222 lines
8.3 KiB
C
222 lines
8.3 KiB
C
/*
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* Copyright (c) 2020, Seagate Technology LLC
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef ZEPHYR_DRIVERS_SERIAL_UART_LPC11U6X_H_
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#define ZEPHYR_DRIVERS_SERIAL_UART_LPC11U6X_H_
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#define LPC11U6X_UART0_CLK 14745600
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#define LPC11U6X_UART0_LCR_WLS_5BITS 0
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#define LPC11U6X_UART0_LCR_WLS_6BITS 1
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#define LPC11U6X_UART0_LCR_WLS_7BITS 2
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#define LPC11U6X_UART0_LCR_WLS_8BITS 3
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#define LPC11U6X_UART0_LCR_STOP_1BIT (0 << 2)
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#define LPC11U6X_UART0_LCR_STOP_2BIT (1 << 2)
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#define LPC11U6X_UART0_LCR_PARTIY_ENABLE (1 << 3)
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#define LPC11U6X_UART0_LCR_PARTIY_ODD (0 << 4)
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#define LPC11U6X_UART0_LCR_PARTIY_EVEN (1 << 4)
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#define LPC11U6X_UART0_LCR_DLAB (1 << 7)
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#define LPC11U6X_UART0_FCR_FIFO_EN (1 << 0)
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#define LPC11U6X_UART0_LSR_RDR (1 << 0)
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#define LPC11U6X_UART0_LSR_OE (1 << 1)
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#define LPC11U6X_UART0_LSR_PE (1 << 2)
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#define LPC11U6X_UART0_LSR_FE (1 << 3)
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#define LPC11U6X_UART0_LSR_BI (1 << 4)
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#define LPC11U6X_UART0_LSR_THRE (1 << 5)
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#define LPC11U6X_UART0_LSR_TEMT (1 << 6)
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#define LPC11U6X_UART0_LSR_RXFE (1 << 7)
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#define LPC11U6X_UART0_IER_RBRINTEN (1 << 0)
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#define LPC11U6X_UART0_IER_THREINTEN (1 << 1)
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#define LPC11U6X_UART0_IER_RLSINTEN (1 << 2)
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#define LPC11U6X_UART0_IER_MASK (0x30F)
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#define LPC11U6X_UART0_IIR_STATUS (0x1 << 0)
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#define LPC11U6X_UART0_IIR_INTID(x) (((x) >> 1) & 0x7)
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#define LPC11U6X_UART0_IIR_INTID_RLS 0x3
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#define LPC11U6X_UART0_IIR_INTID_RDA 0x2
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#define LPC11U6X_UART0_IIR_INTID_CTI 0x6
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#define LPC11U6X_UART0_IIR_INTID_THRE 0x1
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#define LPC11U6X_UART0_FIFO_SIZE 16
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#define LPC11U6X_UARTX_CFG_ENABLE (0x1 << 0)
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#define LPC11U6X_UARTX_CFG_DATALEN_7BIT (0x0 << 2)
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#define LPC11U6X_UARTX_CFG_DATALEN_8BIT (0x1 << 2)
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#define LPC11U6X_UARTX_CFG_DATALEN_9BIT (0x2 << 2)
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#define LPC11U6X_UARTX_CFG_PARITY_NONE (0x0 << 4)
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#define LPC11U6X_UARTX_CFG_PARITY_EVEN (0x2 << 4)
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#define LPC11U6X_UARTX_CFG_PARITY_ODD (0x3 << 4)
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#define LPC11U6X_UARTX_CFG_STOP_1BIT (0x0 << 6)
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#define LPC11U6X_UARTX_CFG_STOP_2BIT (0x1 << 6)
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#define LPC11U6X_UARTX_CFG_MASK (0x00FCDAFD)
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#define LPC11U6X_UARTX_STAT_RXRDY (1 << 0)
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#define LPC11U6X_UARTX_STAT_TXRDY (1 << 2)
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#define LPC11U6X_UARTX_STAT_TXIDLE (1 << 3)
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#define LPC11U6X_UARTX_STAT_OVERRUNINT (1 << 8)
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#define LPC11U6X_UARTX_STAT_FRAMERRINT (1 << 13)
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#define LPC11U6X_UARTX_STAT_PARITYERRINT (1 << 14)
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#define LPC11U6X_UARTX_BRG_MASK (0xFFFF)
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#define LPC11U6X_UARTX_INT_EN_SET_RXRDYEN (1 << 0)
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#define LPC11U6X_UARTX_INT_EN_SET_TXRDYEN (1 << 2)
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#define LPC11U6X_UARTX_INT_EN_SET_OVERRUNEN (1 << 8)
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#define LPC11U6X_UARTX_INT_EN_SET_FRAMERREN (1 << 13)
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#define LPC11U6X_UARTX_INT_EN_SET_PARITYERREN (1 << 14)
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#define LPC11U6X_UARTX_INT_EN_SET_MASK (0x0001F96D)
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#define LPC11U6X_UARTX_INT_EN_CLR_RXRDYCLR (1 << 0)
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#define LPC11U6X_UARTX_INT_EN_CLR_TXRDYCLR (1 << 2)
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#define LPC11U6X_UARTX_INT_EN_CLR_OVERRUNCLR (1 << 8)
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#define LPC11U6X_UARTX_INT_EN_CLR_FRAMERRCLR (1 << 13)
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#define LPC11U6X_UARTX_INT_EN_CLR_PARITYERRCLR (1 << 14)
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#define LPC11U6X_UARTX_INT_STAT_RXRDY (1 << 0)
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#define LPC11U6X_UARTX_INT_STAT_TXRDY (1 << 2)
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#define LPC11U6X_UARTX_INT_STAT_OVERRUN (1 << 8)
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#define LPC11U6X_UARTX_INT_STAT_FRAMERR (1 << 13)
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#define LPC11U6X_UARTX_INT_STAT_PARITYERR (1 << 14)
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#define LPC11U6X_UARTX_DEVICE_PER_IRQ 2
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struct lpc11u6x_uart0_regs {
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union {
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volatile const uint32_t rbr; /* RX buffer (RO) */
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volatile uint32_t thr; /* TX buffer (WO) */
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volatile uint32_t dll; /* Divisor latch LSB */
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};
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union {
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volatile uint32_t dlm; /* Divisor latch MSB */
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volatile uint32_t ier; /* Interrupt enable */
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};
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union {
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volatile uint32_t iir; /* Interrupt ID */
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volatile uint32_t fcr; /* FIFO Control */
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};
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volatile uint32_t lcr; /* Line Control */
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volatile uint32_t mcr; /* Modem Control */
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volatile uint32_t lsr; /* Line Status */
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volatile uint32_t msr; /* Modem Status */
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volatile uint32_t scr; /* Scratch pad */
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volatile uint32_t acr; /* Auto-baud Control */
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volatile uint32_t icr; /* IrDA Control */
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volatile uint32_t fdr; /* Fractional Divider */
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volatile uint32_t osr; /* Oversampling register */
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volatile uint32_t ter; /* Transmit enable */
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volatile uint32_t reserved1[3];
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volatile uint32_t hden; /* Half duplex */
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volatile uint32_t reserved2;
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volatile uint32_t sci_ctrl; /* Smart card interface */
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volatile uint32_t rs485_ctrl; /* RS-485 control */
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volatile uint32_t rs485_addr_match; /* RS-485 address match */
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volatile uint32_t rs485_dly; /* RS-485 delay direction control
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* delay
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*/
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volatile uint32_t sync_ctrl; /* Synchronous mode control */
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};
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struct lpc11u6x_uart0_config {
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struct lpc11u6x_uart0_regs *uart0;
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const char *clock_drv_name;
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const char *rx_pinmux_drv_name;
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const char *tx_pinmux_drv_name;
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uint32_t baudrate;
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uint32_t clkid;
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uint8_t rx_pin;
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uint8_t rx_func;
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uint8_t tx_pin;
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uint8_t tx_func;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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void (*irq_config_func)(const struct device *dev);
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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};
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struct lpc11u6x_uart0_data {
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uint32_t baudrate;
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uint8_t parity;
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uint8_t stop_bits;
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uint8_t data_bits;
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uint8_t flow_ctrl;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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uart_irq_callback_user_data_t cb;
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void *cb_data;
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uint32_t cached_iir;
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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};
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struct lpc11u6x_uartx_regs {
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volatile uint32_t cfg; /* Configuration register */
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volatile uint32_t ctl; /* Control register */
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volatile uint32_t stat; /* Status register */
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volatile uint32_t int_en_set; /* Interrupt enable and set */
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volatile uint32_t int_en_clr; /* Interrupt enable clear */
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volatile const uint32_t rx_dat; /* Receiver data */
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volatile const uint32_t rx_dat_stat; /* Receiver data status */
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volatile uint32_t tx_dat; /* Transmit data */
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volatile uint32_t brg; /* Baud rate generator */
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volatile const uint32_t int_stat; /* Interrupt status */
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volatile uint32_t osr; /* Oversample selection */
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volatile uint32_t addr; /* Address regiser*/
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};
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struct lpc11u6x_uartx_config {
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struct lpc11u6x_uartx_regs *base;
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const char *clock_drv_name;
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const char *rx_pinmux_drv_name;
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const char *tx_pinmux_drv_name;
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uint32_t baudrate;
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uint32_t clkid;
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uint8_t rx_pin;
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uint8_t rx_func;
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uint8_t tx_pin;
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uint8_t tx_func;
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};
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struct lpc11u6x_uartx_data {
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uint32_t baudrate;
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uint8_t parity;
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uint8_t stop_bits;
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uint8_t data_bits;
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uint8_t flow_ctrl;
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#ifdef CONFIG_UART_INTERRUPT_DRIVEN
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uart_irq_callback_user_data_t cb;
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void *cb_data;
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN */
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};
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/* Since UART1 and UART4 share the same IRQ (as well as UART2 and UART3),
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* we need to give the ISR a way to know all the devices that should be
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* notified when said IRQ is raied
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*/
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struct lpc11u6x_uartx_shared_irq {
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const struct device *devices[LPC11U6X_UARTX_DEVICE_PER_IRQ];
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};
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#if CONFIG_UART_INTERRUPT_DRIVEN && \
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(DT_NODE_HAS_STATUS(DT_NODELABEL(uart1), okay) || \
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DT_NODE_HAS_STATUS(DT_NODELABEL(uart4), okay))
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static void lpc11u6x_uartx_isr_config_1(const struct device *dev);
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN &&
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* (DT_NODE_HAS_STATUS(DT_NODELABEL(uart2), okay) ||
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* DT_NODE_HAS_STATUS(DT_NODELABEL(uart3), okay))
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*/
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#if CONFIG_UART_INTERRUPT_DRIVEN && \
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(DT_NODE_HAS_STATUS(DT_NODELABEL(uart2), okay) || \
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DT_NODE_HAS_STATUS(DT_NODELABEL(uart3), okay))
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static void lpc11u6x_uartx_isr_config_2(const struct device *dev);
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#endif /* CONFIG_UART_INTERRUPT_DRIVEN &&
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* (DT_NODE_HAS_STATUS(DT_NODELABEL(uart2), okay) ||
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* DT_NODE_HAS_STATUS(DT_NODELABEL(uart3), okay))
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*/
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#endif /* ZEPHYR_DRIVERS_SERIAL_UART_LPC11U6X_H_ */
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