[alsa-devel] [PATCH v2] ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.

[Sam McNally]

Some members of the Google_Hatch family include a rt5682, but not a
speaker amp. When a speaker amp is also present, the first 10EC5682
entry in snd_soc_acpi_intel_cml_machines[] matches, finding the
MX98357A as well, resulting in the quirk_data field in the
snd_soc_acpi_mach being non-null. When only the rt5682 is present, the
second 10EC5682 entry is matched instead and quirk_data is left null.

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

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

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