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, 175 insertions, 0 deletions

diff --git a/include/asm-blackfin/bfin_sport.h b/include/asm-blackfin/bfin_sport.h
new file mode 100644
index 000000000000..c76ed8def302
--- /dev/null
+++ b/include/asm-blackfin/bfin_sport.h
@@ -0,0 +1,175 @@
+/*
+ * File:         include/asm-blackfin/bfin_sport.h
+ * Based on:
+ * Author:       Roy Huang (roy.huang@analog.com)
+ *
+ * Created:      Thu Aug. 24 2006
+ * Description:
+ *
+ * Modified:
+ *               Copyright 2004-2006 Analog Devices Inc.
+ *
+ * Bugs:         Enter bugs at http://blackfin.uclinux.org/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see the file COPYING, or write
+ * to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef __BFIN_SPORT_H__
+#define __BFIN_SPORT_H__
+
+#define SPORT_MAJOR	237
+#define SPORT_NR_DEVS	2
+
+/* Sport mode: it can be set to TDM, i2s or others */
+#define NORM_MODE	0x0
+#define TDM_MODE	0x1
+#define I2S_MODE	0x2
+
+/* Data format, normal, a-law or u-law */
+#define NORM_FORMAT	0x0
+#define ALAW_FORMAT	0x2
+#define ULAW_FORMAT	0x3
+struct sport_register;
+
+/* Function driver which use sport must initialize the structure */
+struct sport_config {
+	/*TDM (multichannels), I2S or other mode */
+	unsigned int mode:3;
+
+	/* if TDM mode is selected, channels must be set */
+	int channels;		/* Must be in 8 units */
+	unsigned int frame_delay:4;	/* Delay between frame sync pulse and first bit */
+
+	/* I2S mode */
+	unsigned int right_first:1;	/* Right stereo channel first */
+
+	/* In mormal mode, the following item need to be set */
+	unsigned int lsb_first:1;	/* order of transmit or receive data */
+	unsigned int fsync:1;	/* Frame sync required */
+	unsigned int data_indep:1;	/* data independent frame sync generated */
+	unsigned int act_low:1;	/* Active low TFS */
+	unsigned int late_fsync:1;	/* Late frame sync */
+	unsigned int tckfe:1;
+	unsigned int sec_en:1;	/* Secondary side enabled */
+
+	/* Choose clock source */
+	unsigned int int_clk:1;	/* Internal or external clock */
+
+	/* If external clock is used, the following fields are ignored */
+	int serial_clk;
+	int fsync_clk;
+
+	unsigned int data_format:2;	/*Normal, u-law or a-law */
+
+	int word_len;		/* How length of the word in bits, 3-32 bits */
+	int dma_enabled;
+};
+
+struct sport_register {
+	unsigned short tcr1;
+	unsigned short reserved0;
+	unsigned short tcr2;
+	unsigned short reserved1;
+	unsigned short tclkdiv;
+	unsigned short reserved2;
+	unsigned short tfsdiv;
+	unsigned short reserved3;
+	unsigned long tx;
+	unsigned long reserved_l0;
+	unsigned long rx;
+	unsigned long reserved_l1;
+	unsigned short rcr1;
+	unsigned short reserved4;
+	unsigned short rcr2;
+	unsigned short reserved5;
+	unsigned short rclkdiv;
+	unsigned short reserved6;
+	unsigned short rfsdiv;
+	unsigned short reserved7;
+	unsigned short stat;
+	unsigned short reserved8;
+	unsigned short chnl;
+	unsigned short reserved9;
+	unsigned short mcmc1;
+	unsigned short reserved10;
+	unsigned short mcmc2;
+	unsigned short reserved11;
+	unsigned long mtcs0;
+	unsigned long mtcs1;
+	unsigned long mtcs2;
+	unsigned long mtcs3;
+	unsigned long mrcs0;
+	unsigned long mrcs1;
+	unsigned long mrcs2;
+	unsigned long mrcs3;
+};
+
+#define SPORT_IOC_MAGIC		'P'
+#define SPORT_IOC_CONFIG	_IOWR('P', 0x01, struct sport_config)
+
+/* Test purpose */
+#define ENABLE_AD73311		_IOWR('P', 0x02, int)
+
+struct sport_dev {
+	struct cdev cdev;	/* Char device structure */
+
+	int sport_num;
+
+	int dma_rx_chan;
+	int dma_tx_chan;
+
+	int rx_irq;
+	unsigned char *rx_buf;	/* Buffer store the received data */
+	int rx_len;		/* How many bytes will be received */
+	int rx_received;	/* How many bytes has been received */
+
+	int tx_irq;
+	const unsigned char *tx_buf;
+	int tx_len;
+	int tx_sent;
+
+	int sport_err_irq;
+
+	struct mutex mutex;	/* mutual exclusion semaphore */
+	struct task_struct *task;
+
+	wait_queue_head_t waitq;
+	int	wait_con;
+	struct sport_register *regs;
+	struct sport_config config;
+};
+
+#define SPORT_TCR1	0
+#define	SPORT_TCR2	1
+#define	SPORT_TCLKDIV	2
+#define	SPORT_TFSDIV	3
+#define	SPORT_RCR1	8
+#define	SPORT_RCR2	9
+#define SPORT_RCLKDIV	10
+#define	SPORT_RFSDIV	11
+#define SPORT_CHANNEL	13
+#define SPORT_MCMC1	14
+#define SPORT_MCMC2	15
+#define SPORT_MTCS0	16
+#define SPORT_MTCS1	17
+#define SPORT_MTCS2	18
+#define SPORT_MTCS3	19
+#define SPORT_MRCS0	20
+#define SPORT_MRCS1	21
+#define SPORT_MRCS2	22
+#define SPORT_MRCS3	23
+
+#endif				/*__BFIN_SPORT_H__*/