gpu: host1x: Add Tegra186 support

Add support for the implementation of Host1x present on the Tegra186.
The register space has been shuffled around a little bit, requiring
addition of some chip-specific code sections. Tegra186 also adds
several new features, most importantly the hypervisor, but those are
not yet supported with this commit.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>

1 files changed, 18 insertions, 11 deletions

diff --git a/drivers/gpu/host1x/hw/intr_hw.c b/drivers/gpu/host1x/hw/intr_hw.c
index 37ebb51703fa..329239237090 100644
--- a/drivers/gpu/host1x/hw/intr_hw.c
+++ b/drivers/gpu/host1x/hw/intr_hw.c
@@ -72,6 +72,23 @@ static void _host1x_intr_disable_all_syncpt_intrs(struct host1x *host)
 	}
 }
 
+static void intr_hw_init(struct host1x *host, u32 cpm)
+{
+#if HOST1X_HW < 6
+	/* disable the ip_busy_timeout. this prevents write drops */
+	host1x_sync_writel(host, 0, HOST1X_SYNC_IP_BUSY_TIMEOUT);
+
+	/*
+	 * increase the auto-ack timout to the maximum value. 2d will hang
+	 * otherwise on Tegra2.
+	 */
+	host1x_sync_writel(host, 0xff, HOST1X_SYNC_CTXSW_TIMEOUT_CFG);
+
+	/* update host clocks per usec */
+	host1x_sync_writel(host, cpm, HOST1X_SYNC_USEC_CLK);
+#endif
+}
+
 static int
 _host1x_intr_init_host_sync(struct host1x *host, u32 cpm,
 			    void (*syncpt_thresh_work)(struct work_struct *))
@@ -92,17 +109,7 @@ _host1x_intr_init_host_sync(struct host1x *host, u32 cpm,
 		return err;
 	}
 
-	/* disable the ip_busy_timeout. this prevents write drops */
-	host1x_sync_writel(host, 0, HOST1X_SYNC_IP_BUSY_TIMEOUT);
-
-	/*
-	 * increase the auto-ack timout to the maximum value. 2d will hang
-	 * otherwise on Tegra2.
-	 */
-	host1x_sync_writel(host, 0xff, HOST1X_SYNC_CTXSW_TIMEOUT_CFG);
-
-	/* update host clocks per usec */
-	host1x_sync_writel(host, cpm, HOST1X_SYNC_USEC_CLK);
+	intr_hw_init(host, cpm);
 
 	return 0;
 }