remoteproc: tisci_proc: Add helper api for controlling core power domain

Power domain for the remote cores needs to be handled in a right
sequence as mandated by the spec. Introduce tisci helper apis
that can control power-domains of remote cores. TISCI clients
can use this api and control the remote cores power domain instead
of hooking it to power-domain layer.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

diff --git a/drivers/remoteproc/ti_sci_proc.h b/drivers/remoteproc/ti_sci_proc.h
index ccfc39ec887ab4aa3303fe6105288f60a7797ee3..f8299d1aff92f2c297ddee19b49d2919e2f5adf6 100644 (file)
--- a/drivers/remoteproc/ti_sci_proc.h
+++ b/drivers/remoteproc/ti_sci_proc.h
@@ -19,12 +19,14 @@
  * @proc_id: processor id for the consumer remoteproc device
  * @host_id: host id to pass the control over for this consumer remoteproc
  *          device
+ * @dev_id: Device ID as identified by system controller.
  */
 struct ti_sci_proc {
        const struct ti_sci_handle *sci;
        const struct ti_sci_proc_ops *ops;
        u8 proc_id;
        u8 host_id;
+       u16 dev_id;
 };
 
 static inline int ti_sci_proc_request(struct ti_sci_proc *tsp)
@@ -118,4 +120,29 @@ static inline int ti_sci_proc_set_control(struct ti_sci_proc *tsp,
        return ret;
 }
 
+static inline int ti_sci_proc_power_domain_on(struct ti_sci_proc *tsp)
+{
+       int ret;
+
+       debug("%s: dev_id = %d\n", __func__, tsp->dev_id);
+
+       ret = tsp->sci->ops.dev_ops.get_device_exclusive(tsp->sci, tsp->dev_id);
+       if (ret)
+               pr_err("Power-domain on failed for dev = %d\n", tsp->dev_id);
+
+       return ret;
+}
+
+static inline int ti_sci_proc_power_domain_off(struct ti_sci_proc *tsp)
+{
+       int ret;
+
+       debug("%s: dev_id = %d\n", __func__, tsp->dev_id);
+
+       ret = tsp->sci->ops.dev_ops.put_device(tsp->sci, tsp->dev_id);
+       if (ret)
+               pr_err("Power-domain off failed for dev = %d\n", tsp->dev_id);
+
+       return ret;
+}
 #endif /* REMOTEPROC_TI_SCI_PROC_H */