test/dm/test-fdt.c

   1 /*
   2  * Copyright (c) 2013 Google, Inc
   3  *
   4  * SPDX-License-Identifier:     GPL-2.0+
   5  */
   6
   7 #include <common.h>
   8 #include <dm.h>
   9 #include <errno.h>
  10 #include <fdtdec.h>
  11 #include <malloc.h>
  12 #include <asm/io.h>
  13 #include <dm/test.h>
  14 #include <dm/root.h>
  15 #include <dm/ut.h>
  16 #include <dm/uclass-internal.h>
  17 #include <dm/util.h>
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 static int testfdt_drv_ping(struct udevice *dev, int pingval, int *pingret)
  22 {
  23         const struct dm_test_pdata *pdata = dev->platdata;
  24         struct dm_test_priv *priv = dev_get_priv(dev);
  25
  26         *pingret = pingval + pdata->ping_add;
  27         priv->ping_total += *pingret;
  28
  29         return 0;
  30 }
  31
  32 static const struct test_ops test_ops = {
  33         .ping = testfdt_drv_ping,
  34 };
  35
  36 static int testfdt_ofdata_to_platdata(struct udevice *dev)
  37 {
  38         struct dm_test_pdata *pdata = dev_get_platdata(dev);
  39
  40         pdata->ping_add = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
  41                                         "ping-add", -1);
  42         pdata->base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
  43
  44         return 0;
  45 }
  46
  47 static int testfdt_drv_probe(struct udevice *dev)
  48 {
  49         struct dm_test_priv *priv = dev_get_priv(dev);
  50
  51         priv->ping_total += DM_TEST_START_TOTAL;
  52
  53         return 0;
  54 }
  55
  56 static const struct udevice_id testfdt_ids[] = {
  57         {
  58                 .compatible = "denx,u-boot-fdt-test",
  59                 .data = DM_TEST_TYPE_FIRST },
  60         {
  61                 .compatible = "google,another-fdt-test",
  62                 .data = DM_TEST_TYPE_SECOND },
  63         { }
  64 };
  65
  66 U_BOOT_DRIVER(testfdt_drv) = {
  67         .name   = "testfdt_drv",
  68         .of_match       = testfdt_ids,
  69         .id     = UCLASS_TEST_FDT,
  70         .ofdata_to_platdata = testfdt_ofdata_to_platdata,
  71         .probe  = testfdt_drv_probe,
  72         .ops    = &test_ops,
  73         .priv_auto_alloc_size = sizeof(struct dm_test_priv),
  74         .platdata_auto_alloc_size = sizeof(struct dm_test_pdata),
  75 };
  76
  77 /* From here is the testfdt uclass code */
  78 int testfdt_ping(struct udevice *dev, int pingval, int *pingret)
  79 {
  80         const struct test_ops *ops = device_get_ops(dev);
  81
  82         if (!ops->ping)
  83                 return -ENOSYS;
  84
  85         return ops->ping(dev, pingval, pingret);
  86 }
  87
  88 UCLASS_DRIVER(testfdt) = {
  89         .name           = "testfdt",
  90         .id             = UCLASS_TEST_FDT,
  91 };
  92
  93 /* Test that FDT-based binding works correctly */
  94 static int dm_test_fdt(struct dm_test_state *dms)
  95 {
  96         const int num_drivers = 3;
  97         struct udevice *dev;
  98         struct uclass *uc;
  99         int ret;
 100         int i;
 101
 102         ret = dm_scan_fdt(gd->fdt_blob);
 103         ut_assert(!ret);
 104
 105         ret = uclass_get(UCLASS_TEST_FDT, &uc);
 106         ut_assert(!ret);
 107
 108         /* These are num_drivers compatible root-level device tree nodes */
 109         ut_asserteq(num_drivers, list_count_items(&uc->dev_head));
 110
 111         /* Each should have no platdata / priv */
 112         for (i = 0; i < num_drivers; i++) {
 113                 ret = uclass_find_device(UCLASS_TEST_FDT, i, &dev);
 114                 ut_assert(!ret);
 115                 ut_assert(!dev_get_priv(dev));
 116                 ut_assert(!dev->platdata);
 117         }
 118
 119         /*
 120          * Now check that the ping adds are what we expect. This is using the
 121          * ping-add property in each node.
 122          */
 123         for (i = 0; i < num_drivers; i++) {
 124                 uint32_t base;
 125
 126                 ret = uclass_get_device(UCLASS_TEST_FDT, i, &dev);
 127                 ut_assert(!ret);
 128
 129                 /*
 130                  * Get the 'reg' property, which tells us what the ping add
 131                  * should be. We don't use the platdata because we want
 132                  * to test the code that sets that up (testfdt_drv_probe()).
 133                  */
 134                 base = fdtdec_get_addr(gd->fdt_blob, dev->of_offset, "reg");
 135                 debug("dev=%d, base=%d: %s\n", i, base,
 136                       fdt_get_name(gd->fdt_blob, dev->of_offset, NULL));
 137
 138                 ut_assert(!dm_check_operations(dms, dev, base,
 139                                                dev_get_priv(dev)));
 140         }
 141
 142         return 0;
 143 }
 144 DM_TEST(dm_test_fdt, 0);