DaVinci: correct MDSTAT.STATE mask

MDSTAT.STATE occupies bits 0..5 according to all available documentation, so fix
the mask which previously was leaving out the intermediate state indicator bit.

While at it, introduce two #define's for that mask -- unfortunately, we can't
use a single #define as the assembly code can't include <asm/arch/hardware.h>
due to C-specfic constructs in it.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>

arch/arm/cpu/arm926ejs/davinci/lowlevel_init.S

@@ -45,6 +45,8 @@
 
 #include <config.h>
 
+#define MDSTAT_STATE	0x3f
+
 .globl	lowlevel_init
 lowlevel_init:
 
@@ -268,7 +270,7 @@ checkStatClkStop:
 checkDDRStatClkStop:
 	ldr	r6, MDSTAT_DDR2
 	ldr	r7, [r6]
-	and	r7, r7, $0x1f
+	and	r7, r7, $MDSTAT_STATE
 	cmp	r7, $0x03
 	bne	checkDDRStatClkStop
 
@@ -343,7 +345,7 @@ checkStatClkStop2:
 checkDDRStatClkStop2:
 	ldr	r6, MDSTAT_DDR2
 	ldr	r7, [r6]
-	and	r7, r7, $0x1f
+	and	r7, r7, $MDSTAT_STATE
 	cmp	r7, $0x01
 	bne	checkDDRStatClkStop2
 
@@ -374,7 +376,7 @@ checkStatClkEn2:
 checkDDRStatClkEn2:
 	ldr	r6, MDSTAT_DDR2
 	ldr	r7, [r6]
-	and	r7, r7, $0x1f
+	and	r7, r7, $MDSTAT_STATE
 	cmp	r7, $0x03
 	bne	checkDDRStatClkEn2
 

arch/arm/cpu/arm926ejs/davinci/psc.c

@@ -83,7 +83,7 @@ void lpsc_on(unsigned int id)
 	while (readl(ptstat) & 0x01)
 		continue;
 
-	if ((readl(mdstat) & 0x1f) == 0x03)
+	if ((readl(mdstat) & PSC_MDSTAT_STATE) == 0x03)
 		return; /* Already on and enabled */
 
 	writel(readl(mdctl) | 0x03, mdctl);
@@ -114,7 +114,7 @@ void lpsc_on(unsigned int id)
 
 	while (readl(ptstat) & 0x01)
 		continue;
-	while ((readl(mdstat) & 0x1f) != 0x03)
+	while ((readl(mdstat) & PSC_MDSTAT_STATE) != 0x03)
 		continue;
 }
 

arch/arm/include/asm/arch-davinci/hardware.h

@@ -356,6 +356,8 @@ struct davinci_psc_regs {
 
 #endif /* CONFIG_SOC_DA8XX */
 
+#define PSC_MDSTAT_STATE		0x3f
+
 #ifndef CONFIG_SOC_DA8XX
 
 /* Miscellania... */