1 /*
2 * SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
3 *
4 * SPDX-License-Identifier: Apache-2.0
5 */
6
7 #include <stdint.h>
8 #include "esp_check.h"
9 #include "esp_log.h"
10 #include "freertos/FreeRTOS.h"
11 #include "esp_private/btbb.h"
12
13 #define BTBB_ENABLE_VERSION_PRINT 1
14
15 static _lock_t s_btbb_access_lock;
16 /* Reference count of enabling BT BB */
17 static uint8_t s_btbb_access_ref = 0;
18
19
20 #if SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
21 #include "esp_private/sleep_retention.h"
22 #include "btbb_retention_reg.h"
23 static const char* TAG = "btbb_init";
24
25 #if SOC_PM_RETENTION_HAS_CLOCK_BUG
26 #define BTBB_LINK_OWNER ENTRY(3)
27 #else
28 #define BTBB_LINK_OWNER ENTRY(0) | ENTRY(2)
29 #endif // SOC_PM_RETENTION_HAS_CLOCK_BUG
30
btbb_sleep_retention_init(void * arg)31 static esp_err_t btbb_sleep_retention_init(void *arg)
32 {
33 const static sleep_retention_entries_config_t btbb_regs_retention[] = {
34 [0] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEM_BT_BB_LINK(0x00), BB_PART_0_ADDR, BB_PART_0_ADDR, BB_PART_0_SIZE, 0, 0), .owner = BTBB_LINK_OWNER },
35 [1] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEM_BT_BB_LINK(0x01), BB_PART_1_ADDR, BB_PART_1_ADDR, BB_PART_1_SIZE, 0, 0), .owner = BTBB_LINK_OWNER },
36 [2] = { .config = REGDMA_LINK_CONTINUOUS_INIT(REGDMA_MODEM_BT_BB_LINK(0x02), BB_PART_2_ADDR, BB_PART_2_ADDR, BB_PART_2_SIZE, 0, 0), .owner = BTBB_LINK_OWNER }
37 };
38 esp_err_t err = sleep_retention_entries_create(btbb_regs_retention, ARRAY_SIZE(btbb_regs_retention), REGDMA_LINK_PRI_BT_MAC_BB, SLEEP_RETENTION_MODULE_BT_BB);
39 ESP_RETURN_ON_ERROR(err, TAG, "failed to allocate memory for btbb retention");
40 ESP_LOGD(TAG, "btbb sleep retention initialization");
41 return ESP_OK;
42 }
43
btbb_sleep_retention_deinit(void)44 static void btbb_sleep_retention_deinit(void)
45 {
46 esp_err_t err = sleep_retention_module_free(SLEEP_RETENTION_MODULE_BT_BB);
47 if (err != ESP_OK) {
48 ESP_LOGW(TAG, "failed to destroy sleep retention linked list for btbb retention");
49 }
50 err = sleep_retention_module_deinit(SLEEP_RETENTION_MODULE_BT_BB);
51 if (err != ESP_OK) {
52 ESP_LOGW(TAG, "Modem BT BB retention callback unregister failed");
53 }
54 }
55 #endif // SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
56
57
esp_btbb_enable(void)58 void esp_btbb_enable(void)
59 {
60 _lock_acquire(&s_btbb_access_lock);
61 if (s_btbb_access_ref == 0) {
62 bt_bb_v2_init_cmplx(BTBB_ENABLE_VERSION_PRINT);
63 #if SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
64 sleep_retention_module_init_param_t init_param = {
65 .cbs = { .create = { .handle = btbb_sleep_retention_init, .arg = NULL } },
66 .depends = BIT(SLEEP_RETENTION_MODULE_CLOCK_MODEM)
67 };
68 esp_err_t err = sleep_retention_module_init(SLEEP_RETENTION_MODULE_BT_BB, &init_param);
69 if (err == ESP_OK) {
70 err = sleep_retention_module_allocate(SLEEP_RETENTION_MODULE_BT_BB);
71 if (err != ESP_OK) {
72 ESP_LOGW(TAG, "failed to allocate sleep retention linked list for btbb retention");
73 }
74 } else {
75 ESP_LOGW(TAG, "Modem BT BB retention callback register failed");
76 }
77 #endif // SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
78 }
79 s_btbb_access_ref++;
80 _lock_release(&s_btbb_access_lock);
81 }
82
esp_btbb_disable(void)83 void esp_btbb_disable(void)
84 {
85 _lock_acquire(&s_btbb_access_lock);
86 if (s_btbb_access_ref && (--s_btbb_access_ref == 0)) {
87 #if SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
88 btbb_sleep_retention_deinit();
89 #endif // SOC_PM_MODEM_RETENTION_BY_REGDMA && CONFIG_FREERTOS_USE_TICKLESS_IDLE
90 }
91 _lock_release(&s_btbb_access_lock);
92 }
93
