linux-kernel - [PATCH 2/4] ARM: mvebu: Move SCU power up in a function

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Message-Id: <1414088070-12510-3-git-send-email-gregory.clement@free-electrons.com>
Date:	Thu, 23 Oct 2014 20:14:28 +0200
From:	Gregory CLEMENT <gregory.clement@...e-electrons.com>
To:	Jason Cooper <jason@...edaemon.net>, Andrew Lunn <andrew@...n.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	Gregory CLEMENT <gregory.clement@...e-electrons.com>
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>,
	linux-arm-kernel@...ts.infradead.org,
	Lior Amsalem <alior@...vell.com>,
	Tawfik Bayouk <tawfik@...vell.com>,
	Nadav Haklai <nadavh@...vell.com>, linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] ARM: mvebu: Move SCU power up in a function

This will allow reusing the same function in the secondary_startup
for the Cortex A9 SoC.

Signed-off-by: Gregory CLEMENT <gregory.clement@...e-electrons.com>
---
 arch/arm/mach-mvebu/pmsu_ll.S | 20 +++++++++++++-------
 1 file changed, 13 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-mvebu/pmsu_ll.S b/arch/arm/mach-mvebu/pmsu_ll.S
index a945756cfb45..0505010474a9 100644
--- a/arch/arm/mach-mvebu/pmsu_ll.S
+++ b/arch/arm/mach-mvebu/pmsu_ll.S
@@ -12,6 +12,18 @@
 #include <linux/linkage.h>
 #include <asm/assembler.h>
 
+
+ENTRY(power_up_scu)
+	mrc     p15, 4, r1, c15, c0	@ get SCU base address
+	orr	r1, r1, #0x8		@ SCU CPU Power Status Register
+	mrc	15, 0, r0, cr0, cr0, 5	@ get the CPU ID
+	and	r0, r0, #15
+	add	r1, r1, r0
+	mov	r0, #0x0
+	strb	r0, [r1]		@ switch SCU power state to Normal mode
+	ret	lr
+ENDPROC(power_up_scu)
+
 /*
  * This is the entry point through which CPUs exiting cpuidle deep
  * idle state are going.
@@ -27,13 +39,7 @@ ENTRY(armada_38x_cpu_resume)
 	/* do we need it for Armada 38x*/
 ARM_BE8(setend	be )			@ go BE8 if entered LE
 	bl	v7_invalidate_l1
-	mrc     p15, 4, r1, c15, c0	@ get SCU base address
-	orr	r1, r1, #0x8		@ SCU CPU Power Status Register
-	mrc	15, 0, r0, cr0, cr0, 5	@ get the CPU ID
-	and	r0, r0, #15
-	add	r1, r1, r0
-	mov	r0, #0x0
-	strb	r0, [r1]		@ switch SCU power state to Normal mode
+	bl	power_up_scu
 	b	cpu_resume
 ENDPROC(armada_38x_cpu_resume)
 
-- 
1.9.1

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