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authorMichael Krufky <mkrufky@linuxtv.org>2006-04-22 03:35:50 -0400
committerGreg Kroah-Hartman <gregkh@suse.de>2006-05-01 12:03:43 -0700
commit5667cc6c6ddf816527a04ea9b0c6fc9bee6f8ed3 (patch)
treef728577a28f21eb68774ce9789a271fbb419b51e
parentf5d195f1c98ec76606522daeb49bb7d2eb8065e4 (diff)
downloadlwn-5667cc6c6ddf816527a04ea9b0c6fc9bee6f8ed3.tar.gz
lwn-5667cc6c6ddf816527a04ea9b0c6fc9bee6f8ed3.zip
[PATCH] cxusb-bluebird: bug-fix: power down corrupts frontend
This patch prevents a bug where the frontend is unable to tune after waking from powered down state. Now, the device remains powered on until it is disconnected, just like the windows driver. It seems that the bluebird firmware is unable to successfully handle tuning after a powered down state. This patch fixes all of the FusionHDTV Bluebird USB2 devices. The Medion MD95700 will still behave as before, since it was unaffected by this bug. Signed-off-by: Michael Krufky <mkrufky@linuxtv.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/media/dvb/dvb-usb/cxusb.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/media/dvb/dvb-usb/cxusb.c b/drivers/media/dvb/dvb-usb/cxusb.c
index 162f9795cd89..356a09a699a7 100644
--- a/drivers/media/dvb/dvb-usb/cxusb.c
+++ b/drivers/media/dvb/dvb-usb/cxusb.c
@@ -149,6 +149,15 @@ static int cxusb_power_ctrl(struct dvb_usb_device *d, int onoff)
return cxusb_ctrl_msg(d, CMD_POWER_OFF, &b, 1, NULL, 0);
}
+static int cxusb_bluebird_power_ctrl(struct dvb_usb_device *d, int onoff)
+{
+ u8 b = 0;
+ if (onoff)
+ return cxusb_ctrl_msg(d, CMD_POWER_ON, &b, 1, NULL, 0);
+ else
+ return 0;
+}
+
static int cxusb_streaming_ctrl(struct dvb_usb_device *d, int onoff)
{
u8 buf[2] = { 0x03, 0x00 };
@@ -505,7 +514,7 @@ static struct dvb_usb_properties cxusb_bluebird_lgh064f_properties = {
.size_of_priv = sizeof(struct cxusb_state),
.streaming_ctrl = cxusb_streaming_ctrl,
- .power_ctrl = cxusb_power_ctrl,
+ .power_ctrl = cxusb_bluebird_power_ctrl,
.frontend_attach = cxusb_lgdt3303_frontend_attach,
.tuner_attach = cxusb_lgh064f_tuner_attach,
@@ -545,7 +554,7 @@ static struct dvb_usb_properties cxusb_bluebird_dee1601_properties = {
.size_of_priv = sizeof(struct cxusb_state),
.streaming_ctrl = cxusb_streaming_ctrl,
- .power_ctrl = cxusb_power_ctrl,
+ .power_ctrl = cxusb_bluebird_power_ctrl,
.frontend_attach = cxusb_dee1601_frontend_attach,
.tuner_attach = cxusb_dee1601_tuner_attach,
@@ -594,7 +603,7 @@ static struct dvb_usb_properties cxusb_bluebird_lgz201_properties = {
.size_of_priv = sizeof(struct cxusb_state),
.streaming_ctrl = cxusb_streaming_ctrl,
- .power_ctrl = cxusb_power_ctrl,
+ .power_ctrl = cxusb_bluebird_power_ctrl,
.frontend_attach = cxusb_mt352_frontend_attach,
.tuner_attach = cxusb_lgz201_tuner_attach,
@@ -634,7 +643,7 @@ static struct dvb_usb_properties cxusb_bluebird_dtt7579_properties = {
.size_of_priv = sizeof(struct cxusb_state),
.streaming_ctrl = cxusb_streaming_ctrl,
- .power_ctrl = cxusb_power_ctrl,
+ .power_ctrl = cxusb_bluebird_power_ctrl,
.frontend_attach = cxusb_mt352_frontend_attach,
.tuner_attach = cxusb_dtt7579_tuner_attach,