V4L/DVB (9764): em28xx: Add support for suspend the device when not used
Several chips may be turned off when the device is not used, like audio,
video and dvb demods. This patch adds a gpio callback at the core
structs to allow turning off such devices.
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/em28xx/em28xx-dvb.c b/drivers/media/video/em28xx/em28xx-dvb.c
index 09c15cc..211156d 100644
--- a/drivers/media/video/em28xx/em28xx-dvb.c
+++ b/drivers/media/video/em28xx/em28xx-dvb.c
@@ -161,7 +161,7 @@
em28xx_uninit_isoc(dev);
- em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+ em28xx_set_mode(dev, EM28XX_SUSPEND);
return 0;
}
@@ -215,7 +215,7 @@
if (acquire)
return em28xx_set_mode(dev, EM28XX_DIGITAL_MODE);
else
- return em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+ return em28xx_set_mode(dev, EM28XX_SUSPEND);
}
/* ------------------------------------------------------------------ */
@@ -466,12 +466,12 @@
if (result < 0)
goto out_free;
- em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+ em28xx_set_mode(dev, EM28XX_SUSPEND);
printk(KERN_INFO "Successfully loaded em28xx-dvb\n");
return 0;
out_free:
- em28xx_set_mode(dev, EM28XX_MODE_UNDEFINED);
+ em28xx_set_mode(dev, EM28XX_SUSPEND);
kfree(dvb);
dev->dvb = NULL;
return result;