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ALSA: hda: Using polling mode for loongson controller by default

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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>
This commit is contained in:
Yanteng Si 2023-06-07 17:21:50 +08:00 committed by Takashi Iwai
parent 28bd137a3c
commit cbc3e98acf
3 changed files with 10 additions and 1 deletions
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1
include/sound/hdaudio.h
View File

@ -347,6 +347,7 @@ struct hdac_bus {
bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
bool polling_mode:1;
bool needs_damn_long_delay:1;
bool not_use_interrupts:1; /* prohibiting the RIRB IRQ */
int poll_count;

5
sound/hda/hdac_controller.c
View File

@ -79,7 +79,10 @@ void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus)
/* set N=1, get RIRB response interrupt for new entry */
snd_hdac_chip_writew(bus, RINTCNT, 1);
/* enable rirb dma and response irq */
snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);
if (bus->not_use_interrupts)
snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN);
else
snd_hdac_chip_writeb(bus, RIRBCTL, AZX_RBCTL_DMA_EN | AZX_RBCTL_IRQ_EN);
/* Accept unsolicited responses */
snd_hdac_chip_updatel(bus, GCTL, AZX_GCTL_UNSOL, AZX_GCTL_UNSOL);
spin_unlock_irq(&bus->reg_lock);

5
sound/pci/hda/hda_intel.c
View File

@ -1875,6 +1875,11 @@ static int azx_first_init(struct azx *chip)
if (chip->driver_type == AZX_DRIVER_GFHDMI)
bus->polling_mode = 1;
if (chip->driver_type == AZX_DRIVER_LOONGSON) {
bus->polling_mode = 1;
bus->not_use_interrupts = 1;
}
err = pcim_iomap_regions(pci, 1 << 0, "ICH HD audio");
if (err < 0)
return err;