commit 8a568b2013761ce8e2cbf3a341492e605007bb9e
author Alexandre Bailon <abailon@baylibre.com> Fri Aug 28 16:39:47 2020 +0200
committer Alex Van Damme <atv@google.com> Wed Sep 09 12:07:41 2020 -0700
tree ddab29041c80814688efba928600a3e74f585243
parent d6382ce64199091550d2bbdfb9488b2e53b33c5e

csi: instruct the camera to start or stop

This updates the driver to start the camera when the device
is opened and to stop it when the device is closed.

Signed-off-by: Alexandre Bailon <abailon@baylibre.com>

drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c

diff --git a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
index eb895406..4c0bec6 100644
--- a/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
+++ b/drivers/media/platform/mtk-mipicsi/mtk_mipicsi.c
@@ -571,9 +571,11 @@
 static int mtk_mipicsi_pm_suspend(struct device *dev)
 {
 	struct mtk_mipicsi_dev *mipicsi = dev_get_drvdata(dev);
+	struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev;
 	int ret = 0;
 
 	mipicsi_clk_enable(mipicsi, false);
+	v4l2_subdev_call(sd, video, s_stream, 0);
 
 	if (mipicsi->larb_pdev != NULL)
 		mtk_smi_larb_put(mipicsi->larb_pdev);
@@ -592,6 +594,7 @@
 static int mtk_mipicsi_pm_resume(struct device *dev)
 {
 	struct mtk_mipicsi_dev *mipicsi = dev_get_drvdata(dev);
+	struct v4l2_subdev *sd = mipicsi->mipicsi_sd.subdev;
 	int ret = 0;
 
 	if (mipicsi->larb_pdev != NULL) {
@@ -604,8 +607,8 @@
 	}
 
 	mipicsi_clk_enable(mipicsi, true);
-
 	mtk_mipicsi_reg_init(mipicsi);
+	v4l2_subdev_call(sd, video, s_stream, 1);
 
 	return ret;
 }