From: Hollis Blanchard <hollisb@us.ibm.com>
To: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Cc: linuxppc-dev <linuxppc-dev@ozlabs.org>
Subject: [PATCH] fix xmon input on 440
Date: Fri, 14 Sep 2007 15:44:47 -0500 [thread overview]
Message-ID: <1189802687.20625.74.camel@basalt> (raw)
Implement udbg_getc() for 440, which fixes xmon input.
Signed-off-by: Hollis Blanchard <hollisb@us.ibm.com>
diff --git a/arch/powerpc/kernel/udbg_16550.c b/arch/powerpc/kernel/udbg_16550.c
--- a/arch/powerpc/kernel/udbg_16550.c
+++ b/arch/powerpc/kernel/udbg_16550.c
@@ -206,11 +206,22 @@ static void udbg_44x_as1_putc(char c)
}
}
+static int udbg_44x_as1_getc(void)
+{
+ if (udbg_comport) {
+ while ((as1_readb(&udbg_comport->lsr) & LSR_DR) == 0)
+ /* wait for char */;
+ return as1_readb(&udbg_comport->rbr);
+ }
+ return -1;
+}
+
void __init udbg_init_44x_as1(void)
{
udbg_comport =
(volatile struct NS16550 __iomem *)PPC44x_EARLY_DEBUG_VIRTADDR;
udbg_putc = udbg_44x_as1_putc;
+ udbg_getc = udbg_44x_as1_getc;
}
#endif /* CONFIG_PPC_EARLY_DEBUG_44x */
--
Hollis Blanchard
IBM Linux Technology Center
next reply other threads:[~2007-09-14 20:45 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-14 20:44 Hollis Blanchard [this message]
2007-09-17 2:52 ` [PATCH] fix xmon input on 440 David Gibson
2007-09-17 3:26 ` Josh Boyer
2007-09-17 3:39 ` Olof Johansson
2007-09-17 4:15 ` Hollis Blanchard
2007-09-17 10:58 ` Josh Boyer
2007-09-17 12:24 ` Milton Miller
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