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From: "Subhransu S. Prusty" <subhransu.s.prusty@intel.com>
To: alsa-devel@alsa-project.org
Cc: tiwai@suse.de, lgirdwood@gmail.com, patches.audio@intel.com,
	broonie@kernel.org, Vinod Koul <vinod.koul@intel.com>,
	"Subhransu S. Prusty" <subhransu.s.prusty@intel.com>
Subject: [PATCH v3 2/9] ALSA: hda - add helper to get channels from cap bits
Date: Thu, 14 Apr 2016 10:07:29 +0530	[thread overview]
Message-ID: <1460608656-8860-3-git-send-email-subhransu.s.prusty@intel.com> (raw)
In-Reply-To: <1460608656-8860-1-git-send-email-subhransu.s.prusty@intel.com>

This helper is copied from legacy hda driver.

Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
---
 sound/hda/local.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sound/hda/local.h b/sound/hda/local.h
index d692f41..0d5bb15 100644
--- a/sound/hda/local.h
+++ b/sound/hda/local.h
@@ -16,6 +16,16 @@ static inline int get_wcaps_type(unsigned int wcaps)
 	return (wcaps & AC_WCAP_TYPE) >> AC_WCAP_TYPE_SHIFT;
 }
 
+static inline unsigned int get_wcaps_channels(u32 wcaps)
+{
+	unsigned int chans;
+
+	chans = (wcaps & AC_WCAP_CHAN_CNT_EXT) >> 13;
+	chans = (chans + 1) * 2;
+
+	return chans;
+}
+
 extern const struct attribute_group *hdac_dev_attr_groups[];
 int hda_widget_sysfs_init(struct hdac_device *codec);
 void hda_widget_sysfs_exit(struct hdac_device *codec);
-- 
1.9.1

  parent reply	other threads:[~2016-04-14  4:38 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-14  4:37 [PATCH v3 0/9] ASoC: hdac_hdmi: Add multichannel support Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 1/9] ASoC: hdac_hdmi: parse eld for channel map capability Subhransu S. Prusty
2016-04-14  4:37 ` Subhransu S. Prusty [this message]
2016-04-28 17:48   ` Applied "ALSA: hda - add helper to get channels from cap bits" to the asoc tree Mark Brown
2016-04-14  4:37 ` [PATCH v3 3/9] ASoC: hdac_hdmi: Add multichannel support Subhransu S. Prusty
2016-04-28 17:55   ` Applied "ASoC: hdac_hdmi: Add multichannel support" to the asoc tree Mark Brown
2016-04-14  4:37 ` [PATCH v3 4/9] ASoC: skl_rt286: Fix to support hdmi channel map support Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 5/9] ASoC: Intel: boards: Update skl_nau88l25_max98357a driver to support chmap Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 6/9] ASoC: Intel: boards: Update skl_nau88l25_ssm4567 " Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 7/9] ASoC: hdac_hdmi: Register chmap controls and ops Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 8/9] ASoC: Intel: Skylake: Add multichannel support for HDMI Subhransu S. Prusty
2016-04-14  4:37 ` [PATCH v3 9/9] ASoC: Intel: Skylake: Update channel map based on runtime params Subhransu S. Prusty
2016-04-26  4:49 ` [PATCH v3 0/9] ASoC: hdac_hdmi: Add multichannel support Subhransu S. Prusty
2016-04-26 11:09   ` Mark Brown
2016-04-26 11:47     ` Takashi Iwai
2016-04-26 11:54       ` Subhransu S. Prusty

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