mfd: Move to the new db500 PRCMU API

Now that we have a shared API between the DB8500 and DB5500
PRCMU's, switch to using this neutral API instead. We delete the
parts of db8500-prcmu.h that is now PRCMU-neutral, and calls will
be diverted to respective driver. Common registers are in
dbx500-prcmu-regs.h and common accessors and defines in
<linux/mfd/dbx500-prcmu.h> This way we get a a lot more
abstraction and code reuse.
Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

arch/arm/mach-ux500/cpu.c

@@ -53,7 +53,7 @@ void __init ux500_init_irq(void)
 	if (cpu_is_u5500())
 		db5500_prcmu_early_init();
 	if (cpu_is_u8500())
-		prcmu_early_init();
+		db8500_prcmu_early_init();
 	clk_init();
 }
 

drivers/cpufreq/db8500-cpufreq.c

@@ -12,7 +12,7 @@
 #include <linux/cpufreq.h>
 #include <linux/delay.h>
 #include <linux/slab.h>
-#include <linux/mfd/db8500-prcmu.h>
+#include <linux/mfd/dbx500-prcmu.h>
 #include <mach/id.h>
 
 static struct cpufreq_frequency_table freq_table[] = {

drivers/mfd/db5500-prcmu-regs.h

-/*
- * Copyright (C) STMicroelectronics 2009
- * Copyright (C) ST-Ericsson SA 2010
- *
- * Author: Kumar Sanghvi <kumar.sanghvi@stericsson.com>
- * Author: Sundar Iyer <sundar.iyer@stericsson.com>
- *
- * License Terms: GNU General Public License v2
- *
- * PRCM Unit registers
- */
-
-#ifndef __MACH_PRCMU_REGS_H
-#define __MACH_PRCMU_REGS_H
-
-#include <mach/hardware.h>
-
-#define PRCM_ARM_PLLDIVPS	(_PRCMU_BASE + 0x118)
-#define PRCM_ARM_PLLDIVPS_ARM_BRM_RATE		0x3f
-#define PRCM_ARM_PLLDIVPS_MAX_MASK		0xf
-
-#define PRCM_PLLARM_LOCKP       (_PRCMU_BASE + 0x0a8)
-#define PRCM_PLLARM_LOCKP_PRCM_PLLARM_LOCKP3	0x2
-
-#define PRCM_ARM_CHGCLKREQ	(_PRCMU_BASE + 0x114)
-#define PRCM_ARM_CHGCLKREQ_PRCM_ARM_CHGCLKREQ	0x1
-
-#define PRCM_PLLARM_ENABLE	(_PRCMU_BASE + 0x98)
-#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_ENABLE	0x1
-#define PRCM_PLLARM_ENABLE_PRCM_PLLARM_COUNTON	0x100
-
-#define PRCM_ARMCLKFIX_MGT	(_PRCMU_BASE + 0x0)
-#define PRCM_A9_RESETN_CLR	(_PRCMU_BASE + 0x1f4)
-#define PRCM_A9_RESETN_SET	(_PRCMU_BASE + 0x1f0)
-#define PRCM_ARM_LS_CLAMP	(_PRCMU_BASE + 0x30c)
-#define PRCM_SRAM_A9		(_PRCMU_BASE + 0x308)
-
-/* ARM WFI Standby signal register */
-#define PRCM_ARM_WFI_STANDBY    (_PRCMU_BASE + 0x130)
-#define PRCM_IOCR		(_PRCMU_BASE + 0x310)
-#define PRCM_IOCR_IOFORCE			0x1
-
-/* CPU mailbox registers */
-#define PRCM_MBOX_CPU_VAL	(_PRCMU_BASE + 0x0fc)
-#define PRCM_MBOX_CPU_SET	(_PRCMU_BASE + 0x100)
-#define PRCM_MBOX_CPU_CLR	(_PRCMU_BASE + 0x104)
-
-/* Dual A9 core interrupt management unit registers */
-#define PRCM_A9_MASK_REQ	(_PRCMU_BASE + 0x328)
-#define PRCM_A9_MASK_REQ_PRCM_A9_MASK_REQ	0x1
-
-#define PRCM_A9_MASK_ACK	(_PRCMU_BASE + 0x32c)
-#define PRCM_ARMITMSK31TO0	(_PRCMU_BASE + 0x11c)
-#define PRCM_ARMITMSK63TO32	(_PRCMU_BASE + 0x120)
-#define PRCM_ARMITMSK95TO64	(_PRCMU_BASE + 0x124)
-#define PRCM_ARMITMSK127TO96	(_PRCMU_BASE + 0x128)
-#define PRCM_POWER_STATE_VAL	(_PRCMU_BASE + 0x25C)
-#define PRCM_ARMITVAL31TO0	(_PRCMU_BASE + 0x260)
-#define PRCM_ARMITVAL63TO32	(_PRCMU_BASE + 0x264)
-#define PRCM_ARMITVAL95TO64	(_PRCMU_BASE + 0x268)
-#define PRCM_ARMITVAL127TO96	(_PRCMU_BASE + 0x26C)
-
-#define PRCM_HOSTACCESS_REQ	(_PRCMU_BASE + 0x334)
-#define ARM_WAKEUP_MODEM	0x1
-
-#define PRCM_ARM_IT1_CLEAR	(_PRCMU_BASE + 0x48C)
-#define PRCM_ARM_IT1_VAL	(_PRCMU_BASE + 0x494)
-#define PRCM_HOLD_EVT		(_PRCMU_BASE + 0x174)
-
-#define PRCM_ITSTATUS0		(_PRCMU_BASE + 0x148)
-#define PRCM_ITSTATUS1		(_PRCMU_BASE + 0x150)
-#define PRCM_ITSTATUS2		(_PRCMU_BASE + 0x158)
-#define PRCM_ITSTATUS3		(_PRCMU_BASE + 0x160)
-#define PRCM_ITSTATUS4		(_PRCMU_BASE + 0x168)
-#define PRCM_ITSTATUS5		(_PRCMU_BASE + 0x484)
-#define PRCM_ITCLEAR5		(_PRCMU_BASE + 0x488)
-#define PRCM_ARMIT_MASKXP70_IT	(_PRCMU_BASE + 0x1018)
-
-/* System reset register */
-#define PRCM_APE_SOFTRST	(_PRCMU_BASE + 0x228)
-
-/* Level shifter and clamp control registers */
-#define PRCM_MMIP_LS_CLAMP_SET     (_PRCMU_BASE + 0x420)
-#define PRCM_MMIP_LS_CLAMP_CLR     (_PRCMU_BASE + 0x424)
-
-/* PRCMU clock/PLL/reset registers */
-#define PRCM_PLLDSI_FREQ           (_PRCMU_BASE + 0x500)
-#define PRCM_PLLDSI_ENABLE         (_PRCMU_BASE + 0x504)
-#define PRCM_PLLDSI_LOCKP          (_PRCMU_BASE + 0x508)
-#define PRCM_LCDCLK_MGT            (_PRCMU_BASE + 0x044)
-#define PRCM_MCDECLK_MGT           (_PRCMU_BASE + 0x064)
-#define PRCM_HDMICLK_MGT           (_PRCMU_BASE + 0x058)
-#define PRCM_TVCLK_MGT             (_PRCMU_BASE + 0x07c)
-#define PRCM_DSI_PLLOUT_SEL        (_PRCMU_BASE + 0x530)
-#define PRCM_DSITVCLK_DIV          (_PRCMU_BASE + 0x52C)
-#define PRCM_PLLDSI_LOCKP          (_PRCMU_BASE + 0x508)
-#define PRCM_APE_RESETN_SET        (_PRCMU_BASE + 0x1E4)
-#define PRCM_APE_RESETN_CLR        (_PRCMU_BASE + 0x1E8)
-#define PRCM_CLKOCR		   (_PRCMU_BASE + 0x1CC)
-
-/* ePOD and memory power signal control registers */
-#define PRCM_EPOD_C_SET            (_PRCMU_BASE + 0x410)
-#define PRCM_SRAM_LS_SLEEP         (_PRCMU_BASE + 0x304)
-
-/* Debug power control unit registers */
-#define PRCM_POWER_STATE_SET       (_PRCMU_BASE + 0x254)
-
-/* Miscellaneous unit registers */
-#define PRCM_DSI_SW_RESET          (_PRCMU_BASE + 0x324)
-#define PRCM_GPIOCR                (_PRCMU_BASE + 0x138)
-#define PRCM_GPIOCR_DBG_STM_MOD_CMD1            0x800
-#define PRCM_GPIOCR_DBG_UARTMOD_CMD0            0x1
-
-
-#endif /* __MACH_PRCMU__REGS_H */

drivers/mfd/db5500-prcmu.c

@@ -20,11 +20,11 @@
 #include <linux/jiffies.h>
 #include <linux/bitops.h>
 #include <linux/interrupt.h>
-#include <linux/mfd/db5500-prcmu.h>
+#include <linux/mfd/dbx500-prcmu.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 #include <mach/db5500-regs.h>
-#include "db5500-prcmu-regs.h"
+#include "dbx500-prcmu-regs.h"
 
 #define _PRCM_MB_HEADER (tcdm_base + 0xFE8)
 #define PRCM_REQ_MB0_HEADER (_PRCM_MB_HEADER + 0x0)
@@ -315,31 +315,31 @@ static bool read_mailbox_0(void)
 		r = false;
 		break;
 	}
-	writel(MBOX_BIT(0), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(0), PRCM_ARM_IT1_CLR);
 	return r;
 }
 
 static bool read_mailbox_1(void)
 {
-	writel(MBOX_BIT(1), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(1), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
 static bool read_mailbox_2(void)
 {
-	writel(MBOX_BIT(2), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(2), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
 static bool read_mailbox_3(void)
 {
-	writel(MBOX_BIT(3), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(3), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
 static bool read_mailbox_4(void)
 {
-	writel(MBOX_BIT(4), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(4), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
@@ -360,19 +360,19 @@ static bool read_mailbox_5(void)
 		print_unknown_header_warning(5, header);
 		break;
 	}
-	writel(MBOX_BIT(5), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(5), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
 static bool read_mailbox_6(void)
 {
-	writel(MBOX_BIT(6), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(6), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
 static bool read_mailbox_7(void)
 {
-	writel(MBOX_BIT(7), PRCM_ARM_IT1_CLEAR);
+	writel(MBOX_BIT(7), PRCM_ARM_IT1_CLR);
 	return false;
 }
 
@@ -434,7 +434,7 @@ int __init db5500_prcmu_init(void)
 		return -ENODEV;
 
 	/* Clean up the mailbox interrupts after pre-kernel code. */
-	writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLEAR);
+	writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR);
 
 	r = request_threaded_irq(IRQ_DB5500_PRCMU1, prcmu_irq_handler,
 		prcmu_irq_thread_fn, 0, "prcmu", NULL);

drivers/mfd/db8500-prcmu.c

@@ -27,14 +27,14 @@
 #include <linux/platform_device.h>
 #include <linux/uaccess.h>
 #include <linux/mfd/core.h>
-#include <linux/mfd/db8500-prcmu.h>
+#include <linux/mfd/dbx500-prcmu.h>
 #include <linux/regulator/db8500-prcmu.h>
 #include <linux/regulator/machine.h>
 #include <mach/hardware.h>
 #include <mach/irqs.h>
 #include <mach/db8500-regs.h>
 #include <mach/id.h>
-#include "db8500-prcmu-regs.h"
+#include "dbx500-prcmu-regs.h"
 
 /* Offset for the firmware version within the TCPM */
 #define PRCMU_FW_VERSION_OFFSET 0xA4
@@ -507,7 +507,7 @@ static struct {
 } prcmu_version;
 
 
-int prcmu_enable_dsipll(void)
+int db8500_prcmu_enable_dsipll(void)
 {
 	int i;
 	unsigned int plldsifreq;
@@ -542,7 +542,7 @@ int prcmu_enable_dsipll(void)
 	return 0;
 }
 
-int prcmu_disable_dsipll(void)
+int db8500_prcmu_disable_dsipll(void)
 {
 	/* Disable dsi pll */
 	writel(PRCMU_DISABLE_PLLDSI, PRCM_PLLDSI_ENABLE);
@@ -551,7 +551,7 @@ int prcmu_disable_dsipll(void)
 	return 0;
 }
 
-int prcmu_set_display_clocks(void)
+int db8500_prcmu_set_display_clocks(void)
 {
 	unsigned long flags;
 	unsigned int dsiclk;
@@ -734,7 +734,7 @@ int prcmu_config_clkout(u8 clkout, u8 source, u8 div)
 	return r;
 }
 
-int prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll)
+int db8500_prcmu_set_power_state(u8 state, bool keep_ulp_clk, bool keep_ap_pll)
 {
 	unsigned long flags;
 
@@ -791,7 +791,7 @@ static void config_wakeups(void)
 	last_abb_events = abb_events;
 }
 
-void prcmu_enable_wakeups(u32 wakeups)
+void db8500_prcmu_enable_wakeups(u32 wakeups)
 {
 	unsigned long flags;
 	u32 bits;
@@ -812,7 +812,7 @@ void prcmu_enable_wakeups(u32 wakeups)
 	spin_unlock_irqrestore(&mb0_transfer.lock, flags);
 }
 
-void prcmu_config_abb_event_readout(u32 abb_events)
+void db8500_prcmu_config_abb_event_readout(u32 abb_events)
 {
 	unsigned long flags;
 
@@ -824,7 +824,7 @@ void prcmu_config_abb_event_readout(u32 abb_events)
 	spin_unlock_irqrestore(&mb0_transfer.lock, flags);
 }
 
-void prcmu_get_abb_event_buffer(void __iomem **buf)
+void db8500_prcmu_get_abb_event_buffer(void __iomem **buf)
 {
 	if (readb(tcdm_base + PRCM_ACK_MB0_READ_POINTER) & 1)
 		*buf = (tcdm_base + PRCM_ACK_MB0_WAKEUP_1_4500);
@@ -833,13 +833,13 @@ void prcmu_get_abb_event_buffer(void __iomem **buf)
 }
 
 /**
- * prcmu_set_arm_opp - set the appropriate ARM OPP
+ * db8500_prcmu_set_arm_opp - set the appropriate ARM OPP
  * @opp: The new ARM operating point to which transition is to be made
  * Returns: 0 on success, non-zero on failure
  *
  * This function sets the the operating point of the ARM.
  */
-int prcmu_set_arm_opp(u8 opp)
+int db8500_prcmu_set_arm_opp(u8 opp)
 {
 	int r;
 
@@ -870,11 +870,11 @@ int prcmu_set_arm_opp(u8 opp)
 }
 
 /**
- * prcmu_get_arm_opp - get the current ARM OPP
+ * db8500_prcmu_get_arm_opp - get the current ARM OPP
  *
  * Returns: the current ARM OPP
  */
-int prcmu_get_arm_opp(void)
+int db8500_prcmu_get_arm_opp(void)
 {
 	return readb(tcdm_base + PRCM_ACK_MB1_CURRENT_ARM_OPP);
 }
@@ -1024,14 +1024,14 @@ int prcmu_release_usb_wakeup_state(void)
 }
 
 /**
- * prcmu_set_epod - set the state of a EPOD (power domain)
+ * db8500_prcmu_set_epod - set the state of a EPOD (power domain)
  * @epod_id: The EPOD to set
  * @epod_state: The new EPOD state
  *
  * This function sets the state of a EPOD (power domain). It may not be called
  * from interrupt context.
  */
-int prcmu_set_epod(u16 epod_id, u8 epod_state)
+int db8500_prcmu_set_epod(u16 epod_id, u8 epod_state)
 {
 	int r = 0;
 	bool ram_retention = false;
@@ -1221,14 +1221,14 @@ static int request_reg_clock(u8 clock, bool enable)
 }
 
 /**
- * prcmu_request_clock() - Request for a clock to be enabled or disabled.
+ * db8500_prcmu_request_clock() - Request for a clock to be enabled or disabled.
  * @clock:      The clock for which the request is made.
  * @enable:     Whether the clock should be enabled (true) or disabled (false).
  *
  * This function should only be used by the clock implementation.
  * Do not use it from any other place!
  */
-int prcmu_request_clock(u8 clock, bool enable)
+int db8500_prcmu_request_clock(u8 clock, bool enable)
 {
 	if (clock < PRCMU_NUM_REG_CLOCKS)
 		return request_reg_clock(clock, enable);
@@ -1240,7 +1240,7 @@ int prcmu_request_clock(u8 clock, bool enable)
 		return -EINVAL;
 }
 
-int prcmu_config_esram0_deep_sleep(u8 state)
+int db8500_prcmu_config_esram0_deep_sleep(u8 state)
 {
 	if ((state > ESRAM0_DEEP_SLEEP_STATE_RET) ||
 	    (state < ESRAM0_DEEP_SLEEP_STATE_OFF))
@@ -1515,18 +1515,18 @@ void prcmu_ac_sleep_req()
 	mutex_unlock(&mb0_transfer.ac_wake_lock);
 }
 
-bool prcmu_is_ac_wake_requested(void)
+bool db8500_prcmu_is_ac_wake_requested(void)
 {
 	return (atomic_read(&ac_wake_req_state) != 0);
 }
 
 /**
- * prcmu_system_reset - System reset
+ * db8500_prcmu_system_reset - System reset
  *
- * Saves the reset reason code and then sets the APE_SOFRST register which
+ * Saves the reset reason code and then sets the APE_SOFTRST register which
  * fires interrupt to fw
  */
-void prcmu_system_reset(u16 reset_code)
+void db8500_prcmu_system_reset(u16 reset_code)
 {
 	writew(reset_code, (tcdm_base + PRCM_SW_RST_REASON));
 	writel(1, PRCM_APE_SOFTRST);
@@ -1782,7 +1782,7 @@ static struct irq_chip prcmu_irq_chip = {
 	.irq_unmask	= prcmu_irq_unmask,
 };
 
-void __init prcmu_early_init(void)
+void __init db8500_prcmu_early_init(void)
 {
 	unsigned int i;
 

drivers/regulator/db8500-prcmu.c

@@ -13,7 +13,7 @@
 #include <linux/err.h>
 #include <linux/spinlock.h>
 #include <linux/platform_device.h>
-#include <linux/mfd/db8500-prcmu.h>
+#include <linux/mfd/dbx500-prcmu.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/db8500-prcmu.h>

include/linux/mfd/db5500-prcmu.h

@@ -5,21 +5,35 @@
  *
  * U5500 PRCMU API.
  */
-#ifndef __MACH_PRCMU_U5500_H
-#define __MACH_PRCMU_U5500_H
+#ifndef __MFD_DB5500_PRCMU_H
+#define __MFD_DB5500_PRCMU_H
 
-#ifdef CONFIG_UX500_SOC_DB5500
+#ifdef CONFIG_MFD_DB5500_PRCMU
 
 void db5500_prcmu_early_init(void);
-
+int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state);
+int db5500_prcmu_set_display_clocks(void);
+int db5500_prcmu_disable_dsipll(void);
+int db5500_prcmu_enable_dsipll(void);
 int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size);
 int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size);
+void db5500_prcmu_enable_wakeups(u32 wakeups);
+int db5500_prcmu_request_clock(u8 clock, bool enable);
+void db5500_prcmu_config_abb_event_readout(u32 abb_events);
+void db5500_prcmu_get_abb_event_buffer(void __iomem **buf);
+int prcmu_resetout(u8 resoutn, u8 state);
+int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk,
+	bool keep_ap_pll);
+int db5500_prcmu_config_esram0_deep_sleep(u8 state);
+void db5500_prcmu_system_reset(u16 reset_code);
+u16 db5500_prcmu_get_reset_code(void);
+bool db5500_prcmu_is_ac_wake_requested(void);
+int db5500_prcmu_set_arm_opp(u8 opp);
+int db5500_prcmu_get_arm_opp(void);
 
 #else /* !CONFIG_UX500_SOC_DB5500 */
 
-static inline void db5500_prcmu_early_init(void)
-{
-}
+static inline void db5500_prcmu_early_init(void) {}
 
 static inline int db5500_prcmu_abb_read(u8 slave, u8 reg, u8 *value, u8 size)
 {
@@ -31,15 +45,75 @@ static inline int db5500_prcmu_abb_write(u8 slave, u8 reg, u8 *value, u8 size)
 	return -ENOSYS;
 }
 
-#endif /* CONFIG_UX500_SOC_DB5500 */
+static inline int db5500_prcmu_request_clock(u8 clock, bool enable)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_set_display_clocks(void)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_disable_dsipll(void)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_enable_dsipll(void)
+{
+	return 0;
+}
 
-static inline int db5500_prcmu_config_abb_event_readout(u32 abb_events)
+static inline int db5500_prcmu_config_esram0_deep_sleep(u8 state)
 {
-#ifdef CONFIG_MACH_U5500_SIMULATOR
 	return 0;
-#else
-	return -1;
-#endif
 }
 
-#endif /* __MACH_PRCMU_U5500_H */
+static inline void db5500_prcmu_enable_wakeups(u32 wakeups) {}
+
+static inline int prcmu_resetout(u8 resoutn, u8 state)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_set_epod(u16 epod_id, u8 epod_state)
+{
+	return 0;
+}
+
+static inline void db5500_prcmu_get_abb_event_buffer(void __iomem **buf) {}
+static inline void db5500_prcmu_config_abb_event_readout(u32 abb_events) {}
+
+static inline int db5500_prcmu_set_power_state(u8 state, bool keep_ulp_clk,
+	bool keep_ap_pll)
+{
+	return 0;
+}
+
+static inline void db5500_prcmu_system_reset(u16 reset_code) {}
+
+static inline u16 db5500_prcmu_get_reset_code(void)
+{
+	return 0;
+}
+
+static inline bool db5500_prcmu_is_ac_wake_requested(void)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_set_arm_opp(u8 opp)
+{
+	return 0;
+}
+
+static inline int db5500_prcmu_get_arm_opp(void)
+{
+	return 0;
+}
+
+
+#endif /* CONFIG_MFD_DB5500_PRCMU */
+
+#endif /* __MFD_DB5500_PRCMU_H */

include/linux/mfd/dbx500-prcmu.h

@@ -240,7 +240,7 @@ static inline int prcmu_set_power_state(u8 state, bool keep_ulp_clk,
 static inline int prcmu_set_epod(u16 epod_id, u8 epod_state)
 {
 	if (machine_is_u5500())
-		return db5500_prcmu_set_epod(epod_id, epod_state);
+		return -EINVAL;
 	else
 		return db8500_prcmu_set_epod(epod_id, epod_state);
 }
@@ -295,7 +295,7 @@ int prcmu_get_ddr_opp(void);
 static inline int prcmu_set_arm_opp(u8 opp)
 {
 	if (machine_is_u5500())
-		return db5500_prcmu_set_arm_opp(opp);
+		return -EINVAL;
 	else
 		return db8500_prcmu_set_arm_opp(opp);
 }
@@ -303,7 +303,7 @@ static inline int prcmu_set_arm_opp(u8 opp)
 static inline int prcmu_get_arm_opp(void)
 {
 	if (machine_is_u5500())
-		return db5500_prcmu_get_arm_opp();
+		return -EINVAL;
 	else
 		return db8500_prcmu_get_arm_opp();
 }
@@ -362,7 +362,7 @@ static inline int prcmu_enable_dsipll(void)
 static inline int prcmu_config_esram0_deep_sleep(u8 state)
 {
 	if (machine_is_u5500())
-		return db5500_prcmu_config_esram0_deep_sleep(state);
+		return -EINVAL;
 	else
 		return db8500_prcmu_config_esram0_deep_sleep(state);
 }