media: cx231xx: Fix Elgato Video Capture V2 default norm for PAL regions#149
media: cx231xx: Fix Elgato Video Capture V2 default norm for PAL regions#149TaterYo wants to merge 1 commit intoCachyOS:masterfrom
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Hi, could someone review this? It's a simple one line fix for PAL users of the Elgato Video Capture V2. Tested and working on CachyOS. Thanks! |
| @@ -0,0 +1,12 @@ | |||
| ``` | |||
| .agc_analog_digital_select_gpio = 0x0c, | ||
| .gpio_pin_status_mask = 0x4001000, | ||
| - .norm = V4L2_STD_NTSC, | ||
| + .norm = V4L2_STD_PAL, |
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What about V4L2_STD_ALL? I worry this change regresses people that are using NTSC.
edit: I think V4L2_STD_NTSC | V4L2_STD_PAL should also work, and is more conservative compared to V4L2_STD_ALL, can you first test the former before testing the latter? Thanks.
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Thanks for the feedback! I tested both V4L2_STD_NTSC | V4L2_STD_PAL (0x00000fff) and V4L2_STD_ALL (0xffffffff) via v4l2-ctl at runtime but both still produce a scrambled image. The issue is that the cx25840 decoder chip ignores runtime standard changes on this device — the norm must be set correctly in the driver card definition for the hardware to initialize properly at firmware load time. Changing to V4L2_STD_PAL in the card definition is the only fix that works. I'm based in Norway so PAL is correct for my region. Happy to test any other suggestions!
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Can you report this to kernel bugzilla? I don' think I can accept this change due to aforementioned regression.
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The Elgato Video Capture V2 (card=16) has its default norm hardcoded to V4L2_STD_NTSC, causing rainbow-coloured scrambled image for users in PAL regions even when PAL is set via v4l2-ctl at runtime. Change the default norm to V4L2_STD_PAL to fix this. Tested on CachyOS with a JVC HR-J758 VCR in Norway.