forked from luck/tmp_suning_uos_patched
f0bb60e7b1
Files that don't use CONFIG_* stuff shouldn't include config.h Files that use CONFIG_* stuff should include config.h It's that simple. ;-) Signed-off-by: Alexey Dobriyan <adobriyan@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
86 lines
1.8 KiB
C
86 lines
1.8 KiB
C
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/*
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* linux/drivers/i2c/i2c-frodo.c
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*
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* Author: Abraham van der Merwe <abraham@2d3d.co.za>
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*
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* An I2C adapter driver for the 2d3D, Inc. StrongARM SA-1110
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* Development board (Frodo).
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*
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* This source code is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*/
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/delay.h>
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include <asm/hardware.h>
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static void frodo_setsda (void *data,int state)
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{
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if (state)
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FRODO_CPLD_I2C |= FRODO_I2C_SDA_OUT;
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else
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FRODO_CPLD_I2C &= ~FRODO_I2C_SDA_OUT;
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}
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static void frodo_setscl (void *data,int state)
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{
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if (state)
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FRODO_CPLD_I2C |= FRODO_I2C_SCL_OUT;
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else
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FRODO_CPLD_I2C &= ~FRODO_I2C_SCL_OUT;
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}
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static int frodo_getsda (void *data)
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{
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return ((FRODO_CPLD_I2C & FRODO_I2C_SDA_IN) != 0);
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}
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static int frodo_getscl (void *data)
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{
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return ((FRODO_CPLD_I2C & FRODO_I2C_SCL_IN) != 0);
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}
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static struct i2c_algo_bit_data bit_frodo_data = {
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.setsda = frodo_setsda,
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.setscl = frodo_setscl,
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.getsda = frodo_getsda,
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.getscl = frodo_getscl,
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.udelay = 80,
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.mdelay = 80,
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.timeout = HZ
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};
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static struct i2c_adapter frodo_ops = {
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.owner = THIS_MODULE,
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.id = I2C_HW_B_FRODO,
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.algo_data = &bit_frodo_data,
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.dev = {
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.name = "Frodo adapter driver",
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},
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};
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static int __init i2c_frodo_init (void)
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{
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return i2c_bit_add_bus(&frodo_ops);
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}
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static void __exit i2c_frodo_exit (void)
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{
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i2c_bit_del_bus(&frodo_ops);
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}
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MODULE_AUTHOR ("Abraham van der Merwe <abraham@2d3d.co.za>");
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MODULE_DESCRIPTION ("I2C-Bus adapter routines for Frodo");
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MODULE_LICENSE ("GPL");
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module_init (i2c_frodo_init);
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module_exit (i2c_frodo_exit);
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