[RESEND,v3,16/20] media: ti-vpe: cal: Add subdev s_power hooks
diff mbox series

Message ID 20191112145347.23519-17-bparrot@ti.com
State New
Headers show
Series
  • media: ti-vpe: cal: maintenance
Related show

Commit Message

Benoit Parrot Nov. 12, 2019, 2:53 p.m. UTC
Because V4L2 still uses a specific way to manage power state of devices
that predates runtime PM, bridge driver should power on and off sub
device explicitly.

Signed-off-by: Benoit Parrot <bparrot@ti.com>
---
 drivers/media/platform/ti-vpe/cal.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

Patch
diff mbox series

diff --git a/drivers/media/platform/ti-vpe/cal.c b/drivers/media/platform/ti-vpe/cal.c
index 58d2edc087fb..5b5ff32b6120 100644
--- a/drivers/media/platform/ti-vpe/cal.c
+++ b/drivers/media/platform/ti-vpe/cal.c
@@ -1654,6 +1654,12 @@  static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
 	if (ret < 0)
 		goto err;
 
+	ret = v4l2_subdev_call(ctx->sensor, core, s_power, 1);
+	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV) {
+		ctx_err(ctx, "power on failed in subdev\n");
+		goto err;
+	}
+
 	cal_runtime_get(ctx->dev);
 
 	csi2_ctx_config(ctx);
@@ -1667,6 +1673,7 @@  static int cal_start_streaming(struct vb2_queue *vq, unsigned int count)
 
 	ret = v4l2_subdev_call(ctx->sensor, video, s_stream, 1);
 	if (ret) {
+		v4l2_subdev_call(ctx->sensor, core, s_power, 0);
 		ctx_err(ctx, "stream on failed in subdev\n");
 		cal_runtime_put(ctx->dev);
 		goto err;
@@ -1695,6 +1702,7 @@  static void cal_stop_streaming(struct vb2_queue *vq)
 	struct cal_dmaqueue *dma_q = &ctx->vidq;
 	struct cal_buffer *buf, *tmp;
 	unsigned long flags;
+	int ret;
 
 	csi2_ppi_disable(ctx);
 	disable_irqs(ctx);
@@ -1703,6 +1711,10 @@  static void cal_stop_streaming(struct vb2_queue *vq)
 	if (v4l2_subdev_call(ctx->sensor, video, s_stream, 0))
 		ctx_err(ctx, "stream off failed in subdev\n");
 
+	ret = v4l2_subdev_call(ctx->sensor, core, s_power, 0);
+	if (ret < 0 && ret != -ENOIOCTLCMD && ret != -ENODEV)
+		ctx_err(ctx, "power off failed in subdev\n");
+
 	/* Release all active buffers */
 	spin_lock_irqsave(&ctx->slock, flags);
 	list_for_each_entry_safe(buf, tmp, &dma_q->active, list) {