From 6a709749228c5f76f128c69c16f39a52d639bd96 Mon Sep 17 00:00:00 2001
From: Jean-Francois Moine <moinejf@free.fr>
Date: Wed, 3 Sep 2008 16:48:10 -0300
Subject: [PATCH] V4L/DVB (8718): gspca: suspend/resume added.

Signed-off-by: Jean-Francois Moine <moinejf@free.fr>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---
 drivers/media/video/gspca/conex.c   |  4 ++++
 drivers/media/video/gspca/etoms.c   |  4 ++++
 drivers/media/video/gspca/gspca.c   | 30 ++++++++++++++++++++++++++++-
 drivers/media/video/gspca/gspca.h   |  7 +++++++
 drivers/media/video/gspca/mars.c    |  4 ++++
 drivers/media/video/gspca/ov519.c   |  4 ++++
 drivers/media/video/gspca/pac207.c  |  4 ++++
 drivers/media/video/gspca/pac7311.c |  4 ++++
 drivers/media/video/gspca/sonixb.c  |  4 ++++
 drivers/media/video/gspca/sonixj.c  |  4 ++++
 drivers/media/video/gspca/spca500.c |  4 ++++
 drivers/media/video/gspca/spca501.c |  4 ++++
 drivers/media/video/gspca/spca505.c |  4 ++++
 drivers/media/video/gspca/spca506.c |  4 ++++
 drivers/media/video/gspca/spca508.c |  4 ++++
 drivers/media/video/gspca/spca561.c |  4 ++++
 drivers/media/video/gspca/stk014.c  |  4 ++++
 drivers/media/video/gspca/sunplus.c |  4 ++++
 drivers/media/video/gspca/t613.c    |  4 ++++
 drivers/media/video/gspca/tv8532.c  |  4 ++++
 drivers/media/video/gspca/vc032x.c  |  4 ++++
 drivers/media/video/gspca/zc3xx.c   |  4 ++++
 22 files changed, 116 insertions(+), 1 deletion(-)

diff --git a/drivers/media/video/gspca/conex.c b/drivers/media/video/gspca/conex.c
index cd3a3f5829b2..739ef557c434 100644
--- a/drivers/media/video/gspca/conex.c
+++ b/drivers/media/video/gspca/conex.c
@@ -1026,6 +1026,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/etoms.c b/drivers/media/video/gspca/etoms.c
index ca23c3f9aaa2..a3cccab7b814 100644
--- a/drivers/media/video/gspca/etoms.c
+++ b/drivers/media/video/gspca/etoms.c
@@ -926,6 +926,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c
index 15d302b28b79..2f7bf263255c 100644
--- a/drivers/media/video/gspca/gspca.c
+++ b/drivers/media/video/gspca/gspca.c
@@ -114,7 +114,8 @@ static void fill_frame(struct gspca_dev *gspca_dev,
 	cam_pkt_op pkt_scan;
 
 	if (urb->status != 0) {
-		PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
+		if (!gspca_dev->frozen)
+			PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status);
 		return;		/* disconnection ? */
 	}
 	pkt_scan = gspca_dev->sd_desc->pkt_scan;
@@ -1808,6 +1809,33 @@ void gspca_disconnect(struct usb_interface *intf)
 }
 EXPORT_SYMBOL(gspca_disconnect);
 
+#ifdef CONFIG_PM
+int gspca_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
+
+	if (!gspca_dev->streaming)
+		return 0;
+	gspca_dev->frozen = 1;		/* avoid urb error messages */
+	gspca_dev->sd_desc->stopN(gspca_dev);
+	destroy_urbs(gspca_dev);
+	gspca_set_alt0(gspca_dev);
+	gspca_dev->sd_desc->stop0(gspca_dev);
+	return 0;
+}
+EXPORT_SYMBOL(gspca_suspend);
+
+int gspca_resume(struct usb_interface *intf)
+{
+	struct gspca_dev *gspca_dev = usb_get_intfdata(intf);
+
+	gspca_dev->frozen = 0;
+	if (!gspca_dev->streaming)
+		return 0;
+	return gspca_init_transfer(gspca_dev);
+}
+EXPORT_SYMBOL(gspca_resume);
+#endif
 /* -- cam driver utility functions -- */
 
 /* auto gain and exposure algorithm based on the knee algorithm described here:
diff --git a/drivers/media/video/gspca/gspca.h b/drivers/media/video/gspca/gspca.h
index 5cb584546ee6..2596568e82fd 100644
--- a/drivers/media/video/gspca/gspca.h
+++ b/drivers/media/video/gspca/gspca.h
@@ -154,6 +154,9 @@ struct gspca_dev {
 	struct mutex queue_lock;	/* ISOC queue protection */
 	__u32 sequence;			/* frame sequence number */
 	char streaming;
+#ifdef CONFIG_PM
+	char frozen;			/* suspend - resume */
+#endif
 	char users;			/* number of opens */
 	char present;			/* device connected */
 	char nbufread;			/* number of buffers for read() */
@@ -173,6 +176,10 @@ struct gspca_frame *gspca_frame_add(struct gspca_dev *gspca_dev,
 				    struct gspca_frame *frame,
 				    const __u8 *data,
 				    int len);
+#ifdef CONFIG_PM
+int gspca_suspend(struct usb_interface *intf, pm_message_t message);
+int gspca_resume(struct usb_interface *intf);
+#endif
 int gspca_auto_gain_n_exposure(struct gspca_dev *gspca_dev, int avg_lum,
 	int desired_avg_lum, int deadzone, int gain_knee, int exposure_knee);
 #endif /* GSPCAV2_H */
diff --git a/drivers/media/video/gspca/mars.c b/drivers/media/video/gspca/mars.c
index 21c4ee56a10a..d7e209578186 100644
--- a/drivers/media/video/gspca/mars.c
+++ b/drivers/media/video/gspca/mars.c
@@ -439,6 +439,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/ov519.c b/drivers/media/video/gspca/ov519.c
index b4f00ec0885c..c132f8d2cf05 100644
--- a/drivers/media/video/gspca/ov519.c
+++ b/drivers/media/video/gspca/ov519.c
@@ -2132,6 +2132,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/pac207.c b/drivers/media/video/gspca/pac207.c
index cee45b0486cb..d9668f4cb4d1 100644
--- a/drivers/media/video/gspca/pac207.c
+++ b/drivers/media/video/gspca/pac207.c
@@ -596,6 +596,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/pac7311.c b/drivers/media/video/gspca/pac7311.c
index e4f56e0d3ff3..4cc9379ee411 100644
--- a/drivers/media/video/gspca/pac7311.c
+++ b/drivers/media/video/gspca/pac7311.c
@@ -936,6 +936,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/sonixb.c b/drivers/media/video/gspca/sonixb.c
index 11210c71f66c..e535ced79f16 100644
--- a/drivers/media/video/gspca/sonixb.c
+++ b/drivers/media/video/gspca/sonixb.c
@@ -1231,6 +1231,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/sonixj.c b/drivers/media/video/gspca/sonixj.c
index 11a29a969602..0d4677688c91 100644
--- a/drivers/media/video/gspca/sonixj.c
+++ b/drivers/media/video/gspca/sonixj.c
@@ -1617,6 +1617,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca500.c b/drivers/media/video/gspca/spca500.c
index 17fe2c2a440d..5a20385fb170 100644
--- a/drivers/media/video/gspca/spca500.c
+++ b/drivers/media/video/gspca/spca500.c
@@ -1093,6 +1093,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca501.c b/drivers/media/video/gspca/spca501.c
index 51a3c3429ef0..525f1b3400e4 100644
--- a/drivers/media/video/gspca/spca501.c
+++ b/drivers/media/video/gspca/spca501.c
@@ -2154,6 +2154,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca505.c b/drivers/media/video/gspca/spca505.c
index eda29d609359..8f00558c2f59 100644
--- a/drivers/media/video/gspca/spca505.c
+++ b/drivers/media/video/gspca/spca505.c
@@ -855,6 +855,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca506.c b/drivers/media/video/gspca/spca506.c
index f622fa75766d..ae772488cf73 100644
--- a/drivers/media/video/gspca/spca506.c
+++ b/drivers/media/video/gspca/spca506.c
@@ -772,6 +772,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca508.c b/drivers/media/video/gspca/spca508.c
index 699340c17dea..7b38c4e70fdf 100644
--- a/drivers/media/video/gspca/spca508.c
+++ b/drivers/media/video/gspca/spca508.c
@@ -1667,6 +1667,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/spca561.c b/drivers/media/video/gspca/spca561.c
index ec575f5672df..b6a013f1dec4 100644
--- a/drivers/media/video/gspca/spca561.c
+++ b/drivers/media/video/gspca/spca561.c
@@ -1184,6 +1184,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/stk014.c b/drivers/media/video/gspca/stk014.c
index 16219cf6a6d5..387a8cf2b3b1 100644
--- a/drivers/media/video/gspca/stk014.c
+++ b/drivers/media/video/gspca/stk014.c
@@ -564,6 +564,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/sunplus.c b/drivers/media/video/gspca/sunplus.c
index 54efa48bee01..c935384fc232 100644
--- a/drivers/media/video/gspca/sunplus.c
+++ b/drivers/media/video/gspca/sunplus.c
@@ -1456,6 +1456,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/t613.c b/drivers/media/video/gspca/t613.c
index fd6918eefbb0..357a2edad21e 100644
--- a/drivers/media/video/gspca/t613.c
+++ b/drivers/media/video/gspca/t613.c
@@ -1014,6 +1014,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/tv8532.c b/drivers/media/video/gspca/tv8532.c
index 1ff8ba2f7fe5..d2273624a91d 100644
--- a/drivers/media/video/gspca/tv8532.c
+++ b/drivers/media/video/gspca/tv8532.c
@@ -644,6 +644,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/vc032x.c b/drivers/media/video/gspca/vc032x.c
index f4a52956e0d9..47c7ce641d99 100644
--- a/drivers/media/video/gspca/vc032x.c
+++ b/drivers/media/video/gspca/vc032x.c
@@ -1774,6 +1774,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 /* -- module insert / remove -- */
diff --git a/drivers/media/video/gspca/zc3xx.c b/drivers/media/video/gspca/zc3xx.c
index d36f4d7d22b7..79436f27cd4e 100644
--- a/drivers/media/video/gspca/zc3xx.c
+++ b/drivers/media/video/gspca/zc3xx.c
@@ -7584,6 +7584,10 @@ static struct usb_driver sd_driver = {
 	.id_table = device_table,
 	.probe = sd_probe,
 	.disconnect = gspca_disconnect,
+#ifdef CONFIG_PM
+	.suspend = gspca_suspend,
+	.resume = gspca_resume,
+#endif
 };
 
 static int __init sd_mod_init(void)
-- 
2.20.1