From 8d7115560d469f901d7d8ccb242d0b437e7394aa Mon Sep 17 00:00:00 2001 From: Stefan Reinauer Date: Fri, 30 Nov 2012 12:34:04 -0800 Subject: Rename devices -> device to match src/include/device Change-Id: I5d0e5b4361c34881a3b81347aac48738cb5b9af0 Signed-off-by: Stefan Reinauer Reviewed-on: http://review.coreboot.org/1960 Tested-by: build bot (Jenkins) Reviewed-by: David Hendricks --- src/device/smbus_ops.c | 137 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 137 insertions(+) create mode 100644 src/device/smbus_ops.c (limited to 'src/device/smbus_ops.c') diff --git a/src/device/smbus_ops.c b/src/device/smbus_ops.c new file mode 100644 index 0000000000..75ca42b0c9 --- /dev/null +++ b/src/device/smbus_ops.c @@ -0,0 +1,137 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2004 Tyan + * (Written by Yinghai Lu for Tyan) + * Copyright (C) 2004 Li-Ta Lo + * + * 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 +#include + +struct bus *get_pbus_smbus(device_t dev) +{ + struct bus *pbus = dev->bus; + + while (pbus && pbus->dev && !ops_smbus_bus(pbus)) + pbus = pbus->dev->bus; + + if (!pbus || !pbus->dev || !pbus->dev->ops + || !pbus->dev->ops->ops_smbus_bus) { + printk(BIOS_ALERT, "%s Cannot find SMBus bus operations", + dev_path(dev)); + die(""); + } + + return pbus; +} + +/* + * Multi-level I2C MUX? May need to find the first I2C device and then set link + * down to current dev. + * + * 1 store get_pbus_smbus list link + * 2 reverse the link and call set link. + * + * @param dev TODO. + */ +int smbus_set_link(device_t dev) +{ + struct bus *pbus_a[4]; // 4 level mux only. Enough? + struct bus *pbus = dev->bus; + int pbus_num = 0; + int i; + + while (pbus && pbus->dev && (pbus->dev->path.type == DEVICE_PATH_I2C)) { + pbus_a[pbus_num++] = pbus; + pbus = pbus->dev->bus; + } + + // printk(BIOS_INFO, "smbus_set_link: "); + for (i = pbus_num - 1; i >= 0; i--) { + // printk(BIOS_INFO, " %s[%d] -> ", dev_path(pbus_a[i]->dev), + // pbus_a[i]->link); + if (ops_smbus_bus(get_pbus_smbus(pbus_a[i]->dev))) { + if (pbus_a[i]->dev->ops + && pbus_a[i]->dev->ops->set_link) + pbus_a[i]->dev->ops->set_link(pbus_a[i]->dev, + pbus_a[i]->link_num); + } + } + // printk(BIOS_INFO, " %s\n", dev_path(dev)); + + return pbus_num; +} + +int smbus_quick_read(device_t dev) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->quick_read(dev); +} + +int smbus_quick_write(device_t dev) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->quick_write(dev); +} + +int smbus_recv_byte(device_t dev) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->recv_byte(dev); +} + +int smbus_send_byte(device_t dev, u8 byte) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->send_byte(dev, byte); +} + +int smbus_read_byte(device_t dev, u8 addr) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->read_byte(dev, addr); +} + +int smbus_write_byte(device_t dev, u8 addr, u8 val) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->write_byte(dev, addr, val); +} + +int smbus_read_word(device_t dev, u8 addr) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->read_word(dev, addr); +} + +int smbus_write_word(device_t dev, u8 addr, u16 val) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->write_word(dev, addr, val); +} + +int smbus_process_call(device_t dev, u8 cmd, u16 data) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->process_call(dev, cmd, data); +} + +int smbus_block_read(device_t dev, u8 cmd, u8 bytes, u8 *buffer) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->block_read(dev, cmd, + bytes, buffer); +} + +int smbus_block_write(device_t dev, u8 cmd, u8 bytes, const u8 *buffer) +{ + return ops_smbus_bus(get_pbus_smbus(dev))->block_write(dev, cmd, + bytes, buffer); +} -- cgit v1.2.3