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V4L/DVB (13966): DVB-T regression fix for saa7134 cards

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Some customers has problem with quality of DVB-T
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/446575

After this patch http://patchwork.kernel.org/patch/23345/

This is patch for fix regression with DVB-T. Tested with many people.

Signed-off-by: Alexey Osipov <lion-simba@pridelands.ru>
Signed-off-by: Beholder Intl. Ltd. Dmitry Belimov <d.belimov@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Dmitri Belimov 2010-01-08 06:38:28 -03:00 committed by Mauro Carvalho Chehab
parent 423f5c0d01
commit 08be64be3d
2 changed files with 13 additions and 13 deletions
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13
drivers/media/video/saa7134/saa7134-core.c
View file

@ -420,19 +420,6 @@ int saa7134_set_dmabits(struct saa7134_dev *dev)
ctrl |= SAA7134_MAIN_CTRL_TE5;
irq |= SAA7134_IRQ1_INTE_RA2_1 |
SAA7134_IRQ1_INTE_RA2_0;
/* dma: setup channel 5 (= TS) */
saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);
saa_writeb(SAA7134_TS_DMA1,
((dev->ts.nr_packets - 1) >> 8) & 0xff);
/* TSNOPIT=0, TSCOLAP=0 */
saa_writeb(SAA7134_TS_DMA2,
(((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00);
saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 |
SAA7134_RS_CONTROL_ME |
(dev->ts.pt_ts.dma >> 12));
}
/* set task conditions + field handling */

13
drivers/media/video/saa7134/saa7134-ts.c
View file

@ -250,6 +250,19 @@ int saa7134_ts_start(struct saa7134_dev *dev)
BUG_ON(dev->ts_started);
/* dma: setup channel 5 (= TS) */
saa_writeb(SAA7134_TS_DMA0, (dev->ts.nr_packets - 1) & 0xff);
saa_writeb(SAA7134_TS_DMA1,
((dev->ts.nr_packets - 1) >> 8) & 0xff);
/* TSNOPIT=0, TSCOLAP=0 */
saa_writeb(SAA7134_TS_DMA2,
(((dev->ts.nr_packets - 1) >> 16) & 0x3f) | 0x00);
saa_writel(SAA7134_RS_PITCH(5), TS_PACKET_SIZE);
saa_writel(SAA7134_RS_CONTROL(5), SAA7134_RS_CONTROL_BURST_16 |
SAA7134_RS_CONTROL_ME |
(dev->ts.pt_ts.dma >> 12));
/* reset hardware TS buffers */
saa_writeb(SAA7134_TS_SERIAL1, 0x00);
saa_writeb(SAA7134_TS_SERIAL1, 0x03);
saa_writeb(SAA7134_TS_SERIAL1, 0x00);