From: Maxime Ripard <maxime.ripard@bootlin.com>
To: codekipper@gmail.com
Cc: alsa-devel@alsa-project.org, linux-sunxi@googlegroups.com,
linux-kernel@vger.kernel.org, lgirdwood@gmail.com,
be17068@iperbole.bo.it, wens@csie.org, broonie@kernel.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v4 8/9] ASoc: sun4i-i2s: Add 20, 24 and 32 bit support
Date: Tue, 4 Jun 2019 10:19:38 +0200 [thread overview]
Message-ID: <20190604081938.npye7brtjv7c7noj@flea> (raw)
In-Reply-To: <20190603174735.21002-9-codekipper@gmail.com>
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On Mon, Jun 03, 2019 at 07:47:34PM +0200, codekipper@gmail.com wrote:
> From: Marcus Cooper <codekipper@gmail.com>
>
> Extend the functionality of the driver to include support of 20 and
> 24 bits per sample for the earlier SoCs.
>
> Newer SoCs can also handle 32bit samples.
>
> Signed-off-by: Marcus Cooper <codekipper@gmail.com>
> ---
> sound/soc/sunxi/sun4i-i2s.c | 34 +++++++++++++++++++++++++++++++---
> 1 file changed, 31 insertions(+), 3 deletions(-)
>
> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
> index 3549a87ed9e9..351b8021173b 100644
> --- a/sound/soc/sunxi/sun4i-i2s.c
> +++ b/sound/soc/sunxi/sun4i-i2s.c
> @@ -428,6 +428,11 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
> case 16:
> width = DMA_SLAVE_BUSWIDTH_2_BYTES;
> break;
> + case 20:
> + case 24:
> + case 32:
> + width = DMA_SLAVE_BUSWIDTH_4_BYTES;
> + break;
Doesn't this test the physical width? If so, then I'm not sure that 20
even exists, and that we can support 24.
> default:
> dev_err(dai->dev, "Unsupported physical sample width: %d\n",
> params_physical_width(params));
> @@ -440,7 +445,18 @@ static int sun4i_i2s_hw_params(struct snd_pcm_substream *substream,
> sr = 0;
> wss = 0;
> break;
> -
> + case 20:
> + sr = 1;
> + wss = 1;
> + break;
> + case 24:
> + sr = 2;
> + wss = 2;
> + break;
> + case 32:
> + sr = 4;
> + wss = 4;
> + break;
This doesn't really works, wss being the slot size, and you can have a
different slot size and sample size. I have a patch that reworks this,
I'll send it.
Maxime
--
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2019-06-04 8:20 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-03 17:47 [PATCH v4 0/9]ASoC: sun4i-i2s: Updates to the driver codekipper
2019-06-03 17:47 ` [PATCH v4 1/9] ASoC: sun4i-i2s: Fix sun8i tx channel offset mask codekipper
2019-06-04 7:34 ` Maxime Ripard
2019-06-04 7:38 ` [linux-sunxi] " Chen-Yu Tsai
2019-06-04 8:15 ` Code Kipper
2019-06-04 14:58 ` Applied "ASoC: sun4i-i2s: Fix sun8i tx channel offset mask" to the asoc tree Mark Brown
2019-06-03 17:47 ` [PATCH v4 2/9] ASoC: sun4i-i2s: Add offset to RX channel select codekipper
2019-06-04 7:36 ` Maxime Ripard
2019-06-04 7:39 ` [linux-sunxi] " Chen-Yu Tsai
2019-06-04 14:58 ` Applied "ASoC: sun4i-i2s: Add offset to RX channel select" to the asoc tree Mark Brown
2019-06-03 17:47 ` [PATCH v4 3/9] ASoC: sun4i-i2s: Add regmap field to sign extend sample codekipper
2019-06-04 7:43 ` Maxime Ripard
2019-06-04 7:53 ` [linux-sunxi] " Chen-Yu Tsai
2019-06-04 11:46 ` Code Kipper
2019-06-03 17:47 ` [PATCH v4 4/9] ASoC: sun4i-i2s: Reduce quirks for sun8i-h3 codekipper
2019-06-04 7:46 ` Maxime Ripard
2019-06-04 9:33 ` Code Kipper
2019-06-03 17:47 ` [PATCH v4 5/9] ASoC: sun4i-i2s: Add set_tdm_slot functionality codekipper
2019-06-04 7:49 ` Maxime Ripard
2019-06-03 17:47 ` [PATCH v4 6/9] ASoC: sun4i-i2s: Add multi-lane functionality codekipper
2019-06-04 7:58 ` Maxime Ripard
2019-06-04 8:43 ` Code Kipper
2019-06-04 9:02 ` [linux-sunxi] " Christopher Obbard
2019-06-04 9:38 ` Code Kipper
2019-07-30 17:57 ` Jernej Škrabec
2019-07-31 12:29 ` Maxime Ripard
2019-08-01 5:31 ` Jernej Škrabec
2019-08-06 6:22 ` Chen-Yu Tsai
2019-08-12 10:02 ` Maxime Ripard
2019-06-03 17:47 ` [PATCH v4 7/9] ASoC: sun4i-i2s: Add multichannel functionality codekipper
2019-06-03 17:47 ` [PATCH v4 8/9] ASoc: sun4i-i2s: Add 20, 24 and 32 bit support codekipper
2019-06-04 8:19 ` Maxime Ripard [this message]
2019-06-03 17:47 ` [PATCH v4 9/9] ASoC: sun4i-i2s: Adjust regmap settings codekipper
2019-06-04 8:21 ` Maxime Ripard
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