From: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
To: Daniel Mack <daniel@zonque.org>,
linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org,
linux-i2c@vger.kernel.org, alsa-devel@alsa-project.org,
devicetree@vger.kernel.org, linux-clk@vger.kernel.org
Cc: lars@metafoo.de, sboyd@kernel.org, mturquette@baylibre.com,
robh+dt@kernel.org, broonie@kernel.org, pascal.huerst@gmail.com,
lee.jones@linaro.org
Subject: Re: [alsa-devel] [PATCH 06/10] mfd: Add core driver for AD242x A2B transceivers
Date: Tue, 17 Dec 2019 13:16:04 -0600 [thread overview]
Message-ID: <c3885b01-e6ec-1b67-6e48-69e3fc40bb62@linux.intel.com> (raw)
In-Reply-To: <20191209183511.3576038-8-daniel@zonque.org>
> +config MFD_AD242X
> + bool "Analog Devices AD242x A2B support"
> + select MFD_CORE
> + select REGMAP_I2C
> + depends on I2C=y && OF
is there a specific reason why I2C needs to be built-in (as opposed to 'm')?
> +/* See Table 3-2 in the datasheet */
is the datasheet public? I thought it was only available under NDA.
> + master->sync_clk = devm_clk_get(dev, "sync");
> + if (IS_ERR(master->sync_clk)) {
> + ret = PTR_ERR(master->sync_clk);
> + if (ret != -EPROBE_DEFER)
> + dev_err(dev, "failed to get sync clk: %d\n", ret);
> +
> + return ret;
> + }
> +
> + if (of_property_read_u32(dev->of_node, "clock-frequency",
> + &master->sync_clk_rate)) {
> + ret = clk_set_rate(master->sync_clk, master->sync_clk_rate);
shouldn't you check the rate before setting it?
> + if (ret < 0) {
> + dev_err(dev, "Cannot set sync clock rate: %d\n", ret);
> + return ret;
> + }
> + }
> +
> + master->sync_clk_rate = clk_get_rate(master->sync_clk);
> + if (master->sync_clk_rate != 44100 && master->sync_clk_rate != 48000) {
> + dev_err(dev, "SYNC clock rate %d is invalid\n",
> + master->sync_clk_rate);
> + return -EINVAL;
> + }
this is a bit odd, you set the rate in case there is a property but get
it anyways. the last block could be an else?
> +
> + ret = clk_prepare_enable(master->sync_clk);
> + if (ret < 0) {
> + dev_err(dev, "failed to enable sync clk: %d\n", ret);
> + return ret;
> + }
> +
> + /* Master node setup */
> +
> + ret = regmap_write(regmap, AD242X_CONTROL,
> + AD242X_CONTROL_MSTR | AD242X_CONTROL_SOFTRST);
> + if (ret < 0)
> + return ret;
> +
> + ret = ad242x_wait_for_irq(master, &master->run_completion, 10);
what is 10?
> +static int ad242x_master_remove(struct i2c_client *i2c)
> +{
> + struct ad242x_master *master = i2c_get_clientdata(i2c);
> +
> + if (master->sync_clk)
> + clk_disable_unprepare(master->sync_clk);
earlier you tested for IS_ERR(master->sync_clk)?
> + for (i = 0; i < 4; i++) {
what is 4? 4 hops?
next prev parent reply other threads:[~2019-12-17 19:54 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-09 18:35 [PATCH 00/10] mfd: Add support for Analog Devices A2B transceiver Daniel Mack
2019-12-09 18:35 ` [PATCH 01/10] dt-bindings: mfd: Add documentation for ad242x Daniel Mack
2019-12-19 19:29 ` Rob Herring
2019-12-09 18:35 ` [PATCH 02/10] dt-bindings: i2c: Add documentation for ad242x i2c controllers Daniel Mack
2020-01-08 3:45 ` Rob Herring
2019-12-09 18:35 ` [PATCH 03/10] dt-bindings: gpio: Add documentation for ad242x GPIO controllers Daniel Mack
2019-12-09 18:35 ` [PATCH 03/10] dt-bindings: gpio: Add documentation for AD242x " Daniel Mack
2019-12-09 18:35 ` [PATCH 04/10] dt-bindings: clock: Add documentation for AD242x clock providers Daniel Mack
2019-12-24 7:32 ` Stephen Boyd
2019-12-09 18:35 ` [PATCH 05/10] dt-bindings: sound: Add documentation for AD242x codecs Daniel Mack
2019-12-09 18:35 ` [PATCH 06/10] mfd: Add core driver for AD242x A2B transceivers Daniel Mack
2019-12-17 13:39 ` Lee Jones
2019-12-17 13:46 ` Lee Jones
2019-12-17 19:36 ` Daniel Mack
2019-12-17 19:24 ` Daniel Mack
2019-12-18 11:20 ` Luca Ceresoli
2019-12-17 19:16 ` Pierre-Louis Bossart [this message]
2019-12-18 9:40 ` [alsa-devel] " Daniel Mack
2019-12-09 18:35 ` [PATCH 07/10] i2c: Add driver for AD242x bus controller Daniel Mack
2019-12-12 16:11 ` Luca Ceresoli
2019-12-12 16:33 ` Wolfram Sang
2019-12-15 20:27 ` Daniel Mack
2019-12-17 8:35 ` Luca Ceresoli
2019-12-17 18:17 ` Daniel Mack
2019-12-09 18:35 ` [PATCH 08/10] gpio: Add driver for AD242x GPIO controllers Daniel Mack
2019-12-09 18:35 ` [PATCH 09/10] clk: Add support for AD242x clock output providers Daniel Mack
2019-12-24 7:46 ` Stephen Boyd
2019-12-09 18:35 ` [PATCH 10/10] ASoC: Add codec component for AD242x nodes Daniel Mack
2019-12-16 14:23 ` Mark Brown
2019-12-17 19:28 ` [alsa-devel] " Pierre-Louis Bossart
2019-12-18 9:49 ` Daniel Mack
2019-12-18 15:32 ` Pierre-Louis Bossart
2019-12-17 19:29 ` [alsa-devel] [PATCH 00/10] mfd: Add support for Analog Devices A2B transceiver Pierre-Louis Bossart
2019-12-18 9:53 ` Daniel Mack
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=c3885b01-e6ec-1b67-6e48-69e3fc40bb62@linux.intel.com \
--to=pierre-louis.bossart@linux.intel.com \
--cc=alsa-devel@alsa-project.org \
--cc=broonie@kernel.org \
--cc=daniel@zonque.org \
--cc=devicetree@vger.kernel.org \
--cc=lars@metafoo.de \
--cc=lee.jones@linaro.org \
--cc=linux-clk@vger.kernel.org \
--cc=linux-gpio@vger.kernel.org \
--cc=linux-i2c@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mturquette@baylibre.com \
--cc=pascal.huerst@gmail.com \
--cc=robh+dt@kernel.org \
--cc=sboyd@kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).