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