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Message-ID: <20230719030655.41451-1-wangweidong.a@awinic.com>
Date: Wed, 19 Jul 2023 11:06:55 +0800
From: wangweidong.a@...nic.com
To: krzysztof.kozlowski@...aro.org
Cc: alsa-devel@...a-project.org, broonie@...nel.org,
ckeepax@...nsource.cirrus.com, colin.i.king@...il.com,
conor+dt@...nel.org, devicetree@...r.kernel.org,
doug@...morgal.com, fido_max@...ox.ru, flatmax@...tmax.com,
herve.codina@...tlin.com, kiseok.jo@...ndevice.com,
krzysztof.kozlowski+dt@...aro.org, lgirdwood@...il.com,
linux-kernel@...r.kernel.org, liweilei@...nic.com, perex@...ex.cz,
pierre-louis.bossart@...ux.intel.com, rf@...nsource.cirrus.com,
robh+dt@...nel.org, shumingf@...ltek.com, tiwai@...e.com,
trix@...hat.com, wangweidong.a@...nic.com, yijiangtao@...nic.com,
zhangjianming@...nic.com
Subject: Re: [PATCH V1 1/5] ASoC: codecs: Add i2c and codec registration for aw88261 and their associated operation functions
Hi, Krzysztof,
Thank you very much for your advice.
On 18/07/2023 16:39, krzysztof.kozlowski@...aro.org wrote:
> On 17/07/2023 13:58, wangweidong.a@...nic.com wrote:
>> From: Weidong Wang <wangweidong.a@...nic.com>
>>
>> The AW88261 is an I2S/TDM input, high efficiency
>> digital Smart K audio amplifier with an integrated 10.25V
>> smart boost convert
>>
...
>> +
>> +static int aw88261_request_firmware_file(struct aw88261 *aw88261)
>> +{
>> + const struct firmware *cont = NULL;
>> + int ret;
>> +
>> + aw88261->aw_pa->fw_status = AW88261_DEV_FW_FAILED;
>> +
>> + ret = request_firmware(&cont, AW88261_ACF_FILE, aw88261->aw_pa->dev);
>> + if ((ret < 0) || (!cont)) {
>> + dev_err(aw88261->aw_pa->dev, "load [%s] failed!", AW88261_ACF_FILE);
>> + return ret;
>return dev_err_probe?
I will modify it as suggested.
>> + }
>> +
>> + dev_info(aw88261->aw_pa->dev, "loaded %s - size: %zu\n",
>> + AW88261_ACF_FILE, cont ? cont->size : 0);> +
>> + aw88261->aw_cfg = devm_kzalloc(aw88261->aw_pa->dev, cont->size + sizeof(int), GFP_KERNEL);
>> + if (!aw88261->aw_cfg) {
>> + release_firmware(cont);
>> + return -ENOMEM;
>> + }
>> + aw88261->aw_cfg->len = (int)cont->size;
>> + memcpy(aw88261->aw_cfg->data, cont->data, cont->size);
>> + release_firmware(cont);
>> +
>> + ret = aw88261_dev_load_acf_check(aw88261->aw_pa, aw88261->aw_cfg);
>> + if (ret < 0) {
>> + dev_err(aw88261->aw_pa->dev, "Load [%s] failed ....!", AW88261_ACF_FILE);
>> + return ret;
>> + }
>> +
>> + dev_dbg(aw88261->aw_pa->dev, "%s : bin load success\n", __func__);
> Drop dev_dbg on simple probe success/failure. There is tracing
> infrastructure for this.
I will delete this print statement.
>> +
>> + mutex_lock(&aw88261->lock);
>> + /* aw device init */
>> + ret = aw88261_dev_init(aw88261->aw_pa, aw88261->aw_cfg);
>> + if (ret < 0)
>> + dev_err(aw88261->aw_pa->dev, "dev init failed");
>> + mutex_unlock(&aw88261->lock);
>> +
>> + return ret;
>> +}
>> +
>> +static int aw88261_codec_probe(struct snd_soc_component *component)
>> +{
>> + struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component);
>> + struct aw88261 *aw88261 = snd_soc_component_get_drvdata(component);
>> + int ret;
>> +
>> + INIT_DELAYED_WORK(&aw88261->start_work, aw88261_startup_work);
>> +
>> + ret = aw88261_request_firmware_file(aw88261);
>> + if (ret < 0) {
>> + dev_err(aw88261->aw_pa->dev, "aw88261_request_firmware_file failed\n");
>> + return ret;
> Consider here dev_err_probe, to annotate possibility of probe deferal
> (e.g. missing rootfs). I think component probe is called for device probes?
I will modify it as suggested.
>> + }
>> +
>> + /* add widgets */
>> + ret = snd_soc_dapm_new_controls(dapm, aw88261_dapm_widgets,
>> + ARRAY_SIZE(aw88261_dapm_widgets));
>> + if (ret < 0)
>> + return ret;
>> +
>> + /* add route */
>> + ret = snd_soc_dapm_add_routes(dapm, aw88261_audio_map,
>> + ARRAY_SIZE(aw88261_audio_map));
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = snd_soc_add_component_controls(component, aw88261_controls,
>> + ARRAY_SIZE(aw88261_controls));
>> +
>> + return ret;
>> +}
>> +
>> +static void aw88261_codec_remove(struct snd_soc_component *aw_codec)
>> +{
>> + struct aw88261 *aw88261 = snd_soc_component_get_drvdata(aw_codec);
>> +
>> + cancel_delayed_work_sync(&aw88261->start_work);
>> +}
>> +
>> +
>> +static void aw88261_hw_reset(struct aw88261 *aw88261)
>> +{
>> + gpiod_set_value_cansleep(aw88261->reset_gpio, 0);
>> + usleep_range(AW88261_1000_US, AW88261_1000_US + 10);
>> + gpiod_set_value_cansleep(aw88261->reset_gpio, 1);
>> + usleep_range(AW88261_1000_US, AW88261_1000_US + 10);
>> +}
>> +
>> +static int aw88261_i2c_probe(struct i2c_client *i2c)
>> +{
>> + struct aw88261 *aw88261;
>> + int ret;
>> +
>> + if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_I2C)) {
>> + dev_err(&i2c->dev, "check_functionality failed");
>> + return -EIO;
>> + }
>> +
>> + aw88261 = aw88261_malloc_init(i2c);
>> + if (!aw88261) {
>> + dev_err(&i2c->dev, "malloc aw88261 failed");
> Do not print messages on allocation errors.
> Also, there is little sense in moving one or two functions - kzalloc -
> to separate function. It does not make the code easier to read.
I will modify it as suggested.
>> + return -ENOMEM;
>> + }
>> + i2c_set_clientdata(i2c, aw88261);
>> +
>> + aw88261->reset_gpio = devm_gpiod_get_optional(&i2c->dev, "reset", GPIOD_OUT_LOW);
>> + if (IS_ERR(aw88261->reset_gpio))
>> + dev_info(&i2c->dev, "reset gpio not defined\n");
>> + else
>> + aw88261_hw_reset(aw88261);
>> +
>> + aw88261->regmap = devm_regmap_init_i2c(i2c, &aw88261_remap_config);
>> + if (IS_ERR(aw88261->regmap)) {
>> + ret = PTR_ERR(aw88261->regmap);
>> + dev_err(&i2c->dev, "Failed to init regmap: %d\n", ret);
>> + return ret;
> return dev_err_probe
I will modify it as suggested.
>> + }
>> +
>> + /* aw pa init */
>> + ret = aw88261_init(&aw88261->aw_pa, i2c, aw88261->regmap);
>> + if (ret < 0)
>> + return ret;
>> +
>> + ret = devm_snd_soc_register_component(&i2c->dev,
>> + &soc_codec_dev_aw88261,
>> + aw88261_dai, ARRAY_SIZE(aw88261_dai));
>> + if (ret < 0)
>> + dev_err(&i2c->dev, "failed to register aw88261: %d", ret);
>> +
>> + return ret;
>> +}
>> +
>> +#ifdef CONFIG_OF
> Drop
I will modify it as suggested.
>> +static const struct of_device_id aw88261_of_match[] = {
>> + { .compatible = "awinic,aw88261" },
>> + { },
>> +};
>> +MODULE_DEVICE_TABLE(of, aw88261_of_match);
>> +#endif
>> +
>> +static const struct i2c_device_id aw88261_i2c_id[] = {
>> + { AW88261_I2C_NAME, 0 },
>> + { }
>> +};
>> +MODULE_DEVICE_TABLE(i2c, aw88261_i2c_id);
>> +
>> +static struct i2c_driver aw88261_i2c_driver = {
>> + .driver = {
>> + .name = AW88261_I2C_NAME,
>> + .of_match_table = of_match_ptr(aw88261_of_match),
> Drop of_match_ptr.
I will modify it as suggested.
Best regards,
Weidong Wang
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