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greybus: camera: Configure the bridge CSI transmitter

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

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Laurent Pinchart 2015-12-18 21:23:25 +02:00 committed by Greg Kroah-Hartman
parent 8e2b7daa23
commit 142b21fee0
1 changed files with 23 additions and 0 deletions
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23
drivers/staging/greybus/camera.c
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@ -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: