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Date: Mon, 31 Jul 2023 14:41:54 +0800
From: wangweidong.a@...nic.com
To: krzysztof.kozlowski@...aro.org
Cc: 13916275206@....com, 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,
herve.codina@...tlin.com, krzysztof.kozlowski+dt@...aro.org,
lgirdwood@...il.com, linux-kernel@...r.kernel.org,
liweilei@...nic.com, perex@...ex.cz, povik+lin@...ebit.org,
rf@...nsource.cirrus.com, robh+dt@...nel.org, ryans.lee@...log.com,
shumingf@...ltek.com, tiwai@...e.com, trix@...hat.com,
wangweidong.a@...nic.com, yijiangtao@...nic.com,
zhangjianming@...nic.com
Subject: Re: [PATCH V3 4/5] ASoC: codecs: aw88261 device related operation functions
Thank you very much for your review, but I have a few questions
I'd like to discuss with you
On 29/07/2023 19:29, krzysztof.kozlowski@...aro.org wrote:
> On 29/07/2023 11:12, wangweidong.a@...nic.com wrote:
>> From: Weidong Wang <wangweidong.a@...nic.com>
>>
>> Operate the aw88261 chip, including device initialization,
>> chip power-on and power-off, control volume, etc.
>>
>> Signed-off-by: Weidong Wang <wangweidong.a@...nic.com>
>> ---
>> sound/soc/codecs/aw88261/aw88261_device.c | 877 ++++++++++++++++++++++
>> sound/soc/codecs/aw88261/aw88261_device.h | 79 ++
>> 2 files changed, 956 insertions(+)
>> create mode 100644 sound/soc/codecs/aw88261/aw88261_device.c
>> create mode 100644 sound/soc/codecs/aw88261/aw88261_device.h
>>
...
>> +
>> +int aw88261_dev_stop(struct aw88261_device *aw_dev)
>> +{
>> + if (aw_dev->aw88261_base->status == AW88261_DEV_PW_OFF) {
>> + dev_info(aw_dev->aw88261_base->dev, "already power off");
>> + return 0;
>> + }
>> +
>> + aw_dev->aw88261_base->status = AW88261_DEV_PW_OFF;
>> +
>> + /* clear inturrupt */
>> + aw_dev_clear_int_status(aw_dev);
>> +
>> + aw88261_dev_uls_hmute(aw_dev, true);
>> + /* set mute */
>> + aw88261_dev_mute(aw_dev, true);
>> +
>> + /* close tx feedback */
>> + aw_dev_i2s_tx_enable(aw_dev, false);
>> + usleep_range(AW88261_1000_US, AW88261_1000_US + 100);
>> +
>> + /* enable amppd */
>> + aw_dev_amppd(aw_dev, true);
>> +
>> + /* set power down */
>> + aw_dev_pwd(aw_dev, true);
>> +
>> + dev_dbg(aw_dev->dev, "pa stop success\n");
> No for debug replacing tracing. We have tracing for this.
I will delete this print debug statement
>> +
>> + return 0;
>> +}
>> +
>> +int aw88261_dev_init(struct aw88261_device *aw_dev, struct aw_container *aw_cfg)
> You already used this function in patch #3, so your order of patches is
> confusing.
Do I need to change the order of patch?
Do I neeed to put aw88261_device.c aw88261_device.h in patch #3 and
put aw88261.c aw88261.h in patch #4?
Is that how you change the order?
>> +{
>> + int ret;
>> +
>> + if ((!aw_dev) || (!aw_cfg)) {
>> + pr_err("aw_dev is NULL or aw_cfg is NULL");
> Is this possible? If so, why?
Thank you very much, I will delete this judgment.
>> + return -ENOMEM;
>> + }
>> +
>> + ret = aw88395_dev_cfg_load(aw_dev->aw88261_base, aw_cfg);
>> + if (ret) {
>> + dev_err(aw_dev->dev, "aw_dev acf parse failed");
>> + return -EINVAL;
>> + }
>> +
>> + ret = regmap_write(aw_dev->aw88261_base->regmap, AW88261_ID_REG, AW88261_SOFT_RESET_VALUE);
>> + if (ret < 0)
>> + return ret;
>> +
>> + aw_dev->aw88261_base->fade_in_time = AW88261_1000_US / 10;
>> + aw_dev->aw88261_base->fade_out_time = AW88261_1000_US >> 1;
>> + aw_dev->aw88261_base->prof_cur = AW_INIT_PROFILE;
>> + aw_dev->aw88261_base->prof_index = AW_INIT_PROFILE;
>> +
>> + ret = aw_dev_fw_update(aw_dev);
>> + if (ret) {
>> + dev_err(aw_dev->dev, "fw update failed ret = %d\n", ret);
>> + return ret;
>> + }
>> +
>> + ret = aw_frcset_check(aw_dev);
>> + if (ret) {
>> + dev_err(aw_dev->dev, "aw_frcset_check failed ret = %d\n", ret);
>> + return ret;
>> + }
>> +
>> + aw_dev_clear_int_status(aw_dev);
>> +
>> + aw88261_dev_uls_hmute(aw_dev, true);
>> +
>> + aw88261_dev_mute(aw_dev, true);
>> +
>> + aw_dev_i2s_tx_enable(aw_dev, false);
>> +
>> + usleep_range(AW88261_1000_US, AW88261_1000_US + 100);
>> +
>> + aw_dev_amppd(aw_dev, true);
>> +
>> + aw_dev_pwd(aw_dev, true);
>> +
>> + return 0;
>> +}
>> +
>> +static void aw_parse_channel_dt(struct aw88261_device *aw_dev)
>> +{
>> + struct device_node *np = aw_dev->aw88261_base->dev->of_node;
>> + u32 channel_value;
>> + u32 sync_enable;
>> + int ret;
>> +
>> + ret = of_property_read_u32(np, "sound-channel", &channel_value);
>> + if (ret)
>> + channel_value = AW88261_DEV_DEFAULT_CH;
>> +
>> + ret = of_property_read_u32(np, "sync-flag", &sync_enable);
>> + if (ret)
>> + sync_enable = false;
>> +
>> + dev_dbg(aw_dev->dev, "sync flag is %d", sync_enable);
> Fix style - only one space after ,
Thank you very much. I will modify it according to your suggestion.
>> + dev_dbg(aw_dev->dev, "read sound-channel value is: %d", channel_value);
>> +
>> + aw_dev->aw88261_base->channel = channel_value;
>> + aw_dev->phase_sync = sync_enable;
>> +}
>> +
>> +static int aw_dev_init(struct aw88261_device *aw_dev)
>> +{
>> + aw_dev->aw88261_base->chip_id = AW88261_CHIP_ID;
>> + /* call aw device init func */
>> + aw_dev->aw88261_base->acf = NULL;
>> + aw_dev->aw88261_base->prof_info.prof_desc = NULL;
>> + aw_dev->aw88261_base->prof_info.count = 0;
>> + aw_dev->aw88261_base->prof_info.prof_type = AW88395_DEV_NONE_TYPE_ID;
>> + aw_dev->aw88261_base->channel = 0;
>> + aw_dev->aw88261_base->fw_status = AW88261_DEV_FW_FAILED;
>> +
>> + aw_dev->aw88261_base->fade_step = AW88261_VOLUME_STEP_DB;
>> + aw_dev->aw88261_base->volume_desc.ctl_volume = AW88261_VOL_DEFAULT_VALUE;
>> + aw_dev->aw88261_base->volume_desc.mute_volume = AW88261_MUTE_VOL;
>> + aw_parse_channel_dt(aw_dev);
>> +
>> + return 0;
>> +}
>> +
>> +int aw88261_dev_set_profile_index(struct aw88261_device *aw_dev, int index)
>> +{
>> + struct aw_device *aw88261_base = aw_dev->aw88261_base;
>> +
>> + /* check the index whether is valid */
>> + if ((index >= aw88261_base->prof_info.count) || (index < 0))
>> + return -EINVAL;
>> + /* check the index whether change */
>> + if (aw88261_base->prof_index == index)
>> + return -EINVAL;
>> +
>> + aw88261_base->prof_index = index;
>> +
>> + return 0;
>> +}
>> +
>> +char *aw88261_dev_get_prof_name(struct aw88261_device *aw_dev, int index)
>> +{
>> + struct aw_prof_info *prof_info = &aw_dev->aw88261_base->prof_info;
>> + struct aw_prof_desc *prof_desc;
>> +
>> + if ((index >= aw_dev->aw88261_base->prof_info.count) || (index < 0)) {
>> + dev_err(aw_dev->dev, "index[%d] overflow count[%d]",
>> + index, aw_dev->aw88261_base->prof_info.count);
>> + return NULL;
>> + }
>> +
>> + prof_desc = &aw_dev->aw88261_base->prof_info.prof_desc[index];
>> +
>> + return prof_info->prof_name_list[prof_desc->id];
>> +}
>> +
>> +int aw88261_dev_get_prof_data(struct aw88261_device *aw_dev, int index,
>> + struct aw_prof_desc **prof_desc)
>> +{
>> + if ((index >= aw_dev->aw88261_base->prof_info.count) || (index < 0)) {
>> + dev_err(aw_dev->dev, "%s: index[%d] overflow count[%d]\n",
>> + __func__, index, aw_dev->aw88261_base->prof_info.count);
>> + return -EINVAL;
>> + }
>> +
>> + *prof_desc = &aw_dev->aw88261_base->prof_info.prof_desc[index];
>> +
>> + return 0;
>> +}
>> +
>> +int aw88261_init(struct aw88261_device **aw_dev, struct i2c_client *i2c, struct regmap *regmap)
> You already used this function in patch #3, so your order of patches is
> confusing.
I will change the patch order as mentioned above
>> +{
>> + unsigned int chip_id;
>> + int ret;
>> +
>> + if (*aw_dev) {
>> + dev_info(&i2c->dev, "it should be initialized here.\n");
> How is this possible?
I will modify it according to your suggestion.
>> + } else {
>> + *aw_dev = devm_kzalloc(&i2c->dev, sizeof(struct aw88261_device), GFP_KERNEL);
> sizeof(**)
Thank you very much. I will modify it according to your suggestion.
>> + if (!(*aw_dev))
>> + return -ENOMEM;
>> + }
>> +
>> + (*aw_dev)->aw88261_base =
>> + devm_kzalloc(&i2c->dev, sizeof(struct aw_device), GFP_KERNEL);
> sizeof(*)
Thank you very much. I will modify it according to your suggestion
>> + if (!(*aw_dev)->aw88261_base)
>> + return -ENOMEM;
>> +
>> + (*aw_dev)->aw88261_base->i2c = i2c;
> I propose to use some local variable, to simplify all these assignments.
Thank you very much. I will modify it according to your suggestion
>> + (*aw_dev)->aw88261_base->dev = &i2c->dev;
>> + (*aw_dev)->aw88261_base->regmap = regmap;
>> + (*aw_dev)->dev = &i2c->dev;
> In how many places do you need to store &i2c->dev?
There are many places where I use dev_err(aw_dev->dev, xxx) for error printing.
So I did this part of the storage.
Does it make sense to change to dev_err(aw_dev->aw88261_base->dev, xx) or add a local variable
and use "dev_err(aw88261_base->dev, xxx)"?
>> +
>> + /* read chip id */
>> + ret = regmap_read((*aw_dev)->aw88261_base->regmap, AW88261_CHIP_ID_REG, &chip_id);
>> + if (ret) {
>> + dev_err((*aw_dev)->dev, "%s read chipid error. ret = %d", __func__, ret);
>> + return ret;
>> + }
>> + dev_info((*aw_dev)->dev, "chip id = %x\n", chip_id);
> "(*aw_dev)->dev" all over this function is not really readable.
Thank you very much, I will change it to "dev_info(&i2c->dev, xxx)";
>> +
>> + switch (chip_id) {
>> + case AW88261_CHIP_ID:
>> + ret = aw_dev_init((*aw_dev));
>> + break;
>> + default:
>> + ret = -EINVAL;
>> + dev_err((*aw_dev)->dev, "unsupported device");
>> + break;
>> + }
>> +
>> + return ret;
>> +}
>> +
>> +MODULE_DESCRIPTION("AW88261 device");
>> +MODULE_LICENSE("GPL v2");
> Wait, is this a module? Does not look complete. I already saw one
> module, so what is this for? For which module?
Can it be changed to MODULE_DESCRIPTION("AW88261 device lib")?
The function in the aw88261_device.c file, which I used in the aw88261.c file.
Best regards,
Weidong Wang
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