nv-tegra-mirror/linux-nv-oot
1
0
Fork 0
mirror of git://nv-tegra.nvidia.com/linux-nv-oot.git synced 2025-12-25 02:32:08 +03:00
Code Issues Packages Projects Releases Wiki Activity

gpu: host1x: Syncpoint interrupt sharding

Browse Source 
Support sharded syncpoint interrupts on Tegra234+. This feature
allows specifying one of eight interrupt lines for each syncpoint
to lower processing latency of syncpoint threshold
interrupts.

Jira HOSTX-4710

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Change-Id: Idfcb04e97c944b8e1c26a8f62e8393180692eb30
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2898521
Reviewed-by: Santosh BS <santoshb@nvidia.com>
Reviewed-by: Johnny Liu <johnliu@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Mikko Perttunen
2023-03-24 12:15:48 +02:00
committed by mobile promotions
parent 2a4c0e02e1
commit 1b89a8395f
3 changed files with 60 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/gpu/host1x/dev.c
View File

@@ -795,7 +795,7 @@ static int host1x_probe(struct platform_device *pdev)
{
struct resource *res;
struct host1x *host;
int err;
int err, i;
host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL);
if (!host)
@@ -833,9 +833,29 @@ static int host1x_probe(struct platform_device *pdev)
return PTR_ERR(host->actmon_regs);
}
host->syncpt_irq = platform_get_irq(pdev, 0);
if (host->syncpt_irq < 0)
return host->syncpt_irq;
for (i = 0; i < ARRAY_SIZE(host->syncpt_irqs); i++) {
char irq_name[] = "syncptX";
sprintf(irq_name, "syncpt%d", i);
err = platform_get_irq_byname_optional(pdev, irq_name);
if (err == -ENXIO)
break;
if (err < 0)
return err;
host->syncpt_irqs[i] = err;
}
host->num_syncpt_irqs = i;
/* Device tree without irq names */
if (i == 0) {
host->syncpt_irqs[0] = platform_get_irq(pdev, 0);
if (host->syncpt_irqs[0] < 0)
return host->syncpt_irqs[0];
host->num_syncpt_irqs = 1;
}
host->general_irq = platform_get_irq_byname_optional(pdev, "host1x");