rockchip: rk3399: add stopwatch functions to m0
There is system timer in m0, we can use it to implement a set of
stopwatch functions for measuring timeouts.
Signed-off-by: Lin Huang <hl@rock-chips.com>
Signed-off-by: Derek Basehore <dbasehore@chromium.org>
diff --git a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
index 7f4f34c..23be3c3 100644
--- a/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
+++ b/plat/rockchip/rk3399/drivers/m0/include/rk3399_mcu.h
@@ -44,6 +44,9 @@
#define mmio_clrsetbits_32(addr, clear, set) \
mmio_write_32(addr, (mmio_read_32(addr) & ~(clear)) | (set))
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+
#define MCU_BASE 0x40000000
#define PMU_BASE (MCU_BASE + 0x07310000)
#define CRU_BASE_ADDR 0x47760000
@@ -55,5 +58,8 @@
void handle_suspend(void);
void handle_dram(void);
+void stopwatch_init_usecs_expire(unsigned int usecs);
+int stopwatch_expired(void);
+void stopwatch_reset(void);
#endif /* __RK3399_MCU_H__ */