diff options
| author |   Andy Walls <awalls@md.metrocast.net> | 2010-07-19 21:22:05 -0300 |
|---|---|---|
| committer |   Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-08-08 23:42:56 -0300 |
| commit | fa647f249fa3399b8c90e2c4a07459c5d7976ffe (patch) | |
| tree | 204b41912104c5fce7bc9fee8e0c8a9ebd110fc9 /drivers/media/video/cx23885 | |
| parent | V4L/DVB: cx23885: Move AV Core irq handling to a work handler (diff) | |
| download | linux-dev-fa647f249fa3399b8c90e2c4a07459c5d7976ffe.tar.xz linux-dev-fa647f249fa3399b8c90e2c4a07459c5d7976ffe.zip | |
V4L/DVB: cx23885: Require user to explicitly enable CX2388[57] IR via module param
The CX23885 IR controller was reported to cause an interrupt storm
on a TeVii S470 card, but was reported fine on an HVR-1250. Keep
integrated IR disabled by default on CX2388[57] based cards to avoid
a bad user experience in the general case.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/cx23885')
| -rw-r--r-- | drivers/media/video/cx23885/cx23885-cards.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/media/video/cx23885/cx23885-cards.c b/drivers/media/video/cx23885/cx23885-cards.c index d72b48ef940e..e76ce8709afd 100644 --- a/drivers/media/video/cx23885/cx23885-cards.c +++ b/drivers/media/video/cx23885/cx23885-cards.c @@ -30,6 +30,16 @@ #include "netup-init.h" #include "cx23888-ir.h" +static unsigned int enable_885_ir; +module_param(enable_885_ir, int, 0644); +MODULE_PARM_DESC(enable_885_ir, + "Enable integrated IR controller for supported\n" + "\t\t CX2388[57] boards that are wired for it:\n" + "\t\t\tHVR-1250 (reported safe)\n" + "\t\t\tTeVii S470 (reported unsafe)\n" + "\t\t This can cause an interrupt storm with some cards.\n" + "\t\t Default: 0 [Disabled]"); + /* ------------------------------------------------------------------ */ /* board config info */ @@ -1025,6 +1035,8 @@ int cx23885_ir_init(struct cx23885_dev *dev) v4l2_subdev_call(dev->sd_ir, ir, tx_s_parameters, ¶ms); break; case CX23885_BOARD_TEVII_S470: + if (!enable_885_ir) + break; dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_AV_CORE); if (dev->sd_ir == NULL) { ret = -ENODEV; @@ -1034,6 +1046,8 @@ int cx23885_ir_init(struct cx23885_dev *dev) ir_rx_pin_cfg_count, ir_rx_pin_cfg); break; case CX23885_BOARD_HAUPPAUGE_HVR1250: + if (!enable_885_ir) + break; dev->sd_ir = cx23885_find_hw(dev, CX23885_HW_AV_CORE); if (dev->sd_ir == NULL) { ret = -ENODEV; @@ -1214,6 +1228,11 @@ void cx23885_card_setup(struct cx23885_dev *dev) * loaded, ensure this happens. */ switch (dev->board) { + case CX23885_BOARD_TEVII_S470: + case CX23885_BOARD_HAUPPAUGE_HVR1250: + /* Currently only enabled for the integrated IR controller */ + if (!enable_885_ir) + break; case CX23885_BOARD_HAUPPAUGE_HVR1800: case CX23885_BOARD_HAUPPAUGE_HVR1800lp: case CX23885_BOARD_HAUPPAUGE_HVR1700: @@ -1226,8 +1245,6 @@ void cx23885_card_setup(struct cx23885_dev *dev) case CX23885_BOARD_MAGICPRO_PROHDTVE2: case CX23885_BOARD_HAUPPAUGE_HVR1290: case CX23885_BOARD_LEADTEK_WINFAST_PXTV1200: - case CX23885_BOARD_TEVII_S470: - case CX23885_BOARD_HAUPPAUGE_HVR1250: dev->sd_cx25840 = v4l2_i2c_new_subdev(&dev->v4l2_dev, &dev->i2c_bus[2].i2c_adap, "cx25840", "cx25840", 0x88 >> 1, NULL); |