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dma: ti: k3-udma: Do not touch RT registers before channel configuration 

Upcoming sysfw (2019.03) will not open the channelized firewalls during
init, it only going to do so in response to the channel configuration
message.

Remove the channel state checks done before the channel configuration and
move it after the configuration for warning purposes.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
This commit is contained in:
Peter Ujfalusi 2019-04-25 12:08:15 +05:30 committed by Tom Rini
parent 32aebcf244
commit 5487772517
1 changed files with 9 additions and 24 deletions
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33
drivers/dma/ti/k3-udma.c
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@ -575,14 +575,6 @@ static int udma_get_tchan(struct udma_chan *uc)
pr_debug("chan%d: got tchan%d\n", uc->id, uc->tchan->id);
if (udma_is_chan_running(uc)) {
dev_warn(ud->dev, "chan%d: tchan%d is running!\n", uc->id,
uc->tchan->id);
udma_stop(uc);
if (udma_is_chan_running(uc))
dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
}
return 0;
}
@ -602,14 +594,6 @@ static int udma_get_rchan(struct udma_chan *uc)
pr_debug("chan%d: got rchan%d\n", uc->id, uc->rchan->id);
if (udma_is_chan_running(uc)) {
dev_warn(ud->dev, "chan%d: rchan%d is running!\n", uc->id,
uc->rchan->id);
udma_stop(uc);
if (udma_is_chan_running(uc))
dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
}
return 0;
}
@ -652,14 +636,6 @@ static int udma_get_chan_pair(struct udma_chan *uc)
pr_debug("chan%d: got t/rchan%d pair\n", uc->id, chan_id);
if (udma_is_chan_running(uc)) {
dev_warn(ud->dev, "chan%d: t/rchan%d pair is running!\n",
uc->id, chan_id);
udma_stop(uc);
if (udma_is_chan_running(uc))
dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
}
return 0;
}
@ -1071,6 +1047,15 @@ static int udma_alloc_chan_resources(struct udma_chan *uc)
}
}
if (udma_is_chan_running(uc)) {
dev_warn(ud->dev, "chan%d: is running!\n", uc->id);
udma_stop(uc);
if (udma_is_chan_running(uc)) {
dev_err(ud->dev, "chan%d: won't stop!\n", uc->id);
goto err_free_res;
}
}
/* PSI-L pairing */
ret = udma_navss_psil_pair(ud, uc->src_thread, uc->dst_thread);
if (ret) {