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>

2 files changed, 9 insertions, 24 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)
diff --git a/arch/arm/mach-omap2/soc.h b/arch/arm/mach-omap2/soc.h
index 070096496e20..f31d90774de0 100644
--- a/arch/arm/mach-omap2/soc.h
+++ b/arch/arm/mach-omap2/soc.h
@@ -435,9 +435,7 @@ extern u32 omap_features;
 #define OMAP3_HAS_IO_WAKEUP             BIT(6)
 #define OMAP3_HAS_SDRC                  BIT(7)
 #define OMAP3_HAS_IO_CHAIN_CTRL         BIT(8)
-#define OMAP4_HAS_MPU_1GHZ              BIT(9)
-#define OMAP4_HAS_MPU_1_2GHZ            BIT(10)
-#define OMAP4_HAS_MPU_1_5GHZ            BIT(11)
+#define OMAP4_HAS_PERF_SILICON          BIT(9)
 
 
 #define OMAP3_HAS_FEATURE(feat,flag)                    \
@@ -465,9 +463,7 @@ static inline unsigned int omap4_has_ ##feat(void)	\
         return omap_features & OMAP4_HAS_ ##flag;       \
 }                                                       \
 
-OMAP4_HAS_FEATURE(mpu_1ghz, MPU_1GHZ)
-OMAP4_HAS_FEATURE(mpu_1_2ghz, MPU_1_2GHZ)
-OMAP4_HAS_FEATURE(mpu_1_5ghz, MPU_1_5GHZ)
+OMAP4_HAS_FEATURE(perf_silicon, PERF_SILICON)
 
 #endif  /* __ASSEMBLY__ */