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> | |
27e8527e | 23 | #include <linux/gpio/machine.h> |
0395ffc1 | 24 | #include <linux/tty.h> |
6cc4396c | 25 | #include <linux/interrupt.h> |
5cebdfea | 26 | #include <linux/dmi.h> |
e88ab30d | 27 | #include <linux/pm_runtime.h> |
33cd149e | 28 | #include <linux/serdev.h> |
e9a2dd26 MH |
29 | |
30 | #include <net/bluetooth/bluetooth.h> | |
31 | #include <net/bluetooth/hci_core.h> | |
32 | ||
bdd8818e | 33 | #include "btbcm.h" |
e9a2dd26 | 34 | #include "hci_uart.h" |
bdd8818e | 35 | |
01d5e44a MH |
36 | #define BCM_NULL_PKT 0x00 |
37 | #define BCM_NULL_SIZE 0 | |
38 | ||
94c58132 MH |
39 | #define BCM_LM_DIAG_PKT 0x07 |
40 | #define BCM_LM_DIAG_SIZE 63 | |
41 | ||
22bba805 JB |
42 | #define BCM_TYPE49_PKT 0x31 |
43 | #define BCM_TYPE49_SIZE 0 | |
44 | ||
45 | #define BCM_TYPE52_PKT 0x34 | |
46 | #define BCM_TYPE52_SIZE 0 | |
47 | ||
e88ab30d FD |
48 | #define BCM_AUTOSUSPEND_DELAY 5000 /* default autosleep delay */ |
49 | ||
75d11676 CYT |
50 | #define BCM_NUM_SUPPLIES 2 |
51 | ||
5d6f3910 APS |
52 | /** |
53 | * struct bcm_device_data - device specific data | |
54 | * @no_early_set_baudrate: Disallow set baudrate before driver setup() | |
67cbdd74 | 55 | * @drive_rts_on_open: drive RTS signal on ->open() when platform requires it |
02d056a3 | 56 | * @no_uart_clock_set: UART clock set command for >3Mbps mode is unavailable |
46459cb6 | 57 | * @max_autobaud_speed: max baudrate supported by device in autobaud mode |
ce439473 | 58 | * @max_speed: max baudrate supported |
5d6f3910 APS |
59 | */ |
60 | struct bcm_device_data { | |
61 | bool no_early_set_baudrate; | |
e601daed | 62 | bool drive_rts_on_open; |
02d056a3 | 63 | bool no_uart_clock_set; |
46459cb6 | 64 | u32 max_autobaud_speed; |
ce439473 | 65 | u32 max_speed; |
5d6f3910 APS |
66 | }; |
67 | ||
b7c2abac LW |
68 | /** |
69 | * struct bcm_device - device driver resources | |
70 | * @serdev_hu: HCI UART controller struct | |
71 | * @list: bcm_device_list node | |
72 | * @dev: physical UART slave | |
73 | * @name: device name logged by bt_dev_*() functions | |
74 | * @device_wakeup: BT_WAKE pin, | |
75 | * assert = Bluetooth device must wake up or remain awake, | |
76 | * deassert = Bluetooth device may sleep when sleep criteria are met | |
77 | * @shutdown: BT_REG_ON pin, | |
78 | * power up or power down Bluetooth device internal regulators | |
2f407966 LW |
79 | * @reset: BT_RST_N pin, |
80 | * active low resets the Bluetooth logic core | |
8353b4a6 | 81 | * @set_device_wakeup: callback to toggle BT_WAKE pin |
4c33162c | 82 | * either by accessing @device_wakeup or by calling @btlp |
8353b4a6 | 83 | * @set_shutdown: callback to toggle BT_REG_ON pin |
4c33162c LW |
84 | * either by accessing @shutdown or by calling @btpu/@btpd |
85 | * @btlp: Apple ACPI method to toggle BT_WAKE pin ("Bluetooth Low Power") | |
86 | * @btpu: Apple ACPI method to drive BT_REG_ON pin high ("Bluetooth Power Up") | |
87 | * @btpd: Apple ACPI method to drive BT_REG_ON pin low ("Bluetooth Power Down") | |
67cbdd74 AS |
88 | * @gpio_count: internal counter for GPIO resources associated with ACPI device |
89 | * @gpio_int_idx: index in _CRS for GpioInt() resource | |
55dbfcd0 | 90 | * @txco_clk: external reference frequency clock used by Bluetooth device |
90bc07cc | 91 | * @lpo_clk: external LPO clock used by Bluetooth device |
75d11676 CYT |
92 | * @supplies: VBAT and VDDIO supplies used by Bluetooth device |
93 | * @res_enabled: whether clocks and supplies are prepared and enabled | |
b7c2abac LW |
94 | * @init_speed: default baudrate of Bluetooth device; |
95 | * the host UART is initially set to this baudrate so that | |
96 | * it can configure the Bluetooth device for @oper_speed | |
97 | * @oper_speed: preferred baudrate of Bluetooth device; | |
98 | * set to 0 if @init_speed is already the preferred baudrate | |
99 | * @irq: interrupt triggered by HOST_WAKE_BT pin | |
100 | * @irq_active_low: whether @irq is active low | |
67cbdd74 | 101 | * @irq_acquired: flag to show if IRQ handler has been assigned |
b7c2abac LW |
102 | * @hu: pointer to HCI UART controller struct, |
103 | * used to disable flow control during runtime suspend and system sleep | |
104 | * @is_suspended: whether flow control is currently disabled | |
5d6f3910 | 105 | * @no_early_set_baudrate: don't set_baudrate before setup() |
67cbdd74 | 106 | * @drive_rts_on_open: drive RTS signal on ->open() when platform requires it |
02d056a3 | 107 | * @no_uart_clock_set: UART clock set command for >3Mbps mode is unavailable |
67cbdd74 | 108 | * @pcm_int_params: keep the initial PCM configuration |
af35e28f | 109 | * @use_autobaud_mode: start Bluetooth device in autobaud mode |
46459cb6 | 110 | * @max_autobaud_speed: max baudrate supported by device in autobaud mode |
b7c2abac | 111 | */ |
0395ffc1 | 112 | struct bcm_device { |
8a920568 HG |
113 | /* Must be the first member, hci_serdev.c expects this. */ |
114 | struct hci_uart serdev_hu; | |
0395ffc1 FD |
115 | struct list_head list; |
116 | ||
c0d3ce58 | 117 | struct device *dev; |
0395ffc1 FD |
118 | |
119 | const char *name; | |
120 | struct gpio_desc *device_wakeup; | |
121 | struct gpio_desc *shutdown; | |
2f407966 | 122 | struct gpio_desc *reset; |
8353b4a6 LW |
123 | int (*set_device_wakeup)(struct bcm_device *, bool); |
124 | int (*set_shutdown)(struct bcm_device *, bool); | |
4c33162c LW |
125 | #ifdef CONFIG_ACPI |
126 | acpi_handle btlp, btpu, btpd; | |
a4de1567 HG |
127 | int gpio_count; |
128 | int gpio_int_idx; | |
4c33162c | 129 | #endif |
0395ffc1 | 130 | |
55dbfcd0 | 131 | struct clk *txco_clk; |
90bc07cc | 132 | struct clk *lpo_clk; |
75d11676 CYT |
133 | struct regulator_bulk_data supplies[BCM_NUM_SUPPLIES]; |
134 | bool res_enabled; | |
ae056908 FD |
135 | |
136 | u32 init_speed; | |
74183a1c | 137 | u32 oper_speed; |
6cc4396c | 138 | int irq; |
227630cc | 139 | bool irq_active_low; |
81bd5d0c | 140 | bool irq_acquired; |
118612fb | 141 | |
b7a622a2 | 142 | #ifdef CONFIG_PM |
118612fb | 143 | struct hci_uart *hu; |
b7c2abac | 144 | bool is_suspended; |
118612fb | 145 | #endif |
5d6f3910 | 146 | bool no_early_set_baudrate; |
e601daed | 147 | bool drive_rts_on_open; |
02d056a3 | 148 | bool no_uart_clock_set; |
af35e28f | 149 | bool use_autobaud_mode; |
eb762b94 | 150 | u8 pcm_int_params[5]; |
46459cb6 | 151 | u32 max_autobaud_speed; |
0395ffc1 FD |
152 | }; |
153 | ||
33cd149e | 154 | /* generic bcm uart resources */ |
bdd8818e | 155 | struct bcm_data { |
0395ffc1 FD |
156 | struct sk_buff *rx_skb; |
157 | struct sk_buff_head txq; | |
158 | ||
159 | struct bcm_device *dev; | |
bdd8818e MH |
160 | }; |
161 | ||
0395ffc1 | 162 | /* List of BCM BT UART devices */ |
bb3ea16a | 163 | static DEFINE_MUTEX(bcm_device_lock); |
0395ffc1 FD |
164 | static LIST_HEAD(bcm_device_list); |
165 | ||
e09070c5 HG |
166 | static int irq_polarity = -1; |
167 | module_param(irq_polarity, int, 0444); | |
168 | MODULE_PARM_DESC(irq_polarity, "IRQ polarity 0: active-high 1: active-low"); | |
169 | ||
33cd149e LP |
170 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
171 | { | |
172 | if (hu->serdev) | |
173 | serdev_device_set_baudrate(hu->serdev, speed); | |
174 | else | |
175 | hci_uart_set_baudrate(hu, speed); | |
176 | } | |
177 | ||
61b2fc2b FD |
178 | static int bcm_set_baudrate(struct hci_uart *hu, unsigned int speed) |
179 | { | |
180 | struct hci_dev *hdev = hu->hdev; | |
02d056a3 | 181 | struct bcm_data *bcm = hu->priv; |
61b2fc2b FD |
182 | struct sk_buff *skb; |
183 | struct bcm_update_uart_baud_rate param; | |
184 | ||
02d056a3 | 185 | if (speed > 3000000 && !bcm->dev->no_uart_clock_set) { |
61b2fc2b FD |
186 | struct bcm_write_uart_clock_setting clock; |
187 | ||
188 | clock.type = BCM_UART_CLOCK_48MHZ; | |
189 | ||
65ad07c9 | 190 | bt_dev_dbg(hdev, "Set Controller clock (%d)", clock.type); |
61b2fc2b FD |
191 | |
192 | /* This Broadcom specific command changes the UART's controller | |
193 | * clock for baud rate > 3000000. | |
194 | */ | |
195 | skb = __hci_cmd_sync(hdev, 0xfc45, 1, &clock, 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 clock (%d)", |
199 | err); | |
61b2fc2b FD |
200 | return err; |
201 | } | |
202 | ||
203 | kfree_skb(skb); | |
204 | } | |
205 | ||
65ad07c9 | 206 | bt_dev_dbg(hdev, "Set Controller UART speed to %d bit/s", speed); |
61b2fc2b FD |
207 | |
208 | param.zero = cpu_to_le16(0); | |
209 | param.baud_rate = cpu_to_le32(speed); | |
210 | ||
211 | /* This Broadcom specific command changes the UART's controller baud | |
212 | * rate. | |
213 | */ | |
214 | skb = __hci_cmd_sync(hdev, 0xfc18, sizeof(param), ¶m, | |
215 | HCI_INIT_TIMEOUT); | |
216 | if (IS_ERR(skb)) { | |
217 | int err = PTR_ERR(skb); | |
65ad07c9 FD |
218 | bt_dev_err(hdev, "BCM: failed to write update baudrate (%d)", |
219 | err); | |
61b2fc2b FD |
220 | return err; |
221 | } | |
222 | ||
223 | kfree_skb(skb); | |
224 | ||
225 | return 0; | |
226 | } | |
227 | ||
917522aa | 228 | /* bcm_device_exists should be protected by bcm_device_lock */ |
0395ffc1 FD |
229 | static bool bcm_device_exists(struct bcm_device *device) |
230 | { | |
231 | struct list_head *p; | |
232 | ||
81a19053 | 233 | #ifdef CONFIG_PM |
8a920568 HG |
234 | /* Devices using serdev always exist */ |
235 | if (device && device->hu && device->hu->serdev) | |
236 | return true; | |
81a19053 | 237 | #endif |
8a920568 | 238 | |
0395ffc1 FD |
239 | list_for_each(p, &bcm_device_list) { |
240 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
241 | ||
242 | if (device == dev) | |
243 | return true; | |
244 | } | |
245 | ||
246 | return false; | |
247 | } | |
248 | ||
249 | static int bcm_gpio_set_power(struct bcm_device *dev, bool powered) | |
250 | { | |
8bfa7e1e | 251 | int err; |
0395ffc1 | 252 | |
75d11676 | 253 | if (powered && !dev->res_enabled) { |
62611abc CYT |
254 | /* Intel Macs use bcm_apple_get_resources() and don't |
255 | * have regulator supplies configured. | |
256 | */ | |
257 | if (dev->supplies[0].supply) { | |
258 | err = regulator_bulk_enable(BCM_NUM_SUPPLIES, | |
259 | dev->supplies); | |
260 | if (err) | |
261 | return err; | |
262 | } | |
75d11676 | 263 | |
90bc07cc CYT |
264 | /* LPO clock needs to be 32.768 kHz */ |
265 | err = clk_set_rate(dev->lpo_clk, 32768); | |
266 | if (err) { | |
267 | dev_err(dev->dev, "Could not set LPO clock rate\n"); | |
75d11676 | 268 | goto err_regulator_disable; |
90bc07cc CYT |
269 | } |
270 | ||
271 | err = clk_prepare_enable(dev->lpo_clk); | |
8bfa7e1e | 272 | if (err) |
75d11676 | 273 | goto err_regulator_disable; |
90bc07cc CYT |
274 | |
275 | err = clk_prepare_enable(dev->txco_clk); | |
276 | if (err) | |
277 | goto err_lpo_clk_disable; | |
8bfa7e1e LW |
278 | } |
279 | ||
280 | err = dev->set_shutdown(dev, powered); | |
281 | if (err) | |
90bc07cc | 282 | goto err_txco_clk_disable; |
8bfa7e1e LW |
283 | |
284 | err = dev->set_device_wakeup(dev, powered); | |
285 | if (err) | |
286 | goto err_revert_shutdown; | |
0395ffc1 | 287 | |
75d11676 | 288 | if (!powered && dev->res_enabled) { |
55dbfcd0 | 289 | clk_disable_unprepare(dev->txco_clk); |
90bc07cc | 290 | clk_disable_unprepare(dev->lpo_clk); |
62611abc CYT |
291 | |
292 | /* Intel Macs use bcm_apple_get_resources() and don't | |
293 | * have regulator supplies configured. | |
294 | */ | |
295 | if (dev->supplies[0].supply) | |
296 | regulator_bulk_disable(BCM_NUM_SUPPLIES, | |
297 | dev->supplies); | |
90bc07cc | 298 | } |
0395ffc1 | 299 | |
91927a9b | 300 | /* wait for device to power on and come out of reset */ |
16946de5 | 301 | usleep_range(100000, 120000); |
91927a9b | 302 | |
75d11676 | 303 | dev->res_enabled = powered; |
0395ffc1 FD |
304 | |
305 | return 0; | |
8bfa7e1e LW |
306 | |
307 | err_revert_shutdown: | |
308 | dev->set_shutdown(dev, !powered); | |
90bc07cc | 309 | err_txco_clk_disable: |
75d11676 | 310 | if (powered && !dev->res_enabled) |
55dbfcd0 | 311 | clk_disable_unprepare(dev->txco_clk); |
90bc07cc | 312 | err_lpo_clk_disable: |
75d11676 | 313 | if (powered && !dev->res_enabled) |
90bc07cc | 314 | clk_disable_unprepare(dev->lpo_clk); |
75d11676 CYT |
315 | err_regulator_disable: |
316 | if (powered && !dev->res_enabled) | |
317 | regulator_bulk_disable(BCM_NUM_SUPPLIES, dev->supplies); | |
8bfa7e1e | 318 | return err; |
0395ffc1 FD |
319 | } |
320 | ||
b7a622a2 | 321 | #ifdef CONFIG_PM |
6cc4396c FD |
322 | static irqreturn_t bcm_host_wake(int irq, void *data) |
323 | { | |
324 | struct bcm_device *bdev = data; | |
325 | ||
326 | bt_dev_dbg(bdev, "Host wake IRQ"); | |
327 | ||
b09c6152 HG |
328 | pm_runtime_get(bdev->dev); |
329 | pm_runtime_mark_last_busy(bdev->dev); | |
330 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 331 | |
6cc4396c FD |
332 | return IRQ_HANDLED; |
333 | } | |
334 | ||
335 | static int bcm_request_irq(struct bcm_data *bcm) | |
336 | { | |
337 | struct bcm_device *bdev = bcm->dev; | |
98dc77d5 | 338 | int err; |
6cc4396c | 339 | |
6cc4396c FD |
340 | mutex_lock(&bcm_device_lock); |
341 | if (!bcm_device_exists(bdev)) { | |
342 | err = -ENODEV; | |
343 | goto unlock; | |
344 | } | |
345 | ||
98dc77d5 LP |
346 | if (bdev->irq <= 0) { |
347 | err = -EOPNOTSUPP; | |
348 | goto unlock; | |
349 | } | |
6cc4396c | 350 | |
c0d3ce58 | 351 | err = devm_request_irq(bdev->dev, bdev->irq, bcm_host_wake, |
227630cc HG |
352 | bdev->irq_active_low ? IRQF_TRIGGER_FALLING : |
353 | IRQF_TRIGGER_RISING, | |
354 | "host_wake", bdev); | |
4dc27330 LW |
355 | if (err) { |
356 | bdev->irq = err; | |
98dc77d5 | 357 | goto unlock; |
4dc27330 | 358 | } |
e88ab30d | 359 | |
81bd5d0c MM |
360 | bdev->irq_acquired = true; |
361 | ||
c0d3ce58 | 362 | device_init_wakeup(bdev->dev, true); |
98dc77d5 | 363 | |
c0d3ce58 | 364 | pm_runtime_set_autosuspend_delay(bdev->dev, |
98dc77d5 | 365 | BCM_AUTOSUSPEND_DELAY); |
c0d3ce58 HG |
366 | pm_runtime_use_autosuspend(bdev->dev); |
367 | pm_runtime_set_active(bdev->dev); | |
368 | pm_runtime_enable(bdev->dev); | |
6cc4396c FD |
369 | |
370 | unlock: | |
371 | mutex_unlock(&bcm_device_lock); | |
372 | ||
373 | return err; | |
374 | } | |
375 | ||
376 | static const struct bcm_set_sleep_mode default_sleep_params = { | |
377 | .sleep_mode = 1, /* 0=Disabled, 1=UART, 2=Reserved, 3=USB */ | |
378 | .idle_host = 2, /* idle threshold HOST, in 300ms */ | |
379 | .idle_dev = 2, /* idle threshold device, in 300ms */ | |
380 | .bt_wake_active = 1, /* BT_WAKE active mode: 1 = high, 0 = low */ | |
381 | .host_wake_active = 0, /* HOST_WAKE active mode: 1 = high, 0 = low */ | |
382 | .allow_host_sleep = 1, /* Allow host sleep in SCO flag */ | |
e88ab30d | 383 | .combine_modes = 1, /* Combine sleep and LPM flag */ |
6cc4396c FD |
384 | .tristate_control = 0, /* Allow tri-state control of UART tx flag */ |
385 | /* Irrelevant USB flags */ | |
386 | .usb_auto_sleep = 0, | |
387 | .usb_resume_timeout = 0, | |
ff875960 | 388 | .break_to_host = 0, |
e07c99b0 | 389 | .pulsed_host_wake = 1, |
6cc4396c FD |
390 | }; |
391 | ||
392 | static int bcm_setup_sleep(struct hci_uart *hu) | |
393 | { | |
394 | struct bcm_data *bcm = hu->priv; | |
395 | struct sk_buff *skb; | |
396 | struct bcm_set_sleep_mode sleep_params = default_sleep_params; | |
397 | ||
227630cc | 398 | sleep_params.host_wake_active = !bcm->dev->irq_active_low; |
6cc4396c FD |
399 | |
400 | skb = __hci_cmd_sync(hu->hdev, 0xfc27, sizeof(sleep_params), | |
401 | &sleep_params, HCI_INIT_TIMEOUT); | |
402 | if (IS_ERR(skb)) { | |
403 | int err = PTR_ERR(skb); | |
404 | bt_dev_err(hu->hdev, "Sleep VSC failed (%d)", err); | |
405 | return err; | |
406 | } | |
407 | kfree_skb(skb); | |
408 | ||
409 | bt_dev_dbg(hu->hdev, "Set Sleep Parameters VSC succeeded"); | |
410 | ||
411 | return 0; | |
412 | } | |
413 | #else | |
414 | static inline int bcm_request_irq(struct bcm_data *bcm) { return 0; } | |
415 | static inline int bcm_setup_sleep(struct hci_uart *hu) { return 0; } | |
416 | #endif | |
417 | ||
075e1f5e MH |
418 | static int bcm_set_diag(struct hci_dev *hdev, bool enable) |
419 | { | |
420 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
421 | struct bcm_data *bcm = hu->priv; | |
422 | struct sk_buff *skb; | |
423 | ||
424 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
425 | return -ENETDOWN; | |
426 | ||
427 | skb = bt_skb_alloc(3, GFP_KERNEL); | |
a1857390 DC |
428 | if (!skb) |
429 | return -ENOMEM; | |
075e1f5e | 430 | |
634fef61 JB |
431 | skb_put_u8(skb, BCM_LM_DIAG_PKT); |
432 | skb_put_u8(skb, 0xf0); | |
433 | skb_put_u8(skb, enable); | |
075e1f5e MH |
434 | |
435 | skb_queue_tail(&bcm->txq, skb); | |
436 | hci_uart_tx_wakeup(hu); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
bdd8818e MH |
441 | static int bcm_open(struct hci_uart *hu) |
442 | { | |
443 | struct bcm_data *bcm; | |
0395ffc1 | 444 | struct list_head *p; |
8bfa7e1e | 445 | int err; |
bdd8818e | 446 | |
65ad07c9 | 447 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 448 | |
b36a1552 VD |
449 | if (!hci_uart_has_flow_control(hu)) |
450 | return -EOPNOTSUPP; | |
451 | ||
bdd8818e MH |
452 | bcm = kzalloc(sizeof(*bcm), GFP_KERNEL); |
453 | if (!bcm) | |
454 | return -ENOMEM; | |
455 | ||
456 | skb_queue_head_init(&bcm->txq); | |
457 | ||
458 | hu->priv = bcm; | |
0395ffc1 | 459 | |
8a920568 HG |
460 | mutex_lock(&bcm_device_lock); |
461 | ||
33cd149e | 462 | if (hu->serdev) { |
8a920568 | 463 | bcm->dev = serdev_device_get_drvdata(hu->serdev); |
33cd149e LP |
464 | goto out; |
465 | } | |
466 | ||
95065a61 JH |
467 | if (!hu->tty->dev) |
468 | goto out; | |
469 | ||
0395ffc1 FD |
470 | list_for_each(p, &bcm_device_list) { |
471 | struct bcm_device *dev = list_entry(p, struct bcm_device, list); | |
472 | ||
473 | /* Retrieve saved bcm_device based on parent of the | |
474 | * platform device (saved during device probe) and | |
475 | * parent of tty device used by hci_uart | |
476 | */ | |
c0d3ce58 | 477 | if (hu->tty->dev->parent == dev->dev->parent) { |
0395ffc1 | 478 | bcm->dev = dev; |
b7a622a2 | 479 | #ifdef CONFIG_PM |
118612fb FD |
480 | dev->hu = hu; |
481 | #endif | |
0395ffc1 FD |
482 | break; |
483 | } | |
484 | } | |
485 | ||
95065a61 | 486 | out: |
8a920568 | 487 | if (bcm->dev) { |
af35e28f HJ |
488 | if (bcm->dev->use_autobaud_mode) |
489 | hci_uart_set_flow_control(hu, false); /* Assert BT_UART_CTS_N */ | |
490 | else if (bcm->dev->drive_rts_on_open) | |
e601daed SW |
491 | hci_uart_set_flow_control(hu, true); |
492 | ||
46459cb6 HJ |
493 | if (bcm->dev->use_autobaud_mode && bcm->dev->max_autobaud_speed) |
494 | hu->init_speed = min(bcm->dev->oper_speed, bcm->dev->max_autobaud_speed); | |
495 | else | |
496 | hu->init_speed = bcm->dev->init_speed; | |
5d6f3910 APS |
497 | |
498 | /* If oper_speed is set, ldisc/serdev will set the baudrate | |
499 | * before calling setup() | |
500 | */ | |
9baee415 | 501 | if (!bcm->dev->no_early_set_baudrate && !bcm->dev->use_autobaud_mode) |
5d6f3910 APS |
502 | hu->oper_speed = bcm->dev->oper_speed; |
503 | ||
8bfa7e1e | 504 | err = bcm_gpio_set_power(bcm->dev, true); |
e601daed SW |
505 | |
506 | if (bcm->dev->drive_rts_on_open) | |
507 | hci_uart_set_flow_control(hu, false); | |
508 | ||
8bfa7e1e LW |
509 | if (err) |
510 | goto err_unset_hu; | |
8a920568 HG |
511 | } |
512 | ||
513 | mutex_unlock(&bcm_device_lock); | |
bdd8818e | 514 | return 0; |
8bfa7e1e LW |
515 | |
516 | err_unset_hu: | |
517 | #ifdef CONFIG_PM | |
e9ca0807 | 518 | if (!hu->serdev) |
8c6b8eda | 519 | bcm->dev->hu = NULL; |
8bfa7e1e | 520 | #endif |
8bfa7e1e LW |
521 | mutex_unlock(&bcm_device_lock); |
522 | hu->priv = NULL; | |
523 | kfree(bcm); | |
524 | return err; | |
bdd8818e MH |
525 | } |
526 | ||
527 | static int bcm_close(struct hci_uart *hu) | |
528 | { | |
529 | struct bcm_data *bcm = hu->priv; | |
8a920568 | 530 | struct bcm_device *bdev = NULL; |
8bfa7e1e | 531 | int err; |
bdd8818e | 532 | |
65ad07c9 | 533 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 534 | |
0395ffc1 | 535 | /* Protect bcm->dev against removal of the device or driver */ |
bb3ea16a | 536 | mutex_lock(&bcm_device_lock); |
8a920568 HG |
537 | |
538 | if (hu->serdev) { | |
8a920568 HG |
539 | bdev = serdev_device_get_drvdata(hu->serdev); |
540 | } else if (bcm_device_exists(bcm->dev)) { | |
541 | bdev = bcm->dev; | |
542 | #ifdef CONFIG_PM | |
543 | bdev->hu = NULL; | |
544 | #endif | |
545 | } | |
546 | ||
547 | if (bdev) { | |
81bd5d0c | 548 | if (IS_ENABLED(CONFIG_PM) && bdev->irq_acquired) { |
c0d3ce58 HG |
549 | devm_free_irq(bdev->dev, bdev->irq, bdev); |
550 | device_init_wakeup(bdev->dev, false); | |
f4cf6b7e | 551 | pm_runtime_disable(bdev->dev); |
6cc4396c | 552 | } |
54ba69f9 | 553 | |
8bfa7e1e LW |
554 | err = bcm_gpio_set_power(bdev, false); |
555 | if (err) | |
556 | bt_dev_err(hu->hdev, "Failed to power down"); | |
557 | else | |
558 | pm_runtime_set_suspended(bdev->dev); | |
118612fb | 559 | } |
bb3ea16a | 560 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 561 | |
bdd8818e MH |
562 | skb_queue_purge(&bcm->txq); |
563 | kfree_skb(bcm->rx_skb); | |
564 | kfree(bcm); | |
565 | ||
566 | hu->priv = NULL; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | static int bcm_flush(struct hci_uart *hu) | |
571 | { | |
572 | struct bcm_data *bcm = hu->priv; | |
573 | ||
65ad07c9 | 574 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e MH |
575 | |
576 | skb_queue_purge(&bcm->txq); | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static int bcm_setup(struct hci_uart *hu) | |
582 | { | |
6cc4396c | 583 | struct bcm_data *bcm = hu->priv; |
0287c5d8 | 584 | bool fw_load_done = false; |
af35e28f | 585 | bool use_autobaud_mode = (bcm->dev ? bcm->dev->use_autobaud_mode : 0); |
960ef1d7 | 586 | unsigned int speed; |
6be09b48 FD |
587 | int err; |
588 | ||
65ad07c9 | 589 | bt_dev_dbg(hu->hdev, "hu %p", hu); |
bdd8818e | 590 | |
075e1f5e | 591 | hu->hdev->set_diag = bcm_set_diag; |
bdd8818e MH |
592 | hu->hdev->set_bdaddr = btbcm_set_bdaddr; |
593 | ||
af35e28f | 594 | err = btbcm_initialize(hu->hdev, &fw_load_done, use_autobaud_mode); |
6be09b48 FD |
595 | if (err) |
596 | return err; | |
597 | ||
0287c5d8 | 598 | if (!fw_load_done) |
6be09b48 | 599 | return 0; |
6be09b48 | 600 | |
960ef1d7 | 601 | /* Init speed if any */ |
46459cb6 HJ |
602 | if (bcm->dev && bcm->dev->init_speed) |
603 | speed = bcm->dev->init_speed; | |
960ef1d7 FD |
604 | else if (hu->proto->init_speed) |
605 | speed = hu->proto->init_speed; | |
606 | else | |
607 | speed = 0; | |
608 | ||
609 | if (speed) | |
33cd149e | 610 | host_set_baudrate(hu, speed); |
960ef1d7 FD |
611 | |
612 | /* Operational speed if any */ | |
613 | if (hu->oper_speed) | |
614 | speed = hu->oper_speed; | |
5d6f3910 APS |
615 | else if (bcm->dev && bcm->dev->oper_speed) |
616 | speed = bcm->dev->oper_speed; | |
960ef1d7 FD |
617 | else if (hu->proto->oper_speed) |
618 | speed = hu->proto->oper_speed; | |
619 | else | |
620 | speed = 0; | |
621 | ||
622 | if (speed) { | |
623 | err = bcm_set_baudrate(hu, speed); | |
61b2fc2b | 624 | if (!err) |
33cd149e | 625 | host_set_baudrate(hu, speed); |
61b2fc2b FD |
626 | } |
627 | ||
eb762b94 APS |
628 | /* PCM parameters if provided */ |
629 | if (bcm->dev && bcm->dev->pcm_int_params[0] != 0xff) { | |
630 | struct bcm_set_pcm_int_params params; | |
631 | ||
632 | btbcm_read_pcm_int_params(hu->hdev, ¶ms); | |
633 | ||
634 | memcpy(¶ms, bcm->dev->pcm_int_params, 5); | |
635 | btbcm_write_pcm_int_params(hu->hdev, ¶ms); | |
636 | } | |
637 | ||
af35e28f | 638 | err = btbcm_finalize(hu->hdev, &fw_load_done, use_autobaud_mode); |
6cc4396c FD |
639 | if (err) |
640 | return err; | |
641 | ||
f8c51d28 HG |
642 | /* Some devices ship with the controller default address. |
643 | * Allow the bootloader to set a valid address through the | |
644 | * device tree. | |
645 | */ | |
56b7f325 JH |
646 | if (test_bit(HCI_QUIRK_INVALID_BDADDR, &hu->hdev->quirks)) |
647 | set_bit(HCI_QUIRK_USE_BDADDR_PROPERTY, &hu->hdev->quirks); | |
f8c51d28 | 648 | |
cdd24a20 | 649 | if (!bcm_request_irq(bcm)) |
6cc4396c | 650 | err = bcm_setup_sleep(hu); |
6be09b48 FD |
651 | |
652 | return err; | |
bdd8818e MH |
653 | } |
654 | ||
94c58132 MH |
655 | #define BCM_RECV_LM_DIAG \ |
656 | .type = BCM_LM_DIAG_PKT, \ | |
657 | .hlen = BCM_LM_DIAG_SIZE, \ | |
658 | .loff = 0, \ | |
659 | .lsize = 0, \ | |
660 | .maxlen = BCM_LM_DIAG_SIZE | |
661 | ||
01d5e44a MH |
662 | #define BCM_RECV_NULL \ |
663 | .type = BCM_NULL_PKT, \ | |
664 | .hlen = BCM_NULL_SIZE, \ | |
665 | .loff = 0, \ | |
666 | .lsize = 0, \ | |
667 | .maxlen = BCM_NULL_SIZE | |
668 | ||
22bba805 JB |
669 | #define BCM_RECV_TYPE49 \ |
670 | .type = BCM_TYPE49_PKT, \ | |
671 | .hlen = BCM_TYPE49_SIZE, \ | |
672 | .loff = 0, \ | |
673 | .lsize = 0, \ | |
674 | .maxlen = BCM_TYPE49_SIZE | |
675 | ||
676 | #define BCM_RECV_TYPE52 \ | |
677 | .type = BCM_TYPE52_PKT, \ | |
678 | .hlen = BCM_TYPE52_SIZE, \ | |
679 | .loff = 0, \ | |
680 | .lsize = 0, \ | |
681 | .maxlen = BCM_TYPE52_SIZE | |
682 | ||
79b8df93 | 683 | static const struct h4_recv_pkt bcm_recv_pkts[] = { |
94c58132 MH |
684 | { H4_RECV_ACL, .recv = hci_recv_frame }, |
685 | { H4_RECV_SCO, .recv = hci_recv_frame }, | |
686 | { H4_RECV_EVENT, .recv = hci_recv_frame }, | |
9edd1de7 | 687 | { H4_RECV_ISO, .recv = hci_recv_frame }, |
94c58132 | 688 | { BCM_RECV_LM_DIAG, .recv = hci_recv_diag }, |
01d5e44a | 689 | { BCM_RECV_NULL, .recv = hci_recv_diag }, |
22bba805 JB |
690 | { BCM_RECV_TYPE49, .recv = hci_recv_diag }, |
691 | { BCM_RECV_TYPE52, .recv = hci_recv_diag }, | |
79b8df93 MH |
692 | }; |
693 | ||
bdd8818e MH |
694 | static int bcm_recv(struct hci_uart *hu, const void *data, int count) |
695 | { | |
696 | struct bcm_data *bcm = hu->priv; | |
697 | ||
698 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
699 | return -EUNATCH; | |
700 | ||
79b8df93 MH |
701 | bcm->rx_skb = h4_recv_buf(hu->hdev, bcm->rx_skb, data, count, |
702 | bcm_recv_pkts, ARRAY_SIZE(bcm_recv_pkts)); | |
bdd8818e MH |
703 | if (IS_ERR(bcm->rx_skb)) { |
704 | int err = PTR_ERR(bcm->rx_skb); | |
65ad07c9 | 705 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
37134167 | 706 | bcm->rx_skb = NULL; |
bdd8818e | 707 | return err; |
e88ab30d FD |
708 | } else if (!bcm->rx_skb) { |
709 | /* Delay auto-suspend when receiving completed packet */ | |
710 | mutex_lock(&bcm_device_lock); | |
b09c6152 HG |
711 | if (bcm->dev && bcm_device_exists(bcm->dev)) { |
712 | pm_runtime_get(bcm->dev->dev); | |
713 | pm_runtime_mark_last_busy(bcm->dev->dev); | |
714 | pm_runtime_put_autosuspend(bcm->dev->dev); | |
715 | } | |
e88ab30d | 716 | mutex_unlock(&bcm_device_lock); |
bdd8818e MH |
717 | } |
718 | ||
719 | return count; | |
720 | } | |
721 | ||
722 | static int bcm_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
723 | { | |
724 | struct bcm_data *bcm = hu->priv; | |
725 | ||
65ad07c9 | 726 | bt_dev_dbg(hu->hdev, "hu %p skb %p", hu, skb); |
bdd8818e MH |
727 | |
728 | /* Prepend skb with frame type */ | |
618e8bc2 | 729 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
bdd8818e MH |
730 | skb_queue_tail(&bcm->txq, skb); |
731 | ||
732 | return 0; | |
733 | } | |
734 | ||
735 | static struct sk_buff *bcm_dequeue(struct hci_uart *hu) | |
736 | { | |
737 | struct bcm_data *bcm = hu->priv; | |
e88ab30d FD |
738 | struct sk_buff *skb = NULL; |
739 | struct bcm_device *bdev = NULL; | |
740 | ||
741 | mutex_lock(&bcm_device_lock); | |
742 | ||
743 | if (bcm_device_exists(bcm->dev)) { | |
744 | bdev = bcm->dev; | |
c0d3ce58 | 745 | pm_runtime_get_sync(bdev->dev); |
e88ab30d FD |
746 | /* Shall be resumed here */ |
747 | } | |
748 | ||
749 | skb = skb_dequeue(&bcm->txq); | |
750 | ||
751 | if (bdev) { | |
c0d3ce58 HG |
752 | pm_runtime_mark_last_busy(bdev->dev); |
753 | pm_runtime_put_autosuspend(bdev->dev); | |
e88ab30d | 754 | } |
bdd8818e | 755 | |
e88ab30d FD |
756 | mutex_unlock(&bcm_device_lock); |
757 | ||
758 | return skb; | |
bdd8818e MH |
759 | } |
760 | ||
b7a622a2 FD |
761 | #ifdef CONFIG_PM |
762 | static int bcm_suspend_device(struct device *dev) | |
118612fb | 763 | { |
78277d73 | 764 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 765 | int err; |
118612fb | 766 | |
b7a622a2 | 767 | bt_dev_dbg(bdev, ""); |
917522aa | 768 | |
b7a622a2 | 769 | if (!bdev->is_suspended && bdev->hu) { |
118612fb FD |
770 | hci_uart_set_flow_control(bdev->hu, true); |
771 | ||
b7a622a2 | 772 | /* Once this returns, driver suspends BT via GPIO */ |
118612fb FD |
773 | bdev->is_suspended = true; |
774 | } | |
775 | ||
776 | /* Suspend the device */ | |
8bfa7e1e LW |
777 | err = bdev->set_device_wakeup(bdev, false); |
778 | if (err) { | |
779 | if (bdev->is_suspended && bdev->hu) { | |
780 | bdev->is_suspended = false; | |
781 | hci_uart_set_flow_control(bdev->hu, false); | |
782 | } | |
783 | return -EBUSY; | |
784 | } | |
785 | ||
3e81a4ca | 786 | bt_dev_dbg(bdev, "suspend, delaying 15 ms"); |
e4b9e5b8 | 787 | msleep(15); |
118612fb | 788 | |
b7a622a2 FD |
789 | return 0; |
790 | } | |
791 | ||
792 | static int bcm_resume_device(struct device *dev) | |
793 | { | |
78277d73 | 794 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 795 | int err; |
b7a622a2 FD |
796 | |
797 | bt_dev_dbg(bdev, ""); | |
798 | ||
8bfa7e1e LW |
799 | err = bdev->set_device_wakeup(bdev, true); |
800 | if (err) { | |
801 | dev_err(dev, "Failed to power up\n"); | |
802 | return err; | |
803 | } | |
804 | ||
3e81a4ca | 805 | bt_dev_dbg(bdev, "resume, delaying 15 ms"); |
e4b9e5b8 | 806 | msleep(15); |
b7a622a2 FD |
807 | |
808 | /* When this executes, the device has woken up already */ | |
809 | if (bdev->is_suspended && bdev->hu) { | |
810 | bdev->is_suspended = false; | |
811 | ||
812 | hci_uart_set_flow_control(bdev->hu, false); | |
813 | } | |
814 | ||
815 | return 0; | |
816 | } | |
817 | #endif | |
818 | ||
819 | #ifdef CONFIG_PM_SLEEP | |
8a920568 | 820 | /* suspend callback */ |
b7a622a2 FD |
821 | static int bcm_suspend(struct device *dev) |
822 | { | |
78277d73 | 823 | struct bcm_device *bdev = dev_get_drvdata(dev); |
b7a622a2 FD |
824 | int error; |
825 | ||
826 | bt_dev_dbg(bdev, "suspend: is_suspended %d", bdev->is_suspended); | |
827 | ||
8a920568 HG |
828 | /* |
829 | * When used with a device instantiated as platform_device, bcm_suspend | |
830 | * can be called at any time as long as the platform device is bound, | |
831 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
832 | * and device_wake-up GPIO. |
833 | */ | |
834 | mutex_lock(&bcm_device_lock); | |
835 | ||
836 | if (!bdev->hu) | |
837 | goto unlock; | |
838 | ||
e88ab30d FD |
839 | if (pm_runtime_active(dev)) |
840 | bcm_suspend_device(dev); | |
b7a622a2 | 841 | |
4a59f1fa | 842 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
843 | error = enable_irq_wake(bdev->irq); |
844 | if (!error) | |
845 | bt_dev_dbg(bdev, "BCM irq: enabled"); | |
846 | } | |
847 | ||
917522aa | 848 | unlock: |
bb3ea16a | 849 | mutex_unlock(&bcm_device_lock); |
917522aa | 850 | |
118612fb FD |
851 | return 0; |
852 | } | |
853 | ||
8a920568 | 854 | /* resume callback */ |
118612fb FD |
855 | static int bcm_resume(struct device *dev) |
856 | { | |
78277d73 | 857 | struct bcm_device *bdev = dev_get_drvdata(dev); |
8bfa7e1e | 858 | int err = 0; |
118612fb | 859 | |
65ad07c9 | 860 | bt_dev_dbg(bdev, "resume: is_suspended %d", bdev->is_suspended); |
118612fb | 861 | |
8a920568 HG |
862 | /* |
863 | * When used with a device instantiated as platform_device, bcm_resume | |
864 | * can be called at any time as long as platform device is bound, | |
865 | * so it should use bcm_device_lock to protect access to hci_uart | |
b7a622a2 FD |
866 | * and device_wake-up GPIO. |
867 | */ | |
bb3ea16a | 868 | mutex_lock(&bcm_device_lock); |
917522aa FD |
869 | |
870 | if (!bdev->hu) | |
871 | goto unlock; | |
872 | ||
4a59f1fa | 873 | if (device_may_wakeup(dev) && bdev->irq > 0) { |
6cc4396c FD |
874 | disable_irq_wake(bdev->irq); |
875 | bt_dev_dbg(bdev, "BCM irq: disabled"); | |
876 | } | |
877 | ||
8bfa7e1e | 878 | err = bcm_resume_device(dev); |
118612fb | 879 | |
917522aa | 880 | unlock: |
bb3ea16a | 881 | mutex_unlock(&bcm_device_lock); |
917522aa | 882 | |
8bfa7e1e LW |
883 | if (!err) { |
884 | pm_runtime_disable(dev); | |
885 | pm_runtime_set_active(dev); | |
886 | pm_runtime_enable(dev); | |
887 | } | |
e88ab30d | 888 | |
118612fb FD |
889 | return 0; |
890 | } | |
891 | #endif | |
892 | ||
ff7c8380 | 893 | /* Some firmware reports an IRQ which does not work (wrong pin in fw table?) */ |
9a094602 | 894 | static struct gpiod_lookup_table irq_on_int33fc02_pin17_gpios = { |
27e8527e HG |
895 | .dev_id = "serial0-0", |
896 | .table = { | |
897 | GPIO_LOOKUP("INT33FC:02", 17, "host-wakeup-alt", GPIO_ACTIVE_HIGH), | |
898 | { } | |
899 | }, | |
900 | }; | |
901 | ||
ff7c8380 | 902 | static const struct dmi_system_id bcm_broken_irq_dmi_table[] = { |
09df5a91 HG |
903 | { |
904 | .ident = "Acer Iconia One 7 B1-750", | |
905 | .matches = { | |
906 | DMI_MATCH(DMI_SYS_VENDOR, "Insyde"), | |
907 | DMI_MATCH(DMI_PRODUCT_NAME, "VESPA2"), | |
908 | }, | |
909 | .driver_data = &irq_on_int33fc02_pin17_gpios, | |
910 | }, | |
27e8527e HG |
911 | { |
912 | .ident = "Asus TF103C", | |
913 | .matches = { | |
914 | DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."), | |
915 | DMI_MATCH(DMI_PRODUCT_NAME, "TF103C"), | |
916 | }, | |
9a094602 HG |
917 | .driver_data = &irq_on_int33fc02_pin17_gpios, |
918 | }, | |
919 | { | |
920 | .ident = "Lenovo Yoga Tablet 2 830F/L / 1050F/L", | |
921 | .matches = { | |
922 | DMI_MATCH(DMI_SYS_VENDOR, "Intel Corp."), | |
923 | DMI_MATCH(DMI_PRODUCT_NAME, "VALLEYVIEW C0 PLATFORM"), | |
924 | DMI_MATCH(DMI_BOARD_NAME, "BYT-T FFD8"), | |
925 | /* Partial match on beginning of BIOS version */ | |
926 | DMI_MATCH(DMI_BIOS_VERSION, "BLADE_21"), | |
927 | }, | |
928 | .driver_data = &irq_on_int33fc02_pin17_gpios, | |
27e8527e | 929 | }, |
ff7c8380 Y |
930 | { |
931 | .ident = "Meegopad T08", | |
932 | .matches = { | |
933 | DMI_EXACT_MATCH(DMI_BOARD_VENDOR, | |
934 | "To be filled by OEM."), | |
935 | DMI_EXACT_MATCH(DMI_BOARD_NAME, "T3 MRD"), | |
936 | DMI_EXACT_MATCH(DMI_BOARD_VERSION, "V1.1"), | |
937 | }, | |
938 | }, | |
939 | { } | |
940 | }; | |
941 | ||
942 | #ifdef CONFIG_ACPI | |
9644e6b9 HG |
943 | static const struct acpi_gpio_params first_gpio = { 0, 0, false }; |
944 | static const struct acpi_gpio_params second_gpio = { 1, 0, false }; | |
945 | static const struct acpi_gpio_params third_gpio = { 2, 0, false }; | |
89ab37b4 DD |
946 | |
947 | static const struct acpi_gpio_mapping acpi_bcm_int_last_gpios[] = { | |
9644e6b9 HG |
948 | { "device-wakeup-gpios", &first_gpio, 1 }, |
949 | { "shutdown-gpios", &second_gpio, 1 }, | |
950 | { "host-wakeup-gpios", &third_gpio, 1 }, | |
89ab37b4 DD |
951 | { }, |
952 | }; | |
953 | ||
89ab37b4 | 954 | static const struct acpi_gpio_mapping acpi_bcm_int_first_gpios[] = { |
9644e6b9 HG |
955 | { "host-wakeup-gpios", &first_gpio, 1 }, |
956 | { "device-wakeup-gpios", &second_gpio, 1 }, | |
957 | { "shutdown-gpios", &third_gpio, 1 }, | |
0395ffc1 FD |
958 | { }, |
959 | }; | |
960 | ||
ae056908 FD |
961 | static int bcm_resource(struct acpi_resource *ares, void *data) |
962 | { | |
963 | struct bcm_device *dev = data; | |
6cc4396c FD |
964 | struct acpi_resource_extended_irq *irq; |
965 | struct acpi_resource_gpio *gpio; | |
966 | struct acpi_resource_uart_serialbus *sb; | |
967 | ||
968 | switch (ares->type) { | |
969 | case ACPI_RESOURCE_TYPE_EXTENDED_IRQ: | |
970 | irq = &ares->data.extended_irq; | |
bb5208b3 HG |
971 | if (irq->polarity != ACPI_ACTIVE_LOW) |
972 | dev_info(dev->dev, "ACPI Interrupt resource is active-high, this is usually wrong, treating the IRQ as active-low\n"); | |
973 | dev->irq_active_low = true; | |
6cc4396c FD |
974 | break; |
975 | ||
976 | case ACPI_RESOURCE_TYPE_GPIO: | |
977 | gpio = &ares->data.gpio; | |
a4de1567 HG |
978 | if (gpio->connection_type == ACPI_RESOURCE_GPIO_TYPE_INT) { |
979 | dev->gpio_int_idx = dev->gpio_count; | |
227630cc | 980 | dev->irq_active_low = gpio->polarity == ACPI_ACTIVE_LOW; |
a4de1567 HG |
981 | } |
982 | dev->gpio_count++; | |
6cc4396c FD |
983 | break; |
984 | ||
985 | case ACPI_RESOURCE_TYPE_SERIAL_BUS: | |
ae056908 | 986 | sb = &ares->data.uart_serial_bus; |
74183a1c | 987 | if (sb->type == ACPI_RESOURCE_SERIAL_TYPE_UART) { |
ae056908 | 988 | dev->init_speed = sb->default_baud_rate; |
74183a1c MH |
989 | dev->oper_speed = 4000000; |
990 | } | |
6cc4396c FD |
991 | break; |
992 | ||
993 | default: | |
994 | break; | |
ae056908 FD |
995 | } |
996 | ||
9d54fd6a | 997 | return 0; |
ae056908 | 998 | } |
4c33162c LW |
999 | |
1000 | static int bcm_apple_set_device_wakeup(struct bcm_device *dev, bool awake) | |
1001 | { | |
1002 | if (ACPI_FAILURE(acpi_execute_simple_method(dev->btlp, NULL, !awake))) | |
1003 | return -EIO; | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | static int bcm_apple_set_shutdown(struct bcm_device *dev, bool powered) | |
1009 | { | |
1010 | if (ACPI_FAILURE(acpi_evaluate_object(powered ? dev->btpu : dev->btpd, | |
1011 | NULL, NULL, NULL))) | |
1012 | return -EIO; | |
1013 | ||
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | static int bcm_apple_get_resources(struct bcm_device *dev) | |
1018 | { | |
1019 | struct acpi_device *adev = ACPI_COMPANION(dev->dev); | |
1020 | const union acpi_object *obj; | |
1021 | ||
1022 | if (!adev || | |
1023 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTLP", &dev->btlp)) || | |
1024 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPU", &dev->btpu)) || | |
1025 | ACPI_FAILURE(acpi_get_handle(adev->handle, "BTPD", &dev->btpd))) | |
1026 | return -ENODEV; | |
1027 | ||
1028 | if (!acpi_dev_get_property(adev, "baud", ACPI_TYPE_BUFFER, &obj) && | |
1029 | obj->buffer.length == 8) | |
1030 | dev->init_speed = *(u64 *)obj->buffer.pointer; | |
1031 | ||
1032 | dev->set_device_wakeup = bcm_apple_set_device_wakeup; | |
1033 | dev->set_shutdown = bcm_apple_set_shutdown; | |
1034 | ||
1035 | return 0; | |
1036 | } | |
1037 | #else | |
1038 | static inline int bcm_apple_get_resources(struct bcm_device *dev) | |
1039 | { | |
1040 | return -EOPNOTSUPP; | |
1041 | } | |
212d7183 | 1042 | #endif /* CONFIG_ACPI */ |
ae056908 | 1043 | |
8353b4a6 LW |
1044 | static int bcm_gpio_set_device_wakeup(struct bcm_device *dev, bool awake) |
1045 | { | |
fb2d466b | 1046 | gpiod_set_value_cansleep(dev->device_wakeup, awake); |
8353b4a6 LW |
1047 | return 0; |
1048 | } | |
1049 | ||
1050 | static int bcm_gpio_set_shutdown(struct bcm_device *dev, bool powered) | |
1051 | { | |
fb2d466b | 1052 | gpiod_set_value_cansleep(dev->shutdown, powered); |
2f407966 LW |
1053 | if (dev->reset) |
1054 | /* | |
1055 | * The reset line is asserted on powerdown and deasserted | |
1056 | * on poweron so the inverse of powered is used. Notice | |
1057 | * that the GPIO line BT_RST_N needs to be specified as | |
1058 | * active low in the device tree or similar system | |
1059 | * description. | |
1060 | */ | |
1061 | gpiod_set_value_cansleep(dev->reset, !powered); | |
8353b4a6 LW |
1062 | return 0; |
1063 | } | |
1064 | ||
55dbfcd0 CYT |
1065 | /* Try a bunch of names for TXCO */ |
1066 | static struct clk *bcm_get_txco(struct device *dev) | |
1067 | { | |
1068 | struct clk *clk; | |
1069 | ||
1070 | /* New explicit name */ | |
1071 | clk = devm_clk_get(dev, "txco"); | |
1072 | if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER) | |
1073 | return clk; | |
1074 | ||
1075 | /* Deprecated name */ | |
1076 | clk = devm_clk_get(dev, "extclk"); | |
1077 | if (!IS_ERR(clk) || PTR_ERR(clk) == -EPROBE_DEFER) | |
1078 | return clk; | |
1079 | ||
1080 | /* Original code used no name at all */ | |
1081 | return devm_clk_get(dev, NULL); | |
1082 | } | |
1083 | ||
42ef18f0 | 1084 | static int bcm_get_resources(struct bcm_device *dev) |
0395ffc1 | 1085 | { |
27e8527e HG |
1086 | const struct dmi_system_id *broken_irq_dmi_id; |
1087 | const char *irq_con_id = "host-wakeup"; | |
75d11676 | 1088 | int err; |
2b05393b | 1089 | |
c0d3ce58 | 1090 | dev->name = dev_name(dev->dev); |
0395ffc1 | 1091 | |
4c33162c LW |
1092 | if (x86_apple_machine && !bcm_apple_get_resources(dev)) |
1093 | return 0; | |
1094 | ||
55dbfcd0 | 1095 | dev->txco_clk = bcm_get_txco(dev->dev); |
89ab37b4 | 1096 | |
28ac03b9 | 1097 | /* Handle deferred probing */ |
55dbfcd0 CYT |
1098 | if (dev->txco_clk == ERR_PTR(-EPROBE_DEFER)) |
1099 | return PTR_ERR(dev->txco_clk); | |
28ac03b9 | 1100 | |
8c08947b | 1101 | /* Ignore all other errors as before */ |
55dbfcd0 CYT |
1102 | if (IS_ERR(dev->txco_clk)) |
1103 | dev->txco_clk = NULL; | |
8c08947b | 1104 | |
90bc07cc CYT |
1105 | dev->lpo_clk = devm_clk_get(dev->dev, "lpo"); |
1106 | if (dev->lpo_clk == ERR_PTR(-EPROBE_DEFER)) | |
1107 | return PTR_ERR(dev->lpo_clk); | |
1108 | ||
1109 | if (IS_ERR(dev->lpo_clk)) | |
1110 | dev->lpo_clk = NULL; | |
1111 | ||
1112 | /* Check if we accidentally fetched the lpo clock twice */ | |
1113 | if (dev->lpo_clk && clk_is_match(dev->lpo_clk, dev->txco_clk)) { | |
1114 | devm_clk_put(dev->dev, dev->txco_clk); | |
1115 | dev->txco_clk = NULL; | |
1116 | } | |
1117 | ||
ab2f336c SW |
1118 | dev->device_wakeup = devm_gpiod_get_optional(dev->dev, "device-wakeup", |
1119 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
1120 | if (IS_ERR(dev->device_wakeup)) |
1121 | return PTR_ERR(dev->device_wakeup); | |
0395ffc1 | 1122 | |
ab2f336c SW |
1123 | dev->shutdown = devm_gpiod_get_optional(dev->dev, "shutdown", |
1124 | GPIOD_OUT_LOW); | |
62aaefa7 UKK |
1125 | if (IS_ERR(dev->shutdown)) |
1126 | return PTR_ERR(dev->shutdown); | |
0395ffc1 | 1127 | |
2f407966 LW |
1128 | dev->reset = devm_gpiod_get_optional(dev->dev, "reset", |
1129 | GPIOD_OUT_LOW); | |
1130 | if (IS_ERR(dev->reset)) | |
1131 | return PTR_ERR(dev->reset); | |
1132 | ||
8353b4a6 LW |
1133 | dev->set_device_wakeup = bcm_gpio_set_device_wakeup; |
1134 | dev->set_shutdown = bcm_gpio_set_shutdown; | |
1135 | ||
75d11676 CYT |
1136 | dev->supplies[0].supply = "vbat"; |
1137 | dev->supplies[1].supply = "vddio"; | |
1138 | err = devm_regulator_bulk_get(dev->dev, BCM_NUM_SUPPLIES, | |
1139 | dev->supplies); | |
1140 | if (err) | |
1141 | return err; | |
1142 | ||
27e8527e HG |
1143 | broken_irq_dmi_id = dmi_first_match(bcm_broken_irq_dmi_table); |
1144 | if (broken_irq_dmi_id && broken_irq_dmi_id->driver_data) { | |
1145 | gpiod_add_lookup_table(broken_irq_dmi_id->driver_data); | |
1146 | irq_con_id = "host-wakeup-alt"; | |
1147 | dev->irq_active_low = false; | |
1148 | dev->irq = 0; | |
1149 | } | |
1150 | ||
6cc4396c | 1151 | /* IRQ can be declared in ACPI table as Interrupt or GpioInt */ |
6cc4396c FD |
1152 | if (dev->irq <= 0) { |
1153 | struct gpio_desc *gpio; | |
1154 | ||
27e8527e | 1155 | gpio = devm_gpiod_get_optional(dev->dev, irq_con_id, GPIOD_IN); |
6cc4396c FD |
1156 | if (IS_ERR(gpio)) |
1157 | return PTR_ERR(gpio); | |
1158 | ||
1159 | dev->irq = gpiod_to_irq(gpio); | |
1160 | } | |
1161 | ||
27e8527e HG |
1162 | if (broken_irq_dmi_id) { |
1163 | if (broken_irq_dmi_id->driver_data) { | |
1164 | gpiod_remove_lookup_table(broken_irq_dmi_id->driver_data); | |
1165 | } else { | |
1166 | dev_info(dev->dev, "%s: Has a broken IRQ config, disabling IRQ support / runtime-pm\n", | |
1167 | broken_irq_dmi_id->ident); | |
1168 | dev->irq = 0; | |
1169 | } | |
2b05393b HG |
1170 | } |
1171 | ||
5954cdf1 | 1172 | dev_dbg(dev->dev, "BCM irq: %d\n", dev->irq); |
212d7183 AS |
1173 | return 0; |
1174 | } | |
1175 | ||
1176 | #ifdef CONFIG_ACPI | |
1177 | static int bcm_acpi_probe(struct bcm_device *dev) | |
1178 | { | |
212d7183 | 1179 | LIST_HEAD(resources); |
212d7183 | 1180 | const struct acpi_gpio_mapping *gpio_mapping = acpi_bcm_int_last_gpios; |
9d54fd6a | 1181 | struct resource_entry *entry; |
212d7183 AS |
1182 | int ret; |
1183 | ||
ae056908 | 1184 | /* Retrieve UART ACPI info */ |
a4de1567 | 1185 | dev->gpio_int_idx = -1; |
c0d3ce58 | 1186 | ret = acpi_dev_get_resources(ACPI_COMPANION(dev->dev), |
e98d6d62 | 1187 | &resources, bcm_resource, dev); |
5be00284 JN |
1188 | if (ret < 0) |
1189 | return ret; | |
9d54fd6a HG |
1190 | |
1191 | resource_list_for_each_entry(entry, &resources) { | |
1192 | if (resource_type(entry->res) == IORESOURCE_IRQ) { | |
1193 | dev->irq = entry->res->start; | |
1194 | break; | |
1195 | } | |
1196 | } | |
09dbf1b7 | 1197 | acpi_dev_free_resource_list(&resources); |
ae056908 | 1198 | |
a4de1567 HG |
1199 | /* If the DSDT uses an Interrupt resource for the IRQ, then there are |
1200 | * only 2 GPIO resources, we use the irq-last mapping for this, since | |
1201 | * we already have an irq the 3th / last mapping will not be used. | |
1202 | */ | |
1203 | if (dev->irq) | |
1204 | gpio_mapping = acpi_bcm_int_last_gpios; | |
1205 | else if (dev->gpio_int_idx == 0) | |
1206 | gpio_mapping = acpi_bcm_int_first_gpios; | |
1207 | else if (dev->gpio_int_idx == 2) | |
1208 | gpio_mapping = acpi_bcm_int_last_gpios; | |
1209 | else | |
1210 | dev_warn(dev->dev, "Unexpected ACPI gpio_int_idx: %d\n", | |
1211 | dev->gpio_int_idx); | |
1212 | ||
1213 | /* Warn if our expectations are not met. */ | |
1214 | if (dev->gpio_count != (dev->irq ? 2 : 3)) | |
1215 | dev_warn(dev->dev, "Unexpected number of ACPI GPIOs: %d\n", | |
1216 | dev->gpio_count); | |
1217 | ||
1218 | ret = devm_acpi_dev_add_driver_gpios(dev->dev, gpio_mapping); | |
1219 | if (ret) | |
1220 | return ret; | |
1221 | ||
e09070c5 HG |
1222 | if (irq_polarity != -1) { |
1223 | dev->irq_active_low = irq_polarity; | |
1224 | dev_warn(dev->dev, "Overwriting IRQ polarity to active %s by module-param\n", | |
1225 | dev->irq_active_low ? "low" : "high"); | |
5cebdfea FD |
1226 | } |
1227 | ||
0395ffc1 FD |
1228 | return 0; |
1229 | } | |
50d78bcf FD |
1230 | #else |
1231 | static int bcm_acpi_probe(struct bcm_device *dev) | |
1232 | { | |
1233 | return -EINVAL; | |
1234 | } | |
1235 | #endif /* CONFIG_ACPI */ | |
0395ffc1 | 1236 | |
8a920568 HG |
1237 | static int bcm_of_probe(struct bcm_device *bdev) |
1238 | { | |
af35e28f HJ |
1239 | bdev->use_autobaud_mode = device_property_read_bool(bdev->dev, |
1240 | "brcm,requires-autobaud-mode"); | |
8a920568 | 1241 | device_property_read_u32(bdev->dev, "max-speed", &bdev->oper_speed); |
eb762b94 APS |
1242 | device_property_read_u8_array(bdev->dev, "brcm,bt-pcm-int-params", |
1243 | bdev->pcm_int_params, 5); | |
f25a96c8 | 1244 | bdev->irq = of_irq_get_byname(bdev->dev->of_node, "host-wakeup"); |
b25e4df4 MM |
1245 | bdev->irq_active_low = irq_get_trigger_type(bdev->irq) |
1246 | & (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_LEVEL_LOW); | |
8a920568 HG |
1247 | return 0; |
1248 | } | |
1249 | ||
0395ffc1 FD |
1250 | static int bcm_probe(struct platform_device *pdev) |
1251 | { | |
1252 | struct bcm_device *dev; | |
0395ffc1 FD |
1253 | int ret; |
1254 | ||
1255 | dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL); | |
1256 | if (!dev) | |
1257 | return -ENOMEM; | |
1258 | ||
c0d3ce58 | 1259 | dev->dev = &pdev->dev; |
b38cd3b4 JJ |
1260 | |
1261 | ret = platform_get_irq(pdev, 0); | |
1262 | if (ret < 0) | |
1263 | return ret; | |
1264 | ||
1265 | dev->irq = ret; | |
0395ffc1 | 1266 | |
eb762b94 APS |
1267 | /* Initialize routing field to an unused value */ |
1268 | dev->pcm_int_params[0] = 0xff; | |
1269 | ||
201762e2 | 1270 | if (has_acpi_companion(&pdev->dev)) { |
212d7183 | 1271 | ret = bcm_acpi_probe(dev); |
201762e2 HG |
1272 | if (ret) |
1273 | return ret; | |
1274 | } | |
1275 | ||
42ef18f0 | 1276 | ret = bcm_get_resources(dev); |
4d1c4558 JN |
1277 | if (ret) |
1278 | return ret; | |
0395ffc1 FD |
1279 | |
1280 | platform_set_drvdata(pdev, dev); | |
1281 | ||
1282 | dev_info(&pdev->dev, "%s device registered.\n", dev->name); | |
1283 | ||
1284 | /* Place this instance on the device list */ | |
bb3ea16a | 1285 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1286 | list_add_tail(&dev->list, &bcm_device_list); |
bb3ea16a | 1287 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1288 | |
8bfa7e1e LW |
1289 | ret = bcm_gpio_set_power(dev, false); |
1290 | if (ret) | |
1291 | dev_err(&pdev->dev, "Failed to power down\n"); | |
0395ffc1 FD |
1292 | |
1293 | return 0; | |
1294 | } | |
1295 | ||
1296 | static int bcm_remove(struct platform_device *pdev) | |
1297 | { | |
1298 | struct bcm_device *dev = platform_get_drvdata(pdev); | |
1299 | ||
bb3ea16a | 1300 | mutex_lock(&bcm_device_lock); |
0395ffc1 | 1301 | list_del(&dev->list); |
bb3ea16a | 1302 | mutex_unlock(&bcm_device_lock); |
0395ffc1 | 1303 | |
0395ffc1 FD |
1304 | dev_info(&pdev->dev, "%s device unregistered.\n", dev->name); |
1305 | ||
1306 | return 0; | |
1307 | } | |
1308 | ||
bdd8818e MH |
1309 | static const struct hci_uart_proto bcm_proto = { |
1310 | .id = HCI_UART_BCM, | |
143f0a28 | 1311 | .name = "Broadcom", |
aee61f7a | 1312 | .manufacturer = 15, |
61b2fc2b | 1313 | .init_speed = 115200, |
bdd8818e MH |
1314 | .open = bcm_open, |
1315 | .close = bcm_close, | |
1316 | .flush = bcm_flush, | |
1317 | .setup = bcm_setup, | |
61b2fc2b | 1318 | .set_baudrate = bcm_set_baudrate, |
bdd8818e MH |
1319 | .recv = bcm_recv, |
1320 | .enqueue = bcm_enqueue, | |
1321 | .dequeue = bcm_dequeue, | |
1322 | }; | |
1323 | ||
0395ffc1 | 1324 | #ifdef CONFIG_ACPI |
ce439473 HG |
1325 | |
1326 | /* bcm43430a0/a1 BT does not support 48MHz UART clock, limit to 2000000 baud */ | |
1327 | static struct bcm_device_data bcm43430_device_data = { | |
1328 | .max_speed = 2000000, | |
1329 | }; | |
1330 | ||
0395ffc1 | 1331 | static const struct acpi_device_id bcm_acpi_match[] = { |
61121502 HG |
1332 | { "BCM2E00" }, |
1333 | { "BCM2E01" }, | |
1334 | { "BCM2E02" }, | |
1335 | { "BCM2E03" }, | |
1336 | { "BCM2E04" }, | |
1337 | { "BCM2E05" }, | |
1338 | { "BCM2E06" }, | |
1339 | { "BCM2E07" }, | |
1340 | { "BCM2E08" }, | |
1341 | { "BCM2E09" }, | |
1342 | { "BCM2E0A" }, | |
1343 | { "BCM2E0B" }, | |
1344 | { "BCM2E0C" }, | |
1345 | { "BCM2E0D" }, | |
1346 | { "BCM2E0E" }, | |
1347 | { "BCM2E0F" }, | |
1348 | { "BCM2E10" }, | |
1349 | { "BCM2E11" }, | |
1350 | { "BCM2E12" }, | |
1351 | { "BCM2E13" }, | |
1352 | { "BCM2E14" }, | |
1353 | { "BCM2E15" }, | |
1354 | { "BCM2E16" }, | |
1355 | { "BCM2E17" }, | |
1356 | { "BCM2E18" }, | |
1357 | { "BCM2E19" }, | |
a4de1567 | 1358 | { "BCM2E1A" }, |
61121502 HG |
1359 | { "BCM2E1B" }, |
1360 | { "BCM2E1C" }, | |
1361 | { "BCM2E1D" }, | |
1362 | { "BCM2E1F" }, | |
1363 | { "BCM2E20" }, | |
1364 | { "BCM2E21" }, | |
1365 | { "BCM2E22" }, | |
1366 | { "BCM2E23" }, | |
1367 | { "BCM2E24" }, | |
1368 | { "BCM2E25" }, | |
1369 | { "BCM2E26" }, | |
1370 | { "BCM2E27" }, | |
1371 | { "BCM2E28" }, | |
1372 | { "BCM2E29" }, | |
1373 | { "BCM2E2A" }, | |
1374 | { "BCM2E2B" }, | |
1375 | { "BCM2E2C" }, | |
1376 | { "BCM2E2D" }, | |
1377 | { "BCM2E2E" }, | |
1378 | { "BCM2E2F" }, | |
1379 | { "BCM2E30" }, | |
1380 | { "BCM2E31" }, | |
1381 | { "BCM2E32" }, | |
1382 | { "BCM2E33" }, | |
1383 | { "BCM2E34" }, | |
1384 | { "BCM2E35" }, | |
1385 | { "BCM2E36" }, | |
1386 | { "BCM2E37" }, | |
a4de1567 HG |
1387 | { "BCM2E38" }, |
1388 | { "BCM2E39" }, | |
1389 | { "BCM2E3A" }, | |
61121502 HG |
1390 | { "BCM2E3B" }, |
1391 | { "BCM2E3C" }, | |
a4de1567 | 1392 | { "BCM2E3D" }, |
61121502 | 1393 | { "BCM2E3E" }, |
a4de1567 HG |
1394 | { "BCM2E3F" }, |
1395 | { "BCM2E40" }, | |
61121502 HG |
1396 | { "BCM2E41" }, |
1397 | { "BCM2E42" }, | |
1398 | { "BCM2E43" }, | |
1399 | { "BCM2E44" }, | |
1400 | { "BCM2E45" }, | |
1401 | { "BCM2E46" }, | |
1402 | { "BCM2E47" }, | |
1403 | { "BCM2E48" }, | |
1404 | { "BCM2E49" }, | |
1405 | { "BCM2E4A" }, | |
1406 | { "BCM2E4B" }, | |
1407 | { "BCM2E4C" }, | |
1408 | { "BCM2E4D" }, | |
1409 | { "BCM2E4E" }, | |
1410 | { "BCM2E4F" }, | |
1411 | { "BCM2E50" }, | |
1412 | { "BCM2E51" }, | |
1413 | { "BCM2E52" }, | |
1414 | { "BCM2E53" }, | |
a4de1567 HG |
1415 | { "BCM2E54" }, |
1416 | { "BCM2E55" }, | |
61121502 HG |
1417 | { "BCM2E56" }, |
1418 | { "BCM2E57" }, | |
1419 | { "BCM2E58" }, | |
1420 | { "BCM2E59" }, | |
1421 | { "BCM2E5A" }, | |
1422 | { "BCM2E5B" }, | |
1423 | { "BCM2E5C" }, | |
1424 | { "BCM2E5D" }, | |
1425 | { "BCM2E5E" }, | |
1426 | { "BCM2E5F" }, | |
1427 | { "BCM2E60" }, | |
1428 | { "BCM2E61" }, | |
1429 | { "BCM2E62" }, | |
1430 | { "BCM2E63" }, | |
a4de1567 HG |
1431 | { "BCM2E64" }, |
1432 | { "BCM2E65" }, | |
61121502 | 1433 | { "BCM2E66" }, |
a4de1567 | 1434 | { "BCM2E67" }, |
61121502 HG |
1435 | { "BCM2E68" }, |
1436 | { "BCM2E69" }, | |
1437 | { "BCM2E6B" }, | |
1438 | { "BCM2E6D" }, | |
1439 | { "BCM2E6E" }, | |
1440 | { "BCM2E6F" }, | |
1441 | { "BCM2E70" }, | |
a4de1567 HG |
1442 | { "BCM2E71" }, |
1443 | { "BCM2E72" }, | |
61121502 | 1444 | { "BCM2E73" }, |
ce439473 HG |
1445 | { "BCM2E74", (long)&bcm43430_device_data }, |
1446 | { "BCM2E75", (long)&bcm43430_device_data }, | |
61121502 HG |
1447 | { "BCM2E76" }, |
1448 | { "BCM2E77" }, | |
1449 | { "BCM2E78" }, | |
1450 | { "BCM2E79" }, | |
1451 | { "BCM2E7A" }, | |
ce439473 | 1452 | { "BCM2E7B", (long)&bcm43430_device_data }, |
a4de1567 | 1453 | { "BCM2E7C" }, |
61121502 | 1454 | { "BCM2E7D" }, |
a4de1567 | 1455 | { "BCM2E7E" }, |
61121502 | 1456 | { "BCM2E7F" }, |
ce439473 | 1457 | { "BCM2E80", (long)&bcm43430_device_data }, |
61121502 HG |
1458 | { "BCM2E81" }, |
1459 | { "BCM2E82" }, | |
a4de1567 HG |
1460 | { "BCM2E83" }, |
1461 | { "BCM2E84" }, | |
61121502 HG |
1462 | { "BCM2E85" }, |
1463 | { "BCM2E86" }, | |
1464 | { "BCM2E87" }, | |
1465 | { "BCM2E88" }, | |
ce439473 | 1466 | { "BCM2E89", (long)&bcm43430_device_data }, |
61121502 HG |
1467 | { "BCM2E8A" }, |
1468 | { "BCM2E8B" }, | |
1469 | { "BCM2E8C" }, | |
1470 | { "BCM2E8D" }, | |
1471 | { "BCM2E8E" }, | |
a4de1567 | 1472 | { "BCM2E90" }, |
61121502 HG |
1473 | { "BCM2E92" }, |
1474 | { "BCM2E93" }, | |
ce439473 | 1475 | { "BCM2E94", (long)&bcm43430_device_data }, |
a4de1567 HG |
1476 | { "BCM2E95" }, |
1477 | { "BCM2E96" }, | |
61121502 HG |
1478 | { "BCM2E97" }, |
1479 | { "BCM2E98" }, | |
ce439473 | 1480 | { "BCM2E99", (long)&bcm43430_device_data }, |
61121502 | 1481 | { "BCM2E9A" }, |
ce439473 | 1482 | { "BCM2E9B", (long)&bcm43430_device_data }, |
61121502 HG |
1483 | { "BCM2E9C" }, |
1484 | { "BCM2E9D" }, | |
ce439473 | 1485 | { "BCM2E9F", (long)&bcm43430_device_data }, |
61121502 HG |
1486 | { "BCM2EA0" }, |
1487 | { "BCM2EA1" }, | |
ce439473 HG |
1488 | { "BCM2EA2", (long)&bcm43430_device_data }, |
1489 | { "BCM2EA3", (long)&bcm43430_device_data }, | |
a4de1567 | 1490 | { "BCM2EA4" }, |
61121502 HG |
1491 | { "BCM2EA5" }, |
1492 | { "BCM2EA6" }, | |
1493 | { "BCM2EA7" }, | |
1494 | { "BCM2EA8" }, | |
1495 | { "BCM2EA9" }, | |
ce439473 HG |
1496 | { "BCM2EAA", (long)&bcm43430_device_data }, |
1497 | { "BCM2EAB", (long)&bcm43430_device_data }, | |
1498 | { "BCM2EAC", (long)&bcm43430_device_data }, | |
0395ffc1 FD |
1499 | { }, |
1500 | }; | |
1501 | MODULE_DEVICE_TABLE(acpi, bcm_acpi_match); | |
1502 | #endif | |
1503 | ||
8a920568 | 1504 | /* suspend and resume callbacks */ |
e88ab30d FD |
1505 | static const struct dev_pm_ops bcm_pm_ops = { |
1506 | SET_SYSTEM_SLEEP_PM_OPS(bcm_suspend, bcm_resume) | |
1507 | SET_RUNTIME_PM_OPS(bcm_suspend_device, bcm_resume_device, NULL) | |
1508 | }; | |
118612fb | 1509 | |
0395ffc1 FD |
1510 | static struct platform_driver bcm_driver = { |
1511 | .probe = bcm_probe, | |
1512 | .remove = bcm_remove, | |
1513 | .driver = { | |
1514 | .name = "hci_bcm", | |
1515 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), | |
118612fb | 1516 | .pm = &bcm_pm_ops, |
0395ffc1 FD |
1517 | }, |
1518 | }; | |
1519 | ||
33cd149e LP |
1520 | static int bcm_serdev_probe(struct serdev_device *serdev) |
1521 | { | |
8a920568 | 1522 | struct bcm_device *bcmdev; |
5d6f3910 | 1523 | const struct bcm_device_data *data; |
33cd149e LP |
1524 | int err; |
1525 | ||
1526 | bcmdev = devm_kzalloc(&serdev->dev, sizeof(*bcmdev), GFP_KERNEL); | |
1527 | if (!bcmdev) | |
1528 | return -ENOMEM; | |
1529 | ||
8a920568 | 1530 | bcmdev->dev = &serdev->dev; |
81a19053 | 1531 | #ifdef CONFIG_PM |
8a920568 | 1532 | bcmdev->hu = &bcmdev->serdev_hu; |
81a19053 | 1533 | #endif |
8a920568 | 1534 | bcmdev->serdev_hu.serdev = serdev; |
33cd149e LP |
1535 | serdev_device_set_drvdata(serdev, bcmdev); |
1536 | ||
eb762b94 APS |
1537 | /* Initialize routing field to an unused value */ |
1538 | bcmdev->pcm_int_params[0] = 0xff; | |
1539 | ||
8a920568 HG |
1540 | if (has_acpi_companion(&serdev->dev)) |
1541 | err = bcm_acpi_probe(bcmdev); | |
1542 | else | |
1543 | err = bcm_of_probe(bcmdev); | |
1544 | if (err) | |
1545 | return err; | |
33cd149e | 1546 | |
8a920568 HG |
1547 | err = bcm_get_resources(bcmdev); |
1548 | if (err) | |
1549 | return err; | |
1550 | ||
f3863f1d MH |
1551 | if (!bcmdev->shutdown) { |
1552 | dev_warn(&serdev->dev, | |
1553 | "No reset resource, using default baud rate\n"); | |
1554 | bcmdev->oper_speed = bcmdev->init_speed; | |
1555 | } | |
1556 | ||
8bfa7e1e LW |
1557 | err = bcm_gpio_set_power(bcmdev, false); |
1558 | if (err) | |
1559 | dev_err(&serdev->dev, "Failed to power down\n"); | |
8a920568 | 1560 | |
5d6f3910 | 1561 | data = device_get_match_data(bcmdev->dev); |
e601daed | 1562 | if (data) { |
46459cb6 | 1563 | bcmdev->max_autobaud_speed = data->max_autobaud_speed; |
5d6f3910 | 1564 | bcmdev->no_early_set_baudrate = data->no_early_set_baudrate; |
e601daed | 1565 | bcmdev->drive_rts_on_open = data->drive_rts_on_open; |
02d056a3 | 1566 | bcmdev->no_uart_clock_set = data->no_uart_clock_set; |
ce439473 HG |
1567 | if (data->max_speed && bcmdev->oper_speed > data->max_speed) |
1568 | bcmdev->oper_speed = data->max_speed; | |
e601daed | 1569 | } |
5d6f3910 | 1570 | |
8a920568 | 1571 | return hci_uart_register_device(&bcmdev->serdev_hu, &bcm_proto); |
33cd149e LP |
1572 | } |
1573 | ||
1574 | static void bcm_serdev_remove(struct serdev_device *serdev) | |
1575 | { | |
8a920568 | 1576 | struct bcm_device *bcmdev = serdev_device_get_drvdata(serdev); |
33cd149e | 1577 | |
8a920568 | 1578 | hci_uart_unregister_device(&bcmdev->serdev_hu); |
33cd149e LP |
1579 | } |
1580 | ||
1581 | #ifdef CONFIG_OF | |
5d6f3910 APS |
1582 | static struct bcm_device_data bcm4354_device_data = { |
1583 | .no_early_set_baudrate = true, | |
1584 | }; | |
1585 | ||
e601daed SW |
1586 | static struct bcm_device_data bcm43438_device_data = { |
1587 | .drive_rts_on_open = true, | |
1588 | }; | |
1589 | ||
02d056a3 MV |
1590 | static struct bcm_device_data cyw4373a0_device_data = { |
1591 | .no_uart_clock_set = true, | |
1592 | }; | |
1593 | ||
46459cb6 HJ |
1594 | static struct bcm_device_data cyw55572_device_data = { |
1595 | .max_autobaud_speed = 921600, | |
1596 | }; | |
1597 | ||
33cd149e | 1598 | static const struct of_device_id bcm_bluetooth_of_match[] = { |
92ffe0db | 1599 | { .compatible = "brcm,bcm20702a1" }, |
88d1cc96 | 1600 | { .compatible = "brcm,bcm4329-bt" }, |
81534d48 LW |
1601 | { .compatible = "brcm,bcm4330-bt" }, |
1602 | { .compatible = "brcm,bcm4334-bt" }, | |
52c8c7a7 | 1603 | { .compatible = "brcm,bcm4345c5" }, |
01da346c LW |
1604 | { .compatible = "brcm,bcm43430a0-bt" }, |
1605 | { .compatible = "brcm,bcm43430a1-bt" }, | |
e601daed | 1606 | { .compatible = "brcm,bcm43438-bt", .data = &bcm43438_device_data }, |
4f17c2b6 | 1607 | { .compatible = "brcm,bcm4349-bt", .data = &bcm43438_device_data }, |
5d6f3910 | 1608 | { .compatible = "brcm,bcm43540-bt", .data = &bcm4354_device_data }, |
1199ab4c | 1609 | { .compatible = "brcm,bcm4335a0" }, |
02d056a3 | 1610 | { .compatible = "cypress,cyw4373a0-bt", .data = &cyw4373a0_device_data }, |
46459cb6 | 1611 | { .compatible = "infineon,cyw55572-bt", .data = &cyw55572_device_data }, |
33cd149e LP |
1612 | { }, |
1613 | }; | |
1614 | MODULE_DEVICE_TABLE(of, bcm_bluetooth_of_match); | |
1615 | #endif | |
1616 | ||
1617 | static struct serdev_device_driver bcm_serdev_driver = { | |
1618 | .probe = bcm_serdev_probe, | |
1619 | .remove = bcm_serdev_remove, | |
1620 | .driver = { | |
1621 | .name = "hci_uart_bcm", | |
1622 | .of_match_table = of_match_ptr(bcm_bluetooth_of_match), | |
8a920568 HG |
1623 | .acpi_match_table = ACPI_PTR(bcm_acpi_match), |
1624 | .pm = &bcm_pm_ops, | |
33cd149e LP |
1625 | }, |
1626 | }; | |
1627 | ||
bdd8818e MH |
1628 | int __init bcm_init(void) |
1629 | { | |
33cd149e LP |
1630 | /* For now, we need to keep both platform device |
1631 | * driver (ACPI generated) and serdev driver (DT). | |
1632 | */ | |
0395ffc1 | 1633 | platform_driver_register(&bcm_driver); |
33cd149e | 1634 | serdev_device_driver_register(&bcm_serdev_driver); |
0395ffc1 | 1635 | |
bdd8818e MH |
1636 | return hci_uart_register_proto(&bcm_proto); |
1637 | } | |
1638 | ||
1639 | int __exit bcm_deinit(void) | |
1640 | { | |
0395ffc1 | 1641 | platform_driver_unregister(&bcm_driver); |
33cd149e | 1642 | serdev_device_driver_unregister(&bcm_serdev_driver); |
0395ffc1 | 1643 | |
bdd8818e MH |
1644 | return hci_uart_unregister_proto(&bcm_proto); |
1645 | } |