From c95fa541d23bf3f2a8c59dd0b86167cfb2bb8a05 Mon Sep 17 00:00:00 2001
From: Kartik <kkartik@nvidia.com>
Date: Fri, 11 Nov 2022 18:04:57 +0000
Subject: [PATCH] soc/tegra: fuse-helper: Add platform helper functions

Various downstream drivers needs platform information i.e. if it is
running on silicon or simulation.

This patch adds following functions:
 * tegra_platform_is_silicon()
 * tegra_platform_is_sim()
 * tegra_platform_is_fpga()
 * tegra_platform_is_vdk()

Bug 3777983

Change-Id: Ice319748c5bbdbf3f4e16c3464f60e4a8e316b46
Signed-off-by: Kartik <kkartik@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2807762
Reviewed-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/2894847
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
Tested-by: Laxman Dewangan <ldewangan@nvidia.com>
---
 include/soc/tegra/fuse-helper.h | 42 ++++++++++++++++++++++++++++-----
 1 file changed, 36 insertions(+), 6 deletions(-)

diff --git a/include/soc/tegra/fuse-helper.h b/include/soc/tegra/fuse-helper.h
index 02fd432a..fb8ccba2 100644
--- a/include/soc/tegra/fuse-helper.h
+++ b/include/soc/tegra/fuse-helper.h
@@ -4,6 +4,7 @@
  */
 
 #include <linux/version.h>
+#include <linux/sys_soc.h>
 #include <soc/tegra/fuse.h>
 
 #define FUSE_SKU_INFO	0x10
@@ -19,18 +20,47 @@ static inline u32 tegra_get_sku_id(void)
 
 #ifdef CONFIG_TEGRA_FUSE_UPSTREAM
 
-/*
- * For upstream the following functions to determine if the
- * platform is silicon and simulator are not supported and
- * so for now, always assume that we are silicon.
- */
 static inline bool tegra_platform_is_silicon(void)
 {
-	return true;
+	const struct soc_device_attribute tegra_soc_attrs[] = {
+		{ .revision = "Silicon*" },
+		{/* sentinel */}
+	};
+
+	if (soc_device_match(tegra_soc_attrs))
+		return true;
+
+	return false;
 }
 
 static inline bool tegra_platform_is_sim(void)
 {
+	return !tegra_platform_is_silicon();
+}
+
+static inline bool tegra_platform_is_fpga(void)
+{
+	const struct soc_device_attribute tegra_soc_attrs[] = {
+		{ .revision = "*FPGA" },
+		{/* sentinel */}
+	};
+
+	if (soc_device_match(tegra_soc_attrs))
+		return true;
+
+	return false;
+}
+
+static inline bool tegra_platform_is_vdk(void)
+{
+	const struct soc_device_attribute tegra_soc_attrs[] = {
+		{ .revision = "VDK" },
+		{/* sentinel */}
+	};
+
+	if (soc_device_match(tegra_soc_attrs))
+		return true;
+
 	return false;
 }