ARM: OMAP2+: voltage: Remove some unused functions

Removes some functions that are not used anywhere:
omap_change_voltscale_method() voltdm_add_pwrdm()
voltdm_for_each() voltdm_for_each_pwrdm()

And remove define VOLTSCALE_VPFORCEUPDATE and VOLTSCALE_VCBYPASS

This was partially found by using a static code analysis program called cppcheck.

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Signed-off-by: Tony Lindgren <tony@atomide.com>

3 files changed, 0 insertions, 124 deletions

diff --git a/arch/arm/mach-omap2/powerdomain.c b/arch/arm/mach-omap2/powerdomain.c
index 6bd6025716ea..78af6d8cf2e2 100644
--- a/arch/arm/mach-omap2/powerdomain.c
+++ b/arch/arm/mach-omap2/powerdomain.c
@@ -115,7 +115,6 @@ static int _pwrdm_register(struct powerdomain *pwrdm)
         }
         pwrdm->voltdm.ptr = voltdm;
         INIT_LIST_HEAD(&pwrdm->voltdm_node);
-        voltdm_add_pwrdm(voltdm, pwrdm);
 skip_voltdm:
         spin_lock_init(&pwrdm->_lock);
 
diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c
index 3783b8625f0f..cba8cada8c81 100644
--- a/arch/arm/mach-omap2/voltage.c
+++ b/arch/arm/mach-omap2/voltage.c
@@ -224,37 +224,6 @@ int omap_voltage_register_pmic(struct voltagedomain *voltdm,
 }
 
 /**
- * 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
  *
  * This API is to be called in the later stages of the
@@ -316,90 +285,11 @@ static struct voltagedomain *_voltdm_lookup(const char *name)
         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);
diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-omap2/voltage.h
index f7f2879b31b0..e64550321510 100644
--- a/arch/arm/mach-omap2/voltage.h
+++ b/arch/arm/mach-omap2/voltage.h
@@ -23,10 +23,6 @@
 
 struct powerdomain;
 
-/* XXX document */
-#define VOLTSCALE_VPFORCEUPDATE         1
-#define VOLTSCALE_VCBYPASS              2
-
 /*
  * OMAP3 GENERIC setup times. Revisit to see if these needs to be
  * passed from board or PMIC file
@@ -55,7 +51,6 @@ struct omap_vfsm_instance {
  * @name: Name of the voltage domain which can be used as a unique identifier.
  * @scalable: Whether or not this voltage domain is scalable
  * @node: list_head linking all voltage domains
- * @pwrdm_list: list_head linking all powerdomains in this voltagedomain
  * @vc: pointer to VC channel associated with this voltagedomain
  * @vp: pointer to VP associated with this voltagedomain
  * @read: read a VC/VP register
@@ -71,7 +66,6 @@ struct voltagedomain {
         char *name;
         bool scalable;
         struct list_head node;
-        struct list_head pwrdm_list;
         struct omap_vc_channel *vc;
         const struct omap_vfsm_instance *vfsm;
         struct omap_vp_instance *vp;
@@ -163,8 +157,6 @@ struct omap_volt_data *omap_voltage_get_voltdata(struct voltagedomain *voltdm,
                 unsigned long volt);
 int omap_voltage_register_pmic(struct voltagedomain *voltdm,
                                struct omap_voltdm_pmic *pmic);
-void omap_change_voltscale_method(struct voltagedomain *voltdm,
-                int voltscale_method);
 int omap_voltage_late_init(void);
 
 extern void omap2xxx_voltagedomains_init(void);
@@ -175,11 +167,6 @@ extern void omap54xx_voltagedomains_init(void);
 struct voltagedomain *voltdm_lookup(const char *name);
 void voltdm_init(struct voltagedomain **voltdm_list);
 int voltdm_add_pwrdm(struct voltagedomain *voltdm, struct powerdomain *pwrdm);
-int voltdm_for_each(int (*fn)(struct voltagedomain *voltdm, void *user),
-                    void *user);
-int voltdm_for_each_pwrdm(struct voltagedomain *voltdm,
-                          int (*fn)(struct voltagedomain *voltdm,
-                                    struct powerdomain *pwrdm));
 int voltdm_scale(struct voltagedomain *voltdm, unsigned long target_volt);
 void voltdm_reset(struct voltagedomain *voltdm);
 unsigned long voltdm_get_voltage(struct voltagedomain *voltdm);