[alsa-devel] [PATCH] ASoC: rx51: do not fail if could not get jack detection gpio
Pali Rohár
pali.rohar at gmail.com
Tue Jan 27 15:11:08 CET 2015
On Tuesday 27 January 2015 14:41:43 Peter Ujfalusi wrote:
> On 01/27/2015 03:32 PM, Pavel Machek wrote:
> > On Tue 2015-01-27 15:27:58, Peter Ujfalusi wrote:
> >> Hi,
> >>
> >> On 01/26/2015 10:51 PM, Pali Rohár wrote:
> >>> qemu does not emulate it
> >>
> >> Not sure about this... How does qemu emulate tlv320aic3106,
> >> tpa6130a2a, McBSP, sDMA for audio to work? What about the
> >> other three GPIOs in this machine driver?
> >>
No idea, but with my patch rx51-audio loads without any problem.
> >> The "nokia,n900-audio" compatible mandates that the
> >> jack-detection GPIO must be provided
> >> (Documentation/devicetree/bindings/sound/nokia,rx51.txt)
> >> since it means that the driver is running on the Nokia
> >> n900 HW.
> >
> > Fix the documentation, then :-).
>
> You mean document a workaround for qemu, right? AFAIK the
> documentation is fine ;)
>
> > [Actually, GPIO is provided, it just can't be requested,
> > AFAICT.]
>
> So what about the other GPIOs in the machine driver? Why is
> this jack-detection GPIO is special for qemu?
>
Qemu does not detect it and cause rx51-audio driver to fail.
> > It is quite important to keep qemu working, really.
> > Debugging early boot on hardware is very hard, for example.
>
> I understand, but looking at the history of the driver, if it
> fails now with the jack-detection GPIO, it should have been
> failing in the past as well. What triggered this sudden qemu
> does not like jack-detection GPIO? Before the
> devm_gpiod_get() conversion the driver should have failed in
> snd_soc_jack_add_gpios() phase.
>
With 3.12 kernel rx51-audio driver loads without any problem. So
there is some regression. Here is dmesg log from 3.12 kernel:
[ 1.123779] rx51-audio rx51-audio: tlv320aic3x-hifi <-> omap-
mcbsp.2 mapping ok
[ 1.130737] tlv320aic3x-codec 2-0019: ASoC: mux b Right Line1L
Mux has no paths
[ 1.131347] tlv320aic3x-codec 2-0019: ASoC: mux b Left Line1R
Mux has no paths
[ 1.133697] tlv320aic3x-codec 2-0018: ASoC: mux Right Line1L
Mux has no paths
[ 1.134307] tlv320aic3x-codec 2-0018: ASoC: mux Left Line1R
Mux has no paths
[ 1.137451] input: RX-51 AV Jack as /devices/platform/rx51-
audio/sound/card0/input2
I will try to investigate where is problem...
> > And yes, some day we may need different dts for n900-qemu
> > (vs. n900-hw), but lets not do it just yet.
> >
> > Pavel
> >>>
> >>> Signed-off-by: Pali Rohár <pali.rohar at gmail.com>
> >>> ---
> >>>
> >>> sound/soc/omap/rx51.c | 45
> >>> +++++++++++++++++++++++++-------------------- 1 file
> >>> changed, 25 insertions(+), 20 deletions(-)
> >>>
> >>> diff --git a/sound/soc/omap/rx51.c b/sound/soc/omap/rx51.c
> >>> index 04896d6..a689021 100644
> >>> --- a/sound/soc/omap/rx51.c
> >>> +++ b/sound/soc/omap/rx51.c
> >>> @@ -310,25 +310,27 @@ static int rx51_aic34_init(struct
> >>> snd_soc_pcm_runtime *rtd)
> >>>
> >>> return err;
> >>>
> >>> }
> >>>
> >>> - /* AV jack detection */
> >>> - err = snd_soc_jack_new(codec, "AV Jack",
> >>> - SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
> >>> - &rx51_av_jack);
> >>> - if (err) {
> >>> - dev_err(card->dev, "Failed to add AV Jack\n");
> >>> - return err;
> >>> - }
> >>> + if (!IS_ERR(pdata->jack_detection_gpio)) {
> >>> + /* AV jack detection */
> >>> + err = snd_soc_jack_new(codec, "AV Jack",
> >>> + SND_JACK_HEADSET |
SND_JACK_VIDEOOUT,
> >>> + &rx51_av_jack);
> >>> + if (err) {
> >>> + dev_err(card->dev, "Failed to add AV Jack\n");
> >>> + return err;
> >>> + }
> >>>
> >>> - /* prepare gpio for snd_soc_jack_add_gpios */
> >>> - rx51_av_jack_gpios[0].gpio =
> >>> desc_to_gpio(pdata->jack_detection_gpio);
> >>> - devm_gpiod_put(card->dev, pdata->jack_detection_gpio);
> >>> + /* prepare gpio for snd_soc_jack_add_gpios */
> >>> + rx51_av_jack_gpios[0].gpio =
> >>> desc_to_gpio(pdata->jack_detection_gpio);
> >>> + devm_gpiod_put(card->dev, pdata-
>jack_detection_gpio);
> >>>
> >>> - err = snd_soc_jack_add_gpios(&rx51_av_jack,
> >>> - ARRAY_SIZE(rx51_av_jack_gpios),
> >>> - rx51_av_jack_gpios);
> >>> - if (err) {
> >>> - dev_err(card->dev, "Failed to add GPIOs\n");
> >>> - return err;
> >>> + err = snd_soc_jack_add_gpios(&rx51_av_jack,
> >>> + ARRAY_SIZE(rx51_av_jack_gpios),
> >>> + rx51_av_jack_gpios);
> >>> + if (err) {
> >>> + dev_err(card->dev, "Failed to add GPIOs\n");
> >>> + return err;
> >>> + }
> >>>
> >>> }
> >>>
> >>> return err;
> >>>
> >>> @@ -336,8 +338,11 @@ static int rx51_aic34_init(struct
> >>> snd_soc_pcm_runtime *rtd)
> >>>
> >>> static int rx51_card_remove(struct snd_soc_card *card)
> >>> {
> >>>
> >>> - snd_soc_jack_free_gpios(&rx51_av_jack,
> >>> ARRAY_SIZE(rx51_av_jack_gpios), -
rx51_av_jack_gpios);
> >>> + struct rx51_audio_pdata *pdata =
> >>> snd_soc_card_get_drvdata(card); +
> >>> + if (!IS_ERR(pdata->jack_detection_gpio))
> >>> + snd_soc_jack_free_gpios(&rx51_av_jack,
> >>> ARRAY_SIZE(rx51_av_jack_gpios),
> >>> + rx51_av_jack_gpios);
> >>>
> >>> return 0;
> >>>
> >>> }
> >>>
> >>> @@ -470,8 +475,8 @@ static int rx51_soc_probe(struct
> >>> platform_device *pdev)
> >>>
> >>> pdata->jack_detection_gpio = devm_gpiod_get(card->dev,
> >>>
> >>> "jack-detection");
> >>>
> >>> if (IS_ERR(pdata->jack_detection_gpio)) {
> >>>
> >>> + /* Do not fail, qemu does not emulate jack
detection
> >>> gpio */
> >>>
> >>> dev_err(card->dev, "could not get jack detection
> >>> gpio\n");
> >>>
> >>> - return PTR_ERR(pdata->jack_detection_gpio);
> >>>
> >>> }
> >>>
> >>> pdata->eci_sw_gpio = devm_gpiod_get(card->dev,
> >>> "eci-switch");
--
Pali Rohár
pali.rohar at gmail.com
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