drivers/gpu/drm/vc4/tests/vc4_mock_output.c

   1 // SPDX-License-Identifier: GPL-2.0
   2
   3 #include <drm/drm_atomic_state_helper.h>
   4 #include <drm/drm_atomic_uapi.h>
   5 #include <drm/drm_connector.h>
   6 #include <drm/drm_crtc.h>
   7 #include <drm/drm_encoder.h>
   8 #include <drm/drm_modeset_helper_vtables.h>
   9
  10 #include <kunit/test.h>
  11
  12 #include "vc4_mock.h"
  13
  14 static const struct drm_connector_helper_funcs vc4_dummy_connector_helper_funcs = {
  15 };
  16
  17 static const struct drm_connector_funcs vc4_dummy_connector_funcs = {
  18         .atomic_destroy_state   = drm_atomic_helper_connector_destroy_state,
  19         .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
  20         .reset                  = drm_atomic_helper_connector_reset,
  21 };
  22
  23 struct vc4_dummy_output *vc4_dummy_output(struct kunit *test,
  24                                           struct drm_device *drm,
  25                                           struct drm_crtc *crtc,
  26                                           enum vc4_encoder_type vc4_encoder_type,
  27                                           unsigned int kms_encoder_type,
  28                                           unsigned int connector_type)
  29 {
  30         struct vc4_dummy_output *dummy_output;
  31         struct drm_connector *conn;
  32         struct drm_encoder *enc;
  33         int ret;
  34
  35         dummy_output = drmm_kzalloc(drm, sizeof(*dummy_output), GFP_KERNEL);
  36         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_output);
  37         dummy_output->encoder.type = vc4_encoder_type;
  38
  39         enc = &dummy_output->encoder.base;
  40         ret = drmm_encoder_init(drm, enc,
  41                                 NULL,
  42                                 kms_encoder_type,
  43                                 NULL);
  44         KUNIT_ASSERT_EQ(test, ret, 0);
  45         enc->possible_crtcs = drm_crtc_mask(crtc);
  46
  47         conn = &dummy_output->connector;
  48         ret = drmm_connector_init(drm, conn,
  49                                   &vc4_dummy_connector_funcs,
  50                                   connector_type,
  51                                   NULL);
  52         KUNIT_ASSERT_EQ(test, ret, 0);
  53
  54         drm_connector_helper_add(conn, &vc4_dummy_connector_helper_funcs);
  55         drm_connector_attach_encoder(conn, enc);
  56
  57         return dummy_output;
  58 }
  59
  60 static const struct drm_display_mode default_mode = {
  61         DRM_SIMPLE_MODE(640, 480, 64, 48)
  62 };
  63
  64 int vc4_mock_atomic_add_output(struct kunit *test,
  65                                struct drm_atomic_state *state,
  66                                enum vc4_encoder_type type)
  67 {
  68         struct drm_device *drm = state->dev;
  69         struct drm_connector_state *conn_state;
  70         struct drm_crtc_state *crtc_state;
  71         struct vc4_dummy_output *output;
  72         struct drm_connector *conn;
  73         struct drm_encoder *encoder;
  74         struct drm_crtc *crtc;
  75         int ret;
  76
  77         encoder = vc4_find_encoder_by_type(drm, type);
  78         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder);
  79
  80         crtc = vc4_find_crtc_for_encoder(test, encoder);
  81         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc);
  82
  83         output = encoder_to_vc4_dummy_output(encoder);
  84         conn = &output->connector;
  85         conn_state = drm_atomic_get_connector_state(state, conn);
  86         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
  87
  88         ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
  89         KUNIT_EXPECT_EQ(test, ret, 0);
  90
  91         crtc_state = drm_atomic_get_crtc_state(state, crtc);
  92         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
  93
  94         ret = drm_atomic_set_mode_for_crtc(crtc_state, &default_mode);
  95         KUNIT_EXPECT_EQ(test, ret, 0);
  96
  97         crtc_state->active = true;
  98
  99         return 0;
 100 }
 101
 102 int vc4_mock_atomic_del_output(struct kunit *test,
 103                                struct drm_atomic_state *state,
 104                                enum vc4_encoder_type type)
 105 {
 106         struct drm_device *drm = state->dev;
 107         struct drm_connector_state *conn_state;
 108         struct drm_crtc_state *crtc_state;
 109         struct vc4_dummy_output *output;
 110         struct drm_connector *conn;
 111         struct drm_encoder *encoder;
 112         struct drm_crtc *crtc;
 113         int ret;
 114
 115         encoder = vc4_find_encoder_by_type(drm, type);
 116         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder);
 117
 118         crtc = vc4_find_crtc_for_encoder(test, encoder);
 119         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc);
 120
 121         crtc_state = drm_atomic_get_crtc_state(state, crtc);
 122         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
 123
 124         crtc_state->active = false;
 125
 126         ret = drm_atomic_set_mode_for_crtc(crtc_state, NULL);
 127         KUNIT_ASSERT_EQ(test, ret, 0);
 128
 129         output = encoder_to_vc4_dummy_output(encoder);
 130         conn = &output->connector;
 131         conn_state = drm_atomic_get_connector_state(state, conn);
 132         KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
 133
 134         ret = drm_atomic_set_crtc_for_connector(conn_state, NULL);
 135         KUNIT_ASSERT_EQ(test, ret, 0);
 136
 137         return 0;
 138 }