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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-bf527
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-bf527')
-rw-r--r--arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h50
-rw-r--r--arch/blackfin/mach-bf527/include/mach/pll.h63
2 files changed, 63 insertions, 50 deletions
diff --git a/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h b/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h
index 12f2ad45314e..11fb27bc427d 100644
--- a/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h
+++ b/arch/blackfin/mach-bf527/include/mach/cdefBF52x_base.h
@@ -1110,54 +1110,4 @@
1110/* These need to be last due to the cdef/linux inter-dependencies */ 1110/* These need to be last due to the cdef/linux inter-dependencies */
1111#include <asm/irq.h> 1111#include <asm/irq.h>
1112 1112
1113/* Writing to PLL_CTL initiates a PLL relock sequence. */
1114static __inline__ void bfin_write_PLL_CTL(unsigned int val)
1115{
1116 unsigned long flags, iwr0, iwr1;
1117
1118 if (val == bfin_read_PLL_CTL())
1119 return;
1120
1121 local_irq_save_hw(flags);
1122 /* Enable the PLL Wakeup bit in SIC IWR */
1123 iwr0 = bfin_read32(SIC_IWR0);
1124 iwr1 = bfin_read32(SIC_IWR1);
1125 /* Only allow PPL Wakeup) */
1126 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
1127 bfin_write32(SIC_IWR1, 0);
1128
1129 bfin_write16(PLL_CTL, val);
1130 SSYNC();
1131 asm("IDLE;");
1132
1133 bfin_write32(SIC_IWR0, iwr0);
1134 bfin_write32(SIC_IWR1, iwr1);
1135 local_irq_restore_hw(flags);
1136}
1137
1138/* Writing to VR_CTL initiates a PLL relock sequence. */
1139static __inline__ void bfin_write_VR_CTL(unsigned int val)
1140{
1141 unsigned long flags, iwr0, iwr1;
1142
1143 if (val == bfin_read_VR_CTL())
1144 return;
1145
1146 local_irq_save_hw(flags);
1147 /* Enable the PLL Wakeup bit in SIC IWR */
1148 iwr0 = bfin_read32(SIC_IWR0);
1149 iwr1 = bfin_read32(SIC_IWR1);
1150 /* Only allow PPL Wakeup) */
1151 bfin_write32(SIC_IWR0, IWR_ENABLE(0));
1152 bfin_write32(SIC_IWR1, 0);
1153
1154 bfin_write16(VR_CTL, val);
1155 SSYNC();
1156 asm("IDLE;");
1157
1158 bfin_write32(SIC_IWR0, iwr0);
1159 bfin_write32(SIC_IWR1, iwr1);
1160 local_irq_restore_hw(flags);
1161}
1162
1163#endif /* _CDEF_BF52X_H */ 1113#endif /* _CDEF_BF52X_H */
diff --git a/arch/blackfin/mach-bf527/include/mach/pll.h b/arch/blackfin/mach-bf527/include/mach/pll.h
new file mode 100644
index 000000000000..a9105226a994
--- /dev/null
+++ b/arch/blackfin/mach-bf527/include/mach/pll.h
@@ -0,0 +1,63 @@
1/*
2 * Copyright 2007-2008 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 */