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>

3 files changed, 51 insertions, 0 deletions

diff --git a/include/linux/elf-em.h b/include/linux/elf-em.h
index 666e0a5f00f..0311bad838b 100644
--- a/include/linux/elf-em.h
+++ b/include/linux/elf-em.h
@@ -30,6 +30,7 @@
 #define EM_V850		87	/* NEC v850 */
 #define EM_M32R		88	/* Renesas M32R */
 #define EM_H8_300	46	/* Renesas H8/300,300H,H8S */
+#define EM_BLACKFIN     106     /* ADI Blackfin Processor */
 #define EM_FRV		0x5441	/* Fujitsu FR-V */
 #define EM_AVR32	0x18ad	/* Atmel AVR32 */
 
diff --git a/include/linux/spi/ad7877.h b/include/linux/spi/ad7877.h
new file mode 100644
index 00000000000..cdbed816f25
--- /dev/null
+++ b/include/linux/spi/ad7877.h
@@ -0,0 +1,24 @@
+/* linux/spi/ad7877.h */
+
+/* Touchscreen characteristics vary between boards and models.  The
+ * platform_data for the device's "struct device" holds this information.
+ *
+ * It's OK if the min/max values are zero.
+ */
+struct ad7877_platform_data {
+	u16	model;			/* 7877 */
+	u16	vref_delay_usecs;	/* 0 for external vref; etc */
+	u16	x_plate_ohms;
+	u16	y_plate_ohms;
+
+	u16	x_min, x_max;
+	u16	y_min, y_max;
+	u16	pressure_min, pressure_max;
+
+	u8	stopacq_polarity;	/* 1 = Active HIGH, 0 = Active LOW */
+	u8	first_conversion_delay;	/* 0 = 0.5us, 1 = 128us, 2 = 1ms, 3 = 8ms */
+	u8	acquisition_time;	/* 0 = 2us, 1 = 4us, 2 = 8us, 3 = 16us */
+	u8	averaging;		/* 0 = 1, 1 = 4, 2 = 8, 3 = 16 */
+	u8	pen_down_acc_interval;	/* 0 = covert once, 1 = every 0.5 ms,
+					   2 = ever 1 ms,   3 = every 8 ms,*/
+};
diff --git a/include/linux/usb_sl811.h b/include/linux/usb_sl811.h
new file mode 100644
index 00000000000..4f2d012d730
--- /dev/null
+++ b/include/linux/usb_sl811.h
@@ -0,0 +1,26 @@
+
+/*
+ * board initialization should put one of these into dev->platform_data
+ * and place the sl811hs onto platform_bus named "sl811-hcd".
+ */
+
+struct sl811_platform_data {
+	unsigned	can_wakeup:1;
+
+	/* given port_power, msec/2 after power on till power good */
+	u8		potpg;
+
+	/* mA/2 power supplied on this port (max = default = 250) */
+	u8		power;
+
+	/* sl811 relies on an external source of VBUS current */
+	void 		(*port_power)(struct device *dev, int is_on);
+
+	/* pulse sl811 nRST (probably with a GPIO) */
+	void 		(*reset)(struct device *dev);
+
+	// some boards need something like these:
+ 	// int 		(*check_overcurrent)(struct device *dev);
+ 	// void 	(*clock_enable)(struct device *dev, int is_on);
+};
+