ARM: OMAP2+: PRM: add generic API for deasserting hardware reset
PRM driver now has a generic API for deasserting hardware resets. SoC
specific support functions are registered through the prm_ll_data.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Acked-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap2/prm_common.c b/arch/arm/mach-omap2/prm_common.c
index 4f8c220..912d99c 100644
--- a/arch/arm/mach-omap2/prm_common.c
+++ b/arch/arm/mach-omap2/prm_common.c
@@ -443,6 +443,30 @@
}
/**
+ * omap_prm_deassert_hardreset - deassert hardreset for an IP block
+ * @shift: register bit shift corresponding to the reset line
+ * @st_shift: reset status bit shift corresponding to the reset line
+ * @part: PRM partition
+ * @prm_mod: PRM submodule base or instance offset
+ * @offset: register offset
+ * @st_offset: status register offset
+ *
+ * Deasserts a hardware reset line for an IP block.
+ */
+int omap_prm_deassert_hardreset(u8 shift, u8 st_shift, u8 part, s16 prm_mod,
+ u16 offset, u16 st_offset)
+{
+ if (!prm_ll_data->deassert_hardreset) {
+ WARN_ONCE(1, "prm: %s: no mapping function defined\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ return prm_ll_data->deassert_hardreset(shift, st_shift, part, prm_mod,
+ offset, st_offset);
+}
+
+/**
* prm_register - register per-SoC low-level data with the PRM
* @pld: low-level per-SoC OMAP PRM data & function pointers to register
*