arch/arm/plat-omap/include/plat/i2c.h

   1 /*
   2  * Helper module for board specific I2C bus registration
   3  *
   4  * Copyright (C) 2009 Nokia Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * version 2 as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  18  * 02110-1301 USA
  19  *
  20  */
  21 #ifndef __ASM__ARCH_OMAP_I2C_H
  22 #define __ASM__ARCH_OMAP_I2C_H
  23
  24 #include <linux/i2c.h>
  25 #include <linux/i2c-omap.h>
  26
  27 #if defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
  28 extern int omap_register_i2c_bus(int bus_id, u32 clkrate,
  29                                  struct i2c_board_info const *info,
  30                                  unsigned len);
  31 #else
  32 static inline int omap_register_i2c_bus(int bus_id, u32 clkrate,
  33                                  struct i2c_board_info const *info,
  34                                  unsigned len)
  35 {
  36         return 0;
  37 }
  38 #endif
  39
  40 /**
  41  * i2c_dev_attr - OMAP I2C controller device attributes for omap_hwmod
  42  * @fifo_depth: total controller FIFO size (in bytes)
  43  * @flags: differences in hardware support capability
  44  *
  45  * @fifo_depth represents what exists on the hardware, not what is
  46  * actually configured at runtime by the device driver.
  47  */
  48 struct omap_i2c_dev_attr {
  49         u8      fifo_depth;
  50         u32     flags;
  51 };
  52
  53 void __init omap1_i2c_mux_pins(int bus_id);
  54 void __init omap2_i2c_mux_pins(int bus_id);
  55
  56 struct omap_hwmod;
  57 int omap_i2c_reset(struct omap_hwmod *oh);
  58
  59 #endif /* __ASM__ARCH_OMAP_I2C_H */