gpu: nvgpu: register to nvhost for debug dump

Register debug dump callback gk20a_debug_dump_device()
to nvhost using nvhost_register_dump_device()

Unregister the callback in gp10b_tegra_remove()

Bug 200188753

Change-Id: I9161cfdf969208bd8b6160742bf89e327aa2a6b4
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1126792
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 10 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c b/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
index 25673873..587e0a7a 100644
--- a/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
+++ b/drivers/gpu/nvgpu/gp10b/platform_gp10b_tegra.c
@@ -135,6 +135,11 @@ static int gp10b_tegra_probe(struct device *dev)
         }
 
         platform->g->host1x_dev = host1x_pdev;
+        if (platform->g->host1x_dev)
+                nvhost_register_dump_device(platform->g->host1x_dev,
+                                        gk20a_debug_dump_device,
+                                        platform->g->dev);
+
         platform->bypass_smmu = !device_is_iommuable(dev);
         platform->disable_bigpage = platform->bypass_smmu;
 
@@ -182,6 +187,11 @@ static int gp10b_tegra_late_probe(struct device *dev)
 
 static int gp10b_tegra_remove(struct device *dev)
 {
+        struct gk20a_platform *platform = dev_get_drvdata(dev);
+
+        if (platform->g->host1x_dev)
+                nvhost_unregister_dump_device(platform->g->host1x_dev);
+
         /* remove gk20a power subdomain from host1x */
         nvhost_unregister_client_domain(dev_to_genpd(dev));
         gr_gp10b_remove_sysfs(dev);