udbg_16550.c (463ce0e103f419f51b1769111e73fe8bb305d0ec) udbg_16550.c (51d3082fe6e55aecfa17113dbe98077c749f724c)
1/*
2 * udbg for for NS16550 compatable serial ports
3 *
4 * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version

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42#define LSR_THRE 0x20 /* Xmit holding register empty */
43#define LSR_TEMT 0x40 /* Xmitter empty */
44#define LSR_ERR 0x80 /* Error */
45
46#define LCR_DLAB 0x80
47
48static volatile struct NS16550 __iomem *udbg_comport;
49
1/*
2 * udbg for for NS16550 compatable serial ports
3 *
4 * Copyright (C) 2001-2005 PPC 64 Team, IBM Corp
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version

--- 33 unchanged lines hidden (view full) ---

42#define LSR_THRE 0x20 /* Xmit holding register empty */
43#define LSR_TEMT 0x40 /* Xmitter empty */
44#define LSR_ERR 0x80 /* Error */
45
46#define LCR_DLAB 0x80
47
48static volatile struct NS16550 __iomem *udbg_comport;
49
50static void udbg_550_putc(unsigned char c)
50static void udbg_550_putc(char c)
51{
52 if (udbg_comport) {
53 while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
54 /* wait for idle */;
55 out_8(&udbg_comport->thr, c);
56 if (c == '\n')
57 udbg_550_putc('\r');
58 }

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64 if ((in_8(&udbg_comport->lsr) & LSR_DR) != 0)
65 return in_8(&udbg_comport->rbr);
66 else
67 return -1;
68 }
69 return -1;
70}
71
51{
52 if (udbg_comport) {
53 while ((in_8(&udbg_comport->lsr) & LSR_THRE) == 0)
54 /* wait for idle */;
55 out_8(&udbg_comport->thr, c);
56 if (c == '\n')
57 udbg_550_putc('\r');
58 }

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64 if ((in_8(&udbg_comport->lsr) & LSR_DR) != 0)
65 return in_8(&udbg_comport->rbr);
66 else
67 return -1;
68 }
69 return -1;
70}
71
72static unsigned char udbg_550_getc(void)
72static char udbg_550_getc(void)
73{
74 if (udbg_comport) {
75 while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)
76 /* wait for char */;
77 return in_8(&udbg_comport->rbr);
78 }
79 return 0;
80}

--- 86 unchanged lines hidden --- 		73{
74 if (udbg_comport) {
75 while ((in_8(&udbg_comport->lsr) & LSR_DR) == 0)
76 /* wait for char */;
77 return in_8(&udbg_comport->rbr);
78 }
79 return 0;
80}

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