[u-boot.git] / include / ns16550.h

/*
 * NS16550 Serial Port
 * originally from linux source (arch/ppc/boot/ns16550.h)
 * modified slightly to
 * have addresses as offsets from CFG_ISA_BASE
 * added a few more definitions
 * added prototypes for ns16550.c
 * reduced no of com ports to 2
 * modifications (c) Rob Taylor, Flying Pig Systems. 2000.
 * 
 * added support for port on 64-bit bus
 * by Richard Danter ([email protected]), (C) 2005 Wind River Systems
 */

#if (CFG_NS16550_REG_SIZE == 1)
struct NS16550 {
	unsigned char rbr;		/* 0 */
	unsigned char ier;		/* 1 */
	unsigned char fcr;		/* 2 */
	unsigned char lcr;		/* 3 */
	unsigned char mcr;		/* 4 */
	unsigned char lsr;		/* 5 */
	unsigned char msr;		/* 6 */
	unsigned char scr;		/* 7 */
#if defined(CONFIG_OMAP730)
	unsigned char mdr1;		/* 8 */
	unsigned char reg9;		/* 9 */
	unsigned char regA;		/* A */
	unsigned char regB;		/* B */
	unsigned char regC;		/* C */
	unsigned char regD;		/* D */
	unsigned char regE;		/* E */
	unsigned char regF;		/* F */
	unsigned char reg10;		/* 10 */
	unsigned char ssr;		/* 11*/
#endif
} __attribute__ ((packed));
#elif (CFG_NS16550_REG_SIZE == 2)
struct NS16550 {
	unsigned short rbr;		/* 0 */
	unsigned short ier;		/* 1 */
	unsigned short fcr;		/* 2 */
	unsigned short lcr;		/* 3 */
	unsigned short mcr;		/* 4 */
	unsigned short lsr;		/* 5 */
	unsigned short msr;		/* 6 */
	unsigned short scr;		/* 7 */
} __attribute__ ((packed));
#elif (CFG_NS16550_REG_SIZE == 4)
struct NS16550 {
	unsigned long rbr;		/* 0 r  */
	unsigned long ier;		/* 1 rw */
	unsigned long fcr;		/* 2 w  */
	unsigned long lcr;		/* 3 rw */
	unsigned long mcr;		/* 4 rw */
	unsigned long lsr;		/* 5 r  */
	unsigned long msr;		/* 6 r  */
	unsigned long scr;		/* 7 rw */
}; /* No need to pack an already aligned struct */
#elif (CFG_NS16550_REG_SIZE == -4)
struct NS16550 {
	unsigned char rbr;		/* 0 */
	int pad1:24;
	unsigned char ier;		/* 1 */
	int pad2:24;
	unsigned char fcr;		/* 2 */
	int pad3:24;
	unsigned char lcr;		/* 3 */
	int pad4:24;
	unsigned char mcr;		/* 4 */
	int pad5:24;
	unsigned char lsr;		/* 5 */
	int pad6:24;
	unsigned char msr;		/* 6 */
	int pad7:24;
	unsigned char scr;		/* 7 */
	int pad8:24;
#if defined(CONFIG_OMAP)
	unsigned char mdr1;		/* mode select reset TL16C750*/
#endif
#ifdef CONFIG_OMAP1510
	int pad9:24;
	unsigned long pad[10];
	unsigned char osc_12m_sel;
	int pad10:24;
#endif
} __attribute__ ((packed));
#elif (CFG_NS16550_REG_SIZE == -8)
struct NS16550 {
	unsigned char rbr;		/* 0 */
	unsigned char pad0[7];
	unsigned char ier;		/* 1 */
	unsigned char pad1[7];
	unsigned char fcr;		/* 2 */
	unsigned char pad2[7];
	unsigned char lcr;		/* 3 */
	unsigned char pad3[7];
	unsigned char mcr;		/* 4 */
	unsigned char pad4[7];
	unsigned char lsr;		/* 5 */
	unsigned char pad5[7];
	unsigned char msr;		/* 6 */
	unsigned char pad6[7];
	unsigned char scr;		/* 7 */
	unsigned char pad7[7];
} __attribute__ ((packed));
#else
#error "Please define NS16550 registers size."
#endif

#define thr rbr
#define iir fcr
#define dll rbr
#define dlm ier

typedef volatile struct NS16550 *NS16550_t;

#define FCR_FIFO_EN     0x01		/* Fifo enable */
#define FCR_RXSR        0x02		/* Receiver soft reset */
#define FCR_TXSR        0x04		/* Transmitter soft reset */

#define MCR_DTR         0x01
#define MCR_RTS         0x02
#define MCR_DMA_EN      0x04
#define MCR_TX_DFR      0x08

#define LCR_WLS_MSK	0x03		/* character length select mask */
#define LCR_WLS_5	0x00		/* 5 bit character length */
#define LCR_WLS_6	0x01		/* 6 bit character length */
#define LCR_WLS_7	0x02		/* 7 bit character length */
#define LCR_WLS_8	0x03		/* 8 bit character length */
#define LCR_STB		0x04		/* Number of stop Bits, off = 1, on = 1.5 or 2) */
#define LCR_PEN		0x08		/* Parity eneble */
#define LCR_EPS		0x10		/* Even Parity Select */
#define LCR_STKP	0x20		/* Stick Parity */
#define LCR_SBRK	0x40		/* Set Break */
#define LCR_BKSE	0x80		/* Bank select enable */

#define LSR_DR		0x01		/* Data ready */
#define LSR_OE		0x02		/* Overrun */
#define LSR_PE		0x04		/* Parity error */
#define LSR_FE		0x08		/* Framing error */
#define LSR_BI		0x10		/* Break */
#define LSR_THRE	0x20		/* Xmit holding register empty */
#define LSR_TEMT	0x40		/* Xmitter empty */
#define LSR_ERR		0x80		/* Error */

#ifdef CONFIG_OMAP1510
#define OSC_12M_SEL	0x01		/* selects 6.5 * current clk div */
#endif

/* useful defaults for LCR */
#define LCR_8N1		0x03

void	NS16550_init   (NS16550_t com_port, int baud_divisor);
void	NS16550_putc   (NS16550_t com_port, char c);
char	NS16550_getc   (NS16550_t com_port);
int	NS16550_tstc   (NS16550_t com_port);
void	NS16550_reinit (NS16550_t com_port, int baud_divisor);
Commit	Line	Data
717b5aad WD	1	/*
	2	* NS16550 Serial Port
	3	* originally from linux source (arch/ppc/boot/ns16550.h)
	4	* modified slightly to
	5	* have addresses as offsets from CFG_ISA_BASE
	6	* added a few more definitions
	7	* added prototypes for ns16550.c
	8	* reduced no of com ports to 2
	9	* modifications (c) Rob Taylor, Flying Pig Systems. 2000.
f5e0d039 HS	10	*
	11	* added support for port on 64-bit bus
	12	* by Richard Danter ([email protected]), (C) 2005 Wind River Systems
717b5aad WD	13	*/
	14
	15	#if (CFG_NS16550_REG_SIZE == 1)
	16	struct NS16550 {
	17	unsigned char rbr; /* 0 */
	18	unsigned char ier; /* 1 */
	19	unsigned char fcr; /* 2 */
	20	unsigned char lcr; /* 3 */
	21	unsigned char mcr; /* 4 */
	22	unsigned char lsr; /* 5 */
	23	unsigned char msr; /* 6 */
	24	unsigned char scr; /* 7 */
a56bd922 WD	25	#if defined(CONFIG_OMAP730)
	26	unsigned char mdr1; /* 8 */
	27	unsigned char reg9; /* 9 */
	28	unsigned char regA; /* A */
	29	unsigned char regB; /* B */
	30	unsigned char regC; /* C */
	31	unsigned char regD; /* D */
	32	unsigned char regE; /* E */
	33	unsigned char regF; /* F */
	34	unsigned char reg10; /* 10 */
	35	unsigned char ssr; /* 11*/
	36	#endif
717b5aad WD	37	} __attribute__ ((packed));
	38	#elif (CFG_NS16550_REG_SIZE == 2)
	39	struct NS16550 {
	40	unsigned short rbr; /* 0 */
	41	unsigned short ier; /* 1 */
	42	unsigned short fcr; /* 2 */
	43	unsigned short lcr; /* 3 */
	44	unsigned short mcr; /* 4 */
	45	unsigned short lsr; /* 5 */
	46	unsigned short msr; /* 6 */
	47	unsigned short scr; /* 7 */
	48	} __attribute__ ((packed));
	49	#elif (CFG_NS16550_REG_SIZE == 4)
	50	struct NS16550 {
22814904 WD	51	unsigned long rbr; /* 0 r */
	52	unsigned long ier; /* 1 rw */
	53	unsigned long fcr; /* 2 w */
	54	unsigned long lcr; /* 3 rw */
	55	unsigned long mcr; /* 4 rw */
	56	unsigned long lsr; /* 5 r */
	57	unsigned long msr; /* 6 r */
	58	unsigned long scr; /* 7 rw */
	59	}; /* No need to pack an already aligned struct */
717b5aad WD	60	#elif (CFG_NS16550_REG_SIZE == -4)
	61	struct NS16550 {
	62	unsigned char rbr; /* 0 */
	63	int pad1:24;
	64	unsigned char ier; /* 1 */
	65	int pad2:24;
	66	unsigned char fcr; /* 2 */
	67	int pad3:24;
	68	unsigned char lcr; /* 3 */
	69	int pad4:24;
	70	unsigned char mcr; /* 4 */
	71	int pad5:24;
	72	unsigned char lsr; /* 5 */
	73	int pad6:24;
	74	unsigned char msr; /* 6 */
	75	int pad7:24;
	76	unsigned char scr; /* 7 */
	77	int pad8:24;
8ed96046	78	#if defined(CONFIG_OMAP)
2e5983d2	79	unsigned char mdr1; /* mode select reset TL16C750*/
6f21347d WD	80	#endif
6f21347d WD	81	#ifdef CONFIG_OMAP1510
2e5983d2 WD	82	int pad9:24;
	83	unsigned long pad[10];
	84	unsigned char osc_12m_sel;
	85	int pad10:24;
	86	#endif
717b5aad	87	} __attribute__ ((packed));
f5e0d039 HS	88	#elif (CFG_NS16550_REG_SIZE == -8)
	89	struct NS16550 {
	90	unsigned char rbr; /* 0 */
	91	unsigned char pad0[7];
	92	unsigned char ier; /* 1 */
	93	unsigned char pad1[7];
	94	unsigned char fcr; /* 2 */
	95	unsigned char pad2[7];
	96	unsigned char lcr; /* 3 */
	97	unsigned char pad3[7];
	98	unsigned char mcr; /* 4 */
	99	unsigned char pad4[7];
	100	unsigned char lsr; /* 5 */
	101	unsigned char pad5[7];
	102	unsigned char msr; /* 6 */
	103	unsigned char pad6[7];
	104	unsigned char scr; /* 7 */
	105	unsigned char pad7[7];
	106	} __attribute__ ((packed));
717b5aad WD	107	#else
	108	#error "Please define NS16550 registers size."
	109	#endif
	110
	111	#define thr rbr
	112	#define iir fcr
	113	#define dll rbr
	114	#define dlm ier
	115
	116	typedef volatile struct NS16550 *NS16550_t;
	117
	118	#define FCR_FIFO_EN 0x01 /* Fifo enable */
	119	#define FCR_RXSR 0x02 /* Receiver soft reset */
	120	#define FCR_TXSR 0x04 /* Transmitter soft reset */
	121
	122	#define MCR_DTR 0x01
	123	#define MCR_RTS 0x02
	124	#define MCR_DMA_EN 0x04
	125	#define MCR_TX_DFR 0x08
	126
22814904	127	#define LCR_WLS_MSK 0x03 /* character length select mask */
717b5aad WD	128	#define LCR_WLS_5 0x00 /* 5 bit character length */
	129	#define LCR_WLS_6 0x01 /* 6 bit character length */
	130	#define LCR_WLS_7 0x02 /* 7 bit character length */
	131	#define LCR_WLS_8 0x03 /* 8 bit character length */
	132	#define LCR_STB 0x04 /* Number of stop Bits, off = 1, on = 1.5 or 2) */
	133	#define LCR_PEN 0x08 /* Parity eneble */
	134	#define LCR_EPS 0x10 /* Even Parity Select */
	135	#define LCR_STKP 0x20 /* Stick Parity */
	136	#define LCR_SBRK 0x40 /* Set Break */
	137	#define LCR_BKSE 0x80 /* Bank select enable */
	138
	139	#define LSR_DR 0x01 /* Data ready */
	140	#define LSR_OE 0x02 /* Overrun */
	141	#define LSR_PE 0x04 /* Parity error */
	142	#define LSR_FE 0x08 /* Framing error */
	143	#define LSR_BI 0x10 /* Break */
	144	#define LSR_THRE 0x20 /* Xmit holding register empty */
	145	#define LSR_TEMT 0x40 /* Xmitter empty */
	146	#define LSR_ERR 0x80 /* Error */
	147
2e5983d2 WD	148	#ifdef CONFIG_OMAP1510
	149	#define OSC_12M_SEL 0x01 /* selects 6.5 * current clk div */
	150	#endif
	151
717b5aad WD	152	/* useful defaults for LCR */
	153	#define LCR_8N1 0x03
	154
	155	void NS16550_init (NS16550_t com_port, int baud_divisor);
	156	void NS16550_putc (NS16550_t com_port, char c);
	157	char NS16550_getc (NS16550_t com_port);
	158	int NS16550_tstc (NS16550_t com_port);
	159	void NS16550_reinit (NS16550_t com_port, int baud_divisor);