if (!err) |
33cd149e | 599 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
600 | } |
601 | ||
eb762b94 APS |
602 | /* PCM parameters if provided */ |
603 | if (bcm->dev && bcm->dev->pcm_int_params[0] != 0xff) { | |
604 | struct bcm_set_pcm_int_params params; | |
605 | ||
606 | btbcm_read_pcm_int_params(hu->hdev, ¶ms); | |
607 | ||
608 | memcpy(¶ms, bcm->dev->pcm_int_params, 5); | |
609 | btbcm_write_pcm_int_params(hu->hdev, ¶ms); | |
610 | } | |
611 | ||
0383f16a | 612 | err = btbcm_finalize(hu->hdev, &fw_load_done); |
6cc4396c FD |
613 | if (err) |
614 | return err; | |
615 | ||
f8c51d28 HG |
616 | /* Some devices ship with the controller default address. |
617 | * Allow the bootloader to set a valid address through the | |
618 | * device tree. | |
619 | */ | |
620 | set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hu->hdev->quirks); | |
621 | ||
cdd24a20 | 622 | if (!bcm_request_irq(bcm)) |
6cc4396c | 623 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
624 | |
625 | return err; | |
bdd8818e MH |
626 | } |
627 | ||
94c58132 MH |
628 | #define BCM_RECV_LM_DIAG \ |
629 | .type = BCM_LM_DIAG_PKT, \ | |
630 | .hlen = BCM_LM_DIAG_SIZE, \ | |
631 | .loff = 0, \ | |
632 | .lsize = 0, \ | |
633 | .maxlen = BCM_LM_DIAG_SIZE | |
634 | ||
01d5e44a MH |
635 | #define BCM_RECV_NULL \ |
636 | .type = BCM_NULL_PKT, \ | |
637 | .hlen = BCM_NULL_SIZE, \ | |
638 | .loff = 0, \ | |
639 | .lsize = 0, \ | |
640 | .maxlen = BCM_NULL_SIZE | |
641 | ||
22bba805 JB |
642 | #define BCM_RECV_TYPE49 \ |
643 | .type = BCM_TYPE49_PKT, \ | |
644 | .hlen = BCM_TYPE49_SIZE, \ | |
645 | .loff = 0, \ | |
646 | .lsize = 0, \ | |
647 | .maxlen = BCM_TYPE49_SIZE | |
648 | ||
649 | #define BCM_RECV_TYPE52 \ | |
650 | .type = BCM_TYPE52_PKT, \ | |
651 | .hlen = BCM_TYPE52_SIZE, \ | |
652 | .loff = 0, \ | |
653 | .lsize = 0, \ | |
654 | .maxlen = BCM_TYPE52_SIZE | |
655 | ||
79b8df93 | 656 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
657 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
658 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
659 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
9edd1de7 | 660 | { H4_RECV_ISO, .recv = hci_recv_frame }, |
94c58132 | 661 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, |
01d5e44a | 662 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
22bba805 JB |
663 | { BCM_RECV_TYPE49, .recv = hci_recv_diag }, |
664 | { BCM_RECV_TYPE52, .recv = hci_recv_diag }, | |
79b8df93 MH |
665 | }; |
666 | ||
bdd8818e MH |
667 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
668 | { | |
669 | struct bcm_data *bcm = hu->priv; | |
670 | ||
671 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
672 | return -EUNATCH; | |
673 | ||
79b8df93 MH |
674 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
675 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
676 | if (IS_ERR(bcm->rx_skb)) { |
677 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 678 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 679 | bcm->rx_skb = NULL; |
bdd8818e | 680 | return err; |
e88ab30d FD |
681 | } else if (!bcm->rx_skb) { |
682 | /* Delay auto-suspend when receiving completed packet */ | |
683 | mutex_lock(&bcm_device_lock); | |
b09c6152 HG |
684 | if (bcm->dev && bcm_device_exists(bcm->dev)) { |
685 | pm_runtime_get(bcm->dev->dev); | |
686 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
687 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
688 | } | |
e88ab30d | 689 | mutex_unlock(&bcm_device_lock); |
bdd8818e MH |
690 | } |
691 | ||
692 | return count; | |
693 | } | |
694 | ||
695 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
696 | { | |
697 | struct bcm_data *bcm = hu->priv; | |
698 | ||
65ad07c9 | 699 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
700 | |
701 | /* Prepend skb with frame type */ | |
618e8bc2 | 702 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
703 | skb_queue_tail(&bcm->txq, skb); |
704 | ||
705 | return 0; | |
706 | } | |
707 | ||
708 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
709 | { | |
710 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
711 | struct sk_buff *skb = NULL; |
712 | struct bcm_device *bdev = NULL; | |
713 | ||
714 | mutex_lock(&bcm_device_lock); | |
715 | ||
716 | if (bcm_device_exists(bcm->dev)) { | |
717 | bdev = bcm->dev; | |
c0d3ce58 | 718 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
719 | /* Shall be resumed here */ |
720 | } | |
721 | ||
722 | skb = skb_dequeue(&bcm->txq); | |
723 | ||
724 | if (bdev) { | |
c0d3ce58 HG |
725 | pm_runtime_mark_last_busy(bdev->dev); |
726 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 727 | } |
bdd8818e | 728 | |
e88ab30d FD |
729 | mutex_unlock(&bcm_device_lock); |
730 | ||
731 | return skb; | |
bdd8818e MH |
732 | } |
733 | ||
b7a622a2 FD |
734 | #ifdef CONFIG_PM |
735 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 736 | { |
78277d73 | 737 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 738 | int err; |
118612fb | 739 | |
b7a622a2 | 740 | bt_dev_dbg(bdev, ""); |
917522aa | 741 | |
b7a622a2 | 742 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
743 | hci_uart_set_flow_control(bdev->hu, true); |
744 | ||
b7a622a2 | 745 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
746 | bdev->is_suspended = true; |
747 | } | |
748 | ||
749 | /* Suspend the device */ | |
8bfa7e1e LW |
750 | err = bdev->set_device_wakeup(bdev, false); |
751 | if (err) { | |
752 | if (bdev->is_suspended && bdev->hu) { | |
753 | bdev->is_suspended = false; | |
754 | hci_uart_set_flow_control(bdev->hu, false); | |
755 | } | |
756 | return -EBUSY; | |
757 | } | |
758 | ||
3e81a4ca | 759 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); |
e4b9e5b8 | 760 | msleep(15); |
118612fb | 761 | |
b7a622a2 FD |
762 | return 0; |
763 | } | |
764 | ||
765 | static int bcm_resume_device(struct device *dev) | |
766 | { | |
78277d73 | 767 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 768 | int err; |
b7a622a2 FD |
769 | |
770 | bt_dev_dbg(bdev, ""); | |
771 | ||
8bfa7e1e LW |
772 | err = bdev->set_device_wakeup(bdev, true); |
773 | if (err) { | |
774 | dev_err(dev, "Failed to power up\n"); | |
775 | return err; | |
776 | } | |
777 | ||
3e81a4ca | 778 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); |
e4b9e5b8 | 779 | msleep(15); |
b7a622a2 FD |
780 | |
781 | /* When this executes, the device has woken up already */ | |
782 | if (bdev->is_suspended && bdev->hu) { | |
783 | bdev->is_suspended = false; | |
784 | ||
785 | hci_uart_set_flow_control(bdev->hu, false); | |
786 | } | |
787 | ||
788 | return 0; | |
789 | } | |
790 | #endif | |
791 | ||
792 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 793 | /* suspend callback */ |
b7a622a2 FD |
794 | static int bcm_suspend(struct device *dev) |
795 | { | |
78277d73 | 796 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
797 | int error; |
798 | ||
799 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
800 | ||
8a920568 HG |
801 | /* |
802 | * When used with a device instantiated as platform_device, bcm_suspend | |
803 | * can be called at any time as long as the platform device is bound, | |
804 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
805 | * and device_wake-up GPIO. |
806 | */ | |
807 | mutex_lock(&bcm_device_lock); | |
808 | ||
809 | if (!bdev->hu) | |
810 | goto unlock; | |
811 | ||
e88ab30d FD |
812 | if (pm_runtime_active(dev)) |
813 | bcm_suspend_device(dev); | |
b7a622a2 | 814 | |
4a59f1fa | 815 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
816 | error = enable_irq_wake(bdev->irq); |
817 | if (!error) | |
818 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
819 | } | |
820 | ||
917522aa | 821 | unlock: |
bb3ea16a | 822 | mutex_unlock(&bcm_device_lock); |
917522aa | 823 | |
118612fb FD |
824 | return 0; |
825 | } | |
826 | ||
8a920568 | 827 | /* resume callback */ |
118612fb FD |
828 | static int bcm_resume(struct device *dev) |
829 | { | |
78277d73 | 830 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 831 | int err = 0; |
118612fb | 832 | |
65ad07c9 | 833 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 834 | |
8a920568 HG |
835 | /* |
836 | * When used with a device instantiated as platform_device, bcm_resume | |
837 | * can be called at any time as long as platform device is bound, | |
838 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
839 | * and device_wake-up GPIO. |
840 | */ | |
bb3ea16a | 841 | mutex_lock(&bcm_device_lock); |
917522aa FD |
842 | |
843 | if (!bdev->hu) | |
844 | goto unlock; | |
845 | ||
4a59f1fa | 846 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
847 | disable_irq_wake(bdev->irq); |
848 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
849 | } | |
850 | ||
8bfa7e1e | 851 | err = bcm_resume_device(dev); |
118612fb | 852 | |
917522aa | 853 | unlock: |
bb3ea16a | 854 | mutex_unlock(&bcm_device_lock); |
917522aa | 855 | |
8bfa7e1e LW |
856 | if (!err) { |
857 | pm_runtime_disable(dev); | |
858 | pm_runtime_set_active(dev); | |
859 | pm_runtime_enable(dev); | |
860 | } | |
e88ab30d | 861 | |
118612fb FD |
862 | return 0; |
863 | } | |
864 | #endif | |
865 | ||
ff7c8380 Y |
866 | /* Some firmware reports an IRQ which does not work (wrong pin in fw table?) */ |
867 | static const struct dmi_system_id bcm_broken_irq_dmi_table[] = { | |
868 | { | |
869 | .ident = "Meegopad T08", | |
870 | .matches = { | |
871 | DMI_EXACT_MATCH(DMI_BOARD_VENDOR, | |
872 | "To be filled by OEM."), | |
873 | DMI_EXACT_MATCH(DMI_BOARD_NAME, "T3 MRD"), | |
874 | DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.1"), | |
875 | }, | |
876 | }, | |
877 | { } | |
878 | }; | |
879 | ||
880 | #ifdef CONFIG_ACPI | |
9644e6b9 HG |
881 | static const struct acpi_gpio_params first_gpio = { 0, 0, false }; |
882 | static const struct acpi_gpio_params second_gpio = { 1, 0, false }; | |
883 | static const struct acpi_gpio_params third_gpio = { 2, 0, false }; | |
89ab37b4 DD |
884 | |
885 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
9644e6b9 HG |
886 | { "device-wakeup-gpios", &first_gpio, 1 }, |
887 | { "shutdown-gpios", &second_gpio, 1 }, | |
888 | { "host-wakeup-gpios", &third_gpio, 1 }, | |
89ab37b4 DD |
889 | { }, |
890 | }; | |
891 | ||
89ab37b4 | 892 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { |
9644e6b9 HG |
893 | { "host-wakeup-gpios", &first_gpio, 1 }, |
894 | { "device-wakeup-gpios", &second_gpio, 1 }, | |
895 | { "shutdown-gpios", &third_gpio, 1 }, | |
0395ffc1 FD |
896 | { }, |
897 | }; | |
898 | ||
ae056908 FD |
899 | static int bcm_resource(struct acpi_resource *ares, void *data) |
900 | { | |
901 | struct bcm_device *dev = data; | |
6cc4396c FD |
902 | struct acpi_resource_extended_irq *irq; |
903 | struct acpi_resource_gpio *gpio; | |
904 | struct acpi_resource_uart_serialbus *sb; | |
905 | ||
906 | switch (ares->type) { | |
907 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
908 | irq = &ares->data.extended_irq; | |
bb5208b3 HG |
909 | if (irq->polarity != ACPI_ACTIVE_LOW) |
910 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
911 | dev->irq_active_low = true; | |
6cc4396c FD |
912 | break; |
913 | ||
914 | case ACPI_RESOURCE_TYPE_GPIO: | |
915 | gpio = &ares->data.gpio; | |
a4de1567 HG |
916 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) { |
917 | dev->gpio_int_idx = dev->gpio_count; | |
227630cc | 918 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
a4de1567 HG |
919 | } |
920 | dev->gpio_count++; | |
6cc4396c FD |
921 | break; |
922 | ||
923 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 924 | sb = &ares->data.uart_serial_bus; |
74183a1c | 925 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 926 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
927 | dev->oper_speed = 4000000; |
928 | } | |
6cc4396c FD |
929 | break; |
930 | ||
931 | default: | |
932 | break; | |
ae056908 FD |
933 | } |
934 | ||
9d54fd6a | 935 | return 0; |
ae056908 | 936 | } |
4c33162c LW |
937 | |
938 | static int bcm_apple_set_device_wakeup(struct bcm_device *dev, bool awake) | |
939 | { | |
940 | if (ACPI_FAILURE(acpi_execute_simple_method(dev->btlp, NULL, !awake))) | |
941 | return -EIO; | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
946 | static int bcm_apple_set_shutdown(struct bcm_device *dev, bool powered) | |
947 | { | |
948 | if (ACPI_FAILURE(acpi_evaluate_object(powered ? dev->btpu : dev->btpd, | |
949 | NULL, NULL, NULL))) | |
950 | return -EIO; | |
951 | ||
952 | return 0; | |
953 | } | |
954 | ||
955 | static int bcm_apple_get_resources(struct bcm_device *dev) | |
956 | { | |
957 | struct acpi_device *adev = ACPI_COMPANION(dev->dev); | |
958 | const union acpi_object *obj; | |
959 | ||
960 | if (!adev || | |
961 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTLP", &dev->btlp)) || | |
962 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPU", &dev->btpu)) || | |
963 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPD", &dev->btpd))) | |
964 | return -ENODEV; | |
965 | ||
966 | if (!acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, &obj) && | |
967 | obj->buffer.length == 8) | |
968 | dev->init_speed = *(u64 *)obj->buffer.pointer; | |
969 | ||
970 | dev->set_device_wakeup = bcm_apple_set_device_wakeup; | |
971 | dev->set_shutdown = bcm_apple_set_shutdown; | |
972 | ||
973 | return 0; | |
974 | } | |
975 | #else | |
976 | static inline int bcm_apple_get_resources(struct bcm_device *dev) | |
977 | { | |
978 | return -EOPNOTSUPP; | |
979 | } | |
212d7183 | 980 | #endif /* CONFIG_ACPI */ |
ae056908 | 981 | |
8353b4a6 LW |
982 | static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake) |
983 | { | |
fb2d466b | 984 | gpiod_set_value_cansleep(dev->device_wakeup, awake); |
8353b4a6 LW |
985 | return 0; |
986 | } | |
987 | ||
988 | static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered) | |
989 | { | |
fb2d466b | 990 | gpiod_set_value_cansleep(dev->shutdown, powered); |
2f407966 LW |
991 | if (dev->reset) |
992 | /* | |
993 | * The reset line is asserted on powerdown and deasserted | |
994 | * on poweron so the inverse of powered is used. Notice | |
995 | * that the GPIO line BT_RST_N needs to be specified as | |
996 | * active low in the device tree or similar system | |
997 | * description. | |
998 | */ | |
999 | gpiod_set_value_cansleep(dev->reset, !powered); | |
8353b4a6 LW |
1000 | return 0; |
1001 | } | |
1002 | ||
55dbfcd0 CYT |
1003 | /* Try a bunch of names for TXCO */ |
1004 | static struct clk *bcm_get_txco(struct device *dev) | |
1005 | { | |
1006 | struct clk *clk; | |
1007 | ||
1008 | /* New explicit name */ | |
1009 | clk = devm_clk_get(dev, "txco"); | |
1010 | if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER) | |
1011 | return clk; | |
1012 | ||
1013 | /* Deprecated name */ | |
1014 | clk = devm_clk_get(dev, "extclk"); | |
1015 | if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER) | |
1016 | return clk; | |
1017 | ||
1018 | /* Original code used no name at all */ | |
1019 | return devm_clk_get(dev, NULL); | |
1020 | } | |
1021 | ||
42ef18f0 | 1022 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 1023 | { |
2b05393b | 1024 | const struct dmi_system_id *dmi_id; |
75d11676 | 1025 | int err; |
2b05393b | 1026 | |
c0d3ce58 | 1027 | dev->name = dev_name(dev->dev); |
0395ffc1 | 1028 | |
4c33162c LW |
1029 | if (x86_apple_machine && !bcm_apple_get_resources(dev)) |
1030 | return 0; | |
1031 | ||
55dbfcd0 | 1032 | dev->txco_clk = bcm_get_txco(dev->dev); |
89ab37b4 | 1033 | |
28ac03b9 | 1034 | /* Handle deferred probing */ |
55dbfcd0 CYT |
1035 | if (dev->txco_clk == ERR_PTR(-EPROBE_DEFER)) |
1036 | return PTR_ERR(dev->txco_clk); | |
28ac03b9 | 1037 | |
8c08947b | 1038 | /* Ignore all other errors as before */ |
55dbfcd0 CYT |
1039 | if (IS_ERR(dev->txco_clk)) |
1040 | dev->txco_clk = NULL; | |
8c08947b | 1041 | |
90bc07cc CYT |
1042 | dev->lpo_clk = devm_clk_get(dev->dev, "lpo"); |
1043 | if (dev->lpo_clk == ERR_PTR(-EPROBE_DEFER)) | |
1044 | return PTR_ERR(dev->lpo_clk); | |
1045 | ||
1046 | if (IS_ERR(dev->lpo_clk)) | |
1047 | dev->lpo_clk = NULL; | |
1048 | ||
1049 | /* Check if we accidentally fetched the lpo clock twice */ | |
1050 | if (dev->lpo_clk && clk_is_match(dev->lpo_clk, dev->txco_clk)) { | |
1051 | devm_clk_put(dev->dev, dev->txco_clk); | |
1052 | dev->txco_clk = NULL; | |
1053 | } | |
1054 | ||
ab2f336c SW |
1055 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
1056 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
1057 | if (IS_ERR(dev->device_wakeup)) |
1058 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 1059 | |
ab2f336c SW |
1060 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
1061 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
1062 | if (IS_ERR(dev->shutdown)) |
1063 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 1064 | |
2f407966 LW |
1065 | dev->reset = devm_gpiod_get_optional(dev->dev, "reset", |
1066 | GPIOD_OUT_LOW); | |
1067 | if (IS_ERR(dev->reset)) | |
1068 | return PTR_ERR(dev->reset); | |
1069 | ||
8353b4a6 LW |
1070 | dev->set_device_wakeup = bcm_gpio_set_device_wakeup; |
1071 | dev->set_shutdown = bcm_gpio_set_shutdown; | |
1072 | ||
75d11676 CYT |
1073 | dev->supplies[0].supply = "vbat"; |
1074 | dev->supplies[1].supply = "vddio"; | |
1075 | err = devm_regulator_bulk_get(dev->dev, BCM_NUM_SUPPLIES, | |
1076 | dev->supplies); | |
1077 | if (err) | |
1078 | return err; | |
1079 | ||
6cc4396c | 1080 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
1081 | if (dev->irq <= 0) { |
1082 | struct gpio_desc *gpio; | |
1083 | ||
c0d3ce58 | 1084 | gpio = devm_gpiod_get_optional(dev->dev, "host-wakeup", |
6cc4396c FD |
1085 | GPIOD_IN); |
1086 | if (IS_ERR(gpio)) | |
1087 | return PTR_ERR(gpio); | |
1088 | ||
1089 | dev->irq = gpiod_to_irq(gpio); | |
1090 | } | |
1091 | ||
2b05393b HG |
1092 | dmi_id = dmi_first_match(bcm_broken_irq_dmi_table); |
1093 | if (dmi_id) { | |
1094 | dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n", | |
1095 | dmi_id->ident); | |
1096 | dev->irq = 0; | |
1097 | } | |
1098 | ||
5954cdf1 | 1099 | dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
1100 | return 0; |
1101 | } | |
1102 | ||
1103 | #ifdef CONFIG_ACPI | |
1104 | static int bcm_acpi_probe(struct bcm_device *dev) | |
1105 | { | |
212d7183 | 1106 | LIST_HEAD(resources); |
212d7183 | 1107 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; |
9d54fd6a | 1108 | struct resource_entry *entry; |
212d7183 AS |
1109 | int ret; |
1110 | ||
ae056908 | 1111 | /* Retrieve UART ACPI info */ |
a4de1567 | 1112 | dev->gpio_int_idx = -1; |
c0d3ce58 | 1113 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 1114 | &resources, bcm_resource, dev); |
5be00284 JN |
1115 | if (ret < 0) |
1116 | return ret; | |
9d54fd6a HG |
1117 | |
1118 | resource_list_for_each_entry(entry, &resources) { | |
1119 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
1120 | dev->irq = entry->res->start; | |
1121 | break; | |
1122 | } | |
1123 | } | |
09dbf1b7 | 1124 | acpi_dev_free_resource_list(&resources); |
ae056908 | 1125 | |
a4de1567 HG |
1126 | /* If the DSDT uses an Interrupt resource for the IRQ, then there are |
1127 | * only 2 GPIO resources, we use the irq-last mapping for this, since | |
1128 | * we already have an irq the 3th / last mapping will not be used. | |
1129 | */ | |
1130 | if (dev->irq) | |
1131 | gpio_mapping = acpi_bcm_int_last_gpios; | |
1132 | else if (dev->gpio_int_idx == 0) | |
1133 | gpio_mapping = acpi_bcm_int_first_gpios; | |
1134 | else if (dev->gpio_int_idx == 2) | |
1135 | gpio_mapping = acpi_bcm_int_last_gpios; | |
1136 | else | |
1137 | dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n", | |
1138 | dev->gpio_int_idx); | |
1139 | ||
1140 | /* Warn if our expectations are not met. */ | |
1141 | if (dev->gpio_count != (dev->irq ? 2 : 3)) | |
1142 | dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n", | |
1143 | dev->gpio_count); | |
1144 | ||
1145 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); | |
1146 | if (ret) | |
1147 | return ret; | |
1148 | ||
e09070c5 HG |
1149 | if (irq_polarity != -1) { |
1150 | dev->irq_active_low = irq_polarity; | |
1151 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
1152 | dev->irq_active_low ? "low" : "high"); | |
5cebdfea FD |
1153 | } |
1154 | ||
0395ffc1 FD |
1155 | return 0; |
1156 | } | |
50d78bcf FD |
1157 | #else |
1158 | static int bcm_acpi_probe(struct bcm_device *dev) | |
1159 | { | |
1160 | return -EINVAL; | |
1161 | } | |
1162 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 1163 | |
8a920568 HG |
1164 | static int bcm_of_probe(struct bcm_device *bdev) |
1165 | { | |
1166 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); | |
eb762b94 APS |
1167 | device_property_read_u8_array(bdev->dev, "brcm,bt-pcm-int-params", |
1168 | bdev->pcm_int_params, 5); | |
f25a96c8 | 1169 | bdev->irq = of_irq_get_byname(bdev->dev->of_node, "host-wakeup"); |
b25e4df4 MM |
1170 | bdev->irq_active_low = irq_get_trigger_type(bdev->irq) |
1171 | & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW); | |
8a920568 HG |
1172 | return 0; |
1173 | } | |
1174 | ||
0395ffc1 FD |
1175 | static int bcm_probe(struct platform_device *pdev) |
1176 | { | |
1177 | struct bcm_device *dev; | |
0395ffc1 FD |
1178 | int ret; |
1179 | ||
1180 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
1181 | if (!dev) | |
1182 | return -ENOMEM; | |
1183 | ||
c0d3ce58 | 1184 | dev->dev = &pdev->dev; |
4a56f891 | 1185 | dev->irq = platform_get_irq(pdev, 0); |
0395ffc1 | 1186 | |
eb762b94 APS |
1187 | /* Initialize routing field to an unused value */ |
1188 | dev->pcm_int_params[0] = 0xff; | |
1189 | ||
201762e2 | 1190 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 1191 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
1192 | if (ret) |
1193 | return ret; | |
1194 | } | |
1195 | ||
42ef18f0 | 1196 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
1197 | if (ret) |
1198 | return ret; | |
0395ffc1 FD |
1199 | |
1200 | platform_set_drvdata(pdev, dev); | |
1201 | ||
1202 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
1203 | ||
1204 | /* Place this instance on the device list */ | |
bb3ea16a | 1205 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1206 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 1207 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1208 | |
8bfa7e1e LW |
1209 | ret = bcm_gpio_set_power(dev, false); |
1210 | if (ret) | |
1211 | dev_err(&pdev->dev, "Failed to power down\n"); | |
0395ffc1 FD |
1212 | |
1213 | return 0; | |
1214 | } | |
1215 | ||
1216 | static int bcm_remove(struct platform_device *pdev) | |
1217 | { | |
1218 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
1219 | ||
bb3ea16a | 1220 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1221 | list_del(&dev->list); |
bb3ea16a | 1222 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1223 | |
0395ffc1 FD |
1224 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
1225 | ||
1226 | return 0; | |
1227 | } | |
1228 | ||
bdd8818e MH |
1229 | static const struct hci_uart_proto bcm_proto = { |
1230 | .id = HCI_UART_BCM, | |
143f0a28 | 1231 | .name = "Broadcom", |
aee61f7a | 1232 | .manufacturer = 15, |
61b2fc2b | 1233 | .init_speed = 115200, |
bdd8818e MH |
1234 | .open = bcm_open, |
1235 | .close = bcm_close, | |
1236 | .flush = bcm_flush, | |
1237 | .setup = bcm_setup, | |
61b2fc2b | 1238 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
1239 | .recv = bcm_recv, |
1240 | .enqueue = bcm_enqueue, | |
1241 | .dequeue = bcm_dequeue, | |
1242 | }; | |
1243 | ||
0395ffc1 FD |
1244 | #ifdef CONFIG_ACPI |
1245 | static const struct acpi_device_id bcm_acpi_match[] = { | |
61121502 HG |
1246 | { "BCM2E00" }, |
1247 | { "BCM2E01" }, | |
1248 | { "BCM2E02" }, | |
1249 | { "BCM2E03" }, | |
1250 | { "BCM2E04" }, | |
1251 | { "BCM2E05" }, | |
1252 | { "BCM2E06" }, | |
1253 | { "BCM2E07" }, | |
1254 | { "BCM2E08" }, | |
1255 | { "BCM2E09" }, | |
1256 | { "BCM2E0A" }, | |
1257 | { "BCM2E0B" }, | |
1258 | { "BCM2E0C" }, | |
1259 | { "BCM2E0D" }, | |
1260 | { "BCM2E0E" }, | |
1261 | { "BCM2E0F" }, | |
1262 | { "BCM2E10" }, | |
1263 | { "BCM2E11" }, | |
1264 | { "BCM2E12" }, | |
1265 | { "BCM2E13" }, | |
1266 | { "BCM2E14" }, | |
1267 | { "BCM2E15" }, | |
1268 | { "BCM2E16" }, | |
1269 | { "BCM2E17" }, | |
1270 | { "BCM2E18" }, | |
1271 | { "BCM2E19" }, | |
a4de1567 | 1272 | { "BCM2E1A" }, |
61121502 HG |
1273 | { "BCM2E1B" }, |
1274 | { "BCM2E1C" }, | |
1275 | { "BCM2E1D" }, | |
1276 | { "BCM2E1F" }, | |
1277 | { "BCM2E20" }, | |
1278 | { "BCM2E21" }, | |
1279 | { "BCM2E22" }, | |
1280 | { "BCM2E23" }, | |
1281 | { "BCM2E24" }, | |
1282 | { "BCM2E25" }, | |
1283 | { "BCM2E26" }, | |
1284 | { "BCM2E27" }, | |
1285 | { "BCM2E28" }, | |
1286 | { "BCM2E29" }, | |
1287 | { "BCM2E2A" }, | |
1288 | { "BCM2E2B" }, | |
1289 | { "BCM2E2C" }, | |
1290 | { "BCM2E2D" }, | |
1291 | { "BCM2E2E" }, | |
1292 | { "BCM2E2F" }, | |
1293 | { "BCM2E30" }, | |
1294 | { "BCM2E31" }, | |
1295 | { "BCM2E32" }, | |
1296 | { "BCM2E33" }, | |
1297 | { "BCM2E34" }, | |
1298 | { "BCM2E35" }, | |
1299 | { "BCM2E36" }, | |
1300 | { "BCM2E37" }, | |
a4de1567 HG |
1301 | { "BCM2E38" }, |
1302 | { "BCM2E39" }, | |
1303 | { "BCM2E3A" }, | |
61121502 HG |
1304 | { "BCM2E3B" }, |
1305 | { "BCM2E3C" }, | |
a4de1567 | 1306 | { "BCM2E3D" }, |
61121502 | 1307 | { "BCM2E3E" }, |
a4de1567 HG |
1308 | { "BCM2E3F" }, |
1309 | { "BCM2E40" }, | |
61121502 HG |
1310 | { "BCM2E41" }, |
1311 | { "BCM2E42" }, | |
1312 | { "BCM2E43" }, | |
1313 | { "BCM2E44" }, | |
1314 | { "BCM2E45" }, | |
1315 | { "BCM2E46" }, | |
1316 | { "BCM2E47" }, | |
1317 | { "BCM2E48" }, | |
1318 | { "BCM2E49" }, | |
1319 | { "BCM2E4A" }, | |
1320 | { "BCM2E4B" }, | |
1321 | { "BCM2E4C" }, | |
1322 | { "BCM2E4D" }, | |
1323 | { "BCM2E4E" }, | |
1324 | { "BCM2E4F" }, | |
1325 | { "BCM2E50" }, | |
1326 | { "BCM2E51" }, | |
1327 | { "BCM2E52" }, | |
1328 | { "BCM2E53" }, | |
a4de1567 HG |
1329 | { "BCM2E54" }, |
1330 | { "BCM2E55" }, | |
61121502 HG |
1331 | { "BCM2E56" }, |
1332 | { "BCM2E57" }, | |
1333 | { "BCM2E58" }, | |
1334 | { "BCM2E59" }, | |
1335 | { "BCM2E5A" }, | |
1336 | { "BCM2E5B" }, | |
1337 | { "BCM2E5C" }, | |
1338 | { "BCM2E5D" }, | |
1339 | { "BCM2E5E" }, | |
1340 | { "BCM2E5F" }, | |
1341 | { "BCM2E60" }, | |
1342 | { "BCM2E61" }, | |
1343 | { "BCM2E62" }, | |
1344 | { "BCM2E63" }, | |
a4de1567 HG |
1345 | { "BCM2E64" }, |
1346 | { "BCM2E65" }, | |
61121502 | 1347 | { "BCM2E66" }, |
a4de1567 | 1348 | { "BCM2E67" }, |
61121502 HG |
1349 | { "BCM2E68" }, |
1350 | { "BCM2E69" }, | |
1351 | { "BCM2E6B" }, | |
1352 | { "BCM2E6D" }, | |
1353 | { "BCM2E6E" }, | |
1354 | { "BCM2E6F" }, | |
1355 | { "BCM2E70" }, | |
a4de1567 HG |
1356 | { "BCM2E71" }, |
1357 | { "BCM2E72" }, | |
61121502 | 1358 | { "BCM2E73" }, |
a4de1567 | 1359 | { "BCM2E74" }, |
61121502 HG |
1360 | { "BCM2E75" }, |
1361 | { "BCM2E76" }, | |
1362 | { "BCM2E77" }, | |
1363 | { "BCM2E78" }, | |
1364 | { "BCM2E79" }, | |
1365 | { "BCM2E7A" }, | |
a4de1567 HG |
1366 | { "BCM2E7B" }, |
1367 | { "BCM2E7C" }, | |
61121502 | 1368 | { "BCM2E7D" }, |
a4de1567 | 1369 | { "BCM2E7E" }, |
61121502 HG |
1370 | { "BCM2E7F" }, |
1371 | { "BCM2E80" }, | |
1372 | { "BCM2E81" }, | |
1373 | { "BCM2E82" }, | |
a4de1567 HG |
1374 | { "BCM2E83" }, |
1375 | { "BCM2E84" }, | |
61121502 HG |
1376 | { "BCM2E85" }, |
1377 | { "BCM2E86" }, | |
1378 | { "BCM2E87" }, | |
1379 | { "BCM2E88" }, | |
1380 | { "BCM2E89" }, | |
1381 | { "BCM2E8A" }, | |
1382 | { "BCM2E8B" }, | |
1383 | { "BCM2E8C" }, | |
1384 | { "BCM2E8D" }, | |
1385 | { "BCM2E8E" }, | |
a4de1567 | 1386 | { "BCM2E90" }, |
61121502 HG |
1387 | { "BCM2E92" }, |
1388 | { "BCM2E93" }, | |
1389 | { "BCM2E94" }, | |
a4de1567 HG |
1390 | { "BCM2E95" }, |
1391 | { "BCM2E96" }, | |
61121502 HG |
1392 | { "BCM2E97" }, |
1393 | { "BCM2E98" }, | |
1394 | { "BCM2E99" }, | |
1395 | { "BCM2E9A" }, | |
1396 | { "BCM2E9B" }, | |
1397 | { "BCM2E9C" }, | |
1398 | { "BCM2E9D" }, | |
1399 | { "BCM2EA0" }, | |
1400 | { "BCM2EA1" }, | |
1401 | { "BCM2EA2" }, | |
1402 | { "BCM2EA3" }, | |
a4de1567 | 1403 | { "BCM2EA4" }, |
61121502 HG |
1404 | { "BCM2EA5" }, |
1405 | { "BCM2EA6" }, | |
1406 | { "BCM2EA7" }, | |
1407 | { "BCM2EA8" }, | |
1408 | { "BCM2EA9" }, | |
a4de1567 | 1409 | { "BCM2EAA" }, |
61121502 HG |
1410 | { "BCM2EAB" }, |
1411 | { "BCM2EAC" }, | |
0395ffc1 FD |
1412 | { }, |
1413 | }; | |
1414 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
1415 | #endif | |
1416 | ||
8a920568 | 1417 | /* suspend and resume callbacks */ |
e88ab30d FD |
1418 | static const struct dev_pm_ops bcm_pm_ops = { |
1419 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
1420 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
1421 | }; | |
118612fb | 1422 | |
0395ffc1 FD |
1423 | static struct platform_driver bcm_driver = { |
1424 | .probe = bcm_probe, | |
1425 | .remove = bcm_remove, | |
1426 | .driver = { | |
1427 | .name = "hci_bcm", | |
1428 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 1429 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
1430 | }, |
1431 | }; | |
1432 | ||
33cd149e LP |
1433 | static int bcm_serdev_probe(struct serdev_device *serdev) |
1434 | { | |
8a920568 | 1435 | struct bcm_device *bcmdev; |
5d6f3910 | 1436 | const struct bcm_device_data *data; |
33cd149e LP |
1437 | int err; |
1438 | ||
1439 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
1440 | if (!bcmdev) | |
1441 | return -ENOMEM; | |
1442 | ||
8a920568 | 1443 | bcmdev->dev = &serdev->dev; |
81a19053 | 1444 | #ifdef CONFIG_PM |
8a920568 | 1445 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1446 | #endif |
8a920568 | 1447 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1448 | serdev_device_set_drvdata(serdev, bcmdev); |
1449 | ||
eb762b94 APS |
1450 | /* Initialize routing field to an unused value */ |
1451 | bcmdev->pcm_int_params[0] = 0xff; | |
1452 | ||
8a920568 HG |
1453 | if (has_acpi_companion(&serdev->dev)) |
1454 | err = bcm_acpi_probe(bcmdev); | |
1455 | else | |
1456 | err = bcm_of_probe(bcmdev); | |
1457 | if (err) | |
1458 | return err; | |
33cd149e | 1459 | |
8a920568 HG |
1460 | err = bcm_get_resources(bcmdev); |
1461 | if (err) | |
1462 | return err; | |
1463 | ||
f3863f1d MH |
1464 | if (!bcmdev->shutdown) { |
1465 | dev_warn(&serdev->dev, | |
1466 | "No reset resource, using default baud rate\n"); | |
1467 | bcmdev->oper_speed = bcmdev->init_speed; | |
1468 | } | |
1469 | ||
8bfa7e1e LW |
1470 | err = bcm_gpio_set_power(bcmdev, false); |
1471 | if (err) | |
1472 | dev_err(&serdev->dev, "Failed to power down\n"); | |
8a920568 | 1473 | |
5d6f3910 | 1474 | data = device_get_match_data(bcmdev->dev); |
e601daed | 1475 | if (data) { |
5d6f3910 | 1476 | bcmdev->no_early_set_baudrate = data->no_early_set_baudrate; |
e601daed SW |
1477 | bcmdev->drive_rts_on_open = data->drive_rts_on_open; |
1478 | } | |
5d6f3910 | 1479 | |
8a920568 | 1480 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); |
33cd149e LP |
1481 | } |
1482 | ||
1483 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1484 | { | |
8a920568 | 1485 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1486 | |
8a920568 | 1487 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1488 | } |
1489 | ||
1490 | #ifdef CONFIG_OF | |
5d6f3910 APS |
1491 | static struct bcm_device_data bcm4354_device_data = { |
1492 | .no_early_set_baudrate = true, | |
1493 | }; | |
1494 | ||
e601daed SW |
1495 | static struct bcm_device_data bcm43438_device_data = { |
1496 | .drive_rts_on_open = true, | |
1497 | }; | |
1498 | ||
33cd149e | 1499 | static const struct of_device_id bcm_bluetooth_of_match[] = { |
92ffe0db | 1500 | { .compatible = "brcm,bcm20702a1" }, |
88d1cc96 | 1501 | { .compatible = "brcm,bcm4329-bt" }, |
81534d48 LW |
1502 | { .compatible = "brcm,bcm4330-bt" }, |
1503 | { .compatible = "brcm,bcm4334-bt" }, | |
52c8c7a7 | 1504 | { .compatible = "brcm,bcm4345c5" }, |
66904555 | 1505 | { .compatible = "brcm,bcm4330-bt" }, |
e601daed | 1506 | { .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data }, |
5d6f3910 | 1507 | { .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data }, |
1199ab4c | 1508 | { .compatible = "brcm,bcm4335a0" }, |
33cd149e LP |
1509 | { }, |
1510 | }; | |
1511 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1512 | #endif | |
1513 | ||
1514 | static struct serdev_device_driver bcm_serdev_driver = { | |
1515 | .probe = bcm_serdev_probe, | |
1516 | .remove = bcm_serdev_remove, | |
1517 | .driver = { | |
1518 | .name = "hci_uart_bcm", | |
1519 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1520 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1521 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1522 | }, |
1523 | }; | |
1524 | ||
bdd8818e MH |
1525 | int __init bcm_init(void) |
1526 | { | |
33cd149e LP |
1527 | /* For now, we need to keep both platform device |
1528 | * driver (ACPI generated) and serdev driver (DT). | |
1529 | */ | |
0395ffc1 | 1530 | platform_driver_register(&bcm_driver); |
33cd149e | 1531 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1532 | |
bdd8818e MH |
1533 | return hci_uart_register_proto(&bcm_proto); |
1534 | } | |
1535 | ||
1536 | int __exit bcm_deinit(void) | |
1537 | { | |
0395ffc1 | 1538 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1539 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1540 | |
bdd8818e MH |
1541 | return hci_uart_unregister_proto(&bcm_proto); |
1542 | } |