From: James Wylder <james.wylder@motorola.com>
Date: Mon, 7 Jun 2010 16:28:42 +0000 (-0500)
Subject: [ARM] tegra: stingray: Add board revision identification
X-Git-Tag: firefly_0821_release~9834^2~862
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=e9340eaf97e06dc18877d157c1ef04890728016a;p=firefly-linux-kernel-4.4.55.git

[ARM] tegra: stingray: Add board revision identification

Add function stingray_revision to return current board
revision.

Signed-off-by: James Wylder <james.wylder@motorola.com>
---

diff --git a/arch/arm/mach-tegra/board-stingray.c b/arch/arm/mach-tegra/board-stingray.c
index dae71d8feb3c..52b3e74a5cac 100644
--- a/arch/arm/mach-tegra/board-stingray.c
+++ b/arch/arm/mach-tegra/board-stingray.c
@@ -283,6 +283,29 @@ static void __init stingray_power_off_init(void)
 	}
 }
 
+static int stingray_board_revision = STINGRAY_REVISION_UNKNOWN;
+
+int stingray_revision(void)
+{
+	return stingray_board_revision;
+}
+
+static int __init stingray_revision_parse(char *options)
+{
+	if (!strcmp(options, "m1"))
+		stingray_board_revision = STINGRAY_REVISION_M1;
+	else if (!strcmp(options, "p0"))
+		stingray_board_revision = STINGRAY_REVISION_P0;
+	else if (!strcmp(options, "p1"))
+		stingray_board_revision = STINGRAY_REVISION_P1;
+	else if (!strcmp(options, "p2"))
+		stingray_board_revision = STINGRAY_REVISION_P2;
+
+	return 1;
+}
+
+__setup("hw_rev=", stingray_revision_parse);
+
 static void __init tegra_stingray_init(void)
 {
 	struct clk *clk;
diff --git a/arch/arm/mach-tegra/board-stingray.h b/arch/arm/mach-tegra/board-stingray.h
index 336f7ba40b97..466183778305 100644
--- a/arch/arm/mach-tegra/board-stingray.h
+++ b/arch/arm/mach-tegra/board-stingray.h
@@ -25,5 +25,14 @@ int stingray_wlan_init(void);
 int stingray_sensors_init(void);
 int stingray_touch_init(void);
 int stingray_spi_init(void);
+int stingray_revision(void);
+
+enum {
+	STINGRAY_REVISION_UNKNOWN,
+	STINGRAY_REVISION_M1,
+	STINGRAY_REVISION_P0,
+	STINGRAY_REVISION_P1,
+	STINGRAY_REVISION_P2,
+};
 
 #endif