OMAP: VP: Explicitly mask VPVOLTAGE field

Reading the VPVOLTAGE field of PRM_VP_*_VOLTAGE registers currently
relies on a u32 -> u8 conversion to mask off the FORCEUPDATEWAIT field
in the upper bits.  Make this explicit using the mask symbol
already defined, added as a new field in struct omap_vp_common.

Signed-off-by: Todd Poynor <toddpoynor@google.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>

4 files changed, 7 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c
index e7d38f67db87..38076205312e 100644
--- a/arch/arm/mach-omap2/vp.c
+++ b/arch/arm/mach-omap2/vp.c
@@ -227,7 +227,8 @@ unsigned long omap_vp_get_curr_volt(struct voltagedomain *voltdm)
                 return 0;
         }
 
-        curr_vsel = voltdm->read(vp->voltage);
+        curr_vsel = (voltdm->read(vp->voltage) & vp->common->vpvoltage_mask)
+                >> __ffs(vp->common->vpvoltage_mask);
 
         if (!voltdm->pmic || !voltdm->pmic->vsel_to_uv) {
                 pr_warning("%s: PMIC function to convert vsel to voltage"
diff --git a/arch/arm/mach-omap2/vp.h b/arch/arm/mach-omap2/vp.h
index 96bbb23d2de2..7dc5cb3cd60c 100644
--- a/arch/arm/mach-omap2/vp.h
+++ b/arch/arm/mach-omap2/vp.h
@@ -63,6 +63,7 @@ struct omap_vp_ops {
  * @vlimitto_vddmin_shift: VDDMIN field shift in PRM_VP*_VLIMITTO reg
  * @vlimitto_vddmax_shift: VDDMAX field shift in PRM_VP*_VLIMITTO reg
  * @vlimitto_timeout_shift: TIMEOUT field shift in PRM_VP*_VLIMITTO reg
+ * @vpvoltage_mask: VPVOLTAGE field mask in PRM_VP*_VOLTAGE reg
  */
 struct omap_vp_common {
         u32 vpconfig_erroroffset_mask;
@@ -79,6 +80,7 @@ struct omap_vp_common {
         u8 vlimitto_vddmin_shift;
         u8 vlimitto_vddmax_shift;
         u8 vlimitto_timeout_shift;
+        u8 vpvoltage_mask;
 
         const struct omap_vp_ops *ops;
 };
diff --git a/arch/arm/mach-omap2/vp3xxx_data.c b/arch/arm/mach-omap2/vp3xxx_data.c
index d429c447eef0..260c554b1547 100644
--- a/arch/arm/mach-omap2/vp3xxx_data.c
+++ b/arch/arm/mach-omap2/vp3xxx_data.c
@@ -51,6 +51,8 @@ static const struct omap_vp_common omap3_vp_common = {
         .vlimitto_vddmin_shift = OMAP3430_VDDMIN_SHIFT,
         .vlimitto_vddmax_shift = OMAP3430_VDDMAX_SHIFT,
         .vlimitto_timeout_shift = OMAP3430_TIMEOUT_SHIFT,
+        .vpvoltage_mask = OMAP3430_VPVOLTAGE_MASK,
+
         .ops = &omap3_vp_ops,
 };
 
diff --git a/arch/arm/mach-omap2/vp44xx_data.c b/arch/arm/mach-omap2/vp44xx_data.c
index 0daf2a47dc28..b4e77044891e 100644
--- a/arch/arm/mach-omap2/vp44xx_data.c
+++ b/arch/arm/mach-omap2/vp44xx_data.c
@@ -51,6 +51,7 @@ static const struct omap_vp_common omap4_vp_common = {
         .vlimitto_vddmin_shift = OMAP4430_VDDMIN_SHIFT,
         .vlimitto_vddmax_shift = OMAP4430_VDDMAX_SHIFT,
         .vlimitto_timeout_shift = OMAP4430_TIMEOUT_SHIFT,
+        .vpvoltage_mask = OMAP4430_VPVOLTAGE_MASK,
         .ops = &omap4_vp_ops,
 };