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authorJon Loeliger <jdl@freescale.com>2006-10-19 11:02:16 -0500
committerJon Loeliger <jdl@freescale.com>2006-10-19 11:34:11 -0500
commit7237c033b02fe295880435f1eb80819a0c987532 (patch)
treec5fdba3041052213880ed6a22ac4500f326a5e68 /include/asm-ppc/fsl_i2c.h
parent13a7fcdf37f6ea9429ae04c9df67f893364cfe4b (diff)
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Moved i2c driver out of cpu/mpc86xx/i2c.c into drivers/fsl_i2c.c
in an effort to begin to unify the umpteen FSL I2C drivers that are all otherwise very similar. Signed-off-by: Jon Loeliger <jdl@freescale.com>
Diffstat (limited to 'include/asm-ppc/fsl_i2c.h')
-rw-r--r--include/asm-ppc/fsl_i2c.h90
1 files changed, 90 insertions, 0 deletions
diff --git a/include/asm-ppc/fsl_i2c.h b/include/asm-ppc/fsl_i2c.h
new file mode 100644
index 0000000..76b1c43
--- /dev/null
+++ b/include/asm-ppc/fsl_i2c.h
@@ -0,0 +1,90 @@
+/*
+ * Freescale I2C Controller
+ *
+ * Copyright 2006 Freescale Semiconductor, Inc.
+ *
+ * Based on earlier versions by Gleb Natapov <gnatapov@mrv.com>,
+ * Xianghua Xiao <x.xiao@motorola.com>, Eran Liberty (liberty@freescale.com),
+ * and Jeff Brown.
+ * Some bits are taken from linux driver writen by adrian@humboldt.co.uk.
+ *
+ * This software may be used and distributed according to the
+ * terms of the GNU Public License, Version 2, incorporated
+ * herein by reference.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * Version 2 as published by the Free Software Foundation.
+ *
+ * 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, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef _ASM_FSL_I2C_H_
+#define _ASM_FSL_I2C_H_
+
+#include <asm/types.h>
+
+typedef struct fsl_i2c {
+
+ u8 adr; /* I2C slave address */
+ u8 res0[3];
+#define I2C_ADR 0xFE
+#define I2C_ADR_SHIFT 1
+#define I2C_ADR_RES ~(I2C_ADR)
+
+ u8 fdr; /* I2C frequency divider register */
+ u8 res1[3];
+#define IC2_FDR 0x3F
+#define IC2_FDR_SHIFT 0
+#define IC2_FDR_RES ~(IC2_FDR)
+
+ u8 cr; /* I2C control redister */
+ u8 res2[3];
+#define I2C_CR_MEN 0x80
+#define I2C_CR_MIEN 0x40
+#define I2C_CR_MSTA 0x20
+#define I2C_CR_MTX 0x10
+#define I2C_CR_TXAK 0x08
+#define I2C_CR_RSTA 0x04
+#define I2C_CR_BCST 0x01
+
+ u8 sr; /* I2C status register */
+ u8 res3[3];
+#define I2C_SR_MCF 0x80
+#define I2C_SR_MAAS 0x40
+#define I2C_SR_MBB 0x20
+#define I2C_SR_MAL 0x10
+#define I2C_SR_BCSTM 0x08
+#define I2C_SR_SRW 0x04
+#define I2C_SR_MIF 0x02
+#define I2C_SR_RXAK 0x01
+
+ u8 dr; /* I2C data register */
+ u8 res4[3];
+#define I2C_DR 0xFF
+#define I2C_DR_SHIFT 0
+#define I2C_DR_RES ~(I2C_DR)
+
+ u8 dfsrr; /* I2C digital filter sampling rate register */
+ u8 res5[3];
+#define I2C_DFSRR 0x3F
+#define I2C_DFSRR_SHIFT 0
+#define I2C_DFSRR_RES ~(I2C_DR)
+
+ /* Fill out the reserved block */
+ u8 res6[0xE8];
+} fsl_i2c_t;
+
+
+#define I2C_READ 1
+#define I2C_WRITE 0
+
+#endif /* _ASM_I2C_H_ */