[ARM] pxa: introduce cpu_is_pxa26x()

PXA26x (PXA261/262) is actually a PXA250 with stacked Intel(R)
StartaFlash. And this can be decided by bit 3 (PKG_TYPE) of
BOOT_DEF register.

Due to this extra I/O register access, make cpu_is_pxa26x() a
public function instead of a macro.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 7 insertions, 1 deletions

diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index a3a6aff5f0d..3caa74a10d1 100644
--- a/arch/arm/mach-pxa/pxa25x.c
+++ b/arch/arm/mach-pxa/pxa25x.c
@@ -36,6 +36,12 @@
 #include "devices.h"
 #include "clock.h"
 
+int cpu_is_pxa26x(void)
+{
+        return cpu_is_pxa250() && ((BOOT_DEF & 0x8) == 0);
+}
+EXPORT_SYMBOL_GPL(cpu_is_pxa26x);
+
 /*
  * Various clock factors driven by the CCCR register.
  */
@@ -372,7 +378,7 @@ static int __init pxa25x_init(void)
         }
 
         /* Only add HWUART for PXA255/26x; PXA210/250 do not have it. */
-        if (cpu_is_pxa255()) {
+        if (cpu_is_pxa255() || cpu_is_pxa26x()) {
                 clks_register(&pxa25x_hwuart_clk, 1);
                 ret = platform_device_register(&pxa_device_hwuart);
         }