drivers/gpu/drm/vc4/tests/vc4_mock.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <drm/drm_drv.h>
   4 #include <drm/drm_kunit_helpers.h>
   5
   6 #include <kunit/test.h>
   7
   8 #include "vc4_mock.h"
   9
  10 struct vc4_mock_output_desc {
  11         enum vc4_encoder_type   vc4_encoder_type;
  12         unsigned int            encoder_type;
  13         unsigned int            connector_type;
  14 };
  15
  16 #define VC4_MOCK_OUTPUT_DESC(_vc4_type, _etype, _ctype)                                 \
  17         {                                                                               \
  18                 .vc4_encoder_type = _vc4_type,                                          \
  19                 .encoder_type = _etype,                                                 \
  20                 .connector_type = _ctype,                                               \
  21         }
  22
  23 struct vc4_mock_pipe_desc {
  24         const struct vc4_crtc_data *data;
  25         const struct vc4_mock_output_desc *outputs;
  26         unsigned int noutputs;
  27 };
  28
  29 #define VC4_MOCK_CRTC_DESC(_data, ...)                                                  \
  30         {                                                                               \
  31                 .data = _data,                                                          \
  32                 .outputs = (struct vc4_mock_output_desc[]) { __VA_ARGS__ },             \
  33                 .noutputs = sizeof((struct vc4_mock_output_desc[]) { __VA_ARGS__ }) /   \
  34                              sizeof(struct vc4_mock_output_desc),                       \
  35         }
  36
  37 #define VC4_MOCK_PIXELVALVE_DESC(_data, ...)                                            \
  38         VC4_MOCK_CRTC_DESC(&(_data)->base, __VA_ARGS__)
  39
  40 struct vc4_mock_desc {
  41         const struct vc4_mock_pipe_desc *pipes;
  42         unsigned int npipes;
  43 };
  44
  45 #define VC4_MOCK_DESC(...)                                                              \
  46         {                                                                               \
  47                 .pipes = (struct vc4_mock_pipe_desc[]) { __VA_ARGS__ },                 \
  48                 .npipes = sizeof((struct vc4_mock_pipe_desc[]) { __VA_ARGS__ }) /       \
  49                              sizeof(struct vc4_mock_pipe_desc),                         \
  50         }
  51
  52 static const struct vc4_mock_desc vc4_mock =
  53         VC4_MOCK_DESC(
  54                 VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
  55                                    VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
  56                                                         DRM_MODE_ENCODER_VIRTUAL,
  57                                                         DRM_MODE_CONNECTOR_WRITEBACK)),
  58                 VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv0_data,
  59                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI0,
  60                                                               DRM_MODE_ENCODER_DSI,
  61                                                               DRM_MODE_CONNECTOR_DSI),
  62                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DPI,
  63                                                               DRM_MODE_ENCODER_DPI,
  64                                                               DRM_MODE_CONNECTOR_DPI)),
  65                 VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv1_data,
  66                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI1,
  67                                                               DRM_MODE_ENCODER_DSI,
  68                                                               DRM_MODE_CONNECTOR_DSI)),
  69                 VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv2_data,
  70                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI0,
  71                                                               DRM_MODE_ENCODER_TMDS,
  72                                                               DRM_MODE_CONNECTOR_HDMIA),
  73                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_VEC,
  74                                                               DRM_MODE_ENCODER_TVDAC,
  75                                                               DRM_MODE_CONNECTOR_Composite)),
  76 );
  77
  78 static const struct vc4_mock_desc vc5_mock =
  79         VC4_MOCK_DESC(
  80                 VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
  81                                    VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
  82                                                         DRM_MODE_ENCODER_VIRTUAL,
  83                                                         DRM_MODE_CONNECTOR_WRITEBACK)),
  84                 VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv0_data,
  85                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI0,
  86                                                               DRM_MODE_ENCODER_DSI,
  87                                                               DRM_MODE_CONNECTOR_DSI),
  88                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DPI,
  89                                                               DRM_MODE_ENCODER_DPI,
  90                                                               DRM_MODE_CONNECTOR_DPI)),
  91                 VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv1_data,
  92                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI1,
  93                                                               DRM_MODE_ENCODER_DSI,
  94                                                               DRM_MODE_CONNECTOR_DSI)),
  95                 VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv2_data,
  96                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI0,
  97                                                               DRM_MODE_ENCODER_TMDS,
  98                                                               DRM_MODE_CONNECTOR_HDMIA)),
  99                 VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv3_data,
 100                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_VEC,
 101                                                               DRM_MODE_ENCODER_TVDAC,
 102                                                               DRM_MODE_CONNECTOR_Composite)),
 103                 VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv4_data,
 104                                          VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI1,
 105                                                               DRM_MODE_ENCODER_TMDS,
 106                                                               DRM_MODE_CONNECTOR_HDMIA)),
 107 );
 108
 109 static int __build_one_pipe(struct kunit *test, struct drm_device *drm,
 110                             const struct vc4_mock_pipe_desc *pipe)
 111 {
 112         struct vc4_dummy_plane *dummy_plane;
 113         struct drm_plane *plane;
 114         struct vc4_dummy_crtc *dummy_crtc;
 115         struct drm_crtc *crtc;
 116         unsigned int i;
 117
 118         dummy_plane = vc4_dummy_plane(test, drm, DRM_PLANE_TYPE_PRIMARY);
 119         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_plane);
 120
 121         plane = &dummy_plane->plane.base;
 122         dummy_crtc = vc4_mock_pv(test, drm, plane, pipe->data);
 123         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_crtc);
 124
 125         crtc = &dummy_crtc->crtc.base;
 126         for (i = 0; i < pipe->noutputs; i++) {
 127                 const struct vc4_mock_output_desc *mock_output = &pipe->outputs[i];
 128                 struct vc4_dummy_output *dummy_output;
 129
 130                 dummy_output = vc4_dummy_output(test, drm, crtc,
 131                                                 mock_output->vc4_encoder_type,
 132                                                 mock_output->encoder_type,
 133                                                 mock_output->connector_type);
 134                 KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_output);
 135         }
 136
 137         return 0;
 138 }
 139
 140 static int __build_mock(struct kunit *test, struct drm_device *drm,
 141                         const struct vc4_mock_desc *mock)
 142 {
 143         unsigned int i;
 144
 145         for (i = 0; i < mock->npipes; i++) {
 146                 const struct vc4_mock_pipe_desc *pipe = &mock->pipes[i];
 147                 int ret;
 148
 149                 ret = __build_one_pipe(test, drm, pipe);
 150                 KUNIT_ASSERT_EQ(test, ret, 0);
 151         }
 152
 153         return 0;
 154 }
 155
 156 KUNIT_DEFINE_ACTION_WRAPPER(kunit_action_drm_dev_unregister,
 157                             drm_dev_unregister,
 158                             struct drm_device *);
 159
 160 static struct vc4_dev *__mock_device(struct kunit *test, bool is_vc5)
 161 {
 162         struct drm_device *drm;
 163         const struct drm_driver *drv = is_vc5 ? &vc5_drm_driver : &vc4_drm_driver;
 164         const struct vc4_mock_desc *desc = is_vc5 ? &vc5_mock : &vc4_mock;
 165         struct vc4_dev *vc4;
 166         struct device *dev;
 167         int ret;
 168
 169         dev = drm_kunit_helper_alloc_device(test);
 170         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
 171
 172         vc4 = drm_kunit_helper_alloc_drm_device_with_driver(test, dev,
 173                                                             struct vc4_dev, base,
 174                                                             drv);
 175         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
 176
 177         vc4->dev = dev;
 178         vc4->is_vc5 = is_vc5;
 179
 180         vc4->hvs = __vc4_hvs_alloc(vc4, NULL);
 181         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4->hvs);
 182
 183         drm = &vc4->base;
 184         ret = __build_mock(test, drm, desc);
 185         KUNIT_ASSERT_EQ(test, ret, 0);
 186
 187         ret = vc4_kms_load(drm);
 188         KUNIT_ASSERT_EQ(test, ret, 0);
 189
 190         ret = drm_dev_register(drm, 0);
 191         KUNIT_ASSERT_EQ(test, ret, 0);
 192
 193         ret = kunit_add_action_or_reset(test,
 194                                         kunit_action_drm_dev_unregister,
 195                                         drm);
 196         KUNIT_ASSERT_EQ(test, ret, 0);
 197
 198         return vc4;
 199 }
 200
 201 struct vc4_dev *vc4_mock_device(struct kunit *test)
 202 {
 203         return __mock_device(test, false);
 204 }
 205
 206 struct vc4_dev *vc5_mock_device(struct kunit *test)
 207 {
 208         return __mock_device(test, true);
 209 }