[ 75.897933] tlv320aic3x-codec 2-0018: ASoC: error at snd_soc_component_update_bits on tlv320aic3x-codec.2-0018: -6 Please check Image and Boot logs: TAG to search in txt file: divyeh ,tlv320aic. I think master IMX8MMEVK is not able to communicate with slave addres...
TLV320AIC3104-Q1: Need Help to solve Error:error at snd_soc_component_update_bits and error at soc_c Options 12-11-2021 12:53 AM 2,256 Views divyeshmarne0 Contributor III Hi Team, CODEC: TLV320AIC3104 External Codec. CHANGES: + sound-tlv320aic3x ...
err = snd_soc_update_bits(codec, reg2, val_mask, val2); returnerr; } struct snd_ctl_elem_value *ucontrol:从用户层传递下来的,这个也可以从命名看出来(kcontrol-kernel control,ucontrol-user control); shift是位偏移,而位掩码mask是通过宏SOC_DOUBLE_R_TLV中的xmax运算得到:unsigned int mask = (...
err = snd_soc_update_bits(codec, reg2, val_mask, val2); return err; } struct snd_ctl_elem_value *ucontrol:从用户层传递下来的,这个也可以从命名看出来(kcontrol-kernel control,ucontrol-user control); shift是位偏移,而位掩码mask是通过宏SOC_DOUBLE_R_TLV中的xmax运算得到:unsigned int mask = ...
// 在micbias启用前执行的操作 snd_soc_update_bits(codec, MSM8X16_WCD_A_ANALOG_MICB_1_VAL, 0x3F, /* 假设电压值对应的寄存器值为0x3F */ 0x3F); /* 设置目标电压值 */ break; case SND_SOC_DAPM_POST_PMD: // 在micbias禁用后执行的操作 snd_soc_update_bits(codec, MSM8X16_WCD_A_ANALO...
snd_soc_component_update_bits(component, ADC_REG, ADC_MASK, ADC_VALUE); // 设置时钟参数等 // 更多参数设置 return 0; } ``` 通过以上步骤,我们成功地实现了devm_snd_soc_register_component函数,并注册了一个音频组件。希望通过本文的介绍,你已经对如何实现devm_snd_soc_register_component有了更深入的...
kctl.put()--snd_soc_put_volsw_2r用snd_soc_update_bits()->snd_soc_write()--->codec->write将100写到Playback Volume寄存器中。从上往下的大致流程:amixer-用户层|->snd_ctl_ioctl-系统调用|->snd_ctl_elem_write_user-内核钩子函数|->snd_ctl_elem_wirte-...
调用snd_soc_update_bits()->snd_soc_write()将ucontrol的value送到Codec的寄存器上。 snd_soc_put_volsw_2r()作为一个callback函数,用户层要设置某些功能时,如改变Playback Volume: #amixer cset numid=3,iface=MIXER,name='Playback Volume' 100 ...
snd_soc_update_bits()->snd_soc_write()--->codec->write将100 写到 Playback Volume 寄存器中。从上往下的大致流程: amixer-用户层 |->snd_ctl_ioctl-系统调用 |->snd_ctl_elem_write_user-内核钩子函数 |->snd_ctl_elem_wirte|->snd_ctl_find_id-遍历 kcontrol 链表找到与给定 id 相匹配的 kctl...
By default shift operations are performed in two stages: first shifts in units of 4 bits and then shifts in units of 1 bit. This speeds up shift operations, but adds additional hardware. Set this parameter to 0 to disable the two-stage shift to further reduce the size of the core....