From: Roger Quadros <ext-roger.quadros@xxxxxxxxx>
Return sane values for all *_get_opp() and *_get_freq() functions with
OMAP_PM_NONE selected.
Other modules e.g. Smartreflex will be requiring sane values of OPP
and CPU Frequency irrespective of the PM layer being used.
Added file arch/arm/plat-omap/omap-pm-none.c
Signed-off-by: Roger Quadros <ext-roger.quadros@xxxxxxxxx>
---
arch/arm/mach-omap2/Makefile | 1 +
arch/arm/plat-omap/Makefile | 2 +
arch/arm/plat-omap/common.c | 5 --
arch/arm/plat-omap/include/mach/omap-pm.h | 52 +++++++++++++++++---
arch/arm/plat-omap/omap-pm-none.c | 74 +++++++++++++++++++++++++++++
5 files changed, 121 insertions(+), 13 deletions(-)
create mode 100644 arch/arm/plat-omap/omap-pm-none.c
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index b82df3f..383ed61 100644
--- a/arch/arm/mach-omap2/Makefile
+++ b/arch/arm/mach-omap2/Makefile
@@ -35,6 +35,7 @@ obj-$(CONFIG_ARCH_OMAP2) += clock24xx.o
obj-$(CONFIG_ARCH_OMAP3) += clock34xx.o
obj-$(CONFIG_OMAP_PM_SRF) += resource34xx.o
obj-$(CONFIG_OMAP_PM_NOOP) += resource34xx.o
+obj-$(CONFIG_OMAP_PM_NONE) += resource34xx.o
# DSP
obj-$(CONFIG_OMAP_MBOX_FWK) += mailbox_mach.o
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 038cdaf..20ac1b3 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -31,3 +31,5 @@ obj-$(CONFIG_OMAP_PM_NOOP) += omap-pm-noop.o \
resource.o
obj-$(CONFIG_OMAP_PM_SRF) += omap-pm-srf.o \
resource.o
+obj-$(CONFIG_OMAP_PM_NONE) += omap-pm-none.o \
+ resource.o
diff --git a/arch/arm/plat-omap/common.c b/arch/arm/plat-omap/common.c
index 634ca39..4c9fdd0 100644
--- a/arch/arm/plat-omap/common.c
+++ b/arch/arm/plat-omap/common.c
@@ -46,11 +46,6 @@ int omap_bootloader_tag_len;
struct omap_board_config_kernel *omap_board_config;
int omap_board_config_size;
-#ifdef CONFIG_OMAP_PM_NONE
-struct omap_opp *mpu_opps;
-struct omap_opp *dsp_opps;
-struct omap_opp *l3_opps;
-#endif
#ifdef CONFIG_OMAP_BOOT_TAG
diff --git a/arch/arm/plat-omap/include/mach/omap-pm.h b/arch/arm/plat-omap/include/mach/omap-pm.h
index f690a05..3edb665 100644
--- a/arch/arm/plat-omap/include/mach/omap-pm.h
+++ b/arch/arm/plat-omap/include/mach/omap-pm.h
@@ -58,13 +58,9 @@ extern struct omap_opp *l3_opps;
* framework starts. The "_if_" is to avoid name collisions with the
* PM idle-loop code.
*/
-#ifdef CONFIG_OMAP_PM_NONE
-#define omap_pm_if_early_init(a, b, c) 0
-#else
int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table,
struct omap_opp *dsp_opp_table,
struct omap_opp *l3_opp_table);
-#endif
/**
* omap_pm_if_init - OMAP PM init code called after clock fw init
@@ -72,11 +68,7 @@ int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table,
* The main initialization code. OPP tables are passed in here. The
* "_if_" is to avoid name collisions with the PM idle-loop code.
*/
-#ifdef CONFIG_OMAP_PM_NONE
-#define omap_pm_if_init() 0
-#else
int __init omap_pm_if_init(void);
-#endif
/**
* omap_pm_if_exit - OMAP PM exit code
@@ -121,7 +113,11 @@ void omap_pm_if_exit(void);
*
* No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t) { }
+#else
void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t);
+#endif
/**
@@ -152,7 +148,11 @@ void omap_pm_set_max_mpu_wakeup_lat(struct device *dev, long t);
*
* No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r) { }
+#else
void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r);
+#endif
/**
@@ -179,7 +179,11 @@ void omap_pm_set_min_bus_tput(struct device *dev, u8 agent_id, unsigned long r);
*
* No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t) { }
+#else
void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t);
+#endif
/**
@@ -208,7 +212,11 @@ void omap_pm_set_max_dev_wakeup_lat(struct device *dev, long t);
*
* No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_set_max_sdma_lat(struct device *dev, long t) { }
+#else
void omap_pm_set_max_sdma_lat(struct device *dev, long t);
+#endif
/*
@@ -222,7 +230,11 @@ void omap_pm_set_max_sdma_lat(struct device *dev, long t);
* frequency entries. The final item in the array should have .rate =
* .opp_id = 0.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline const struct omap_opp *omap_pm_dsp_get_opp_table(void) { return NULL; }
+#else
const struct omap_opp *omap_pm_dsp_get_opp_table(void);
+#endif
/**
* omap_pm_dsp_set_min_opp - receive desired OPP target ID from DSP Bridge
@@ -233,7 +245,11 @@ const struct omap_opp *omap_pm_dsp_get_opp_table(void);
* information that code receives from the DSP/BIOS load estimator is the
* target OPP ID; hence, this interface. No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_dsp_set_min_opp(u8 opp_id) { }
+#else
void omap_pm_dsp_set_min_opp(u8 opp_id);
+#endif
/**
* omap_pm_dsp_get_opp - report the current DSP OPP ID
@@ -279,7 +295,11 @@ u8 omap_pm_vdd2_get_opp(void);
* Returns a pointer to a struct cpufreq_frequency_table array or NULL
* upon error.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline struct cpufreq_frequency_table **omap_pm_cpu_get_freq_table(void) { return NULL; }
+#else
struct cpufreq_frequency_table **omap_pm_cpu_get_freq_table(void);
+#endif
/**
* omap_pm_cpu_set_freq - set the current minimum MPU frequency
@@ -290,7 +310,11 @@ struct cpufreq_frequency_table **omap_pm_cpu_get_freq_table(void);
* Intended to be called by plat-omap/cpu_omap.c:omap_target(). No
* return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_cpu_set_freq(unsigned long f) { }
+#else
void omap_pm_cpu_set_freq(unsigned long f);
+#endif
/**
* omap_pm_cpu_get_freq - report the current CPU frequency
@@ -320,7 +344,11 @@ unsigned long omap_pm_cpu_get_freq(void);
* continue counting. Returns the number of context losses for this device,
* or -EINVAL upon error.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline int omap_pm_get_dev_context_loss_count(struct device *dev) { return 0; }
+#else
int omap_pm_get_dev_context_loss_count(struct device *dev);
+#endif
/*
@@ -336,7 +364,11 @@ int omap_pm_get_dev_context_loss_count(struct device *dev);
* function is intended to be called by the clockdomain code, not by drivers.
* No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_pwrdm_active(struct powerdomain *pwrdm) { }
+#else
void omap_pm_pwrdm_active(struct powerdomain *pwrdm);
+#endif
/**
@@ -348,6 +380,10 @@ void omap_pm_pwrdm_active(struct powerdomain *pwrdm);
* clock. This function is intended to be called by the clockdomain
* code, not by drivers. No return value.
*/
+#ifdef CONFIG_OMAP_PM_NONE
+static inline void omap_pm_pwrdm_inactive(struct powerdomain *pwrdm) { }
+#else
void omap_pm_pwrdm_inactive(struct powerdomain *pwrdm);
+#endif
#endif
diff --git a/arch/arm/plat-omap/omap-pm-none.c b/arch/arm/plat-omap/omap-pm-none.c
new file mode 100644
index 0000000..a47f037
--- /dev/null
+++ b/arch/arm/plat-omap/omap-pm-none.c
@@ -0,0 +1,74 @@
+/*
+ * omap-pm-none.c - OMAP power management interface - PM_NONE version
+ *
+ * This code implements the OMAP power management interface to
+ * drivers, CPUIdle, CPUFreq, and DSP Bridge.
+ * It implements a dummy interface for setting/changing resources
+ * but it returns valid values while querying CPU frequncy and DSP OPP.
+ *
+ * Interface developed by (in alphabetical order):
+ * Karthik Dasu, Tony Lindgren, Rajendra Nayak, Sakari Poussa, Veeramanikandan
+ * Raju, Anand Sawant, Igor Stoppa, Paul Walmsley, Richard Woodruff
+ */
+
+#undef DEBUG
+
+#include <linux/init.h>
+#include <linux/cpufreq.h>
+#include <linux/device.h>
+
+/* Interface documentation is in mach/omap-pm.h */
+#include <mach/omap-pm.h>
+#include <mach/resource.h>
+#include <mach/powerdomain.h>
+
+struct omap_opp *dsp_opps;
+struct omap_opp *mpu_opps;
+struct omap_opp *l3_opps;
+
+u8 omap_pm_dsp_get_opp(void)
+{
+ return resource_get_level("vdd1_opp");
+}
+
+u8 omap_pm_vdd1_get_opp(void)
+{
+ return resource_get_level("vdd1_opp");
+}
+
+u8 omap_pm_vdd2_get_opp(void)
+{
+ return resource_get_level("vdd2_opp");
+}
+
+unsigned long omap_pm_cpu_get_freq(void)
+{
+ return resource_get_level("mpu_freq");
+}
+
+/*
+ * Should be called before clk framework since clk fw will call
+ * omap_pm_pwrdm_{in,}active()
+ */
+int __init omap_pm_if_early_init(struct omap_opp *mpu_opp_table,
+ struct omap_opp *dsp_opp_table,
+ struct omap_opp *l3_opp_table)
+{
+ mpu_opps = mpu_opp_table;
+ dsp_opps = dsp_opp_table;
+ l3_opps = l3_opp_table;
+ return 0;
+}
+
+/* Must be called after clock framework is initialized */
+int __init omap_pm_if_init(void)
+{
+ resource_init(resources_omap);
+ return 0;
+}
+
+void omap_pm_if_exit(void)
+{
+ /* Deallocate CPUFreq frequency table here */
+}
+
--
1.6.0.4
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