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hw/audio/intel-hda: don't reset codecs twice 

Currently the intel-hda device has a reset method which manually
resets all the codecs by calling device_legacy_reset() on them.  This
means they get reset twice, once because child devices on a qbus get
reset before the parent device's reset method is called, and then
again because we're manually resetting them.

Drop the manual reset call, and ensure that codecs are still reset
when the guest does a reset via ICH6_GCTL_RESET by using
device_cold_reset() (which resets all the devices on the qbus as well
as the device itself) instead of a direct call to the reset function.

This is a slight ordering change because the (only) codec reset now
happens before the controller registers etc are reset, rather than
once before and then once after, but the codec reset function
hda_audio_reset() doesn't care.

This lets us drop a use of device_legacy_reset(), which is
deprecated.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221014142632.2092404-2-peter.maydell@linaro.org>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Peter Maydell 2022-10-14 15:26:31 +01:00 committed by Gerd Hoffmann
parent 1dfb7a175f
commit 3e95ef49e6
1 changed files with 1 additions and 3 deletions
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4
hw/audio/intel-hda.c
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@ -516,7 +516,7 @@ static void intel_hda_notify_codecs(IntelHDAState *d, uint32_t stream, bool runn
static void intel_hda_set_g_ctl(IntelHDAState *d, const IntelHDAReg *reg, uint32_t old)
{
if ((d->g_ctl & ICH6_GCTL_RESET) == 0) {
intel_hda_reset(DEVICE(d));
device_cold_reset(DEVICE(d));
}
}
@ -1083,11 +1083,9 @@ static void intel_hda_reset(DeviceState *dev)
intel_hda_regs_reset(d);
d->wall_base_ns = qemu_clock_get_ns(QEMU_CLOCK_VIRTUAL);
/* reset codecs */
QTAILQ_FOREACH(kid, &d->codecs.qbus.children, sibling) {
DeviceState *qdev = kid->child;
cdev = HDA_CODEC_DEVICE(qdev);
device_legacy_reset(DEVICE(cdev));
d->state_sts |= (1 << cdev->cad);
}
intel_hda_update_irq(d);