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Commit 918b0205 authored by Karthik Anantha Ram's avatar Karthik Anantha Ram
Browse files

msm: camera: Add flag to dynamically update axi ib bw 



While updating the axi vote check if that port supports
dynamic ib bw update.

Change-Id: I02f2695d90dbb25502f359ab09013fe7b9f0ced2
Signed-off-by: default avatarKarthik Anantha Ram <kartanan@codeaurora.org>
parent b048651c

Documentation/devicetree/bindings/media/video/msm-cam-cpas.txt

+5 −0
Original line number Diff line number Diff line
@@ -187,6 +187,11 @@ Third Level Node - CAM AXI Port properties 
  Value type: <string>

  Definition: Name of the AXI Port.



- ib-bw-voting-needed

  Usage: optional

  Value type: <bool>

  Definition: Determines if this port votes for ib bw dynamically.



===================================================================

Fourth Level Node - CAM AXI Bus properties

===================================================================

drivers/media/platform/msm/camera/cam_cpas/cam_cpas_hw.c

+13 −3
Original line number Diff line number Diff line
@@ -313,6 +313,9 @@ static int cam_cpas_util_axi_setup(struct cam_cpas *cpas_core, 
			goto mnoc_node_get_fail;

		}

		axi_port->axi_port_mnoc_node = axi_port_mnoc_node;

		axi_port->ib_bw_voting_needed =

			of_property_read_bool(axi_port_node,

				"ib-bw-voting-needed");



		rc = cam_cpas_util_register_bus_client(soc_info,

			axi_port_mnoc_node, &axi_port->mnoc_bus);
@@ -662,12 +665,19 @@ static int cam_cpas_util_apply_client_axi_vote( 
		axi_port->camnoc_bus.src, axi_port->camnoc_bus.dst,

		camnoc_bw, mnoc_bw);



	if (axi_port->ib_bw_voting_needed)

		rc = cam_cpas_util_vote_bus_client_bw(&axi_port->mnoc_bus,

			mnoc_bw, mnoc_bw, false);

	else

		rc = cam_cpas_util_vote_bus_client_bw(&axi_port->mnoc_bus,

			mnoc_bw, 0, false);



	if (rc) {

		CAM_ERR(CAM_CPAS,

			"Failed in mnoc vote ab[%llu] ib[%llu] rc=%d",

			mnoc_bw, mnoc_bw, rc);

			mnoc_bw,

			(axi_port->ib_bw_voting_needed ? mnoc_bw : 0),

			rc);

		goto unlock_axi_port;

	}

drivers/media/platform/msm/camera/cam_cpas/cam_cpas_hw.h

+2 −0
Original line number Diff line number Diff line
@@ -149,6 +149,7 @@ struct cam_cpas_bus_client { 
 * @camnoc_bus: CAMNOC bus client info for this port

 * @mnoc_bus: MNOC bus client info for this port

 * @axi_port_name: Name of this AXI port

 * @ib_bw_voting_needed: if this port can update ib bw dynamically

 * @axi_port_node: Node representing this AXI Port

 * @axi_port_mnoc_node: Node representing mnoc in this AXI Port

 * @axi_port_camnoc_node: Node representing camnoc in this AXI Port
@@ -161,6 +162,7 @@ struct cam_cpas_axi_port { 
	struct cam_cpas_bus_client camnoc_bus;

	struct cam_cpas_bus_client mnoc_bus;

	const char *axi_port_name;

	bool ib_bw_voting_needed;

	struct device_node *axi_port_node;

	struct device_node *axi_port_mnoc_node;

	struct device_node *axi_port_camnoc_node;