From: Chen-Yu Tsai <wens@csie.org>
To: Maxime Ripard <maxime@cerno.tech>
Cc: "Samuel Holland" <samuel@sholland.org>,
"Mark Brown" <broonie@kernel.org>,
"Liam Girdwood" <lgirdwood@gmail.com>,
"Rob Herring" <robh+dt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Vasily Khoruzhick" <anarsoul@gmail.com>,
"Mylène Josserand" <mylene.josserand@free-electrons.com>,
"Jaroslav Kysela" <perex@perex.cz>,
"Takashi Iwai" <tiwai@suse.com>,
Linux-ALSA <alsa-devel@alsa-project.org>,
devicetree <devicetree@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [RFC PATCH 00/34] sun8i-codec fixes and new features
Date: Mon, 17 Feb 2020 17:44:36 +0800 [thread overview]
Message-ID: <CAGb2v65GuwLdJ3Rkt1cyU6EroWZ6pim7-sGry5jYBoi=mubpUg@mail.gmail.com> (raw)
In-Reply-To: <20200217091423.y2muniz3hosquho6@gilmour.lan>
On Mon, Feb 17, 2020 at 5:14 PM Maxime Ripard <maxime@cerno.tech> wrote:
>
> Hi,
>
> On Mon, Feb 17, 2020 at 12:42:16AM -0600, Samuel Holland wrote:
> > The sun8i-codec driver, as used in the Allwinner A33 and A64, currently
> > only exposes a small subset of the available hardware features. In order
> > to use the A64 in a smartphone (the PinePhone), I've added the necessary
> > functionality to the driver:
> > * The full set of supported DAI format options
> > * Support for AIF2 and AIF3
> > * Additional routing knobs
> > * Additional volume controls
> >
> > Unfortunately, due to preexisting issues with the driver, there are some
> > breaking changes, as explained further in the commit messages:
> > * The LRCK inversion issue means we need a new compatible for the A64.
> > * Some controls are named inaccurately, so they are renamed.
> > * Likewise, the DAPM widgets used in device trees were either named
> > wrong, or the device trees were using the wrong widgets in the first
> > place. (Specifically, the links between the analog codec and digital
> > codec happen at the ADC and DAC, not AIF1.)
> >
> > I tended to take the philosophy of "while I'm breaking things, I might
> > as well do them right", so I've probably made a few more changes than
> > absolutely necessary. I'm not sure about where all of the policy
> > boundaries are, about how far I should go to maintain compatibility. For
> > example, for the DT widget usage, I could:
> > * Rename everything and update the DTS files (which is what I did)
> > * Keep the old (misleading/wrong) name for the widgets, but repurpose
> > them to work correctly
> > (i.e. "ADC Left" would be named "AIF1 Slot 0 Left ADC", but it
> > would work just like "ADC Left" does in this patchset)
> > * Keep the old widgets around as a compatibility layer, but add new
> > widgets and update the in-tree DTS files to use them
> > (i.e. "ADC Left" would have a path from "AIF1 Slot 0 Left ADC",
> > but "AIF1 Slot 0 Left ADC" would be a no-op widget)
> > * Something else entirely
>
> I'm not sure this is really a concern here. We need to maintain the
> compatibility with old DT's, but those will have an A33 compatible
> too, and as far as I can see, you're not changing anything for that
> compatible, so we're in the clear?
>
> If not, then the third option would probably be the best, especially
> since it's only a couple of them.
Unfortunately the description for both chips are shared, and they're wrong.
So we probably need a new compatible (or a new driver)... or like options
2 or 3, keep the DT visible endpoints (but deprecate them), and route them
to a new set of proper widgets.
ChenYu
next prev parent reply other threads:[~2020-02-17 9:44 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 6:42 [RFC PATCH 00/34] sun8i-codec fixes and new features Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 01/34] ASoC: dt-bindings: Add a separate compatible for the A64 codec Samuel Holland
2020-02-17 9:49 ` Chen-Yu Tsai
2020-02-18 3:17 ` Samuel Holland
2020-02-26 15:18 ` Rob Herring
2020-02-17 6:42 ` [RFC PATCH 02/34] ASoC: sun8i-codec: LRCK is not inverted on A64 Samuel Holland
2020-02-17 9:50 ` Chen-Yu Tsai
2020-02-17 14:43 ` Mark Brown
2020-02-17 6:42 ` [RFC PATCH 03/34] arm64: dts: allwinner: a64: Fix the audio codec compatible Samuel Holland
2020-02-17 14:56 ` Mark Brown
2020-02-17 6:42 ` [RFC PATCH 04/34] ASoC: sun8i-codec: Remove unused dev from codec struct Samuel Holland
2020-02-17 7:41 ` Chen-Yu Tsai
2020-02-17 15:04 ` Mark Brown
2020-02-21 14:21 ` Applied "ASoC: sun8i-codec: Remove unused dev from codec struct" to the asoc tree Mark Brown
2020-02-17 6:42 ` [RFC PATCH 05/34] ASoC: sun8i-codec: Remove incorrect SND_SOC_DAIFMT_DSP_B Samuel Holland
2020-02-17 8:19 ` Chen-Yu Tsai
2020-02-17 15:02 ` Mark Brown
2020-02-18 1:35 ` Samuel Holland
2020-02-18 11:32 ` Mark Brown
2020-02-17 6:42 ` [RFC PATCH 06/34] ASoC: sun8i-codec: Fix setting DAI data format Samuel Holland
2020-02-17 8:23 ` Chen-Yu Tsai
2020-02-17 22:03 ` Applied "ASoC: sun8i-codec: Fix setting DAI data format" to the asoc tree Mark Brown
2020-02-17 6:42 ` [RFC PATCH 07/34] ASoC: sun8i-codec: Remove extraneous widgets Samuel Holland
2020-02-17 7:37 ` Chen-Yu Tsai
2020-02-17 15:05 ` Mark Brown
2020-02-17 6:42 ` [RFC PATCH 08/34] ASoC: sun8i-codec: Fix direction of AIF1 outputs Samuel Holland
2020-02-17 8:22 ` Chen-Yu Tsai
2020-02-17 15:09 ` Mark Brown
2020-02-18 1:44 ` Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 09/34] ASoC: sun8i-codec: Fix broken DAPM routing Samuel Holland
2020-02-17 15:24 ` Mark Brown
2020-02-17 6:42 ` [RFC PATCH 10/34] ASoC: sun8i-codec: Advertise only hardware-supported rates Samuel Holland
2020-02-17 15:30 ` Mark Brown
2020-02-18 1:55 ` Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 11/34] ASoC: sun8i-codec: Enforce parameter symmetry Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 12/34] ASoC: sun8i-codec: Fix AIF1 MODCLK widget name Samuel Holland
2020-02-17 8:06 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 13/34] ASoC: sun8i-codec: Fix AIF1_ADCDAT_CTRL field names Samuel Holland
2020-02-17 7:58 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 14/34] ASoC: sun8i-codec: Fix AIF1_MXR_SRC " Samuel Holland
2020-02-17 7:57 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 15/34] ASoC: sun8i-codec: Fix ADC_DIG_CTRL field name Samuel Holland
2020-02-17 7:55 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 16/34] ASoC: sun8i-codec: Fix field bit number indentation Samuel Holland
2020-02-17 7:54 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 17/34] ASoC: sun8i-codec: Sort masks in a consistent order Samuel Holland
2020-02-17 7:59 ` Chen-Yu Tsai
2020-02-17 6:42 ` [RFC PATCH 18/34] ASoC: sun8i-codec: Allow all clock inversion permutations Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 19/34] ASoC: sun8i-codec: Support mono DAI configurations Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 20/34] ASoC: sun8i-codec: Support 8/20/24-bit word sizes Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 21/34] ASoC: sun8i-codec: Clean up module/clock hierarchy Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 22/34] ASoC: sun8i-codec: Clean up AIF1 Slot 0 widgets Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 23/34] ASoC: sun8i-codec: Clean up DAC widgets Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 24/34] ASoC: sun8i-codec: Prepare to support multiple AIFs Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 25/34] ASoC: sun8i-codec: Add support for AIF2 Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 26/34] ASoC: sun8i-codec: Add support for AIF3 Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 27/34] ASoC: sun8i-codec: Add AIF mono/stereo controls Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 28/34] ASoC: sun8i-codec: Add AIF loopback controls Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 29/34] ASoC: sun8i-codec: Add AIF, ADC, and DAC volume controls Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 30/34] ASoC: dt-bindings: Bump sound-dai-cells on sun8i-codec Samuel Holland
2020-02-18 20:23 ` Rob Herring
2020-02-17 6:42 ` [RFC PATCH 31/34] ARM: dts: sun8i-a33: Allow using multiple codec DAIs Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 32/34] arm64: dts: allwinner: a64: " Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 33/34] arm64: dts: allwinner: a64: Allow multiple DAI links Samuel Holland
2020-02-17 6:42 ` [RFC PATCH 34/34] arm64: dts: allwinner: a64: Add pinmux for AIF2/AIF3 Samuel Holland
2020-02-17 9:14 ` [RFC PATCH 00/34] sun8i-codec fixes and new features Maxime Ripard
2020-02-17 9:44 ` Chen-Yu Tsai [this message]
2020-02-17 12:07 ` Maxime Ripard
2020-02-17 16:26 ` Mark Brown
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