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gpu: host1x: Rewrite syncpoint interrupt handling

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Move from the old, complex intr handling code to a new implementation
based on dma_fences. While there is a fair bit of churn to get there,
the new implementation is much simpler and likely faster as well due
to allowing signaling directly from interrupt context.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Mikko Perttunen
2023-01-19 15:09:20 +02:00
committed by Thierry Reding
parent c24973ed79
commit 625d4ffb43
9 changed files with 166 additions and 497 deletions
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4
drivers/gpu/host1x/dev.c
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@@ -516,7 +516,7 @@ static int host1x_probe(struct platform_device *pdev)
return PTR_ERR(host->regs);
}
syncpt_irq = platform_get_irq(pdev, 0);
host->syncpt_irq = platform_get_irq(pdev, 0);
if (syncpt_irq < 0)
return syncpt_irq;
@@ -578,7 +578,7 @@ static int host1x_probe(struct platform_device *pdev)
goto free_contexts;
}
err = host1x_intr_init(host, syncpt_irq);
err = host1x_intr_init(host);
if (err) {
dev_err(&pdev->dev, "failed to initialize interrupts\n");
goto deinit_syncpt;