From c076e201d5e16ffa7bcd01edc82cf5a1f9ce0721 Mon Sep 17 00:00:00 2001
From: Stefan Binding <sbinding@opensource.cirrus.com>
Date: Wed, 11 Aug 2021 19:56:46 +0100
Subject: [PATCH] ALSA: hda/cs8409: Support multiple sub_codecs for Suspend/Resume/Unsol events
Git-commit: c076e201d5e16ffa7bcd01edc82cf5a1f9ce0721
Patch-mainline: v5.15-rc1
References: bsc#1192354

Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210811185654.6837-20-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>

---
 sound/pci/hda/patch_cs8409.c | 41 ++++++++++++++++++++++++------------
 1 file changed, 28 insertions(+), 13 deletions(-)

diff --git a/sound/pci/hda/patch_cs8409.c b/sound/pci/hda/patch_cs8409.c
index 9d1a457c2696..5b3221ddc51b 100644
--- a/sound/pci/hda/patch_cs8409.c
+++ b/sound/pci/hda/patch_cs8409.c
@@ -388,16 +388,21 @@ static int cs8409_build_controls(struct hda_codec *codec)
 	return 0;
 }
 
-/* Enable/Disable Unsolicited Response for gpio(s) 3,4 */
+/* Enable/Disable Unsolicited Response */
 static void cs8409_enable_ur(struct hda_codec *codec, int flag)
 {
-	/* GPIO4 INT# and GPIO3 WAKE# */
+	struct cs8409_spec *spec = codec->spec;
+	unsigned int ur_gpios = 0;
+	int i;
+
+	for (i = 0; i < spec->num_scodecs; i++)
+		ur_gpios |= spec->scodecs[i]->irq_mask;
+
 	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_UNSOLICITED_RSP_MASK,
-			    flag ? CS8409_CS42L42_INT : 0);
+			    flag ? ur_gpios : 0);
 
 	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_UNSOLICITED_ENABLE,
 			    flag ? AC_UNSOL_ENABLED : 0);
-
 }
 
 static void cs8409_fix_caps(struct hda_codec *codec, unsigned int nid)
@@ -629,6 +634,8 @@ static int cs42l42_jack_unsol_event(struct sub_codec *cs42l42)
 
 static void cs42l42_resume(struct sub_codec *cs42l42)
 {
+	struct hda_codec *codec = cs42l42->codec;
+	unsigned int gpio_data;
 	struct cs8409_i2c_param irq_regs[] = {
 		{ 0x1308, 0x00 },
 		{ 0x1309, 0x00 },
@@ -636,6 +643,12 @@ static void cs42l42_resume(struct sub_codec *cs42l42)
 		{ 0x130F, 0x00 },
 	};
 
+	/* Bring CS42L42 out of Reset */
+	gpio_data = snd_hda_codec_read(codec, CS8409_PIN_AFG, 0, AC_VERB_GET_GPIO_DATA, 0);
+	gpio_data |= cs42l42->reset_gpio;
+	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, gpio_data);
+	usleep_range(10000, 15000);
+
 	cs42l42->suspended = 0;
 
 	/* Initialize CS42L42 companion codec */
@@ -661,10 +674,18 @@ static void cs42l42_resume(struct sub_codec *cs42l42)
 #ifdef CONFIG_PM
 static void cs42l42_suspend(struct sub_codec *cs42l42)
 {
+	struct hda_codec *codec = cs42l42->codec;
+	unsigned int gpio_data;
+
 	/* Power down CS42L42 ASP/EQ/MIX/HP */
 	cs8409_i2c_write(cs42l42, 0x1101, 0xfe);
 	cs42l42->suspended = 1;
 	cs42l42->last_page = 0;
+
+	/* Put CS42L42 into Reset */
+	gpio_data = snd_hda_codec_read(codec, CS8409_PIN_AFG, 0, AC_VERB_GET_GPIO_DATA, 0);
+	gpio_data &= ~cs42l42->reset_gpio;
+	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, gpio_data);
 }
 #endif
 
@@ -726,13 +747,12 @@ static void cs8409_cs42l42_jack_unsol_event(struct hda_codec *codec, unsigned in
 static int cs8409_cs42l42_suspend(struct hda_codec *codec)
 {
 	struct cs8409_spec *spec = codec->spec;
+	int i;
 
 	cs8409_enable_ur(codec, 0);
 
-	cs42l42_suspend(spec->scodecs[CS8409_CODEC0]);
-
-	/* Assert CS42L42 RTS# line */
-	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, 0);
+	for (i = 0; i < spec->num_scodecs; i++)
+		cs42l42_suspend(spec->scodecs[i]);
 
 	/* Cancel i2c clock disable timer, and disable clock if left enabled */
 	cancel_delayed_work_sync(&spec->i2c_clk_work);
@@ -775,11 +795,6 @@ static void cs8409_cs42l42_hw_init(struct hda_codec *codec)
 	if (codec->fixup_id == CS8409_WARLOCK || codec->fixup_id == CS8409_CYBORG)
 		cs8409_vendor_coef_set(codec, 0x09, 0x0003);
 
-	/* Release RTS# line */
-	snd_hda_codec_write(codec, CS8409_PIN_AFG, 0, AC_VERB_SET_GPIO_DATA, CS8409_CS42L42_RESET);
-	/* wait ~10ms */
-	usleep_range(10000, 15000);
-
 	cs42l42_resume(cs42l42);
 
 	/* Enable Unsolicited Response */
-- 
2.26.2