From 392a0408fdc4c9069c32a9a02b0088eae76c4618 Mon Sep 17 00:00:00 2001 From: "Maciej W. Rozycki" Date: Mon, 14 Jul 2008 22:38:33 +0200 Subject: i2c-sibyte: SWARM I2C board initialization The standard rtc-m41t80.c driver cannot be used with the SWARM as it is, because the board does not provide setup information for the I2C core. As a result the bus and the address to probe for the M41T80 chip is not known. Here is a set of changes that fix the problem: 1. swarm-i2c.c -- SWARM I2C board setup, currently for the M41T80 chip on the bus #1 only (there is a MAX6654 temperature sensor on the bus #0 which may be added in the future if we have a driver for that chip). 2. The i2c-sibyte.c BCM1250A SMBus controller driver now registers its buses as numbered so that board setup is correctly applied. Signed-off-by: Maciej W. Rozycki Signed-off-by: Jean Delvare --- arch/mips/sibyte/swarm/Makefile | 1 + arch/mips/sibyte/swarm/swarm-i2c.c | 37 +++++++++++++++++++++++++++++++++++++ 2 files changed, 38 insertions(+) create mode 100644 arch/mips/sibyte/swarm/swarm-i2c.c (limited to 'arch/mips/sibyte') diff --git a/arch/mips/sibyte/swarm/Makefile b/arch/mips/sibyte/swarm/Makefile index 1775755a261..255d692bfa1 100644 --- a/arch/mips/sibyte/swarm/Makefile +++ b/arch/mips/sibyte/swarm/Makefile @@ -1,3 +1,4 @@ obj-y := setup.o rtc_xicor1241.o rtc_m41t81.o +obj-$(CONFIG_I2C_BOARDINFO) += swarm-i2c.o obj-$(CONFIG_KGDB) += dbg_io.o diff --git a/arch/mips/sibyte/swarm/swarm-i2c.c b/arch/mips/sibyte/swarm/swarm-i2c.c new file mode 100644 index 00000000000..4282ac9d01d --- /dev/null +++ b/arch/mips/sibyte/swarm/swarm-i2c.c @@ -0,0 +1,37 @@ +/* + * arch/mips/sibyte/swarm/swarm-i2c.c + * + * Broadcom BCM91250A (SWARM), etc. I2C platform setup. + * + * Copyright (c) 2008 Maciej W. Rozycki + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include +#include +#include + + +static struct i2c_board_info swarm_i2c_info1[] __initdata = { + { + I2C_BOARD_INFO("m41t81", 0x68), + }, +}; + +static int __init swarm_i2c_init(void) +{ + int err; + + err = i2c_register_board_info(1, swarm_i2c_info1, + ARRAY_SIZE(swarm_i2c_info1)); + if (err < 0) + printk(KERN_ERR + "swarm-i2c: cannot register board I2C devices\n"); + return err; +} + +arch_initcall(swarm_i2c_init); -- cgit v1.2.3