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, 49 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-omap2/prm44xx.c
index 00165558fc4d..390e32c53b0e 100644
--- a/arch/arm/mach-omap2/prm44xx.c
+++ b/arch/arm/mach-omap2/prm44xx.c
@@ -21,6 +21,7 @@
 #include <plat/cpu.h>
 #include <plat/prcm.h>
 
+#include "vp.h"
 #include "prm44xx.h"
 #include "prm-regbits-44xx.h"
 
@@ -50,3 +51,51 @@ u32 omap4_prm_rmw_inst_reg_bits(u32 mask, u32 bits, s16 inst, s16 reg)
 
         return v;
 }
+
+/* PRM VP */
+
+/*
+ * struct omap4_vp - OMAP4 VP register access description.
+ * @irqstatus_mpu: offset to IRQSTATUS_MPU register for VP
+ * @tranxdone_status: VP_TRANXDONE_ST bitmask in PRM_IRQSTATUS_MPU reg
+ */
+struct omap4_vp {
+        u32 irqstatus_mpu;
+        u32 tranxdone_status;
+};
+
+static struct omap4_vp omap4_vp[] = {
+        [OMAP4_VP_VDD_MPU_ID] = {
+                .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_2_OFFSET,
+                .tranxdone_status = OMAP4430_VP_MPU_TRANXDONE_ST_MASK,
+        },
+        [OMAP4_VP_VDD_IVA_ID] = {
+                .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_OFFSET,
+                .tranxdone_status = OMAP4430_VP_IVA_TRANXDONE_ST_MASK,
+        },
+        [OMAP4_VP_VDD_CORE_ID] = {
+                .irqstatus_mpu = OMAP4_PRM_IRQSTATUS_MPU_OFFSET,
+                .tranxdone_status = OMAP4430_VP_CORE_TRANXDONE_ST_MASK,
+        },
+};
+
+u32 omap4_prm_vp_check_txdone(u8 vp_id)
+{
+        struct omap4_vp *vp = &omap4_vp[vp_id];
+        u32 irqstatus;
+
+        irqstatus = omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION,
+                                                OMAP4430_PRM_OCP_SOCKET_INST,
+                                                vp->irqstatus_mpu);
+        return irqstatus & vp->tranxdone_status;
+}
+
+void omap4_prm_vp_clear_txdone(u8 vp_id)
+{
+        struct omap4_vp *vp = &omap4_vp[vp_id];
+
+        omap4_prminst_write_inst_reg(vp->tranxdone_status,
+                                     OMAP4430_PRM_PARTITION,
+                                     OMAP4430_PRM_OCP_SOCKET_INST,
+                                     vp->irqstatus_mpu);
+};