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 */