Commit 7afd1194 authored by Mikko Perttunen's avatar Mikko Perttunen Committed by Thierry Reding
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gpu: host1x: Program interrupt destinations on Tegra234 



On Tegra234, each Host1x VM has 8 interrupt lines. Each syncpoint
can be configured with which interrupt line should be used for
threshold interrupt, allowing for load balancing.

For now, to keep backwards compatibility, just set all syncpoints
to the first interrupt.

Signed-off-by: default avatarMikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
parent ee8f894f

drivers/gpu/host1x/hw/intr_hw.c

+11 −0
Original line number Diff line number Diff line
@@ -76,6 +76,17 @@ static void intr_hw_init(struct host1x *host, u32 cpm) 
	/* update host clocks per usec */

	host1x_sync_writel(host, cpm, HOST1X_SYNC_USEC_CLK);

#endif

#if HOST1X_HW >= 8

	u32 id;



	/*

	 * Program threshold interrupt destination among 8 lines per VM,

	 * per syncpoint. For now, just direct all to the first interrupt

	 * line.

	 */

	for (id = 0; id < host->info->nb_pts; id++)

		host1x_sync_writel(host, 0, HOST1X_SYNC_SYNCPT_INTR_DEST(id));

#endif

}



static int