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r: 100918
b: refs/heads/master
c: ffdf786
h: refs/heads/master
v: v3
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Russell King authored and Russell King committed Jun 2, 2008
1 parent 5346214 commit 3016793
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2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4e5e8de0dbdeb08df2b4c15fa2b0ba2216091793
refs/heads/master: ffdf786291636137ef2d51c3a5d340793032aa28
82 changes: 41 additions & 41 deletions trunk/arch/arm/mach-pxa/standby.S
Original file line number Diff line number Diff line change
Expand Up @@ -35,20 +35,20 @@ ENTRY(pxa_cpu_standby)

#ifdef CONFIG_PXA3xx

#define MDCNFG 0x0000
#define MDCNFG_DMCEN (1 << 30)
#define DDR_HCAL 0x0060
#define DDR_HCAL_HCRNG 0x1f
#define DDR_HCAL_HCPROG (1 << 28)
#define DDR_HCAL_HCEN (1 << 31)
#define DMCIER 0x0070
#define DMCIER_EDLP (1 << 29)
#define DMCISR 0x0078
#define RCOMP 0x0100
#define RCOMP_SWEVAL (1 << 31)
#define PXA3_MDCNFG 0x0000
#define PXA3_MDCNFG_DMCEN (1 << 30)
#define PXA3_DDR_HCAL 0x0060
#define PXA3_DDR_HCAL_HCRNG 0x1f
#define PXA3_DDR_HCAL_HCPROG (1 << 28)
#define PXA3_DDR_HCAL_HCEN (1 << 31)
#define PXA3_DMCIER 0x0070
#define PXA3_DMCIER_EDLP (1 << 29)
#define PXA3_DMCISR 0x0078
#define PXA3_RCOMP 0x0100
#define PXA3_RCOMP_SWEVAL (1 << 31)

ENTRY(pm_enter_standby_start)
mov r1, #0xf6000000 @ DMEMC_REG_BASE (MDCNFG)
mov r1, #0xf6000000 @ DMEMC_REG_BASE (PXA3_MDCNFG)
add r1, r1, #0x00100000

/*
Expand All @@ -59,54 +59,54 @@ ENTRY(pm_enter_standby_start)
* This also means that only the dynamic memory controller
* can be reliably accessed in the code following standby.
*/
ldr r2, [r1] @ Dummy read MDCNFG
ldr r2, [r1] @ Dummy read PXA3_MDCNFG

mcr p14, 0, r0, c7, c0, 0
.rept 8
nop
.endr

ldr r0, [r1, #DDR_HCAL] @ Clear (and wait for) HCEN
bic r0, r0, #DDR_HCAL_HCEN
str r0, [r1, #DDR_HCAL]
1: ldr r0, [r1, #DDR_HCAL]
tst r0, #DDR_HCAL_HCEN
ldr r0, [r1, #PXA3_DDR_HCAL] @ Clear (and wait for) HCEN
bic r0, r0, #PXA3_DDR_HCAL_HCEN
str r0, [r1, #PXA3_DDR_HCAL]
1: ldr r0, [r1, #PXA3_DDR_HCAL]
tst r0, #PXA3_DDR_HCAL_HCEN
bne 1b

ldr r0, [r1, #RCOMP] @ Initiate RCOMP
orr r0, r0, #RCOMP_SWEVAL
str r0, [r1, #RCOMP]
ldr r0, [r1, #PXA3_RCOMP] @ Initiate RCOMP
orr r0, r0, #PXA3_RCOMP_SWEVAL
str r0, [r1, #PXA3_RCOMP]

mov r0, #~0 @ Clear interrupts
str r0, [r1, #DMCISR]
mov r0, #~0 @ Clear interrupts
str r0, [r1, #PXA3_DMCISR]

ldr r0, [r1, #DMCIER] @ set DMIER[EDLP]
orr r0, r0, #DMCIER_EDLP
str r0, [r1, #DMCIER]
ldr r0, [r1, #PXA3_DMCIER] @ set DMIER[EDLP]
orr r0, r0, #PXA3_DMCIER_EDLP
str r0, [r1, #PXA3_DMCIER]

ldr r0, [r1, #DDR_HCAL] @ clear HCRNG, set HCPROG, HCEN
bic r0, r0, #DDR_HCAL_HCRNG
orr r0, r0, #DDR_HCAL_HCEN | DDR_HCAL_HCPROG
str r0, [r1, #DDR_HCAL]
ldr r0, [r1, #PXA3_DDR_HCAL] @ clear HCRNG, set HCPROG, HCEN
bic r0, r0, #PXA3_DDR_HCAL_HCRNG
orr r0, r0, #PXA3_DDR_HCAL_HCEN | PXA3_DDR_HCAL_HCPROG
str r0, [r1, #PXA3_DDR_HCAL]

1: ldr r0, [r1, #DMCISR]
tst r0, #DMCIER_EDLP
1: ldr r0, [r1, #PXA3_DMCISR]
tst r0, #PXA3_DMCIER_EDLP
beq 1b

ldr r0, [r1, #MDCNFG] @ set MDCNFG[DMCEN]
orr r0, r0, #MDCNFG_DMCEN
str r0, [r1, #MDCNFG]
1: ldr r0, [r1, #MDCNFG]
tst r0, #MDCNFG_DMCEN
ldr r0, [r1, #PXA3_MDCNFG] @ set PXA3_MDCNFG[DMCEN]
orr r0, r0, #PXA3_MDCNFG_DMCEN
str r0, [r1, #PXA3_MDCNFG]
1: ldr r0, [r1, #PXA3_MDCNFG]
tst r0, #PXA3_MDCNFG_DMCEN
beq 1b

ldr r0, [r1, #DDR_HCAL] @ set DDR_HCAL[HCRNG]
ldr r0, [r1, #PXA3_DDR_HCAL] @ set PXA3_DDR_HCAL[HCRNG]
orr r0, r0, #2 @ HCRNG
str r0, [r1, #DDR_HCAL]
str r0, [r1, #PXA3_DDR_HCAL]

ldr r0, [r1, #DMCIER] @ Clear the interrupt
ldr r0, [r1, #PXA3_DMCIER] @ Clear the interrupt
bic r0, r0, #0x20000000
str r0, [r1, #DMCIER]
str r0, [r1, #PXA3_DMCIER]

mov pc, lr
ENTRY(pm_enter_standby_end)
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