From cc54a0f7cccf976d350801d39c406e75465ebdd1 Mon Sep 17 00:00:00 2001 From: Troy Kisky Date: Thu, 19 Jul 2012 08:18:25 +0000 Subject: imx-common: add i2c.c for bus recovery support Signed-off-by: Troy Kisky --- arch/arm/include/asm/imx-common/mxc_i2c.h | 42 +++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 arch/arm/include/asm/imx-common/mxc_i2c.h (limited to 'arch/arm/include/asm/imx-common/mxc_i2c.h') 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 + +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 -- cgit v1.1