From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 6 Jul 2013 21:59:10 +0000 (+0100)
Subject: ARM: debug: provide 8250 debug uart flow control configuration option
X-Git-Tag: firefly_0821_release~176^2~5416^2^2~15
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7610b607b03ada21e89d964ec27d87a5b93c3d7f;p=firefly-linux-kernel-4.4.55.git

ARM: debug: provide 8250 debug uart flow control configuration option

Move the definition out of the machine class debug-macro.S header
into the Kconfig files.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
index 9064ed492fb5..8d3bc84fb612 100644
--- a/arch/arm/Kconfig.debug
+++ b/arch/arm/Kconfig.debug
@@ -856,6 +856,15 @@ config DEBUG_LL_INCLUDE
 	default "debug/zynq.S" if DEBUG_ZYNQ_UART0 || DEBUG_ZYNQ_UART1
 	default "mach/debug-macro.S"
 
+config DEBUG_UART_8250
+	def_bool ARCH_EBSA110 || (FOOTBRIDGE && !DEBUG_DC21285_PORT) || \
+		ARCH_GEMINI || ARCH_RPC
+
+config DEBUG_UART_8250_FLOW_CONTROL
+	bool "Enable flow control for 8250 UART"
+	depends on DEBUG_UART_8250
+	default y if ARCH_EBSA110 || FOOTBRIDGE || ARCH_GEMINI || ARCH_RPC
+
 config DEBUG_UNCOMPRESS
 	bool
 	depends on ARCH_MULTIPLATFORM
diff --git a/arch/arm/include/asm/hardware/debug-8250.S b/arch/arm/include/asm/hardware/debug-8250.S
index 22c689255e6e..bca304576be0 100644
--- a/arch/arm/include/asm/hardware/debug-8250.S
+++ b/arch/arm/include/asm/hardware/debug-8250.S
@@ -21,7 +21,7 @@
 		.endm
 
 		.macro	waituart,rd,rx
-#ifdef FLOW_CONTROL
+#ifdef CONFIG_DEBUG_UART_8250_FLOW_CONTROL
 1001:		ldrb	\rd, [\rx, #UART_MSR << UART_SHIFT]
 		tst	\rd, #UART_MSR_CTS
 		beq	1001b
diff --git a/arch/arm/mach-ebsa110/include/mach/debug-macro.S b/arch/arm/mach-ebsa110/include/mach/debug-macro.S
index bb02c05e6812..9b66e79632a9 100644
--- a/arch/arm/mach-ebsa110/include/mach/debug-macro.S
+++ b/arch/arm/mach-ebsa110/include/mach/debug-macro.S
@@ -18,5 +18,4 @@
 		.endm
 
 #define UART_SHIFT	2
-#define FLOW_CONTROL
 #include <asm/hardware/debug-8250.S>
diff --git a/arch/arm/mach-footbridge/include/mach/debug-macro.S b/arch/arm/mach-footbridge/include/mach/debug-macro.S
index c169f0c99b2a..18130fe99f28 100644
--- a/arch/arm/mach-footbridge/include/mach/debug-macro.S
+++ b/arch/arm/mach-footbridge/include/mach/debug-macro.S
@@ -23,7 +23,6 @@
 		.endm
 
 #define UART_SHIFT	0
-#define FLOW_CONTROL
 #include <asm/hardware/debug-8250.S>
 
 #else
diff --git a/arch/arm/mach-gemini/include/mach/debug-macro.S b/arch/arm/mach-gemini/include/mach/debug-macro.S
index 837670763b85..cdee448dd34e 100644
--- a/arch/arm/mach-gemini/include/mach/debug-macro.S
+++ b/arch/arm/mach-gemini/include/mach/debug-macro.S
@@ -17,5 +17,4 @@
 	.endm
 
 #define UART_SHIFT	2
-#define FLOW_CONTROL
 #include <asm/hardware/debug-8250.S>
diff --git a/arch/arm/mach-rpc/include/mach/debug-macro.S b/arch/arm/mach-rpc/include/mach/debug-macro.S
index 6d28cc99b124..a92753d0daeb 100644
--- a/arch/arm/mach-rpc/include/mach/debug-macro.S
+++ b/arch/arm/mach-rpc/include/mach/debug-macro.S
@@ -19,5 +19,4 @@
 		.endm
 
 #define UART_SHIFT	2
-#define FLOW_CONTROL
 #include <asm/hardware/debug-8250.S>