From: Shuah Khan <shuah.kh@samsung.com>
Date: Sat, 22 Feb 2014 00:50:15 +0000 (-0300)
Subject: upstream: [media] em28xx-dvb: implement em28xx_ops: suspend/resume hooks
X-Git-Tag: submit/tizen/20141121.110247~1418
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1775d699caa51c5f8f6432440312aa7903ca45c6;p=platform%2Fkernel%2Flinux-3.10.git

upstream: [media] em28xx-dvb: implement em28xx_ops: suspend/resume hooks

Implement em28xx_ops: suspend/resume hooks. em28xx usb driver will
invoke em28xx_ops: suspend and resume hooks for all its extensions
from its suspend() and resume() interfaces.

Signed-off-by: Shuah Khan <shuah.kh@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
---

diff --git a/drivers/media/usb/em28xx/em28xx-dvb.c b/drivers/media/usb/em28xx/em28xx-dvb.c
index e084232..f3d27c4 100644
--- a/drivers/media/usb/em28xx/em28xx-dvb.c
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -1405,11 +1405,68 @@ static int em28xx_dvb_fini(struct em28xx *dev)
 	return 0;
 }
 
+static int em28xx_dvb_suspend(struct em28xx *dev)
+{
+	int ret = 0;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->board.has_dvb)
+		return 0;
+
+	em28xx_info("Suspending DVB extension");
+	if (dev->dvb) {
+		struct em28xx_dvb *dvb = dev->dvb;
+
+		if (dvb->fe[0]) {
+			ret = dvb_frontend_suspend(dvb->fe[0]);
+			em28xx_info("fe0 suspend %d", ret);
+		}
+		if (dvb->fe[1]) {
+			dvb_frontend_suspend(dvb->fe[1]);
+			em28xx_info("fe1 suspend %d", ret);
+		}
+	}
+
+	return 0;
+}
+
+static int em28xx_dvb_resume(struct em28xx *dev)
+{
+	int ret = 0;
+
+	if (dev->is_audio_only)
+		return 0;
+
+	if (!dev->board.has_dvb)
+		return 0;
+
+	em28xx_info("Resuming DVB extension");
+	if (dev->dvb) {
+		struct em28xx_dvb *dvb = dev->dvb;
+
+		if (dvb->fe[0]) {
+			ret = dvb_frontend_resume(dvb->fe[0]);
+			em28xx_info("fe0 resume %d", ret);
+		}
+
+		if (dvb->fe[1]) {
+			ret = dvb_frontend_resume(dvb->fe[1]);
+			em28xx_info("fe1 resume %d", ret);
+		}
+	}
+
+	return 0;
+}
+
 static struct em28xx_ops dvb_ops = {
 	.id   = EM28XX_DVB,
 	.name = "Em28xx dvb Extension",
 	.init = em28xx_dvb_init,
 	.fini = em28xx_dvb_fini,
+	.suspend = em28xx_dvb_suspend,
+	.resume = em28xx_dvb_resume,
 };
 
 static int __init em28xx_dvb_register(void)