drivers: serial: psoc6: Add interrupts support
Current Cypress PSoC-6 serial driver only works using polling mode. Add serial driver interrupt routines to allow use of interrupts. Signed-off-by: Gerson Fernando Budke <gerson.budke@atl-electronics.com>
This commit is contained in:
Gerson Fernando Budke
Kumar Gala
parent
e6cba8d9c8
commit
2bd130112a
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@ -8,5 +8,6 @@ config UART_PSOC6
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bool "PSoC-6 MCU SCB serial driver"
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depends on SOC_FAMILY_PSOC6
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select SERIAL_HAS_DRIVER
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select SERIAL_SUPPORT_INTERRUPT
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help
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This option enables the SCB[UART] driver for PSoC-6 SoC family.
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@ -22,6 +22,7 @@
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#include "cy_syslib.h"
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#include "cy_sysclk.h"
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#include "cy_scb_uart.h"
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#include "cy_sysint.h"
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/* UART desired baud rate is 115200 bps (Standard mode).
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* The UART baud rate = (SCB clock frequency / Oversample).
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@ -46,10 +47,24 @@
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struct cypress_psoc6_config {
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CySCB_Type *base;
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uint32_t periph_id;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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uart_irq_config_func_t irq_config_func;
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#endif
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uint32_t num_pins;
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struct soc_gpio_pin pins[];
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};
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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struct cypress_psoc6_data {
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uart_irq_callback_user_data_t irq_cb; /* Interrupt Callback */
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void *irq_cb_data; /* Interrupt Callback Arg */
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};
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#define DEV_DATA(dev) \
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((struct cypress_psoc6_data *const)(dev)->data)
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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/* Populate configuration structure */
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static const cy_stc_scb_uart_config_t uartConfig = {
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.uartMode = CY_SCB_UART_STANDARD,
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@ -111,6 +126,10 @@ static int uart_psoc6_init(const struct device *dev)
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(void) Cy_SCB_UART_Init(config->base, &uartConfig, NULL);
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Cy_SCB_UART_Enable(config->base);
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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config->irq_config_func(dev);
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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return 0;
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}
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@ -133,21 +152,214 @@ static void uart_psoc6_poll_out(const struct device *dev, unsigned char c)
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}
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}
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static int uart_psoc6_err_check(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t status = Cy_SCB_UART_GetRxFifoStatus(config->base);
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int errors = 0;
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if (status & CY_SCB_UART_RX_OVERFLOW) {
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errors |= UART_ERROR_OVERRUN;
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}
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if (status & CY_SCB_UART_RX_ERR_PARITY) {
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errors |= UART_ERROR_PARITY;
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}
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if (status & CY_SCB_UART_RX_ERR_FRAME) {
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errors |= UART_ERROR_FRAMING;
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}
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return errors;
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}
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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static int uart_psoc6_fifo_fill(const struct device *dev,
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const uint8_t *tx_data,
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int size)
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{
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const struct cypress_psoc6_config *config = dev->config;
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return Cy_SCB_UART_PutArray(config->base, (uint8_t *) tx_data, size);
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}
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static int uart_psoc6_fifo_read(const struct device *dev,
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uint8_t *rx_data,
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const int size)
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{
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const struct cypress_psoc6_config *config = dev->config;
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return Cy_SCB_UART_GetArray(config->base, rx_data, size);
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}
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static void uart_psoc6_irq_tx_enable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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Cy_SCB_SetTxInterruptMask(config->base, CY_SCB_UART_TX_EMPTY);
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}
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static void uart_psoc6_irq_tx_disable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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Cy_SCB_SetTxInterruptMask(config->base, 0);
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}
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static int uart_psoc6_irq_tx_ready(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t status = Cy_SCB_UART_GetTxFifoStatus(config->base);
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Cy_SCB_UART_ClearTxFifoStatus(config->base, CY_SCB_UART_TX_INTR_MASK);
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return (status & CY_SCB_UART_TX_NOT_FULL);
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}
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static int uart_psoc6_irq_tx_complete(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t status = Cy_SCB_UART_GetTxFifoStatus(config->base);
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Cy_SCB_UART_ClearTxFifoStatus(config->base, CY_SCB_UART_TX_INTR_MASK);
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return (status & CY_SCB_UART_TX_DONE);
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}
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static void uart_psoc6_irq_rx_enable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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Cy_SCB_SetRxInterruptMask(config->base, CY_SCB_UART_RX_NOT_EMPTY);
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}
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static void uart_psoc6_irq_rx_disable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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Cy_SCB_SetRxInterruptMask(config->base, 0);
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}
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static int uart_psoc6_irq_rx_ready(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t status = Cy_SCB_UART_GetRxFifoStatus(config->base);
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Cy_SCB_UART_ClearRxFifoStatus(config->base, CY_SCB_UART_RX_INTR_MASK);
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return (status & CY_SCB_UART_RX_NOT_EMPTY);
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}
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static void uart_psoc6_irq_err_enable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t intmask = Cy_SCB_GetRxInterruptMask(config->base) |
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CY_SCB_UART_RECEIVE_ERR;
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Cy_SCB_SetRxInterruptMask(config->base, intmask);
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}
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static void uart_psoc6_irq_err_disable(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t intmask = Cy_SCB_GetRxInterruptMask(config->base) &
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~(CY_SCB_UART_RECEIVE_ERR);
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Cy_SCB_SetRxInterruptMask(config->base, intmask);
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}
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static int uart_psoc6_irq_is_pending(const struct device *dev)
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{
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const struct cypress_psoc6_config *config = dev->config;
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uint32_t intcause = Cy_SCB_GetInterruptCause(config->base);
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return (intcause & (CY_SCB_TX_INTR | CY_SCB_RX_INTR));
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}
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static int uart_psoc6_irq_update(const struct device *dev)
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{
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ARG_UNUSED(dev);
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return 1;
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}
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static void uart_psoc6_irq_callback_set(const struct device *dev,
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uart_irq_callback_user_data_t cb,
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void *cb_data)
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{
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struct cypress_psoc6_data *const dev_data = DEV_DATA(dev);
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dev_data->irq_cb = cb;
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dev_data->irq_cb_data = cb_data;
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}
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static void uart_psoc6_isr(const struct device *dev)
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{
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struct cypress_psoc6_data *const dev_data = DEV_DATA(dev);
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if (dev_data->irq_cb) {
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dev_data->irq_cb(dev, dev_data->irq_cb_data);
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}
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}
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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static const struct uart_driver_api uart_psoc6_driver_api = {
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.poll_in = uart_psoc6_poll_in,
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.poll_out = uart_psoc6_poll_out,
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.err_check = uart_psoc6_err_check,
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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.fifo_fill = uart_psoc6_fifo_fill,
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.fifo_read = uart_psoc6_fifo_read,
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.irq_tx_enable = uart_psoc6_irq_tx_enable,
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.irq_tx_disable = uart_psoc6_irq_tx_disable,
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.irq_tx_ready = uart_psoc6_irq_tx_ready,
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.irq_rx_enable = uart_psoc6_irq_rx_enable,
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.irq_rx_disable = uart_psoc6_irq_rx_disable,
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.irq_tx_complete = uart_psoc6_irq_tx_complete,
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.irq_rx_ready = uart_psoc6_irq_rx_ready,
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.irq_err_enable = uart_psoc6_irq_err_enable,
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.irq_err_disable = uart_psoc6_irq_err_disable,
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.irq_is_pending = uart_psoc6_irq_is_pending,
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.irq_update = uart_psoc6_irq_update,
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.irq_callback_set = uart_psoc6_irq_callback_set,
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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};
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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#define CY_PSOC6_UART_IRQ_FUNC(n) \
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static void cy_psoc6_uart##n##_irq_config(const struct device *port) \
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{ \
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CY_PSOC6_DT_INST_NVIC_INSTALL(n, \
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uart_psoc6_isr); \
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};
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#define CY_PSOC6_UART_IRQ_SET_FUNC(n) \
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.irq_config_func = cy_psoc6_uart##n##_irq_config
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#define CY_PSOC6_UART_DECL_DATA(n) \
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static struct cypress_psoc6_data cy_psoc6_uart##n##_data = { 0 };
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#define CY_PSOC6_UART_DECL_DATA_PTR(n) &cy_psoc6_uart##n##_data
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#else
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#define CY_PSOC6_UART_IRQ_FUNC(n)
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#define CY_PSOC6_UART_IRQ_SET_FUNC(n)
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#define CY_PSOC6_UART_DECL_DATA(n)
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#define CY_PSOC6_UART_DECL_DATA_PTR(n) NULL
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#endif
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#define CY_PSOC6_UART_INIT(n) \
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CY_PSOC6_UART_DECL_DATA(n) \
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CY_PSOC6_UART_IRQ_FUNC(n) \
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static const struct cypress_psoc6_config cy_psoc6_uart##n##_config = { \
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.base = (CySCB_Type *)DT_INST_REG_ADDR(n), \
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.periph_id = DT_INST_PROP(n, peripheral_id), \
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\
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.num_pins = CY_PSOC6_DT_INST_NUM_PINS(n), \
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.pins = CY_PSOC6_DT_INST_PINS(n), \
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\
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CY_PSOC6_UART_IRQ_SET_FUNC(n) \
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}; \
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DEVICE_DT_INST_DEFINE(n, &uart_psoc6_init, device_pm_control_nop, \
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NULL, \
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CY_PSOC6_UART_DECL_DATA_PTR(n), \
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&cy_psoc6_uart##n##_config, PRE_KERNEL_1, \
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CONFIG_KERNEL_INIT_PRIORITY_DEVICE, \
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&uart_psoc6_driver_api);
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