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authorMike Frysinger <vapier.adi@gmail.com>2008-11-18 04:48:22 -0500
committerBryan Wu <cooloney@kernel.org>2008-11-18 04:48:22 -0500
commit53442e1cbdc1559cd39e0076adae6df64af36a3e (patch)
tree6513ffea1fcfdf488d5ec5e96f78fb2c2bc4b9f2 /arch/blackfin/mach-bf538/include
parentb94919e2da2f7acde842972a57fcd6dcc4a528db (diff)
Blackfin arch: delay PLL_CTL/VR_CTL wrappers
Delay PLL_CTL/VR_CTL wrappers as much as possible to avoid the inter-dependency problems with cdef and common headers Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch/blackfin/mach-bf538/include')
-rw-r--r--arch/blackfin/mach-bf538/include/mach/cdefBF538.h103
1 files changed, 53 insertions, 50 deletions
diff --git a/arch/blackfin/mach-bf538/include/mach/cdefBF538.h b/arch/blackfin/mach-bf538/include/mach/cdefBF538.h
index f92e7c3932f3..1d768a65d139 100644
--- a/arch/blackfin/mach-bf538/include/mach/cdefBF538.h
+++ b/arch/blackfin/mach-bf538/include/mach/cdefBF538.h
@@ -39,62 +39,12 @@
39/*include core specific register pointer definitions*/ 39/*include core specific register pointer definitions*/
40#include <asm/cdef_LPBlackfin.h> 40#include <asm/cdef_LPBlackfin.h>
41 41
42#include <asm/system.h>
43
44#define bfin_writePTR(addr, val) bfin_write32(addr, val) 42#define bfin_writePTR(addr, val) bfin_write32(addr, val)
45 43
46#define bfin_read_PLL_CTL() bfin_read16(PLL_CTL) 44#define bfin_read_PLL_CTL() bfin_read16(PLL_CTL)
47/* Writing to PLL_CTL initiates a PLL relock sequence. */
48static __inline__ void bfin_write_PLL_CTL(unsigned int val)
49{
50 unsigned long flags, iwr0, iwr1;
51
52 if (val == bfin_read_PLL_CTL())
53 return;
54
55 local_irq_save(flags);
56 /* Enable the PLL Wakeup bit in SIC IWR */
57 iwr0 = bfin_read32(SIC_IWR0);
58 iwr1 = bfin_read32(SIC_IWR1);
59 /* Only allow PPL Wakeup) */
60 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
61 bfin_write32(SIC_IWR1, 0);
62
63 bfin_write16(PLL_CTL, val);
64 SSYNC();
65 asm("IDLE;");
66
67 bfin_write32(SIC_IWR0, iwr0);
68 bfin_write32(SIC_IWR1, iwr1);
69 local_irq_restore(flags);
70}
71#define bfin_read_PLL_DIV() bfin_read16(PLL_DIV) 45#define bfin_read_PLL_DIV() bfin_read16(PLL_DIV)
72#define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV, val) 46#define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV, val)
73#define bfin_read_VR_CTL() bfin_read16(VR_CTL) 47#define bfin_read_VR_CTL() bfin_read16(VR_CTL)
74/* Writing to VR_CTL initiates a PLL relock sequence. */
75static __inline__ void bfin_write_VR_CTL(unsigned int val)
76{
77 unsigned long flags, iwr0, iwr1;
78
79 if (val == bfin_read_VR_CTL())
80 return;
81
82 local_irq_save(flags);
83 /* Enable the PLL Wakeup bit in SIC IWR */
84 iwr0 = bfin_read32(SIC_IWR0);
85 iwr1 = bfin_read32(SIC_IWR1);
86 /* Only allow PPL Wakeup) */
87 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
88 bfin_write32(SIC_IWR1, 0);
89
90 bfin_write16(VR_CTL, val);
91 SSYNC();
92 asm("IDLE;");
93
94 bfin_write32(SIC_IWR0, iwr0);
95 bfin_write32(SIC_IWR1, iwr1);
96 local_irq_restore(flags);
97}
98#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT) 48#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT)
99#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT, val) 49#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT, val)
100#define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT) 50#define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT)
@@ -2102,4 +2052,57 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
2102#define bfin_read_CAN_MB31_ID1() bfin_read16(CAN_MB31_ID1) 2052#define bfin_read_CAN_MB31_ID1() bfin_read16(CAN_MB31_ID1)
2103#define bfin_write_CAN_MB31_ID1(val) bfin_write16(CAN_MB31_ID1, val) 2053#define bfin_write_CAN_MB31_ID1(val) bfin_write16(CAN_MB31_ID1, val)
2104 2054
2055/* These need to be last due to the cdef/linux inter-dependencies */
2056#include <asm/system.h>
2057
2058/* Writing to PLL_CTL initiates a PLL relock sequence. */
2059static __inline__ void bfin_write_PLL_CTL(unsigned int val)
2060{
2061 unsigned long flags, iwr0, iwr1;
2062
2063 if (val == bfin_read_PLL_CTL())
2064 return;
2065
2066 local_irq_save(flags);
2067 /* Enable the PLL Wakeup bit in SIC IWR */
2068 iwr0 = bfin_read32(SIC_IWR0);
2069 iwr1 = bfin_read32(SIC_IWR1);
2070 /* Only allow PPL Wakeup) */
2071 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
2072 bfin_write32(SIC_IWR1, 0);
2073
2074 bfin_write16(PLL_CTL, val);
2075 SSYNC();
2076 asm("IDLE;");
2077
2078 bfin_write32(SIC_IWR0, iwr0);
2079 bfin_write32(SIC_IWR1, iwr1);
2080 local_irq_restore(flags);
2081}
2082
2083/* Writing to VR_CTL initiates a PLL relock sequence. */
2084static __inline__ void bfin_write_VR_CTL(unsigned int val)
2085{
2086 unsigned long flags, iwr0, iwr1;
2087
2088 if (val == bfin_read_VR_CTL())
2089 return;
2090
2091 local_irq_save(flags);
2092 /* Enable the PLL Wakeup bit in SIC IWR */
2093 iwr0 = bfin_read32(SIC_IWR0);
2094 iwr1 = bfin_read32(SIC_IWR1);
2095 /* Only allow PPL Wakeup) */
2096 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
2097 bfin_write32(SIC_IWR1, 0);
2098
2099 bfin_write16(VR_CTL, val);
2100 SSYNC();
2101 asm("IDLE;");
2102
2103 bfin_write32(SIC_IWR0, iwr0);
2104 bfin_write32(SIC_IWR1, iwr1);
2105 local_irq_restore(flags);
2106}
2107
2105#endif 2108#endif