ARM: OMAP4: Enhance support for DPLLs with 4X multiplier

[firefly-linux-kernel-4.4.55.git] / arch / arm / mach-omap2 / pm.c

diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 331478f9b86403cd73d770bc564602c6b912b01e..f4b3143a8b1d23f104419181c0d266b07e31ad78 100644 (file)
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -40,6 +40,38 @@ static struct omap_device_pm_latency *pm_lats;
  */
 int (*omap_pm_suspend)(void);
 
+#ifdef CONFIG_PM
+/**
+ * struct omap2_oscillator - Describe the board main oscillator latencies
+ * @startup_time: oscillator startup latency
+ * @shutdown_time: oscillator shutdown latency
+ */
+struct omap2_oscillator {
+       u32 startup_time;
+       u32 shutdown_time;
+};
+
+static struct omap2_oscillator oscillator = {
+       .startup_time = ULONG_MAX,
+       .shutdown_time = ULONG_MAX,
+};
+
+void omap_pm_setup_oscillator(u32 tstart, u32 tshut)
+{
+       oscillator.startup_time = tstart;
+       oscillator.shutdown_time = tshut;
+}
+
+void omap_pm_get_oscillator(u32 *tstart, u32 *tshut)
+{
+       if (!tstart || !tshut)
+               return;
+
+       *tstart = oscillator.startup_time;
+       *tshut = oscillator.shutdown_time;
+}
+#endif
+
 static int __init _init_omap_device(char *name)
 {
        struct omap_hwmod *oh;