ARM: OMAP4+/AM33xx: CM: add common API for cm_wait_module_idle

Adds a generic CM driver API for waiting module to enter idle / standby.
The SoC specific implementations are registered through cm_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>

1 files changed, 5 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/cm.h b/arch/arm/mach-omap2/cm.h
index 695c34dd37ca..3ecc5d73e2c5 100644
--- a/arch/arm/mach-omap2/cm.h
+++ b/arch/arm/mach-omap2/cm.h
@@ -45,18 +45,23 @@ extern void omap2_set_globals_cm(void __iomem *cm, void __iomem *cm2);
  * struct cm_ll_data - fn ptrs to per-SoC CM function implementations
  * @split_idlest_reg: ptr to the SoC CM-specific split_idlest_reg impl
  * @wait_module_ready: ptr to the SoC CM-specific wait_module_ready impl
+ * @wait_module_idle: ptr to the SoC CM-specific wait_module_idle impl
  */
 struct cm_ll_data {
         int (*split_idlest_reg)(void __iomem *idlest_reg, s16 *prcm_inst,
                                 u8 *idlest_reg_id);
         int (*wait_module_ready)(u8 part, s16 prcm_mod, u16 idlest_reg,
                                  u8 idlest_shift);
+        int (*wait_module_idle)(u8 part, s16 prcm_mod, u16 idlest_reg,
+                                u8 idlest_shift);
 };
 
 extern int cm_split_idlest_reg(void __iomem *idlest_reg, s16 *prcm_inst,
                                u8 *idlest_reg_id);
 int omap_cm_wait_module_ready(u8 part, s16 prcm_mod, u16 idlest_reg,
                               u8 idlest_shift);
+int omap_cm_wait_module_idle(u8 part, s16 prcm_mod, u16 idlest_reg,
+                             u8 idlest_shift);
 extern int cm_register(struct cm_ll_data *cld);
 extern int cm_unregister(struct cm_ll_data *cld);