From: Thomas Preston <thomas.preston@codethink.co.uk>
To: Charles Keepax <ckeepax@opensource.cirrus.com>
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, alsa-devel@alsa-project.org,
Marco Felsch <m.felsch@pengutronix.de>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Kirill Marinushkin <kmarinushkin@birdec.tech>,
Cheng-Yi Chiang <cychiang@chromium.org>,
linux-kernel@vger.kernel.org, Takashi Iwai <tiwai@suse.com>,
Rob Herring <robh+dt@kernel.org>,
Liam Girdwood <lgirdwood@gmail.com>,
Paul Cercueil <paul@crapouillou.net>,
Vinod Koul <vkoul@kernel.org>, Mark Brown <broonie@kernel.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Annaliese McDermond <nh6z@nh6z.net>,
Jerome Brunet <jbrunet@baylibre.com>
Subject: Re: [alsa-devel] [PATCH v2 3/3] ASoC: TDA7802: Add turn-on diagnostic routine
Date: Tue, 30 Jul 2019 15:04:19 +0100 [thread overview]
Message-ID: <e7a879d3-36c2-2df8-97c0-3c4bbd2e7ea2@codethink.co.uk> (raw)
In-Reply-To: <20190730124158.GH54126@ediswmail.ad.cirrus.com>
Hi,
Thanks for getting back to me so quickly.
On 30/07/2019 13:41, Charles Keepax wrote:
> On Tue, Jul 30, 2019 at 01:09:37PM +0100, Thomas Preston wrote:
>> Add a debugfs device node which initiates the turn-on diagnostic routine
>> feature of the TDA7802 amplifier. The four status registers (one per
>> channel) are returned.
>>
>> Signed-off-by: Thomas Preston <thomas.preston@codethink.co.uk>
>> ---
>> Changes since v1:
>> - Rename speaker-test to (turn-on) diagnostics
>> - Move turn-on diagnostic to debugfs as there is no standard ALSA
>> interface for this kind of routine.
>>
>> sound/soc/codecs/tda7802.c | 186 ++++++++++++++++++++++++++++++++++++-
>> 1 file changed, 185 insertions(+), 1 deletion(-)
>>
>> +static int tda7802_bulk_update(struct regmap *map, struct reg_update *update,
>> + size_t update_count)
>> +{
>> + int i, err;
>> +
>> + for (i = 0; i < update_count; i++) {
>> + err = regmap_update_bits(map, update[i].reg, update[i].mask,
>> + update[i].val);
>> + if (err < 0)
>> + return err;
>> + }
>> +
>> + return i;
>> +}
>
> This could probably be removed using regmap_multi_reg_write.
>
The problem is that I want to retain the state of the other bits in those
registers. Maybe I should make a copy of the backed up state, set the bits
I want to off-device, then either:
1. Write the changes with regmap_multi_reg_write
2. Write all six regs again (if my device doesn't support the multi_reg)
>> +static int tda7802_probe(struct snd_soc_component *component)
>> +{
>> + struct tda7802_priv *tda7802 = snd_soc_component_get_drvdata(component);
>> + struct device *dev = &tda7802->i2c->dev;
>> + int err;
>> +
>> + tda7802->debugfs = debugfs_create_dir(dev_name(dev), NULL);
>> + if (IS_ERR_OR_NULL(tda7802->debugfs)) {
>> + dev_info(dev,
>> + "Failed to create debugfs node, err %ld\n",
>> + PTR_ERR(tda7802->debugfs));
>> + return 0;
>> + }
>> +
>> + mutex_init(&tda7802->diagnostic_mutex);
>> + err = debugfs_create_file("diagnostic", 0444, tda7802->debugfs, tda7802,
>> + &tda7802_diagnostic_fops);
>> + if (err < 0) {
>> + dev_err(dev,
>> + "debugfs: Failed to create diagnostic node, err %d\n",
>> + err);
>> + goto cleanup_diagnostic;
>> + }
>
> You shouldn't be failing the driver probe if debugfs fails, it
> should be purely optional.
>
Got it, thanks.
next prev parent reply other threads:[~2019-07-30 14:04 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-30 12:09 [PATCH v2 0/3] ASoC: Codecs: Add TDA7802 codec Thomas Preston
2019-07-30 12:09 ` [PATCH v2 1/3] dt-bindings: ASoC: Add TDA7802 amplifier Thomas Preston
2019-07-30 12:27 ` Charles Keepax
2019-07-30 13:12 ` Marco Felsch
2019-07-30 14:12 ` [alsa-devel] " Thomas Preston
2019-07-30 14:33 ` Mark Brown
2019-07-30 14:10 ` Thomas Preston
2019-07-30 12:09 ` [PATCH v2 2/3] ASoC: Add codec driver for ST TDA7802 Thomas Preston
2019-07-30 12:38 ` Charles Keepax
2019-07-30 15:49 ` [alsa-devel] " Thomas Preston
2019-07-30 14:58 ` Mark Brown
2019-07-30 17:26 ` [alsa-devel] " Thomas Preston
2019-07-31 6:06 ` Marco Felsch
2019-07-31 8:57 ` Thomas Preston
2019-07-30 12:09 ` [PATCH v2 3/3] ASoC: TDA7802: Add turn-on diagnostic routine Thomas Preston
2019-07-30 12:41 ` Charles Keepax
2019-07-30 14:04 ` Thomas Preston [this message]
2019-07-30 14:18 ` Charles Keepax
2019-07-30 14:20 ` [alsa-devel] " Mark Brown
2019-07-30 15:27 ` Thomas Preston
2019-07-30 14:19 ` Mark Brown
2019-07-30 15:25 ` [alsa-devel] " Thomas Preston
2019-07-30 15:50 ` Mark Brown
2019-07-30 16:28 ` Thomas Preston
2019-07-31 8:03 ` Charles Keepax
2019-08-01 23:42 ` Mark Brown
2019-08-02 8:32 ` Thomas Preston
2019-08-02 11:10 ` Mark Brown
2019-08-02 14:51 ` Thomas Preston
2019-08-02 17:27 ` 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=e7a879d3-36c2-2df8-97c0-3c4bbd2e7ea2@codethink.co.uk \
--to=thomas.preston@codethink.co.uk \
--cc=alsa-devel@alsa-project.org \
--cc=broonie@kernel.org \
--cc=ckeepax@opensource.cirrus.com \
--cc=cychiang@chromium.org \
--cc=devicetree@vger.kernel.org \
--cc=jbrunet@baylibre.com \
--cc=kmarinushkin@birdec.tech \
--cc=kuninori.morimoto.gx@renesas.com \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=m.felsch@pengutronix.de \
--cc=mark.rutland@arm.com \
--cc=nh6z@nh6z.net \
--cc=paul@crapouillou.net \
--cc=robh+dt@kernel.org \
--cc=srinivas.kandagatla@linaro.org \
--cc=tiwai@suse.com \
--cc=vkoul@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).