diff options
| author | Abylay Ospan <aospan@netup.ru> | 2010-03-06 18:46:39 (GMT) |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-05-18 03:46:42 (GMT) |
| commit | 2a8f96085449f3aa6fe99b27d7ee506e808059b9 (patch) | |
| tree | 4c4aab41a94eddd02f346853f8920dc30d6fc73e | |
| parent | 403c34f6bbc095f9c8b2e25becd65c9c3d159080 (diff) | |
| download | linux-fsl-qoriq-2a8f96085449f3aa6fe99b27d7ee506e808059b9.tar.xz | |
V4L/DVB: configurable IRQ from CAM
IRQ from CAM disabled by default. In some environment enabled IRQ can cause of
machine freeze.
Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/video/cx23885/cimax2.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/media/video/cx23885/cimax2.c b/drivers/media/video/cx23885/cimax2.c index d4a9d2c..c95e7bc 100644 --- a/drivers/media/video/cx23885/cimax2.c +++ b/drivers/media/video/cx23885/cimax2.c @@ -60,12 +60,18 @@ static unsigned int ci_dbg; module_param(ci_dbg, int, 0644); MODULE_PARM_DESC(ci_dbg, "Enable CI debugging"); +static unsigned int ci_irq_enable; +module_param(ci_irq_enable, int, 0644); +MODULE_PARM_DESC(ci_irq_enable, "Enable IRQ from CAM"); + #define ci_dbg_print(args...) \ do { \ if (ci_dbg) \ printk(KERN_DEBUG args); \ } while (0) +#define ci_irq_flags() (ci_irq_enable ? NETUP_IRQ_IRQAM : 0) + /* stores all private variables for communication with CI */ struct netup_ci_state { struct dvb_ca_en50221 ca; @@ -392,7 +398,7 @@ int netup_poll_ci_slot_status(struct dvb_ca_en50221 *en50221, int slot, int open if (0 != slot) return -EINVAL; - netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | NETUP_IRQ_IRQAM) + netup_ci_set_irq(en50221, open ? (NETUP_IRQ_DETAM | ci_irq_flags()) : NETUP_IRQ_DETAM); return state->status; @@ -429,7 +435,7 @@ int netup_ci_init(struct cx23885_tsport *port) 0x01, /* power on (use it like store place) */ 0x00, /* RFU */ 0x00, /* int status read only */ - NETUP_IRQ_IRQAM | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */ + ci_irq_flags() | NETUP_IRQ_DETAM, /* DETAM, IRQAM unmasked */ 0x05, /* EXTINT=active-high, INT=push-pull */ 0x00, /* USCG1 */ 0x04, /* ack active low */ @@ -470,7 +476,7 @@ int netup_ci_init(struct cx23885_tsport *port) state->ca.poll_slot_status = netup_poll_ci_slot_status; state->ca.data = state; state->priv = port; - state->current_irq_mode = NETUP_IRQ_IRQAM | NETUP_IRQ_DETAM; + state->current_irq_mode = ci_irq_flags() | NETUP_IRQ_DETAM; ret = netup_write_i2c(state->i2c_adap, state->ci_i2c_addr, 0, &cimax_init[0], 34); |