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| author | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-11-16 11:06:22 -0800 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2010-11-16 11:06:22 -0800 |
| commit | 20b4755e4fbb226eb42951bd40b53fcbce9ef944 (patch) | |
| tree | 43da70e0b32ee423d3643ecd422821383411ab72 /arch/blackfin/mach-bf561/include/mach/pll.h | |
| parent | 744f9f104ea262de1dc3e29265870c649f0d9473 (diff) | |
| parent | e53beacd23d9cb47590da6a7a7f6d417b941a994 (diff) | |
Merge commit 'v2.6.37-rc2' into upstream/xenfs
* commit 'v2.6.37-rc2': (10093 commits)
Linux 2.6.37-rc2
capabilities/syslog: open code cap_syslog logic to fix build failure
i2c: Sanity checks on adapter registration
i2c: Mark i2c_adapter.id as deprecated
i2c: Drivers shouldn't include <linux/i2c-id.h>
i2c: Delete unused adapter IDs
i2c: Remove obsolete cleanup for clientdata
include/linux/kernel.h: Move logging bits to include/linux/printk.h
Fix gcc 4.5.1 miscompiling drivers/char/i8k.c (again)
hwmon: (w83795) Check for BEEP pin availability
hwmon: (w83795) Clear intrusion alarm immediately
hwmon: (w83795) Read the intrusion state properly
hwmon: (w83795) Print the actual temperature channels as sources
hwmon: (w83795) List all usable temperature sources
hwmon: (w83795) Expose fan control method
hwmon: (w83795) Fix fan control mode attributes
hwmon: (lm95241) Check validity of input values
hwmon: Change mail address of Hans J. Koch
PCI: sysfs: fix printk warnings
GFS2: Fix inode deallocation race
...
Diffstat (limited to 'arch/blackfin/mach-bf561/include/mach/pll.h')
| -rw-r--r-- | arch/blackfin/mach-bf561/include/mach/pll.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf561/include/mach/pll.h b/arch/blackfin/mach-bf561/include/mach/pll.h new file mode 100644 index 000000000000..f2b1fbdb8e72 --- /dev/null +++ b/arch/blackfin/mach-bf561/include/mach/pll.h @@ -0,0 +1,63 @@ +/* + * Copyright 2005-2009 Analog Devices Inc. + * + * Licensed under the GPL-2 or later. + */ + +#ifndef _MACH_PLL_H +#define _MACH_PLL_H + +#include <asm/blackfin.h> +#include <asm/irqflags.h> + +/* Writing to PLL_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_PLL_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_PLL_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + 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(PLL_CTL, val); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SICA_IWR0, iwr0); + bfin_write32(SICA_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +/* Writing to VR_CTL initiates a PLL relock sequence. */ +static __inline__ void bfin_write_VR_CTL(unsigned int val) +{ + unsigned long flags, iwr0, iwr1; + + if (val == bfin_read_VR_CTL()) + return; + + flags = hard_local_irq_save(); + /* Enable the PLL Wakeup bit in SIC IWR */ + 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); + SSYNC(); + asm("IDLE;"); + + bfin_write32(SICA_IWR0, iwr0); + bfin_write32(SICA_IWR1, iwr1); + hard_local_irq_restore(flags); +} + +#endif /* _MACH_PLL_H */ |