linux-kernel - [27/98] ALSA: ice1724 - Patch for suspend/resume for ESI Juli@

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Date:	Tue, 26 Jan 2010 15:33:53 -0800
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Aleksey Kunitskiy <alexey.kv@...il.com>,
	Takashi Iwai <tiwai@...e.de>
Subject: [27/98] ALSA: ice1724 - Patch for suspend/resume for ESI Juli@

2.6.32-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Aleksey Kunitskiy <alexey.kv@...il.com>

commit 50d40f187f9182ee8caa1b83f80a0e11e2226baa upstream.

Add proper suspend/resume code for Juli@ cards. Based on ice1724
suspend/resume work of Igor Chernyshev.
Fixes bug https://bugtrack.alsa-project.org/alsa-bug/view.php?id=4413
Tested on linux-2.6.31.6

Signed-off-by: Aleksey Kunitskiy <alexey.kv@...il.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 sound/pci/ice1712/juli.c |   32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

--- a/sound/pci/ice1712/juli.c
+++ b/sound/pci/ice1712/juli.c
@@ -504,6 +504,31 @@ static int __devinit juli_add_controls(s
 }
 
 /*
+ * suspend/resume
+ * */
+
+#ifdef CONFIG_PM
+static int juli_resume(struct snd_ice1712 *ice)
+{
+	struct snd_akm4xxx *ak = ice->akm;
+	struct juli_spec *spec = ice->spec;
+	/* akm4358 un-reset, un-mute */
+	snd_akm4xxx_reset(ak, 0);
+	/* reinit ak4114 */
+	snd_ak4114_reinit(spec->ak4114);
+	return 0;
+}
+
+static int juli_suspend(struct snd_ice1712 *ice)
+{
+	struct snd_akm4xxx *ak = ice->akm;
+	/* akm4358 reset and soft-mute */
+	snd_akm4xxx_reset(ak, 1);
+	return 0;
+}
+#endif
+
+/*
  * initialize the chip
  */
 
@@ -646,6 +671,13 @@ static int __devinit juli_init(struct sn
 	ice->set_spdif_clock = juli_set_spdif_clock;
 
 	ice->spdif.ops.open = juli_spdif_in_open;
+
+#ifdef CONFIG_PM
+	ice->pm_resume = juli_resume;
+	ice->pm_suspend = juli_suspend;
+	ice->pm_suspend_enabled = 1;
+#endif
+
 	return 0;
 }
 


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