OMAP2+: PRM: add register access functions for VC/VP

On OMAP3+, the voltage controller (VC) and voltage processor (VP) are
inside the PRM.  Add some PRM helper functions for register access to
these module registers.

Thanks to Nishanth Menon for finding/fixing a sparse problem.

Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-omap2/prm2xxx_3xxx.c
index 58c5c878b295..f02d87f68e54 100644
--- a/arch/arm/mach-omap2/prm2xxx_3xxx.c
+++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c
@@ -169,7 +169,7 @@ struct omap3_vp {
         u32 tranxdone_status;
 };
 
-struct omap3_vp omap3_vp[] = {
+static struct omap3_vp omap3_vp[] = {
         [OMAP3_VP_VDD_MPU_ID] = {
                 .tranxdone_status = OMAP3430_VP1_TRANXDONE_ST_MASK,
         },
@@ -197,3 +197,18 @@ void omap3_prm_vp_clear_txdone(u8 vp_id)
         omap2_prm_write_mod_reg(vp->tranxdone_status,
                                 OCP_MOD, OMAP3_PRM_IRQSTATUS_MPU_OFFSET);
 }
+
+u32 omap3_prm_vcvp_read(u8 offset)
+{
+        return omap2_prm_read_mod_reg(OMAP3430_GR_MOD, offset);
+}
+
+void omap3_prm_vcvp_write(u32 val, u8 offset)
+{
+        omap2_prm_write_mod_reg(val, OMAP3430_GR_MOD, offset);
+}
+
+u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset)
+{
+        return omap2_prm_rmw_mod_reg_bits(mask, bits, OMAP3430_GR_MOD, offset);
+}