Enable burst mode to prevent dropouts during high PCI bus usage. The card is useless in X without this because of dropouts when anything moves on the screen (at least with PCI VGA card). Enabling this is also recommended by the datasheet (page 48). Signed-off-by: Ondrej Zary <linux@xxxxxxxxxxxxxxxxxxxx> --- linux-2.6.35-rc2/sound/pci/als4000.c 2010-06-06 05:43:24.000000000 +0200 +++ linux-2.6.35-rc3/sound/pci/als4000.c 2010-08-03 23:50:08.000000000 +0200 @@ -763,9 +763,9 @@ static void snd_als4000_configure(struct /* SPECS_PAGE: 39 */ for (i = ALS4K_GCR91_DMA0_ADDR; i <= ALS4K_GCR96_DMA3_MODE_COUNT; ++i) snd_als4k_gcr_write(chip, i, 0); - + /* enable burst mode to prevent dropouts during high PCI bus usage */ snd_als4k_gcr_write(chip, ALS4K_GCR99_DMA_EMULATION_CTRL, - snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL)); + snd_als4k_gcr_read(chip, ALS4K_GCR99_DMA_EMULATION_CTRL) | 0x04); spin_unlock_irq(&chip->reg_lock); } -- Ondrej Zary _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
