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drm/vc4: tests: Introduce a mocking infrastructure

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In order to test the current atomic_check hooks we need to have a DRM
device that has roughly the same capabilities and layout that the actual
hardware. We'll also need a bunch of functions to create arbitrary
atomic states.

Let's create some helpers to create a device that behaves like the real
one, and some helpers to maintain the atomic state we want to check.

Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Maíra Canal <mcanal@igalia.com>
Link: https://lore.kernel.org/r/20221123-rpi-kunit-tests-v3-17-4615a663a84a@cerno.tech
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
This commit is contained in:
Maxime Ripard
2022-12-01 16:11:48 +01:00
parent 640dbcc91d
commit f759f5b53f
12 changed files with 511 additions and 13 deletions
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20
drivers/gpu/drm/vc4/vc4_crtc.c
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@@ -675,8 +675,8 @@ void vc4_crtc_get_margins(struct drm_crtc_state *state,
}
}
static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
int vc4_crtc_atomic_check(struct drm_crtc *crtc,
struct drm_atomic_state *state)
{
struct drm_crtc_state *crtc_state = drm_atomic_get_new_crtc_state(state,
crtc);
@@ -1116,7 +1116,7 @@ static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
.get_scanout_position = vc4_crtc_get_scanout_position,
};
static const struct vc4_pv_data bcm2835_pv0_data = {
const struct vc4_pv_data bcm2835_pv0_data = {
.base = {
.name = "pixelvalve-0",
.debugfs_name = "crtc0_regs",
@@ -1131,7 +1131,7 @@ static const struct vc4_pv_data bcm2835_pv0_data = {
},
};
static const struct vc4_pv_data bcm2835_pv1_data = {
const struct vc4_pv_data bcm2835_pv1_data = {
.base = {
.name = "pixelvalve-1",
.debugfs_name = "crtc1_regs",
@@ -1146,7 +1146,7 @@ static const struct vc4_pv_data bcm2835_pv1_data = {
},
};
static const struct vc4_pv_data bcm2835_pv2_data = {
const struct vc4_pv_data bcm2835_pv2_data = {
.base = {
.name = "pixelvalve-2",
.debugfs_name = "crtc2_regs",
@@ -1161,7 +1161,7 @@ static const struct vc4_pv_data bcm2835_pv2_data = {
},
};
static const struct vc4_pv_data bcm2711_pv0_data = {
const struct vc4_pv_data bcm2711_pv0_data = {
.base = {
.name = "pixelvalve-0",
.debugfs_name = "crtc0_regs",
@@ -1176,7 +1176,7 @@ static const struct vc4_pv_data bcm2711_pv0_data = {
},
};
static const struct vc4_pv_data bcm2711_pv1_data = {
const struct vc4_pv_data bcm2711_pv1_data = {
.base = {
.name = "pixelvalve-1",
.debugfs_name = "crtc1_regs",
@@ -1191,7 +1191,7 @@ static const struct vc4_pv_data bcm2711_pv1_data = {
},
};
static const struct vc4_pv_data bcm2711_pv2_data = {
const struct vc4_pv_data bcm2711_pv2_data = {
.base = {
.name = "pixelvalve-2",
.debugfs_name = "crtc2_regs",
@@ -1205,7 +1205,7 @@ static const struct vc4_pv_data bcm2711_pv2_data = {
},
};
static const struct vc4_pv_data bcm2711_pv3_data = {
const struct vc4_pv_data bcm2711_pv3_data = {
.base = {
.name = "pixelvalve-3",
.debugfs_name = "crtc3_regs",
@@ -1219,7 +1219,7 @@ static const struct vc4_pv_data bcm2711_pv3_data = {
},
};
static const struct vc4_pv_data bcm2711_pv4_data = {
const struct vc4_pv_data bcm2711_pv4_data = {
.base = {
.name = "pixelvalve-4",
.debugfs_name = "crtc4_regs",