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From: Adam Thomson <DLG-Adam.Thomson.Opensource@dm.renesas.com>
To: Mark Brown <broonie@kernel.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Takashi Iwai <tiwai@suse.com>, Jaroslav Kysela <perex@perex.cz>
Cc: <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
	Support Opensource <DLG-Support.Opensource@lm.renesas.com>
Subject: [PATCH 1/2] ASoC: da7219: Fix pole orientation detection on certain headsets
Date: Mon, 30 May 2022 13:22:22 +0000	[thread overview]
Message-ID: <e0a627725c189dd50d6ce24571aed87fe2597395.1653916368.git.DLG-Adam.Thomson.Opensource@dm.renesas.com> (raw)
In-Reply-To: <cover.1653916368.git.DLG-Adam.Thomson.Opensource@dm.renesas.com>

It has been recently found that certain 'active' headsets can
be mis-detected as OMTP instead of CTIA, causing obvious issus
with audio quality. This relates to increased resistances which
negatively impacts the pole detection circuitry within the device.

To counter this, ground switches on both headphone channels are
available to enable/disable and these allow for the detection
process to operate as intended, even with active headsets. This
commit adds control of the ground switches to the AAD logic.

Signed-off-by: Adam Thomson <DLG-Adam.Thomson.Opensource@dm.renesas.com>
---
 sound/soc/codecs/da7219-aad.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
index 7998fdd3b378..e7d8c33e02cc 100644
--- a/sound/soc/codecs/da7219-aad.c
+++ b/sound/soc/codecs/da7219-aad.c
@@ -60,6 +60,9 @@ static void da7219_aad_btn_det_work(struct work_struct *work)
 	bool micbias_up = false;
 	int retries = 0;
 
+	/* Disable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
+
 	/* Drive headphones/lineout */
 	snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 			    DA7219_HP_L_AMP_OE_MASK,
@@ -153,6 +156,9 @@ static void da7219_aad_hptest_work(struct work_struct *work)
 		tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
 	}
 
+	/* Disable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
+
 	/* Ensure gain ramping at fastest rate */
 	gain_ramp_ctrl = snd_soc_component_read(component, DA7219_GAIN_RAMP_CTRL);
 	snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
@@ -444,6 +450,9 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
 			snd_soc_dapm_disable_pin(dapm, "Mic Bias");
 			snd_soc_dapm_sync(dapm);
 
+			/* Enable ground switch */
+			snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
+
 			/* Cancel any pending work */
 			cancel_work_sync(&da7219_aad->btn_det_work);
 			cancel_work_sync(&da7219_aad->hptest_work);
@@ -899,6 +908,9 @@ int da7219_aad_init(struct snd_soc_component *component)
 	snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 			    DA7219_BUTTON_CONFIG_MASK, 0);
 
+	/* Enable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
+
 	INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
 	INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
 
-- 
2.17.1


WARNING: multiple messages have this Message-ID (diff)
From: Adam Thomson <DLG-Adam.Thomson.Opensource@dm.renesas.com>
To: Mark Brown <broonie@kernel.org>,
	Liam Girdwood <lgirdwood@gmail.com>,
	Takashi Iwai <tiwai@suse.com>, Jaroslav Kysela <perex@perex.cz>
Cc: alsa-devel@alsa-project.org,
	Support Opensource <DLG-Support.Opensource@lm.renesas.com>,
	linux-kernel@vger.kernel.org
Subject: [PATCH 1/2] ASoC: da7219: Fix pole orientation detection on certain headsets
Date: Mon, 30 May 2022 13:22:22 +0000	[thread overview]
Message-ID: <e0a627725c189dd50d6ce24571aed87fe2597395.1653916368.git.DLG-Adam.Thomson.Opensource@dm.renesas.com> (raw)
In-Reply-To: <cover.1653916368.git.DLG-Adam.Thomson.Opensource@dm.renesas.com>

It has been recently found that certain 'active' headsets can
be mis-detected as OMTP instead of CTIA, causing obvious issus
with audio quality. This relates to increased resistances which
negatively impacts the pole detection circuitry within the device.

To counter this, ground switches on both headphone channels are
available to enable/disable and these allow for the detection
process to operate as intended, even with active headsets. This
commit adds control of the ground switches to the AAD logic.

Signed-off-by: Adam Thomson <DLG-Adam.Thomson.Opensource@dm.renesas.com>
---
 sound/soc/codecs/da7219-aad.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c
index 7998fdd3b378..e7d8c33e02cc 100644
--- a/sound/soc/codecs/da7219-aad.c
+++ b/sound/soc/codecs/da7219-aad.c
@@ -60,6 +60,9 @@ static void da7219_aad_btn_det_work(struct work_struct *work)
 	bool micbias_up = false;
 	int retries = 0;
 
+	/* Disable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
+
 	/* Drive headphones/lineout */
 	snd_soc_component_update_bits(component, DA7219_HP_L_CTRL,
 			    DA7219_HP_L_AMP_OE_MASK,
@@ -153,6 +156,9 @@ static void da7219_aad_hptest_work(struct work_struct *work)
 		tonegen_freq_hptest = cpu_to_le16(DA7219_AAD_HPTEST_RAMP_FREQ_INT_OSC);
 	}
 
+	/* Disable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00);
+
 	/* Ensure gain ramping at fastest rate */
 	gain_ramp_ctrl = snd_soc_component_read(component, DA7219_GAIN_RAMP_CTRL);
 	snd_soc_component_write(component, DA7219_GAIN_RAMP_CTRL, DA7219_GAIN_RAMP_RATE_X8);
@@ -444,6 +450,9 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void *data)
 			snd_soc_dapm_disable_pin(dapm, "Mic Bias");
 			snd_soc_dapm_sync(dapm);
 
+			/* Enable ground switch */
+			snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
+
 			/* Cancel any pending work */
 			cancel_work_sync(&da7219_aad->btn_det_work);
 			cancel_work_sync(&da7219_aad->hptest_work);
@@ -899,6 +908,9 @@ int da7219_aad_init(struct snd_soc_component *component)
 	snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1,
 			    DA7219_BUTTON_CONFIG_MASK, 0);
 
+	/* Enable ground switch */
+	snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01);
+
 	INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work);
 	INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work);
 
-- 
2.17.1


  reply	other threads:[~2022-05-30 13:22 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-30 13:22 [PATCH 0/2] ASoC: da7219: Small fixes for jack detection and removal Adam Thomson
2022-05-30 13:22 ` Adam Thomson
2022-05-30 13:22 ` Adam Thomson [this message]
2022-05-30 13:22   ` [PATCH 1/2] ASoC: da7219: Fix pole orientation detection on certain headsets Adam Thomson
2022-05-30 13:22 ` [PATCH 2/2] ASoC: da7219: cancel AAD related work earlier for jack removal Adam Thomson
2022-05-30 13:22   ` Adam Thomson
2022-05-31  8:18 ` [PATCH 0/2] ASoC: da7219: Small fixes for jack detection and removal Mark Brown
2022-05-31  8:18   ` Mark Brown

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