diff options
| author | Mikko Perttunen <mperttunen@nvidia.com> | 2023-09-01 14:40:07 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2023-10-11 22:52:44 +0200 |
| commit | f017f1e9cb3458a86f586a171e284e2ec46286db (patch) | |
| tree | db1371d5319f1597a2b84f4b9c433c0c5d42e948 /drivers/gpu/host1x/dev.c | |
| parent | b7c00cdf6df58b1d48d31d57f9431a200b0d0c88 (diff) | |
gpu: host1x: Syncpoint interrupt sharding
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.
Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230901114008.672433-1-cyndis@kapsi.fi
Diffstat (limited to 'drivers/gpu/host1x/dev.c')
| -rw-r--r-- | drivers/gpu/host1x/dev.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/gpu/host1x/dev.c b/drivers/gpu/host1x/dev.c index b8ac44e7d11a..42fd504abbcd 100644 --- a/drivers/gpu/host1x/dev.c +++ b/drivers/gpu/host1x/dev.c @@ -488,7 +488,7 @@ static int host1x_get_resets(struct host1x *host) static int host1x_probe(struct platform_device *pdev) { struct host1x *host; - int err; + int err, i; host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); if (!host) @@ -516,9 +516,30 @@ static int host1x_probe(struct platform_device *pdev) return PTR_ERR(host->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; + } mutex_init(&host->devices_lock); INIT_LIST_HEAD(&host->devices); |