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authorDavid Howells <dhowells@redhat.com>2010-10-07 09:08:49 -0400
committerDavid Howells <dhowells@redhat.com>2010-10-07 09:08:49 -0400
commit3dcc1e7f9fd48f20beefd41a684cd471a96565c5 (patch)
tree02ab916ad68feafdbd3fa5013958c9f4ec6f8457 /arch/blackfin/mach-bf518
parentcb655d0f3d57c23db51b981648e452988c0223f9 (diff)
Blackfin: Split PLL code from mach-specific cdef headers
Split the PLL control code from the Blackfin machine-specific cdef headers so that the irqflags functions can be renamed without incurring a header loop. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'arch/blackfin/mach-bf518')
-rw-r--r--arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h50
-rw-r--r--arch/blackfin/mach-bf518/include/mach/pll.h63
2 files changed, 63 insertions, 50 deletions
diff --git a/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h b/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h
index e548e9d1d6fa..29498e59e71f 100644
--- a/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h
+++ b/arch/blackfin/mach-bf518/include/mach/cdefBF51x_base.h
@@ -1058,54 +1058,4 @@
1058/* These need to be last due to the cdef/linux inter-dependencies */ 1058/* These need to be last due to the cdef/linux inter-dependencies */
1059#include <asm/irq.h> 1059#include <asm/irq.h>
1060 1060
1061/* Writing to PLL_CTL initiates a PLL relock sequence. */
1062static __inline__ void bfin_write_PLL_CTL(unsigned int val)
1063{
1064 unsigned long flags, iwr0, iwr1;
1065
1066 if (val == bfin_read_PLL_CTL())
1067 return;
1068
1069 local_irq_save_hw(flags);
1070 /* Enable the PLL Wakeup bit in SIC IWR */
1071 iwr0 = bfin_read32(SIC_IWR0);
1072 iwr1 = bfin_read32(SIC_IWR1);
1073 /* Only allow PPL Wakeup) */
1074 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
1075 bfin_write32(SIC_IWR1, 0);
1076
1077 bfin_write16(PLL_CTL, val);
1078 SSYNC();
1079 asm("IDLE;");
1080
1081 bfin_write32(SIC_IWR0, iwr0);
1082 bfin_write32(SIC_IWR1, iwr1);
1083 local_irq_restore_hw(flags);
1084}
1085
1086/* Writing to VR_CTL initiates a PLL relock sequence. */
1087static __inline__ void bfin_write_VR_CTL(unsigned int val)
1088{
1089 unsigned long flags, iwr0, iwr1;
1090
1091 if (val == bfin_read_VR_CTL())
1092 return;
1093
1094 local_irq_save_hw(flags);
1095 /* Enable the PLL Wakeup bit in SIC IWR */
1096 iwr0 = bfin_read32(SIC_IWR0);
1097 iwr1 = bfin_read32(SIC_IWR1);
1098 /* Only allow PPL Wakeup) */
1099 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
1100 bfin_write32(SIC_IWR1, 0);
1101
1102 bfin_write16(VR_CTL, val);
1103 SSYNC();
1104 asm("IDLE;");
1105
1106 bfin_write32(SIC_IWR0, iwr0);
1107 bfin_write32(SIC_IWR1, iwr1);
1108 local_irq_restore_hw(flags);
1109}
1110
1111#endif /* _CDEF_BF52X_H */ 1061#endif /* _CDEF_BF52X_H */
diff --git a/arch/blackfin/mach-bf518/include/mach/pll.h b/arch/blackfin/mach-bf518/include/mach/pll.h
new file mode 100644
index 000000000000..9c19a077e91a
--- /dev/null
+++ b/arch/blackfin/mach-bf518/include/mach/pll.h
@@ -0,0 +1,63 @@
1/*
2 * Copyright 2008 Analog Devices Inc.
3 *
4 * Licensed under the GPL-2 or later
5 */
6
7#ifndef _MACH_PLL_H
8#define _MACH_PLL_H
9
10#include <asm/blackfin.h>
11#include <asm/irqflags.h>
12
13/* Writing to PLL_CTL initiates a PLL relock sequence. */
14static __inline__ void bfin_write_PLL_CTL(unsigned int val)
15{
16 unsigned long flags, iwr0, iwr1;
17
18 if (val == bfin_read_PLL_CTL())
19 return;
20
21 local_irq_save_hw(flags);
22 /* Enable the PLL Wakeup bit in SIC IWR */
23 iwr0 = bfin_read32(SIC_IWR0);
24 iwr1 = bfin_read32(SIC_IWR1);
25 /* Only allow PPL Wakeup) */
26 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
27 bfin_write32(SIC_IWR1, 0);
28
29 bfin_write16(PLL_CTL, val);
30 SSYNC();
31 asm("IDLE;");
32
33 bfin_write32(SIC_IWR0, iwr0);
34 bfin_write32(SIC_IWR1, iwr1);
35 local_irq_restore_hw(flags);
36}
37
38/* Writing to VR_CTL initiates a PLL relock sequence. */
39static __inline__ void bfin_write_VR_CTL(unsigned int val)
40{
41 unsigned long flags, iwr0, iwr1;
42
43 if (val == bfin_read_VR_CTL())
44 return;
45
46 local_irq_save_hw(flags);
47 /* Enable the PLL Wakeup bit in SIC IWR */
48 iwr0 = bfin_read32(SIC_IWR0);
49 iwr1 = bfin_read32(SIC_IWR1);
50 /* Only allow PPL Wakeup) */
51 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
52 bfin_write32(SIC_IWR1, 0);
53
54 bfin_write16(VR_CTL, val);
55 SSYNC();
56 asm("IDLE;");
57
58 bfin_write32(SIC_IWR0, iwr0);
59 bfin_write32(SIC_IWR1, iwr1);
60 local_irq_restore_hw(flags);
61}
62
63#endif /* _MACH_PLL_H */