From: Cheng-Yi Chiang <cychiang@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: Mark Brown <broonie@kernel.org>, Takashi Iwai <tiwai@suse.com>,
Liam Girdwood <lgirdwood@gmail.com>,
Jaroslav Kysela <perex@perex.cz>,
Heiko Stuebner <heiko@sntech.de>,
dianders@chromium.org, dgreid@chromium.org, tzungbi@chromium.org,
mka@chromium.org, alsa-devel@alsa-project.org,
linux-arm-kernel@lists.infradead.org,
linux-rockchip@lists.infradead.org,
Cheng-Yi Chiang <cychiang@chromium.org>
Subject: [PATCH] Revert "ASoC: rockchip: i2s: Support mono capture"
Date: Fri, 26 Jul 2019 12:42:02 +0800 [thread overview]
Message-ID: <20190726044202.26866-1-cychiang@chromium.org> (raw)
This reverts commit db51707b9c9aeedd310ebce60f15d5bb006567e0.
Previous discussion in
https://patchwork.kernel.org/patch/10147153/
explains the issue of the patch.
While device is configured as 1-ch, hardware is still
generating a 2-ch stream.
When user space reads the data and assumes it is a 1-ch stream,
the rate will be slower by 2x.
Revert the change so 1-ch is not supported.
User space can selectively take one channel data out of two channel
if 1-ch is preferred.
Currently, both channels record identical data.
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
sound/soc/rockchip/rockchip_i2s.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 0a34d0eb8dba..88ebaf6e1880 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -326,7 +326,6 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
val |= I2S_CHN_4;
break;
case 2:
- case 1:
val |= I2S_CHN_2;
break;
default:
@@ -459,7 +458,7 @@ static struct snd_soc_dai_driver rockchip_i2s_dai = {
},
.capture = {
.stream_name = "Capture",
- .channels_min = 1,
+ .channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = (SNDRV_PCM_FMTBIT_S8 |
@@ -659,7 +658,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
}
if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
- if (val >= 1 && val <= 8)
+ if (val >= 2 && val <= 8)
soc_dai->capture.channels_max = val;
}
--
2.22.0.709.g102302147b-goog
WARNING: multiple messages have this Message-ID (diff)
From: Cheng-Yi Chiang <cychiang@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: alsa-devel@alsa-project.org, dianders@chromium.org,
Heiko Stuebner <heiko@sntech.de>,
Liam Girdwood <lgirdwood@gmail.com>,
Takashi Iwai <tiwai@suse.com>,
tzungbi@chromium.org, Jaroslav Kysela <perex@perex.cz>,
linux-rockchip@lists.infradead.org,
Mark Brown <broonie@kernel.org>,
dgreid@chromium.org, mka@chromium.org,
linux-arm-kernel@lists.infradead.org,
Cheng-Yi Chiang <cychiang@chromium.org>
Subject: [PATCH] Revert "ASoC: rockchip: i2s: Support mono capture"
Date: Fri, 26 Jul 2019 12:42:02 +0800 [thread overview]
Message-ID: <20190726044202.26866-1-cychiang@chromium.org> (raw)
This reverts commit db51707b9c9aeedd310ebce60f15d5bb006567e0.
Previous discussion in
https://patchwork.kernel.org/patch/10147153/
explains the issue of the patch.
While device is configured as 1-ch, hardware is still
generating a 2-ch stream.
When user space reads the data and assumes it is a 1-ch stream,
the rate will be slower by 2x.
Revert the change so 1-ch is not supported.
User space can selectively take one channel data out of two channel
if 1-ch is preferred.
Currently, both channels record identical data.
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
sound/soc/rockchip/rockchip_i2s.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 0a34d0eb8dba..88ebaf6e1880 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -326,7 +326,6 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
val |= I2S_CHN_4;
break;
case 2:
- case 1:
val |= I2S_CHN_2;
break;
default:
@@ -459,7 +458,7 @@ static struct snd_soc_dai_driver rockchip_i2s_dai = {
},
.capture = {
.stream_name = "Capture",
- .channels_min = 1,
+ .channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = (SNDRV_PCM_FMTBIT_S8 |
@@ -659,7 +658,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
}
if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
- if (val >= 1 && val <= 8)
+ if (val >= 2 && val <= 8)
soc_dai->capture.channels_max = val;
}
--
2.22.0.709.g102302147b-goog
WARNING: multiple messages have this Message-ID (diff)
From: Cheng-Yi Chiang <cychiang@chromium.org>
To: linux-kernel@vger.kernel.org
Cc: alsa-devel@alsa-project.org, dianders@chromium.org,
Heiko Stuebner <heiko@sntech.de>,
Liam Girdwood <lgirdwood@gmail.com>,
Takashi Iwai <tiwai@suse.com>,
tzungbi@chromium.org, Jaroslav Kysela <perex@perex.cz>,
linux-rockchip@lists.infradead.org,
Mark Brown <broonie@kernel.org>,
dgreid@chromium.org, mka@chromium.org,
linux-arm-kernel@lists.infradead.org,
Cheng-Yi Chiang <cychiang@chromium.org>
Subject: [PATCH] Revert "ASoC: rockchip: i2s: Support mono capture"
Date: Fri, 26 Jul 2019 12:42:02 +0800 [thread overview]
Message-ID: <20190726044202.26866-1-cychiang@chromium.org> (raw)
This reverts commit db51707b9c9aeedd310ebce60f15d5bb006567e0.
Previous discussion in
https://patchwork.kernel.org/patch/10147153/
explains the issue of the patch.
While device is configured as 1-ch, hardware is still
generating a 2-ch stream.
When user space reads the data and assumes it is a 1-ch stream,
the rate will be slower by 2x.
Revert the change so 1-ch is not supported.
User space can selectively take one channel data out of two channel
if 1-ch is preferred.
Currently, both channels record identical data.
Signed-off-by: Cheng-Yi Chiang <cychiang@chromium.org>
---
sound/soc/rockchip/rockchip_i2s.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/sound/soc/rockchip/rockchip_i2s.c b/sound/soc/rockchip/rockchip_i2s.c
index 0a34d0eb8dba..88ebaf6e1880 100644
--- a/sound/soc/rockchip/rockchip_i2s.c
+++ b/sound/soc/rockchip/rockchip_i2s.c
@@ -326,7 +326,6 @@ static int rockchip_i2s_hw_params(struct snd_pcm_substream *substream,
val |= I2S_CHN_4;
break;
case 2:
- case 1:
val |= I2S_CHN_2;
break;
default:
@@ -459,7 +458,7 @@ static struct snd_soc_dai_driver rockchip_i2s_dai = {
},
.capture = {
.stream_name = "Capture",
- .channels_min = 1,
+ .channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_8000_192000,
.formats = (SNDRV_PCM_FMTBIT_S8 |
@@ -659,7 +658,7 @@ static int rockchip_i2s_probe(struct platform_device *pdev)
}
if (!of_property_read_u32(node, "rockchip,capture-channels", &val)) {
- if (val >= 1 && val <= 8)
+ if (val >= 2 && val <= 8)
soc_dai->capture.channels_max = val;
}
--
2.22.0.709.g102302147b-goog
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2019-07-26 4:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-26 4:42 Cheng-Yi Chiang [this message]
2019-07-26 4:42 ` [PATCH] Revert "ASoC: rockchip: i2s: Support mono capture" Cheng-Yi Chiang
2019-07-26 4:42 ` Cheng-Yi Chiang
2019-07-26 11:17 ` Mark Brown
2019-07-26 11:17 ` Mark Brown
2019-07-26 12:10 ` Cheng-yi Chiang
2019-07-26 12:10 ` Cheng-yi Chiang
2019-07-26 12:10 ` Cheng-yi Chiang
2019-07-26 12:12 ` Applied "ASoC: rockchip: Fix mono capture" to the asoc tree Mark Brown
2019-07-26 12:12 ` Mark Brown
2019-07-26 12:12 ` Mark Brown
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190726044202.26866-1-cychiang@chromium.org \
--to=cychiang@chromium.org \
--cc=alsa-devel@alsa-project.org \
--cc=broonie@kernel.org \
--cc=dgreid@chromium.org \
--cc=dianders@chromium.org \
--cc=heiko@sntech.de \
--cc=lgirdwood@gmail.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-rockchip@lists.infradead.org \
--cc=mka@chromium.org \
--cc=perex@perex.cz \
--cc=tiwai@suse.com \
--cc=tzungbi@chromium.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.