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media: uvcvideo: set system status to performance when stream on

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For rockchip platforms, set performance frequency for the
memory controller when uvc stream on, and clear it after
uvc stream off. It can improve uvc streaming stability.

Signed-off-by: William Wu <william.wu@rock-chips.com>
Change-Id: I1dc0cf10c552bba2c3a0f8a1bb37d90f546eb4a3
This commit is contained in:
William Wu
2023-11-08 09:49:48 +08:00
committed by Wu Liang feng
parent 87f2ffb98e
commit ab0546fdd0
1 changed files with 6 additions and 0 deletions
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drivers/media/usb/uvc/uvc_video.c
+6
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@@ -20,6 +20,8 @@
#include <media/v4l2-common.h>
#include "uvcvideo.h"
#include <dt-bindings/soc/rockchip-system-status.h>
#include <soc/rockchip/rockchip-system-status.h>
/* ------------------------------------------------------------------------
* UVC Controls
@@ -2139,6 +2141,8 @@ int uvc_video_start_streaming(struct uvc_streaming *stream)
if (ret < 0)
goto error_commit;
rockchip_set_system_status(SYS_STATUS_PERFORMANCE);
ret = uvc_video_start_transfer(stream, GFP_KERNEL);
if (ret < 0)
goto error_video;
@@ -2146,6 +2150,7 @@ int uvc_video_start_streaming(struct uvc_streaming *stream)
return 0;
error_video:
rockchip_clear_system_status(SYS_STATUS_PERFORMANCE);
usb_set_interface(stream->dev->udev, stream->intfnum, 0);
error_commit:
uvc_video_clock_cleanup(stream);
@@ -2176,4 +2181,5 @@ void uvc_video_stop_streaming(struct uvc_streaming *stream)
}
uvc_video_clock_cleanup(stream);
rockchip_clear_system_status(SYS_STATUS_PERFORMANCE);
}