diff options
| author | Ingo Schneider <mail@ingo-schneider.de> | 2006-03-29 22:05:16 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2006-04-02 04:55:57 -0300 |
| commit | afa47abf09f148332b0e6e480972494bc2e5c8af (patch) | |
| tree | 2f7222cc9de26adcbe5052f606d1f03dbdd599d0 /drivers/media/dvb/ttpci/budget-patch.c | |
| parent | 1864cfb1537e108c2fe7a8e178b28bffde5a5439 (diff) | |
V4L/DVB (3669): Configurable dma buffer size for saa7146-based budget dvb cards
- Issue a warning when more than 80% of the DMA buffer is being used
(probably due to bad IRQ latency). Warnings are rate-limited.
- Introduce a new parameter 'bufsize' (in KByte) which increases the
default DMA buffer of 188 KByte up to 1410 KByte (Activy: 564 KByte).
Signed-off-by: Ingo Schneider <mail@ingo-schneider.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/dvb/ttpci/budget-patch.c')
| -rw-r--r-- | drivers/media/dvb/ttpci/budget-patch.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/media/dvb/ttpci/budget-patch.c b/drivers/media/dvb/ttpci/budget-patch.c index 9fc9185a842..1b3aaac5e76 100644 --- a/drivers/media/dvb/ttpci/budget-patch.c +++ b/drivers/media/dvb/ttpci/budget-patch.c @@ -577,6 +577,17 @@ static int budget_patch_attach (struct saa7146_dev* dev, struct saa7146_pci_exte saa7146_setgpio(dev, 3, SAA7146_GPIO_OUTLO); // Set RPS1 Address register to point to RPS code (r108 p42) saa7146_write(dev, RPS_ADDR1, dev->d_rps1.dma_handle); + + if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL))) + return -ENOMEM; + + dprintk(2, "budget: %p\n", budget); + + if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) { + kfree (budget); + return err; + } + // Set Source Line Counter Threshold, using BRS (rCC p43) // It generates HS event every TS_HEIGHT lines // this is related to TS_WIDTH set in register @@ -585,24 +596,13 @@ static int budget_patch_attach (struct saa7146_dev* dev, struct saa7146_pci_exte //,then RPS_THRESH1 // should be set to trigger every TS_HEIGHT (512) lines. // - saa7146_write(dev, RPS_THRESH1, (TS_HEIGHT*1) | MASK_12 ); + saa7146_write(dev, RPS_THRESH1, budget->buffer_height | MASK_12 ); // saa7146_write(dev, RPS_THRESH0, ((TS_HEIGHT/2)<<16) |MASK_28| (TS_HEIGHT/2) |MASK_12 ); // Enable RPS1 (rFC p33) saa7146_write(dev, MC1, (MASK_13 | MASK_29)); - if (!(budget = kmalloc (sizeof(struct budget_patch), GFP_KERNEL))) - return -ENOMEM; - - dprintk(2, "budget: %p\n", budget); - - if ((err = ttpci_budget_init (budget, dev, info, THIS_MODULE))) { - kfree (budget); - return err; - } - - dev->ext_priv = budget; budget->dvb_adapter.priv = budget; |