linux-kernel - [PATCH 4.4 031/113] ALSA: hda: Add AZX_DCAPS_PM

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Message-Id: <20181008175532.364890213@linuxfoundation.org>
Date:   Mon,  8 Oct 2018 20:30:32 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Takashi Iwai <tiwai@...e.de>,
        Sasha Levin <alexander.levin@...rosoft.com>
Subject: [PATCH 4.4 031/113] ALSA: hda: Add AZX_DCAPS_PM_RUNTIME for AMD Raven Ridge

4.4-stable review patch.  If anyone has any objections, please let me know.

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

From: Kai-Heng Feng <kai.heng.feng@...onical.com>

[ Upstream commit 1adca4b0cd65c14cb8b8c9c257720385869c3d5f ]

This patch can make audio controller in AMD Raven Ridge gets runtime
suspended to D3, to save ~1W power when it's not in use.

Cc: Vijendar Mukunda <Vijendar.Mukunda@....com>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 sound/pci/hda/hda_intel.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/sound/pci/hda/hda_intel.c
+++ b/sound/pci/hda/hda_intel.c
@@ -2360,7 +2360,8 @@ static const struct pci_device_id azx_id
 	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
 	/* AMD Raven */
 	{ PCI_DEVICE(0x1022, 0x15e3),
-	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB },
+	  .driver_data = AZX_DRIVER_GENERIC | AZX_DCAPS_PRESET_ATI_SB |
+			 AZX_DCAPS_PM_RUNTIME },
 	/* ATI HDMI */
 	{ PCI_DEVICE(0x1002, 0x0002),
 	  .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS },