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ASoC: hdac_hdmi: Fix to wait for D3 before powering off codec

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Powering off codec immediately after sending D3 verb may not set
the node to D3 state. So wait for a confirmation response before
shutting down codec.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Subhransu S. Prusty 2016-02-22 07:50:32 +05:30 committed by Mark Brown
parent ab85f5b36e
commit 7ed49700c4
1 changed files with 11 additions and 1 deletions
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12
sound/soc/codecs/hdac_hdmi.c
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@ -1486,6 +1486,7 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
struct hdac_ext_device *edev = to_hda_ext_device(dev);
struct hdac_device *hdac = &edev->hdac;
struct hdac_bus *bus = hdac->bus;
unsigned long timeout;
int err;
dev_dbg(dev, "Enter: %s\n", __func__);
@ -1495,10 +1496,19 @@ static int hdac_hdmi_runtime_suspend(struct device *dev)
return 0;
/* Power down afg */
if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3))
if (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3)) {
snd_hdac_codec_write(hdac, hdac->afg, 0,
AC_VERB_SET_POWER_STATE, AC_PWRST_D3);
/* Wait till power state is set to D3 */
timeout = jiffies + msecs_to_jiffies(1000);
while (!snd_hdac_check_power_state(hdac, hdac->afg, AC_PWRST_D3)
&& time_before(jiffies, timeout)) {
msleep(50);
}
}
err = snd_hdac_display_power(bus, false);
if (err < 0) {
dev_err(bus->dev, "Cannot turn on display power on i915\n");