xref: /openbmc/linux/arch/arm/mach-omap2/i2c.c (revision b595076a)
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 
22 #include <plat/cpu.h>
23 #include <plat/i2c.h>
24 
25 #include "mux.h"
26 
27 void __init omap2_i2c_mux_pins(int bus_id)
28 {
29 	char mux_name[sizeof("i2c2_scl.i2c2_scl")];
30 
31 	/* First I2C bus is not muxable */
32 	if (bus_id == 1)
33 		return;
34 
35 	sprintf(mux_name, "i2c%i_scl.i2c%i_scl", bus_id, bus_id);
36 	omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
37 	sprintf(mux_name, "i2c%i_sda.i2c%i_sda", bus_id, bus_id);
38 	omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
39 }
40