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authorRussell King <rmk+kernel@arm.linux.org.uk>2013-07-07 00:11:35 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2013-08-25 17:11:02 +0100
commit2facbc88733b34e1f992cde054c88b8e07607043 (patch)
tree5c0a61096777f07291b0e7db3c49a4d05441aa38 /arch/arm/include/debug/8250.S
parentc3faa9b7573bf8668869c0ef3075430dc9f053c6 (diff)
downloadlinux-linaro-stable-2facbc88733b34e1f992cde054c88b8e07607043.tar.gz
ARM: debug: move 8250 debug include into arch/arm/include/debug/
Now that the 8250 debug include can stand alone without requiring platforms to provide any macros, move it into the debug directory so it can be directly included. This allows us to get rid of a lot of debug-macros include files. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/include/debug/8250.S')
-rw-r--r--arch/arm/include/debug/8250.S36
1 files changed, 36 insertions, 0 deletions
diff --git a/arch/arm/include/debug/8250.S b/arch/arm/include/debug/8250.S
new file mode 100644
index 000000000000..92cab395677a
--- /dev/null
+++ b/arch/arm/include/debug/8250.S
@@ -0,0 +1,36 @@
+/*
+ * arch/arm/include/debug/8250.S
+ *
+ * Copyright (C) 1994-2013 Russell King
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#include <linux/serial_reg.h>
+
+ .macro addruart, rp, rv, tmp
+ ldr \rp, =CONFIG_DEBUG_UART_PHYS
+ ldr \rv, =CONFIG_DEBUG_UART_VIRT
+ .endm
+
+#define UART_SHIFT CONFIG_DEBUG_UART_8250_SHIFT
+
+ .macro senduart,rd,rx
+ strb \rd, [\rx, #UART_TX << UART_SHIFT]
+ .endm
+
+ .macro busyuart,rd,rx
+1002: ldrb \rd, [\rx, #UART_LSR << UART_SHIFT]
+ and \rd, \rd, #UART_LSR_TEMT | UART_LSR_THRE
+ teq \rd, #UART_LSR_TEMT | UART_LSR_THRE
+ bne 1002b
+ .endm
+
+ .macro waituart,rd,rx
+#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL
+1001: ldrb \rd, [\rx, #UART_MSR << UART_SHIFT]
+ tst \rd, #UART_MSR_CTS
+ beq 1001b
+#endif
+ .endm