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drivers: hci: spi: update to new GPIO API

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Update bluetooth hcp spi driver to new GPIO API.
Following changes have been done:
- Use new gpio api functions
- Get reset, irq and cs flags from dt defines
- Define reset pin as active low and invert set/unset logic.

Tested on disco_l475_iot1 and 96b_carbon.

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2019-12-18 17:45:21 +01:00 • committed by Carles Cufí
commit bfc1a50eb9
4 changed files with 23 additions and 24 deletions
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4
boards/arm/96b_carbon/96b_carbon.dts
View file

@ -84,8 +84,8 @@
bt-hci@0 {
compatible = "zephyr,bt-hci-spi";
reg = <0>;
reset-gpios = <&gpiob 4 0>;
irq-gpios = <&gpiob 1 0>;
reset-gpios = <&gpiob 4 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
irq-gpios = <&gpiob 1 GPIO_ACTIVE_HIGH>;
spi-max-frequency = <2000000>;
label = "BT_HCI";
};

7
boards/arm/disco_l475_iot1/disco_l475_iot1.dts
View file

@ -117,13 +117,14 @@
&spi3 {
status = "okay";
cs-gpios = <&gpiod 13 0>, <&gpioe 0 GPIO_ACTIVE_HIGH>;
cs-gpios = <&gpiod 13 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>,
<&gpioe 0 GPIO_ACTIVE_HIGH>;
spbtle-rf@0 {
compatible = "zephyr,bt-hci-spi";
reg = <0>;
reset-gpios = <&gpioa 8 0>;
irq-gpios = <&gpioe 6 0>;
reset-gpios = <&gpioa 8 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
irq-gpios = <&gpioe 6 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>;
spi-max-frequency = <2000000>;
label = "SPBTLE-RF";
};

6
boards/shields/x_nucleo_idb05a1/x_nucleo_idb05a1.overlay
View file

@ -5,13 +5,13 @@
*/
&arduino_spi {
cs-gpios = <&arduino_header 16 0>; /* D10 */
cs-gpios = <&arduino_header 16 (GPIO_ACTIVE_HIGH | GPIO_PULL_UP)>; /* D10 */
spbtle-rf@0 {
compatible = "zephyr,bt-hci-spi";
reg = <0>;
reset-gpios = <&arduino_header 13 0>; /* D7 */
irq-gpios = <&arduino_header 0 0>; /* A0 */
reset-gpios = <&arduino_header 13 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>; /* D7 */
irq-gpios = <&arduino_header 0 (GPIO_ACTIVE_HIGH | GPIO_PULL_DOWN)>; /* A0 */
spi-max-frequency = <2000000>;
label = "SPBTLE-RF";
};

30
drivers/bluetooth/hci/spi.c
View file

@ -46,9 +46,12 @@
#define CMD_OCF 2
#define GPIO_IRQ_PIN DT_INST_0_ZEPHYR_BT_HCI_SPI_IRQ_GPIOS_PIN
#define GPIO_IRQ_FLAGS DT_INST_0_ZEPHYR_BT_HCI_SPI_IRQ_GPIOS_FLAGS
#define GPIO_RESET_PIN DT_INST_0_ZEPHYR_BT_HCI_SPI_RESET_GPIOS_PIN
#define GPIO_RESET_FLAGS DT_INST_0_ZEPHYR_BT_HCI_SPI_RESET_GPIOS_FLAGS
#ifdef DT_INST_0_ZEPHYR_BT_HCI_SPI_CS_GPIOS_PIN
#define GPIO_CS_PIN DT_INST_0_ZEPHYR_BT_HCI_SPI_CS_GPIOS_PIN
#define GPIO_CS_FLAGS DT_INST_0_ZEPHYR_BT_HCI_SPI_CS_GPIOS_FLAGS
#endif /* DT_INST_0_ZEPHYR_BT_HCI_SPI_CS_GPIOS_PIN */
/* Max SPI buffer length for transceive operations.
@ -201,22 +204,23 @@ static int configure_cs(void)
return -EIO;
}
/* Configure pin as output and set to active */
gpio_pin_configure(cs_dev, GPIO_CS_PIN,
GPIO_DIR_OUT | GPIO_PUD_PULL_UP);
gpio_pin_write(cs_dev, GPIO_CS_PIN, 1);
GPIO_OUTPUT_ACTIVE | GPIO_CS_FLAGS);
return 0;
}
static void kick_cs(void)
{
gpio_pin_write(cs_dev, GPIO_CS_PIN, 1);
gpio_pin_write(cs_dev, GPIO_CS_PIN, 0);
gpio_pin_set(cs_dev, GPIO_CS_PIN, 1);
gpio_pin_set(cs_dev, GPIO_CS_PIN, 0);
}
static void release_cs(void)
{
gpio_pin_write(cs_dev, GPIO_CS_PIN, 1);
gpio_pin_set(cs_dev, GPIO_CS_PIN, 1);
}
static bool irq_pin_high(void)
@ -480,16 +484,11 @@ static int bt_spi_open(void)
{
/* Configure RST pin and hold BLE in Reset */
gpio_pin_configure(rst_dev, GPIO_RESET_PIN,
GPIO_DIR_OUT | GPIO_PUD_PULL_UP);
gpio_pin_write(rst_dev, GPIO_RESET_PIN, 0);
GPIO_OUTPUT_ACTIVE | GPIO_RESET_FLAGS);
/* Configure IRQ pin and the IRQ call-back/handler */
gpio_pin_configure(irq_dev, GPIO_IRQ_PIN,
#if defined(CONFIG_BT_SPI_BLUENRG)
GPIO_PUD_PULL_DOWN |
#endif
GPIO_DIR_IN | GPIO_INT |
GPIO_INT_EDGE | GPIO_INT_ACTIVE_HIGH);
GPIO_INPUT | GPIO_IRQ_FLAGS);
gpio_init_callback(&gpio_cb, bt_spi_isr, BIT(GPIO_IRQ_PIN));
@ -497,9 +496,8 @@ static int bt_spi_open(void)
return -EINVAL;
}
if (gpio_pin_enable_callback(irq_dev, GPIO_IRQ_PIN)) {
return -EINVAL;
}
gpio_pin_interrupt_configure(irq_dev, GPIO_IRQ_PIN,
GPIO_INT_EDGE_TO_ACTIVE);
/* Start RX thread */
k_thread_create(&spi_rx_thread_data, spi_rx_stack,
@ -509,7 +507,7 @@ static int bt_spi_open(void)
0, K_NO_WAIT);
/* Take BLE out of reset */
gpio_pin_write(rst_dev, GPIO_RESET_PIN, 1);
gpio_pin_set(rst_dev, GPIO_RESET_PIN, 0);
/* Device will let us know when it's ready */
k_sem_take(&sem_initialised, K_FOREVER);