This is used on most Intel platforms. We don't have a driver for it yet, but add a stub to handle the init. For now this targets ivybridge so we may want to add a device tree binding and generalise it when other platforms are supported. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Heiko Schocher <hs@denx.de> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>master
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/*
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* Copyright (c) 2015 Google, Inc |
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* Written by Simon Glass <sjg@chromium.org> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#include <common.h> |
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#include <dm.h> |
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#include <i2c.h> |
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#include <asm/io.h> |
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int intel_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs) |
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{ |
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return -ENOSYS; |
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} |
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int intel_i2c_probe_chip(struct udevice *bus, uint chip_addr, uint chip_flags) |
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{ |
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return -ENOSYS; |
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} |
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int intel_i2c_set_bus_speed(struct udevice *bus, unsigned int speed) |
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{ |
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return 0; |
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} |
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static int intel_i2c_probe(struct udevice *dev) |
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{ |
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return 0; |
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} |
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static const struct dm_i2c_ops intel_i2c_ops = { |
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.xfer = intel_i2c_xfer, |
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.probe_chip = intel_i2c_probe_chip, |
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.set_bus_speed = intel_i2c_set_bus_speed, |
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}; |
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static const struct udevice_id intel_i2c_ids[] = { |
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{ .compatible = "intel,ich-i2c" }, |
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{ } |
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}; |
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U_BOOT_DRIVER(intel_i2c) = { |
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.name = "i2c_intel", |
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.id = UCLASS_I2C, |
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.of_match = intel_i2c_ids, |
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.per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), |
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.ops = &intel_i2c_ops, |
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.probe = intel_i2c_probe, |
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}; |
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