Do not allow omap_hwmod_register to be used outside the core
hwmod code. An omap_hwmod should be register only at init time.
Remove the omap_hwmod_unregister that is not used today since the
hwmod list will be build once at init time and never be modified
at runtime.
Signed-off-by: Benoit Cousson <b-cous...@ti.com>
Cc: Paul Walmsley <p...@pwsan.com>
Cc: Kevin Hilman <khil...@deeprootsystems.com>
---
arch/arm/mach-omap2/omap_hwmod.c | 135 ++++++++++---------------
arch/arm/plat-omap/include/plat/omap_hwmod.h | 2 -
2 files changed, 54 insertions(+), 83 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 5a30658..9cedea0 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -1374,6 +1374,58 @@ static int _setup(struct omap_hwmod *oh, void *data)
return 0;
}
+/**
+ * _register - register a struct omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Registers the omap_hwmod @oh. Returns -EEXIST if an omap_hwmod
+ * already has been registered by the same name; -EINVAL if the
+ * omap_hwmod is in the wrong state, if @oh is NULL, if the
+ * omap_hwmod's class field is NULL; if the omap_hwmod is missing a
+ * name, or if the omap_hwmod's class is missing a name; or 0 upon
+ * success.
+ *
+ * XXX The data should be copied into bootmem, so the original data
+ * should be marked __initdata and freed after init. This would allow
+ * unneeded omap_hwmods to be freed on multi-OMAP configurations. Note
+ * that the copy process would be relatively complex due to the large number
+ * of substructures.
+ */
+static int _register(struct omap_hwmod *oh)
+{
+ int ret, ms_id;
+
+ if (!oh || !oh->name || !oh->class || !oh->class->name ||
+ (oh->_state != _HWMOD_STATE_UNKNOWN))
+ return -EINVAL;
+
+ mutex_lock(&omap_hwmod_mutex);
+
+ pr_debug("omap_hwmod: %s: registering\n", oh->name);
+
+ if (_lookup(oh->name)) {
+ ret = -EEXIST;
+ goto ohr_unlock;
+ }
+
+ ms_id = _find_mpu_port_index(oh);
+ if (!IS_ERR_VALUE(ms_id)) {
+ oh->_mpu_port_index = ms_id;
+ oh->_mpu_rt_va = _find_mpu_rt_base(oh, oh->_mpu_port_index);
+ } else {
+ oh->_int_flags |= _HWMOD_NO_MPU_PORT;
+ }
+
+ list_add_tail(&oh->node, &omap_hwmod_list);
+
+ oh->_state = _HWMOD_STATE_REGISTERED;
+
+ ret = 0;
+
+ohr_unlock:
+ mutex_unlock(&omap_hwmod_mutex);
+ return ret;
+}
/* Public functions */
@@ -1427,59 +1479,6 @@ int omap_hwmod_set_slave_idlemode(struct omap_hwmod *oh,
u8 idlemode)
}
/**
- * omap_hwmod_register - register a struct omap_hwmod
- * @oh: struct omap_hwmod *
- *
- * Registers the omap_hwmod @oh. Returns -EEXIST if an omap_hwmod
- * already has been registered by the same name; -EINVAL if the
- * omap_hwmod is in the wrong state, if @oh is NULL, if the
- * omap_hwmod's class field is NULL; if the omap_hwmod is missing a
- * name, or if the omap_hwmod's class is missing a name; or 0 upon
- * success.
- *
- * XXX The data should be copied into bootmem, so the original data
- * should be marked __initdata and freed after init. This would allow
- * unneeded omap_hwmods to be freed on multi-OMAP configurations. Note
- * that the copy process would be relatively complex due to the large number
- * of substructures.
- */
-int omap_hwmod_register(struct omap_hwmod *oh)
-{
- int ret, ms_id;
-
- if (!oh || !oh->name || !oh->class || !oh->class->name ||
- (oh->_state != _HWMOD_STATE_UNKNOWN))
- return -EINVAL;
-
- mutex_lock(&omap_hwmod_mutex);
-
- pr_debug("omap_hwmod: %s: registering\n", oh->name);
-
- if (_lookup(oh->name)) {
- ret = -EEXIST;
- goto ohr_unlock;
- }
-
- ms_id = _find_mpu_port_index(oh);
- if (!IS_ERR_VALUE(ms_id)) {
- oh->_mpu_port_index = ms_id;
- oh->_mpu_rt_va = _find_mpu_rt_base(oh, oh->_mpu_port_index);
- } else {
- oh->_int_flags |= _HWMOD_NO_MPU_PORT;
- }
-
- list_add_tail(&oh->node, &omap_hwmod_list);
-
- oh->_state = _HWMOD_STATE_REGISTERED;
-
- ret = 0;
-
-ohr_unlock:
- mutex_unlock(&omap_hwmod_mutex);
- return ret;
-}
-
-/**
* omap_hwmod_lookup - look up a registered omap_hwmod by name
* @name: name of the omap_hwmod to look up
*
@@ -1558,8 +1557,8 @@ int omap_hwmod_init(struct omap_hwmod **ohs)
oh = *ohs;
while (oh) {
if (omap_chip_is(oh->omap_chip)) {
- r = omap_hwmod_register(oh);
- WARN(r, "omap_hwmod: %s: omap_hwmod_register returned "
+ r = _register(oh);
+ WARN(r, "omap_hwmod: %s: _register returned "
"%d\n", oh->name, r);
}
oh = *++ohs;
@@ -1597,32 +1596,6 @@ int omap_hwmod_late_init(u8 skip_setup_idle)
}
/**
- * omap_hwmod_unregister - unregister an omap_hwmod
- * @oh: struct omap_hwmod *
- *
- * Unregisters a previously-registered omap_hwmod @oh. There's probably
- * no use case for this, so it is likely to be removed in a later version.
- *
- * XXX Free all of the bootmem-allocated structures here when that is
- * implemented. Make it clear that core code is the only code that is
- * expected to unregister modules.
- */
-int omap_hwmod_unregister(struct omap_hwmod *oh)
-{
- if (!oh)
- return -EINVAL;
-
- pr_debug("omap_hwmod: %s: unregistering\n", oh->name);
-
- mutex_lock(&omap_hwmod_mutex);
- iounmap(oh->_mpu_rt_va);
- list_del(&oh->node);
- mutex_unlock(&omap_hwmod_mutex);
-
- return 0;
-}
-
-/**
* omap_hwmod_enable - enable an omap_hwmod
* @oh: struct omap_hwmod *
*
diff --git a/arch/arm/plat-omap/include/plat/omap_hwmod.h
b/arch/arm/plat-omap/include/plat/omap_hwmod.h
index 7eaa8ed..51e86d7 100644
--- a/arch/arm/plat-omap/include/plat/omap_hwmod.h
+++ b/arch/arm/plat-omap/include/plat/omap_hwmod.h
@@ -504,8 +504,6 @@ struct omap_hwmod {
};
int omap_hwmod_init(struct omap_hwmod **ohs);
-int omap_hwmod_register(struct omap_hwmod *oh);
-int omap_hwmod_unregister(struct omap_hwmod *oh);
struct omap_hwmod *omap_hwmod_lookup(const char *name);
int omap_hwmod_for_each(int (*fn)(struct omap_hwmod *oh, void *data),
void *data);
--
1.7.0.4
--
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