diff options
| -rw-r--r-- | arch/arm/mach-omap2/vp.c | 58 |
1 files changed, 19 insertions, 39 deletions
diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c index 24020ea2b7e..66bd700a2b9 100644 --- a/arch/arm/mach-omap2/vp.c +++ b/arch/arm/mach-omap2/vp.c @@ -9,31 +9,18 @@ #include "prm-regbits-44xx.h" #include "prm44xx.h" -static void vp_latch_vsel(struct voltagedomain *voltdm) +static u32 _vp_set_init_voltage(struct voltagedomain *voltdm, u32 volt) { struct omap_vp_instance *vp = voltdm->vp; u32 vpconfig; - unsigned long uvdc; char vsel; - uvdc = omap_voltage_get_nom_volt(voltdm); - if (!uvdc) { - pr_warning("%s: unable to find current voltage for vdd_%s\n", - __func__, voltdm->name); - return; - } - - if (!voltdm->pmic || !voltdm->pmic->uv_to_vsel) { - pr_warning("%s: PMIC function to convert voltage in uV to" - " vsel not registered\n", __func__); - return; - } - - vsel = voltdm->pmic->uv_to_vsel(uvdc); + vsel = voltdm->pmic->uv_to_vsel(volt); vpconfig = voltdm->read(vp->vpconfig); vpconfig &= ~(vp->common->vpconfig_initvoltage_mask | - vp->common->vpconfig_initvdd); + vp->common->vpconfig_forceupdate | + vp->common->vpconfig_initvdd); vpconfig |= vsel << __ffs(vp->common->vpconfig_initvoltage_mask); voltdm->write(vpconfig, vp->vpconfig); @@ -43,6 +30,8 @@ static void vp_latch_vsel(struct voltagedomain *voltdm) /* Clear initVDD copy trigger bit */ voltdm->write(vpconfig, vp->vpconfig); + + return vpconfig; } /* Generic voltage init functions */ @@ -149,22 +138,11 @@ int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, return -ETIMEDOUT; } - /* Configure for VP-Force Update */ - vpconfig = voltdm->read(vp->vpconfig); - vpconfig &= ~(vp->common->vpconfig_initvdd | - vp->common->vpconfig_forceupdate | - vp->common->vpconfig_initvoltage_mask); - vpconfig |= ((target_vsel << - __ffs(vp->common->vpconfig_initvoltage_mask))); - voltdm->write(vpconfig, vp->vpconfig); - - /* Trigger initVDD value copy to voltage processor */ - vpconfig |= vp->common->vpconfig_initvdd; - voltdm->write(vpconfig, vp->vpconfig); + vpconfig = _vp_set_init_voltage(voltdm, target_volt); /* Force update of voltage */ - vpconfig |= vp->common->vpconfig_forceupdate; - voltdm->write(vpconfig, vp->vpconfig); + voltdm->write(vpconfig | vp->common->vpconfig_forceupdate, + voltdm->vp->vpconfig); /* * Wait for TransactionDone. Typical latency is <200us. @@ -197,12 +175,7 @@ int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, "to clear the TRANXDONE status\n", __func__, voltdm->name); - vpconfig = voltdm->read(vp->vpconfig); - /* Clear initVDD copy trigger bit */ - vpconfig &= ~vp->common->vpconfig_initvdd; - voltdm->write(vpconfig, vp->vpconfig); /* Clear force bit */ - vpconfig &= ~vp->common->vpconfig_forceupdate; voltdm->write(vpconfig, vp->vpconfig); return 0; @@ -218,7 +191,7 @@ int omap_vp_forceupdate_scale(struct voltagedomain *voltdm, void omap_vp_enable(struct voltagedomain *voltdm) { struct omap_vp_instance *vp; - u32 vpconfig; + u32 vpconfig, volt; if (!voltdm || IS_ERR(voltdm)) { pr_warning("%s: VDD specified does not exist!\n", __func__); @@ -236,12 +209,19 @@ void omap_vp_enable(struct voltagedomain *voltdm) if (vp->enabled) return; - vp_latch_vsel(voltdm); + volt = voltdm_get_voltage(voltdm); + if (!volt) { + pr_warning("%s: unable to find current voltage for %s\n", + __func__, voltdm->name); + return; + } + + vpconfig = _vp_set_init_voltage(voltdm, volt); /* Enable VP */ - vpconfig = voltdm->read(vp->vpconfig); vpconfig |= vp->common->vpconfig_vpenable; voltdm->write(vpconfig, vp->vpconfig); + vp->enabled = true; } |