#include <linux/platform_device.h>
#include <asm/div64.h>
+#include <asm/cnt32_to_63.h>
#include <asm/hardware.h>
#include <asm/system.h>
#include <asm/pgtable.h>
/*
* This is the SA11x0 sched_clock implementation. This has
- * a resolution of 271ns, and a maximum value of 1165s.
+ * a resolution of 271ns, and a maximum value of 32025597s (370 days).
+ *
+ * The return value is guaranteed to be monotonic in that range as
+ * long as there is always less than 582 seconds between successive
+ * calls to this function.
+ *
* ( * 1E9 / 3686400 => * 78125 / 288)
*/
unsigned long long sched_clock(void)
{
- unsigned long long v;
+ unsigned long long v = cnt32_to_63(OSCR);
- v = (unsigned long long)OSCR * 78125;
- do_div(v, 288);
+ /* the <<1 gets rid of the cnt_32_to_63 top bit saving on a bic insn */
+ v *= 78125<<1;
+ do_div(v, 288<<1);
return v;
}
+int gpio_direction_input(unsigned gpio)
+{
+ unsigned long flags;
+
+ if (gpio > GPIO_MAX)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ GPDR &= ~GPIO_GPIO(gpio);
+ local_irq_restore(flags);
+ return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_input);
+
+int gpio_direction_output(unsigned gpio, int value)
+{
+ unsigned long flags;
+
+ if (gpio > GPIO_MAX)
+ return -EINVAL;
+
+ local_irq_save(flags);
+ gpio_set_value(gpio, value);
+ GPDR |= GPIO_GPIO(gpio);
+ local_irq_restore(flags);
+ return 0;
+}
+
+EXPORT_SYMBOL(gpio_direction_output);
+
/*
* Default power-off for SA1100
*/