return 0;
}
-/**
- * omap_change_voltscale_method() - API to change the voltage scaling method.
- * @voltdm: pointer to the VDD whose voltage scaling method
- * has to be changed.
- * @voltscale_method: the method to be used for voltage scaling.
- *
- * This API can be used by the board files to change the method of voltage
- * scaling between vpforceupdate and vcbypass. The parameter values are
- * defined in voltage.h
- */
-void omap_change_voltscale_method(struct voltagedomain *voltdm,
- int voltscale_method)
-{
- if (!voltdm || IS_ERR(voltdm)) {
- pr_warn("%s: VDD specified does not exist!\n", __func__);
- return;
- }
-
- switch (voltscale_method) {
- case VOLTSCALE_VPFORCEUPDATE:
- voltdm->scale = omap_vp_forceupdate_scale;
- return;
- case VOLTSCALE_VCBYPASS:
- voltdm->scale = omap_vc_bypass_scale;
- return;
- default:
- pr_warn("%s: Trying to change the method of voltage scaling to an unsupported one!\n",
- __func__);
- }
-}
-
/**
* omap_voltage_late_init() - Init the various voltage parameters
*
return voltdm;
}
-/**
- * voltdm_add_pwrdm - add a powerdomain to a voltagedomain
- * @voltdm: struct voltagedomain * to add the powerdomain to
- * @pwrdm: struct powerdomain * to associate with a voltagedomain
- *
- * Associate the powerdomain @pwrdm with a voltagedomain @voltdm. This
- * enables the use of voltdm_for_each_pwrdm(). Returns -EINVAL if
- * presented with invalid pointers; -ENOMEM if memory could not be allocated;
- * or 0 upon success.
- */
-int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm)
-{
- if (!voltdm || !pwrdm)
- return -EINVAL;
-
- pr_debug("voltagedomain: %s: associating powerdomain %s\n",
- voltdm->name, pwrdm->name);
-
- list_add(&pwrdm->voltdm_node, &voltdm->pwrdm_list);
-
- return 0;
-}
-
-/**
- * voltdm_for_each_pwrdm - call function for each pwrdm in a voltdm
- * @voltdm: struct voltagedomain * to iterate over
- * @fn: callback function *
- *
- * Call the supplied function @fn for each powerdomain in the
- * voltagedomain @voltdm. Returns -EINVAL if presented with invalid
- * pointers; or passes along the last return value of the callback
- * function, which should be 0 for success or anything else to
- * indicate failure.
- */
-int voltdm_for_each_pwrdm(struct voltagedomain *voltdm,
- int (*fn)(struct voltagedomain *voltdm,
- struct powerdomain *pwrdm))
-{
- struct powerdomain *pwrdm;
- int ret = 0;
-
- if (!fn)
- return -EINVAL;
-
- list_for_each_entry(pwrdm, &voltdm->pwrdm_list, voltdm_node)
- ret = (*fn)(voltdm, pwrdm);
-
- return ret;
-}
-
-/**
- * voltdm_for_each - call function on each registered voltagedomain
- * @fn: callback function *
- *
- * Call the supplied function @fn for each registered voltagedomain.
- * The callback function @fn can return anything but 0 to bail out
- * early from the iterator. Returns the last return value of the
- * callback function, which should be 0 for success or anything else
- * to indicate failure; or -EINVAL if the function pointer is null.
- */
-int voltdm_for_each(int (*fn)(struct voltagedomain *voltdm, void *user),
- void *user)
-{
- struct voltagedomain *temp_voltdm;
- int ret = 0;
-
- if (!fn)
- return -EINVAL;
-
- list_for_each_entry(temp_voltdm, &voltdm_list, node) {
- ret = (*fn)(temp_voltdm, user);
- if (ret)
- break;
- }
-
- return ret;
-}
-
static int _voltdm_register(struct voltagedomain *voltdm)
{
if (!voltdm || !voltdm->name)
return -EINVAL;
- INIT_LIST_HEAD(&voltdm->pwrdm_list);
list_add(&voltdm->node, &voltdm_list);
pr_debug("voltagedomain: registered %s\n", voltdm->name);