[PATCH v3] ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.

From: Sam McNally <sammc@chromium.org>
To: LKML <linux-kernel@vger.kernel.org>
Cc: Sam McNally <sammc@chromium.org>,
	Jaroslav Kysela <perex@perex.cz>,
	Liam Girdwood <liam.r.girdwood@linux.intel.com>,
	alsa-devel@alsa-project.org,
	Bard Liao <yung-chuan.liao@linux.intel.com>,
	Sathya Prakash M R <sathya.prakash.m.r@intel.com>,
	Mark Brown <broonie@kernel.org>,
	Cezary Rojewski <cezary.rojewski@intel.com>,
	Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
	Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
	Takashi Iwai <tiwai@suse.com>, Xun Zhang <xun2.zhang@intel.com>,
	Jie Yang <yang.jie@linux.intel.com>,
	Sathyanarayana Nujella <sathyanarayana.nujella@intel.com>
Subject: [PATCH v3] ASoC: Intel: sof_rt5682: Ignore the speaker amp when there isn't one.
Date: Fri,  3 Jan 2020 12:50:19 +1100	[thread overview]
Message-ID: <20200103124921.v3.1.Ib87c4a7fbb3fc818ea12198e291b87dc2d5bc8c2@changeid> (raw)

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

