From 838c5a5d8019eff857dac21c24a2bca624fa3152 Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Sun, 17 Jan 2010 14:08:17 +0000 Subject: Add support for the Roda RK886EX a.k.a Rocky III+ ruggedised notebook http://www.roda-computer.com/en/products/notebooks/rocky-iii-rk886ex.html Signed-off-by: Stefan Reinauer Acked-by: Ronald G. Minnich Acked-by: Peter Stuge git-svn-id: svn://svn.coreboot.org/coreboot/trunk@5031 2b7e53f0-3cfb-0310-b3e9-8179ed1497e1 --- src/mainboard/roda/rk886ex/ec.c | 114 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 114 insertions(+) create mode 100644 src/mainboard/roda/rk886ex/ec.c (limited to 'src/mainboard/roda/rk886ex/ec.c') diff --git a/src/mainboard/roda/rk886ex/ec.c b/src/mainboard/roda/rk886ex/ec.c new file mode 100644 index 0000000000..5121ac2e08 --- /dev/null +++ b/src/mainboard/roda/rk886ex/ec.c @@ -0,0 +1,114 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2008-2009 coresystems GmbH + * + * 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; version 2 of + * the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, + * MA 02110-1301 USA + */ + +#include +#include +#include +#include "ec.h" + +int send_ec_command(u8 command) +{ + int timeout; + + timeout = 0x7ff; + while ((inb(EC_SC) & EC_IBF) && --timeout) { + udelay(10); + if ((timeout & 0xff) == 0) + printk_spew("."); + } + if (!timeout) { + printk_debug("Timeout while sending command 0x%02x to EC!\n", + command); + // return -1; + } + + outb(command, EC_SC); + return 0; +} + +int send_ec_data(u8 data) +{ + int timeout; + + timeout = 0x7ff; + while ((inb(EC_SC) & EC_IBF) && --timeout) { // wait for IBF = 0 + udelay(10); + if ((timeout & 0xff) == 0) + printk_spew("."); + } + if (!timeout) { + printk_debug("Timeout while sending data 0x%02x to EC!\n", + data); + // return -1; + } + + outb(data, EC_DATA); + + return 0; +} + +int send_ec_data_nowait(u8 data) +{ + outb(data, EC_DATA); + + return 0; +} + +u8 recv_ec_data(void) +{ + int timeout; + u8 data; + + timeout = 0x7fff; + while (--timeout) { // Wait for OBF = 1 + if (inb(EC_SC) & EC_OBF) { + break; + } + udelay(10); + if ((timeout & 0xff) == 0) + printk_spew("."); + } + if (!timeout) { + printk_debug("\nTimeout while receiving data from EC!\n"); + // return -1; + } + + data = inb(EC_DATA); + printk_debug("recv_ec_data: 0x%02x\n", data); + + return data; +} + +u8 ec_read(u8 addr) +{ + send_ec_command(0x80); + send_ec_data(addr); + + return recv_ec_data(); +} + +int ec_write(u8 addr, u8 data) +{ + send_ec_command(0x81); + send_ec_data(addr); + return send_ec_data(data); +} + -- cgit v1.2.3