OMAP2+: hwmod: Init clkdm field at boot time
At boot time, lookup the clkdm_name to get the clkdm
structure pointer for further usage.
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
diff --git a/arch/arm/mach-omap2/omap_hwmod.c b/arch/arm/mach-omap2/omap_hwmod.c
index 02b6016..1f6f47f 100644
--- a/arch/arm/mach-omap2/omap_hwmod.c
+++ b/arch/arm/mach-omap2/omap_hwmod.c
@@ -990,9 +990,40 @@
return oh;
}
+/**
+ * _init_clkdm - look up a clockdomain name, store pointer in omap_hwmod
+ * @oh: struct omap_hwmod *
+ *
+ * Convert a clockdomain name stored in a struct omap_hwmod into a
+ * clockdomain pointer, and save it into the struct omap_hwmod.
+ * return -EINVAL if clkdm_name does not exist or if the lookup failed.
+ */
+static int _init_clkdm(struct omap_hwmod *oh)
+{
+ if (cpu_is_omap24xx() || cpu_is_omap34xx())
+ return 0;
+
+ if (!oh->clkdm_name) {
+ pr_warning("omap_hwmod: %s: no clkdm_name\n", oh->name);
+ return -EINVAL;
+ }
+
+ oh->clkdm = clkdm_lookup(oh->clkdm_name);
+ if (!oh->clkdm) {
+ pr_warning("omap_hwmod: %s: could not associate to clkdm %s\n",
+ oh->name, oh->clkdm_name);
+ return -EINVAL;
+ }
+
+ pr_debug("omap_hwmod: %s: associated to clkdm %s\n",
+ oh->name, oh->clkdm_name);
+
+ return 0;
+}
/**
- * _init_clocks - clk_get() all clocks associated with this hwmod
+ * _init_clocks - clk_get() all clocks associated with this hwmod. Retrieve as
+ * well the clockdomain.
* @oh: struct omap_hwmod *
* @data: not used; pass NULL
*
@@ -1012,6 +1043,7 @@
ret |= _init_main_clk(oh);
ret |= _init_interface_clks(oh);
ret |= _init_opt_clks(oh);
+ ret |= _init_clkdm(oh);
if (!ret)
oh->_state = _HWMOD_STATE_CLKS_INITED;