This contains startup and shutdown times for the oscillator. By default
use ULONG_MAX. Oscillator setup is used for calculating and setting up
latencies for sleep modes that disable oscillator.
Based on a patch from Nishanth Menon <nm@xxxxxx>.
Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
---
arch/arm/mach-omap2/pm.c | 30 ++++++++++++++++++++++++++++++
arch/arm/mach-omap2/pm.h | 8 ++++++++
2 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/pm.c b/arch/arm/mach-omap2/pm.c
index 9cb5ced..05ec8ca 100644
--- a/arch/arm/mach-omap2/pm.c
+++ b/arch/arm/mach-omap2/pm.c
@@ -38,6 +38,36 @@ static struct omap_device_pm_latency *pm_lats;
*/
int (*omap_pm_suspend)(void);
+/**
+ * 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;
+}
+
static int __init _init_omap_device(char *name)
{
struct omap_hwmod *oh;
diff --git a/arch/arm/mach-omap2/pm.h b/arch/arm/mach-omap2/pm.h
index 312f2de..af1234c 100644
--- a/arch/arm/mach-omap2/pm.h
+++ b/arch/arm/mach-omap2/pm.h
@@ -121,4 +121,12 @@ static inline int omap4_twl_init(void)
}
#endif
+#ifdef CONFIG_PM
+extern void omap_pm_setup_oscillator(u32 tstart, u32 tshut);
+extern void omap_pm_get_oscillator(u32 *tstart, u32 *tshut);
+#else
+static inline void omap_pm_setup_oscillator(u32 tstart, u32 tshut) { }
+static inline void omap_pm_get_oscillator(u32 *tstart, u32 *tshut) { }
+#endif
+
#endif
--
1.7.4.1
--
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