linux-kernel - [PATCH 07/27] ALSA: hda/cs8409: Disable unsolicited responses during suspend

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Date:   Mon, 26 Jul 2021 18:46:20 +0100
From:   Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
To:     Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
CC:     <alsa-devel@...a-project.org>, <patches@...nsource.cirrus.com>,
        <linux-kernel@...r.kernel.org>,
        Stefan Binding <sbinding@...nsource.cirrus.com>
Subject: [PATCH 07/27] ALSA: hda/cs8409: Disable unsolicited responses during suspend

From: Stefan Binding <sbinding@...nsource.cirrus.com>

Ensure unsolicited responses cannot occur whilst the sub codecs are
being disabled.

Signed-off-by: Stefan Binding <sbinding@...nsource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@...nsource.cirrus.com>
---
 sound/pci/hda/patch_cs8409.c | 26 ++++++++++++++------------
 1 file changed, 14 insertions(+), 12 deletions(-)

diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index 1745f8b188c6..4906d2913603 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -563,12 +563,26 @@ static void cs8409_jack_unsol_event(struct hda_codec *codec, unsigned int res)
 	}
 }
 
+/* Enable/Disable Unsolicited Response for gpio(s) 3,4 */
+static void cs8409_enable_ur(struct hda_codec *codec, int flag)
+{
+	/* GPIO4 INT# and GPIO3 WAKE# */
+	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK,
+			    flag ? CS8409_CS42L42_INT : 0);
+
+	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_UNSOLICITED_ENABLE,
+			    flag ? AC_UNSOL_ENABLED : 0);
+
+}
+
 #ifdef CONFIG_PM
 /* Manage PDREF, when transition to D3hot */
 static int cs8409_suspend(struct hda_codec *codec)
 {
 	struct cs8409_spec *spec = codec->spec;
 
+	cs8409_enable_ur(codec, 0);
+
 	mutex_lock(&spec->cs8409_i2c_mux);
 	/* Power down CS42L42 ASP/EQ/MIX/HP */
 	cs8409_i2c_write(codec, CS42L42_I2C_ADDR, 0x1101, 0xfe, 1);
@@ -582,18 +596,6 @@ static int cs8409_suspend(struct hda_codec *codec)
 }
 #endif
 
-/* Enable/Disable Unsolicited Response for gpio(s) 3,4 */
-static void cs8409_enable_ur(struct hda_codec *codec, int flag)
-{
-	/* GPIO4 INT# and GPIO3 WAKE# */
-	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK,
-			    flag ? CS8409_CS42L42_INT : 0);
-
-	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_UNSOLICITED_ENABLE,
-			    flag ? AC_UNSOL_ENABLED : 0);
-
-}
-
 /* Vendor specific HW configuration
  * PLL, ASP, I2C, SPI, GPIOs, DMIC etc...
  */
-- 
2.25.1