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/*
* Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _LPC32XX_UART_H
#define _LPC32XX_UART_H
#include <asm/types.h>
/* 14-clock UART Registers */
struct hsuart_regs {
union {
u32 rx; /* Receiver FIFO */
u32 tx; /* Transmitter FIFO */
};
u32 level; /* FIFO Level Register */
u32 iir; /* Interrupt ID Register */
u32 ctrl; /* Control Register */
u32 rate; /* Rate Control Register */
};
/* 14-clock UART Receiver FIFO Register bits */
#define HSUART_RX_BREAK (1 << 10)
#define HSUART_RX_ERROR (1 << 9)
#define HSUART_RX_EMPTY (1 << 8)
#define HSUART_RX_DATA (0xff << 0)
/* 14-clock UART Level Register bits */
#define HSUART_LEVEL_TX (0xff << 8)
#define HSUART_LEVEL_RX (0xff << 0)
/* 14-clock UART Interrupt Identification Register bits */
#define HSUART_IIR_TX_INT_SET (1 << 6)
#define HSUART_IIR_RX_OE (1 << 5)
#define HSUART_IIR_BRK (1 << 4)
#define HSUART_IIR_FE (1 << 3)
#define HSUART_IIR_RX_TIMEOUT (1 << 2)
#define HSUART_IIR_RX_TRIG (1 << 1)
#define HSUART_IIR_TX (1 << 0)
/* 14-clock UART Control Register bits */
#define HSUART_CTRL_HRTS_INV (1 << 21)
#define HSUART_CTRL_HRTS_TRIG_48 (0x3 << 19)
#define HSUART_CTRL_HRTS_TRIG_32 (0x2 << 19)
#define HSUART_CTRL_HRTS_TRIG_16 (0x1 << 19)
#define HSUART_CTRL_HRTS_TRIG_8 (0x0 << 19)
#define HSUART_CTRL_HRTS_EN (1 << 18)
#define HSUART_CTRL_TMO_16 (0x3 << 16)
#define HSUART_CTRL_TMO_8 (0x2 << 16)
#define HSUART_CTRL_TMO_4 (0x1 << 16)
#define HSUART_CTRL_TMO_DISABLED (0x0 << 16)
#define HSUART_CTRL_HCTS_INV (1 << 15)
#define HSUART_CTRL_HCTS_EN (1 << 14)
#define HSUART_CTRL_HSU_OFFSET(n) ((n) << 9)
#define HSUART_CTRL_HSU_BREAK (1 << 8)
#define HSUART_CTRL_HSU_ERR_INT_EN (1 << 7)
#define HSUART_CTRL_HSU_RX_INT_EN (1 << 6)
#define HSUART_CTRL_HSU_TX_INT_EN (1 << 5)
#define HSUART_CTRL_HSU_RX_TRIG_48 (0x5 << 2)
#define HSUART_CTRL_HSU_RX_TRIG_32 (0x4 << 2)
#define HSUART_CTRL_HSU_RX_TRIG_16 (0x3 << 2)
#define HSUART_CTRL_HSU_RX_TRIG_8 (0x2 << 2)
#define HSUART_CTRL_HSU_RX_TRIG_4 (0x1 << 2)
#define HSUART_CTRL_HSU_RX_TRIG_1 (0x0 << 2)
#define HSUART_CTRL_HSU_TX_TRIG_16 (0x3 << 0)
#define HSUART_CTRL_HSU_TX_TRIG_8 (0x2 << 0)
#define HSUART_CTRL_HSU_TX_TRIG_4 (0x1 << 0)
#define HSUART_CTRL_HSU_TX_TRIG_0 (0x0 << 0)
/* UART Control Registers */
struct uart_ctrl_regs {
u32 ctrl; /* Control Register */
u32 clkmode; /* Clock Mode Register */
u32 loop; /* Loopback Control Register */
};
/* UART Control Register bits */
#define UART_CTRL_UART3_MD_CTRL (1 << 11)
#define UART_CTRL_HDPX_INV (1 << 10)
#define UART_CTRL_HDPX_EN (1 << 9)
#define UART_CTRL_UART6_IRDA (1 << 5)
#define UART_CTRL_IR_TX6_INV (1 << 4)
#define UART_CTRL_IR_RX6_INV (1 << 3)
#define UART_CTRL_IR_RX_LENGTH (1 << 2)
#define UART_CTRL_IR_TX_LENGTH (1 << 1)
#define UART_CTRL_UART5_USB_MODE (1 << 0)
/* UART Clock Mode Register bits */
#define UART_CLKMODE_STATX(n) (1 << ((n) + 16))
#define UART_CLKMODE_STAT (1 << 14)
#define UART_CLKMODE_MASK(n) (0x3 << (2 * (n) - 2))
#define UART_CLKMODE_AUTO(n) (0x2 << (2 * (n) - 2))
#define UART_CLKMODE_ON(n) (0x1 << (2 * (n) - 2))
#define UART_CLKMODE_OFF(n) (0x0 << (2 * (n) - 2))
/* UART Loopback Control Register bits */
#define UART_LOOPBACK(n) (1 << ((n) - 1))
#endif /* _LPC32XX_UART_H */
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