mirror of https://gitee.com/openkylin/linux.git
57 lines
1.6 KiB
C
57 lines
1.6 KiB
C
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/*
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* Helper module for board specific I2C bus registration
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*
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* Copyright (C) 2009 Nokia Corporation.
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*
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* This program 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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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*
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*/
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#include <plat/cpu.h>
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#include <plat/i2c.h>
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#include <plat/mux.h>
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#include "mux.h"
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int __init omap_register_i2c_bus(int bus_id, u32 clkrate,
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struct i2c_board_info const *info,
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unsigned len)
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{
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if (cpu_is_omap24xx()) {
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const int omap24xx_pins[][2] = {
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{ M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA },
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{ J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA },
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};
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int scl, sda;
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scl = omap24xx_pins[bus_id - 1][0];
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sda = omap24xx_pins[bus_id - 1][1];
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omap_cfg_reg(sda);
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omap_cfg_reg(scl);
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}
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/* First I2C bus is not muxable */
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if (cpu_is_omap34xx() && bus_id > 1) {
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char mux_name[sizeof("i2c2_scl.i2c2_scl")];
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sprintf(mux_name, "i2c%i_scl.i2c%i_scl", bus_id, bus_id);
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omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
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sprintf(mux_name, "i2c%i_sda.i2c%i_sda", bus_id, bus_id);
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omap_mux_init_signal(mux_name, OMAP_PIN_INPUT);
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}
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return omap_plat_register_i2c_bus(bus_id, clkrate, info, len);
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}
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