ALSA: hda: Support PCM sync_stop

The driver invokes snd_pcm_period_elapsed() simply from the interrupt
handler.  Set card->sync_irq for enabling the missing sync_stop PCM
operation.  It's cleared and reset dynamically at IRQ re-acquiring for
the PM resume, too.

Link: https://lore.kernel.org/r/20191210063454.31603-22-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c
index b856b89..c86539c 100644 (file)
--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -790,6 +790,7 @@ static int azx_acquire_irq(struct azx *chip, int do_disconnect)
                return -1;
        }
        bus->irq = chip->pci->irq;
+       chip->card->sync_irq = bus->irq;
        pci_intx(chip->pci, !chip->msi);
        return 0;
 }
@@ -1028,6 +1029,7 @@ static int azx_suspend(struct device *dev)
        if (bus->irq >= 0) {
                free_irq(bus->irq, chip);
                bus->irq = -1;
+               chip->card->sync_irq = -1;
        }
 
        if (chip->msi)
@@ -1883,7 +1885,6 @@ static int azx_first_init(struct azx *chip)
        }
 
        pci_set_master(pci);
-       synchronize_irq(bus->irq);
 
        gcap = azx_readw(chip, GCAP);
        dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);
@@ -2042,6 +2043,7 @@ static int disable_msi_reset_irq(struct azx *chip)
 
        free_irq(bus->irq, chip);
        bus->irq = -1;
+       chip->card->sync_irq = -1;
        pci_disable_msi(chip->pci);
        chip->msi = 0;
        err = azx_acquire_irq(chip, 1);

diff --git a/sound/pci/hda/hda_tegra.c b/sound/pci/hda/hda_tegra.c
index 8350954..fc2e0a2 100644 (file)
--- a/sound/pci/hda/hda_tegra.c
+++ b/sound/pci/hda/hda_tegra.c
@@ -170,7 +170,6 @@ static int __maybe_unused hda_tegra_runtime_suspend(struct device *dev)
 
        if (chip && chip->running) {
                azx_stop_chip(chip);
-               synchronize_irq(bus->irq);
                azx_enter_link_reset(chip);
        }
        hda_tegra_disable_clocks(hda);
@@ -298,8 +297,7 @@ static int hda_tegra_first_init(struct azx *chip, struct platform_device *pdev)
                return err;
        }
        bus->irq = irq_id;
-
-       synchronize_irq(bus->irq);
+       card->sync_irq = bus->irq;
 
        gcap = azx_readw(chip, GCAP);
        dev_dbg(card->dev, "chipset global capabilities = 0x%x\n", gcap);