blackfin architecture

This adds support for the Analog Devices Blackfin processor architecture, and
currently supports the BF533, BF532, BF531, BF537, BF536, BF534, and BF561
(Dual Core) devices, with a variety of development platforms including those
avaliable from Analog Devices (BF533-EZKit, BF533-STAMP, BF537-STAMP,
BF561-EZKIT), and Bluetechnix!  Tinyboards.

The Blackfin architecture was jointly developed by Intel and Analog Devices
Inc.  (ADI) as the Micro Signal Architecture (MSA) core and introduced it in
December of 2000.  Since then ADI has put this core into its Blackfin
processor family of devices.  The Blackfin core has the advantages of a clean,
orthogonal,RISC-like microprocessor instruction set.  It combines a dual-MAC
(Multiply/Accumulate), state-of-the-art signal processing engine and
single-instruction, multiple-data (SIMD) multimedia capabilities into a single
instruction-set architecture.

The Blackfin architecture, including the instruction set, is described by the
ADSP-BF53x/BF56x Blackfin Processor Programming Reference
http://blackfin.uclinux.org/gf/download/frsrelease/29/2549/Blackfin_PRM.pdf

The Blackfin processor is already supported by major releases of gcc, and
there are binary and source rpms/tarballs for many architectures at:
http://blackfin.uclinux.org/gf/project/toolchain/frs There is complete
documentation, including "getting started" guides available at:
http://docs.blackfin.uclinux.org/ which provides links to the sources and
patches you will need in order to set up a cross-compiling environment for
bfin-linux-uclibc

This patch, as well as the other patches (toolchain, distribution,
uClibc) are actively supported by Analog Devices Inc, at:
http://blackfin.uclinux.org/

We have tested this on LTP, and our test plan (including pass/fails) can
be found at:
http://docs.blackfin.uclinux.org/doku.php?id=testing_the_linux_kernel

[m.kozlowski@tuxland.pl: balance parenthesis in blackfin header files]
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Aubrey Li <aubrey.li@analog.com>
Signed-off-by: Jie Zhang <jie.zhang@analog.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 70 insertions, 0 deletions

diff --git a/include/asm-blackfin/dpmc.h b/include/asm-blackfin/dpmc.h
new file mode 100644
index 00000000000..f162edb2303
--- /dev/null
+++ b/include/asm-blackfin/dpmc.h
@@ -0,0 +1,70 @@
+/*
+ * include/asm-blackfin/dpmc.h -  Miscellaneous IOCTL commands for Dynamic Power
+ *   			 	Management Controller Driver.
+ * Copyright (C) 2004 Analog Device Inc.
+ *
+ */
+#ifndef _BLACKFIN_DPMC_H_
+#define _BLACKFIN_DPMC_H_
+
+#define SLEEP_MODE		1
+#define DEEP_SLEEP_MODE		2
+#define ACTIVE_PLL_DISABLED	3
+#define FULLON_MODE		4
+#define ACTIVE_PLL_ENABLED	5
+#define HIBERNATE_MODE		6
+
+#define IOCTL_FULL_ON_MODE	_IO('s', 0xA0)
+#define IOCTL_ACTIVE_MODE	_IO('s', 0xA1)
+#define IOCTL_SLEEP_MODE	_IO('s', 0xA2)
+#define IOCTL_DEEP_SLEEP_MODE	_IO('s', 0xA3)
+#define IOCTL_HIBERNATE_MODE	_IO('s', 0xA4)
+#define IOCTL_CHANGE_FREQUENCY	_IOW('s', 0xA5, unsigned long)
+#define IOCTL_CHANGE_VOLTAGE	_IOW('s', 0xA6, unsigned long)
+#define IOCTL_SET_CCLK		_IOW('s', 0xA7, unsigned long)
+#define IOCTL_SET_SCLK		_IOW('s', 0xA8, unsigned long)
+#define IOCTL_GET_PLLSTATUS	_IOW('s', 0xA9, unsigned long)
+#define IOCTL_GET_CORECLOCK	_IOW('s', 0xAA, unsigned long)
+#define IOCTL_GET_SYSTEMCLOCK	_IOW('s', 0xAB, unsigned long)
+#define IOCTL_GET_VCO		_IOW('s', 0xAC, unsigned long)
+#define IOCTL_DISABLE_WDOG_TIMER _IO('s', 0xAD)
+#define IOCTL_UNMASK_WDOG_WAKEUP_EVENT _IO('s',0xAE)
+#define IOCTL_PROGRAM_WDOG_TIMER _IOW('s',0xAF,unsigned long)
+#define IOCTL_CLEAR_WDOG_WAKEUP_EVENT _IO('s',0xB0)
+#define IOCTL_SLEEP_DEEPER_MODE _IO('s',0xB1)
+
+#define DPMC_MINOR		254
+
+#define ON	0
+#define OFF	1
+
+#ifdef __KERNEL__
+
+unsigned long calc_volt(void);
+int calc_vlev(int vlt);
+unsigned long change_voltage(unsigned long volt);
+int calc_msel(int vco_hz);
+unsigned long change_frequency(unsigned long vco_mhz);
+int set_pll_div(unsigned short sel, unsigned char flag);
+int get_vco(void);
+unsigned long change_system_clock(unsigned long clock);
+unsigned long change_core_clock(unsigned long clock);
+unsigned long get_pll_status(void);
+void change_baud(int baud);
+void fullon_mode(void);
+void active_mode(void);
+void sleep_mode(u32 sic_iwr);
+void deep_sleep(u32 sic_iwr);
+void hibernate_mode(u32 sic_iwr);
+void sleep_deeper(u32 sic_iwr);
+void program_wdog_timer(unsigned long);
+void unmask_wdog_wakeup_evt(void);
+void clear_wdog_wakeup_evt(void);
+void disable_wdog_timer(void);
+
+extern unsigned long get_cclk(void);
+extern unsigned long get_sclk(void);
+
+#endif	/* __KERNEL__ */
+
+#endif	/*_BLACKFIN_DPMC_H_*/