[U-Boot] [PATCH] Origen: Set FIMD as the default display path

[Tushar Behera]

On EXYNOS4210, there are three paths for display data to be processed,
namely MIE, MDNIE and FIMD. On Origen board, FIMD display controller
is used.

Signed-off-by: Tushar Behera <tushar.behera at linaro.org>
---
This patch is rebased on master branch of u-boot-samsung tree.

 board/samsung/origen/lowlevel_init.S |   13 +++++++++++++
 board/samsung/origen/origen_setup.h  |    7 +++++++
 2 files changed, 20 insertions(+)

diff --git a/board/samsung/origen/lowlevel_init.S b/board/samsung/origen/lowlevel_init.S
index be9d418..a7ea680 100644
--- a/board/samsung/origen/lowlevel_init.S
+++ b/board/samsung/origen/lowlevel_init.S
@@ -89,6 +89,7 @@ lowlevel_init:
 	bl uart_asm_init
 	bl arch_cpu_init
 	bl tzpc_init
+	bl display_init
 	pop	{pc}
 
 wakeup_reset:
@@ -96,6 +97,7 @@ wakeup_reset:
 	bl mem_ctrl_asm_init
 	bl arch_cpu_init
 	bl tzpc_init
+	bl display_init
 
 exit_wakeup:
 	/* Load return address and jump to kernel */
@@ -355,3 +357,14 @@ uart_asm_init:
 	nop
 	nop
 
+/* Setting default display path to FIMD */
+display_init:
+	push	{lr}
+	ldr	r0, =EXYNOS4_SYSREG_BASE
+
+	/* DISPLAY_CONTROL */
+	ldr	r1, =DISPLAY_CONTROL_VAL
+	ldr	r2, =DISPLAY_CONTROL_OFFSET
+	str	r1, [r0, r2]
+
+	pop	{pc}
diff --git a/board/samsung/origen/origen_setup.h b/board/samsung/origen/origen_setup.h
index 926a4cc..b0e1bc2 100644
--- a/board/samsung/origen/origen_setup.h
+++ b/board/samsung/origen/origen_setup.h
@@ -83,6 +83,8 @@
 #define VPLL_CON0_OFFSET	0xC120
 #define VPLL_CON1_OFFSET	0xC124
 
+#define DISPLAY_CONTROL_OFFSET	0x210
+
 /* DMC: DRAM Controllor Register offsets */
 #define DMC_CONCONTROL		0x00
 #define DMC_MEMCONTROL		0x04
@@ -485,6 +487,11 @@
 				| (VPLL_MRR << 24) \
 				| (VPLL_MFR << 16) \
 				| (VPLL_K << 0))
+
+/* DISPLAY_CONTROL */
+#define FIMDBYPASS_LBLK0	0x1
+#define DISPLAY_CONTROL_VAL	(FIMDBYPASS_LBLK0 << 1)
+
 /*
  * UART GPIO_A0/GPIO_A1 Control Register Value
  * 0x2: UART Function
-- 
1.7.9.5