xref: /openbmc/linux/include/linux/serial_s3c.h (revision 72a43046)
1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  *  Internal header file for Samsung S3C2410 serial ports (UART0-2)
4  *
5  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
6  *
7  *  Additional defines, Copyright 2003 Simtec Electronics (linux@simtec.co.uk)
8  *
9  *  Adapted from:
10  *
11  *  Internal header file for MX1ADS serial ports (UART1 & 2)
12  *
13  *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
14  */
15 
16 #ifndef __ASM_ARM_REGS_SERIAL_H
17 #define __ASM_ARM_REGS_SERIAL_H
18 
19 #define S3C2410_URXH	  (0x24)
20 #define S3C2410_UTXH	  (0x20)
21 #define S3C2410_ULCON	  (0x00)
22 #define S3C2410_UCON	  (0x04)
23 #define S3C2410_UFCON	  (0x08)
24 #define S3C2410_UMCON	  (0x0C)
25 #define S3C2410_UBRDIV	  (0x28)
26 #define S3C2410_UTRSTAT	  (0x10)
27 #define S3C2410_UERSTAT	  (0x14)
28 #define S3C2410_UFSTAT	  (0x18)
29 #define S3C2410_UMSTAT	  (0x1C)
30 
31 #define S3C2410_LCON_CFGMASK	  ((0xF<<3)|(0x3))
32 
33 #define S3C2410_LCON_CS5	  (0x0)
34 #define S3C2410_LCON_CS6	  (0x1)
35 #define S3C2410_LCON_CS7	  (0x2)
36 #define S3C2410_LCON_CS8	  (0x3)
37 #define S3C2410_LCON_CSMASK	  (0x3)
38 
39 #define S3C2410_LCON_PNONE	  (0x0)
40 #define S3C2410_LCON_PEVEN	  (0x5 << 3)
41 #define S3C2410_LCON_PODD	  (0x4 << 3)
42 #define S3C2410_LCON_PMASK	  (0x7 << 3)
43 
44 #define S3C2410_LCON_STOPB	  (1<<2)
45 #define S3C2410_LCON_IRM          (1<<6)
46 
47 #define S3C2440_UCON_CLKMASK	  (3<<10)
48 #define S3C2440_UCON_CLKSHIFT	  (10)
49 #define S3C2440_UCON_PCLK	  (0<<10)
50 #define S3C2440_UCON_UCLK	  (1<<10)
51 #define S3C2440_UCON_PCLK2	  (2<<10)
52 #define S3C2440_UCON_FCLK	  (3<<10)
53 #define S3C2443_UCON_EPLL	  (3<<10)
54 
55 #define S3C6400_UCON_CLKMASK	(3<<10)
56 #define S3C6400_UCON_CLKSHIFT	(10)
57 #define S3C6400_UCON_PCLK	(0<<10)
58 #define S3C6400_UCON_PCLK2	(2<<10)
59 #define S3C6400_UCON_UCLK0	(1<<10)
60 #define S3C6400_UCON_UCLK1	(3<<10)
61 
62 #define S3C2440_UCON2_FCLK_EN	  (1<<15)
63 #define S3C2440_UCON0_DIVMASK	  (15 << 12)
64 #define S3C2440_UCON1_DIVMASK	  (15 << 12)
65 #define S3C2440_UCON2_DIVMASK	  (7 << 12)
66 #define S3C2440_UCON_DIVSHIFT	  (12)
67 
68 #define S3C2412_UCON_CLKMASK	(3<<10)
69 #define S3C2412_UCON_CLKSHIFT	(10)
70 #define S3C2412_UCON_UCLK	(1<<10)
71 #define S3C2412_UCON_USYSCLK	(3<<10)
72 #define S3C2412_UCON_PCLK	(0<<10)
73 #define S3C2412_UCON_PCLK2	(2<<10)
74 
75 #define S3C2410_UCON_CLKMASK	(1 << 10)
76 #define S3C2410_UCON_CLKSHIFT	(10)
77 #define S3C2410_UCON_UCLK	  (1<<10)
78 #define S3C2410_UCON_SBREAK	  (1<<4)
79 
80 #define S3C2410_UCON_TXILEVEL	  (1<<9)
81 #define S3C2410_UCON_RXILEVEL	  (1<<8)
82 #define S3C2410_UCON_TXIRQMODE	  (1<<2)
83 #define S3C2410_UCON_RXIRQMODE	  (1<<0)
84 #define S3C2410_UCON_RXFIFO_TOI	  (1<<7)
85 #define S3C2443_UCON_RXERR_IRQEN  (1<<6)
86 #define S3C2410_UCON_LOOPBACK	  (1<<5)
87 
88 #define S3C2410_UCON_DEFAULT	  (S3C2410_UCON_TXILEVEL  | \
89 				   S3C2410_UCON_RXILEVEL  | \
90 				   S3C2410_UCON_TXIRQMODE | \
91 				   S3C2410_UCON_RXIRQMODE | \
92 				   S3C2410_UCON_RXFIFO_TOI)
93 
94 #define S3C64XX_UCON_TXBURST_1          (0<<20)
95 #define S3C64XX_UCON_TXBURST_4          (1<<20)
96 #define S3C64XX_UCON_TXBURST_8          (2<<20)
97 #define S3C64XX_UCON_TXBURST_16         (3<<20)
98 #define S3C64XX_UCON_TXBURST_MASK       (0xf<<20)
99 #define S3C64XX_UCON_RXBURST_1          (0<<16)
100 #define S3C64XX_UCON_RXBURST_4          (1<<16)
101 #define S3C64XX_UCON_RXBURST_8          (2<<16)
102 #define S3C64XX_UCON_RXBURST_16         (3<<16)
103 #define S3C64XX_UCON_RXBURST_MASK       (0xf<<16)
104 #define S3C64XX_UCON_TIMEOUT_SHIFT      (12)
105 #define S3C64XX_UCON_TIMEOUT_MASK       (0xf<<12)
106 #define S3C64XX_UCON_EMPTYINT_EN        (1<<11)
107 #define S3C64XX_UCON_DMASUS_EN          (1<<10)
108 #define S3C64XX_UCON_TXINT_LEVEL        (1<<9)
109 #define S3C64XX_UCON_RXINT_LEVEL        (1<<8)
110 #define S3C64XX_UCON_TIMEOUT_EN         (1<<7)
111 #define S3C64XX_UCON_ERRINT_EN          (1<<6)
112 #define S3C64XX_UCON_TXMODE_DMA         (2<<2)
113 #define S3C64XX_UCON_TXMODE_CPU         (1<<2)
114 #define S3C64XX_UCON_TXMODE_MASK        (3<<2)
115 #define S3C64XX_UCON_RXMODE_DMA         (2<<0)
116 #define S3C64XX_UCON_RXMODE_CPU         (1<<0)
117 #define S3C64XX_UCON_RXMODE_MASK        (3<<0)
118 
119 #define S3C2410_UFCON_FIFOMODE	  (1<<0)
120 #define S3C2410_UFCON_TXTRIG0	  (0<<6)
121 #define S3C2410_UFCON_RXTRIG8	  (1<<4)
122 #define S3C2410_UFCON_RXTRIG12	  (2<<4)
123 
124 /* S3C2440 FIFO trigger levels */
125 #define S3C2440_UFCON_RXTRIG1	  (0<<4)
126 #define S3C2440_UFCON_RXTRIG8	  (1<<4)
127 #define S3C2440_UFCON_RXTRIG16	  (2<<4)
128 #define S3C2440_UFCON_RXTRIG32	  (3<<4)
129 
130 #define S3C2440_UFCON_TXTRIG0	  (0<<6)
131 #define S3C2440_UFCON_TXTRIG16	  (1<<6)
132 #define S3C2440_UFCON_TXTRIG32	  (2<<6)
133 #define S3C2440_UFCON_TXTRIG48	  (3<<6)
134 
135 #define S3C2410_UFCON_RESETBOTH	  (3<<1)
136 #define S3C2410_UFCON_RESETTX	  (1<<2)
137 #define S3C2410_UFCON_RESETRX	  (1<<1)
138 
139 #define S3C2410_UFCON_DEFAULT	  (S3C2410_UFCON_FIFOMODE | \
140 				   S3C2410_UFCON_TXTRIG0  | \
141 				   S3C2410_UFCON_RXTRIG8 )
142 
143 #define	S3C2410_UMCOM_AFC	  (1<<4)
144 #define	S3C2410_UMCOM_RTS_LOW	  (1<<0)
145 
146 #define S3C2412_UMCON_AFC_63	(0<<5)		/* same as s3c2443 */
147 #define S3C2412_UMCON_AFC_56	(1<<5)
148 #define S3C2412_UMCON_AFC_48	(2<<5)
149 #define S3C2412_UMCON_AFC_40	(3<<5)
150 #define S3C2412_UMCON_AFC_32	(4<<5)
151 #define S3C2412_UMCON_AFC_24	(5<<5)
152 #define S3C2412_UMCON_AFC_16	(6<<5)
153 #define S3C2412_UMCON_AFC_8	(7<<5)
154 
155 #define S3C2410_UFSTAT_TXFULL	  (1<<9)
156 #define S3C2410_UFSTAT_RXFULL	  (1<<8)
157 #define S3C2410_UFSTAT_TXMASK	  (15<<4)
158 #define S3C2410_UFSTAT_TXSHIFT	  (4)
159 #define S3C2410_UFSTAT_RXMASK	  (15<<0)
160 #define S3C2410_UFSTAT_RXSHIFT	  (0)
161 
162 /* UFSTAT S3C2443 same as S3C2440 */
163 #define S3C2440_UFSTAT_TXFULL	  (1<<14)
164 #define S3C2440_UFSTAT_RXFULL	  (1<<6)
165 #define S3C2440_UFSTAT_TXSHIFT	  (8)
166 #define S3C2440_UFSTAT_RXSHIFT	  (0)
167 #define S3C2440_UFSTAT_TXMASK	  (63<<8)
168 #define S3C2440_UFSTAT_RXMASK	  (63)
169 
170 #define S3C2410_UTRSTAT_TIMEOUT   (1<<3)
171 #define S3C2410_UTRSTAT_TXE	  (1<<2)
172 #define S3C2410_UTRSTAT_TXFE	  (1<<1)
173 #define S3C2410_UTRSTAT_RXDR	  (1<<0)
174 
175 #define S3C2410_UERSTAT_OVERRUN	  (1<<0)
176 #define S3C2410_UERSTAT_FRAME	  (1<<2)
177 #define S3C2410_UERSTAT_BREAK	  (1<<3)
178 #define S3C2443_UERSTAT_PARITY	  (1<<1)
179 
180 #define S3C2410_UERSTAT_ANY	  (S3C2410_UERSTAT_OVERRUN | \
181 				   S3C2410_UERSTAT_FRAME | \
182 				   S3C2410_UERSTAT_BREAK)
183 
184 #define S3C2410_UMSTAT_CTS	  (1<<0)
185 #define S3C2410_UMSTAT_DeltaCTS	  (1<<2)
186 
187 #define S3C2443_DIVSLOT		  (0x2C)
188 
189 /* S3C64XX interrupt registers. */
190 #define S3C64XX_UINTP		0x30
191 #define S3C64XX_UINTSP		0x34
192 #define S3C64XX_UINTM		0x38
193 
194 #define S3C64XX_UINTM_RXD	(0)
195 #define S3C64XX_UINTM_ERROR     (1)
196 #define S3C64XX_UINTM_TXD	(2)
197 #define S3C64XX_UINTM_RXD_MSK	(1 << S3C64XX_UINTM_RXD)
198 #define S3C64XX_UINTM_ERR_MSK   (1 << S3C64XX_UINTM_ERROR)
199 #define S3C64XX_UINTM_TXD_MSK	(1 << S3C64XX_UINTM_TXD)
200 
201 /* Following are specific to S5PV210 */
202 #define S5PV210_UCON_CLKMASK	(1<<10)
203 #define S5PV210_UCON_CLKSHIFT	(10)
204 #define S5PV210_UCON_PCLK	(0<<10)
205 #define S5PV210_UCON_UCLK	(1<<10)
206 
207 #define S5PV210_UFCON_TXTRIG0	(0<<8)
208 #define S5PV210_UFCON_TXTRIG4	(1<<8)
209 #define S5PV210_UFCON_TXTRIG8	(2<<8)
210 #define S5PV210_UFCON_TXTRIG16	(3<<8)
211 #define S5PV210_UFCON_TXTRIG32	(4<<8)
212 #define S5PV210_UFCON_TXTRIG64	(5<<8)
213 #define S5PV210_UFCON_TXTRIG128 (6<<8)
214 #define S5PV210_UFCON_TXTRIG256 (7<<8)
215 
216 #define S5PV210_UFCON_RXTRIG1	(0<<4)
217 #define S5PV210_UFCON_RXTRIG4	(1<<4)
218 #define S5PV210_UFCON_RXTRIG8	(2<<4)
219 #define S5PV210_UFCON_RXTRIG16	(3<<4)
220 #define S5PV210_UFCON_RXTRIG32	(4<<4)
221 #define S5PV210_UFCON_RXTRIG64	(5<<4)
222 #define S5PV210_UFCON_RXTRIG128	(6<<4)
223 #define S5PV210_UFCON_RXTRIG256	(7<<4)
224 
225 #define S5PV210_UFSTAT_TXFULL	(1<<24)
226 #define S5PV210_UFSTAT_RXFULL	(1<<8)
227 #define S5PV210_UFSTAT_TXMASK	(255<<16)
228 #define S5PV210_UFSTAT_TXSHIFT	(16)
229 #define S5PV210_UFSTAT_RXMASK	(255<<0)
230 #define S5PV210_UFSTAT_RXSHIFT	(0)
231 
232 #define S3C2410_UCON_CLKSEL0	(1 << 0)
233 #define S3C2410_UCON_CLKSEL1	(1 << 1)
234 #define S3C2410_UCON_CLKSEL2	(1 << 2)
235 #define S3C2410_UCON_CLKSEL3	(1 << 3)
236 
237 /* Default values for s5pv210 UCON and UFCON uart registers */
238 #define S5PV210_UCON_DEFAULT	(S3C2410_UCON_TXILEVEL |	\
239 				 S3C2410_UCON_RXILEVEL |	\
240 				 S3C2410_UCON_TXIRQMODE |	\
241 				 S3C2410_UCON_RXIRQMODE |	\
242 				 S3C2410_UCON_RXFIFO_TOI |	\
243 				 S3C2443_UCON_RXERR_IRQEN)
244 
245 #define S5PV210_UFCON_DEFAULT	(S3C2410_UFCON_FIFOMODE |	\
246 				 S5PV210_UFCON_TXTRIG4 |	\
247 				 S5PV210_UFCON_RXTRIG4)
248 
249 #define APPLE_S5L_UCON_RXTO_ENA		9
250 #define APPLE_S5L_UCON_RXTHRESH_ENA	12
251 #define APPLE_S5L_UCON_TXTHRESH_ENA	13
252 #define APPLE_S5L_UCON_RXTO_ENA_MSK	(1 << APPLE_S5L_UCON_RXTO_ENA)
253 #define APPLE_S5L_UCON_RXTHRESH_ENA_MSK	(1 << APPLE_S5L_UCON_RXTHRESH_ENA)
254 #define APPLE_S5L_UCON_TXTHRESH_ENA_MSK	(1 << APPLE_S5L_UCON_TXTHRESH_ENA)
255 
256 #define APPLE_S5L_UCON_DEFAULT		(S3C2410_UCON_TXIRQMODE | \
257 					 S3C2410_UCON_RXIRQMODE | \
258 					 S3C2410_UCON_RXFIFO_TOI)
259 #define APPLE_S5L_UCON_MASK		(APPLE_S5L_UCON_RXTO_ENA_MSK | \
260 					 APPLE_S5L_UCON_RXTHRESH_ENA_MSK | \
261 					 APPLE_S5L_UCON_TXTHRESH_ENA_MSK)
262 
263 #define APPLE_S5L_UTRSTAT_RXTHRESH	(1<<4)
264 #define APPLE_S5L_UTRSTAT_TXTHRESH	(1<<5)
265 #define APPLE_S5L_UTRSTAT_RXTO		(1<<9)
266 #define APPLE_S5L_UTRSTAT_ALL_FLAGS	(0x3f0)
267 
268 #ifndef __ASSEMBLY__
269 
270 #include <linux/serial_core.h>
271 
272 /* configuration structure for per-machine configurations for the
273  * serial port
274  *
275  * the pointer is setup by the machine specific initialisation from the
276  * arch/arm/mach-s3c/ directory.
277 */
278 
279 struct s3c2410_uartcfg {
280 	unsigned char	   hwport;	 /* hardware port number */
281 	unsigned char	   unused;
282 	unsigned short	   flags;
283 	upf_t		   uart_flags;	 /* default uart flags */
284 	unsigned int	   clk_sel;
285 
286 	unsigned int	   has_fracval;
287 
288 	unsigned long	   ucon;	 /* value of ucon for port */
289 	unsigned long	   ulcon;	 /* value of ulcon for port */
290 	unsigned long	   ufcon;	 /* value of ufcon for port */
291 };
292 
293 #endif /* __ASSEMBLY__ */
294 
295 #endif /* __ASM_ARM_REGS_SERIAL_H */
296 
297