Commit 142b21fe authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Greg Kroah-Hartman
Browse files

greybus: camera: Configure the bridge CSI transmitter 



Start or stop the CSI transmitter when configuring and unconfiguring the
streams respectively. The CSI configuration parameters are currently
hardcoded.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@google.com>
parent 8e2b7daa

drivers/staging/greybus/camera.c

+23 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/uaccess.h>

#include <linux/vmalloc.h>



#include "es2.h"

#include "greybus.h"

#include "greybus_protocols.h"
@@ -79,6 +80,7 @@ static int gb_camera_configure_streams(struct gb_camera *gcam, 
{

	struct gb_camera_configure_streams_request *req;

	struct gb_camera_configure_streams_response *resp;

	struct es2_ap_csi_config csi_cfg;

	unsigned int i;

	size_t req_size;

	size_t resp_size;
@@ -146,6 +148,27 @@ static int gb_camera_configure_streams(struct gb_camera *gcam, 
		}

	}



	/* Configure the CSI transmitter. Hardcode the parameters for now. */

	if (nstreams && !(resp->flags & GB_CAMERA_CONFIGURE_STREAMS_ADJUSTED)) {

		csi_cfg.csi_id = 1;

		csi_cfg.clock_mode = 0;

		csi_cfg.num_lanes = 2;

		csi_cfg.bus_freq = 250000000;



		ret = es2_ap_csi_setup(gcam->connection->hd, true, &csi_cfg);

	} else if (nstreams == 0) {

		csi_cfg.csi_id = 1;

		csi_cfg.clock_mode = 0;

		csi_cfg.num_lanes = 0;

		csi_cfg.bus_freq = 0;



		ret = es2_ap_csi_setup(gcam->connection->hd, false, &csi_cfg);

	}



	if (ret < 0)

		gcam_err(gcam, "failed to %s the CSI transmitter\n",

			 nstreams ? "start" : "stop");



	ret = resp->num_streams;



done:

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