1 /*
2  * Copyright (c) Linaro 2018 Limited and Contributors. All rights reserved.
3  *
4  * SPDX-License-Identifier: BSD-3-Clause
5  */
6 #ifndef IMX_UART_H
7 #define IMX_UART_H
8 
9 #include <drivers/console.h>
10 
11 #define IMX_UART_RXD_OFFSET	0x00
12 #define IMX_UART_RXD_CHARRDY	BIT(15)
13 #define IMX_UART_RXD_ERR	BIT(14)
14 #define IMX_UART_RXD_OVERRUN	BIT(13)
15 #define IMX_UART_RXD_FRMERR	BIT(12)
16 #define IMX_UART_RXD_BRK	BIT(11)
17 #define IMX_UART_RXD_PRERR	BIT(10)
18 
19 #define IMX_UART_TXD_OFFSET	0x40
20 
21 #define IMX_UART_CR1_OFFSET	0x80
22 #define IMX_UART_CR1_ADEN	BIT(15)
23 #define IMX_UART_CR1_ADBR	BIT(14)
24 #define IMX_UART_CR1_TRDYEN	BIT(13)
25 #define IMX_UART_CR1_IDEN	BIT(12)
26 #define IMX_UART_CR1_RRDYEN	BIT(9)
27 #define IMX_UART_CR1_RXDMAEN	BIT(8)
28 #define IMX_UART_CR1_IREN	BIT(7)
29 #define IMX_UART_CR1_TXMPTYEN	BIT(6)
30 #define IMX_UART_CR1_RTSDEN	BIT(5)
31 #define IMX_UART_CR1_SNDBRK	BIT(4)
32 #define IMX_UART_CR1_TXDMAEN	BIT(3)
33 #define IMX_UART_CR1_ATDMAEN	BIT(2)
34 #define IMX_UART_CR1_DOZE	BIT(1)
35 #define IMX_UART_CR1_UARTEN	BIT(0)
36 
37 #define IMX_UART_CR2_OFFSET	0x84
38 #define IMX_UART_CR2_ESCI	BIT(15)
39 #define IMX_UART_CR2_IRTS	BIT(14)
40 #define IMX_UART_CR2_CTSC	BIT(13)
41 #define IMX_UART_CR2_CTS	BIT(12)
42 #define IMX_UART_CR2_ESCEN	BIT(11)
43 #define IMX_UART_CR2_PREN	BIT(8)
44 #define IMX_UART_CR2_PROE	BIT(7)
45 #define IMX_UART_CR2_STPB	BIT(6)
46 #define IMX_UART_CR2_WS		BIT(5)
47 #define IMX_UART_CR2_RTSEN	BIT(4)
48 #define IMX_UART_CR2_ATEN	BIT(3)
49 #define IMX_UART_CR2_TXEN	BIT(2)
50 #define IMX_UART_CR2_RXEN	BIT(1)
51 #define IMX_UART_CR2_SRST	BIT(0)
52 
53 #define IMX_UART_CR3_OFFSET	0x88
54 #define IMX_UART_CR3_DTREN	BIT(13)
55 #define IMX_UART_CR3_PARERREN	BIT(12)
56 #define IMX_UART_CR3_FARERREN	BIT(11)
57 #define IMX_UART_CR3_DSD	BIT(10)
58 #define IMX_UART_CR3_DCD	BIT(9)
59 #define IMX_UART_CR3_RI		BIT(8)
60 #define IMX_UART_CR3_ADNIMP	BIT(7)
61 #define IMX_UART_CR3_RXDSEN	BIT(6)
62 #define IMX_UART_CR3_AIRINTEN	BIT(5)
63 #define IMX_UART_CR3_AWAKEN	BIT(4)
64 #define IMX_UART_CR3_DTRDEN	BIT(3)
65 #define IMX_UART_CR3_RXDMUXSEL	BIT(2)
66 #define IMX_UART_CR3_INVT	BIT(1)
67 #define IMX_UART_CR3_ACIEN	BIT(0)
68 
69 #define IMX_UART_CR4_OFFSET	0x8c
70 #define IMX_UART_CR4_INVR	BIT(9)
71 #define IMX_UART_CR4_ENIRI	BIT(8)
72 #define IMX_UART_CR4_WKEN	BIT(7)
73 #define IMX_UART_CR4_IDDMAEN	BIT(6)
74 #define IMX_UART_CR4_IRSC	BIT(5)
75 #define IMX_UART_CR4_LPBYP	BIT(4)
76 #define IMX_UART_CR4_TCEN	BIT(3)
77 #define IMX_UART_CR4_BKEN	BIT(2)
78 #define IMX_UART_CR4_OREN	BIT(1)
79 #define IMX_UART_CR4_DREN	BIT(0)
80 
81 #define IMX_UART_FCR_OFFSET	0x90
82 #define IMX_UART_FCR_TXTL_MASK	(BIT(15) | BIT(14) | BIT(13) | BIT(12) |\
83 				 BIT(11) | BIT(10))
84 #define IMX_UART_FCR_TXTL(x)	((x) << 10)
85 #define IMX_UART_FCR_RFDIV_MASK	(BIT(9) | BIT(8) | BIT(7))
86 #define IMX_UART_FCR_RFDIV7	(BIT(9) | BIT(8))
87 #define IMX_UART_FCR_RFDIV1	(BIT(9) | BIT(7))
88 #define IMX_UART_FCR_RFDIV2	BIT(9)
89 #define IMX_UART_FCR_RFDIV3	(BIT(8) | BIT(7))
90 #define IMX_UART_FCR_RFDIV4	BIT(8)
91 #define IMX_UART_FCR_RFDIV5	BIT(7)
92 #define IMX_UART_FCR_RFDIV6	0
93 #define IMX_UART_FCR_DCEDTE	BIT(6)
94 #define IMX_UART_FCR_RXTL_MASK	(BIT(5) | BIT(4) | BIT(3) | BIT(2) |\
95 				 BIT(1) | BIT(0))
96 #define IMX_UART_FCR_RXTL(x)	x
97 
98 #define IMX_UART_STAT1_OFFSET	0x94
99 #define IMX_UART_STAT1_PARITYERR	BIT(15)
100 #define IMX_UART_STAT1_RTSS	BIT(14)
101 #define IMX_UART_STAT1_TRDY	BIT(13)
102 #define IMX_UART_STAT1_RTSD	BIT(12)
103 #define IMX_UART_STAT1_ESCF	BIT(11)
104 #define IMX_UART_STAT1_FRAMEERR	BIT(10)
105 #define IMX_UART_STAT1_RRDY	BIT(9)
106 #define IMX_UART_STAT1_AGTIM	BIT(8)
107 #define IMX_UART_STAT1_DTRD	BIT(7)
108 #define IMX_UART_STAT1_RXDS	BIT(6)
109 #define IMX_UART_STAT1_AIRINT	BIT(5)
110 #define IMX_UART_STAT1_AWAKE	BIT(4)
111 #define IMX_UART_STAT1_SAD	BIT(3)
112 
113 #define IMX_UART_STAT2_OFFSET	0x98
114 #define IMX_UART_STAT2_ADET	BIT(15)
115 #define IMX_UART_STAT2_TXFE	BIT(14)
116 #define IMX_UART_STAT2_DTRF	BIT(13)
117 #define IMX_UART_STAT2_IDLE	BIT(12)
118 #define IMX_UART_STAT2_ACST	BIT(11)
119 #define IMX_UART_STAT2_RIDELT	BIT(10)
120 #define IMX_UART_STAT2_RIIN	BIT(9)
121 #define IMX_UART_STAT2_IRINT	BIT(8)
122 #define IMX_UART_STAT2_WAKE	BIT(7)
123 #define IMX_UART_STAT2_DCDDELT	BIT(6)
124 #define IMX_UART_STAT2_DCDIN	BIT(5)
125 #define IMX_UART_STAT2_RTSF	BIT(4)
126 #define IMX_UART_STAT2_TXDC	BIT(3)
127 #define IMX_UART_STAT2_BRCD	BIT(2)
128 #define IMX_UART_STAT2_ORE	BIT(1)
129 #define IMX_UART_STAT2_RCR	BIT(0)
130 
131 #define IMX_UART_ESC_OFFSET	0x9c
132 
133 #define IMX_UART_TIM_OFFSET	0xa0
134 
135 #define IMX_UART_BIR_OFFSET	0xa4
136 
137 #define IMX_UART_BMR_OFFSET	0xa8
138 
139 #define IMX_UART_BRC_OFFSET	0xac
140 
141 #define IMX_UART_ONEMS_OFFSET	0xb0
142 
143 #define IMX_UART_TS_OFFSET	0xb4
144 #define IMX_UART_TS_FRCPERR	BIT(13)
145 #define IMX_UART_TS_LOOP	BIT(12)
146 #define IMX_UART_TS_DBGEN	BIT(11)
147 #define IMX_UART_TS_LOOPIR	BIT(10)
148 #define IMX_UART_TS_RXDBG	BIT(9)
149 #define IMX_UART_TS_TXEMPTY	BIT(6)
150 #define IMX_UART_TS_RXEMPTY	BIT(5)
151 #define IMX_UART_TS_TXFULL	BIT(4)
152 #define IMX_UART_TS_RXFULL	BIT(3)
153 #define IMX_UART_TS_SOFTRST	BIT(0)
154 
155 #ifndef __ASSEMBLER__
156 
157 int console_imx_uart_register(uintptr_t baseaddr,
158 			      uint32_t clock,
159 			      uint32_t baud,
160 			      console_t *console);
161 #endif /*__ASSEMBLER__*/
162 
163 #endif /* IMX_UART_H */
164