2 * udbg interface to hvc_console.c
4 * (C) Copyright David Gibson, IBM Corporation 2008.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 #include <linux/console.h>
22 #include <linux/delay.h>
23 #include <linux/err.h>
24 #include <linux/init.h>
25 #include <linux/moduleparam.h>
26 #include <linux/types.h>
27 #include <linux/irq.h>
31 #include "hvc_console.h"
33 struct hvc_struct
*hvc_udbg_dev
;
35 static int hvc_udbg_put(uint32_t vtermno
, const char *buf
, int count
)
39 for (i
= 0; i
< count
; i
++)
45 static int hvc_udbg_get(uint32_t vtermno
, char *buf
, int count
)
52 for (i
= 0; i
< count
; i
++) {
53 if ((c
= udbg_getc_poll()) == -1)
61 static struct hv_ops hvc_udbg_ops
= {
62 .get_chars
= hvc_udbg_get
,
63 .put_chars
= hvc_udbg_put
,
66 static int __init
hvc_udbg_init(void)
68 struct hvc_struct
*hp
;
72 hp
= hvc_alloc(0, NO_IRQ
, &hvc_udbg_ops
, 16);
80 module_init(hvc_udbg_init
);
82 static void __exit
hvc_udbg_exit(void)
85 hvc_remove(hvc_udbg_dev
);
87 module_exit(hvc_udbg_exit
);
89 static int __init
hvc_udbg_console_init(void)
91 hvc_instantiate(0, 0, &hvc_udbg_ops
);
92 add_preferred_console("hvc", 0, NULL
);
96 console_initcall(hvc_udbg_console_init
);
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