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3 Commits

Author SHA1 Message Date
Lucas Stach
263c3b8044 gpu: ipu-v3: prg: wait for double buffers to be filled on channel startup 
Wait for both double buffer to be filled when first starting a channel.
This makes channel startup a lot more reliable, probably because it allows
the internal state machine to settle before the requests from the IPU are
coming in.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
[p.zabel@pengutronix.de: rebased before switch to runtime PM]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
 2017-10-11 12:04:23 +02:00
Lucas Stach
16e9ab820a gpu: ipu-v3: prg: remove counter load enable 
The counter load enable bit has no effect when the shadow register
set is activated. As we always operate the PRG with shadow enabled
it is safe to remove this.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
 2017-06-08 08:57:13 +02:00
Lucas Stach
ea9c260514 gpu: ipu-v3: add driver for Prefetch Resolve Gasket 
This adds support for the i.MX6 QUadPlus PRG unit. It glues together the
IPU and the PRE units.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
---
v4: add missing ipu_soc->prg_priv
 2017-03-16 10:14:02 +01:00