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Blackfin arch: add missing implementations SIC_IWR crosses several registers 

SIC_IWR crosses several registers
 - add missing implementations
 - make sure SIC_IWR is SET after boot

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
This commit is contained in:
Michael Hennerich 2007-06-21 11:34:16 +08:00 committed by Bryan Wu
parent f8ffe652a0
commit 1c5d2265a8
4 changed files with 40 additions and 4 deletions
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3
arch/blackfin/mach-common/ints-priority-dc.c
View File

@ -371,6 +371,9 @@ int __init init_arch_irq(void)
bfin_write_SICA_IMASK1(SIC_UNMASK_ALL);
SSYNC();
bfin_write_SICA_IWR0(IWR_ENABLE_ALL);
bfin_write_SICA_IWR1(IWR_ENABLE_ALL);
local_irq_disable();
init_exception_buff();

4
arch/blackfin/mach-common/ints-priority-sc.c
View File

@ -472,8 +472,12 @@ int __init init_arch_irq(void)
bfin_write_SIC_IMASK0(SIC_UNMASK_ALL);
bfin_write_SIC_IMASK1(SIC_UNMASK_ALL);
bfin_write_SIC_IMASK2(SIC_UNMASK_ALL);
bfin_write_SIC_IWR0(IWR_ENABLE_ALL);
bfin_write_SIC_IWR1(IWR_ENABLE_ALL);
bfin_write_SIC_IWR2(IWR_ENABLE_ALL);
#else
bfin_write_SIC_IMASK(SIC_UNMASK_ALL);
bfin_write_SIC_IWR(IWR_ENABLE_ALL);
#endif
SSYNC();

27
include/asm-blackfin/mach-bf548/cdefBF54x_base.h
View File

@ -32,6 +32,7 @@
#define _CDEF_BF54X_H
#include "defBF54x_base.h"
#include <asm/system.h>
/* ************************************************************** */
/* SYSTEM & MMR ADDRESS DEFINITIONS COMMON TO ALL ADSP-BF54x */
@ -44,7 +45,31 @@
#define bfin_read_PLL_DIV() bfin_read16(PLL_DIV)
#define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV, val)
#define bfin_read_VR_CTL() bfin_read16(VR_CTL)
#define bfin_write_VR_CTL(val) bfin_write16(VR_CTL, val)
/* Writing to VR_CTL initiates a PLL relock sequence. */
static __inline__ void bfin_write_VR_CTL(unsigned int val)
{
unsigned long flags, iwr0, iwr1, iwr2;
/* Enable the PLL Wakeup bit in SIC IWR */
iwr0 = bfin_read32(SIC_IWR0);
iwr1 = bfin_read32(SIC_IWR1);
iwr2 = bfin_read32(SIC_IWR2);
/* Only allow PPL Wakeup) */
bfin_write32(SIC_IWR0, IWR_ENABLE(0));
bfin_write32(SIC_IWR1, 0);
bfin_write32(SIC_IWR2, 0);
bfin_write16(VR_CTL, val);
__builtin_bfin_ssync();
local_irq_save(flags);
asm("IDLE;");
local_irq_restore(flags);
bfin_write32(SIC_IWR0, iwr0);
bfin_write32(SIC_IWR1, iwr1);
bfin_write32(SIC_IWR2, iwr2);
}
#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT)
#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT, val)
#define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT)

10
include/asm-blackfin/mach-bf561/cdefBF561.h
View File

@ -57,12 +57,14 @@
/* Writing to VR_CTL initiates a PLL relock sequence. */
static __inline__ void bfin_write_VR_CTL(unsigned int val)
{
unsigned long flags, iwr;
unsigned long flags, iwr0, iwr1;
/* Enable the PLL Wakeup bit in SIC IWR */
iwr = bfin_read32(SICA_IWR0);
iwr0 = bfin_read32(SICA_IWR0);
iwr1 = bfin_read32(SICA_IWR1);
/* Only allow PPL Wakeup) */
bfin_write32(SICA_IWR0, IWR_ENABLE(0));
bfin_write32(SICA_IWR1, 0);
bfin_write16(VR_CTL, val);
__builtin_bfin_ssync();
@ -70,7 +72,9 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
local_irq_save(flags);
asm("IDLE;");
local_irq_restore(flags);
bfin_write32(SICA_IWR0, iwr);
bfin_write32(SICA_IWR0, iwr0);
bfin_write32(SICA_IWR1, iwr1);
}
#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT)
#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT,val)