drivers: bluetooth: hci: add Ambiq Apollo3 Blue SOC support
This commit add the SPI-based HCI support for the Ambiq Apollo3 Blue SOC (e.g. Apollo3 Blue Plus, Apollo3 Blue) support. Also correct the dependency of necessary peripheral. Signed-off-by: Aaron Ye <aye@ambiq.com>
This commit is contained in:
Aaron Ye
Carles Cufí
parent
9684b957bc
commit
af54a38827
4 changed files with 82 additions and 9 deletions
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@ -130,8 +130,8 @@ config BT_NO_DRIVER
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config BT_AMBIQ_HCI
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bool "AMBIQ BT HCI driver"
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select SPI
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select GPIO
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select CLOCK_CONTROL
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select GPIO if SOC_SERIES_APOLLO4X
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select CLOCK_CONTROL if SOC_SERIES_APOLLO4X
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select BT_HCI_SETUP
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help
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Supports Ambiq Bluetooth SoC using SPI as the communication protocol.
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@ -25,8 +25,13 @@ LOG_MODULE_REGISTER(bt_apollox_driver);
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#include <zephyr/drivers/clock_control.h>
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#include <zephyr/drivers/clock_control/clock_control_ambiq.h>
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#include <am_mcu_apollo.h>
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#include "apollox_blue.h"
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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#include "am_devices_cooper.h"
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#elif (CONFIG_SOC_SERIES_APOLLO3X)
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#include "am_apollo3_bt_support.h"
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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#define HCI_SPI_NODE DT_COMPAT_GET_ANY_STATUS_OKAY(ambiq_bt_hci_spi)
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#define SPI_DEV_NODE DT_BUS(HCI_SPI_NODE)
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@ -44,6 +49,7 @@ LOG_MODULE_REGISTER(bt_apollox_driver);
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#define SPI_MAX_RX_MSG_LEN 258
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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static const struct gpio_dt_spec irq_gpio = GPIO_DT_SPEC_GET(HCI_SPI_NODE, irq_gpios);
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static const struct gpio_dt_spec rst_gpio = GPIO_DT_SPEC_GET(HCI_SPI_NODE, reset_gpios);
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static const struct gpio_dt_spec cs_gpio = GPIO_DT_SPEC_GET(SPI_DEV_NODE, cs_gpios);
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@ -54,10 +60,19 @@ static struct gpio_callback clkreq_gpio_cb;
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static const struct device *clk32m_dev = DEVICE_DT_GET(CLK_32M_NODE);
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static const struct device *clk32k_dev = DEVICE_DT_GET(CLK_32K_NODE);
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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extern void bt_packet_irq_isr(const struct device *unused1, struct gpio_callback *unused2,
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uint32_t unused3);
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void bt_apollo_rcv_isr_preprocess(void)
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{
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#if (CONFIG_SOC_SERIES_APOLLO3X)
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am_apollo3_bt_isr_pre();
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#endif /* CONFIG_SOC_SERIES_APOLLO3X */
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}
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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static bool irq_pin_state(void)
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{
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int pin_state;
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@ -117,10 +132,13 @@ static void bt_apollo_controller_reset(void)
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/* Give the controller some time to boot */
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k_sleep(K_MSEC(500));
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}
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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int bt_apollo_spi_send(uint8_t *data, uint16_t len, bt_spi_transceive_fun transceive)
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{
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int ret;
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int ret = -ENOTSUP;
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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uint8_t command[1] = {SPI_WRITE};
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uint8_t response[2] = {0, 0};
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uint16_t fail_count = 0;
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@ -139,18 +157,24 @@ int bt_apollo_spi_send(uint8_t *data, uint16_t len, bt_spi_transceive_fun transc
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break;
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}
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} while (fail_count++ < SPI_WRITE_TIMEOUT);
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#elif (CONFIG_SOC_SERIES_APOLLO3X)
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ret = transceive(data, len, NULL, 0);
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if ((ret) && (ret != AM_HAL_BLE_STATUS_SPI_NOT_READY)) {
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LOG_ERR("SPI write error %d", ret);
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}
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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return ret;
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}
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int bt_apollo_spi_rcv(uint8_t *data, uint16_t *len, bt_spi_transceive_fun transceive)
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{
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int ret;
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uint8_t command[1] = {SPI_READ};
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int ret = -ENOTSUP;
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uint8_t response[2] = {0, 0};
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uint16_t read_size = 0;
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do {
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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/* Skip if the IRQ pin is not in high state */
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if (!irq_pin_state()) {
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ret = -1;
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@ -158,10 +182,26 @@ int bt_apollo_spi_rcv(uint8_t *data, uint16_t *len, bt_spi_transceive_fun transc
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}
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/* Check the available packet bytes */
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uint8_t command[1] = {SPI_READ};
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ret = transceive(command, 1, response, 2);
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if (ret) {
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break;
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}
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#elif (CONFIG_SOC_SERIES_APOLLO3X)
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/* Skip if the IRQ bit is not set */
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if (!BLEIFn(0)->BSTATUS_b.BLEIRQ) {
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ret = -1;
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break;
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}
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/* Check the available packet bytes */
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ret = transceive(NULL, 0, response, 2);
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if (ret) {
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break;
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}
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#else
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break;
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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/* Check if the read size is acceptable */
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read_size = (uint16_t)(response[0] | response[1] << 8);
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@ -186,6 +226,7 @@ int bt_apollo_spi_rcv(uint8_t *data, uint16_t *len, bt_spi_transceive_fun transc
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bool bt_apollo_vnd_rcv_ongoing(uint8_t *data, uint16_t len)
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{
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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/* The vendor specific handshake command/response is incompatible with
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* standard Bluetooth HCI format, need to handle the received packets
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* specifically.
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@ -196,14 +237,18 @@ bool bt_apollo_vnd_rcv_ongoing(uint8_t *data, uint16_t len)
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} else {
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return false;
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}
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#else
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return false;
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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}
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int bt_hci_transport_setup(const struct device *dev)
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{
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ARG_UNUSED(dev);
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int ret;
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int ret = 0;
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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/* Configure the XO32MHz and XO32kHz clocks.*/
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clock_control_configure(clk32k_dev, NULL, NULL);
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clock_control_configure(clk32m_dev, NULL, NULL);
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@ -256,13 +301,18 @@ int bt_hci_transport_setup(const struct device *dev)
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/* Configure the interrupt edge for IRQ pin */
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gpio_pin_interrupt_configure_dt(&irq_gpio, GPIO_INT_EDGE_RISING);
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#elif (CONFIG_SOC_SERIES_APOLLO3X)
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IRQ_CONNECT(DT_IRQN(SPI_DEV_NODE), DT_IRQ(SPI_DEV_NODE, priority), bt_packet_irq_isr, 0, 0);
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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return 0;
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return ret;
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}
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int bt_apollo_controller_init(spi_transmit_fun transmit)
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{
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int ret;
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int ret = 0;
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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am_devices_cooper_callback_t cb = {
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.write = transmit,
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.reset = bt_apollo_controller_reset,
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@ -277,10 +327,21 @@ int bt_apollo_controller_init(spi_transmit_fun transmit)
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am_devices_cooper_set_initialize_state(AM_DEVICES_COOPER_STATE_INITIALIZE_FAIL);
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LOG_ERR("BT controller initialization fail");
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}
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#elif (CONFIG_SOC_SERIES_APOLLO3X)
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ret = am_apollo3_bt_controller_init();
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if (ret == AM_HAL_STATUS_SUCCESS) {
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LOG_INF("BT controller initialized");
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} else {
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LOG_ERR("BT controller initialization fail");
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}
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irq_enable(DT_IRQN(SPI_DEV_NODE));
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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return ret;
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}
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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static int bt_apollo_set_nvds(void)
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{
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int ret;
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@ -334,19 +395,23 @@ static int bt_apollo_set_nvds(void)
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return ret;
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}
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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int bt_apollo_vnd_setup(void)
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{
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int ret;
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int ret = 0;
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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/* Set the NVDS parameters to BLE controller */
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ret = bt_apollo_set_nvds();
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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return ret;
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}
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int bt_apollo_dev_init(void)
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{
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#if (CONFIG_SOC_SERIES_APOLLO4X)
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if (!gpio_is_ready_dt(&irq_gpio)) {
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LOG_ERR("IRQ GPIO device not ready");
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return -ENODEV;
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@ -361,6 +426,7 @@ int bt_apollo_dev_init(void)
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LOG_ERR("CLKREQ GPIO device not ready");
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return -ENODEV;
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}
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#endif /* CONFIG_SOC_SERIES_APOLLO4X */
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return 0;
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}
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@ -98,6 +98,12 @@ int bt_apollo_vnd_setup(void);
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*/
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bool bt_apollo_vnd_rcv_ongoing(uint8_t *data, uint16_t len);
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/**
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* @brief Do the specific preprocessing in HCI packet receiving ISR if needed,
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* for example, clear the interrupt status.
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*/
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void bt_apollo_rcv_isr_preprocess(void);
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#ifdef __cplusplus
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}
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#endif
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@ -67,6 +67,7 @@ static K_SEM_DEFINE(sem_spi_available, 1, 1);
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void bt_packet_irq_isr(const struct device *unused1, struct gpio_callback *unused2,
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uint32_t unused3)
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{
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bt_apollo_rcv_isr_preprocess();
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k_sem_give(&sem_irq);
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}
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