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