ChanServ changed the topic of #linux-rockchip to: Rockchip development discussion | Wiki at http://linux-rockchip.info | Logs at http://irclog.whitequark.org/linux-rockchip | ML at http://groups.google.com/group/linux-rockchip
<stdint> phh, could you tell something about hardware 2d acceleration
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<phh> stdint isn't the api in discussion somewhere after drm/rga patch to lkml?
<stdint> phh, I am not the manage the xserver, but I though there are some 2d hardware acceleration driver in kernel before rockchip rga
<stdint> like the samsung g2d
<phh> That's what I've read from the LKML indeed
<phh> Though last mail in that thread is 6 months old. Someone needs to wake things up... (nope, not me i have no knowledge there)
<stdint> phh, could you give ma link to thread?
<phh> "[RFC PATCH v1 0/4] Add Rockchip RGA support"
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<stdint> phh, thank you
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<wzyy2> I have tried to use rga accel in xserver..
<wzyy2> And the result is it's too slow.
<wzyy2> So the work in rga is stop.
<wzyy2> I think GPU can do all things. : )
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<wzyy2> I would like to try wayland, rather than spending time on rga. It's too slow and have many limits with small size buffer( Although glamor is slow too)
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<wzyy2> IMO, RGA is not suitable for ddx. It's only useful in specific situation.
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<phh> wzyy2 oh ok, thanks for the info.
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<phh> fwiw i've ported mali to mainline (4.9-rc4 atm) in https://github.com/phhusson/linux/tree/rk3288 and rockchip_vpu and vtl_ts in https://github.com/phhusson/rockchip_forwardports
<phh> (i'll try to move mali as out-of-tree build later)
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<stdint> phh, I have ported it before
<stdint> phh, and that rockchip vpu v4l2 driver would be dropped later
<stdint> I am writing a new one, but currently I have some other relation job to do
<stdint> so it is paused in those 3-4 weeks
<stdint> phh, but could you test the pwm backlight?
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<phh> stdint: arf, I tried to search if anyone did it but failed :( thanks
<phh> stdint: what's your question about pwm backlight? the bug I had about PWM IP switch?
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<phh> stdint: pwm backlight is ok, though I have to cherry-pick http://lists.infradead.org/pipermail/linux-arm-kernel/2014-August/280715.html because of my bad bootloader
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<stdint> phh, paul and I have met the pwm backlight can't output pwm pulse
<stdint> but mmind00 told me that he didn't meet that
<stdint> so I have to check it again
<phh> stdint: do you know if your bootloader properly sets RK3288_GRF_PWM_ENABLE_OFFSET/RK3288_GRF_PWM_ENABLE_BIT ?
<phh> though I'm using pwm0 while you're using pwm1, there could be a difference there
<stdint> phh, not sure, I would check it later
<mmind00> stdint: correct ... this weekend I was running 4.9-rc4 on two different Veyron Chromebooks and display backlight was still working nicely
<mmind00> same for the pwm-regulator used there
<stdint> so maybe I would try that patch
<stdint> mmind00, so the u-boot could be same
<stdint> oh, it is coreboot
<phh> stdint: I know that on mainline kernel, the same config without the patch I've mentioned, I have backlight working on my chromebook, but not on my tablet (using usual rk3288loader_v2.19)
<stdint> then it could be confirmed as a bug
<phh> afaik, the general conclusion there was that it's bootloader's work to set this register. and it actually does it with "proper" DTS (but it doesn't match mainline DTS)
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