ARM: OMAP3+: PRM: add common APIs for prm_vp_check/clear_txdone

PRM driver now only exports a generic API for clearing / checking
VP txdone status.

Signed-off-by: Tero Kristo <t-kristo@ti.com>

arch/arm/mach-omap2/prm.h

@@ -147,6 +147,8 @@ struct prm_ll_data {
 				     u16 offset);
 	void (*reset_system)(void);
 	int (*clear_mod_irqs)(s16 module, u8 regs, u32 wkst_mask);
+	u32 (*vp_check_txdone)(u8 vp_id);
+	void (*vp_clear_txdone)(u8 vp_id);
 };
 
 extern int prm_register(struct prm_ll_data *pld);
@@ -164,6 +166,18 @@ void omap_prm_reset_system(void);
 void omap_prm_reconfigure_io_chain(void);
 int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask);
 
+/*
+ * Voltage Processor (VP) identifiers
+ */
+#define OMAP3_VP_VDD_MPU_ID	0
+#define OMAP3_VP_VDD_CORE_ID	1
+#define OMAP4_VP_VDD_CORE_ID	0
+#define OMAP4_VP_VDD_IVA_ID	1
+#define OMAP4_VP_VDD_MPU_ID	2
+
+u32 omap_prm_vp_check_txdone(u8 vp_id);
+void omap_prm_vp_clear_txdone(u8 vp_id);
+
 #endif
 
 

arch/arm/mach-omap2/prm3xxx.c

@@ -96,7 +96,7 @@ static struct omap3_vp omap3_vp[] = {
 
 #define MAX_VP_ID ARRAY_SIZE(omap3_vp);
 
-u32 omap3_prm_vp_check_txdone(u8 vp_id)
+static u32 omap3_prm_vp_check_txdone(u8 vp_id)
 {
 	struct omap3_vp *vp = &omap3_vp[vp_id];
 	u32 irqstatus;
@@ -106,7 +106,7 @@ u32 omap3_prm_vp_check_txdone(u8 vp_id)
 	return irqstatus & vp->tranxdone_status;
 }
 
-void omap3_prm_vp_clear_txdone(u8 vp_id)
+static void omap3_prm_vp_clear_txdone(u8 vp_id)
 {
 	struct omap3_vp *vp = &omap3_vp[vp_id];
 
@@ -665,6 +665,8 @@ static struct prm_ll_data omap3xxx_prm_ll_data = {
 	.is_hardreset_asserted = &omap2_prm_is_hardreset_asserted,
 	.reset_system = &omap3xxx_prm_dpll3_reset,
 	.clear_mod_irqs = &omap3xxx_prm_clear_mod_irqs,
+	.vp_check_txdone = &omap3_prm_vp_check_txdone,
+	.vp_clear_txdone = &omap3_prm_vp_clear_txdone,
 };
 
 int __init omap3xxx_prm_init(void)

arch/arm/mach-omap2/prm3xxx.h

@@ -132,10 +132,6 @@
 
 #ifndef __ASSEMBLER__
 
-/* OMAP3-specific VP functions */
-u32 omap3_prm_vp_check_txdone(u8 vp_id);
-void omap3_prm_vp_clear_txdone(u8 vp_id);
-
 /*
  * OMAP3 access functions for voltage controller (VC) and
  * voltage proccessor (VP) in the PRM.

arch/arm/mach-omap2/prm44xx.c

@@ -138,7 +138,7 @@ static struct omap4_vp omap4_vp[] = {
 	},
 };
 
-u32 omap4_prm_vp_check_txdone(u8 vp_id)
+static u32 omap4_prm_vp_check_txdone(u8 vp_id)
 {
 	struct omap4_vp *vp = &omap4_vp[vp_id];
 	u32 irqstatus;
@@ -149,7 +149,7 @@ u32 omap4_prm_vp_check_txdone(u8 vp_id)
 	return irqstatus & vp->tranxdone_status;
 }
 
-void omap4_prm_vp_clear_txdone(u8 vp_id)
+static void omap4_prm_vp_clear_txdone(u8 vp_id)
 {
 	struct omap4_vp *vp = &omap4_vp[vp_id];
 
@@ -699,6 +699,8 @@ static struct prm_ll_data omap44xx_prm_ll_data = {
 	.deassert_hardreset	= omap4_prminst_deassert_hardreset,
 	.is_hardreset_asserted	= omap4_prminst_is_hardreset_asserted,
 	.reset_system		= omap4_prminst_global_warm_sw_reset,
+	.vp_check_txdone	= omap4_prm_vp_check_txdone,
+	.vp_clear_txdone	= omap4_prm_vp_clear_txdone,
 };
 
 int __init omap44xx_prm_init(void)

arch/arm/mach-omap2/prm44xx_54xx.h

@@ -26,10 +26,6 @@
 /* Function prototypes */
 #ifndef __ASSEMBLER__
 
-/* OMAP4/OMAP5-specific VP functions */
-u32 omap4_prm_vp_check_txdone(u8 vp_id);
-void omap4_prm_vp_clear_txdone(u8 vp_id);
-
 /*
  * OMAP4/OMAP5 access functions for voltage controller (VC) and
  * voltage proccessor (VP) in the PRM.

arch/arm/mach-omap2/prm_common.c

@@ -554,6 +554,40 @@ int omap_prm_clear_mod_irqs(s16 module, u8 regs, u32 wkst_mask)
 	return prm_ll_data->clear_mod_irqs(module, regs, wkst_mask);
 }
 
+/**
+ * omap_prm_vp_check_txdone - check voltage processor TX done status
+ *
+ * Checks if voltage processor transmission has been completed.
+ * Returns non-zero if a transmission has completed, 0 otherwise.
+ */
+u32 omap_prm_vp_check_txdone(u8 vp_id)
+{
+	if (!prm_ll_data->vp_check_txdone) {
+		WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+			  __func__);
+		return 0;
+	}
+
+	return prm_ll_data->vp_check_txdone(vp_id);
+}
+
+/**
+ * omap_prm_vp_clear_txdone - clears voltage processor TX done status
+ *
+ * Clears the status bit for completed voltage processor transmission
+ * returned by prm_vp_check_txdone.
+ */
+void omap_prm_vp_clear_txdone(u8 vp_id)
+{
+	if (!prm_ll_data->vp_clear_txdone) {
+		WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+			  __func__);
+		return;
+	}
+
+	prm_ll_data->vp_clear_txdone(vp_id);
+}
+
 /**
  * prm_register - register per-SoC low-level data with the PRM
  * @pld: low-level per-SoC OMAP PRM data & function pointers to register

arch/arm/mach-omap2/vp.h

@@ -21,15 +21,6 @@
 
 struct voltagedomain;
 
-/*
- * Voltage Processor (VP) identifiers
- */
-#define OMAP3_VP_VDD_MPU_ID 0
-#define OMAP3_VP_VDD_CORE_ID 1
-#define OMAP4_VP_VDD_CORE_ID 0
-#define OMAP4_VP_VDD_IVA_ID 1
-#define OMAP4_VP_VDD_MPU_ID 2
-
 /* XXX document */
 #define VP_IDLE_TIMEOUT		200
 #define VP_TRANXDONE_TIMEOUT	300

arch/arm/mach-omap2/vp3xxx_data.c

@@ -28,8 +28,8 @@
 #include "prm2xxx_3xxx.h"
 
 static const struct omap_vp_ops omap3_vp_ops = {
-	.check_txdone = omap3_prm_vp_check_txdone,
-	.clear_txdone = omap3_prm_vp_clear_txdone,
+	.check_txdone = omap_prm_vp_check_txdone,
+	.clear_txdone = omap_prm_vp_clear_txdone,
 };
 
 /*

arch/arm/mach-omap2/vp44xx_data.c

@@ -28,8 +28,8 @@
 #include "vp.h"
 
 static const struct omap_vp_ops omap4_vp_ops = {
-	.check_txdone = omap4_prm_vp_check_txdone,
-	.clear_txdone = omap4_prm_vp_clear_txdone,
+	.check_txdone = omap_prm_vp_check_txdone,
+	.clear_txdone = omap_prm_vp_clear_txdone,
 };
 
 /*