video: tegra: host: probe engines based on SKUs

- Xavier has different SKUs based on which different engines are enabled
  or disabled based on fuse setttings.
- This patch probes engines only if they are actually enabled in SKU by
  reading SKU INFO.
- This makes sure that we dont access engines if they are enabled
  inadvertently in DT

Bug 200428527
JIRA VFND-5075

Change-Id: I4d3a4c84452237fdab0426980282cd9c39cc2a28
Signed-off-by: Deepak Bhosale <dbhosale@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1784306
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Damian Halas <dhalas@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Mikko Perttunen <mperttunen@nvidia.com>
Reviewed-by: Nirav Patel <nipatel@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/video/tegra/host/nvdla/nvdla.c

@@ -26,6 +26,7 @@
 #include <linux/dma-attrs.h>
 #include <linux/dma-mapping.h>
 #include <linux/uaccess.h>
+#include <soc/tegra/fuse.h>
 
 #include "dev.h"
 #include "bus_client.h"
@@ -722,6 +723,13 @@ static int nvdla_probe(struct platform_device *pdev)
 		goto err_get_pdata;
 	}
 
+	if (tegra_get_chipid() == TEGRA_CHIPID_TEGRA19 &&
+		tegra_get_sku_id() == 0x9E) {
+		dev_err(dev, "NVDLA IP is disabled in SKU\n");
+		err = -ENODEV;
+		goto err_no_ip;
+	}
+
 	dma_set_mask(dev, DMA_BIT_MASK(40));
 
 	nvdla_dev = devm_kzalloc(dev, sizeof(*nvdla_dev), GFP_KERNEL);
@@ -789,6 +797,7 @@ err_module_init:
 err_get_resources:
 	devm_kfree(dev, nvdla_dev);
 err_alloc_nvdla:
+err_no_ip:
 err_get_pdata:
 
 	return err;