1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  *  Atheros AR933X UART defines
4  *
5  *  Copyright (C) 2011 Gabor Juhos <juhosg@openwrt.org>
6  */
7 
8 #ifndef __AR933X_UART_H
9 #define __AR933X_UART_H
10 
11 #define AR933X_UART_REGS_SIZE		20
12 #define AR933X_UART_FIFO_SIZE		16
13 
14 #define AR933X_UART_DATA_REG		0x00
15 #define AR933X_UART_CS_REG		0x04
16 #define AR933X_UART_CLOCK_REG		0x08
17 #define AR933X_UART_INT_REG		0x0c
18 #define AR933X_UART_INT_EN_REG		0x10
19 
20 #define AR933X_UART_DATA_TX_RX_MASK	0xff
21 #define AR933X_UART_DATA_RX_CSR		BIT(8)
22 #define AR933X_UART_DATA_TX_CSR		BIT(9)
23 
24 #define AR933X_UART_CS_PARITY_S		0
25 #define AR933X_UART_CS_PARITY_M		0x3
26 #define	  AR933X_UART_CS_PARITY_NONE	0
27 #define	  AR933X_UART_CS_PARITY_ODD	2
28 #define	  AR933X_UART_CS_PARITY_EVEN	3
29 #define AR933X_UART_CS_IF_MODE_S	2
30 #define AR933X_UART_CS_IF_MODE_M	0x3
31 #define	  AR933X_UART_CS_IF_MODE_NONE	0
32 #define	  AR933X_UART_CS_IF_MODE_DTE	1
33 #define	  AR933X_UART_CS_IF_MODE_DCE	2
34 #define AR933X_UART_CS_FLOW_CTRL_S	4
35 #define AR933X_UART_CS_FLOW_CTRL_M	0x3
36 #define AR933X_UART_CS_DMA_EN		BIT(6)
37 #define AR933X_UART_CS_TX_READY_ORIDE	BIT(7)
38 #define AR933X_UART_CS_RX_READY_ORIDE	BIT(8)
39 #define AR933X_UART_CS_TX_READY		BIT(9)
40 #define AR933X_UART_CS_RX_BREAK		BIT(10)
41 #define AR933X_UART_CS_TX_BREAK		BIT(11)
42 #define AR933X_UART_CS_HOST_INT		BIT(12)
43 #define AR933X_UART_CS_HOST_INT_EN	BIT(13)
44 #define AR933X_UART_CS_TX_BUSY		BIT(14)
45 #define AR933X_UART_CS_RX_BUSY		BIT(15)
46 
47 #define AR933X_UART_CLOCK_STEP_M	0xffff
48 #define AR933X_UART_CLOCK_SCALE_M	0xfff
49 #define AR933X_UART_CLOCK_SCALE_S	16
50 #define AR933X_UART_CLOCK_STEP_M	0xffff
51 
52 #define AR933X_UART_INT_RX_VALID	BIT(0)
53 #define AR933X_UART_INT_TX_READY	BIT(1)
54 #define AR933X_UART_INT_RX_FRAMING_ERR	BIT(2)
55 #define AR933X_UART_INT_RX_OFLOW_ERR	BIT(3)
56 #define AR933X_UART_INT_TX_OFLOW_ERR	BIT(4)
57 #define AR933X_UART_INT_RX_PARITY_ERR	BIT(5)
58 #define AR933X_UART_INT_RX_BREAK_ON	BIT(6)
59 #define AR933X_UART_INT_RX_BREAK_OFF	BIT(7)
60 #define AR933X_UART_INT_RX_FULL		BIT(8)
61 #define AR933X_UART_INT_TX_EMPTY	BIT(9)
62 #define AR933X_UART_INT_ALLINTS		0x3ff
63 
64 #endif /* __AR933X_UART_H */
65