From abb0b01e7a22c4a1f3fdd2301fae7276e857b04b Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Sun, 17 Jan 2016 16:11:44 -0700 Subject: x86: i2c: Add a stub driver for Intel I2C/SMbus 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 Reviewed-by: Heiko Schocher Reviewed-by: Bin Meng --- drivers/i2c/intel_i2c.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 drivers/i2c/intel_i2c.c (limited to 'drivers/i2c/intel_i2c.c') diff --git a/drivers/i2c/intel_i2c.c b/drivers/i2c/intel_i2c.c new file mode 100644 index 00000000000..1082d1a3ed6 --- /dev/null +++ b/drivers/i2c/intel_i2c.c @@ -0,0 +1,51 @@ +/* + * Copyright (c) 2015 Google, Inc + * Written by Simon Glass + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include + +int intel_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, int nmsgs) +{ + return -ENOSYS; +} + +int intel_i2c_probe_chip(struct udevice *bus, uint chip_addr, uint chip_flags) +{ + return -ENOSYS; +} + +int intel_i2c_set_bus_speed(struct udevice *bus, unsigned int speed) +{ + return 0; +} + +static int intel_i2c_probe(struct udevice *dev) +{ + return 0; +} + +static const struct dm_i2c_ops intel_i2c_ops = { + .xfer = intel_i2c_xfer, + .probe_chip = intel_i2c_probe_chip, + .set_bus_speed = intel_i2c_set_bus_speed, +}; + +static const struct udevice_id intel_i2c_ids[] = { + { .compatible = "intel,ich-i2c" }, + { } +}; + +U_BOOT_DRIVER(intel_i2c) = { + .name = "i2c_intel", + .id = UCLASS_I2C, + .of_match = intel_i2c_ids, + .per_child_auto_alloc_size = sizeof(struct dm_i2c_chip), + .ops = &intel_i2c_ops, + .probe = intel_i2c_probe, +}; -- cgit v1.2.3