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| author | Manu Abraham <abraham.manu@gmail.com> | 2009-12-04 05:29:48 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2010-01-17 11:55:40 -0200 |
| commit | e0e099a708043a2341d8987014ce4ba98a4dbd30 (patch) | |
| tree | fb751880cf7765e099d0f2d1c21f28f66de8e494 | |
| parent | ac8f04d2723b3de7c36430d67401ce89c858e117 (diff) | |
| download | op-kernel-dev-e0e099a708043a2341d8987014ce4ba98a4dbd30.zip op-kernel-dev-e0e099a708043a2341d8987014ce4ba98a4dbd30.tar.gz | |
V4L/DVB (13777): [Mantis] Use a Write wait queue for Write events
Signed-off-by: Manu Abraham <manu@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
| -rw-r--r-- | drivers/media/dvb/mantis/mantis_hif.c | 34 | ||||
| -rw-r--r-- | drivers/media/dvb/mantis/mantis_link.h | 1 |
2 files changed, 33 insertions, 2 deletions
diff --git a/drivers/media/dvb/mantis/mantis_hif.c b/drivers/media/dvb/mantis/mantis_hif.c index a2359f7..dc50fac 100644 --- a/drivers/media/dvb/mantis/mantis_hif.c +++ b/drivers/media/dvb/mantis/mantis_hif.c @@ -57,6 +57,35 @@ static int mantis_hif_sbuf_opdone_wait(struct mantis_ca *ca) return rc; } +static int mantis_hif_write_wait(struct mantis_ca *ca) +{ + struct mantis_pci *mantis = ca->ca_priv; + u32 opdone = 0, timeout = 0; + int rc = 0; + + if (wait_event_timeout(ca->hif_write_wq, + mantis->gpif_status & MANTIS_GPIF_WRACK, + msecs_to_jiffies(500)) == -ERESTARTSYS) { + + dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): Write ACK timed out !", mantis->num); + rc = -EREMOTEIO; + } + dprintk(verbose, MANTIS_DEBUG, 1, "Write Acknowledged"); + mantis->gpif_status &= ~MANTIS_GPIF_WRACK; + while (!opdone) { + opdone = (mmread(MANTIS_GPIF_STATUS) & MANTIS_SBUF_OPDONE); + udelay(500); + timeout++; + if (timeout > 100) { + dprintk(verbose, MANTIS_ERROR, 1, "Adater(%d) Slot(0): Write operation timed out!", mantis->num); + rc = -ETIMEDOUT; + break; + } + } + dprintk(verbose, MANTIS_DEBUG, 1, "HIF Write success"); + return rc; +} + int mantis_hif_read_mem(struct mantis_ca *ca, u32 addr) { @@ -100,7 +129,7 @@ int mantis_hif_write_mem(struct mantis_ca *ca, u32 addr, u8 data) mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR); mmwrite(data, MANTIS_GPIF_DOUT); - if (mantis_hif_sbuf_opdone_wait(ca) != 0) { + if (mantis_hif_write_wait(ca) != 0) { dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); return -EREMOTEIO; } @@ -147,7 +176,7 @@ int mantis_hif_write_iom(struct mantis_ca *ca, u32 addr, u8 data) mmwrite(hif_addr | MANTIS_HIF_STATUS, MANTIS_GPIF_ADDR); mmwrite(data, MANTIS_GPIF_DOUT); - if (mantis_hif_sbuf_opdone_wait(ca) != 0) { + if (mantis_hif_write_wait(ca) != 0) { dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Slot(0): HIF Smart Buffer operation failed", mantis->num); return -EREMOTEIO; } @@ -167,6 +196,7 @@ int mantis_hif_init(struct mantis_ca *ca) dprintk(verbose, MANTIS_ERROR, 1, "Adapter(%d) Initializing Mantis Host Interface", mantis->num); init_waitqueue_head(&ca->hif_data_wq); init_waitqueue_head(&ca->hif_opdone_wq); + init_waitqueue_head(&ca->hif_write_wq); irqcfg = mmread(MANTIS_GPIF_IRQCFG); irqcfg = MANTIS_MASK_BRRDY | diff --git a/drivers/media/dvb/mantis/mantis_link.h b/drivers/media/dvb/mantis/mantis_link.h index a85f502..599ff1b 100644 --- a/drivers/media/dvb/mantis/mantis_link.h +++ b/drivers/media/dvb/mantis/mantis_link.h @@ -51,6 +51,7 @@ struct mantis_ca { wait_queue_head_t hif_opdone_wq; wait_queue_head_t hif_brrdyw_wq; wait_queue_head_t hif_data_wq; + wait_queue_head_t hif_write_wq; /* HIF Write op */ enum mantis_sbuf_status sbuf_status; |
