ALSA: hda: Using polling mode for loongson controller by default
On loongson controller, RIRBSTS.RINTFL cannot be cleared, azx_interrupt() is called all the time. We disable RIRB interrupt, and use polling mode by default. Signed-off-by: Yanteng Si <siyanteng@loongson.cn> Signed-off-by: Yingkun Meng <mengyingkun@loongson.cn> Acked-by: Huacai Chen <chenhuacai@loongson.cn> Link: https://lore.kernel.org/r/d309a75424d438b958d90d797b4f1ba45468e090.1686128807.git.siyanteng@loongson.cn Signed-off-by: Takashi Iwai <tiwai@suse.de>
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@ -347,6 +347,7 @@ struct hdac_bus {
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bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
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bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
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bool polling_mode:1;
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bool polling_mode:1;
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bool needs_damn_long_delay:1;
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bool needs_damn_long_delay:1;
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bool not_use_interrupts:1; /* prohibiting the RIRB IRQ */
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int poll_count;
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int poll_count;
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@ -79,7 +79,10 @@ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)
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/* set N=1, get RIRB response interrupt for new entry */
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/* set N=1, get RIRB response interrupt for new entry */
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snd_hdac_chip_writew(bus, RINTCNT, 1);
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snd_hdac_chip_writew(bus, RINTCNT, 1);
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/* enable rirb dma and response irq */
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/* enable rirb dma and response irq */
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snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);
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if (bus->not_use_interrupts)
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snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN);
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else
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snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);
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/* Accept unsolicited responses */
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/* Accept unsolicited responses */
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snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
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snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
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spin_unlock_irq(&bus->reg_lock);
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spin_unlock_irq(&bus->reg_lock);
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@ -1875,6 +1875,11 @@ static int azx_first_init(struct azx *chip)
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if (chip->driver_type == AZX_DRIVER_GFHDMI)
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if (chip->driver_type == AZX_DRIVER_GFHDMI)
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bus->polling_mode = 1;
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bus->polling_mode = 1;
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if (chip->driver_type == AZX_DRIVER_LOONGSON) {
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bus->polling_mode = 1;
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bus->not_use_interrupts = 1;
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}
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err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
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err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
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if (err < 0)
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if (err < 0)
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return err;
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return err;
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