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			Diff
		
	
	
	
	
	
			
		
		
	
	
			771 lines
		
	
	
	
		
			24 KiB
		
	
	
	
		
			Diff
		
	
	
	
	
	
From f11a7a0416c2edf8b4fbe9f106476e09bdd94c96 Mon Sep 17 00:00:00 2001
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From: Maxime Ripard <maxime@cerno.tech>
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Date: Mon, 21 Nov 2022 18:18:40 +0100
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Subject: [PATCH 518/726] 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
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device that has roughly the same capabilities and layout that the actual
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hardware. We'll also need a bunch of functions to create arbitrary
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atomic states.
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Let's create some helpers to create a device that behaves like the real
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one, and some helpers to maintain the atomic state we want to check.
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Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
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Signed-off-by: Maxime Ripard <maxime@cerno.tech>
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---
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 drivers/gpu/drm/vc4/Kconfig                 |  16 ++
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 drivers/gpu/drm/vc4/Makefile                |   6 +
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 drivers/gpu/drm/vc4/tests/.kunitconfig      |  13 ++
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 drivers/gpu/drm/vc4/tests/vc4_mock.c        | 200 ++++++++++++++++++++
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 drivers/gpu/drm/vc4/tests/vc4_mock.h        |  60 ++++++
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 drivers/gpu/drm/vc4/tests/vc4_mock_crtc.c   |  41 ++++
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 drivers/gpu/drm/vc4/tests/vc4_mock_output.c |  99 ++++++++++
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 drivers/gpu/drm/vc4/tests/vc4_mock_plane.c  |  47 +++++
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 drivers/gpu/drm/vc4/vc4_crtc.c              |  20 +-
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 drivers/gpu/drm/vc4/vc4_drv.c               |   4 +-
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 drivers/gpu/drm/vc4/vc4_drv.h               |  16 ++
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 drivers/gpu/drm/vc4/vc4_firmware_kms.c      |   6 +-
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 drivers/gpu/drm/vc4/vc4_txp.c               |   2 +-
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 13 files changed, 514 insertions(+), 16 deletions(-)
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 create mode 100644 drivers/gpu/drm/vc4/tests/.kunitconfig
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 create mode 100644 drivers/gpu/drm/vc4/tests/vc4_mock.c
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 create mode 100644 drivers/gpu/drm/vc4/tests/vc4_mock.h
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 create mode 100644 drivers/gpu/drm/vc4/tests/vc4_mock_crtc.c
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 create mode 100644 drivers/gpu/drm/vc4/tests/vc4_mock_output.c
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 create mode 100644 drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
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diff --git a/drivers/gpu/drm/vc4/Kconfig b/drivers/gpu/drm/vc4/Kconfig
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index 246305d17a52..f423941c028d 100644
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--- a/drivers/gpu/drm/vc4/Kconfig
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+++ b/drivers/gpu/drm/vc4/Kconfig
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@@ -34,3 +34,19 @@ config DRM_VC4_HDMI_CEC
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 	help
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 	  Choose this option if you have a Broadcom VC4 GPU
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 	  and want to use CEC.
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+
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+config DRM_VC4_KUNIT_TEST
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+	bool "KUnit tests for VC4" if !KUNIT_ALL_TESTS
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+	depends on DRM_VC4 && KUNIT
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+	select DRM_KUNIT_TEST_HELPERS
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+	default KUNIT_ALL_TESTS
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+	help
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+	  This builds unit tests for the VC4 DRM/KMS driver. This option is
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+	  not useful for distributions or general kernels, but only for kernel
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+	  developers working on the VC4 driver.
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+
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+	  For more information on KUnit and unit tests in general,
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+	  please refer to the KUnit documentation in
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+	  Documentation/dev-tools/kunit/.
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+
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+	  If in doubt, say "N".
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diff --git a/drivers/gpu/drm/vc4/Makefile b/drivers/gpu/drm/vc4/Makefile
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index 8281a044834f..381d345468ec 100644
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--- a/drivers/gpu/drm/vc4/Makefile
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+++ b/drivers/gpu/drm/vc4/Makefile
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@@ -26,6 +26,12 @@ vc4-y := \
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 	vc4_validate.o \
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 	vc4_validate_shaders.o
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+vc4-$(CONFIG_DRM_VC4_KUNIT_TEST) += \
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+	tests/vc4_mock.o \
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+	tests/vc4_mock_crtc.o \
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+	tests/vc4_mock_output.o \
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+	tests/vc4_mock_plane.o
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+
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 vc4-$(CONFIG_DEBUG_FS) += vc4_debugfs.o
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 obj-$(CONFIG_DRM_VC4)  += vc4.o
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diff --git a/drivers/gpu/drm/vc4/tests/.kunitconfig b/drivers/gpu/drm/vc4/tests/.kunitconfig
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new file mode 100644
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index 000000000000..b503e9036c7f
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--- /dev/null
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+++ b/drivers/gpu/drm/vc4/tests/.kunitconfig
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@@ -0,0 +1,13 @@
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+CONFIG_ARCH_BCM=y
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+CONFIG_ARCH_BCM2835=y
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+CONFIG_BCM2835_MBOX=y
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+CONFIG_KUNIT=y
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+CONFIG_DRM=y
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+CONFIG_DRM_VC4=y
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+CONFIG_DRM_VC4_KUNIT_TEST=y
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+CONFIG_MAILBOX=y
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+CONFIG_RASPBERRYPI_FIRMWARE=y
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+CONFIG_SND=y
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+CONFIG_SND_SOC=y
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+CONFIG_SOUND=y
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+CONFIG_COMMON_CLK=y
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diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock.c b/drivers/gpu/drm/vc4/tests/vc4_mock.c
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new file mode 100644
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index 000000000000..a4bed26af32f
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--- /dev/null
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+++ b/drivers/gpu/drm/vc4/tests/vc4_mock.c
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@@ -0,0 +1,200 @@
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+// SPDX-License-Identifier: GPL-2.0
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+
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+#include <drm/drm_drv.h>
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+#include <drm/drm_kunit_helpers.h>
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+
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+#include <kunit/test.h>
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+
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+#include "vc4_mock.h"
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+
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+struct vc4_mock_output_desc {
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+	enum vc4_encoder_type	vc4_encoder_type;
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+	unsigned int		encoder_type;
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+	unsigned int		connector_type;
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+};
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+
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+#define VC4_MOCK_OUTPUT_DESC(_vc4_type, _etype, _ctype)					\
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+	{										\
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+		.vc4_encoder_type = _vc4_type,						\
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+		.encoder_type = _etype,							\
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+		.connector_type = _ctype,						\
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+	}
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+
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+struct vc4_mock_pipe_desc {
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+	const struct vc4_crtc_data *data;
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+	const struct vc4_mock_output_desc *outputs;
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+	unsigned int noutputs;
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+};
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+
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+#define VC4_MOCK_CRTC_DESC(_data, ...)							\
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+	{										\
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+		.data = _data,								\
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+		.outputs = (struct vc4_mock_output_desc[]) { __VA_ARGS__ },		\
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+		.noutputs = sizeof((struct vc4_mock_output_desc[]) { __VA_ARGS__ }) /	\
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+			     sizeof(struct vc4_mock_output_desc),			\
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+	}
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+
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+#define VC4_MOCK_PIXELVALVE_DESC(_data, ...)						\
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+	VC4_MOCK_CRTC_DESC(&(_data)->base, __VA_ARGS__)
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+
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+struct vc4_mock_desc {
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+	const struct vc4_mock_pipe_desc *pipes;
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+	unsigned int npipes;
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+};
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+
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+#define VC4_MOCK_DESC(...)								\
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+	{										\
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+		.pipes = (struct vc4_mock_pipe_desc[]) { __VA_ARGS__ },			\
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+		.npipes = sizeof((struct vc4_mock_pipe_desc[]) { __VA_ARGS__ }) /	\
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+			     sizeof(struct vc4_mock_pipe_desc),				\
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+	}
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+
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+static const struct vc4_mock_desc vc4_mock =
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+	VC4_MOCK_DESC(
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+		VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
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+				   VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
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+							DRM_MODE_ENCODER_VIRTUAL,
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+							DRM_MODE_CONNECTOR_WRITEBACK)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv0_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI0,
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+							      DRM_MODE_ENCODER_DSI,
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+							      DRM_MODE_CONNECTOR_DSI),
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DPI,
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+							      DRM_MODE_ENCODER_DPI,
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+							      DRM_MODE_CONNECTOR_DPI)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv1_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI1,
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+							      DRM_MODE_ENCODER_DSI,
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+							      DRM_MODE_CONNECTOR_DSI)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2835_pv2_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI0,
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+							      DRM_MODE_ENCODER_TMDS,
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+							      DRM_MODE_CONNECTOR_HDMIA),
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_VEC,
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+							      DRM_MODE_ENCODER_TVDAC,
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+							      DRM_MODE_CONNECTOR_Composite)),
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+);
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+
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+static const struct vc4_mock_desc vc5_mock =
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+	VC4_MOCK_DESC(
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+		VC4_MOCK_CRTC_DESC(&vc4_txp_crtc_data,
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+				   VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_TXP,
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+							DRM_MODE_ENCODER_VIRTUAL,
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+							DRM_MODE_CONNECTOR_WRITEBACK)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv0_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI0,
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+							      DRM_MODE_ENCODER_DSI,
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+							      DRM_MODE_CONNECTOR_DSI),
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DPI,
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+							      DRM_MODE_ENCODER_DPI,
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+							      DRM_MODE_CONNECTOR_DPI)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv1_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_DSI1,
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+							      DRM_MODE_ENCODER_DSI,
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+							      DRM_MODE_CONNECTOR_DSI)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv2_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI0,
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+							      DRM_MODE_ENCODER_TMDS,
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+							      DRM_MODE_CONNECTOR_HDMIA)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv3_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_VEC,
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+							      DRM_MODE_ENCODER_TVDAC,
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+							      DRM_MODE_CONNECTOR_Composite)),
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+		VC4_MOCK_PIXELVALVE_DESC(&bcm2711_pv4_data,
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+					 VC4_MOCK_OUTPUT_DESC(VC4_ENCODER_TYPE_HDMI1,
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+							      DRM_MODE_ENCODER_TMDS,
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+							      DRM_MODE_CONNECTOR_HDMIA)),
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+);
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+
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+static int __build_one_pipe(struct kunit *test, struct drm_device *drm,
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+			    const struct vc4_mock_pipe_desc *pipe)
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+{
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+	struct vc4_dummy_plane *dummy_plane;
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+	struct drm_plane *plane;
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+	struct vc4_dummy_crtc *dummy_crtc;
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+	struct drm_crtc *crtc;
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+	unsigned int i;
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+
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+	dummy_plane = vc4_dummy_plane(test, drm, DRM_PLANE_TYPE_PRIMARY);
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+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_plane);
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+
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+	plane = &dummy_plane->plane.base;
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+	dummy_crtc = vc4_mock_pv(test, drm, plane, pipe->data);
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+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_crtc);
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+
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+	crtc = &dummy_crtc->crtc.base;
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+	for (i = 0; i < pipe->noutputs; i++) {
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+		const struct vc4_mock_output_desc *mock_output = &pipe->outputs[i];
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+		struct vc4_dummy_output *dummy_output;
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+
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+		dummy_output = vc4_dummy_output(test, drm, crtc,
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+						mock_output->vc4_encoder_type,
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+						mock_output->encoder_type,
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+						mock_output->connector_type);
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+		KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_output);
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+	}
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+
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+	return 0;
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+}
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+
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+static int __build_mock(struct kunit *test, struct drm_device *drm,
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+			const struct vc4_mock_desc *mock)
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+{
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+	unsigned int i;
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+
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+	for (i = 0; i < mock->npipes; i++) {
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+		const struct vc4_mock_pipe_desc *pipe = &mock->pipes[i];
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+		int ret;
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+
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+		ret = __build_one_pipe(test, drm, pipe);
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+		KUNIT_ASSERT_EQ(test, ret, 0);
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+	}
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+
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+	return 0;
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+}
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+
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+static struct vc4_dev *__mock_device(struct kunit *test, bool is_vc5)
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+{
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+	struct drm_device *drm;
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+	const struct drm_driver *drv = is_vc5 ? &vc5_drm_driver : &vc4_drm_driver;
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+	const struct vc4_mock_desc *desc = is_vc5 ? &vc5_mock : &vc4_mock;
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+	struct vc4_dev *vc4;
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+	struct device *dev;
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+	int ret;
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+
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+	dev = drm_kunit_helper_alloc_device(test);
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+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dev);
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+
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+	vc4 = drm_kunit_helper_alloc_drm_device_with_driver(test, dev,
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+							    struct vc4_dev, base,
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+							    drv);
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+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4);
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+
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+	vc4->dev = dev;
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+	vc4->is_vc5 = is_vc5;
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+
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+	vc4->hvs = __vc4_hvs_alloc(vc4, NULL);
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+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, vc4->hvs);
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+
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+	drm = &vc4->base;
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+	ret = __build_mock(test, drm, desc);
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+	KUNIT_ASSERT_EQ(test, ret, 0);
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+
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+	ret = vc4_kms_load(drm);
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+	KUNIT_ASSERT_EQ(test, ret, 0);
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+
 | 
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+	ret = drm_dev_register(drm, 0);
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+	KUNIT_ASSERT_EQ(test, ret, 0);
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+
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+	return vc4;
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+}
 | 
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+
 | 
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+struct vc4_dev *vc4_mock_device(struct kunit *test)
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						|
+{
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+	return __mock_device(test, false);
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						|
+}
 | 
						|
+
 | 
						|
+struct vc4_dev *vc5_mock_device(struct kunit *test)
 | 
						|
+{
 | 
						|
+	return __mock_device(test, true);
 | 
						|
+}
 | 
						|
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock.h b/drivers/gpu/drm/vc4/tests/vc4_mock.h
 | 
						|
new file mode 100644
 | 
						|
index 000000000000..ace5b2e00f4a
 | 
						|
--- /dev/null
 | 
						|
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock.h
 | 
						|
@@ -0,0 +1,60 @@
 | 
						|
+/* SPDX-License-Identifier: GPL-2.0 */
 | 
						|
+
 | 
						|
+#ifndef VC4_MOCK_H_
 | 
						|
+#define VC4_MOCK_H_
 | 
						|
+
 | 
						|
+#include "../vc4_drv.h"
 | 
						|
+
 | 
						|
+static inline
 | 
						|
+struct drm_crtc *vc4_find_crtc_for_encoder(struct kunit *test,
 | 
						|
+					   struct drm_device *drm,
 | 
						|
+					   struct drm_encoder *encoder)
 | 
						|
+{
 | 
						|
+	struct drm_crtc *crtc;
 | 
						|
+
 | 
						|
+	KUNIT_ASSERT_EQ(test, hweight32(encoder->possible_crtcs), 1);
 | 
						|
+
 | 
						|
+	drm_for_each_crtc(crtc, drm)
 | 
						|
+		if (encoder->possible_crtcs & drm_crtc_mask(crtc))
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						|
+			return crtc;
 | 
						|
+
 | 
						|
+	return NULL;
 | 
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+}
 | 
						|
+
 | 
						|
+struct vc4_dummy_plane {
 | 
						|
+	struct vc4_plane plane;
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_plane *vc4_dummy_plane(struct kunit *test,
 | 
						|
+					struct drm_device *drm,
 | 
						|
+					enum drm_plane_type type);
 | 
						|
+
 | 
						|
+struct vc4_dummy_crtc {
 | 
						|
+	struct vc4_crtc crtc;
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_crtc *vc4_mock_pv(struct kunit *test,
 | 
						|
+				   struct drm_device *drm,
 | 
						|
+				   struct drm_plane *plane,
 | 
						|
+				   const struct vc4_crtc_data *data);
 | 
						|
+
 | 
						|
+struct vc4_dummy_output {
 | 
						|
+	struct vc4_encoder encoder;
 | 
						|
+	struct drm_connector connector;
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_output *vc4_dummy_output(struct kunit *test,
 | 
						|
+					  struct drm_device *drm,
 | 
						|
+					  struct drm_crtc *crtc,
 | 
						|
+					  enum vc4_encoder_type vc4_encoder_type,
 | 
						|
+					  unsigned int kms_encoder_type,
 | 
						|
+					  unsigned int connector_type);
 | 
						|
+
 | 
						|
+struct vc4_dev *vc4_mock_device(struct kunit *test);
 | 
						|
+struct vc4_dev *vc5_mock_device(struct kunit *test);
 | 
						|
+
 | 
						|
+int vc4_mock_atomic_add_output(struct kunit *test, struct drm_device *drm,
 | 
						|
+			       enum vc4_encoder_type type,
 | 
						|
+			       struct drm_atomic_state *state);
 | 
						|
+
 | 
						|
+#endif // VC4_MOCK_H_
 | 
						|
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock_crtc.c b/drivers/gpu/drm/vc4/tests/vc4_mock_crtc.c
 | 
						|
new file mode 100644
 | 
						|
index 000000000000..5d12d7beef0e
 | 
						|
--- /dev/null
 | 
						|
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock_crtc.c
 | 
						|
@@ -0,0 +1,41 @@
 | 
						|
+// SPDX-License-Identifier: GPL-2.0
 | 
						|
+
 | 
						|
+#include <drm/drm_atomic_state_helper.h>
 | 
						|
+#include <drm/drm_modeset_helper_vtables.h>
 | 
						|
+
 | 
						|
+#include <kunit/test.h>
 | 
						|
+
 | 
						|
+#include "vc4_mock.h"
 | 
						|
+
 | 
						|
+static const struct drm_crtc_helper_funcs vc4_dummy_crtc_helper_funcs = {
 | 
						|
+	.atomic_check	= vc4_crtc_atomic_check,
 | 
						|
+};
 | 
						|
+
 | 
						|
+static const struct drm_crtc_funcs vc4_dummy_crtc_funcs = {
 | 
						|
+	.atomic_destroy_state	= vc4_crtc_destroy_state,
 | 
						|
+	.atomic_duplicate_state	= vc4_crtc_duplicate_state,
 | 
						|
+	.reset			= vc4_crtc_reset,
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_crtc *vc4_mock_pv(struct kunit *test,
 | 
						|
+				   struct drm_device *drm,
 | 
						|
+				   struct drm_plane *plane,
 | 
						|
+				   const struct vc4_crtc_data *data)
 | 
						|
+{
 | 
						|
+	struct vc4_dummy_crtc *dummy_crtc;
 | 
						|
+	struct vc4_crtc *vc4_crtc;
 | 
						|
+	int ret;
 | 
						|
+
 | 
						|
+	dummy_crtc = kunit_kzalloc(test, sizeof(*dummy_crtc), GFP_KERNEL);
 | 
						|
+	KUNIT_ASSERT_NOT_NULL(test, dummy_crtc);
 | 
						|
+
 | 
						|
+	vc4_crtc = &dummy_crtc->crtc;
 | 
						|
+	ret = __vc4_crtc_init(drm, NULL,
 | 
						|
+			      vc4_crtc, data, plane,
 | 
						|
+			      &vc4_dummy_crtc_funcs,
 | 
						|
+			      &vc4_dummy_crtc_helper_funcs,
 | 
						|
+			      false);
 | 
						|
+	KUNIT_ASSERT_EQ(test, ret, 0);
 | 
						|
+
 | 
						|
+	return dummy_crtc;
 | 
						|
+}
 | 
						|
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock_output.c b/drivers/gpu/drm/vc4/tests/vc4_mock_output.c
 | 
						|
new file mode 100644
 | 
						|
index 000000000000..cb16ab4451f7
 | 
						|
--- /dev/null
 | 
						|
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock_output.c
 | 
						|
@@ -0,0 +1,99 @@
 | 
						|
+// SPDX-License-Identifier: GPL-2.0
 | 
						|
+
 | 
						|
+#include <drm/drm_atomic_state_helper.h>
 | 
						|
+#include <drm/drm_atomic_uapi.h>
 | 
						|
+#include <drm/drm_connector.h>
 | 
						|
+#include <drm/drm_crtc.h>
 | 
						|
+#include <drm/drm_encoder.h>
 | 
						|
+#include <drm/drm_modeset_helper_vtables.h>
 | 
						|
+
 | 
						|
+#include <kunit/test.h>
 | 
						|
+
 | 
						|
+#include "vc4_mock.h"
 | 
						|
+
 | 
						|
+static const struct drm_connector_helper_funcs vc4_dummy_connector_helper_funcs = {
 | 
						|
+};
 | 
						|
+
 | 
						|
+static const struct drm_connector_funcs vc4_dummy_connector_funcs = {
 | 
						|
+	.atomic_destroy_state	= drm_atomic_helper_connector_destroy_state,
 | 
						|
+	.atomic_duplicate_state	= drm_atomic_helper_connector_duplicate_state,
 | 
						|
+	.reset			= drm_atomic_helper_connector_reset,
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_output *vc4_dummy_output(struct kunit *test,
 | 
						|
+					  struct drm_device *drm,
 | 
						|
+					  struct drm_crtc *crtc,
 | 
						|
+					  enum vc4_encoder_type vc4_encoder_type,
 | 
						|
+					  unsigned int kms_encoder_type,
 | 
						|
+					  unsigned int connector_type)
 | 
						|
+{
 | 
						|
+	struct vc4_dummy_output *dummy_output;
 | 
						|
+	struct drm_connector *conn;
 | 
						|
+	struct drm_encoder *enc;
 | 
						|
+	int ret;
 | 
						|
+
 | 
						|
+	dummy_output = kunit_kzalloc(test, sizeof(*dummy_output), GFP_KERNEL);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_output);
 | 
						|
+	dummy_output->encoder.type = vc4_encoder_type;
 | 
						|
+
 | 
						|
+	enc = &dummy_output->encoder.base;
 | 
						|
+	ret = drmm_encoder_init(drm, enc,
 | 
						|
+				NULL,
 | 
						|
+				kms_encoder_type,
 | 
						|
+				NULL);
 | 
						|
+	KUNIT_ASSERT_EQ(test, ret, 0);
 | 
						|
+	enc->possible_crtcs = drm_crtc_mask(crtc);
 | 
						|
+
 | 
						|
+	conn = &dummy_output->connector;
 | 
						|
+	ret = drmm_connector_init(drm, conn,
 | 
						|
+				  &vc4_dummy_connector_funcs,
 | 
						|
+				  connector_type,
 | 
						|
+				  NULL);
 | 
						|
+	KUNIT_ASSERT_EQ(test, ret, 0);
 | 
						|
+
 | 
						|
+	drm_connector_helper_add(conn, &vc4_dummy_connector_helper_funcs);
 | 
						|
+	drm_connector_attach_encoder(conn, enc);
 | 
						|
+
 | 
						|
+	return dummy_output;
 | 
						|
+}
 | 
						|
+
 | 
						|
+static const struct drm_display_mode default_mode = {
 | 
						|
+	DRM_SIMPLE_MODE(640, 480, 64, 48)
 | 
						|
+};
 | 
						|
+
 | 
						|
+int vc4_mock_atomic_add_output(struct kunit *test, struct drm_device *drm,
 | 
						|
+			       enum vc4_encoder_type type,
 | 
						|
+			       struct drm_atomic_state *state)
 | 
						|
+{
 | 
						|
+	struct vc4_dummy_output *output;
 | 
						|
+	struct drm_connector *conn;
 | 
						|
+	struct drm_connector_state *conn_state;
 | 
						|
+	struct drm_encoder *encoder;
 | 
						|
+	struct drm_crtc *crtc;
 | 
						|
+	struct drm_crtc_state *crtc_state;
 | 
						|
+	int ret;
 | 
						|
+
 | 
						|
+	encoder = vc4_find_encoder_by_type(drm, type);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, encoder);
 | 
						|
+
 | 
						|
+	crtc = vc4_find_crtc_for_encoder(test, drm, encoder);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc);
 | 
						|
+
 | 
						|
+	output = container_of(encoder, struct vc4_dummy_output, encoder.base);
 | 
						|
+	conn = &output->connector;
 | 
						|
+	conn_state = drm_atomic_get_connector_state(state, conn);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, conn_state);
 | 
						|
+
 | 
						|
+	ret = drm_atomic_set_crtc_for_connector(conn_state, crtc);
 | 
						|
+	KUNIT_EXPECT_EQ(test, ret, 0);
 | 
						|
+
 | 
						|
+	crtc_state = drm_atomic_get_crtc_state(state, crtc);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, crtc_state);
 | 
						|
+
 | 
						|
+	ret = drm_atomic_set_mode_for_crtc(crtc_state, &default_mode);
 | 
						|
+	KUNIT_EXPECT_EQ(test, ret, 0);
 | 
						|
+
 | 
						|
+	crtc_state->active = true;
 | 
						|
+
 | 
						|
+	return 0;
 | 
						|
+}
 | 
						|
diff --git a/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
 | 
						|
new file mode 100644
 | 
						|
index 000000000000..62b18f5f41db
 | 
						|
--- /dev/null
 | 
						|
+++ b/drivers/gpu/drm/vc4/tests/vc4_mock_plane.c
 | 
						|
@@ -0,0 +1,47 @@
 | 
						|
+// SPDX-License-Identifier: GPL-2.0
 | 
						|
+
 | 
						|
+#include <drm/drm_atomic_state_helper.h>
 | 
						|
+#include <drm/drm_fourcc.h>
 | 
						|
+#include <drm/drm_modeset_helper_vtables.h>
 | 
						|
+#include <drm/drm_plane.h>
 | 
						|
+
 | 
						|
+#include <kunit/test.h>
 | 
						|
+
 | 
						|
+#include "vc4_mock.h"
 | 
						|
+
 | 
						|
+static const struct drm_plane_helper_funcs vc4_dummy_plane_helper_funcs = {
 | 
						|
+};
 | 
						|
+
 | 
						|
+static const struct drm_plane_funcs vc4_dummy_plane_funcs = {
 | 
						|
+	.atomic_destroy_state	= drm_atomic_helper_plane_destroy_state,
 | 
						|
+	.atomic_duplicate_state	= drm_atomic_helper_plane_duplicate_state,
 | 
						|
+	.reset			= drm_atomic_helper_plane_reset,
 | 
						|
+};
 | 
						|
+
 | 
						|
+static const uint32_t vc4_dummy_plane_formats[] = {
 | 
						|
+	DRM_FORMAT_XRGB8888,
 | 
						|
+};
 | 
						|
+
 | 
						|
+struct vc4_dummy_plane *vc4_dummy_plane(struct kunit *test,
 | 
						|
+					struct drm_device *drm,
 | 
						|
+					enum drm_plane_type type)
 | 
						|
+{
 | 
						|
+	struct vc4_dummy_plane *dummy_plane;
 | 
						|
+	struct drm_plane *plane;
 | 
						|
+
 | 
						|
+	dummy_plane = drmm_universal_plane_alloc(drm,
 | 
						|
+						 struct vc4_dummy_plane, plane.base,
 | 
						|
+						 0,
 | 
						|
+						 &vc4_dummy_plane_funcs,
 | 
						|
+						 vc4_dummy_plane_formats,
 | 
						|
+						 ARRAY_SIZE(vc4_dummy_plane_formats),
 | 
						|
+						 NULL,
 | 
						|
+						 DRM_PLANE_TYPE_PRIMARY,
 | 
						|
+						 NULL);
 | 
						|
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, dummy_plane);
 | 
						|
+
 | 
						|
+	plane = &dummy_plane->plane.base;
 | 
						|
+	drm_plane_helper_add(plane, &vc4_dummy_plane_helper_funcs);
 | 
						|
+
 | 
						|
+	return dummy_plane;
 | 
						|
+}
 | 
						|
diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
 | 
						|
index fa8bef840dae..b8903c8b9223 100644
 | 
						|
--- a/drivers/gpu/drm/vc4/vc4_crtc.c
 | 
						|
+++ b/drivers/gpu/drm/vc4/vc4_crtc.c
 | 
						|
@@ -709,8 +709,8 @@ 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);
 | 
						|
@@ -1156,7 +1156,7 @@ 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",
 | 
						|
@@ -1171,7 +1171,7 @@ 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",
 | 
						|
@@ -1186,7 +1186,7 @@ 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",
 | 
						|
@@ -1201,7 +1201,7 @@ 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",
 | 
						|
@@ -1216,7 +1216,7 @@ 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",
 | 
						|
@@ -1231,7 +1231,7 @@ 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",
 | 
						|
@@ -1245,7 +1245,7 @@ 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",
 | 
						|
@@ -1259,7 +1259,7 @@ 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",
 | 
						|
diff --git a/drivers/gpu/drm/vc4/vc4_drv.c b/drivers/gpu/drm/vc4/vc4_drv.c
 | 
						|
index e0ecb3b5b548..1204f13ced27 100644
 | 
						|
--- a/drivers/gpu/drm/vc4/vc4_drv.c
 | 
						|
+++ b/drivers/gpu/drm/vc4/vc4_drv.c
 | 
						|
@@ -196,7 +196,7 @@ static const struct drm_ioctl_desc vc4_drm_ioctls[] = {
 | 
						|
 	DRM_IOCTL_DEF_DRV(VC4_PERFMON_GET_VALUES, vc4_perfmon_get_values_ioctl, DRM_RENDER_ALLOW),
 | 
						|
 };
 | 
						|
 
 | 
						|
-static const struct drm_driver vc4_drm_driver = {
 | 
						|
+const struct drm_driver vc4_drm_driver = {
 | 
						|
 	.driver_features = (DRIVER_MODESET |
 | 
						|
 			    DRIVER_ATOMIC |
 | 
						|
 			    DRIVER_GEM |
 | 
						|
@@ -225,7 +225,7 @@ static const struct drm_driver vc4_drm_driver = {
 | 
						|
 	.patchlevel = DRIVER_PATCHLEVEL,
 | 
						|
 };
 | 
						|
 
 | 
						|
-static const struct drm_driver vc5_drm_driver = {
 | 
						|
+const struct drm_driver vc5_drm_driver = {
 | 
						|
 	.driver_features = (DRIVER_MODESET |
 | 
						|
 			    DRIVER_ATOMIC |
 | 
						|
 			    DRIVER_GEM),
 | 
						|
diff --git a/drivers/gpu/drm/vc4/vc4_drv.h b/drivers/gpu/drm/vc4/vc4_drv.h
 | 
						|
index c79b382a566e..4840b676d715 100644
 | 
						|
--- a/drivers/gpu/drm/vc4/vc4_drv.h
 | 
						|
+++ b/drivers/gpu/drm/vc4/vc4_drv.h
 | 
						|
@@ -25,6 +25,9 @@
 | 
						|
 struct drm_device;
 | 
						|
 struct drm_gem_object;
 | 
						|
 
 | 
						|
+extern const struct drm_driver vc4_drm_driver;
 | 
						|
+extern const struct drm_driver vc5_drm_driver;
 | 
						|
+
 | 
						|
 /* Don't forget to update vc4_bo.c: bo_type_names[] when adding to
 | 
						|
  * this.
 | 
						|
  */
 | 
						|
@@ -528,6 +531,8 @@ struct vc4_crtc_data {
 | 
						|
 	int hvs_output;
 | 
						|
 };
 | 
						|
 
 | 
						|
+extern const struct vc4_crtc_data vc4_txp_crtc_data;
 | 
						|
+
 | 
						|
 struct vc4_pv_data {
 | 
						|
 	struct vc4_crtc_data	base;
 | 
						|
 
 | 
						|
@@ -540,6 +545,15 @@ struct vc4_pv_data {
 | 
						|
 	enum vc4_encoder_type encoder_types[4];
 | 
						|
 };
 | 
						|
 
 | 
						|
+extern const struct vc4_pv_data bcm2835_pv0_data;
 | 
						|
+extern const struct vc4_pv_data bcm2835_pv1_data;
 | 
						|
+extern const struct vc4_pv_data bcm2835_pv2_data;
 | 
						|
+extern const struct vc4_pv_data bcm2711_pv0_data;
 | 
						|
+extern const struct vc4_pv_data bcm2711_pv1_data;
 | 
						|
+extern const struct vc4_pv_data bcm2711_pv2_data;
 | 
						|
+extern const struct vc4_pv_data bcm2711_pv3_data;
 | 
						|
+extern const struct vc4_pv_data bcm2711_pv4_data;
 | 
						|
+
 | 
						|
 struct vc5_gamma_entry {
 | 
						|
 	u32 x_c_terms;
 | 
						|
 	u32 grad_term;
 | 
						|
@@ -944,6 +958,8 @@ int vc4_page_flip(struct drm_crtc *crtc,
 | 
						|
 		  struct drm_pending_vblank_event *event,
 | 
						|
 		  uint32_t flags,
 | 
						|
 		  struct drm_modeset_acquire_ctx *ctx);
 | 
						|
+int vc4_crtc_atomic_check(struct drm_crtc *crtc,
 | 
						|
+			  struct drm_atomic_state *state);
 | 
						|
 struct drm_crtc_state *vc4_crtc_duplicate_state(struct drm_crtc *crtc);
 | 
						|
 void vc4_crtc_destroy_state(struct drm_crtc *crtc,
 | 
						|
 			    struct drm_crtc_state *state);
 | 
						|
diff --git a/drivers/gpu/drm/vc4/vc4_firmware_kms.c b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
 | 
						|
index 036ee3154c79..84414a953ee5 100644
 | 
						|
--- a/drivers/gpu/drm/vc4/vc4_firmware_kms.c
 | 
						|
+++ b/drivers/gpu/drm/vc4/vc4_firmware_kms.c
 | 
						|
@@ -1161,8 +1161,8 @@ vc4_crtc_mode_valid(struct drm_crtc *crtc, const struct drm_display_mode *mode)
 | 
						|
 	return MODE_OK;
 | 
						|
 }
 | 
						|
 
 | 
						|
-static int vc4_crtc_atomic_check(struct drm_crtc *crtc,
 | 
						|
-				 struct drm_atomic_state *state)
 | 
						|
+static int vc4_fkms_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);
 | 
						|
@@ -1341,7 +1341,7 @@ static const struct drm_crtc_funcs vc4_crtc_funcs = {
 | 
						|
 static const struct drm_crtc_helper_funcs vc4_crtc_helper_funcs = {
 | 
						|
 	.mode_set_nofb = vc4_crtc_mode_set_nofb,
 | 
						|
 	.mode_valid = vc4_crtc_mode_valid,
 | 
						|
-	.atomic_check = vc4_crtc_atomic_check,
 | 
						|
+	.atomic_check = vc4_fkms_crtc_atomic_check,
 | 
						|
 	.atomic_flush = vc4_crtc_atomic_flush,
 | 
						|
 	.atomic_enable = vc4_crtc_enable,
 | 
						|
 	.atomic_disable = vc4_crtc_disable,
 | 
						|
diff --git a/drivers/gpu/drm/vc4/vc4_txp.c b/drivers/gpu/drm/vc4/vc4_txp.c
 | 
						|
index 4f7ce5d3e8ad..2b69454b8534 100644
 | 
						|
--- a/drivers/gpu/drm/vc4/vc4_txp.c
 | 
						|
+++ b/drivers/gpu/drm/vc4/vc4_txp.c
 | 
						|
@@ -479,7 +479,7 @@ static irqreturn_t vc4_txp_interrupt(int irq, void *data)
 | 
						|
 	return IRQ_HANDLED;
 | 
						|
 }
 | 
						|
 
 | 
						|
-static const struct vc4_crtc_data vc4_txp_crtc_data = {
 | 
						|
+const struct vc4_crtc_data vc4_txp_crtc_data = {
 | 
						|
 	.name = "txp",
 | 
						|
 	.debugfs_name = "txp_regs",
 | 
						|
 	.hvs_available_channels = BIT(2),
 | 
						|
-- 
 | 
						|
2.33.1
 | 
						|
 |