Commit | Line | Data |
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45051539 | 1 | // SPDX-License-Identifier: GPL-2.0-only |
0ff252c1 BYTK |
2 | /* |
3 | * Bluetooth Software UART Qualcomm protocol | |
4 | * | |
5 | * HCI_IBS (HCI In-Band Sleep) is Qualcomm's power management | |
6 | * protocol extension to H4. | |
7 | * | |
8 | * Copyright (C) 2007 Texas Instruments, Inc. | |
fa9ad876 | 9 | * Copyright (c) 2010, 2012, 2018 The Linux Foundation. All rights reserved. |
0ff252c1 BYTK |
10 | * |
11 | * Acknowledgements: | |
12 | * This file is based on hci_ll.c, which was... | |
13 | * Written by Ohad Ben-Cohen <ohad@bencohen.org> | |
14 | * which was in turn based on hci_h4.c, which was written | |
15 | * by Maxim Krasnyansky and Marcel Holtmann. | |
0ff252c1 BYTK |
16 | */ |
17 | ||
18 | #include <linux/kernel.h> | |
05ba533c | 19 | #include <linux/clk.h> |
2faa3f15 | 20 | #include <linux/completion.h> |
0ff252c1 | 21 | #include <linux/debugfs.h> |
fa9ad876 | 22 | #include <linux/delay.h> |
d841502c | 23 | #include <linux/devcoredump.h> |
fa9ad876 | 24 | #include <linux/device.h> |
05ba533c TE |
25 | #include <linux/gpio/consumer.h> |
26 | #include <linux/mod_devicetable.h> | |
27 | #include <linux/module.h> | |
e15f44fb | 28 | #include <linux/of.h> |
e5d6468f | 29 | #include <linux/acpi.h> |
fa9ad876 | 30 | #include <linux/platform_device.h> |
9a15ce68 | 31 | #include <linux/pwrseq/consumer.h> |
fa9ad876 | 32 | #include <linux/regulator/consumer.h> |
05ba533c | 33 | #include <linux/serdev.h> |
7c2c3e63 | 34 | #include <linux/mutex.h> |
c614ca3f | 35 | #include <asm/unaligned.h> |
0ff252c1 BYTK |
36 | |
37 | #include <net/bluetooth/bluetooth.h> | |
38 | #include <net/bluetooth/hci_core.h> | |
39 | ||
40 | #include "hci_uart.h" | |
41 | #include "btqca.h" | |
42 | ||
43 | /* HCI_IBS protocol messages */ | |
44 | #define HCI_IBS_SLEEP_IND 0xFE | |
45 | #define HCI_IBS_WAKE_IND 0xFD | |
46 | #define HCI_IBS_WAKE_ACK 0xFC | |
f81b001a | 47 | #define HCI_MAX_IBS_SIZE 10 |
0ff252c1 | 48 | |
f81b001a | 49 | #define IBS_WAKE_RETRANS_TIMEOUT_MS 100 |
2d68476c | 50 | #define IBS_BTSOC_TX_IDLE_TIMEOUT_MS 200 |
41d5b25f | 51 | #define IBS_HOST_TX_IDLE_TIMEOUT_MS 2000 |
94d66714 | 52 | #define CMD_TRANS_TIMEOUT_MS 100 |
d841502c | 53 | #define MEMDUMP_TIMEOUT_MS 8000 |
ad3a9c0e VLNG |
54 | #define IBS_DISABLE_SSR_TIMEOUT_MS \ |
55 | (MEMDUMP_TIMEOUT_MS + FW_DOWNLOAD_TIMEOUT_MS) | |
2be43aba | 56 | #define FW_DOWNLOAD_TIMEOUT_MS 3000 |
0ff252c1 | 57 | |
05ba533c TE |
58 | /* susclk rate */ |
59 | #define SUSCLK_RATE_32KHZ 32768 | |
60 | ||
c614ca3f BG |
61 | /* Controller debug log header */ |
62 | #define QCA_DEBUG_HANDLE 0x2EDC | |
63 | ||
bb2500ab RL |
64 | /* max retry count when init fails */ |
65 | #define MAX_INIT_RETRIES 3 | |
66 | ||
d841502c BG |
67 | /* Controller dump header */ |
68 | #define QCA_SSR_DUMP_HANDLE 0x0108 | |
69 | #define QCA_DUMP_PACKET_SIZE 255 | |
70 | #define QCA_LAST_SEQUENCE_NUM 0xFFFF | |
71 | #define QCA_CRASHBYTE_PACKET_LEN 1096 | |
72 | #define QCA_MEMDUMP_BYTE 0xFB | |
73 | ||
62a91990 | 74 | enum qca_flags { |
2be43aba | 75 | QCA_IBS_DISABLED, |
2faa3f15 | 76 | QCA_DROP_VENDOR_EVENT, |
41d5b25f | 77 | QCA_SUSPENDING, |
7c2c3e63 | 78 | QCA_MEMDUMP_COLLECTION, |
3344537f | 79 | QCA_HW_ERROR_EVENT, |
2be43aba | 80 | QCA_SSR_TRIGGERED, |
55c0bd77 | 81 | QCA_BT_OFF, |
47c5d829 JH |
82 | QCA_ROM_FW, |
83 | QCA_DEBUGFS_CREATED, | |
62a91990 MK |
84 | }; |
85 | ||
a228f7a4 APS |
86 | enum qca_capabilities { |
87 | QCA_CAP_WIDEBAND_SPEECH = BIT(0), | |
54780138 | 88 | QCA_CAP_VALID_LE_STATES = BIT(1), |
a228f7a4 | 89 | }; |
d841502c | 90 | |
0ff252c1 BYTK |
91 | /* HCI_IBS transmit side sleep protocol states */ |
92 | enum tx_ibs_states { | |
93 | HCI_IBS_TX_ASLEEP, | |
94 | HCI_IBS_TX_WAKING, | |
95 | HCI_IBS_TX_AWAKE, | |
96 | }; | |
97 | ||
98 | /* HCI_IBS receive side sleep protocol states */ | |
99 | enum rx_states { | |
100 | HCI_IBS_RX_ASLEEP, | |
101 | HCI_IBS_RX_AWAKE, | |
102 | }; | |
103 | ||
104 | /* HCI_IBS transmit and receive side clock state vote */ | |
105 | enum hci_ibs_clock_state_vote { | |
106 | HCI_IBS_VOTE_STATS_UPDATE, | |
107 | HCI_IBS_TX_VOTE_CLOCK_ON, | |
108 | HCI_IBS_TX_VOTE_CLOCK_OFF, | |
109 | HCI_IBS_RX_VOTE_CLOCK_ON, | |
110 | HCI_IBS_RX_VOTE_CLOCK_OFF, | |
111 | }; | |
112 | ||
d841502c BG |
113 | /* Controller memory dump states */ |
114 | enum qca_memdump_states { | |
115 | QCA_MEMDUMP_IDLE, | |
116 | QCA_MEMDUMP_COLLECTING, | |
117 | QCA_MEMDUMP_COLLECTED, | |
118 | QCA_MEMDUMP_TIMEOUT, | |
119 | }; | |
120 | ||
06d3fdfc | 121 | struct qca_memdump_info { |
d841502c BG |
122 | u32 current_seq_no; |
123 | u32 received_dump; | |
e5aeebdd | 124 | u32 ram_dump_size; |
d841502c BG |
125 | }; |
126 | ||
127 | struct qca_memdump_event_hdr { | |
128 | __u8 evt; | |
129 | __u8 plen; | |
130 | __u16 opcode; | |
fec2972a | 131 | __le16 seq_no; |
d841502c BG |
132 | __u8 reserved; |
133 | } __packed; | |
134 | ||
135 | ||
136 | struct qca_dump_size { | |
fec2972a | 137 | __le32 dump_size; |
d841502c BG |
138 | } __packed; |
139 | ||
0ff252c1 BYTK |
140 | struct qca_data { |
141 | struct hci_uart *hu; | |
142 | struct sk_buff *rx_skb; | |
143 | struct sk_buff_head txq; | |
144 | struct sk_buff_head tx_wait_q; /* HCI_IBS wait queue */ | |
d841502c | 145 | struct sk_buff_head rx_memdump_q; /* Memdump wait queue */ |
0ff252c1 BYTK |
146 | spinlock_t hci_ibs_lock; /* HCI_IBS state lock */ |
147 | u8 tx_ibs_state; /* HCI_IBS transmit side power state*/ | |
148 | u8 rx_ibs_state; /* HCI_IBS receive side power state */ | |
621a5f7a VK |
149 | bool tx_vote; /* Clock must be on for TX */ |
150 | bool rx_vote; /* Clock must be on for RX */ | |
0ff252c1 BYTK |
151 | struct timer_list tx_idle_timer; |
152 | u32 tx_idle_delay; | |
153 | struct timer_list wake_retrans_timer; | |
154 | u32 wake_retrans; | |
155 | struct workqueue_struct *workqueue; | |
156 | struct work_struct ws_awake_rx; | |
157 | struct work_struct ws_awake_device; | |
158 | struct work_struct ws_rx_vote_off; | |
159 | struct work_struct ws_tx_vote_off; | |
d841502c | 160 | struct work_struct ctrl_memdump_evt; |
7c2c3e63 | 161 | struct delayed_work ctrl_memdump_timeout; |
06d3fdfc | 162 | struct qca_memdump_info *qca_memdump; |
0ff252c1 | 163 | unsigned long flags; |
2faa3f15 | 164 | struct completion drop_ev_comp; |
41d5b25f | 165 | wait_queue_head_t suspend_wait_q; |
d841502c | 166 | enum qca_memdump_states memdump_state; |
7c2c3e63 | 167 | struct mutex hci_memdump_lock; |
0ff252c1 | 168 | |
06d3fdfc STA |
169 | u16 fw_version; |
170 | u16 controller_id; | |
0ff252c1 BYTK |
171 | /* For debugging purpose */ |
172 | u64 ibs_sent_wacks; | |
173 | u64 ibs_sent_slps; | |
174 | u64 ibs_sent_wakes; | |
175 | u64 ibs_recv_wacks; | |
176 | u64 ibs_recv_slps; | |
177 | u64 ibs_recv_wakes; | |
178 | u64 vote_last_jif; | |
179 | u32 vote_on_ms; | |
180 | u32 vote_off_ms; | |
181 | u64 tx_votes_on; | |
182 | u64 rx_votes_on; | |
183 | u64 tx_votes_off; | |
184 | u64 rx_votes_off; | |
185 | u64 votes_on; | |
186 | u64 votes_off; | |
187 | }; | |
188 | ||
83d9c5e5 BG |
189 | enum qca_speed_type { |
190 | QCA_INIT_SPEED = 1, | |
191 | QCA_OPER_SPEED | |
192 | }; | |
193 | ||
fa9ad876 BG |
194 | /* |
195 | * Voltage regulator information required for configuring the | |
196 | * QCA Bluetooth chipset | |
197 | */ | |
198 | struct qca_vreg { | |
199 | const char *name; | |
fa9ad876 BG |
200 | unsigned int load_uA; |
201 | }; | |
202 | ||
a228f7a4 | 203 | struct qca_device_data { |
fa9ad876 BG |
204 | enum qca_btsoc_type soc_type; |
205 | struct qca_vreg *vregs; | |
206 | size_t num_vregs; | |
a228f7a4 | 207 | uint32_t capabilities; |
fa9ad876 BG |
208 | }; |
209 | ||
210 | /* | |
211 | * Platform data for the QCA Bluetooth power driver. | |
212 | */ | |
213 | struct qca_power { | |
214 | struct device *dev; | |
fa9ad876 | 215 | struct regulator_bulk_data *vreg_bulk; |
163d42fa | 216 | int num_vregs; |
fa9ad876 | 217 | bool vregs_on; |
9a15ce68 | 218 | struct pwrseq_desc *pwrseq; |
fa9ad876 BG |
219 | }; |
220 | ||
05ba533c TE |
221 | struct qca_serdev { |
222 | struct hci_uart serdev_hu; | |
223 | struct gpio_desc *bt_en; | |
d8f97da1 | 224 | struct gpio_desc *sw_ctrl; |
05ba533c | 225 | struct clk *susclk; |
fa9ad876 BG |
226 | enum qca_btsoc_type btsoc_type; |
227 | struct qca_power *bt_power; | |
228 | u32 init_speed; | |
229 | u32 oper_speed; | |
77f45cca | 230 | bool bdaddr_property_broken; |
99c905c6 | 231 | const char *firmware_name; |
05ba533c TE |
232 | }; |
233 | ||
a9314e76 BA |
234 | static int qca_regulator_enable(struct qca_serdev *qcadev); |
235 | static void qca_regulator_disable(struct qca_serdev *qcadev); | |
c2d78273 | 236 | static void qca_power_shutdown(struct hci_uart *hu); |
3e4be65e | 237 | static int qca_power_off(struct hci_dev *hdev); |
d841502c | 238 | static void qca_controller_memdump(struct work_struct *work); |
06d3fdfc | 239 | static void qca_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb); |
fa9ad876 | 240 | |
4fdd5a4f MK |
241 | static enum qca_btsoc_type qca_soc_type(struct hci_uart *hu) |
242 | { | |
243 | enum qca_btsoc_type soc_type; | |
244 | ||
245 | if (hu->serdev) { | |
246 | struct qca_serdev *qsd = serdev_device_get_drvdata(hu->serdev); | |
247 | ||
248 | soc_type = qsd->btsoc_type; | |
249 | } else { | |
250 | soc_type = QCA_ROME; | |
251 | } | |
252 | ||
253 | return soc_type; | |
254 | } | |
255 | ||
99c905c6 RL |
256 | static const char *qca_get_firmware_name(struct hci_uart *hu) |
257 | { | |
258 | if (hu->serdev) { | |
259 | struct qca_serdev *qsd = serdev_device_get_drvdata(hu->serdev); | |
260 | ||
261 | return qsd->firmware_name; | |
262 | } else { | |
263 | return NULL; | |
264 | } | |
265 | } | |
266 | ||
0ff252c1 BYTK |
267 | static void __serial_clock_on(struct tty_struct *tty) |
268 | { | |
269 | /* TODO: Some chipset requires to enable UART clock on client | |
270 | * side to save power consumption or manual work is required. | |
271 | * Please put your code to control UART clock here if needed | |
272 | */ | |
273 | } | |
274 | ||
275 | static void __serial_clock_off(struct tty_struct *tty) | |
276 | { | |
277 | /* TODO: Some chipset requires to disable UART clock on client | |
278 | * side to save power consumption or manual work is required. | |
279 | * Please put your code to control UART clock off here if needed | |
280 | */ | |
281 | } | |
282 | ||
283 | /* serial_clock_vote needs to be called with the ibs lock held */ | |
284 | static void serial_clock_vote(unsigned long vote, struct hci_uart *hu) | |
285 | { | |
286 | struct qca_data *qca = hu->priv; | |
287 | unsigned int diff; | |
288 | ||
289 | bool old_vote = (qca->tx_vote | qca->rx_vote); | |
290 | bool new_vote; | |
291 | ||
292 | switch (vote) { | |
293 | case HCI_IBS_VOTE_STATS_UPDATE: | |
294 | diff = jiffies_to_msecs(jiffies - qca->vote_last_jif); | |
295 | ||
296 | if (old_vote) | |
297 | qca->vote_off_ms += diff; | |
298 | else | |
299 | qca->vote_on_ms += diff; | |
300 | return; | |
301 | ||
302 | case HCI_IBS_TX_VOTE_CLOCK_ON: | |
303 | qca->tx_vote = true; | |
304 | qca->tx_votes_on++; | |
0ff252c1 BYTK |
305 | break; |
306 | ||
307 | case HCI_IBS_RX_VOTE_CLOCK_ON: | |
308 | qca->rx_vote = true; | |
309 | qca->rx_votes_on++; | |
0ff252c1 BYTK |
310 | break; |
311 | ||
312 | case HCI_IBS_TX_VOTE_CLOCK_OFF: | |
313 | qca->tx_vote = false; | |
314 | qca->tx_votes_off++; | |
0ff252c1 BYTK |
315 | break; |
316 | ||
317 | case HCI_IBS_RX_VOTE_CLOCK_OFF: | |
318 | qca->rx_vote = false; | |
319 | qca->rx_votes_off++; | |
0ff252c1 BYTK |
320 | break; |
321 | ||
322 | default: | |
323 | BT_ERR("Voting irregularity"); | |
324 | return; | |
325 | } | |
326 | ||
7310dd3f MK |
327 | new_vote = qca->rx_vote | qca->tx_vote; |
328 | ||
0ff252c1 BYTK |
329 | if (new_vote != old_vote) { |
330 | if (new_vote) | |
331 | __serial_clock_on(hu->tty); | |
332 | else | |
333 | __serial_clock_off(hu->tty); | |
334 | ||
ce26d813 PK |
335 | BT_DBG("Vote serial clock %s(%s)", new_vote ? "true" : "false", |
336 | vote ? "true" : "false"); | |
0ff252c1 BYTK |
337 | |
338 | diff = jiffies_to_msecs(jiffies - qca->vote_last_jif); | |
339 | ||
340 | if (new_vote) { | |
341 | qca->votes_on++; | |
342 | qca->vote_off_ms += diff; | |
343 | } else { | |
344 | qca->votes_off++; | |
345 | qca->vote_on_ms += diff; | |
346 | } | |
347 | qca->vote_last_jif = jiffies; | |
348 | } | |
349 | } | |
350 | ||
351 | /* Builds and sends an HCI_IBS command packet. | |
352 | * These are very simple packets with only 1 cmd byte. | |
353 | */ | |
354 | static int send_hci_ibs_cmd(u8 cmd, struct hci_uart *hu) | |
355 | { | |
356 | int err = 0; | |
357 | struct sk_buff *skb = NULL; | |
358 | struct qca_data *qca = hu->priv; | |
359 | ||
360 | BT_DBG("hu %p send hci ibs cmd 0x%x", hu, cmd); | |
361 | ||
362 | skb = bt_skb_alloc(1, GFP_ATOMIC); | |
363 | if (!skb) { | |
364 | BT_ERR("Failed to allocate memory for HCI_IBS packet"); | |
365 | return -ENOMEM; | |
366 | } | |
367 | ||
368 | /* Assign HCI_IBS type */ | |
634fef61 | 369 | skb_put_u8(skb, cmd); |
0ff252c1 BYTK |
370 | |
371 | skb_queue_tail(&qca->txq, skb); | |
372 | ||
373 | return err; | |
374 | } | |
375 | ||
376 | static void qca_wq_awake_device(struct work_struct *work) | |
377 | { | |
378 | struct qca_data *qca = container_of(work, struct qca_data, | |
379 | ws_awake_device); | |
380 | struct hci_uart *hu = qca->hu; | |
381 | unsigned long retrans_delay; | |
31fb1bbd | 382 | unsigned long flags; |
0ff252c1 BYTK |
383 | |
384 | BT_DBG("hu %p wq awake device", hu); | |
385 | ||
386 | /* Vote for serial clock */ | |
387 | serial_clock_vote(HCI_IBS_TX_VOTE_CLOCK_ON, hu); | |
388 | ||
31fb1bbd | 389 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); |
0ff252c1 BYTK |
390 | |
391 | /* Send wake indication to device */ | |
392 | if (send_hci_ibs_cmd(HCI_IBS_WAKE_IND, hu) < 0) | |
393 | BT_ERR("Failed to send WAKE to device"); | |
394 | ||
395 | qca->ibs_sent_wakes++; | |
396 | ||
397 | /* Start retransmit timer */ | |
398 | retrans_delay = msecs_to_jiffies(qca->wake_retrans); | |
399 | mod_timer(&qca->wake_retrans_timer, jiffies + retrans_delay); | |
400 | ||
31fb1bbd | 401 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); |
0ff252c1 BYTK |
402 | |
403 | /* Actually send the packets */ | |
404 | hci_uart_tx_wakeup(hu); | |
405 | } | |
406 | ||
407 | static void qca_wq_awake_rx(struct work_struct *work) | |
408 | { | |
409 | struct qca_data *qca = container_of(work, struct qca_data, | |
410 | ws_awake_rx); | |
411 | struct hci_uart *hu = qca->hu; | |
31fb1bbd | 412 | unsigned long flags; |
0ff252c1 BYTK |
413 | |
414 | BT_DBG("hu %p wq awake rx", hu); | |
415 | ||
416 | serial_clock_vote(HCI_IBS_RX_VOTE_CLOCK_ON, hu); | |
417 | ||
31fb1bbd | 418 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); |
0ff252c1 BYTK |
419 | qca->rx_ibs_state = HCI_IBS_RX_AWAKE; |
420 | ||
421 | /* Always acknowledge device wake up, | |
422 | * sending IBS message doesn't count as TX ON. | |
423 | */ | |
424 | if (send_hci_ibs_cmd(HCI_IBS_WAKE_ACK, hu) < 0) | |
425 | BT_ERR("Failed to acknowledge device wake up"); | |
426 | ||
427 | qca->ibs_sent_wacks++; | |
428 | ||
31fb1bbd | 429 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); |
0ff252c1 BYTK |
430 | |
431 | /* Actually send the packets */ | |
432 | hci_uart_tx_wakeup(hu); | |
433 | } | |
434 | ||
435 | static void qca_wq_serial_rx_clock_vote_off(struct work_struct *work) | |
436 | { | |
437 | struct qca_data *qca = container_of(work, struct qca_data, | |
438 | ws_rx_vote_off); | |
439 | struct hci_uart *hu = qca->hu; | |
440 | ||
441 | BT_DBG("hu %p rx clock vote off", hu); | |
442 | ||
443 | serial_clock_vote(HCI_IBS_RX_VOTE_CLOCK_OFF, hu); | |
444 | } | |
445 | ||
446 | static void qca_wq_serial_tx_clock_vote_off(struct work_struct *work) | |
447 | { | |
448 | struct qca_data *qca = container_of(work, struct qca_data, | |
449 | ws_tx_vote_off); | |
450 | struct hci_uart *hu = qca->hu; | |
451 | ||
452 | BT_DBG("hu %p tx clock vote off", hu); | |
453 | ||
454 | /* Run HCI tx handling unlocked */ | |
455 | hci_uart_tx_wakeup(hu); | |
456 | ||
457 | /* Now that message queued to tty driver, vote for tty clocks off. | |
458 | * It is up to the tty driver to pend the clocks off until tx done. | |
459 | */ | |
460 | serial_clock_vote(HCI_IBS_TX_VOTE_CLOCK_OFF, hu); | |
461 | } | |
462 | ||
04356052 | 463 | static void hci_ibs_tx_idle_timeout(struct timer_list *t) |
0ff252c1 | 464 | { |
04356052 KC |
465 | struct qca_data *qca = from_timer(qca, t, tx_idle_timer); |
466 | struct hci_uart *hu = qca->hu; | |
0ff252c1 BYTK |
467 | unsigned long flags; |
468 | ||
469 | BT_DBG("hu %p idle timeout in %d state", hu, qca->tx_ibs_state); | |
470 | ||
471 | spin_lock_irqsave_nested(&qca->hci_ibs_lock, | |
472 | flags, SINGLE_DEPTH_NESTING); | |
473 | ||
474 | switch (qca->tx_ibs_state) { | |
475 | case HCI_IBS_TX_AWAKE: | |
476 | /* TX_IDLE, go to SLEEP */ | |
477 | if (send_hci_ibs_cmd(HCI_IBS_SLEEP_IND, hu) < 0) { | |
478 | BT_ERR("Failed to send SLEEP to device"); | |
479 | break; | |
480 | } | |
481 | qca->tx_ibs_state = HCI_IBS_TX_ASLEEP; | |
482 | qca->ibs_sent_slps++; | |
483 | queue_work(qca->workqueue, &qca->ws_tx_vote_off); | |
484 | break; | |
485 | ||
486 | case HCI_IBS_TX_ASLEEP: | |
487 | case HCI_IBS_TX_WAKING: | |
0ff252c1 | 488 | default: |
e059a465 | 489 | BT_ERR("Spurious timeout tx state %d", qca->tx_ibs_state); |
0ff252c1 BYTK |
490 | break; |
491 | } | |
492 | ||
493 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
494 | } | |
495 | ||
04356052 | 496 | static void hci_ibs_wake_retrans_timeout(struct timer_list *t) |
0ff252c1 | 497 | { |
04356052 KC |
498 | struct qca_data *qca = from_timer(qca, t, wake_retrans_timer); |
499 | struct hci_uart *hu = qca->hu; | |
0ff252c1 | 500 | unsigned long flags, retrans_delay; |
a9137188 | 501 | bool retransmit = false; |
0ff252c1 BYTK |
502 | |
503 | BT_DBG("hu %p wake retransmit timeout in %d state", | |
504 | hu, qca->tx_ibs_state); | |
505 | ||
506 | spin_lock_irqsave_nested(&qca->hci_ibs_lock, | |
507 | flags, SINGLE_DEPTH_NESTING); | |
508 | ||
41d5b25f CC |
509 | /* Don't retransmit the HCI_IBS_WAKE_IND when suspending. */ |
510 | if (test_bit(QCA_SUSPENDING, &qca->flags)) { | |
511 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
512 | return; | |
513 | } | |
514 | ||
0ff252c1 BYTK |
515 | switch (qca->tx_ibs_state) { |
516 | case HCI_IBS_TX_WAKING: | |
517 | /* No WAKE_ACK, retransmit WAKE */ | |
a9137188 | 518 | retransmit = true; |
0ff252c1 BYTK |
519 | if (send_hci_ibs_cmd(HCI_IBS_WAKE_IND, hu) < 0) { |
520 | BT_ERR("Failed to acknowledge device wake up"); | |
521 | break; | |
522 | } | |
523 | qca->ibs_sent_wakes++; | |
524 | retrans_delay = msecs_to_jiffies(qca->wake_retrans); | |
525 | mod_timer(&qca->wake_retrans_timer, jiffies + retrans_delay); | |
526 | break; | |
527 | ||
528 | case HCI_IBS_TX_ASLEEP: | |
529 | case HCI_IBS_TX_AWAKE: | |
0ff252c1 | 530 | default: |
e059a465 | 531 | BT_ERR("Spurious timeout tx state %d", qca->tx_ibs_state); |
0ff252c1 BYTK |
532 | break; |
533 | } | |
534 | ||
535 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
536 | ||
537 | if (retransmit) | |
538 | hci_uart_tx_wakeup(hu); | |
539 | } | |
540 | ||
7c2c3e63 VLNG |
541 | |
542 | static void qca_controller_memdump_timeout(struct work_struct *work) | |
d841502c | 543 | { |
7c2c3e63 VLNG |
544 | struct qca_data *qca = container_of(work, struct qca_data, |
545 | ctrl_memdump_timeout.work); | |
d841502c | 546 | struct hci_uart *hu = qca->hu; |
7c2c3e63 VLNG |
547 | |
548 | mutex_lock(&qca->hci_memdump_lock); | |
549 | if (test_bit(QCA_MEMDUMP_COLLECTION, &qca->flags)) { | |
550 | qca->memdump_state = QCA_MEMDUMP_TIMEOUT; | |
551 | if (!test_bit(QCA_HW_ERROR_EVENT, &qca->flags)) { | |
552 | /* Inject hw error event to reset the device | |
553 | * and driver. | |
554 | */ | |
555 | hci_reset_dev(hu->hdev); | |
556 | } | |
557 | } | |
558 | ||
559 | mutex_unlock(&qca->hci_memdump_lock); | |
d841502c BG |
560 | } |
561 | ||
7c2c3e63 | 562 | |
0ff252c1 BYTK |
563 | /* Initialize protocol */ |
564 | static int qca_open(struct hci_uart *hu) | |
565 | { | |
05ba533c | 566 | struct qca_serdev *qcadev; |
0ff252c1 BYTK |
567 | struct qca_data *qca; |
568 | ||
569 | BT_DBG("hu %p qca_open", hu); | |
570 | ||
b36a1552 VD |
571 | if (!hci_uart_has_flow_control(hu)) |
572 | return -EOPNOTSUPP; | |
573 | ||
973dd9c4 | 574 | qca = kzalloc(sizeof(*qca), GFP_KERNEL); |
0ff252c1 BYTK |
575 | if (!qca) |
576 | return -ENOMEM; | |
577 | ||
578 | skb_queue_head_init(&qca->txq); | |
579 | skb_queue_head_init(&qca->tx_wait_q); | |
d841502c | 580 | skb_queue_head_init(&qca->rx_memdump_q); |
0ff252c1 | 581 | spin_lock_init(&qca->hci_ibs_lock); |
7c2c3e63 | 582 | mutex_init(&qca->hci_memdump_lock); |
fac9a602 | 583 | qca->workqueue = alloc_ordered_workqueue("qca_wq", 0); |
0ff252c1 BYTK |
584 | if (!qca->workqueue) { |
585 | BT_ERR("QCA Workqueue not initialized properly"); | |
586 | kfree(qca); | |
587 | return -ENOMEM; | |
588 | } | |
589 | ||
590 | INIT_WORK(&qca->ws_awake_rx, qca_wq_awake_rx); | |
591 | INIT_WORK(&qca->ws_awake_device, qca_wq_awake_device); | |
592 | INIT_WORK(&qca->ws_rx_vote_off, qca_wq_serial_rx_clock_vote_off); | |
593 | INIT_WORK(&qca->ws_tx_vote_off, qca_wq_serial_tx_clock_vote_off); | |
d841502c | 594 | INIT_WORK(&qca->ctrl_memdump_evt, qca_controller_memdump); |
7c2c3e63 VLNG |
595 | INIT_DELAYED_WORK(&qca->ctrl_memdump_timeout, |
596 | qca_controller_memdump_timeout); | |
41d5b25f CC |
597 | init_waitqueue_head(&qca->suspend_wait_q); |
598 | ||
0ff252c1 | 599 | qca->hu = hu; |
2faa3f15 | 600 | init_completion(&qca->drop_ev_comp); |
0ff252c1 BYTK |
601 | |
602 | /* Assume we start with both sides asleep -- extra wakes OK */ | |
603 | qca->tx_ibs_state = HCI_IBS_TX_ASLEEP; | |
604 | qca->rx_ibs_state = HCI_IBS_RX_ASLEEP; | |
605 | ||
0ff252c1 | 606 | qca->vote_last_jif = jiffies; |
0ff252c1 BYTK |
607 | |
608 | hu->priv = qca; | |
609 | ||
05ba533c | 610 | if (hu->serdev) { |
05ba533c | 611 | qcadev = serdev_device_get_drvdata(hu->serdev); |
37aee136 | 612 | |
691d54d0 NA |
613 | switch (qcadev->btsoc_type) { |
614 | case QCA_WCN3988: | |
615 | case QCA_WCN3990: | |
616 | case QCA_WCN3991: | |
617 | case QCA_WCN3998: | |
618 | case QCA_WCN6750: | |
fa9ad876 | 619 | hu->init_speed = qcadev->init_speed; |
691d54d0 NA |
620 | break; |
621 | ||
622 | default: | |
623 | break; | |
624 | } | |
37aee136 CH |
625 | |
626 | if (qcadev->oper_speed) | |
fa9ad876 | 627 | hu->oper_speed = qcadev->oper_speed; |
05ba533c TE |
628 | } |
629 | ||
fa9ad876 BG |
630 | timer_setup(&qca->wake_retrans_timer, hci_ibs_wake_retrans_timeout, 0); |
631 | qca->wake_retrans = IBS_WAKE_RETRANS_TIMEOUT_MS; | |
632 | ||
633 | timer_setup(&qca->tx_idle_timer, hci_ibs_tx_idle_timeout, 0); | |
41d5b25f | 634 | qca->tx_idle_delay = IBS_HOST_TX_IDLE_TIMEOUT_MS; |
fa9ad876 | 635 | |
0ff252c1 BYTK |
636 | BT_DBG("HCI_UART_QCA open, tx_idle_delay=%u, wake_retrans=%u", |
637 | qca->tx_idle_delay, qca->wake_retrans); | |
638 | ||
639 | return 0; | |
640 | } | |
641 | ||
642 | static void qca_debugfs_init(struct hci_dev *hdev) | |
643 | { | |
644 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
645 | struct qca_data *qca = hu->priv; | |
646 | struct dentry *ibs_dir; | |
647 | umode_t mode; | |
648 | ||
649 | if (!hdev->debugfs) | |
650 | return; | |
651 | ||
47c5d829 JH |
652 | if (test_and_set_bit(QCA_DEBUGFS_CREATED, &qca->flags)) |
653 | return; | |
654 | ||
0ff252c1 BYTK |
655 | ibs_dir = debugfs_create_dir("ibs", hdev->debugfs); |
656 | ||
657 | /* read only */ | |
99719449 | 658 | mode = 0444; |
0ff252c1 BYTK |
659 | debugfs_create_u8("tx_ibs_state", mode, ibs_dir, &qca->tx_ibs_state); |
660 | debugfs_create_u8("rx_ibs_state", mode, ibs_dir, &qca->rx_ibs_state); | |
661 | debugfs_create_u64("ibs_sent_sleeps", mode, ibs_dir, | |
662 | &qca->ibs_sent_slps); | |
663 | debugfs_create_u64("ibs_sent_wakes", mode, ibs_dir, | |
664 | &qca->ibs_sent_wakes); | |
665 | debugfs_create_u64("ibs_sent_wake_acks", mode, ibs_dir, | |
666 | &qca->ibs_sent_wacks); | |
667 | debugfs_create_u64("ibs_recv_sleeps", mode, ibs_dir, | |
668 | &qca->ibs_recv_slps); | |
669 | debugfs_create_u64("ibs_recv_wakes", mode, ibs_dir, | |
670 | &qca->ibs_recv_wakes); | |
671 | debugfs_create_u64("ibs_recv_wake_acks", mode, ibs_dir, | |
672 | &qca->ibs_recv_wacks); | |
10be6c0f | 673 | debugfs_create_bool("tx_vote", mode, ibs_dir, &qca->tx_vote); |
0ff252c1 BYTK |
674 | debugfs_create_u64("tx_votes_on", mode, ibs_dir, &qca->tx_votes_on); |
675 | debugfs_create_u64("tx_votes_off", mode, ibs_dir, &qca->tx_votes_off); | |
10be6c0f | 676 | debugfs_create_bool("rx_vote", mode, ibs_dir, &qca->rx_vote); |
0ff252c1 BYTK |
677 | debugfs_create_u64("rx_votes_on", mode, ibs_dir, &qca->rx_votes_on); |
678 | debugfs_create_u64("rx_votes_off", mode, ibs_dir, &qca->rx_votes_off); | |
679 | debugfs_create_u64("votes_on", mode, ibs_dir, &qca->votes_on); | |
680 | debugfs_create_u64("votes_off", mode, ibs_dir, &qca->votes_off); | |
681 | debugfs_create_u32("vote_on_ms", mode, ibs_dir, &qca->vote_on_ms); | |
682 | debugfs_create_u32("vote_off_ms", mode, ibs_dir, &qca->vote_off_ms); | |
683 | ||
684 | /* read/write */ | |
99719449 | 685 | mode = 0644; |
0ff252c1 BYTK |
686 | debugfs_create_u32("wake_retrans", mode, ibs_dir, &qca->wake_retrans); |
687 | debugfs_create_u32("tx_idle_delay", mode, ibs_dir, | |
688 | &qca->tx_idle_delay); | |
689 | } | |
690 | ||
691 | /* Flush protocol data */ | |
692 | static int qca_flush(struct hci_uart *hu) | |
693 | { | |
694 | struct qca_data *qca = hu->priv; | |
695 | ||
696 | BT_DBG("hu %p qca flush", hu); | |
697 | ||
698 | skb_queue_purge(&qca->tx_wait_q); | |
699 | skb_queue_purge(&qca->txq); | |
700 | ||
701 | return 0; | |
702 | } | |
703 | ||
704 | /* Close protocol */ | |
705 | static int qca_close(struct hci_uart *hu) | |
706 | { | |
707 | struct qca_data *qca = hu->priv; | |
708 | ||
709 | BT_DBG("hu %p qca close", hu); | |
710 | ||
711 | serial_clock_vote(HCI_IBS_VOTE_STATS_UPDATE, hu); | |
712 | ||
713 | skb_queue_purge(&qca->tx_wait_q); | |
714 | skb_queue_purge(&qca->txq); | |
d841502c | 715 | skb_queue_purge(&qca->rx_memdump_q); |
e0d3da98 TG |
716 | /* |
717 | * Shut the timers down so they can't be rearmed when | |
718 | * destroy_workqueue() drains pending work which in turn might try | |
719 | * to arm a timer. After shutdown rearm attempts are silently | |
720 | * ignored by the timer core code. | |
721 | */ | |
722 | timer_shutdown_sync(&qca->tx_idle_timer); | |
723 | timer_shutdown_sync(&qca->wake_retrans_timer); | |
0ff252c1 BYTK |
724 | destroy_workqueue(qca->workqueue); |
725 | qca->hu = NULL; | |
726 | ||
727 | kfree_skb(qca->rx_skb); | |
728 | ||
729 | hu->priv = NULL; | |
730 | ||
731 | kfree(qca); | |
732 | ||
733 | return 0; | |
734 | } | |
735 | ||
736 | /* Called upon a wake-up-indication from the device. | |
737 | */ | |
738 | static void device_want_to_wakeup(struct hci_uart *hu) | |
739 | { | |
740 | unsigned long flags; | |
741 | struct qca_data *qca = hu->priv; | |
742 | ||
743 | BT_DBG("hu %p want to wake up", hu); | |
744 | ||
745 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); | |
746 | ||
747 | qca->ibs_recv_wakes++; | |
748 | ||
41d5b25f CC |
749 | /* Don't wake the rx up when suspending. */ |
750 | if (test_bit(QCA_SUSPENDING, &qca->flags)) { | |
751 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
752 | return; | |
753 | } | |
754 | ||
0ff252c1 BYTK |
755 | switch (qca->rx_ibs_state) { |
756 | case HCI_IBS_RX_ASLEEP: | |
757 | /* Make sure clock is on - we may have turned clock off since | |
758 | * receiving the wake up indicator awake rx clock. | |
759 | */ | |
760 | queue_work(qca->workqueue, &qca->ws_awake_rx); | |
761 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
762 | return; | |
763 | ||
764 | case HCI_IBS_RX_AWAKE: | |
765 | /* Always acknowledge device wake up, | |
766 | * sending IBS message doesn't count as TX ON. | |
767 | */ | |
768 | if (send_hci_ibs_cmd(HCI_IBS_WAKE_ACK, hu) < 0) { | |
769 | BT_ERR("Failed to acknowledge device wake up"); | |
770 | break; | |
771 | } | |
772 | qca->ibs_sent_wacks++; | |
773 | break; | |
774 | ||
775 | default: | |
776 | /* Any other state is illegal */ | |
777 | BT_ERR("Received HCI_IBS_WAKE_IND in rx state %d", | |
778 | qca->rx_ibs_state); | |
779 | break; | |
780 | } | |
781 | ||
782 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
783 | ||
784 | /* Actually send the packets */ | |
785 | hci_uart_tx_wakeup(hu); | |
786 | } | |
787 | ||
788 | /* Called upon a sleep-indication from the device. | |
789 | */ | |
790 | static void device_want_to_sleep(struct hci_uart *hu) | |
791 | { | |
792 | unsigned long flags; | |
793 | struct qca_data *qca = hu->priv; | |
794 | ||
6600c080 | 795 | BT_DBG("hu %p want to sleep in %d state", hu, qca->rx_ibs_state); |
0ff252c1 BYTK |
796 | |
797 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); | |
798 | ||
799 | qca->ibs_recv_slps++; | |
800 | ||
801 | switch (qca->rx_ibs_state) { | |
802 | case HCI_IBS_RX_AWAKE: | |
803 | /* Update state */ | |
804 | qca->rx_ibs_state = HCI_IBS_RX_ASLEEP; | |
805 | /* Vote off rx clock under workqueue */ | |
806 | queue_work(qca->workqueue, &qca->ws_rx_vote_off); | |
807 | break; | |
808 | ||
809 | case HCI_IBS_RX_ASLEEP: | |
6600c080 | 810 | break; |
0ff252c1 BYTK |
811 | |
812 | default: | |
813 | /* Any other state is illegal */ | |
814 | BT_ERR("Received HCI_IBS_SLEEP_IND in rx state %d", | |
815 | qca->rx_ibs_state); | |
816 | break; | |
817 | } | |
818 | ||
41d5b25f CC |
819 | wake_up_interruptible(&qca->suspend_wait_q); |
820 | ||
0ff252c1 BYTK |
821 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); |
822 | } | |
823 | ||
824 | /* Called upon wake-up-acknowledgement from the device | |
825 | */ | |
826 | static void device_woke_up(struct hci_uart *hu) | |
827 | { | |
828 | unsigned long flags, idle_delay; | |
829 | struct qca_data *qca = hu->priv; | |
830 | struct sk_buff *skb = NULL; | |
831 | ||
832 | BT_DBG("hu %p woke up", hu); | |
833 | ||
834 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); | |
835 | ||
836 | qca->ibs_recv_wacks++; | |
837 | ||
41d5b25f CC |
838 | /* Don't react to the wake-up-acknowledgment when suspending. */ |
839 | if (test_bit(QCA_SUSPENDING, &qca->flags)) { | |
840 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
841 | return; | |
842 | } | |
843 | ||
0ff252c1 BYTK |
844 | switch (qca->tx_ibs_state) { |
845 | case HCI_IBS_TX_AWAKE: | |
846 | /* Expect one if we send 2 WAKEs */ | |
847 | BT_DBG("Received HCI_IBS_WAKE_ACK in tx state %d", | |
848 | qca->tx_ibs_state); | |
849 | break; | |
850 | ||
851 | case HCI_IBS_TX_WAKING: | |
852 | /* Send pending packets */ | |
853 | while ((skb = skb_dequeue(&qca->tx_wait_q))) | |
854 | skb_queue_tail(&qca->txq, skb); | |
855 | ||
856 | /* Switch timers and change state to HCI_IBS_TX_AWAKE */ | |
857 | del_timer(&qca->wake_retrans_timer); | |
858 | idle_delay = msecs_to_jiffies(qca->tx_idle_delay); | |
859 | mod_timer(&qca->tx_idle_timer, jiffies + idle_delay); | |
860 | qca->tx_ibs_state = HCI_IBS_TX_AWAKE; | |
861 | break; | |
862 | ||
863 | case HCI_IBS_TX_ASLEEP: | |
0ff252c1 BYTK |
864 | default: |
865 | BT_ERR("Received HCI_IBS_WAKE_ACK in tx state %d", | |
866 | qca->tx_ibs_state); | |
867 | break; | |
868 | } | |
869 | ||
870 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
871 | ||
872 | /* Actually send the packets */ | |
873 | hci_uart_tx_wakeup(hu); | |
874 | } | |
875 | ||
876 | /* Enqueue frame for transmittion (padding, crc, etc) may be called from | |
877 | * two simultaneous tasklets. | |
878 | */ | |
879 | static int qca_enqueue(struct hci_uart *hu, struct sk_buff *skb) | |
880 | { | |
881 | unsigned long flags = 0, idle_delay; | |
882 | struct qca_data *qca = hu->priv; | |
883 | ||
884 | BT_DBG("hu %p qca enq skb %p tx_ibs_state %d", hu, skb, | |
885 | qca->tx_ibs_state); | |
886 | ||
3344537f VLNG |
887 | if (test_bit(QCA_SSR_TRIGGERED, &qca->flags)) { |
888 | /* As SSR is in progress, ignore the packets */ | |
889 | bt_dev_dbg(hu->hdev, "SSR is in progress"); | |
890 | kfree_skb(skb); | |
891 | return 0; | |
892 | } | |
893 | ||
0ff252c1 | 894 | /* Prepend skb with frame type */ |
618e8bc2 | 895 | memcpy(skb_push(skb, 1), &hci_skb_pkt_type(skb), 1); |
0ff252c1 | 896 | |
035a960e BG |
897 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); |
898 | ||
0ff252c1 BYTK |
899 | /* Don't go to sleep in middle of patch download or |
900 | * Out-Of-Band(GPIOs control) sleep is selected. | |
41d5b25f | 901 | * Don't wake the device up when suspending. |
0ff252c1 | 902 | */ |
2be43aba | 903 | if (test_bit(QCA_IBS_DISABLED, &qca->flags) || |
41d5b25f | 904 | test_bit(QCA_SUSPENDING, &qca->flags)) { |
0ff252c1 | 905 | skb_queue_tail(&qca->txq, skb); |
035a960e | 906 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); |
0ff252c1 BYTK |
907 | return 0; |
908 | } | |
909 | ||
0ff252c1 BYTK |
910 | /* Act according to current state */ |
911 | switch (qca->tx_ibs_state) { | |
912 | case HCI_IBS_TX_AWAKE: | |
913 | BT_DBG("Device awake, sending normally"); | |
914 | skb_queue_tail(&qca->txq, skb); | |
915 | idle_delay = msecs_to_jiffies(qca->tx_idle_delay); | |
916 | mod_timer(&qca->tx_idle_timer, jiffies + idle_delay); | |
917 | break; | |
918 | ||
919 | case HCI_IBS_TX_ASLEEP: | |
920 | BT_DBG("Device asleep, waking up and queueing packet"); | |
921 | /* Save packet for later */ | |
922 | skb_queue_tail(&qca->tx_wait_q, skb); | |
923 | ||
924 | qca->tx_ibs_state = HCI_IBS_TX_WAKING; | |
925 | /* Schedule a work queue to wake up device */ | |
926 | queue_work(qca->workqueue, &qca->ws_awake_device); | |
927 | break; | |
928 | ||
929 | case HCI_IBS_TX_WAKING: | |
930 | BT_DBG("Device waking up, queueing packet"); | |
931 | /* Transient state; just keep packet for later */ | |
932 | skb_queue_tail(&qca->tx_wait_q, skb); | |
933 | break; | |
934 | ||
935 | default: | |
936 | BT_ERR("Illegal tx state: %d (losing packet)", | |
937 | qca->tx_ibs_state); | |
df4cfc91 | 938 | dev_kfree_skb_irq(skb); |
0ff252c1 BYTK |
939 | break; |
940 | } | |
941 | ||
942 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static int qca_ibs_sleep_ind(struct hci_dev *hdev, struct sk_buff *skb) | |
948 | { | |
949 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
950 | ||
951 | BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_SLEEP_IND); | |
952 | ||
953 | device_want_to_sleep(hu); | |
954 | ||
955 | kfree_skb(skb); | |
956 | return 0; | |
957 | } | |
958 | ||
959 | static int qca_ibs_wake_ind(struct hci_dev *hdev, struct sk_buff *skb) | |
960 | { | |
961 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
962 | ||
963 | BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_WAKE_IND); | |
964 | ||
965 | device_want_to_wakeup(hu); | |
966 | ||
967 | kfree_skb(skb); | |
968 | return 0; | |
969 | } | |
970 | ||
971 | static int qca_ibs_wake_ack(struct hci_dev *hdev, struct sk_buff *skb) | |
972 | { | |
973 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
974 | ||
975 | BT_DBG("hu %p recv hci ibs cmd 0x%x", hu, HCI_IBS_WAKE_ACK); | |
976 | ||
977 | device_woke_up(hu); | |
978 | ||
979 | kfree_skb(skb); | |
980 | return 0; | |
981 | } | |
982 | ||
c614ca3f BG |
983 | static int qca_recv_acl_data(struct hci_dev *hdev, struct sk_buff *skb) |
984 | { | |
985 | /* We receive debug logs from chip as an ACL packets. | |
986 | * Instead of sending the data to ACL to decode the | |
987 | * received data, we are pushing them to the above layers | |
988 | * as a diagnostic packet. | |
989 | */ | |
990 | if (get_unaligned_le16(skb->data) == QCA_DEBUG_HANDLE) | |
991 | return hci_recv_diag(hdev, skb); | |
992 | ||
993 | return hci_recv_frame(hdev, skb); | |
994 | } | |
995 | ||
06d3fdfc STA |
996 | static void qca_dmp_hdr(struct hci_dev *hdev, struct sk_buff *skb) |
997 | { | |
998 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
999 | struct qca_data *qca = hu->priv; | |
1000 | char buf[80]; | |
1001 | ||
1002 | snprintf(buf, sizeof(buf), "Controller Name: 0x%x\n", | |
1003 | qca->controller_id); | |
1004 | skb_put_data(skb, buf, strlen(buf)); | |
1005 | ||
1006 | snprintf(buf, sizeof(buf), "Firmware Version: 0x%x\n", | |
1007 | qca->fw_version); | |
1008 | skb_put_data(skb, buf, strlen(buf)); | |
1009 | ||
1010 | snprintf(buf, sizeof(buf), "Vendor:Qualcomm\n"); | |
1011 | skb_put_data(skb, buf, strlen(buf)); | |
1012 | ||
1013 | snprintf(buf, sizeof(buf), "Driver: %s\n", | |
1014 | hu->serdev->dev.driver->name); | |
1015 | skb_put_data(skb, buf, strlen(buf)); | |
1016 | } | |
1017 | ||
d841502c BG |
1018 | static void qca_controller_memdump(struct work_struct *work) |
1019 | { | |
1020 | struct qca_data *qca = container_of(work, struct qca_data, | |
1021 | ctrl_memdump_evt); | |
1022 | struct hci_uart *hu = qca->hu; | |
1023 | struct sk_buff *skb; | |
1024 | struct qca_memdump_event_hdr *cmd_hdr; | |
06d3fdfc | 1025 | struct qca_memdump_info *qca_memdump = qca->qca_memdump; |
d841502c | 1026 | struct qca_dump_size *dump; |
56b084ed | 1027 | u16 seq_no; |
e5aeebdd | 1028 | u32 rx_size; |
06d3fdfc | 1029 | int ret = 0; |
e5aeebdd | 1030 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
d841502c BG |
1031 | |
1032 | while ((skb = skb_dequeue(&qca->rx_memdump_q))) { | |
1033 | ||
7c2c3e63 | 1034 | mutex_lock(&qca->hci_memdump_lock); |
f98aa80f VLNG |
1035 | /* Skip processing the received packets if timeout detected |
1036 | * or memdump collection completed. | |
1037 | */ | |
1038 | if (qca->memdump_state == QCA_MEMDUMP_TIMEOUT || | |
1039 | qca->memdump_state == QCA_MEMDUMP_COLLECTED) { | |
7c2c3e63 VLNG |
1040 | mutex_unlock(&qca->hci_memdump_lock); |
1041 | return; | |
1042 | } | |
1043 | ||
d841502c | 1044 | if (!qca_memdump) { |
973dd9c4 | 1045 | qca_memdump = kzalloc(sizeof(*qca_memdump), GFP_ATOMIC); |
7c2c3e63 VLNG |
1046 | if (!qca_memdump) { |
1047 | mutex_unlock(&qca->hci_memdump_lock); | |
d841502c | 1048 | return; |
7c2c3e63 | 1049 | } |
d841502c BG |
1050 | |
1051 | qca->qca_memdump = qca_memdump; | |
1052 | } | |
1053 | ||
1054 | qca->memdump_state = QCA_MEMDUMP_COLLECTING; | |
1055 | cmd_hdr = (void *) skb->data; | |
d841502c BG |
1056 | seq_no = __le16_to_cpu(cmd_hdr->seq_no); |
1057 | skb_pull(skb, sizeof(struct qca_memdump_event_hdr)); | |
1058 | ||
1059 | if (!seq_no) { | |
1060 | ||
1061 | /* This is the first frame of memdump packet from | |
1062 | * the controller, Disable IBS to recevie dump | |
1063 | * with out any interruption, ideally time required for | |
1064 | * the controller to send the dump is 8 seconds. let us | |
1065 | * start timer to handle this asynchronous activity. | |
1066 | */ | |
2be43aba | 1067 | set_bit(QCA_IBS_DISABLED, &qca->flags); |
d841502c BG |
1068 | set_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); |
1069 | dump = (void *) skb->data; | |
06d3fdfc STA |
1070 | qca_memdump->ram_dump_size = __le32_to_cpu(dump->dump_size); |
1071 | if (!(qca_memdump->ram_dump_size)) { | |
d841502c | 1072 | bt_dev_err(hu->hdev, "Rx invalid memdump size"); |
71f8e707 | 1073 | kfree(qca_memdump); |
d841502c | 1074 | kfree_skb(skb); |
7c2c3e63 | 1075 | mutex_unlock(&qca->hci_memdump_lock); |
d841502c BG |
1076 | return; |
1077 | } | |
1078 | ||
7c2c3e63 VLNG |
1079 | queue_delayed_work(qca->workqueue, |
1080 | &qca->ctrl_memdump_timeout, | |
06d3fdfc STA |
1081 | msecs_to_jiffies(MEMDUMP_TIMEOUT_MS)); |
1082 | skb_pull(skb, sizeof(qca_memdump->ram_dump_size)); | |
1083 | qca_memdump->current_seq_no = 0; | |
1084 | qca_memdump->received_dump = 0; | |
1085 | ret = hci_devcd_init(hu->hdev, qca_memdump->ram_dump_size); | |
1086 | bt_dev_info(hu->hdev, "hci_devcd_init Return:%d", | |
1087 | ret); | |
1088 | if (ret < 0) { | |
1089 | kfree(qca->qca_memdump); | |
1090 | qca->qca_memdump = NULL; | |
1091 | qca->memdump_state = QCA_MEMDUMP_COLLECTED; | |
1092 | cancel_delayed_work(&qca->ctrl_memdump_timeout); | |
1093 | clear_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); | |
8ae22de9 | 1094 | clear_bit(QCA_IBS_DISABLED, &qca->flags); |
06d3fdfc STA |
1095 | mutex_unlock(&qca->hci_memdump_lock); |
1096 | return; | |
1097 | } | |
d841502c | 1098 | |
06d3fdfc STA |
1099 | bt_dev_info(hu->hdev, "QCA collecting dump of size:%u", |
1100 | qca_memdump->ram_dump_size); | |
1101 | ||
1102 | } | |
d841502c BG |
1103 | |
1104 | /* If sequence no 0 is missed then there is no point in | |
1105 | * accepting the other sequences. | |
1106 | */ | |
06d3fdfc | 1107 | if (!test_bit(QCA_MEMDUMP_COLLECTION, &qca->flags)) { |
d841502c BG |
1108 | bt_dev_err(hu->hdev, "QCA: Discarding other packets"); |
1109 | kfree(qca_memdump); | |
1110 | kfree_skb(skb); | |
7c2c3e63 | 1111 | mutex_unlock(&qca->hci_memdump_lock); |
d841502c BG |
1112 | return; |
1113 | } | |
d841502c BG |
1114 | /* There could be chance of missing some packets from |
1115 | * the controller. In such cases let us store the dummy | |
1116 | * packets in the buffer. | |
1117 | */ | |
e5aeebdd | 1118 | /* For QCA6390, controller does not lost packets but |
07528783 | 1119 | * sequence number field of packet sometimes has error |
e5aeebdd ZH |
1120 | * bits, so skip this checking for missing packet. |
1121 | */ | |
d841502c | 1122 | while ((seq_no > qca_memdump->current_seq_no + 1) && |
06d3fdfc STA |
1123 | (soc_type != QCA_QCA6390) && |
1124 | seq_no != QCA_LAST_SEQUENCE_NUM) { | |
d841502c BG |
1125 | bt_dev_err(hu->hdev, "QCA controller missed packet:%d", |
1126 | qca_memdump->current_seq_no); | |
e5aeebdd ZH |
1127 | rx_size = qca_memdump->received_dump; |
1128 | rx_size += QCA_DUMP_PACKET_SIZE; | |
1129 | if (rx_size > qca_memdump->ram_dump_size) { | |
1130 | bt_dev_err(hu->hdev, | |
1131 | "QCA memdump received %d, no space for missed packet", | |
1132 | qca_memdump->received_dump); | |
1133 | break; | |
1134 | } | |
06d3fdfc STA |
1135 | hci_devcd_append_pattern(hu->hdev, 0x00, |
1136 | QCA_DUMP_PACKET_SIZE); | |
d841502c BG |
1137 | qca_memdump->received_dump += QCA_DUMP_PACKET_SIZE; |
1138 | qca_memdump->current_seq_no++; | |
1139 | } | |
1140 | ||
06d3fdfc | 1141 | rx_size = qca_memdump->received_dump + skb->len; |
e5aeebdd ZH |
1142 | if (rx_size <= qca_memdump->ram_dump_size) { |
1143 | if ((seq_no != QCA_LAST_SEQUENCE_NUM) && | |
06d3fdfc | 1144 | (seq_no != qca_memdump->current_seq_no)) { |
e5aeebdd ZH |
1145 | bt_dev_err(hu->hdev, |
1146 | "QCA memdump unexpected packet %d", | |
1147 | seq_no); | |
06d3fdfc | 1148 | } |
e5aeebdd ZH |
1149 | bt_dev_dbg(hu->hdev, |
1150 | "QCA memdump packet %d with length %d", | |
1151 | seq_no, skb->len); | |
06d3fdfc STA |
1152 | hci_devcd_append(hu->hdev, skb); |
1153 | qca_memdump->current_seq_no += 1; | |
1154 | qca_memdump->received_dump = rx_size; | |
e5aeebdd ZH |
1155 | } else { |
1156 | bt_dev_err(hu->hdev, | |
06d3fdfc STA |
1157 | "QCA memdump received no space for packet %d", |
1158 | qca_memdump->current_seq_no); | |
e5aeebdd | 1159 | } |
06d3fdfc | 1160 | |
d841502c | 1161 | if (seq_no == QCA_LAST_SEQUENCE_NUM) { |
e5aeebdd | 1162 | bt_dev_info(hu->hdev, |
06d3fdfc STA |
1163 | "QCA memdump Done, received %d, total %d", |
1164 | qca_memdump->received_dump, | |
1165 | qca_memdump->ram_dump_size); | |
1166 | hci_devcd_complete(hu->hdev); | |
7c2c3e63 | 1167 | cancel_delayed_work(&qca->ctrl_memdump_timeout); |
d841502c BG |
1168 | kfree(qca->qca_memdump); |
1169 | qca->qca_memdump = NULL; | |
1170 | qca->memdump_state = QCA_MEMDUMP_COLLECTED; | |
7c2c3e63 | 1171 | clear_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); |
d841502c | 1172 | } |
7c2c3e63 VLNG |
1173 | |
1174 | mutex_unlock(&qca->hci_memdump_lock); | |
d841502c BG |
1175 | } |
1176 | ||
1177 | } | |
1178 | ||
7c2c3e63 VLNG |
1179 | static int qca_controller_memdump_event(struct hci_dev *hdev, |
1180 | struct sk_buff *skb) | |
d841502c BG |
1181 | { |
1182 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1183 | struct qca_data *qca = hu->priv; | |
1184 | ||
3344537f | 1185 | set_bit(QCA_SSR_TRIGGERED, &qca->flags); |
d841502c BG |
1186 | skb_queue_tail(&qca->rx_memdump_q, skb); |
1187 | queue_work(qca->workqueue, &qca->ctrl_memdump_evt); | |
1188 | ||
1189 | return 0; | |
1190 | } | |
1191 | ||
2faa3f15 MK |
1192 | static int qca_recv_event(struct hci_dev *hdev, struct sk_buff *skb) |
1193 | { | |
1194 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1195 | struct qca_data *qca = hu->priv; | |
1196 | ||
1197 | if (test_bit(QCA_DROP_VENDOR_EVENT, &qca->flags)) { | |
1198 | struct hci_event_hdr *hdr = (void *)skb->data; | |
1199 | ||
1200 | /* For the WCN3990 the vendor command for a baudrate change | |
1201 | * isn't sent as synchronous HCI command, because the | |
1202 | * controller sends the corresponding vendor event with the | |
1203 | * new baudrate. The event is received and properly decoded | |
1204 | * after changing the baudrate of the host port. It needs to | |
1205 | * be dropped, otherwise it can be misinterpreted as | |
1206 | * response to a later firmware download command (also a | |
1207 | * vendor command). | |
1208 | */ | |
1209 | ||
1210 | if (hdr->evt == HCI_EV_VENDOR) | |
1211 | complete(&qca->drop_ev_comp); | |
1212 | ||
4974c839 | 1213 | kfree_skb(skb); |
2faa3f15 MK |
1214 | |
1215 | return 0; | |
1216 | } | |
d841502c BG |
1217 | /* We receive chip memory dump as an event packet, With a dedicated |
1218 | * handler followed by a hardware error event. When this event is | |
1219 | * received we store dump into a file before closing hci. This | |
1220 | * dump will help in triaging the issues. | |
1221 | */ | |
1222 | if ((skb->data[0] == HCI_VENDOR_PKT) && | |
1223 | (get_unaligned_be16(skb->data + 2) == QCA_SSR_DUMP_HANDLE)) | |
1224 | return qca_controller_memdump_event(hdev, skb); | |
2faa3f15 MK |
1225 | |
1226 | return hci_recv_frame(hdev, skb); | |
1227 | } | |
1228 | ||
0ff252c1 BYTK |
1229 | #define QCA_IBS_SLEEP_IND_EVENT \ |
1230 | .type = HCI_IBS_SLEEP_IND, \ | |
1231 | .hlen = 0, \ | |
1232 | .loff = 0, \ | |
1233 | .lsize = 0, \ | |
1234 | .maxlen = HCI_MAX_IBS_SIZE | |
1235 | ||
1236 | #define QCA_IBS_WAKE_IND_EVENT \ | |
1237 | .type = HCI_IBS_WAKE_IND, \ | |
1238 | .hlen = 0, \ | |
1239 | .loff = 0, \ | |
1240 | .lsize = 0, \ | |
1241 | .maxlen = HCI_MAX_IBS_SIZE | |
1242 | ||
1243 | #define QCA_IBS_WAKE_ACK_EVENT \ | |
1244 | .type = HCI_IBS_WAKE_ACK, \ | |
1245 | .hlen = 0, \ | |
1246 | .loff = 0, \ | |
1247 | .lsize = 0, \ | |
1248 | .maxlen = HCI_MAX_IBS_SIZE | |
1249 | ||
1250 | static const struct h4_recv_pkt qca_recv_pkts[] = { | |
c614ca3f | 1251 | { H4_RECV_ACL, .recv = qca_recv_acl_data }, |
0ff252c1 | 1252 | { H4_RECV_SCO, .recv = hci_recv_frame }, |
2faa3f15 | 1253 | { H4_RECV_EVENT, .recv = qca_recv_event }, |
0ff252c1 BYTK |
1254 | { QCA_IBS_WAKE_IND_EVENT, .recv = qca_ibs_wake_ind }, |
1255 | { QCA_IBS_WAKE_ACK_EVENT, .recv = qca_ibs_wake_ack }, | |
1256 | { QCA_IBS_SLEEP_IND_EVENT, .recv = qca_ibs_sleep_ind }, | |
1257 | }; | |
1258 | ||
1259 | static int qca_recv(struct hci_uart *hu, const void *data, int count) | |
1260 | { | |
1261 | struct qca_data *qca = hu->priv; | |
1262 | ||
1263 | if (!test_bit(HCI_UART_REGISTERED, &hu->flags)) | |
1264 | return -EUNATCH; | |
1265 | ||
1266 | qca->rx_skb = h4_recv_buf(hu->hdev, qca->rx_skb, data, count, | |
1267 | qca_recv_pkts, ARRAY_SIZE(qca_recv_pkts)); | |
1268 | if (IS_ERR(qca->rx_skb)) { | |
1269 | int err = PTR_ERR(qca->rx_skb); | |
2064ee33 | 1270 | bt_dev_err(hu->hdev, "Frame reassembly failed (%d)", err); |
0ff252c1 BYTK |
1271 | qca->rx_skb = NULL; |
1272 | return err; | |
1273 | } | |
1274 | ||
1275 | return count; | |
1276 | } | |
1277 | ||
1278 | static struct sk_buff *qca_dequeue(struct hci_uart *hu) | |
1279 | { | |
1280 | struct qca_data *qca = hu->priv; | |
1281 | ||
1282 | return skb_dequeue(&qca->txq); | |
1283 | } | |
1284 | ||
1285 | static uint8_t qca_get_baudrate_value(int speed) | |
1286 | { | |
ce26d813 | 1287 | switch (speed) { |
0ff252c1 BYTK |
1288 | case 9600: |
1289 | return QCA_BAUDRATE_9600; | |
1290 | case 19200: | |
1291 | return QCA_BAUDRATE_19200; | |
1292 | case 38400: | |
1293 | return QCA_BAUDRATE_38400; | |
1294 | case 57600: | |
1295 | return QCA_BAUDRATE_57600; | |
1296 | case 115200: | |
1297 | return QCA_BAUDRATE_115200; | |
1298 | case 230400: | |
1299 | return QCA_BAUDRATE_230400; | |
1300 | case 460800: | |
1301 | return QCA_BAUDRATE_460800; | |
1302 | case 500000: | |
1303 | return QCA_BAUDRATE_500000; | |
1304 | case 921600: | |
1305 | return QCA_BAUDRATE_921600; | |
1306 | case 1000000: | |
1307 | return QCA_BAUDRATE_1000000; | |
1308 | case 2000000: | |
1309 | return QCA_BAUDRATE_2000000; | |
1310 | case 3000000: | |
1311 | return QCA_BAUDRATE_3000000; | |
be93a497 BG |
1312 | case 3200000: |
1313 | return QCA_BAUDRATE_3200000; | |
0ff252c1 BYTK |
1314 | case 3500000: |
1315 | return QCA_BAUDRATE_3500000; | |
1316 | default: | |
1317 | return QCA_BAUDRATE_115200; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | static int qca_set_baudrate(struct hci_dev *hdev, uint8_t baudrate) | |
1322 | { | |
1323 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1324 | struct qca_data *qca = hu->priv; | |
1325 | struct sk_buff *skb; | |
1326 | u8 cmd[] = { 0x01, 0x48, 0xFC, 0x01, 0x00 }; | |
1327 | ||
be93a497 | 1328 | if (baudrate > QCA_BAUDRATE_3200000) |
0ff252c1 BYTK |
1329 | return -EINVAL; |
1330 | ||
1331 | cmd[4] = baudrate; | |
1332 | ||
25a13e38 | 1333 | skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL); |
0ff252c1 | 1334 | if (!skb) { |
2064ee33 | 1335 | bt_dev_err(hdev, "Failed to allocate baudrate packet"); |
0ff252c1 BYTK |
1336 | return -ENOMEM; |
1337 | } | |
1338 | ||
1339 | /* Assign commands to change baudrate and packet type. */ | |
59ae1d12 | 1340 | skb_put_data(skb, cmd, sizeof(cmd)); |
618e8bc2 | 1341 | hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; |
0ff252c1 BYTK |
1342 | |
1343 | skb_queue_tail(&qca->txq, skb); | |
1344 | hci_uart_tx_wakeup(hu); | |
1345 | ||
94d66714 MK |
1346 | /* Wait for the baudrate change request to be sent */ |
1347 | ||
1348 | while (!skb_queue_empty(&qca->txq)) | |
1349 | usleep_range(100, 200); | |
1350 | ||
ecf2b768 MK |
1351 | if (hu->serdev) |
1352 | serdev_device_wait_until_sent(hu->serdev, | |
94d66714 MK |
1353 | msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS)); |
1354 | ||
1355 | /* Give the controller time to process the request */ | |
691d54d0 NA |
1356 | switch (qca_soc_type(hu)) { |
1357 | case QCA_WCN3988: | |
1358 | case QCA_WCN3990: | |
1359 | case QCA_WCN3991: | |
1360 | case QCA_WCN3998: | |
1361 | case QCA_WCN6750: | |
1362 | case QCA_WCN6855: | |
e0c1278a | 1363 | case QCA_WCN7850: |
99719449 | 1364 | usleep_range(1000, 10000); |
691d54d0 NA |
1365 | break; |
1366 | ||
1367 | default: | |
94d66714 | 1368 | msleep(300); |
691d54d0 | 1369 | } |
0ff252c1 BYTK |
1370 | |
1371 | return 0; | |
1372 | } | |
1373 | ||
05ba533c TE |
1374 | static inline void host_set_baudrate(struct hci_uart *hu, unsigned int speed) |
1375 | { | |
1376 | if (hu->serdev) | |
1377 | serdev_device_set_baudrate(hu->serdev, speed); | |
1378 | else | |
1379 | hci_uart_set_baudrate(hu, speed); | |
1380 | } | |
1381 | ||
9836b802 | 1382 | static int qca_send_power_pulse(struct hci_uart *hu, bool on) |
fa9ad876 | 1383 | { |
f9558270 | 1384 | int ret; |
94d66714 | 1385 | int timeout = msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS); |
9836b802 | 1386 | u8 cmd = on ? QCA_WCN3990_POWERON_PULSE : QCA_WCN3990_POWEROFF_PULSE; |
fa9ad876 BG |
1387 | |
1388 | /* These power pulses are single byte command which are sent | |
1389 | * at required baudrate to wcn3990. On wcn3990, we have an external | |
1390 | * circuit at Tx pin which decodes the pulse sent at specific baudrate. | |
1391 | * For example, wcn3990 supports RF COEX antenna for both Wi-Fi/BT | |
1392 | * and also we use the same power inputs to turn on and off for | |
1393 | * Wi-Fi/BT. Powering up the power sources will not enable BT, until | |
1394 | * we send a power on pulse at 115200 bps. This algorithm will help to | |
1395 | * save power. Disabling hardware flow control is mandatory while | |
1396 | * sending power pulses to SoC. | |
1397 | */ | |
f9558270 | 1398 | bt_dev_dbg(hu->hdev, "sending power pulse %02x to controller", cmd); |
fa9ad876 | 1399 | |
f9558270 | 1400 | serdev_device_write_flush(hu->serdev); |
fa9ad876 | 1401 | hci_uart_set_flow_control(hu, true); |
f9558270 BG |
1402 | ret = serdev_device_write_buf(hu->serdev, &cmd, sizeof(cmd)); |
1403 | if (ret < 0) { | |
1404 | bt_dev_err(hu->hdev, "failed to send power pulse %02x", cmd); | |
1405 | return ret; | |
1406 | } | |
fa9ad876 | 1407 | |
f9558270 | 1408 | serdev_device_wait_until_sent(hu->serdev, timeout); |
fa9ad876 BG |
1409 | hci_uart_set_flow_control(hu, false); |
1410 | ||
0ebcddd8 | 1411 | /* Give to controller time to boot/shutdown */ |
ad571d72 MK |
1412 | if (on) |
1413 | msleep(100); | |
0ebcddd8 | 1414 | else |
99719449 | 1415 | usleep_range(1000, 10000); |
ad571d72 | 1416 | |
fa9ad876 BG |
1417 | return 0; |
1418 | } | |
1419 | ||
83d9c5e5 BG |
1420 | static unsigned int qca_get_speed(struct hci_uart *hu, |
1421 | enum qca_speed_type speed_type) | |
1422 | { | |
1423 | unsigned int speed = 0; | |
1424 | ||
1425 | if (speed_type == QCA_INIT_SPEED) { | |
1426 | if (hu->init_speed) | |
1427 | speed = hu->init_speed; | |
1428 | else if (hu->proto->init_speed) | |
1429 | speed = hu->proto->init_speed; | |
1430 | } else { | |
1431 | if (hu->oper_speed) | |
1432 | speed = hu->oper_speed; | |
1433 | else if (hu->proto->oper_speed) | |
1434 | speed = hu->proto->oper_speed; | |
1435 | } | |
1436 | ||
1437 | return speed; | |
1438 | } | |
1439 | ||
1440 | static int qca_check_speeds(struct hci_uart *hu) | |
1441 | { | |
691d54d0 NA |
1442 | switch (qca_soc_type(hu)) { |
1443 | case QCA_WCN3988: | |
1444 | case QCA_WCN3990: | |
1445 | case QCA_WCN3991: | |
1446 | case QCA_WCN3998: | |
1447 | case QCA_WCN6750: | |
1448 | case QCA_WCN6855: | |
e0c1278a | 1449 | case QCA_WCN7850: |
fa9ad876 BG |
1450 | if (!qca_get_speed(hu, QCA_INIT_SPEED) && |
1451 | !qca_get_speed(hu, QCA_OPER_SPEED)) | |
1452 | return -EINVAL; | |
691d54d0 NA |
1453 | break; |
1454 | ||
1455 | default: | |
fa9ad876 BG |
1456 | if (!qca_get_speed(hu, QCA_INIT_SPEED) || |
1457 | !qca_get_speed(hu, QCA_OPER_SPEED)) | |
1458 | return -EINVAL; | |
1459 | } | |
83d9c5e5 BG |
1460 | |
1461 | return 0; | |
1462 | } | |
1463 | ||
1464 | static int qca_set_speed(struct hci_uart *hu, enum qca_speed_type speed_type) | |
1465 | { | |
1466 | unsigned int speed, qca_baudrate; | |
2faa3f15 | 1467 | struct qca_data *qca = hu->priv; |
78e8fa29 | 1468 | int ret = 0; |
83d9c5e5 BG |
1469 | |
1470 | if (speed_type == QCA_INIT_SPEED) { | |
1471 | speed = qca_get_speed(hu, QCA_INIT_SPEED); | |
1472 | if (speed) | |
1473 | host_set_baudrate(hu, speed); | |
1474 | } else { | |
4fdd5a4f MK |
1475 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
1476 | ||
83d9c5e5 BG |
1477 | speed = qca_get_speed(hu, QCA_OPER_SPEED); |
1478 | if (!speed) | |
1479 | return 0; | |
1480 | ||
78e8fa29 BG |
1481 | /* Disable flow control for wcn3990 to deassert RTS while |
1482 | * changing the baudrate of chip and host. | |
1483 | */ | |
691d54d0 NA |
1484 | switch (soc_type) { |
1485 | case QCA_WCN3988: | |
1486 | case QCA_WCN3990: | |
1487 | case QCA_WCN3991: | |
1488 | case QCA_WCN3998: | |
1489 | case QCA_WCN6750: | |
1490 | case QCA_WCN6855: | |
e0c1278a | 1491 | case QCA_WCN7850: |
78e8fa29 | 1492 | hci_uart_set_flow_control(hu, true); |
691d54d0 | 1493 | break; |
78e8fa29 | 1494 | |
691d54d0 NA |
1495 | default: |
1496 | break; | |
1497 | } | |
1498 | ||
1499 | switch (soc_type) { | |
1500 | case QCA_WCN3990: | |
2faa3f15 MK |
1501 | reinit_completion(&qca->drop_ev_comp); |
1502 | set_bit(QCA_DROP_VENDOR_EVENT, &qca->flags); | |
691d54d0 NA |
1503 | break; |
1504 | ||
1505 | default: | |
1506 | break; | |
2faa3f15 MK |
1507 | } |
1508 | ||
83d9c5e5 | 1509 | qca_baudrate = qca_get_baudrate_value(speed); |
fa9ad876 | 1510 | bt_dev_dbg(hu->hdev, "Set UART speed to %d", speed); |
83d9c5e5 BG |
1511 | ret = qca_set_baudrate(hu->hdev, qca_baudrate); |
1512 | if (ret) | |
78e8fa29 | 1513 | goto error; |
83d9c5e5 BG |
1514 | |
1515 | host_set_baudrate(hu, speed); | |
78e8fa29 BG |
1516 | |
1517 | error: | |
691d54d0 NA |
1518 | switch (soc_type) { |
1519 | case QCA_WCN3988: | |
1520 | case QCA_WCN3990: | |
1521 | case QCA_WCN3991: | |
1522 | case QCA_WCN3998: | |
1523 | case QCA_WCN6750: | |
1524 | case QCA_WCN6855: | |
e0c1278a | 1525 | case QCA_WCN7850: |
78e8fa29 | 1526 | hci_uart_set_flow_control(hu, false); |
691d54d0 | 1527 | break; |
2faa3f15 | 1528 | |
691d54d0 NA |
1529 | default: |
1530 | break; | |
1531 | } | |
1532 | ||
1533 | switch (soc_type) { | |
1534 | case QCA_WCN3990: | |
2faa3f15 MK |
1535 | /* Wait for the controller to send the vendor event |
1536 | * for the baudrate change command. | |
1537 | */ | |
1538 | if (!wait_for_completion_timeout(&qca->drop_ev_comp, | |
1539 | msecs_to_jiffies(100))) { | |
1540 | bt_dev_err(hu->hdev, | |
1541 | "Failed to change controller baudrate\n"); | |
1542 | ret = -ETIMEDOUT; | |
1543 | } | |
1544 | ||
1545 | clear_bit(QCA_DROP_VENDOR_EVENT, &qca->flags); | |
691d54d0 NA |
1546 | break; |
1547 | ||
1548 | default: | |
1549 | break; | |
2faa3f15 | 1550 | } |
83d9c5e5 BG |
1551 | } |
1552 | ||
78e8fa29 | 1553 | return ret; |
83d9c5e5 BG |
1554 | } |
1555 | ||
d841502c BG |
1556 | static int qca_send_crashbuffer(struct hci_uart *hu) |
1557 | { | |
1558 | struct qca_data *qca = hu->priv; | |
1559 | struct sk_buff *skb; | |
1560 | ||
1561 | skb = bt_skb_alloc(QCA_CRASHBYTE_PACKET_LEN, GFP_KERNEL); | |
1562 | if (!skb) { | |
1563 | bt_dev_err(hu->hdev, "Failed to allocate memory for skb packet"); | |
1564 | return -ENOMEM; | |
1565 | } | |
1566 | ||
1567 | /* We forcefully crash the controller, by sending 0xfb byte for | |
1568 | * 1024 times. We also might have chance of losing data, To be | |
1569 | * on safer side we send 1096 bytes to the SoC. | |
1570 | */ | |
1571 | memset(skb_put(skb, QCA_CRASHBYTE_PACKET_LEN), QCA_MEMDUMP_BYTE, | |
1572 | QCA_CRASHBYTE_PACKET_LEN); | |
1573 | hci_skb_pkt_type(skb) = HCI_COMMAND_PKT; | |
1574 | bt_dev_info(hu->hdev, "crash the soc to collect controller dump"); | |
1575 | skb_queue_tail(&qca->txq, skb); | |
1576 | hci_uart_tx_wakeup(hu); | |
1577 | ||
1578 | return 0; | |
1579 | } | |
1580 | ||
1581 | static void qca_wait_for_dump_collection(struct hci_dev *hdev) | |
1582 | { | |
1583 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1584 | struct qca_data *qca = hu->priv; | |
d841502c BG |
1585 | |
1586 | wait_on_bit_timeout(&qca->flags, QCA_MEMDUMP_COLLECTION, | |
1587 | TASK_UNINTERRUPTIBLE, MEMDUMP_TIMEOUT_MS); | |
1588 | ||
1589 | clear_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); | |
d841502c BG |
1590 | } |
1591 | ||
1592 | static void qca_hw_error(struct hci_dev *hdev, u8 code) | |
1593 | { | |
1594 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1595 | struct qca_data *qca = hu->priv; | |
1596 | ||
3344537f | 1597 | set_bit(QCA_SSR_TRIGGERED, &qca->flags); |
7c2c3e63 | 1598 | set_bit(QCA_HW_ERROR_EVENT, &qca->flags); |
d841502c BG |
1599 | bt_dev_info(hdev, "mem_dump_status: %d", qca->memdump_state); |
1600 | ||
1601 | if (qca->memdump_state == QCA_MEMDUMP_IDLE) { | |
1602 | /* If hardware error event received for other than QCA | |
1603 | * soc memory dump event, then we need to crash the SOC | |
1604 | * and wait here for 8 seconds to get the dump packets. | |
1605 | * This will block main thread to be on hold until we | |
1606 | * collect dump. | |
1607 | */ | |
1608 | set_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); | |
1609 | qca_send_crashbuffer(hu); | |
1610 | qca_wait_for_dump_collection(hdev); | |
1611 | } else if (qca->memdump_state == QCA_MEMDUMP_COLLECTING) { | |
1612 | /* Let us wait here until memory dump collected or | |
1613 | * memory dump timer expired. | |
1614 | */ | |
1615 | bt_dev_info(hdev, "waiting for dump to complete"); | |
1616 | qca_wait_for_dump_collection(hdev); | |
1617 | } | |
7c2c3e63 | 1618 | |
f98aa80f | 1619 | mutex_lock(&qca->hci_memdump_lock); |
7c2c3e63 VLNG |
1620 | if (qca->memdump_state != QCA_MEMDUMP_COLLECTED) { |
1621 | bt_dev_err(hu->hdev, "clearing allocated memory due to memdump timeout"); | |
06d3fdfc | 1622 | hci_devcd_abort(hu->hdev); |
f98aa80f | 1623 | if (qca->qca_memdump) { |
f98aa80f VLNG |
1624 | kfree(qca->qca_memdump); |
1625 | qca->qca_memdump = NULL; | |
1626 | } | |
7c2c3e63 VLNG |
1627 | qca->memdump_state = QCA_MEMDUMP_TIMEOUT; |
1628 | cancel_delayed_work(&qca->ctrl_memdump_timeout); | |
f98aa80f VLNG |
1629 | } |
1630 | mutex_unlock(&qca->hci_memdump_lock); | |
1631 | ||
1632 | if (qca->memdump_state == QCA_MEMDUMP_TIMEOUT || | |
1633 | qca->memdump_state == QCA_MEMDUMP_COLLECTED) { | |
7c2c3e63 | 1634 | cancel_work_sync(&qca->ctrl_memdump_evt); |
f98aa80f | 1635 | skb_queue_purge(&qca->rx_memdump_q); |
7c2c3e63 VLNG |
1636 | } |
1637 | ||
1638 | clear_bit(QCA_HW_ERROR_EVENT, &qca->flags); | |
d841502c BG |
1639 | } |
1640 | ||
1641 | static void qca_cmd_timeout(struct hci_dev *hdev) | |
1642 | { | |
1643 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1644 | struct qca_data *qca = hu->priv; | |
1645 | ||
3344537f VLNG |
1646 | set_bit(QCA_SSR_TRIGGERED, &qca->flags); |
1647 | if (qca->memdump_state == QCA_MEMDUMP_IDLE) { | |
1648 | set_bit(QCA_MEMDUMP_COLLECTION, &qca->flags); | |
d841502c | 1649 | qca_send_crashbuffer(hu); |
3344537f VLNG |
1650 | qca_wait_for_dump_collection(hdev); |
1651 | } else if (qca->memdump_state == QCA_MEMDUMP_COLLECTING) { | |
1652 | /* Let us wait here until memory dump collected or | |
1653 | * memory dump timer expired. | |
1654 | */ | |
1655 | bt_dev_info(hdev, "waiting for dump to complete"); | |
1656 | qca_wait_for_dump_collection(hdev); | |
1657 | } | |
1658 | ||
1659 | mutex_lock(&qca->hci_memdump_lock); | |
1660 | if (qca->memdump_state != QCA_MEMDUMP_COLLECTED) { | |
1661 | qca->memdump_state = QCA_MEMDUMP_TIMEOUT; | |
1662 | if (!test_bit(QCA_HW_ERROR_EVENT, &qca->flags)) { | |
1663 | /* Inject hw error event to reset the device | |
1664 | * and driver. | |
1665 | */ | |
1666 | hci_reset_dev(hu->hdev); | |
1667 | } | |
1668 | } | |
1669 | mutex_unlock(&qca->hci_memdump_lock); | |
d841502c BG |
1670 | } |
1671 | ||
4539ca67 | 1672 | static bool qca_wakeup(struct hci_dev *hdev) |
c1a74160 VLNG |
1673 | { |
1674 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1675 | bool wakeup; | |
1676 | ||
73e87c0a JH |
1677 | if (!hu->serdev) |
1678 | return true; | |
1679 | ||
03b0093f ZJ |
1680 | /* BT SoC attached through the serial bus is handled by the serdev driver. |
1681 | * So we need to use the device handle of the serdev driver to get the | |
1682 | * status of device may wakeup. | |
c1a74160 | 1683 | */ |
03b0093f | 1684 | wakeup = device_may_wakeup(&hu->serdev->ctrl->dev); |
c1a74160 VLNG |
1685 | bt_dev_dbg(hu->hdev, "wakeup status : %d", wakeup); |
1686 | ||
bde63e9e | 1687 | return wakeup; |
c1a74160 VLNG |
1688 | } |
1689 | ||
9a15ce68 BG |
1690 | static int qca_port_reopen(struct hci_uart *hu) |
1691 | { | |
1692 | int ret; | |
1693 | ||
1694 | /* Now the device is in ready state to communicate with host. | |
1695 | * To sync host with device we need to reopen port. | |
1696 | * Without this, we will have RTS and CTS synchronization | |
1697 | * issues. | |
1698 | */ | |
1699 | serdev_device_close(hu->serdev); | |
1700 | ret = serdev_device_open(hu->serdev); | |
1701 | if (ret) { | |
1702 | bt_dev_err(hu->hdev, "failed to open port"); | |
1703 | return ret; | |
1704 | } | |
1705 | ||
1706 | hci_uart_set_flow_control(hu, false); | |
1707 | ||
1708 | return 0; | |
1709 | } | |
1710 | ||
d8f97da1 | 1711 | static int qca_regulator_init(struct hci_uart *hu) |
fa9ad876 | 1712 | { |
d8f97da1 | 1713 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
3e4be65e | 1714 | struct qca_serdev *qcadev; |
fa9ad876 | 1715 | int ret; |
d8f97da1 | 1716 | bool sw_ctrl_state; |
fa9ad876 | 1717 | |
3e4be65e BG |
1718 | /* Check for vregs status, may be hci down has turned |
1719 | * off the voltage regulator. | |
1720 | */ | |
1721 | qcadev = serdev_device_get_drvdata(hu->serdev); | |
eba17187 | 1722 | |
3e4be65e BG |
1723 | if (!qcadev->bt_power->vregs_on) { |
1724 | serdev_device_close(hu->serdev); | |
a9314e76 | 1725 | ret = qca_regulator_enable(qcadev); |
3e4be65e BG |
1726 | if (ret) |
1727 | return ret; | |
1728 | ||
1729 | ret = serdev_device_open(hu->serdev); | |
1730 | if (ret) { | |
1731 | bt_dev_err(hu->hdev, "failed to open port"); | |
1732 | return ret; | |
1733 | } | |
1734 | } | |
1735 | ||
691d54d0 NA |
1736 | switch (soc_type) { |
1737 | case QCA_WCN3988: | |
1738 | case QCA_WCN3990: | |
1739 | case QCA_WCN3991: | |
1740 | case QCA_WCN3998: | |
d8f97da1 VLNG |
1741 | /* Forcefully enable wcn399x to enter in to boot mode. */ |
1742 | host_set_baudrate(hu, 2400); | |
1743 | ret = qca_send_power_pulse(hu, false); | |
1744 | if (ret) | |
1745 | return ret; | |
691d54d0 NA |
1746 | break; |
1747 | ||
1748 | default: | |
1749 | break; | |
d8f97da1 VLNG |
1750 | } |
1751 | ||
1752 | /* For wcn6750 need to enable gpio bt_en */ | |
1753 | if (qcadev->bt_en) { | |
1754 | gpiod_set_value_cansleep(qcadev->bt_en, 0); | |
1755 | msleep(50); | |
1756 | gpiod_set_value_cansleep(qcadev->bt_en, 1); | |
1757 | msleep(50); | |
1758 | if (qcadev->sw_ctrl) { | |
1759 | sw_ctrl_state = gpiod_get_value_cansleep(qcadev->sw_ctrl); | |
1760 | bt_dev_dbg(hu->hdev, "SW_CTRL is %d", sw_ctrl_state); | |
1761 | } | |
1762 | } | |
fa9ad876 BG |
1763 | |
1764 | qca_set_speed(hu, QCA_INIT_SPEED); | |
d8f97da1 | 1765 | |
691d54d0 NA |
1766 | switch (soc_type) { |
1767 | case QCA_WCN3988: | |
1768 | case QCA_WCN3990: | |
1769 | case QCA_WCN3991: | |
1770 | case QCA_WCN3998: | |
d8f97da1 VLNG |
1771 | ret = qca_send_power_pulse(hu, true); |
1772 | if (ret) | |
1773 | return ret; | |
691d54d0 NA |
1774 | break; |
1775 | ||
1776 | default: | |
1777 | break; | |
d8f97da1 | 1778 | } |
fa9ad876 | 1779 | |
9a15ce68 | 1780 | return qca_port_reopen(hu); |
fa9ad876 BG |
1781 | } |
1782 | ||
5e6d8401 RL |
1783 | static int qca_power_on(struct hci_dev *hdev) |
1784 | { | |
1785 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
1786 | enum qca_btsoc_type soc_type = qca_soc_type(hu); | |
1787 | struct qca_serdev *qcadev; | |
2be43aba | 1788 | struct qca_data *qca = hu->priv; |
5e6d8401 RL |
1789 | int ret = 0; |
1790 | ||
1791 | /* Non-serdev device usually is powered by external power | |
1792 | * and don't need additional action in driver for power on | |
1793 | */ | |
1794 | if (!hu->serdev) | |
1795 | return 0; | |
1796 | ||
691d54d0 NA |
1797 | switch (soc_type) { |
1798 | case QCA_WCN3988: | |
1799 | case QCA_WCN3990: | |
1800 | case QCA_WCN3991: | |
1801 | case QCA_WCN3998: | |
1802 | case QCA_WCN6750: | |
1803 | case QCA_WCN6855: | |
e0c1278a | 1804 | case QCA_WCN7850: |
9a15ce68 | 1805 | case QCA_QCA6390: |
eba17187 | 1806 | ret = qca_regulator_init(hu); |
9a15ce68 BG |
1807 | break; |
1808 | ||
691d54d0 | 1809 | default: |
5e6d8401 | 1810 | qcadev = serdev_device_get_drvdata(hu->serdev); |
77131dfe | 1811 | if (qcadev->bt_en) { |
8a208b24 RL |
1812 | gpiod_set_value_cansleep(qcadev->bt_en, 1); |
1813 | /* Controller needs time to bootup. */ | |
1814 | msleep(150); | |
1815 | } | |
5e6d8401 RL |
1816 | } |
1817 | ||
2be43aba | 1818 | clear_bit(QCA_BT_OFF, &qca->flags); |
5e6d8401 RL |
1819 | return ret; |
1820 | } | |
1821 | ||
06d3fdfc STA |
1822 | static void hci_coredump_qca(struct hci_dev *hdev) |
1823 | { | |
6abf9dd2 | 1824 | int err; |
06d3fdfc | 1825 | static const u8 param[] = { 0x26 }; |
06d3fdfc | 1826 | |
6abf9dd2 ZH |
1827 | err = __hci_cmd_send(hdev, 0xfc0c, 1, param); |
1828 | if (err < 0) | |
1829 | bt_dev_err(hdev, "%s: trigger crash failed (%d)", __func__, err); | |
06d3fdfc STA |
1830 | } |
1831 | ||
ca6d2adf ZH |
1832 | static int qca_get_data_path_id(struct hci_dev *hdev, __u8 *data_path_id) |
1833 | { | |
1834 | /* QCA uses 1 as non-HCI data path id for HFP */ | |
1835 | *data_path_id = 1; | |
1836 | return 0; | |
1837 | } | |
1838 | ||
1839 | static int qca_configure_hfp_offload(struct hci_dev *hdev) | |
1840 | { | |
1841 | bt_dev_info(hdev, "HFP non-HCI data transport is supported"); | |
1842 | hdev->get_data_path_id = qca_get_data_path_id; | |
1843 | /* Do not need to send HCI_Configure_Data_Path to configure non-HCI | |
1844 | * data transport path for QCA controllers, so set below field as NULL. | |
1845 | */ | |
1846 | hdev->get_codec_config_data = NULL; | |
1847 | return 0; | |
1848 | } | |
1849 | ||
0ff252c1 BYTK |
1850 | static int qca_setup(struct hci_uart *hu) |
1851 | { | |
1852 | struct hci_dev *hdev = hu->hdev; | |
1853 | struct qca_data *qca = hu->priv; | |
1854 | unsigned int speed, qca_baudrate = QCA_BAUDRATE_115200; | |
bb2500ab | 1855 | unsigned int retries = 0; |
4fdd5a4f | 1856 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
99c905c6 | 1857 | const char *firmware_name = qca_get_firmware_name(hu); |
0ff252c1 | 1858 | int ret; |
059924fd | 1859 | struct qca_btsoc_version ver; |
77f45cca | 1860 | struct qca_serdev *qcadev; |
691d54d0 | 1861 | const char *soc_name; |
0ff252c1 | 1862 | |
83d9c5e5 BG |
1863 | ret = qca_check_speeds(hu); |
1864 | if (ret) | |
1865 | return ret; | |
1866 | ||
55c0bd77 | 1867 | clear_bit(QCA_ROM_FW, &qca->flags); |
0ff252c1 | 1868 | /* Patch downloading has to be done without IBS mode */ |
2be43aba | 1869 | set_bit(QCA_IBS_DISABLED, &qca->flags); |
0ff252c1 | 1870 | |
e14c167a RL |
1871 | /* Enable controller to do both LE scan and BR/EDR inquiry |
1872 | * simultaneously. | |
1873 | */ | |
1874 | set_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks); | |
1875 | ||
691d54d0 | 1876 | switch (soc_type) { |
a7f8dedb TJ |
1877 | case QCA_QCA2066: |
1878 | soc_name = "qca2066"; | |
1879 | break; | |
1880 | ||
691d54d0 NA |
1881 | case QCA_WCN3988: |
1882 | case QCA_WCN3990: | |
1883 | case QCA_WCN3991: | |
1884 | case QCA_WCN3998: | |
1885 | soc_name = "wcn399x"; | |
1886 | break; | |
1887 | ||
1888 | case QCA_WCN6750: | |
1889 | soc_name = "wcn6750"; | |
1890 | break; | |
1891 | ||
1892 | case QCA_WCN6855: | |
1893 | soc_name = "wcn6855"; | |
1894 | break; | |
1895 | ||
e0c1278a NA |
1896 | case QCA_WCN7850: |
1897 | soc_name = "wcn7850"; | |
1898 | break; | |
1899 | ||
691d54d0 NA |
1900 | default: |
1901 | soc_name = "ROME/QCA6390"; | |
1902 | } | |
1903 | bt_dev_info(hdev, "setting up %s", soc_name); | |
3e4be65e | 1904 | |
58789a19 VLNG |
1905 | qca->memdump_state = QCA_MEMDUMP_IDLE; |
1906 | ||
bb2500ab | 1907 | retry: |
5e6d8401 RL |
1908 | ret = qca_power_on(hdev); |
1909 | if (ret) | |
9e80587a | 1910 | goto out; |
5e6d8401 | 1911 | |
3344537f VLNG |
1912 | clear_bit(QCA_SSR_TRIGGERED, &qca->flags); |
1913 | ||
691d54d0 NA |
1914 | switch (soc_type) { |
1915 | case QCA_WCN3988: | |
1916 | case QCA_WCN3990: | |
1917 | case QCA_WCN3991: | |
1918 | case QCA_WCN3998: | |
1919 | case QCA_WCN6750: | |
1920 | case QCA_WCN6855: | |
e0c1278a | 1921 | case QCA_WCN7850: |
77f45cca JH |
1922 | qcadev = serdev_device_get_drvdata(hu->serdev); |
1923 | if (qcadev->bdaddr_property_broken) | |
1924 | set_bit(HCI_QUIRK_BDADDR_PROPERTY_BROKEN, &hdev->quirks); | |
1925 | ||
34af56e8 | 1926 | hci_set_aosp_capable(hdev); |
fa9ad876 | 1927 | |
059924fd | 1928 | ret = qca_read_soc_version(hdev, &ver, soc_type); |
fa9ad876 | 1929 | if (ret) |
9e80587a | 1930 | goto out; |
691d54d0 NA |
1931 | break; |
1932 | ||
1933 | default: | |
fa9ad876 BG |
1934 | qca_set_speed(hu, QCA_INIT_SPEED); |
1935 | } | |
0ff252c1 BYTK |
1936 | |
1937 | /* Setup user speed if needed */ | |
83d9c5e5 | 1938 | speed = qca_get_speed(hu, QCA_OPER_SPEED); |
0ff252c1 | 1939 | if (speed) { |
83d9c5e5 BG |
1940 | ret = qca_set_speed(hu, QCA_OPER_SPEED); |
1941 | if (ret) | |
9e80587a | 1942 | goto out; |
83d9c5e5 BG |
1943 | |
1944 | qca_baudrate = qca_get_baudrate_value(speed); | |
0ff252c1 BYTK |
1945 | } |
1946 | ||
691d54d0 NA |
1947 | switch (soc_type) { |
1948 | case QCA_WCN3988: | |
1949 | case QCA_WCN3990: | |
1950 | case QCA_WCN3991: | |
1951 | case QCA_WCN3998: | |
1952 | case QCA_WCN6750: | |
1953 | case QCA_WCN6855: | |
e0c1278a | 1954 | case QCA_WCN7850: |
691d54d0 NA |
1955 | break; |
1956 | ||
1957 | default: | |
fa9ad876 | 1958 | /* Get QCA version information */ |
059924fd | 1959 | ret = qca_read_soc_version(hdev, &ver, soc_type); |
fa9ad876 | 1960 | if (ret) |
9e80587a | 1961 | goto out; |
fa9ad876 | 1962 | } |
aadebac4 | 1963 | |
0ff252c1 | 1964 | /* Setup patch / NVM configurations */ |
059924fd | 1965 | ret = qca_uart_setup(hdev, qca_baudrate, soc_type, ver, |
99c905c6 | 1966 | firmware_name); |
0ff252c1 | 1967 | if (!ret) { |
2be43aba | 1968 | clear_bit(QCA_IBS_DISABLED, &qca->flags); |
0ff252c1 | 1969 | qca_debugfs_init(hdev); |
d841502c BG |
1970 | hu->hdev->hw_error = qca_hw_error; |
1971 | hu->hdev->cmd_timeout = qca_cmd_timeout; | |
7ddb9de6 JH |
1972 | if (hu->serdev) { |
1973 | if (device_can_wakeup(hu->serdev->ctrl->dev.parent)) | |
1974 | hu->hdev->wakeup = qca_wakeup; | |
1975 | } | |
ba8f3597 LP |
1976 | } else if (ret == -ENOENT) { |
1977 | /* No patch/nvm-config found, run with original fw/config */ | |
55c0bd77 | 1978 | set_bit(QCA_ROM_FW, &qca->flags); |
ba8f3597 | 1979 | ret = 0; |
7dc5fe08 AP |
1980 | } else if (ret == -EAGAIN) { |
1981 | /* | |
1982 | * Userspace firmware loader will return -EAGAIN in case no | |
1983 | * patch/nvm-config is found, so run with original fw/config. | |
1984 | */ | |
55c0bd77 | 1985 | set_bit(QCA_ROM_FW, &qca->flags); |
7dc5fe08 | 1986 | ret = 0; |
9e80587a BG |
1987 | } |
1988 | ||
1989 | out: | |
1990 | if (ret && retries < MAX_INIT_RETRIES) { | |
1991 | bt_dev_warn(hdev, "Retry BT power ON:%d", retries); | |
1992 | qca_power_shutdown(hu); | |
1993 | if (hu->serdev) { | |
1994 | serdev_device_close(hu->serdev); | |
1995 | ret = serdev_device_open(hu->serdev); | |
1996 | if (ret) { | |
1997 | bt_dev_err(hdev, "failed to open port"); | |
1998 | return ret; | |
bb2500ab | 1999 | } |
bb2500ab | 2000 | } |
9e80587a BG |
2001 | retries++; |
2002 | goto retry; | |
0ff252c1 BYTK |
2003 | } |
2004 | ||
2005 | /* Setup bdaddr */ | |
e5d6468f | 2006 | if (soc_type == QCA_ROME) |
5c0a1001 | 2007 | hu->hdev->set_bdaddr = qca_set_bdaddr_rome; |
e5d6468f RL |
2008 | else |
2009 | hu->hdev->set_bdaddr = qca_set_bdaddr; | |
ca6d2adf ZH |
2010 | |
2011 | if (soc_type == QCA_QCA2066) | |
2012 | qca_configure_hfp_offload(hdev); | |
2013 | ||
06d3fdfc STA |
2014 | qca->fw_version = le16_to_cpu(ver.patch_ver); |
2015 | qca->controller_id = le16_to_cpu(ver.rom_ver); | |
2016 | hci_devcd_register(hdev, hci_coredump_qca, qca_dmp_hdr, NULL); | |
0ff252c1 BYTK |
2017 | |
2018 | return ret; | |
2019 | } | |
2020 | ||
2edc9c5c | 2021 | static const struct hci_uart_proto qca_proto = { |
0ff252c1 BYTK |
2022 | .id = HCI_UART_QCA, |
2023 | .name = "QCA", | |
aee61f7a | 2024 | .manufacturer = 29, |
0ff252c1 BYTK |
2025 | .init_speed = 115200, |
2026 | .oper_speed = 3000000, | |
2027 | .open = qca_open, | |
2028 | .close = qca_close, | |
2029 | .flush = qca_flush, | |
2030 | .setup = qca_setup, | |
2031 | .recv = qca_recv, | |
2032 | .enqueue = qca_enqueue, | |
2033 | .dequeue = qca_dequeue, | |
2034 | }; | |
2035 | ||
f904feef LW |
2036 | static const struct qca_device_data qca_soc_data_wcn3988 __maybe_unused = { |
2037 | .soc_type = QCA_WCN3988, | |
2038 | .vregs = (struct qca_vreg []) { | |
2039 | { "vddio", 15000 }, | |
2040 | { "vddxo", 80000 }, | |
2041 | { "vddrf", 300000 }, | |
2042 | { "vddch0", 450000 }, | |
2043 | }, | |
2044 | .num_vregs = 4, | |
2045 | }; | |
2046 | ||
44fac8a2 | 2047 | static const struct qca_device_data qca_soc_data_wcn3990 __maybe_unused = { |
fa9ad876 BG |
2048 | .soc_type = QCA_WCN3990, |
2049 | .vregs = (struct qca_vreg []) { | |
f2edd66e BA |
2050 | { "vddio", 15000 }, |
2051 | { "vddxo", 80000 }, | |
2052 | { "vddrf", 300000 }, | |
2053 | { "vddch0", 450000 }, | |
fa9ad876 BG |
2054 | }, |
2055 | .num_vregs = 4, | |
2056 | }; | |
2057 | ||
44fac8a2 | 2058 | static const struct qca_device_data qca_soc_data_wcn3991 __maybe_unused = { |
7d250a06 BG |
2059 | .soc_type = QCA_WCN3991, |
2060 | .vregs = (struct qca_vreg []) { | |
2061 | { "vddio", 15000 }, | |
2062 | { "vddxo", 80000 }, | |
2063 | { "vddrf", 300000 }, | |
2064 | { "vddch0", 450000 }, | |
2065 | }, | |
2066 | .num_vregs = 4, | |
54780138 | 2067 | .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES, |
7d250a06 BG |
2068 | }; |
2069 | ||
44fac8a2 | 2070 | static const struct qca_device_data qca_soc_data_wcn3998 __maybe_unused = { |
523760b7 HB |
2071 | .soc_type = QCA_WCN3998, |
2072 | .vregs = (struct qca_vreg []) { | |
f2edd66e BA |
2073 | { "vddio", 10000 }, |
2074 | { "vddxo", 80000 }, | |
2075 | { "vddrf", 300000 }, | |
2076 | { "vddch0", 450000 }, | |
523760b7 HB |
2077 | }, |
2078 | .num_vregs = 4, | |
2079 | }; | |
2080 | ||
a7f8dedb TJ |
2081 | static const struct qca_device_data qca_soc_data_qca2066 __maybe_unused = { |
2082 | .soc_type = QCA_QCA2066, | |
2083 | .num_vregs = 0, | |
5d192b69 | 2084 | .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES, |
a7f8dedb TJ |
2085 | }; |
2086 | ||
44fac8a2 | 2087 | static const struct qca_device_data qca_soc_data_qca6390 __maybe_unused = { |
e5d6468f RL |
2088 | .soc_type = QCA_QCA6390, |
2089 | .num_vregs = 0, | |
2090 | }; | |
2091 | ||
44fac8a2 | 2092 | static const struct qca_device_data qca_soc_data_wcn6750 __maybe_unused = { |
d8f97da1 VLNG |
2093 | .soc_type = QCA_WCN6750, |
2094 | .vregs = (struct qca_vreg []) { | |
2095 | { "vddio", 5000 }, | |
2096 | { "vddaon", 26000 }, | |
2097 | { "vddbtcxmx", 126000 }, | |
2098 | { "vddrfacmn", 12500 }, | |
2099 | { "vddrfa0p8", 102000 }, | |
2100 | { "vddrfa1p7", 302000 }, | |
2101 | { "vddrfa1p2", 257000 }, | |
2102 | { "vddrfa2p2", 1700000 }, | |
2103 | { "vddasd", 200 }, | |
2104 | }, | |
2105 | .num_vregs = 9, | |
2106 | .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES, | |
2107 | }; | |
2108 | ||
0811ff48 | 2109 | static const struct qca_device_data qca_soc_data_wcn6855 __maybe_unused = { |
095327fe SK |
2110 | .soc_type = QCA_WCN6855, |
2111 | .vregs = (struct qca_vreg []) { | |
2112 | { "vddio", 5000 }, | |
2113 | { "vddbtcxmx", 126000 }, | |
2114 | { "vddrfacmn", 12500 }, | |
2115 | { "vddrfa0p8", 102000 }, | |
2116 | { "vddrfa1p7", 302000 }, | |
2117 | { "vddrfa1p2", 257000 }, | |
2118 | }, | |
2119 | .num_vregs = 6, | |
2120 | .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES, | |
2121 | }; | |
2122 | ||
e0c1278a NA |
2123 | static const struct qca_device_data qca_soc_data_wcn7850 __maybe_unused = { |
2124 | .soc_type = QCA_WCN7850, | |
2125 | .vregs = (struct qca_vreg []) { | |
2126 | { "vddio", 5000 }, | |
2127 | { "vddaon", 26000 }, | |
2128 | { "vdddig", 126000 }, | |
2129 | { "vddrfa0p8", 102000 }, | |
2130 | { "vddrfa1p2", 257000 }, | |
2131 | { "vddrfa1p9", 302000 }, | |
2132 | }, | |
2133 | .num_vregs = 6, | |
2134 | .capabilities = QCA_CAP_WIDEBAND_SPEECH | QCA_CAP_VALID_LE_STATES, | |
2135 | }; | |
2136 | ||
c2d78273 | 2137 | static void qca_power_shutdown(struct hci_uart *hu) |
fa9ad876 | 2138 | { |
a9314e76 | 2139 | struct qca_serdev *qcadev; |
035a960e BG |
2140 | struct qca_data *qca = hu->priv; |
2141 | unsigned long flags; | |
5559904c | 2142 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
d8f97da1 | 2143 | bool sw_ctrl_state; |
eba17187 | 2144 | struct qca_power *power; |
035a960e BG |
2145 | |
2146 | /* From this point we go into power off state. But serial port is | |
2147 | * still open, stop queueing the IBS data and flush all the buffered | |
2148 | * data in skb's. | |
2149 | */ | |
2150 | spin_lock_irqsave(&qca->hci_ibs_lock, flags); | |
2be43aba | 2151 | set_bit(QCA_IBS_DISABLED, &qca->flags); |
035a960e BG |
2152 | qca_flush(hu); |
2153 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
2154 | ||
5559904c RL |
2155 | /* Non-serdev device usually is powered by external power |
2156 | * and don't need additional action in driver for power down | |
2157 | */ | |
2158 | if (!hu->serdev) | |
2159 | return; | |
2160 | ||
59f90f13 | 2161 | qcadev = serdev_device_get_drvdata(hu->serdev); |
eba17187 BG |
2162 | power = qcadev->bt_power; |
2163 | ||
e1d28be2 | 2164 | if (power && power->pwrseq) { |
eba17187 BG |
2165 | pwrseq_power_off(power->pwrseq); |
2166 | set_bit(QCA_BT_OFF, &qca->flags); | |
2167 | return; | |
2168 | } | |
59f90f13 | 2169 | |
691d54d0 NA |
2170 | switch (soc_type) { |
2171 | case QCA_WCN3988: | |
2172 | case QCA_WCN3990: | |
2173 | case QCA_WCN3991: | |
2174 | case QCA_WCN3998: | |
5559904c RL |
2175 | host_set_baudrate(hu, 2400); |
2176 | qca_send_power_pulse(hu, false); | |
2177 | qca_regulator_disable(qcadev); | |
691d54d0 NA |
2178 | break; |
2179 | ||
2180 | case QCA_WCN6750: | |
2181 | case QCA_WCN6855: | |
d8f97da1 VLNG |
2182 | gpiod_set_value_cansleep(qcadev->bt_en, 0); |
2183 | msleep(100); | |
2184 | qca_regulator_disable(qcadev); | |
2185 | if (qcadev->sw_ctrl) { | |
2186 | sw_ctrl_state = gpiod_get_value_cansleep(qcadev->sw_ctrl); | |
2187 | bt_dev_dbg(hu->hdev, "SW_CTRL is %d", sw_ctrl_state); | |
2188 | } | |
691d54d0 NA |
2189 | break; |
2190 | ||
2191 | default: | |
5559904c RL |
2192 | gpiod_set_value_cansleep(qcadev->bt_en, 0); |
2193 | } | |
2be43aba VLNG |
2194 | |
2195 | set_bit(QCA_BT_OFF, &qca->flags); | |
fa9ad876 BG |
2196 | } |
2197 | ||
3e4be65e BG |
2198 | static int qca_power_off(struct hci_dev *hdev) |
2199 | { | |
2200 | struct hci_uart *hu = hci_get_drvdata(hdev); | |
d841502c | 2201 | struct qca_data *qca = hu->priv; |
4f9ed5bd | 2202 | enum qca_btsoc_type soc_type = qca_soc_type(hu); |
3e4be65e | 2203 | |
58789a19 VLNG |
2204 | hu->hdev->hw_error = NULL; |
2205 | hu->hdev->cmd_timeout = NULL; | |
2206 | ||
df1e5c51 PH |
2207 | del_timer_sync(&qca->wake_retrans_timer); |
2208 | del_timer_sync(&qca->tx_idle_timer); | |
2209 | ||
d841502c | 2210 | /* Stop sending shutdown command if soc crashes. */ |
e5d6468f | 2211 | if (soc_type != QCA_ROME |
4f9ed5bd | 2212 | && qca->memdump_state == QCA_MEMDUMP_IDLE) { |
d841502c BG |
2213 | qca_send_pre_shutdown_cmd(hdev); |
2214 | usleep_range(8000, 10000); | |
2215 | } | |
010376ab | 2216 | |
3e4be65e BG |
2217 | qca_power_shutdown(hu); |
2218 | return 0; | |
2219 | } | |
2220 | ||
a9314e76 | 2221 | static int qca_regulator_enable(struct qca_serdev *qcadev) |
fa9ad876 | 2222 | { |
a9314e76 BA |
2223 | struct qca_power *power = qcadev->bt_power; |
2224 | int ret; | |
fa9ad876 | 2225 | |
eba17187 BG |
2226 | if (power->pwrseq) |
2227 | return pwrseq_power_on(power->pwrseq); | |
2228 | ||
a9314e76 BA |
2229 | /* Already enabled */ |
2230 | if (power->vregs_on) | |
2231 | return 0; | |
fa9ad876 | 2232 | |
a9314e76 | 2233 | BT_DBG("enabling %d regulators)", power->num_vregs); |
fa9ad876 | 2234 | |
a9314e76 BA |
2235 | ret = regulator_bulk_enable(power->num_vregs, power->vreg_bulk); |
2236 | if (ret) | |
2237 | return ret; | |
fa9ad876 | 2238 | |
a9314e76 | 2239 | power->vregs_on = true; |
fa9ad876 | 2240 | |
66cb7051 | 2241 | ret = clk_prepare_enable(qcadev->susclk); |
f3d63f50 | 2242 | if (ret) |
66cb7051 | 2243 | qca_regulator_disable(qcadev); |
66cb7051 | 2244 | |
f3d63f50 | 2245 | return ret; |
fa9ad876 BG |
2246 | } |
2247 | ||
a9314e76 BA |
2248 | static void qca_regulator_disable(struct qca_serdev *qcadev) |
2249 | { | |
2250 | struct qca_power *power; | |
2251 | ||
2252 | if (!qcadev) | |
2253 | return; | |
2254 | ||
2255 | power = qcadev->bt_power; | |
2256 | ||
2257 | /* Already disabled? */ | |
2258 | if (!power->vregs_on) | |
2259 | return; | |
2260 | ||
2261 | regulator_bulk_disable(power->num_vregs, power->vreg_bulk); | |
2262 | power->vregs_on = false; | |
66cb7051 | 2263 | |
f3d63f50 | 2264 | clk_disable_unprepare(qcadev->susclk); |
a9314e76 BA |
2265 | } |
2266 | ||
fa9ad876 BG |
2267 | static int qca_init_regulators(struct qca_power *qca, |
2268 | const struct qca_vreg *vregs, size_t num_vregs) | |
2269 | { | |
c29ff107 BA |
2270 | struct regulator_bulk_data *bulk; |
2271 | int ret; | |
fa9ad876 BG |
2272 | int i; |
2273 | ||
c29ff107 BA |
2274 | bulk = devm_kcalloc(qca->dev, num_vregs, sizeof(*bulk), GFP_KERNEL); |
2275 | if (!bulk) | |
fa9ad876 BG |
2276 | return -ENOMEM; |
2277 | ||
2278 | for (i = 0; i < num_vregs; i++) | |
c29ff107 BA |
2279 | bulk[i].supply = vregs[i].name; |
2280 | ||
2281 | ret = devm_regulator_bulk_get(qca->dev, num_vregs, bulk); | |
2282 | if (ret < 0) | |
2283 | return ret; | |
fa9ad876 | 2284 | |
c29ff107 BA |
2285 | for (i = 0; i < num_vregs; i++) { |
2286 | ret = regulator_set_load(bulk[i].consumer, vregs[i].load_uA); | |
2287 | if (ret) | |
2288 | return ret; | |
2289 | } | |
2290 | ||
2291 | qca->vreg_bulk = bulk; | |
163d42fa | 2292 | qca->num_vregs = num_vregs; |
c29ff107 BA |
2293 | |
2294 | return 0; | |
fa9ad876 BG |
2295 | } |
2296 | ||
b80f4e3b BG |
2297 | static void qca_clk_disable_unprepare(void *data) |
2298 | { | |
2299 | struct clk *clk = data; | |
2300 | ||
2301 | clk_disable_unprepare(clk); | |
2302 | } | |
2303 | ||
05ba533c TE |
2304 | static int qca_serdev_probe(struct serdev_device *serdev) |
2305 | { | |
2306 | struct qca_serdev *qcadev; | |
ae563183 | 2307 | struct hci_dev *hdev; |
a228f7a4 | 2308 | const struct qca_device_data *data; |
05ba533c | 2309 | int err; |
8a208b24 | 2310 | bool power_ctrl_enabled = true; |
05ba533c TE |
2311 | |
2312 | qcadev = devm_kzalloc(&serdev->dev, sizeof(*qcadev), GFP_KERNEL); | |
2313 | if (!qcadev) | |
2314 | return -ENOMEM; | |
2315 | ||
2316 | qcadev->serdev_hu.serdev = serdev; | |
9f3565b8 | 2317 | data = device_get_match_data(&serdev->dev); |
05ba533c | 2318 | serdev_device_set_drvdata(serdev, qcadev); |
99c905c6 RL |
2319 | device_property_read_string(&serdev->dev, "firmware-name", |
2320 | &qcadev->firmware_name); | |
37aee136 CH |
2321 | device_property_read_u32(&serdev->dev, "max-speed", |
2322 | &qcadev->oper_speed); | |
2323 | if (!qcadev->oper_speed) | |
2324 | BT_DBG("UART will pick default operating speed"); | |
2325 | ||
77f45cca JH |
2326 | qcadev->bdaddr_property_broken = device_property_read_bool(&serdev->dev, |
2327 | "qcom,local-bd-address-broken"); | |
2328 | ||
691d54d0 | 2329 | if (data) |
523760b7 | 2330 | qcadev->btsoc_type = data->soc_type; |
691d54d0 NA |
2331 | else |
2332 | qcadev->btsoc_type = QCA_ROME; | |
2333 | ||
2334 | switch (qcadev->btsoc_type) { | |
2335 | case QCA_WCN3988: | |
2336 | case QCA_WCN3990: | |
2337 | case QCA_WCN3991: | |
2338 | case QCA_WCN3998: | |
2339 | case QCA_WCN6750: | |
2340 | case QCA_WCN6855: | |
e0c1278a | 2341 | case QCA_WCN7850: |
9a15ce68 | 2342 | case QCA_QCA6390: |
fa9ad876 BG |
2343 | qcadev->bt_power = devm_kzalloc(&serdev->dev, |
2344 | sizeof(struct qca_power), | |
2345 | GFP_KERNEL); | |
2346 | if (!qcadev->bt_power) | |
2347 | return -ENOMEM; | |
9a15ce68 BG |
2348 | break; |
2349 | default: | |
2350 | break; | |
2351 | } | |
fa9ad876 | 2352 | |
9a15ce68 | 2353 | switch (qcadev->btsoc_type) { |
921ad287 BG |
2354 | case QCA_WCN6855: |
2355 | case QCA_WCN7850: | |
2356 | if (!device_property_present(&serdev->dev, "enable-gpios")) { | |
2357 | /* | |
2358 | * Backward compatibility with old DT sources. If the | |
2359 | * node doesn't have the 'enable-gpios' property then | |
2360 | * let's use the power sequencer. Otherwise, let's | |
2361 | * drive everything outselves. | |
2362 | */ | |
2363 | qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->dev, | |
2364 | "bluetooth"); | |
2365 | if (IS_ERR(qcadev->bt_power->pwrseq)) | |
2366 | return PTR_ERR(qcadev->bt_power->pwrseq); | |
2367 | ||
2368 | break; | |
2369 | } | |
2370 | fallthrough; | |
9a15ce68 BG |
2371 | case QCA_WCN3988: |
2372 | case QCA_WCN3990: | |
2373 | case QCA_WCN3991: | |
2374 | case QCA_WCN3998: | |
2375 | case QCA_WCN6750: | |
fa9ad876 | 2376 | qcadev->bt_power->dev = &serdev->dev; |
fa9ad876 BG |
2377 | err = qca_init_regulators(qcadev->bt_power, data->vregs, |
2378 | data->num_vregs); | |
2379 | if (err) { | |
2380 | BT_ERR("Failed to init regulators:%d", err); | |
ae563183 | 2381 | return err; |
fa9ad876 | 2382 | } |
05ba533c | 2383 | |
fa9ad876 | 2384 | qcadev->bt_power->vregs_on = false; |
05ba533c | 2385 | |
d8f97da1 VLNG |
2386 | qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", |
2387 | GPIOD_OUT_LOW); | |
56d074d2 | 2388 | if (IS_ERR(qcadev->bt_en) && |
095327fe SK |
2389 | (data->soc_type == QCA_WCN6750 || |
2390 | data->soc_type == QCA_WCN6855)) { | |
d8f97da1 | 2391 | dev_err(&serdev->dev, "failed to acquire BT_EN gpio\n"); |
3d05fc82 | 2392 | return PTR_ERR(qcadev->bt_en); |
d8f97da1 VLNG |
2393 | } |
2394 | ||
3d05fc82 BG |
2395 | if (!qcadev->bt_en) |
2396 | power_ctrl_enabled = false; | |
2397 | ||
d8f97da1 VLNG |
2398 | qcadev->sw_ctrl = devm_gpiod_get_optional(&serdev->dev, "swctrl", |
2399 | GPIOD_IN); | |
56d074d2 | 2400 | if (IS_ERR(qcadev->sw_ctrl) && |
095327fe | 2401 | (data->soc_type == QCA_WCN6750 || |
e0c1278a | 2402 | data->soc_type == QCA_WCN6855 || |
3d05fc82 BG |
2403 | data->soc_type == QCA_WCN7850)) { |
2404 | dev_err(&serdev->dev, "failed to acquire SW_CTRL gpio\n"); | |
2405 | return PTR_ERR(qcadev->sw_ctrl); | |
2406 | } | |
d8f97da1 | 2407 | |
66cb7051 VLNG |
2408 | qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL); |
2409 | if (IS_ERR(qcadev->susclk)) { | |
2410 | dev_err(&serdev->dev, "failed to acquire clk\n"); | |
2411 | return PTR_ERR(qcadev->susclk); | |
2412 | } | |
691d54d0 | 2413 | break; |
e5d6468f | 2414 | |
9a15ce68 | 2415 | case QCA_QCA6390: |
f3660957 BG |
2416 | if (dev_of_node(&serdev->dev)) { |
2417 | qcadev->bt_power->pwrseq = devm_pwrseq_get(&serdev->dev, | |
2418 | "bluetooth"); | |
2419 | if (IS_ERR(qcadev->bt_power->pwrseq)) | |
2420 | return PTR_ERR(qcadev->bt_power->pwrseq); | |
2421 | break; | |
2422 | } | |
2423 | fallthrough; | |
9a15ce68 | 2424 | |
691d54d0 | 2425 | default: |
77131dfe | 2426 | qcadev->bt_en = devm_gpiod_get_optional(&serdev->dev, "enable", |
fa9ad876 | 2427 | GPIOD_OUT_LOW); |
56d074d2 | 2428 | if (IS_ERR(qcadev->bt_en)) { |
3d05fc82 BG |
2429 | dev_err(&serdev->dev, "failed to acquire enable gpio\n"); |
2430 | return PTR_ERR(qcadev->bt_en); | |
fa9ad876 | 2431 | } |
05ba533c | 2432 | |
3d05fc82 BG |
2433 | if (!qcadev->bt_en) |
2434 | power_ctrl_enabled = false; | |
2435 | ||
77131dfe | 2436 | qcadev->susclk = devm_clk_get_optional(&serdev->dev, NULL); |
4c07a5d7 | 2437 | if (IS_ERR(qcadev->susclk)) { |
8a208b24 | 2438 | dev_warn(&serdev->dev, "failed to acquire clk\n"); |
4c07a5d7 | 2439 | return PTR_ERR(qcadev->susclk); |
8a208b24 | 2440 | } |
4c07a5d7 DC |
2441 | err = clk_set_rate(qcadev->susclk, SUSCLK_RATE_32KHZ); |
2442 | if (err) | |
2443 | return err; | |
2444 | ||
2445 | err = clk_prepare_enable(qcadev->susclk); | |
2446 | if (err) | |
2447 | return err; | |
fa9ad876 | 2448 | |
b80f4e3b BG |
2449 | err = devm_add_action_or_reset(&serdev->dev, |
2450 | qca_clk_disable_unprepare, | |
2451 | qcadev->susclk); | |
2452 | if (err) | |
2453 | return err; | |
2454 | ||
b8093157 BG |
2455 | } |
2456 | ||
2457 | err = hci_uart_register_device(&qcadev->serdev_hu, &qca_proto); | |
2458 | if (err) { | |
2459 | BT_ERR("serdev registration failed"); | |
2460 | return err; | |
fa9ad876 BG |
2461 | } |
2462 | ||
85e90d93 APS |
2463 | hdev = qcadev->serdev_hu.hdev; |
2464 | ||
8a208b24 | 2465 | if (power_ctrl_enabled) { |
8a208b24 RL |
2466 | set_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks); |
2467 | hdev->shutdown = qca_power_off; | |
2468 | } | |
05ba533c | 2469 | |
54780138 APS |
2470 | if (data) { |
2471 | /* Wideband speech support must be set per driver since it can't | |
2472 | * be queried via hci. Same with the valid le states quirk. | |
2473 | */ | |
2474 | if (data->capabilities & QCA_CAP_WIDEBAND_SPEECH) | |
2475 | set_bit(HCI_QUIRK_WIDEBAND_SPEECH_SUPPORTED, | |
2476 | &hdev->quirks); | |
2477 | ||
aae6b812 LAD |
2478 | if (!(data->capabilities & QCA_CAP_VALID_LE_STATES)) |
2479 | set_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks); | |
54780138 | 2480 | } |
a228f7a4 | 2481 | |
ae563183 | 2482 | return 0; |
05ba533c TE |
2483 | } |
2484 | ||
2485 | static void qca_serdev_remove(struct serdev_device *serdev) | |
2486 | { | |
2487 | struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); | |
054ec5e9 | 2488 | struct qca_power *power = qcadev->bt_power; |
05ba533c | 2489 | |
691d54d0 NA |
2490 | switch (qcadev->btsoc_type) { |
2491 | case QCA_WCN3988: | |
2492 | case QCA_WCN3990: | |
2493 | case QCA_WCN3991: | |
2494 | case QCA_WCN3998: | |
2495 | case QCA_WCN6750: | |
2496 | case QCA_WCN6855: | |
e0c1278a | 2497 | case QCA_WCN7850: |
b80f4e3b | 2498 | if (power->vregs_on) |
691d54d0 | 2499 | qca_power_shutdown(&qcadev->serdev_hu); |
b80f4e3b | 2500 | break; |
691d54d0 | 2501 | default: |
84f92882 | 2502 | break; |
691d54d0 | 2503 | } |
05ba533c | 2504 | |
fa9ad876 | 2505 | hci_uart_unregister_device(&qcadev->serdev_hu); |
05ba533c TE |
2506 | } |
2507 | ||
7e7bbddd ZH |
2508 | static void qca_serdev_shutdown(struct device *dev) |
2509 | { | |
2510 | int ret; | |
2511 | int timeout = msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS); | |
2512 | struct serdev_device *serdev = to_serdev_device(dev); | |
2513 | struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); | |
272970be KK |
2514 | struct hci_uart *hu = &qcadev->serdev_hu; |
2515 | struct hci_dev *hdev = hu->hdev; | |
7e7bbddd ZH |
2516 | const u8 ibs_wake_cmd[] = { 0xFD }; |
2517 | const u8 edl_reset_soc_cmd[] = { 0x01, 0x00, 0xFC, 0x01, 0x05 }; | |
2518 | ||
2519 | if (qcadev->btsoc_type == QCA_QCA6390) { | |
88e72239 ZH |
2520 | /* The purpose of sending the VSC is to reset SOC into a initial |
2521 | * state and the state will ensure next hdev->setup() success. | |
2522 | * if HCI_QUIRK_NON_PERSISTENT_SETUP is set, it means that | |
2523 | * hdev->setup() can do its job regardless of SoC state, so | |
2524 | * don't need to send the VSC. | |
2525 | * if HCI_SETUP is set, it means that hdev->setup() was never | |
2526 | * invoked and the SOC is already in the initial state, so | |
2527 | * don't also need to send the VSC. | |
2528 | */ | |
2529 | if (test_bit(HCI_QUIRK_NON_PERSISTENT_SETUP, &hdev->quirks) || | |
2530 | hci_dev_test_flag(hdev, HCI_SETUP)) | |
272970be KK |
2531 | return; |
2532 | ||
88e72239 ZH |
2533 | /* The serdev must be in open state when conrol logic arrives |
2534 | * here, so also fix the use-after-free issue caused by that | |
2535 | * the serdev is flushed or wrote after it is closed. | |
2536 | */ | |
7e7bbddd ZH |
2537 | serdev_device_write_flush(serdev); |
2538 | ret = serdev_device_write_buf(serdev, ibs_wake_cmd, | |
2539 | sizeof(ibs_wake_cmd)); | |
2540 | if (ret < 0) { | |
2541 | BT_ERR("QCA send IBS_WAKE_IND error: %d", ret); | |
2542 | return; | |
2543 | } | |
2544 | serdev_device_wait_until_sent(serdev, timeout); | |
2545 | usleep_range(8000, 10000); | |
2546 | ||
2547 | serdev_device_write_flush(serdev); | |
2548 | ret = serdev_device_write_buf(serdev, edl_reset_soc_cmd, | |
2549 | sizeof(edl_reset_soc_cmd)); | |
2550 | if (ret < 0) { | |
2551 | BT_ERR("QCA send EDL_RESET_REQ error: %d", ret); | |
2552 | return; | |
2553 | } | |
2554 | serdev_device_wait_until_sent(serdev, timeout); | |
2555 | usleep_range(8000, 10000); | |
2556 | } | |
2557 | } | |
2558 | ||
41d5b25f CC |
2559 | static int __maybe_unused qca_suspend(struct device *dev) |
2560 | { | |
feac90d7 ZH |
2561 | struct serdev_device *serdev = to_serdev_device(dev); |
2562 | struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); | |
2563 | struct hci_uart *hu = &qcadev->serdev_hu; | |
41d5b25f CC |
2564 | struct qca_data *qca = hu->priv; |
2565 | unsigned long flags; | |
e2a119cd | 2566 | bool tx_pending = false; |
41d5b25f CC |
2567 | int ret = 0; |
2568 | u8 cmd; | |
2be43aba | 2569 | u32 wait_timeout = 0; |
41d5b25f CC |
2570 | |
2571 | set_bit(QCA_SUSPENDING, &qca->flags); | |
2572 | ||
55c0bd77 VLNG |
2573 | /* if BT SoC is running with default firmware then it does not |
2574 | * support in-band sleep | |
2575 | */ | |
2576 | if (test_bit(QCA_ROM_FW, &qca->flags)) | |
2577 | return 0; | |
2578 | ||
ad3a9c0e VLNG |
2579 | /* During SSR after memory dump collection, controller will be |
2580 | * powered off and then powered on.If controller is powered off | |
2581 | * during SSR then we should wait until SSR is completed. | |
2582 | */ | |
2583 | if (test_bit(QCA_BT_OFF, &qca->flags) && | |
2584 | !test_bit(QCA_SSR_TRIGGERED, &qca->flags)) | |
2be43aba VLNG |
2585 | return 0; |
2586 | ||
1bb0c663 VLNG |
2587 | if (test_bit(QCA_IBS_DISABLED, &qca->flags) || |
2588 | test_bit(QCA_SSR_TRIGGERED, &qca->flags)) { | |
2be43aba VLNG |
2589 | wait_timeout = test_bit(QCA_SSR_TRIGGERED, &qca->flags) ? |
2590 | IBS_DISABLE_SSR_TIMEOUT_MS : | |
2591 | FW_DOWNLOAD_TIMEOUT_MS; | |
2592 | ||
2593 | /* QCA_IBS_DISABLED flag is set to true, During FW download | |
2594 | * and during memory dump collection. It is reset to false, | |
ad3a9c0e | 2595 | * After FW download complete. |
2be43aba VLNG |
2596 | */ |
2597 | wait_on_bit_timeout(&qca->flags, QCA_IBS_DISABLED, | |
2598 | TASK_UNINTERRUPTIBLE, msecs_to_jiffies(wait_timeout)); | |
2599 | ||
2600 | if (test_bit(QCA_IBS_DISABLED, &qca->flags)) { | |
2601 | bt_dev_err(hu->hdev, "SSR or FW download time out"); | |
2602 | ret = -ETIMEDOUT; | |
2603 | goto error; | |
2604 | } | |
2605 | } | |
2606 | ||
41d5b25f CC |
2607 | cancel_work_sync(&qca->ws_awake_device); |
2608 | cancel_work_sync(&qca->ws_awake_rx); | |
2609 | ||
2610 | spin_lock_irqsave_nested(&qca->hci_ibs_lock, | |
2611 | flags, SINGLE_DEPTH_NESTING); | |
2612 | ||
2613 | switch (qca->tx_ibs_state) { | |
2614 | case HCI_IBS_TX_WAKING: | |
2615 | del_timer(&qca->wake_retrans_timer); | |
a3b4cbfc | 2616 | fallthrough; |
41d5b25f CC |
2617 | case HCI_IBS_TX_AWAKE: |
2618 | del_timer(&qca->tx_idle_timer); | |
2619 | ||
2620 | serdev_device_write_flush(hu->serdev); | |
2621 | cmd = HCI_IBS_SLEEP_IND; | |
2622 | ret = serdev_device_write_buf(hu->serdev, &cmd, sizeof(cmd)); | |
2623 | ||
2624 | if (ret < 0) { | |
2625 | BT_ERR("Failed to send SLEEP to device"); | |
2626 | break; | |
2627 | } | |
2628 | ||
2629 | qca->tx_ibs_state = HCI_IBS_TX_ASLEEP; | |
2630 | qca->ibs_sent_slps++; | |
e2a119cd | 2631 | tx_pending = true; |
41d5b25f CC |
2632 | break; |
2633 | ||
2634 | case HCI_IBS_TX_ASLEEP: | |
2635 | break; | |
2636 | ||
2637 | default: | |
2638 | BT_ERR("Spurious tx state %d", qca->tx_ibs_state); | |
2639 | ret = -EINVAL; | |
2640 | break; | |
2641 | } | |
2642 | ||
2643 | spin_unlock_irqrestore(&qca->hci_ibs_lock, flags); | |
2644 | ||
2645 | if (ret < 0) | |
2646 | goto error; | |
2647 | ||
e2a119cd MK |
2648 | if (tx_pending) { |
2649 | serdev_device_wait_until_sent(hu->serdev, | |
2650 | msecs_to_jiffies(CMD_TRANS_TIMEOUT_MS)); | |
201a1124 | 2651 | serial_clock_vote(HCI_IBS_TX_VOTE_CLOCK_OFF, hu); |
e2a119cd | 2652 | } |
41d5b25f CC |
2653 | |
2654 | /* Wait for HCI_IBS_SLEEP_IND sent by device to indicate its Tx is going | |
2655 | * to sleep, so that the packet does not wake the system later. | |
2656 | */ | |
41d5b25f CC |
2657 | ret = wait_event_interruptible_timeout(qca->suspend_wait_q, |
2658 | qca->rx_ibs_state == HCI_IBS_RX_ASLEEP, | |
2659 | msecs_to_jiffies(IBS_BTSOC_TX_IDLE_TIMEOUT_MS)); | |
4da385f7 MK |
2660 | if (ret == 0) { |
2661 | ret = -ETIMEDOUT; | |
2662 | goto error; | |
eff981f6 | 2663 | } |
41d5b25f | 2664 | |
4da385f7 | 2665 | return 0; |
41d5b25f CC |
2666 | |
2667 | error: | |
2668 | clear_bit(QCA_SUSPENDING, &qca->flags); | |
2669 | ||
2670 | return ret; | |
2671 | } | |
2672 | ||
2673 | static int __maybe_unused qca_resume(struct device *dev) | |
2674 | { | |
feac90d7 ZH |
2675 | struct serdev_device *serdev = to_serdev_device(dev); |
2676 | struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); | |
2677 | struct hci_uart *hu = &qcadev->serdev_hu; | |
41d5b25f CC |
2678 | struct qca_data *qca = hu->priv; |
2679 | ||
2680 | clear_bit(QCA_SUSPENDING, &qca->flags); | |
2681 | ||
2682 | return 0; | |
2683 | } | |
2684 | ||
2685 | static SIMPLE_DEV_PM_OPS(qca_pm_ops, qca_suspend, qca_resume); | |
2686 | ||
e5d6468f | 2687 | #ifdef CONFIG_OF |
05ba533c | 2688 | static const struct of_device_id qca_bluetooth_of_match[] = { |
a7f8dedb | 2689 | { .compatible = "qcom,qca2066-bt", .data = &qca_soc_data_qca2066}, |
05ba533c | 2690 | { .compatible = "qcom,qca6174-bt" }, |
e5d6468f | 2691 | { .compatible = "qcom,qca6390-bt", .data = &qca_soc_data_qca6390}, |
31d4ab85 | 2692 | { .compatible = "qcom,qca9377-bt" }, |
f904feef | 2693 | { .compatible = "qcom,wcn3988-bt", .data = &qca_soc_data_wcn3988}, |
523760b7 | 2694 | { .compatible = "qcom,wcn3990-bt", .data = &qca_soc_data_wcn3990}, |
7d250a06 | 2695 | { .compatible = "qcom,wcn3991-bt", .data = &qca_soc_data_wcn3991}, |
523760b7 | 2696 | { .compatible = "qcom,wcn3998-bt", .data = &qca_soc_data_wcn3998}, |
d8f97da1 | 2697 | { .compatible = "qcom,wcn6750-bt", .data = &qca_soc_data_wcn6750}, |
095327fe | 2698 | { .compatible = "qcom,wcn6855-bt", .data = &qca_soc_data_wcn6855}, |
e0c1278a | 2699 | { .compatible = "qcom,wcn7850-bt", .data = &qca_soc_data_wcn7850}, |
05ba533c TE |
2700 | { /* sentinel */ } |
2701 | }; | |
2702 | MODULE_DEVICE_TABLE(of, qca_bluetooth_of_match); | |
e5d6468f RL |
2703 | #endif |
2704 | ||
2705 | #ifdef CONFIG_ACPI | |
2706 | static const struct acpi_device_id qca_bluetooth_acpi_match[] = { | |
a7f8dedb | 2707 | { "QCOM2066", (kernel_ulong_t)&qca_soc_data_qca2066 }, |
e5d6468f RL |
2708 | { "QCOM6390", (kernel_ulong_t)&qca_soc_data_qca6390 }, |
2709 | { "DLA16390", (kernel_ulong_t)&qca_soc_data_qca6390 }, | |
2710 | { "DLB16390", (kernel_ulong_t)&qca_soc_data_qca6390 }, | |
2711 | { "DLB26390", (kernel_ulong_t)&qca_soc_data_qca6390 }, | |
2712 | { }, | |
2713 | }; | |
2714 | MODULE_DEVICE_TABLE(acpi, qca_bluetooth_acpi_match); | |
2715 | #endif | |
2716 | ||
6ce95a30 STA |
2717 | #ifdef CONFIG_DEV_COREDUMP |
2718 | static void hciqca_coredump(struct device *dev) | |
2719 | { | |
2720 | struct serdev_device *serdev = to_serdev_device(dev); | |
2721 | struct qca_serdev *qcadev = serdev_device_get_drvdata(serdev); | |
2722 | struct hci_uart *hu = &qcadev->serdev_hu; | |
2723 | struct hci_dev *hdev = hu->hdev; | |
2724 | ||
2725 | if (hdev->dump.coredump) | |
2726 | hdev->dump.coredump(hdev); | |
2727 | } | |
2728 | #endif | |
05ba533c TE |
2729 | |
2730 | static struct serdev_device_driver qca_serdev_driver = { | |
2731 | .probe = qca_serdev_probe, | |
2732 | .remove = qca_serdev_remove, | |
2733 | .driver = { | |
2734 | .name = "hci_uart_qca", | |
e5d6468f RL |
2735 | .of_match_table = of_match_ptr(qca_bluetooth_of_match), |
2736 | .acpi_match_table = ACPI_PTR(qca_bluetooth_acpi_match), | |
7e7bbddd | 2737 | .shutdown = qca_serdev_shutdown, |
41d5b25f | 2738 | .pm = &qca_pm_ops, |
6ce95a30 STA |
2739 | #ifdef CONFIG_DEV_COREDUMP |
2740 | .coredump = hciqca_coredump, | |
2741 | #endif | |
05ba533c TE |
2742 | }, |
2743 | }; | |
2744 | ||
0ff252c1 BYTK |
2745 | int __init qca_init(void) |
2746 | { | |
05ba533c TE |
2747 | serdev_device_driver_register(&qca_serdev_driver); |
2748 | ||
0ff252c1 BYTK |
2749 | return hci_uart_register_proto(&qca_proto); |
2750 | } | |
2751 | ||
2752 | int __exit qca_deinit(void) | |
2753 | { | |
05ba533c TE |
2754 | serdev_device_driver_unregister(&qca_serdev_driver); |
2755 | ||
0ff252c1 BYTK |
2756 | return hci_uart_unregister_proto(&qca_proto); |
2757 | } |