#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/bootmem.h>
+#include <linux/of.h>
+#include <linux/of_address.h>
#include <asm/system_misc.h>
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
- oh->_int_flags |= _HWMOD_WAKEUP_ENABLED;
-
return 0;
}
/* XXX test pwrdm_get_wken for this hwmod's subsystem */
- oh->_int_flags &= ~_HWMOD_WAKEUP_ENABLED;
-
return 0;
}
return oh->prcm.omap4.context_lost_counter;
}
+/**
+ * _enable_preprogram - Pre-program an IP block during the _enable() process
+ * @oh: struct omap_hwmod *
+ *
+ * Some IP blocks (such as AESS) require some additional programming
+ * after enable before they can enter idle. If a function pointer to
+ * do so is present in the hwmod data, then call it and pass along the
+ * return value; otherwise, return 0.
+ */
+static int __init _enable_preprogram(struct omap_hwmod *oh)
+{
+ if (!oh->class->enable_preprogram)
+ return 0;
+
+ return oh->class->enable_preprogram(oh);
+}
+
/**
* _enable - enable an omap_hwmod
* @oh: struct omap_hwmod *
_update_sysc_cache(oh);
_enable_sysc(oh);
}
+ r = _enable_preprogram(oh);
} else {
if (soc_ops.disable_module)
soc_ops.disable_module(oh);
return 0;
}
+/**
+ * of_dev_hwmod_lookup - look up needed hwmod from dt blob
+ * @np: struct device_node *
+ * @oh: struct omap_hwmod *
+ *
+ * Parse the dt blob and find out needed hwmod. Recursive function is
+ * implemented to take care hierarchical dt blob parsing.
+ * Return: The device node on success or NULL on failure.
+ */
+static struct device_node *of_dev_hwmod_lookup(struct device_node *np,
+ struct omap_hwmod *oh)
+{
+ struct device_node *np0 = NULL, *np1 = NULL;
+ const char *p;
+
+ for_each_child_of_node(np, np0) {
+ if (of_find_property(np0, "ti,hwmods", NULL)) {
+ p = of_get_property(np0, "ti,hwmods", NULL);
+ if (!strcmp(p, oh->name))
+ return np0;
+ np1 = of_dev_hwmod_lookup(np0, oh);
+ if (np1)
+ return np1;
+ }
+ }
+ return NULL;
+}
+
/**
* _init_mpu_rt_base - populate the virtual address for a hwmod
* @oh: struct omap_hwmod * to locate the virtual address
static void __init _init_mpu_rt_base(struct omap_hwmod *oh, void *data)
{
struct omap_hwmod_addr_space *mem;
- void __iomem *va_start;
+ void __iomem *va_start = NULL;
+ struct device_node *np;
if (!oh)
return;
if (!mem) {
pr_debug("omap_hwmod: %s: no MPU register target found\n",
oh->name);
- return;
+
+ /* Extract the IO space from device tree blob */
+ if (!of_have_populated_dt())
+ return;
+
+ np = of_dev_hwmod_lookup(of_find_node_by_name(NULL, "ocp"), oh);
+ if (np)
+ va_start = of_iomap(np, 0);
+ } else {
+ va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);
}
- va_start = ioremap(mem->pa_start, mem->pa_end - mem->pa_start);
if (!va_start) {
pr_err("omap_hwmod: %s: Could not ioremap\n", oh->name);
return;
static int _am33xx_deassert_hardreset(struct omap_hwmod *oh,
struct omap_hwmod_rst_info *ohri)
{
- if (ohri->st_shift)
- pr_err("omap_hwmod: %s: %s: hwmod data error: OMAP4 does not support st_shift\n",
- oh->name, ohri->name);
-
return am33xx_prm_deassert_hardreset(ohri->rst_shift,
+ ohri->st_shift,
oh->clkdm->pwrdm.ptr->prcm_offs,
oh->prcm.omap4.rstctrl_offs,
oh->prcm.omap4.rstst_offs);