int (*is_hardreset_asserted)(struct omap_hwmod *oh,
struct omap_hwmod_rst_info *ohri);
int (*init_clkdm)(struct omap_hwmod *oh);
+ void (*update_context_lost)(struct omap_hwmod *oh);
+ int (*get_context_lost)(struct omap_hwmod *oh);
};
/* soc_ops: adapts the omap_hwmod code to the currently-booted SoC */
spin_unlock_irqrestore(&io_chain_lock, flags);
}
+/**
+ * _omap4_update_context_lost - increment hwmod context loss counter if
+ * hwmod context was lost, and clear hardware context loss reg
+ * @oh: hwmod to check for context loss
+ *
+ * If the PRCM indicates that the hwmod @oh lost context, increment
+ * our in-memory context loss counter, and clear the RM_*_CONTEXT
+ * bits. No return value.
+ */
+static void _omap4_update_context_lost(struct omap_hwmod *oh)
+{
+ if (oh->prcm.omap4.flags & HWMOD_OMAP4_NO_CONTEXT_LOSS_BIT)
+ return;
+
+ if (!prm_was_any_context_lost_old(oh->clkdm->pwrdm.ptr->prcm_partition,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.context_offs))
+ return;
+
+ oh->prcm.omap4.context_lost_counter++;
+ prm_clear_context_loss_flags_old(oh->clkdm->pwrdm.ptr->prcm_partition,
+ oh->clkdm->pwrdm.ptr->prcm_offs,
+ oh->prcm.omap4.context_offs);
+}
+
+/**
+ * _omap4_get_context_lost - get context loss counter for a hwmod
+ * @oh: hwmod to get context loss counter for
+ *
+ * Returns the in-memory context loss counter for a hwmod.
+ */
+static int _omap4_get_context_lost(struct omap_hwmod *oh)
+{
+ return oh->prcm.omap4.context_lost_counter;
+}
+
/**
* _enable - enable an omap_hwmod
* @oh: struct omap_hwmod *
if (soc_ops.enable_module)
soc_ops.enable_module(oh);
+ if (soc_ops.update_context_lost)
+ soc_ops.update_context_lost(oh);
+
r = (soc_ops.wait_target_ready) ? soc_ops.wait_target_ready(oh) :
-EINVAL;
if (!r) {
* 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 associated @oh
+ * upon success, or zero if no context loss data is available.
*
- * Returns the context loss count of the powerdomain assocated with @oh
- * upon success, or zero if no powerdomain exists for @oh.
+ * On OMAP4, this queries the per-hwmod context loss register,
+ * assuming one exists. If not, or on OMAP2/3, this queries the
+ * enclosing powerdomain context loss count.
*/
int omap_hwmod_get_context_loss_count(struct omap_hwmod *oh)
{
struct powerdomain *pwrdm;
int ret = 0;
+ if (soc_ops.get_context_lost)
+ return soc_ops.get_context_lost(oh);
+
pwrdm = omap_hwmod_get_pwrdm(oh);
if (pwrdm)
ret = pwrdm_get_context_loss_count(pwrdm);
soc_ops.deassert_hardreset = _omap4_deassert_hardreset;
soc_ops.is_hardreset_asserted = _omap4_is_hardreset_asserted;
soc_ops.init_clkdm = _init_clkdm;
+ soc_ops.update_context_lost = _omap4_update_context_lost;
+ soc_ops.get_context_lost = _omap4_get_context_lost;
} else if (soc_is_am33xx()) {
soc_ops.enable_module = _am33xx_enable_module;
soc_ops.disable_module = _am33xx_disable_module;