| Tony Lindgren | b63128e | 2009-12-11 16:16:32 -0800 | [diff] [blame] | 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 | #include <plat/mux.h> |
| 25 | |
| 26 | #include "mux.h" |
| 27 | |
| 28 | int __init omap_register_i2c_bus(int bus_id, u32 clkrate, |
| 29 | struct i2c_board_info const *info, |
| 30 | unsigned len) |
| 31 | { |
| 32 | if (cpu_is_omap24xx()) { |
| 33 | const int omap24xx_pins[][2] = { |
| 34 | { M19_24XX_I2C1_SCL, L15_24XX_I2C1_SDA }, |
| 35 | { J15_24XX_I2C2_SCL, H19_24XX_I2C2_SDA }, |
| 36 | }; |
| 37 | int scl, sda; |
| 38 | |
| 39 | scl = omap24xx_pins[bus_id - 1][0]; |
| 40 | sda = omap24xx_pins[bus_id - 1][1]; |
| 41 | omap_cfg_reg(sda); |
| 42 | omap_cfg_reg(scl); |
| 43 | } |
| 44 | |
| 45 | /* First I2C bus is not muxable */ |
| 46 | if (cpu_is_omap34xx() && bus_id > 1) { |
| 47 | char mux_name[sizeof("i2c2_scl.i2c2_scl")]; |
| 48 | |
| 49 | sprintf(mux_name, "i2c%i_scl.i2c%i_scl", bus_id, bus_id); |
| 50 | omap_mux_init_signal(mux_name, OMAP_PIN_INPUT); |
| 51 | sprintf(mux_name, "i2c%i_sda.i2c%i_sda", bus_id, bus_id); |
| 52 | omap_mux_init_signal(mux_name, OMAP_PIN_INPUT); |
| 53 | } |
| 54 | |
| 55 | return omap_plat_register_i2c_bus(bus_id, clkrate, info, len); |
| 56 | } |