From: Charles Keepax <ckeepax@opensource.cirrus.com>
To: Thomas Preston <thomas.preston@codethink.co.uk>
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: [PATCH v2 3/3] ASoC: TDA7802: Add turn-on diagnostic routine
Date: Tue, 30 Jul 2019 13:41:58 +0100 [thread overview]
Message-ID: <20190730124158.GH54126@ediswmail.ad.cirrus.com> (raw)
In-Reply-To: <20190730120937.16271-4-thomas.preston@codethink.co.uk>
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.
> +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.
Thanks,
Charles
next prev parent reply other threads:[~2019-07-30 12:41 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 [this message]
2019-07-30 14:04 ` [alsa-devel] " Thomas Preston
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
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