Re: [PATCH v8 05/27] drm/tests: Add output bpc tests

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Hi Maxime,

Am Donnerstag, 7. März 2024, 14:38:32 CET schrieb Maxime Ripard:
> Now that we're tracking the output bpc count in the connector state,
> let's add a few tests to make sure it works as expected.
> 
> Reviewed-by: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
> Signed-off-by: Maxime Ripard <mripard@xxxxxxxxxx>
> ---
>  drivers/gpu/drm/tests/Makefile                     |   1 +
>  .../gpu/drm/tests/drm_atomic_state_helper_test.c   | 436 +++++++++++++++++++++
>  drivers/gpu/drm/tests/drm_connector_test.c         | 140 +++++++
>  drivers/gpu/drm/tests/drm_kunit_edid.h             | 106 +++++
>  4 files changed, 683 insertions(+)
> 
> [snip]
> diff --git a/drivers/gpu/drm/tests/drm_kunit_edid.h b/drivers/gpu/drm/tests/drm_kunit_edid.h
> new file mode 100644
> index 000000000000..2bba316de064
> --- /dev/null
> +++ b/drivers/gpu/drm/tests/drm_kunit_edid.h
> @@ -0,0 +1,106 @@
> +#ifndef DRM_KUNIT_EDID_H_
> +#define DRM_KUNIT_EDID_H_
> +
> +/*
> + * edid-decode (hex):
> + *
> + * 00 ff ff ff ff ff ff 00 31 d8 2a 00 00 00 00 00
> + * 00 21 01 03 81 a0 5a 78 02 00 00 00 00 00 00 00
> + * 00 00 00 20 00 00 01 01 01 01 01 01 01 01 01 01
> + * 01 01 01 01 01 01 02 3a 80 18 71 38 2d 40 58 2c
> + * 45 00 40 84 63 00 00 1e 00 00 00 fc 00 54 65 73
> + * 74 20 45 44 49 44 0a 20 20 20 00 00 00 fd 00 32
> + * 46 1e 46 0f 00 0a 20 20 20 20 20 20 00 00 00 10
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 92
> + *
> + * 02 03 1b 81 e3 05 00 20 41 10 e2 00 4a 6d 03 0c
> + * 00 12 34 00 28 20 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> + * 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0
> + *
> + * ----------------
> + *
> + * Block 0, Base EDID:
> + *   EDID Structure Version & Revision: 1.3
> + *   Vendor & Product Identification:
> + *     Manufacturer: LNX
> + *     Model: 42
> + *     Made in: 2023
> + *   Basic Display Parameters & Features:
> + *     Digital display
> + *     DFP 1.x compatible TMDS
> + *     Maximum image size: 160 cm x 90 cm
> + *     Gamma: 2.20
> + *     Monochrome or grayscale display
> + *     First detailed timing is the preferred timing
> + *   Color Characteristics:
> + *     Red  : 0.0000, 0.0000
> + *     Green: 0.0000, 0.0000
> + *     Blue : 0.0000, 0.0000
> + *     White: 0.0000, 0.0000
> + *   Established Timings I & II:
> + *     DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
> + *   Standard Timings: none
> + *   Detailed Timing Descriptors:
> + *     DTD 1:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (1600 mm x 900 mm)
> + *                  Hfront   88 Hsync  44 Hback  148 Hpol P
> + *                  Vfront    4 Vsync   5 Vback   36 Vpol P
> + *     Display Product Name: 'Test EDID'
> + *     Display Range Limits:
> + *       Monitor ranges (GTF): 50-70 Hz V, 30-70 kHz H, max dotclock 150 MHz
> + *     Dummy Descriptor:
> + *   Extension blocks: 1
> + * Checksum: 0x92
> + *
> + * ----------------
> + *
> + * Block 1, CTA-861 Extension Block:
> + *   Revision: 3
> + *   Underscans IT Video Formats by default
> + *   Native detailed modes: 1
> + *   Colorimetry Data Block:
> + *     sRGB
> + *   Video Data Block:
> + *     VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz
> + *   Video Capability Data Block:
> + *     YCbCr quantization: No Data
> + *     RGB quantization: Selectable (via AVI Q)
> + *     PT scan behavior: No Data
> + *     IT scan behavior: Always Underscanned
> + *     CE scan behavior: Always Underscanned
> + *   Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
> + *     Source physical address: 1.2.3.4
> + *     Maximum TMDS clock: 200 MHz
> + *     Extended HDMI video details:
> + * Checksum: 0xd0  Unused space in Extension Block: 100 bytes
> + */
> +const unsigned char test_edid_hdmi_1080p_rgb_max_200mhz[] = {

Shouldn't this be a static one? It's defined in a header.

Best regards,
Alexander

> +  0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x31, 0xd8, 0x2a, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x21, 0x01, 0x03, 0x81, 0xa0, 0x5a, 0x78,
> +  0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20,
> +  0x00, 0x00, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
> +  0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x02, 0x3a, 0x80, 0x18, 0x71, 0x38,
> +  0x2d, 0x40, 0x58, 0x2c, 0x45, 0x00, 0x40, 0x84, 0x63, 0x00, 0x00, 0x1e,
> +  0x00, 0x00, 0x00, 0xfc, 0x00, 0x54, 0x65, 0x73, 0x74, 0x20, 0x45, 0x44,
> +  0x49, 0x44, 0x0a, 0x20, 0x20, 0x20, 0x00, 0x00, 0x00, 0xfd, 0x00, 0x32,
> +  0x46, 0x00, 0x00, 0xc4, 0x00, 0x0a, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
> +  0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x41, 0x02, 0x03, 0x1b, 0x81,
> +  0xe3, 0x05, 0x00, 0x20, 0x41, 0x10, 0xe2, 0x00, 0x4a, 0x6d, 0x03, 0x0c,
> +  0x00, 0x12, 0x34, 0x00, 0x28, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
> +  0x00, 0x00, 0x00, 0xd0
> +};
> +
> +#endif // DRM_KUNIT_EDID_H_
> 
> 


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