2 * Copyright (C) 2011 by Vladimir Zapolskiy <vz@mleia.com>
4 * SPDX-License-Identifier: GPL-2.0+
7 #ifndef _LPC32XX_UART_H
8 #define _LPC32XX_UART_H
10 #include <asm/types.h>
12 /* 14-clock UART Registers */
15 u32 rx; /* Receiver FIFO */
16 u32 tx; /* Transmitter FIFO */
18 u32 level; /* FIFO Level Register */
19 u32 iir; /* Interrupt ID Register */
20 u32 ctrl; /* Control Register */
21 u32 rate; /* Rate Control Register */
24 /* 14-clock UART Receiver FIFO Register bits */
25 #define HSUART_RX_BREAK (1 << 10)
26 #define HSUART_RX_ERROR (1 << 9)
27 #define HSUART_RX_EMPTY (1 << 8)
28 #define HSUART_RX_DATA (0xff << 0)
30 /* 14-clock UART Level Register bits */
31 #define HSUART_LEVEL_TX (0xff << 8)
32 #define HSUART_LEVEL_RX (0xff << 0)
34 /* 14-clock UART Interrupt Identification Register bits */
35 #define HSUART_IIR_TX_INT_SET (1 << 6)
36 #define HSUART_IIR_RX_OE (1 << 5)
37 #define HSUART_IIR_BRK (1 << 4)
38 #define HSUART_IIR_FE (1 << 3)
39 #define HSUART_IIR_RX_TIMEOUT (1 << 2)
40 #define HSUART_IIR_RX_TRIG (1 << 1)
41 #define HSUART_IIR_TX (1 << 0)
43 /* 14-clock UART Control Register bits */
44 #define HSUART_CTRL_HRTS_INV (1 << 21)
45 #define HSUART_CTRL_HRTS_TRIG_48 (0x3 << 19)
46 #define HSUART_CTRL_HRTS_TRIG_32 (0x2 << 19)
47 #define HSUART_CTRL_HRTS_TRIG_16 (0x1 << 19)
48 #define HSUART_CTRL_HRTS_TRIG_8 (0x0 << 19)
49 #define HSUART_CTRL_HRTS_EN (1 << 18)
50 #define HSUART_CTRL_TMO_16 (0x3 << 16)
51 #define HSUART_CTRL_TMO_8 (0x2 << 16)
52 #define HSUART_CTRL_TMO_4 (0x1 << 16)
53 #define HSUART_CTRL_TMO_DISABLED (0x0 << 16)
54 #define HSUART_CTRL_HCTS_INV (1 << 15)
55 #define HSUART_CTRL_HCTS_EN (1 << 14)
56 #define HSUART_CTRL_HSU_OFFSET(n) ((n) << 9)
57 #define HSUART_CTRL_HSU_BREAK (1 << 8)
58 #define HSUART_CTRL_HSU_ERR_INT_EN (1 << 7)
59 #define HSUART_CTRL_HSU_RX_INT_EN (1 << 6)
60 #define HSUART_CTRL_HSU_TX_INT_EN (1 << 5)
61 #define HSUART_CTRL_HSU_RX_TRIG_48 (0x5 << 2)
62 #define HSUART_CTRL_HSU_RX_TRIG_32 (0x4 << 2)
63 #define HSUART_CTRL_HSU_RX_TRIG_16 (0x3 << 2)
64 #define HSUART_CTRL_HSU_RX_TRIG_8 (0x2 << 2)
65 #define HSUART_CTRL_HSU_RX_TRIG_4 (0x1 << 2)
66 #define HSUART_CTRL_HSU_RX_TRIG_1 (0x0 << 2)
67 #define HSUART_CTRL_HSU_TX_TRIG_16 (0x3 << 0)
68 #define HSUART_CTRL_HSU_TX_TRIG_8 (0x2 << 0)
69 #define HSUART_CTRL_HSU_TX_TRIG_4 (0x1 << 0)
70 #define HSUART_CTRL_HSU_TX_TRIG_0 (0x0 << 0)
72 /* UART Control Registers */
73 struct uart_ctrl_regs {
74 u32 ctrl; /* Control Register */
75 u32 clkmode; /* Clock Mode Register */
76 u32 loop; /* Loopback Control Register */
79 /* UART Control Register bits */
80 #define UART_CTRL_UART3_MD_CTRL (1 << 11)
81 #define UART_CTRL_HDPX_INV (1 << 10)
82 #define UART_CTRL_HDPX_EN (1 << 9)
83 #define UART_CTRL_UART6_IRDA (1 << 5)
84 #define UART_CTRL_IR_TX6_INV (1 << 4)
85 #define UART_CTRL_IR_RX6_INV (1 << 3)
86 #define UART_CTRL_IR_RX_LENGTH (1 << 2)
87 #define UART_CTRL_IR_TX_LENGTH (1 << 1)
88 #define UART_CTRL_UART5_USB_MODE (1 << 0)
90 /* UART Clock Mode Register bits */
91 #define UART_CLKMODE_STATX(n) (1 << ((n) + 16))
92 #define UART_CLKMODE_STAT (1 << 14)
93 #define UART_CLKMODE_MASK(n) (0x3 << (2 * (n) - 2))
94 #define UART_CLKMODE_AUTO(n) (0x2 << (2 * (n) - 2))
95 #define UART_CLKMODE_ON(n) (0x1 << (2 * (n) - 2))
96 #define UART_CLKMODE_OFF(n) (0x0 << (2 * (n) - 2))
98 /* UART Loopback Control Register bits */
99 #define UART_LOOPBACK(n) (1 << ((n) - 1))
101 #endif /* _LPC32XX_UART_H */