ARM: ux500: move PM-related PRCMU functions to machine

We are trying to decompose and decentralize the code in
the DB8500 PRCMU out into subdrivers. The code moved in
this patch concerns a group of functions used for
decoupling and recoupling the IRQs from the GIC. During
sleep and idle the Ux500 system will transfer all IRQ
handling to the PRCMU using these functions.

Basically we are left with the two alternatives of code
placement as:

- arch/arm/mach-ux500/pm.c - this because the code is
  closely related to the GIC, and takes ownership of
  some of the registers from the PRCMU related to this
  PM functionality.

- drivers/mfd/db8500-prcmu-pm.c - because the code is
  affecting stuff in the PRCMU register range. But then
  this code needs to remap and handle GIC registers.

This patch implementation is taking the first approach.

Currently the cpuidle driver is the only piece of code
using this set of functions, but it will later also be
used by the suspend/resume code which is currently under
review.

The header file is moved to:
<linux/platform_data/arm-ux500-pm.h>
The function prototypes need to be placed in a globally
visible header since the CPUidle code is planned to move
out to drivers/cpuidle.

Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Rickard Andersson <rickard.andersson@stericsson.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

3 files changed, 21 insertions, 36 deletions

diff --git a/include/linux/mfd/db8500-prcmu.h b/include/linux/mfd/db8500-prcmu.h
index ac943df..0bd6944 100644
--- a/include/linux/mfd/db8500-prcmu.h
+++ b/include/linux/mfd/db8500-prcmu.h
@@ -522,12 +522,6 @@ int db8500_prcmu_load_a9wdog(u8 id, u32 val);
 void db8500_prcmu_system_reset(u16 reset_code);
 int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll);
 u8 db8500_prcmu_get_power_state_result(void);
-int db8500_prcmu_gic_decouple(void);
-int db8500_prcmu_gic_recouple(void);
-int db8500_prcmu_copy_gic_settings(void);
-bool db8500_prcmu_gic_pending_irq(void);
-bool db8500_prcmu_pending_irq(void);
-bool db8500_prcmu_is_cpu_in_wfi(int cpu);
 void db8500_prcmu_enable_wakeups(u32 wakeups);
 int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state);
 int db8500_prcmu_request_clock(u8 clock, bool enable);
diff --git a/include/linux/mfd/dbx500-prcmu.h b/include/linux/mfd/dbx500-prcmu.h
index 8c546cb..fc43cec 100644
--- a/include/linux/mfd/dbx500-prcmu.h
+++ b/include/linux/mfd/dbx500-prcmu.h
@@ -293,36 +293,6 @@ static inline u8 prcmu_get_power_state_result(void)
 	return db8500_prcmu_get_power_state_result();
 }
 
-static inline int prcmu_gic_decouple(void)
-{
-	return db8500_prcmu_gic_decouple();
-}
-
-static inline int prcmu_gic_recouple(void)
-{
-	return db8500_prcmu_gic_recouple();
-}
-
-static inline bool prcmu_gic_pending_irq(void)
-{
-	return db8500_prcmu_gic_pending_irq();
-}
-
-static inline bool prcmu_is_cpu_in_wfi(int cpu)
-{
-	return db8500_prcmu_is_cpu_in_wfi(cpu);
-}
-
-static inline int prcmu_copy_gic_settings(void)
-{
-	return db8500_prcmu_copy_gic_settings();
-}
-
-static inline bool prcmu_pending_irq(void)
-{
-	return db8500_prcmu_pending_irq();
-}
-
 static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
 {
 	return db8500_prcmu_set_epod(epod_id, epod_state);
diff --git a/include/linux/platform_data/arm-ux500-pm.h b/include/linux/platform_data/arm-ux500-pm.h
new file mode 100644
index 0000000..8dff64b
--- /dev/null
+++ b/include/linux/platform_data/arm-ux500-pm.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) ST-Ericsson SA 2010-2013
+ * Author: Rickard Andersson <rickard.andersson@stericsson.com> for
+ *         ST-Ericsson.
+ * Author: Daniel Lezcano <daniel.lezcano@linaro.org> for Linaro.
+ * License terms: GNU General Public License (GPL) version 2
+ *
+ */
+
+#ifndef ARM_UX500_PM_H
+#define ARM_UX500_PM_H
+
+int prcmu_gic_decouple(void);
+int prcmu_gic_recouple(void);
+bool prcmu_gic_pending_irq(void);
+bool prcmu_pending_irq(void);
+bool prcmu_is_cpu_in_wfi(int cpu);
+int prcmu_copy_gic_settings(void);
+void ux500_pm_init(u32 phy_base, u32 size);
+
+#endif /* ARM_UX500_PM_H */