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[10/21,staging] tm6000: Disable video interface in radio mode.

Message ID 1312442059-23935-11-git-send-email-thierry.reding@avionic-design.de (mailing list archive)
State Accepted
Headers show

Commit Message

Thierry Reding Aug. 4, 2011, 7:14 a.m. UTC 
Video data is useless in radio mode, so the corresponding interface can
be safely disabled. This should reduce the amount of isochronous traffic
noticeably.
---
 drivers/staging/tm6000/tm6000-core.c |    7 ++++++-
 1 files changed, 6 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/staging/tm6000/tm6000-core.c b/drivers/staging/tm6000/tm6000-core.c
index 2117f8e..1f8abe3 100644
--- a/drivers/staging/tm6000/tm6000-core.c
+++ b/drivers/staging/tm6000/tm6000-core.c
@@ -264,9 +264,14 @@  int tm6000_init_analog_mode(struct tm6000_core *dev)
 	struct v4l2_frequency f;
 
 	if (dev->dev_type == TM6010) {
+		u8 active = TM6010_REQ07_RCC_ACTIVE_IF_AUDIO_ENABLE;
+
+		if (!dev->radio)
+			active |= TM6010_REQ07_RCC_ACTIVE_IF_VIDEO_ENABLE;
+
 		/* Enable video and audio */
 		tm6000_set_reg_mask(dev, TM6010_REQ07_RCC_ACTIVE_IF,
-							0x60, 0x60);
+							active, 0x60);
 		/* Disable TS input */
 		tm6000_set_reg_mask(dev, TM6010_REQ07_RC0_ACTIVE_VIDEO_SOURCE,
 							0x00, 0x40);