Commit 4cbd8479 authored by Luca Ceresoli's avatar Luca Ceresoli Committed by Hans Verkuil
Browse files

staging: media: tegra-video: add syncpts for Tegra20 to struct tegra_vi 



In preparation to implement Tegra20 parallel video capture, add a variable
to hold the required syncpt and document all the syncpt variables.

Signed-off-by: default avatarLuca Ceresoli <luca.ceresoli@bootlin.com>
Reviewed-by: default avatarDmitry Osipenko <digetx@gmail.com>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
parent 89a0f667

drivers/staging/media/tegra-video/vi.h

+5 −2
Original line number Diff line number Diff line
@@ -117,11 +117,13 @@ struct tegra_vi { 
 * @vi: Tegra video input device structure

 * @frame_start_sp: host1x syncpoint pointer to synchronize programmed capture

 *		start condition with hardware frame start events through host1x

 *		syncpoint counters.

 *		syncpoint counters. (Tegra210)

 * @mw_ack_sp: host1x syncpoint pointer to synchronize programmed memory write

 *		ack trigger condition with hardware memory write done at end of

 *		frame through host1x syncpoint counters.

 *		frame through host1x syncpoint counters (On Tegra20 used for the

 *              OUT_1 syncpt)

 * @sp_incr_lock: protects cpu syncpoint increment.

 * @next_out_sp_idx: next expected value for mw_ack_sp[0], i.e. OUT_1 (Tegra20)

 *

 * @kthread_start_capture: kthread to start capture of single frame when

 *		vb buffer is available. This thread programs VI CSI hardware
@@ -175,6 +177,7 @@ struct tegra_vi_channel { 
	struct host1x_syncpt *mw_ack_sp[GANG_PORTS_MAX];

	/* protects the cpu syncpoint increment */

	spinlock_t sp_incr_lock[GANG_PORTS_MAX];

	u32 next_out_sp_idx;



	struct task_struct *kthread_start_capture;

	wait_queue_head_t start_wait;