x86/tsc: Use cpu id defines instead of hex constants

asm/intel-family.h contains defines for cpu ids which should be used
instead of hex constants. Convert the switch case in native_calibrate_tsc()
to use the defines before adding more cpu models.

[ tglx: Massaged changelog ]

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Len Brown <len.brown@intel.com>
Cc: Rafael Aquini <aquini@redhat.com>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Link: http://lkml.kernel.org/r/1474289501-31717-2-git-send-email-prarit@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 4 insertions, 3 deletions

diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 78b9cb5a26af..2344758ba8a3 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -23,6 +23,7 @@
 #include <asm/x86_init.h>
 #include <asm/geode.h>
 #include <asm/apic.h>
+#include <asm/intel-family.h>
 
 unsigned int __read_mostly cpu_khz;     /* TSC clocks / usec, not used here */
 EXPORT_SYMBOL(cpu_khz);
@@ -686,11 +687,11 @@ unsigned long native_calibrate_tsc(void)
 
         if (crystal_khz == 0) {
                 switch (boot_cpu_data.x86_model) {
-                case 0x4E:      /* SKL */
-                case 0x5E:      /* SKL */
+                case INTEL_FAM6_SKYLAKE_MOBILE:
+                case INTEL_FAM6_SKYLAKE_DESKTOP:
                         crystal_khz = 24000;    /* 24.0 MHz */
                         break;
-                case 0x5C:      /* BXT */
+                case INTEL_FAM6_ATOM_GOLDMONT:
                         crystal_khz = 19200;    /* 19.2 MHz */
                         break;
                 }