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drivers: bluetooth: Add BLE low power mode for cyw920829m2evk_02
Add BLE low power mode for cyw920829m2evk_02 Signed-off-by: Sreeram Tatapudi <[email protected]>
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‎drivers/bluetooth/hci/hci_ifx_cyw208xx.c‎

Lines changed: 117 additions & 61 deletions
Original file line numberDiff line numberDiff line change
@@ -5,46 +5,46 @@
55
* SPDX-License-Identifier: Apache-2.0
66
*/
77

8-
/**
9-
* @brief Zephyr CYW20829 driver.
10-
*
11-
* This driver uses btstack-integration asset as hosts platform adaptation layer
12-
* (porting layer) for CYW20829. btstack-integration layer implements/
13-
* invokes the interfaces defined by BTSTACK to enable communication
14-
* with the BT controller by using IPC_BTSS (IPC Bluetooth sub-system interface).
15-
* Zephyr CYW20829 driver implements wiced_bt_**** functions requreds for
16-
* btstack-integration asset and Zephyr Bluetooth driver interface
17-
* (defined in struct bt_hci_driver).
18-
*
19-
* CM33 (application core)
20-
* |=========================================|
21-
* | |-------------------------| |
22-
* | | Zephyr application | |
23-
* | |-------------------------| |
24-
* | | |
25-
* | |------------| |
26-
* | | Zephyr | |
27-
* | | Bluetooth | |
28-
* CM33 (BTSS core) | | Host | |
29-
* |=====================| | |------------| |
30-
* | | | | |
31-
* | |---------------| | | |--------------| | -----------| |
32-
* | | Bluetooth | | IPC_BTSS | | btstack- | | Zephyr | |
33-
* | | Controller FW | | <--------|-> | integration | ---- | CYW20829 | |
34-
* | |---------------| | | | asset | | driver | |
35-
* | | | |--------------| |------------| |
36-
* |=====================| | |
37-
* | |=========================================|
38-
* |====================|
39-
* | CYW20829 |
40-
* | Bluetooth |
41-
* |====================|
42-
*
43-
* NOTE:
44-
* cyw920829 requires fetch binary files of Bluetooth controller firmware.
45-
* To fetch Binary Blobs: west blobs fetch hal_infineon
46-
*
47-
*/
8+
/**
9+
* @brief Zephyr CYW20829 driver.
10+
*
11+
* This driver uses btstack-integration asset as hosts platform adaptation layer
12+
* (porting layer) for CYW20829. btstack-integration layer implements/
13+
* invokes the interfaces defined by BTSTACK to enable communication
14+
* with the BT controller by using IPC_BTSS (IPC Bluetooth sub-system interface).
15+
* Zephyr CYW20829 driver implements wiced_bt_**** functions requreds for
16+
* btstack-integration asset and Zephyr Bluetooth driver interface
17+
* (defined in struct bt_hci_driver).
18+
*
19+
* CM33 (application core)
20+
* |=========================================|
21+
* | |-------------------------| |
22+
* | | Zephyr application | |
23+
* | |-------------------------| |
24+
* | | |
25+
* | |------------| |
26+
* | | Zephyr | |
27+
* | | Bluetooth | |
28+
* CM33 (BTSS core) | | Host | |
29+
* |=====================| | |------------| |
30+
* | | | | |
31+
* | |---------------| | | |--------------| | -----------| |
32+
* | | Bluetooth | | IPC_BTSS | | btstack- | | Zephyr | |
33+
* | | Controller FW | | <--------|-> | integration | ---- | CYW20829 | |
34+
* | |---------------| | | | asset | | driver | |
35+
* | | | |--------------| |------------| |
36+
* |=====================| | |
37+
* | |=========================================|
38+
* |====================|
39+
* | CYW20829 |
40+
* | Bluetooth |
41+
* |====================|
42+
*
43+
* NOTE:
44+
* cyw920829 requires fetch binary files of Bluetooth controller firmware.
45+
* To fetch Binary Blobs: west blobs fetch hal_infineon
46+
*
47+
*/
4848

4949
#include <errno.h>
5050
#include <stddef.h>
@@ -69,7 +69,9 @@
6969
#include <cyabs_rtos.h>
7070
#include <cybt_result.h>
7171

72-
#define LOG_LEVEL CONFIG_BT_HCI_DRIVER_LOG_LEVEL
72+
#include "cyhal_syspm.h"
73+
74+
#define LOG_LEVEL CONFIG_BT_HCI_DRIVER_LOG_LEVEL
7375
#include <zephyr/logging/log.h>
7476
LOG_MODULE_REGISTER(cyw208xx);
7577

@@ -91,25 +93,34 @@ enum {
9193
extern const uint8_t brcm_patchram_buf[];
9294
extern const int brcm_patch_ram_length;
9395

94-
#define CYBSP_BT_PLATFORM_CFG_SLEEP_MODE_LP_ENABLED (0)
95-
#define BTM_SET_LOCAL_DEV_ADDR_LENGTH 6
96+
#define CYBSP_BT_PLATFORM_CFG_SLEEP_MODE_LP_ENABLED (1)
97+
#define BTM_SET_LOCAL_DEV_ADDR_LENGTH 6
9698

9799
static K_SEM_DEFINE(hci_sem, 1, 1);
98100
static K_SEM_DEFINE(cybt_platform_task_init_sem, 0, 1);
99101

102+
cy_en_syspm_status_t cyw208xx_syspm_callback(cy_stc_syspm_callback_params_t *callbackParams,
103+
cy_en_syspm_callback_mode_t mode);
104+
105+
static cy_stc_syspm_callback_params_t cyw208xx_syspm_callback_param = {NULL, NULL};
106+
static cy_stc_syspm_callback_t cyw208xx_syspm_callback_cfg = {
107+
.callback = &cyw208xx_syspm_callback,
108+
.type = (cy_en_syspm_callback_type_t)CY_SYSPM_DEEPSLEEP | CY_SYSPM_SLEEP,
109+
.callbackParams = &cyw208xx_syspm_callback_param,
110+
.order = 253u,
111+
};
100112

101-
/******************************************************************************
102-
* Function Declarations
103-
******************************************************************************/
113+
/* Extern btstack integration functions */
104114
extern void host_stack_platform_interface_init(void);
105115
extern void cybt_platform_hci_wait_for_boot_fully_up(bool is_from_isr);
106116
extern uint8_t *host_stack_get_acl_to_lower_buffer(wiced_bt_transport_t transport, uint32_t size);
107-
extern wiced_result_t host_stack_send_acl_to_lower(wiced_bt_transport_t transport,
108-
uint8_t *data, uint16_t len);
117+
extern wiced_result_t host_stack_send_acl_to_lower(wiced_bt_transport_t transport, uint8_t *data,
118+
uint16_t len);
109119
extern wiced_result_t host_stack_send_cmd_to_lower(uint8_t *cmd, uint16_t cmd_len);
110120
extern wiced_result_t host_stack_send_iso_to_lower(uint8_t *data, uint16_t len);
111121
extern cybt_result_t cybt_platform_msg_to_bt_task(const uint16_t msg, bool is_from_isr);
112122
extern void cybt_bttask_deinit(void);
123+
uint8_t task_queue_utilization(void);
113124

114125
static int cyw208xx_bt_firmware_download(const uint8_t *firmware_image, uint32_t size)
115126
{
@@ -129,11 +140,16 @@ static int cyw208xx_bt_firmware_download(const uint8_t *firmware_image, uint32_t
129140
size_t data_length = data[2]; /* data length from firmware image block */
130141
uint16_t op_code = *(uint16_t *)data;
131142

143+
if (op_code == BT_HCI_VND_OP_LAUNCH_RAM) {
144+
/* set hf0 to 48MHz */
145+
Cy_SysClk_ClkHfSetSource(0U, CY_SYSCLK_CLKHF_IN_CLKPATH1);
146+
}
147+
132148
/* Allocate buffer for hci_write_ram/hci_launch_ram command. */
133149
buf = bt_hci_cmd_create(op_code, data_length);
134150
if (buf == NULL) {
135151
LOG_ERR("Unable to allocate command buffer");
136-
return err;
152+
return -ENOBUFS;
137153
}
138154

139155
/* Add data part of packet */
@@ -174,15 +190,20 @@ static int cyw208xx_setup(const struct device *dev, const struct bt_hci_setup_pa
174190
int err;
175191
struct net_buf *buf;
176192

193+
/* Avoid sleep while downloading firmware */
194+
cyhal_syspm_lock_deepsleep();
195+
177196
/* Send HCI_RESET */
178197
err = bt_hci_cmd_send_sync(BT_HCI_OP_RESET, NULL, NULL);
179198
if (err) {
199+
cyhal_syspm_unlock_deepsleep();
180200
return err;
181201
}
182202

183203
/* BT firmware download */
184204
err = cyw208xx_bt_firmware_download(brcm_patchram_buf, (uint32_t)brcm_patch_ram_length);
185205
if (err) {
206+
cyhal_syspm_unlock_deepsleep();
186207
return err;
187208
}
188209

@@ -193,6 +214,7 @@ static int cyw208xx_setup(const struct device *dev, const struct bt_hci_setup_pa
193214
buf = bt_hci_cmd_create(BT_HCI_VND_OP_SET_LOCAL_DEV_ADDR, BTM_SET_LOCAL_DEV_ADDR_LENGTH);
194215
if (buf == NULL) {
195216
LOG_ERR("Unable to allocate command buffer");
217+
cyhal_syspm_unlock_deepsleep();
196218
return -ENOMEM;
197219
}
198220

@@ -215,9 +237,12 @@ static int cyw208xx_setup(const struct device *dev, const struct bt_hci_setup_pa
215237
err = bt_hci_cmd_send_sync(BT_HCI_VND_OP_SET_LOCAL_DEV_ADDR, buf, NULL);
216238
if (err) {
217239
LOG_ERR("Failed to set public address (%d)", err);
240+
cyhal_syspm_unlock_deepsleep();
218241
return err;
219242
}
220243

244+
cyhal_syspm_unlock_deepsleep();
245+
221246
return 0;
222247
}
223248

@@ -317,25 +342,30 @@ static int cyw208xx_hci_init(const struct device *dev)
317342
const cybt_platform_config_t cybsp_bt_platform_cfg = {
318343
.hci_config = {
319344
.hci_transport = CYBT_HCI_IPC,
320-
},
345+
},
321346

322347
.controller_config = {
323348
.sleep_mode = {
324-
.sleep_mode_enabled = CYBSP_BT_PLATFORM_CFG_SLEEP_MODE_LP_ENABLED,
325-
},
326-
}
327-
};
349+
.sleep_mode_enabled =
350+
CYBSP_BT_PLATFORM_CFG_SLEEP_MODE_LP_ENABLED,
351+
},
352+
}};
328353

329354
/* Configure platform specific settings for the BT device */
330355
cybt_platform_config_init(&cybsp_bt_platform_cfg);
331356

357+
if (!Cy_SysPm_RegisterCallback(&cyw208xx_syspm_callback_cfg)) {
358+
LOG_ERR("Syspm Callback registering failed!");
359+
CY_ASSERT(0);
360+
}
332361
return 0;
333362
}
334363

335364
/* Implements wiced_bt_**** functions requreds for the btstack-integration asset */
336365

337-
wiced_result_t wiced_bt_dev_vendor_specific_command(uint16_t opcode, uint8_t param_len,
338-
uint8_t *param_buf, wiced_bt_dev_vendor_specific_command_complete_cback_t cback)
366+
wiced_result_t
367+
wiced_bt_dev_vendor_specific_command(uint16_t opcode, uint8_t param_len, uint8_t *param_buf,
368+
wiced_bt_dev_vendor_specific_command_complete_cback_t cback)
339369

340370
{
341371
/*
@@ -396,7 +426,6 @@ void wiced_bt_process_hci(hci_packet_type_t pti, uint8_t *data, uint32_t length)
396426

397427
default:
398428
return;
399-
400429
}
401430

402431
buf_tailroom = net_buf_tailroom(buf);
@@ -448,10 +477,37 @@ void wiced_bt_process_timer(void)
448477
/* NA for Zephyr */
449478
}
450479

451-
#define CYW208XX_DEVICE_INIT(inst) \
452-
static struct cyw208xx_data cyw208xx_data_##inst = { \
453-
}; \
454-
DEVICE_DT_INST_DEFINE(inst, cyw208xx_hci_init, NULL, &cyw208xx_data_##inst, NULL, \
480+
cy_en_syspm_status_t cyw208xx_syspm_callback(cy_stc_syspm_callback_params_t *callbackParams,
481+
cy_en_syspm_callback_mode_t mode)
482+
{
483+
cy_en_syspm_status_t retVal = CY_SYSPM_FAIL;
484+
485+
CY_UNUSED_PARAMETER(callbackParams);
486+
487+
switch (mode) {
488+
case CY_SYSPM_CHECK_READY:
489+
case CY_SYSPM_BEFORE_TRANSITION: {
490+
retVal = (task_queue_utilization() == 0) ? CY_SYSPM_SUCCESS : CY_SYSPM_FAIL;
491+
break;
492+
}
493+
494+
case CY_SYSPM_CHECK_FAIL:
495+
case CY_SYSPM_AFTER_TRANSITION: {
496+
497+
retVal = CY_SYSPM_SUCCESS;
498+
break;
499+
}
500+
501+
default:
502+
break;
503+
}
504+
505+
return retVal;
506+
}
507+
508+
#define CYW208XX_DEVICE_INIT(inst) \
509+
static struct cyw208xx_data cyw208xx_data_##inst = {}; \
510+
DEVICE_DT_INST_DEFINE(inst, cyw208xx_hci_init, NULL, &cyw208xx_data_##inst, NULL, \
455511
POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE, &drv)
456512

457513
/* Only one instance supported */

‎west.yml‎

Lines changed: 1 addition & 1 deletion
Original file line numberDiff line numberDiff line change
@@ -183,7 +183,7 @@ manifest:
183183
groups:
184184
- hal
185185
- name: hal_infineon
186-
revision: d7b84320d8dc83df5e7f4e7359593a9c49120d4f
186+
revision: e0a50ce02c7cee59b7ce6fe8a3e0e6625f0891a9
187187
path: modules/hal/infineon
188188
groups:
189189
- hal

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