* - Open Core Protocol Specification 2.2
*
* To do:
- * - pin mux handling
* - handle IO mapping
* - bus throughput & module latency measurement code
*
#include "cm44xx.h"
#include "prm2xxx_3xxx.h"
#include "prm44xx.h"
+#include "mux.h"
/* Maximum microseconds to wait for OMAP module to softreset */
#define MAX_MODULE_SOFTRESET_WAIT 10000
/* omap_hwmod_list contains all registered struct omap_hwmods */
static LIST_HEAD(omap_hwmod_list);
-static DEFINE_MUTEX(omap_hwmod_mutex);
-
/* mpu_oh: used to add/remove MPU initiator from sleepdep list */
static struct omap_hwmod *mpu_oh;
u32 wakeup_mask;
if (!oh->class->sysc ||
- !(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ !((oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP) ||
+ (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)))
return -EINVAL;
if (!oh->class->sysc->sysc_fields) {
*v |= wakeup_mask;
+ if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)
+ _set_slave_idlemode(oh, HWMOD_IDLEMODE_SMART_WKUP, v);
+
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
oh->_int_flags |= _HWMOD_WAKEUP_ENABLED;
u32 wakeup_mask;
if (!oh->class->sysc ||
- !(oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP))
+ !((oh->class->sysc->sysc_flags & SYSC_HAS_ENAWAKEUP) ||
+ (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)))
return -EINVAL;
if (!oh->class->sysc->sysc_fields) {
*v &= ~wakeup_mask;
+ if (oh->class->sysc->idlemodes & SIDLE_SMART_WKUP)
+ _set_slave_idlemode(oh, HWMOD_IDLEMODE_SMART, v);
+
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
oh->_int_flags &= ~_HWMOD_WAKEUP_ENABLED;
_set_master_standbymode(oh, idlemode, &v);
}
+ /* If slave is in SMARTIDLE, also enable wakeup */
+ if ((sf & SYSC_HAS_SIDLEMODE) && !(oh->flags & HWMOD_SWSUP_SIDLE))
+ _enable_wakeup(oh, &v);
+
_write_sysconfig(v, oh);
}
* @name: find an omap_hwmod by name
*
* Return a pointer to an omap_hwmod by name, or NULL if not found.
- * Caller must hold omap_hwmod_mutex.
*/
static struct omap_hwmod *_lookup(const char *name)
{
oh->_state == _HWMOD_STATE_DISABLED) && oh->rst_lines_cnt == 1)
_deassert_hardreset(oh, oh->rst_lines[0].name);
- /* XXX mux balls */
+ /* Mux pins for device runtime if populated */
+ if (oh->mux)
+ omap_hwmod_mux(oh->mux, _HWMOD_STATE_ENABLED);
_add_initiator_dep(oh, mpu_oh);
_enable_clocks(oh);
_enable_sysc(oh);
}
} else {
+ _disable_clocks(oh);
pr_debug("omap_hwmod: %s: _wait_target_ready: %d\n",
oh->name, r);
}
_del_initiator_dep(oh, mpu_oh);
_disable_clocks(oh);
+ /* Mux pins for device idle if populated */
+ if (oh->mux)
+ omap_hwmod_mux(oh->mux, _HWMOD_STATE_IDLE);
+
oh->_state = _HWMOD_STATE_IDLE;
return 0;
}
/* XXX Should this code also force-disable the optional clocks? */
- /* XXX mux any associated balls to safe mode */
+ /* Mux pins to safe mode or use populated off mode values */
+ if (oh->mux)
+ omap_hwmod_mux(oh->mux, _HWMOD_STATE_DISABLED);
oh->_state = _HWMOD_STATE_DISABLED;
(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;
- }
+ if (_lookup(oh->name))
+ return -EEXIST;
ms_id = _find_mpu_port_index(oh);
if (!IS_ERR_VALUE(ms_id)) {
ret = 0;
-ohr_unlock:
- mutex_unlock(&omap_hwmod_mutex);
return ret;
}
if (!name)
return NULL;
- mutex_lock(&omap_hwmod_mutex);
oh = _lookup(name);
- mutex_unlock(&omap_hwmod_mutex);
return oh;
}
if (!fn)
return -EINVAL;
- mutex_lock(&omap_hwmod_mutex);
list_for_each_entry(temp_oh, &omap_hwmod_list, node) {
ret = (*fn)(temp_oh, data);
if (ret)
break;
}
- mutex_unlock(&omap_hwmod_mutex);
return ret;
}
* @fn: callback function pointer to call for each hwmod in class @classname
* @user: arbitrary context data to pass to the callback function
*
- * For each omap_hwmod of class @classname, call @fn. Takes
- * omap_hwmod_mutex to prevent the hwmod list from changing during the
- * iteration. If the callback function returns something other than
+ * For each omap_hwmod of class @classname, call @fn.
+ * If the callback function returns something other than
* zero, the iterator is terminated, and the callback function's return
* value is passed back to the caller. Returns 0 upon success, -EINVAL
* if @classname or @fn are NULL, or passes back the error code from @fn.
pr_debug("omap_hwmod: %s: looking for modules of class %s\n",
__func__, classname);
- mutex_lock(&omap_hwmod_mutex);
-
list_for_each_entry(temp_oh, &omap_hwmod_list, node) {
if (!strcmp(temp_oh->class->name, classname)) {
pr_debug("omap_hwmod: %s: %s: calling callback fn\n",
}
}
- mutex_unlock(&omap_hwmod_mutex);
-
if (ret)
pr_debug("omap_hwmod: %s: iterator terminated early: %d\n",
__func__, ret);
return ret;
}
+
+/**
+ * omap_hwmod_get_context_loss_count - get lost context count
+ * @oh: struct omap_hwmod *
+ *
+ * Query the powerdomain of of @oh to get the context loss
+ * count for this device.
+ *
+ * Returns the context loss count of the powerdomain assocated with @oh
+ * upon success, or zero if no powerdomain exists for @oh.
+ */
+u32 omap_hwmod_get_context_loss_count(struct omap_hwmod *oh)
+{
+ struct powerdomain *pwrdm;
+ int ret = 0;
+
+ pwrdm = omap_hwmod_get_pwrdm(oh);
+ if (pwrdm)
+ ret = pwrdm_get_context_loss_count(pwrdm);
+
+ return ret;
+}
git.openpandora.org / pandora-kernel.git / blobdiff