diff options
| author | Ricardo Salveti <ricardo.salveti@linaro.org> | 2017-01-25 22:24:45 -0200 |
|---|---|---|
| committer | Johan Hedberg <johan.hedberg@intel.com> | 2017-01-28 08:43:41 +0200 |
| commit | 4afe063aad8c8718bad77645f912a33d7ffaaf18 (patch) | |
| tree | 4fe4f60c9402c87f449796b6e978a2a527c954e4 /drivers/bluetooth/hci/spi.c | |
| parent | ef7f2bd54e0bdfc57866670aae53ca08f00a08ee (diff) | |
Bluetooth: SPI: introduce CONFIG_BLUETOOTH_SPI_BLUENRG
This new option is used to encapsulate the logic specific to devices
implementing the BlueNRG Bluetooth stack (e.g. X-NUCLEO-IDB05A1).
The current BlueNRG specific logic covers the HCI Reset handling and
the manual control of the SPI Chip Select line (normally not needed since
spi_transceive is also responsible for controlling the SPI CS line).
Change-Id: I5db4addf873eee0af2d957e2181c50aac53ab656
Signed-off-by: Ricardo Salveti <ricardo.salveti@linaro.org>
Diffstat (limited to 'drivers/bluetooth/hci/spi.c')
| -rw-r--r-- | drivers/bluetooth/hci/spi.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/drivers/bluetooth/hci/spi.c b/drivers/bluetooth/hci/spi.c index 3f716f783..44f8861d1 100644 --- a/drivers/bluetooth/hci/spi.c +++ b/drivers/bluetooth/hci/spi.c @@ -43,14 +43,18 @@ #define CMD_OCF 2 #define GPIO_IRQ_PIN CONFIG_BLUETOOTH_SPI_IRQ_PIN -#define GPIO_CS_PIN CONFIG_BLUETOOTH_SPI_CHIP_SELECT_PIN #define GPIO_RESET_PIN CONFIG_BLUETOOTH_SPI_RESET_PIN +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) +#define GPIO_CS_PIN CONFIG_BLUETOOTH_SPI_CHIP_SELECT_PIN +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ #define MAX_RX_MSG_LEN CONFIG_BLUETOOTH_SPI_RX_BUFFER_SIZE #define MAX_TX_MSG_LEN CONFIG_BLUETOOTH_SPI_TX_BUFFER_SIZE static struct device *spi_dev; +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) static struct device *cs_dev; +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ static struct device *irq_dev; static struct device *rst_dev; @@ -131,8 +135,10 @@ static void bt_spi_rx_thread(void) k_sem_take(&sem_busy, K_FOREVER); do { +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); gpio_pin_write(cs_dev, GPIO_CS_PIN, 0); +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ spi_transceive(spi_dev, header_master, 5, header_slave, 5); } while (header_slave[STATUS_HEADER_TOREAD] == 0 || @@ -144,7 +150,9 @@ static void bt_spi_rx_thread(void) spi_transceive(spi_dev, &dummy, 1, &rxmsg[i], 1); } +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ k_sem_give(&sem_busy); spi_dump_message("RX:ed", rxmsg, size); @@ -221,8 +229,10 @@ static int bt_spi_send(struct net_buf *buf) /* Poll sanity values until device has woken-up */ do { +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); gpio_pin_write(cs_dev, GPIO_CS_PIN, 0); +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ spi_transceive(spi_dev, header, 5, rxmsg, 5); /* @@ -236,12 +246,15 @@ static int bt_spi_send(struct net_buf *buf) /* Transmit the message */ spi_transceive(spi_dev, buf->data, buf->len, rxmsg, buf->len); +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) /* Deselect chip */ gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ k_sem_give(&sem_busy); spi_dump_message("TX:ed", buf->data, buf->len); +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) /* * Since a RESET has been requested, the chip will now restart. * Unfortunately the BlueNRG will reply with "reset received" but @@ -252,6 +265,7 @@ static int bt_spi_send(struct net_buf *buf) if (bt_spi_get_cmd(buf->data) == BT_HCI_OP_RESET) { k_sem_take(&sem_initialised, K_FOREVER); } +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ net_buf_unref(buf); @@ -267,10 +281,12 @@ static int bt_spi_open(void) spi_configure(spi_dev, &spi_conf); +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) /* Configure the CS (Chip Select) pin */ gpio_pin_configure(cs_dev, GPIO_CS_PIN, GPIO_DIR_OUT | GPIO_PUD_PULL_UP); gpio_pin_write(cs_dev, GPIO_CS_PIN, 1); +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ /* Configure IRQ pin and the IRQ call-back/handler */ gpio_pin_configure(irq_dev, GPIO_IRQ_PIN, @@ -319,12 +335,14 @@ static int _bt_spi_init(struct device *unused) return -EIO; } +#if defined(CONFIG_BLUETOOTH_SPI_BLUENRG) cs_dev = device_get_binding(CONFIG_BLUETOOTH_SPI_CHIP_SELECT_DEV_NAME); if (!cs_dev) { BT_ERR("Failed to initialize GPIO driver: %s", CONFIG_BLUETOOTH_SPI_CHIP_SELECT_DEV_NAME); return -EIO; } +#endif /* CONFIG_BLUETOOTH_SPI_BLUENRG */ irq_dev = device_get_binding(CONFIG_BLUETOOTH_SPI_IRQ_DEV_NAME); if (!irq_dev) { |