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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-bf537/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-bf537/include')
-rw-r--r--arch/blackfin/mach-bf537/include/mach/cdefBF534.h91
1 files changed, 47 insertions, 44 deletions
diff --git a/arch/blackfin/mach-bf537/include/mach/cdefBF534.h b/arch/blackfin/mach-bf537/include/mach/cdefBF534.h
index 88d491cd9f36..76135607e35b 100644
--- a/arch/blackfin/mach-bf537/include/mach/cdefBF534.h
+++ b/arch/blackfin/mach-bf537/include/mach/cdefBF534.h
@@ -40,55 +40,11 @@
40/* Include core specific register pointer definitions */ 40/* Include core specific register pointer definitions */
41#include <asm/cdef_LPBlackfin.h> 41#include <asm/cdef_LPBlackfin.h>
42 42
43#include <asm/system.h>
44
45/* Clock and System Control (0xFFC00000 - 0xFFC000FF) */ 43/* Clock and System Control (0xFFC00000 - 0xFFC000FF) */
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, iwr;
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 iwr = bfin_read32(SIC_IWR);
58 /* Only allow PPL Wakeup) */
59 bfin_write32(SIC_IWR, IWR_ENABLE(0));
60
61 bfin_write16(PLL_CTL, val);
62 SSYNC();
63 asm("IDLE;");
64
65 bfin_write32(SIC_IWR, iwr);
66 local_irq_restore(flags);
67}
68#define bfin_read_PLL_DIV() bfin_read16(PLL_DIV) 45#define bfin_read_PLL_DIV() bfin_read16(PLL_DIV)
69#define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV,val) 46#define bfin_write_PLL_DIV(val) bfin_write16(PLL_DIV,val)
70#define bfin_read_VR_CTL() bfin_read16(VR_CTL) 47#define bfin_read_VR_CTL() bfin_read16(VR_CTL)
71/* Writing to VR_CTL initiates a PLL relock sequence. */
72static __inline__ void bfin_write_VR_CTL(unsigned int val)
73{
74 unsigned long flags, iwr;
75
76 if (val == bfin_read_VR_CTL())
77 return;
78
79 local_irq_save(flags);
80 /* Enable the PLL Wakeup bit in SIC IWR */
81 iwr = bfin_read32(SIC_IWR);
82 /* Only allow PPL Wakeup) */
83 bfin_write32(SIC_IWR, IWR_ENABLE(0));
84
85 bfin_write16(VR_CTL, val);
86 SSYNC();
87 asm("IDLE;");
88
89 bfin_write32(SIC_IWR, iwr);
90 local_irq_restore(flags);
91}
92#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT) 48#define bfin_read_PLL_STAT() bfin_read16(PLL_STAT)
93#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT,val) 49#define bfin_write_PLL_STAT(val) bfin_write16(PLL_STAT,val)
94#define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT) 50#define bfin_read_PLL_LOCKCNT() bfin_read16(PLL_LOCKCNT)
@@ -1816,4 +1772,51 @@ static __inline__ void bfin_write_VR_CTL(unsigned int val)
1816#define bfin_read_HMDMA1_BCOUNT() bfin_read16(HMDMA1_BCOUNT) 1772#define bfin_read_HMDMA1_BCOUNT() bfin_read16(HMDMA1_BCOUNT)
1817#define bfin_write_HMDMA1_BCOUNT(val) bfin_write16(HMDMA1_BCOUNT,val) 1773#define bfin_write_HMDMA1_BCOUNT(val) bfin_write16(HMDMA1_BCOUNT,val)
1818 1774
1775/* These need to be last due to the cdef/linux inter-dependencies */
1776#include <asm/system.h>
1777
1778/* Writing to PLL_CTL initiates a PLL relock sequence. */
1779static __inline__ void bfin_write_PLL_CTL(unsigned int val)
1780{
1781 unsigned long flags, iwr;
1782
1783 if (val == bfin_read_PLL_CTL())
1784 return;
1785
1786 local_irq_save(flags);
1787 /* Enable the PLL Wakeup bit in SIC IWR */
1788 iwr = bfin_read32(SIC_IWR);
1789 /* Only allow PPL Wakeup) */
1790 bfin_write32(SIC_IWR, IWR_ENABLE(0));
1791
1792 bfin_write16(PLL_CTL, val);
1793 SSYNC();
1794 asm("IDLE;");
1795
1796 bfin_write32(SIC_IWR, iwr);
1797 local_irq_restore(flags);
1798}
1799
1800/* Writing to VR_CTL initiates a PLL relock sequence. */
1801static __inline__ void bfin_write_VR_CTL(unsigned int val)
1802{
1803 unsigned long flags, iwr;
1804
1805 if (val == bfin_read_VR_CTL())
1806 return;
1807
1808 local_irq_save(flags);
1809 /* Enable the PLL Wakeup bit in SIC IWR */
1810 iwr = bfin_read32(SIC_IWR);
1811 /* Only allow PPL Wakeup) */
1812 bfin_write32(SIC_IWR, IWR_ENABLE(0));
1813
1814 bfin_write16(VR_CTL, val);
1815 SSYNC();
1816 asm("IDLE;");
1817
1818 bfin_write32(SIC_IWR, iwr);
1819 local_irq_restore(flags);
1820}
1821
1819#endif /* _CDEF_BF534_H */ 1822#endif /* _CDEF_BF534_H */