ARM: OMAP4: ID: Improve features detection and check

Replaces several flags bearing the same meaning. There is no need
to set flags due to different omap types here, it can be checked
in appropriate places as well.

Cc: Tony Lindgren <tony@atomide.com>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: linux-omap@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Acked-by: Nishanth Menon <nm@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 7 insertions, 18 deletions

diff --git a/arch/arm/mach-omap2/id.c b/arch/arm/mach-omap2/id.c
index cf2362ccb234..3c47a19a580f 100644
--- a/arch/arm/mach-omap2/id.c
+++ b/arch/arm/mach-omap2/id.c
@@ -28,6 +28,9 @@
 #include "soc.h"
 #include "control.h"
 
+#define OMAP4_SILICON_TYPE_STANDARD             0x01
+#define OMAP4_SILICON_TYPE_PERFORMANCE          0x02
+
 static unsigned int omap_revision;
 static const char *cpu_rev;
 u32 omap_features;
@@ -273,25 +276,11 @@ void __init omap4xxx_check_features(void)
 {
         u32 si_type;
 
-        if (cpu_is_omap443x())
-                omap_features |= OMAP4_HAS_MPU_1GHZ;
-
+        si_type =
+        (read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1) >> 16) & 0x03;
 
-        if (cpu_is_omap446x()) {
-                si_type =
-                        read_tap_reg(OMAP4_CTRL_MODULE_CORE_STD_FUSE_PROD_ID_1);
-                switch ((si_type & (3 << 16)) >> 16) {
-                case 2:
-                        /* High performance device */
-                        omap_features |= OMAP4_HAS_MPU_1_5GHZ;
-                        break;
-                case 1:
-                default:
-                        /* Standard device */
-                        omap_features |= OMAP4_HAS_MPU_1_2GHZ;
-                        break;
-                }
-        }
+        if (si_type == OMAP4_SILICON_TYPE_PERFORMANCE)
+                omap_features = OMAP4_HAS_PERF_SILICON;
 }
 
 void __init ti81xx_check_features(void)