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authorOlof Johansson <olof@lixom.net>2012-11-26 01:09:30 -0800
committerOlof Johansson <olof@lixom.net>2012-11-26 01:09:53 -0800
commit0dfeada90989833d0144b4df25d2b9ce3746624f (patch)
tree0773c2f81a94ca99b8b07b0d984754c81fdd16cc /arch/mips/lib/bitops.c
parentd408c5dcc524dfc8e687c443719a3d6be86e2ea0 (diff)
parent2a18588c0ce336933be3c99c91e74e21db56a0fe (diff)
Merge tag 'orion_dt_for_3.8' of git://git.infradead.org/users/jcooper/linux into next/dt
From Jason Cooper: orion dt for v3.8 - ehci-orion dt binding - gpio-poweroff - use dt regulators - move mpp to DT/pinctrl Depends on: - orion/boards - merge conflicts - keep all 'select's in Kconfig - remove all #includes in board-*.c - pinctrl/devel up to: - 06763c7 pinctrl: mvebu: move to its own directory * tag 'orion_dt_for_3.8' of git://git.infradead.org/users/jcooper/linux: (211 commits) ARM: Kirkwood: remove kirkwood_ehci_init() from new boards ARM: Kirkwood: Add support LED of OpenBlocks A6 ARM: Kirkwood: Convert to EHCI via DT for OpenBlocks A6 ARM: kirkwood: Add NAND partiton map for OpenBlocks A6 ARM: kirkwood: Add support second I2C bus and RTC on OpenBlocks A6 ARM: kirkwood: Add support DT of second I2C bus ARM: kirkwood: Convert mplcec4 board to pinctrl ARM: Kirkwood: Convert km_kirkwood to pinctrl ARM: Kirkwood: support 98DX412x kirkwoods with pinctrl ARM: Kirkwood: Convert IX2-200 to pinctrl. ARM: Kirkwood: Convert lsxl boards to pinctrl. ARM: Kirkwood: Convert ib62x0 to pinctrl. ARM: Kirkwood: Convert GoFlex Net to pinctrl. ARM: Kirkwood: Convert dreamplug to pinctrl. ARM: Kirkwood: Convert dockstar to pinctrl. ARM: Kirkwood: Convert dnskw to pinctrl ARM: Kirkwood: Convert iConnect to pinctrl. ARM: Kirkwood: Convert TS219 to pinctrl. ARM: Kirkwood: Add DTSI files for pinctrl ARM: Kirkwood: Make use of mvebu pincltl and gpio drivers ... Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'arch/mips/lib/bitops.c')
-rw-r--r--arch/mips/lib/bitops.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/arch/mips/lib/bitops.c b/arch/mips/lib/bitops.c
new file mode 100644
index 000000000000..239a9c957b02
--- /dev/null
+++ b/arch/mips/lib/bitops.c
@@ -0,0 +1,179 @@
+/*
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1994-1997, 99, 2000, 06, 07 Ralf Baechle (ralf@linux-mips.org)
+ * Copyright (c) 1999, 2000 Silicon Graphics, Inc.
+ */
+#include <linux/bitops.h>
+#include <linux/irqflags.h>
+#include <linux/export.h>
+
+
+/**
+ * __mips_set_bit - Atomically set a bit in memory. This is called by
+ * set_bit() if it cannot find a faster solution.
+ * @nr: the bit to set
+ * @addr: the address to start counting from
+ */
+void __mips_set_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ *a |= mask;
+ raw_local_irq_restore(flags);
+}
+EXPORT_SYMBOL(__mips_set_bit);
+
+
+/**
+ * __mips_clear_bit - Clears a bit in memory. This is called by clear_bit() if
+ * it cannot find a faster solution.
+ * @nr: Bit to clear
+ * @addr: Address to start counting from
+ */
+void __mips_clear_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ *a &= ~mask;
+ raw_local_irq_restore(flags);
+}
+EXPORT_SYMBOL(__mips_clear_bit);
+
+
+/**
+ * __mips_change_bit - Toggle a bit in memory. This is called by change_bit()
+ * if it cannot find a faster solution.
+ * @nr: Bit to change
+ * @addr: Address to start counting from
+ */
+void __mips_change_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ *a ^= mask;
+ raw_local_irq_restore(flags);
+}
+EXPORT_SYMBOL(__mips_change_bit);
+
+
+/**
+ * __mips_test_and_set_bit - Set a bit and return its old value. This is
+ * called by test_and_set_bit() if it cannot find a faster solution.
+ * @nr: Bit to set
+ * @addr: Address to count from
+ */
+int __mips_test_and_set_bit(unsigned long nr,
+ volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+ unsigned long res;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ res = (mask & *a);
+ *a |= mask;
+ raw_local_irq_restore(flags);
+ return res;
+}
+EXPORT_SYMBOL(__mips_test_and_set_bit);
+
+
+/**
+ * __mips_test_and_set_bit_lock - Set a bit and return its old value. This is
+ * called by test_and_set_bit_lock() if it cannot find a faster solution.
+ * @nr: Bit to set
+ * @addr: Address to count from
+ */
+int __mips_test_and_set_bit_lock(unsigned long nr,
+ volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+ unsigned long res;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ res = (mask & *a);
+ *a |= mask;
+ raw_local_irq_restore(flags);
+ return res;
+}
+EXPORT_SYMBOL(__mips_test_and_set_bit_lock);
+
+
+/**
+ * __mips_test_and_clear_bit - Clear a bit and return its old value. This is
+ * called by test_and_clear_bit() if it cannot find a faster solution.
+ * @nr: Bit to clear
+ * @addr: Address to count from
+ */
+int __mips_test_and_clear_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+ unsigned long res;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ res = (mask & *a);
+ *a &= ~mask;
+ raw_local_irq_restore(flags);
+ return res;
+}
+EXPORT_SYMBOL(__mips_test_and_clear_bit);
+
+
+/**
+ * __mips_test_and_change_bit - Change a bit and return its old value. This is
+ * called by test_and_change_bit() if it cannot find a faster solution.
+ * @nr: Bit to change
+ * @addr: Address to count from
+ */
+int __mips_test_and_change_bit(unsigned long nr, volatile unsigned long *addr)
+{
+ volatile unsigned long *a = addr;
+ unsigned bit = nr & SZLONG_MASK;
+ unsigned long mask;
+ unsigned long flags;
+ unsigned long res;
+
+ a += nr >> SZLONG_LOG;
+ mask = 1UL << bit;
+ raw_local_irq_save(flags);
+ res = (mask & *a);
+ *a ^= mask;
+ raw_local_irq_restore(flags);
+ return res;
+}
+EXPORT_SYMBOL(__mips_test_and_change_bit);