OMAP2+: add PRM VP functions for checking/clearing VP TX done status

Add SoC specific PRM VP helper functions for checking and clearing
the VP transaction done status.

Longer term, these events should be handled by the forthcoming PRCM
interrupt handler.

Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 21 insertions, 13 deletions

diff --git a/arch/arm/mach-omap2/vp.h b/arch/arm/mach-omap2/vp.h
index 025cf164da71..1ccf7419a36c 100644
--- a/arch/arm/mach-omap2/vp.h
+++ b/arch/arm/mach-omap2/vp.h
@@ -21,10 +21,28 @@
 
 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
 
+/**
+ * struct omap_vp_ops - per-VP operations
+ * @check_txdone: check for VP transaction done
+ * @clear_txdone: clear VP transaction done status
+ */
+struct omap_vp_ops {
+        u32 (*check_txdone)(u8 vp_id);
+        void (*clear_txdone)(u8 vp_id);
+};
 
 /**
  * struct omap_vp_common_data - register data common to all VDDs
@@ -68,41 +86,31 @@ struct omap_vp_common_data {
         u8 vlimitto_vddmin_shift;
         u8 vlimitto_vddmax_shift;
         u8 vlimitto_timeout_shift;
-};
 
-/**
- * struct omap_vp_prm_irqst_data - PRM_IRQSTATUS_MPU.VP_TRANXDONE_ST data
- * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg
- *
- * XXX Note that on OMAP3, VP_TRANXDONE interrupt may not work due to a
- *     hardware bug
- * XXX This structure is probably not needed
- */
-struct omap_vp_prm_irqst_data {
-        u32 tranxdone_status;
+        const struct omap_vp_ops *ops;
 };
 
 /**
  * struct omap_vp_instance_data - VP register offsets (per-VDD)
  * @vp_common: pointer to struct omap_vp_common_data * for this SoC
- * @prm_irqst_data: pointer to struct omap_vp_prm_irqst_data for this VDD
  * @vpconfig: PRM_VP*_CONFIG reg offset from PRM start
  * @vstepmin: PRM_VP*_VSTEPMIN reg offset from PRM start
  * @vlimitto: PRM_VP*_VLIMITTO reg offset from PRM start
  * @vstatus: PRM_VP*_VSTATUS reg offset from PRM start
  * @voltage: PRM_VP*_VOLTAGE reg offset from PRM start
+ * @id: Unique identifier for VP instance.
  *
  * XXX vp_common is probably not needed since it is per-SoC
  */
 struct omap_vp_instance_data {
         const struct omap_vp_common_data *vp_common;
-        const struct omap_vp_prm_irqst_data *prm_irqst_data;
         u8 vpconfig;
         u8 vstepmin;
         u8 vstepmax;
         u8 vlimitto;
         u8 vstatus;
         u8 voltage;
+        u8 id;
 };
 
 /**