[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 defac24..c1091c4 100644 (file)
--- a/drivers/media/usb/em28xx/em28xx-dvb.c
+++ b/drivers/media/usb/em28xx/em28xx-dvb.c
@@ -1515,11 +1515,68 @@ 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)