mirror of
https://github.com/u-boot/u-boot.git
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2e7d35d2a6
Add some tests of driver model functionality. Coverage includes: - basic init - binding of drivers to devices using platform_data - automatic probing of devices when referenced - availability of platform data to devices - lifecycle from bind to probe to remove to unbind - renumbering within a uclass when devices are probed/removed - calling driver-defined operations - deactivation of drivers when removed - memory leak across creation and destruction of drivers/uclasses - uclass init/destroy methods - automatic probe/remove of children/parents when needed This function is enabled for sandbox, using CONFIG_DM_TEST. Signed-off-by: Simon Glass <sjg@chromium.org>
145 lines
3.3 KiB
C
145 lines
3.3 KiB
C
/*
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* Copyright (c) 2013 Google, Inc
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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 <errno.h>
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#include <fdtdec.h>
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#include <malloc.h>
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#include <asm/io.h>
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#include <dm/test.h>
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#include <dm/root.h>
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#include <dm/ut.h>
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#include <dm/uclass-internal.h>
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#include <dm/util.h>
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DECLARE_GLOBAL_DATA_PTR;
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static int testfdt_drv_ping(struct device *dev, int pingval, int *pingret)
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{
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const struct dm_test_pdata *pdata = dev->platdata;
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struct dm_test_priv *priv = dev_get_priv(dev);
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*pingret = pingval + pdata->ping_add;
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priv->ping_total += *pingret;
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return 0;
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}
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static const struct test_ops test_ops = {
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.ping = testfdt_drv_ping,
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};
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static int testfdt_ofdata_to_platdata(struct device *dev)
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{
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struct dm_test_pdata *pdata = dev_get_platdata(dev);
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pdata->ping_add = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
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"ping-add", -1);
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pdata->base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
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return 0;
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}
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static int testfdt_drv_probe(struct device *dev)
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{
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struct dm_test_priv *priv = dev_get_priv(dev);
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priv->ping_total += DM_TEST_START_TOTAL;
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return 0;
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}
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static const struct device_id testfdt_ids[] = {
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{
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.compatible = "denx,u-boot-fdt-test",
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.data = DM_TEST_TYPE_FIRST },
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{
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.compatible = "google,another-fdt-test",
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.data = DM_TEST_TYPE_SECOND },
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{ }
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};
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U_BOOT_DRIVER(testfdt_drv) = {
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.name = "testfdt_drv",
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.of_match = testfdt_ids,
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.id = UCLASS_TEST_FDT,
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.ofdata_to_platdata = testfdt_ofdata_to_platdata,
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.probe = testfdt_drv_probe,
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.ops = &test_ops,
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.priv_auto_alloc_size = sizeof(struct dm_test_priv),
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.platdata_auto_alloc_size = sizeof(struct dm_test_pdata),
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};
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/* From here is the testfdt uclass code */
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int testfdt_ping(struct device *dev, int pingval, int *pingret)
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{
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const struct test_ops *ops = device_get_ops(dev);
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if (!ops->ping)
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return -ENOSYS;
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return ops->ping(dev, pingval, pingret);
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}
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UCLASS_DRIVER(testfdt) = {
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.name = "testfdt",
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.id = UCLASS_TEST_FDT,
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};
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/* Test that FDT-based binding works correctly */
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static int dm_test_fdt(struct dm_test_state *dms)
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{
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const int num_drivers = 3;
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struct device *dev;
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struct uclass *uc;
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int ret;
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int i;
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ret = dm_scan_fdt(gd->fdt_blob);
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ut_assert(!ret);
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ret = uclass_get(UCLASS_TEST_FDT, &uc);
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ut_assert(!ret);
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/* These are num_drivers compatible root-level device tree nodes */
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ut_asserteq(num_drivers, list_count_items(&uc->dev_head));
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/* Each should have no platdata / priv */
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for (i = 0; i < num_drivers; i++) {
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ret = uclass_find_device(UCLASS_TEST_FDT, i, &dev);
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ut_assert(!ret);
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ut_assert(!dev_get_priv(dev));
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ut_assert(!dev->platdata);
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}
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/*
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* Now check that the ping adds are what we expect. This is using the
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* ping-add property in each node.
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*/
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for (i = 0; i < num_drivers; i++) {
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uint32_t base;
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ret = uclass_get_device(UCLASS_TEST_FDT, i, &dev);
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ut_assert(!ret);
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/*
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* Get the 'reg' property, which tells us what the ping add
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* should be. We don't use the platdata because we want
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* to test the code that sets that up (testfdt_drv_probe()).
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*/
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base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
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debug("dev=%d, base=%d: %s\n", i, base,
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fdt_get_name(gd->fdt_blob, dev->of_offset, NULL));
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ut_assert(!dm_check_operations(dms, dev, base,
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dev_get_priv(dev)));
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}
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return 0;
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}
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DM_TEST(dm_test_fdt, 0);
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