imx-common: add i2c.c for bus recovery support

Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com>

1 files changed, 42 insertions, 0 deletions

diff --git a/arch/arm/include/asm/imx-common/mxc_i2c.h b/arch/arm/include/asm/imx-common/mxc_i2c.h
new file mode 100644
index 0000000..9a5187d
--- /dev/null
+++ b/arch/arm/include/asm/imx-common/mxc_i2c.h
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+#ifndef __ASM_ARCH_MXC_MXC_I2C_H__
+#define __ASM_ARCH_MXC_MXC_I2C_H__
+#include <asm/imx-common/iomux-v3.h>
+
+struct i2c_pin_ctrl {
+	iomux_v3_cfg_t i2c_mode;
+	iomux_v3_cfg_t gpio_mode;
+	unsigned char gp;
+	unsigned char spare;
+};
+
+struct i2c_pads_info {
+	struct i2c_pin_ctrl scl;
+	struct i2c_pin_ctrl sda;
+};
+
+void setup_i2c(unsigned i2c_index, int speed, int slave_addr,
+		struct i2c_pads_info *p);
+void bus_i2c_init(void *base, int speed, int slave_addr,
+		int (*idle_bus_fn)(void *p), void *p);
+int bus_i2c_read(void *base, uchar chip, uint addr, int alen, uchar *buf,
+		int len);
+int bus_i2c_write(void *base, uchar chip, uint addr, int alen,
+		const uchar *buf, int len);
+#endif