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c2c02249a0
Instead of mocking i2c_read8/16/32, mock i2c_xfer. We can now test code that call i2c_xfer directly and test common/i2c.c BRANCH=samus, ryu BUG=chrome-os-partner:45223 TEST=Unit tests pass. Change-Id: Iaa772515c40cf55d2050d0019e2062d63278adc0 Signed-off-by: Gwendal Grignou <gwendal@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/299768 Reviewed-by: Alec Berg <alecaberg@chromium.org>
109 lines
2.1 KiB
C
109 lines
2.1 KiB
C
/* Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*
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* Dummy I2C driver for unit test.
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*/
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#include "hooks.h"
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#include "i2c.h"
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#include "link_defs.h"
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#include "test_util.h"
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#define MAX_DETACHED_DEV_COUNT 3
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struct i2c_dev {
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int port;
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int slave_addr;
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int valid;
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};
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static struct i2c_dev detached_devs[MAX_DETACHED_DEV_COUNT];
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static void detach_init(void)
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{
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int i;
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for (i = 0; i < MAX_DETACHED_DEV_COUNT; ++i)
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detached_devs[i].valid = 0;
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}
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DECLARE_HOOK(HOOK_INIT, detach_init, HOOK_PRIO_FIRST);
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int test_detach_i2c(int port, int slave_addr)
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{
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int i;
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for (i = 0; i < MAX_DETACHED_DEV_COUNT; ++i)
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if (detached_devs[i].valid == 0)
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break;
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if (i == MAX_DETACHED_DEV_COUNT)
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return EC_ERROR_OVERFLOW;
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detached_devs[i].port = port;
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detached_devs[i].slave_addr = slave_addr;
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detached_devs[i].valid = 1;
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return EC_SUCCESS;
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}
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int test_attach_i2c(int port, int slave_addr)
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{
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int i;
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for (i = 0; i < MAX_DETACHED_DEV_COUNT; ++i)
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if (detached_devs[i].valid &&
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detached_devs[i].port == port &&
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detached_devs[i].slave_addr == slave_addr)
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break;
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if (i == MAX_DETACHED_DEV_COUNT)
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return EC_ERROR_INVAL;
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detached_devs[i].valid = 0;
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return EC_SUCCESS;
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}
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static int test_check_detached(int port, int slave_addr)
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{
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int i;
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for (i = 0; i < MAX_DETACHED_DEV_COUNT; ++i)
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if (detached_devs[i].valid &&
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detached_devs[i].port == port &&
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detached_devs[i].slave_addr == slave_addr)
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return 1;
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return 0;
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}
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int chip_i2c_xfer(int port, int slave_addr, const uint8_t *out, int out_size,
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uint8_t *in, int in_size, int flags)
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{
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const struct test_i2c_xfer *p;
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int rv;
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if (test_check_detached(port, slave_addr))
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return EC_ERROR_UNKNOWN;
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for (p = __test_i2c_xfer; p < __test_i2c_xfer_end; ++p) {
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rv = p->routine(port, slave_addr, out, out_size,
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in, in_size, flags);
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if (rv != EC_ERROR_INVAL)
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return rv;
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}
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return EC_ERROR_UNKNOWN;
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}
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int i2c_raw_get_scl(int port)
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{
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return 1;
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}
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int i2c_raw_get_sda(int port)
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{
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return 1;
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}
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int i2c_get_line_levels(int port)
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{
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return 0;
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}
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