* [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210
@ 2011-07-13 11:22 Giridhar Maruthy
2011-07-13 11:48 ` Naveen Krishna Ch
` (2 more replies)
0 siblings, 3 replies; 4+ messages in thread
From: Giridhar Maruthy @ 2011-07-13 11:22 UTC (permalink / raw)
To: naveenkrishna.ch, jassisinghbrar, linux-samsung-soc, dp,
Kyung-Kwee.Ryu, broonie
Cc: Giridhar Maruthy
Using 256fs or 512fs will result in distortion of 24-bit
audio samples. This is because the lrclk generated is not
proper. Using 384 fs generates proper output.
Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org>
---
sound/soc/samsung/smdk_wm8994.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)
diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
index e7c1009..45fbe2b 100644
--- a/sound/soc/samsung/smdk_wm8994.c
+++ b/sound/soc/samsung/smdk_wm8994.c
@@ -8,6 +8,7 @@
*/
#include "../codecs/wm8994.h"
+#include <sound/pcm_params.h>
/*
* Default CFG switch settings to use this driver:
@@ -44,7 +45,9 @@ static int smdk_hw_params(struct snd_pcm_substream *substream,
int ret;
/* AIF1CLK should be >=3MHz for optimal performance */
- if (params_rate(params) == 8000 || params_rate(params) == 11025)
+ if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
+ pll_out = params_rate(params) * 384;
+ else if (params_rate(params) == 8000 || params_rate(params) == 11025)
pll_out = params_rate(params) * 512;
else
pll_out = params_rate(params) * 256;
--
1.7.4.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210
2011-07-13 11:22 [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210 Giridhar Maruthy
@ 2011-07-13 11:48 ` Naveen Krishna Ch
2011-07-13 14:06 ` Jassi Brar
2011-07-13 23:26 ` Mark Brown
2 siblings, 0 replies; 4+ messages in thread
From: Naveen Krishna Ch @ 2011-07-13 11:48 UTC (permalink / raw)
To: Giridhar Maruthy
Cc: jassisinghbrar, linux-samsung-soc, dp, Kyung-Kwee.Ryu, broonie
It works fine with this change.
On 13 July 2011 16:52, Giridhar Maruthy <giridhar.maruthy@linaro.org> wrote:
> Using 256fs or 512fs will result in distortion of 24-bit
> audio samples. This is because the lrclk generated is not
> proper. Using 384 fs generates proper output.
>
> Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org>
> ---
> sound/soc/samsung/smdk_wm8994.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
> index e7c1009..45fbe2b 100644
> --- a/sound/soc/samsung/smdk_wm8994.c
> +++ b/sound/soc/samsung/smdk_wm8994.c
> @@ -8,6 +8,7 @@
> */
>
> #include "../codecs/wm8994.h"
> +#include <sound/pcm_params.h>
>
> /*
> * Default CFG switch settings to use this driver:
> @@ -44,7 +45,9 @@ static int smdk_hw_params(struct snd_pcm_substream *substream,
> int ret;
>
> /* AIF1CLK should be >=3MHz for optimal performance */
> - if (params_rate(params) == 8000 || params_rate(params) == 11025)
> + if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
> + pll_out = params_rate(params) * 384;
> + else if (params_rate(params) == 8000 || params_rate(params) == 11025)
> pll_out = params_rate(params) * 512;
> else
> pll_out = params_rate(params) * 256;
> --
> 1.7.4.1
>
>
--
Shine bright,
(: Nav :)
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210
2011-07-13 11:22 [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210 Giridhar Maruthy
2011-07-13 11:48 ` Naveen Krishna Ch
@ 2011-07-13 14:06 ` Jassi Brar
2011-07-13 23:26 ` Mark Brown
2 siblings, 0 replies; 4+ messages in thread
From: Jassi Brar @ 2011-07-13 14:06 UTC (permalink / raw)
To: Giridhar Maruthy
Cc: naveenkrishna.ch, linux-samsung-soc, dp, Kyung-Kwee.Ryu, broonie
On Wed, Jul 13, 2011 at 4:52 PM, Giridhar Maruthy
<giridhar.maruthy@linaro.org> wrote:
> Using 256fs or 512fs will result in distortion of 24-bit
> audio samples. This is because the lrclk generated is not
> proper. Using 384 fs generates proper output.
>
> Signed-off-by: Giridhar Maruthy <giridhar.maruthy@linaro.org>
> ---
> sound/soc/samsung/smdk_wm8994.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/sound/soc/samsung/smdk_wm8994.c b/sound/soc/samsung/smdk_wm8994.c
> index e7c1009..45fbe2b 100644
> --- a/sound/soc/samsung/smdk_wm8994.c
> +++ b/sound/soc/samsung/smdk_wm8994.c
> @@ -8,6 +8,7 @@
> */
>
> #include "../codecs/wm8994.h"
> +#include <sound/pcm_params.h>
>
> /*
> * Default CFG switch settings to use this driver:
> @@ -44,7 +45,9 @@ static int smdk_hw_params(struct snd_pcm_substream *substream,
> int ret;
>
> /* AIF1CLK should be >=3MHz for optimal performance */
> - if (params_rate(params) == 8000 || params_rate(params) == 11025)
> + if (params_format(params) == SNDRV_PCM_FORMAT_S24_LE)
> + pll_out = params_rate(params) * 384;
> + else if (params_rate(params) == 8000 || params_rate(params) == 11025)
> pll_out = params_rate(params) * 512;
> else
> pll_out = params_rate(params) * 256;
It might be a good idea to maintain a matrix of sample rates and sizes
tested cleanly.
Thanks,
Jassi
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210
2011-07-13 11:22 [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210 Giridhar Maruthy
2011-07-13 11:48 ` Naveen Krishna Ch
2011-07-13 14:06 ` Jassi Brar
@ 2011-07-13 23:26 ` Mark Brown
2 siblings, 0 replies; 4+ messages in thread
From: Mark Brown @ 2011-07-13 23:26 UTC (permalink / raw)
To: Giridhar Maruthy
Cc: naveenkrishna.ch, jassisinghbrar, linux-samsung-soc, dp, Kyung-Kwee.Ryu
On Wed, Jul 13, 2011 at 04:52:06PM +0530, Giridhar Maruthy wrote:
> Using 256fs or 512fs will result in distortion of 24-bit
> audio samples. This is because the lrclk generated is not
> proper. Using 384 fs generates proper output.
Applied, thanks.
^ permalink raw reply [flat|nested] 4+ messages in thread
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2011-07-13 11:22 [PATCH] ASoC: SAMSUNG: 24-bit audio playback on Exynos4210 Giridhar Maruthy
2011-07-13 11:48 ` Naveen Krishna Ch
2011-07-13 14:06 ` Jassi Brar
2011-07-13 23:26 ` Mark Brown
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