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Subject[PATCH v3] ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.
Date
Some members of the Google_Hatch family include a rt5682 jack codec, but
no speaker amplifier. This uses the same driver (sof_rt5682) as a
combination of rt5682 jack codec and max98357a speaker amplifier. Within
the sof_rt5682 driver, these cases are not currently distinguishable,
relying on a DMI quirk to decide the configuration. This causes an
incorrect configuration when only the rt5682 is present on a
Google_Hatch device.

For CML, the jack codec is used as the primary key when matching,
with a possible speaker amplifier described in quirk_data. The two cases
of interest are the second and third 10EC5682 entries in
snd_soc_acpi_intel_cml_machines[]. The second entry matches the
combination of rt5682 and max98357a, resulting in the quirk_data field
in the snd_soc_acpi_mach being non-null, pointing at
max98357a_spk_codecs, the snd_soc_acpi_codecs for the matched speaker
amplifier. The third entry matches just the rt5682, resulting in a null
quirk_data.

The sof_rt5682 driver's DMI data matching identifies that a speaker
amplifier is present for all Google_Hatch family devices. Detect cases
where there is no speaker amplifier by checking for a null quirk_data in
the snd_soc_acpi_mach and remove the speaker amplifier bit in that case.

Signed-off-by: Sam McNally <sammc@chromium.org>
---

Changes in v3:
- Rewrote commit message to refer to correct
snd_soc_acpi_intel_cml_machines[] entries and better describe the
change

Changes in v2:
- Added details about the relevant ACPI matches to the description

sound/soc/intel/boards/sof_rt5682.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/sound/soc/intel/boards/sof_rt5682.c b/sound/soc/intel/boards/sof_rt5682.c
index ad8a2b4bc709..8a13231dee15 100644
--- a/sound/soc/intel/boards/sof_rt5682.c
+++ b/sound/soc/intel/boards/sof_rt5682.c
@@ -603,6 +603,14 @@ static int sof_audio_probe(struct platform_device *pdev)

dmi_check_system(sof_rt5682_quirk_table);

+ mach = (&pdev->dev)->platform_data;
+
+ /* A speaker amp might not be present when the quirk claims one is.
+ * Detect this via whether the machine driver match includes quirk_data.
+ */
+ if ((sof_rt5682_quirk & SOF_SPEAKER_AMP_PRESENT) && !mach->quirk_data)
+ sof_rt5682_quirk &= ~SOF_SPEAKER_AMP_PRESENT;
+
if (soc_intel_is_byt() || soc_intel_is_cht()) {
is_legacy_cpu = 1;
dmic_be_num = 0;
@@ -663,7 +671,6 @@ static int sof_audio_probe(struct platform_device *pdev)
INIT_LIST_HEAD(&ctx->hdmi_pcm_list);

sof_audio_card_rt5682.dev = &pdev->dev;
- mach = (&pdev->dev)->platform_data;

/* set platform name for each dailink */
ret = snd_soc_fixup_dai_links_platform_name(&sof_audio_card_rt5682,
--
2.24.1.735.g03f4e72817-goog
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