> > + /* This is an assumption that the system sends stereo audio to the > amplifier typically. > > + * And the stereo audio is placed in slot 0/2/4/6 as the starting slot. > > + * According to the slot number, we also set the mono LR to select the > right slot. > > + */ > > + first_bit = __ffs(rx_mask); > > + switch (first_bit) { > > + case 0: > > + case 2: > > + case 4: > > + case 6: > > + snd_soc_component_update_bits(component, > > + RT1015_PAD_DRV2, RT1015_MONO_LR_SEL_MASK, > > + RT1015_MONO_L_CHANNEL); > > + snd_soc_component_update_bits(component, > > + RT1015_TDM1_4, > > + RT1015_TDM_I2S_TX_L_DAC1_1_MASK | > > + RT1015_TDM_I2S_TX_R_DAC1_1_MASK, > > + (first_bit << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) | > > + ((first_bit+1) << RT1015_TDM_I2S_TX_R_DAC1_1_SFT)); > > + break; > > + case 1: > > + case 3: > > + case 5: > > + case 7: > > + snd_soc_component_update_bits(component, > > + RT1015_PAD_DRV2, RT1015_MONO_LR_SEL_MASK, > > + RT1015_MONO_R_CHANNEL); > > + snd_soc_component_update_bits(component, > > + RT1015_TDM1_4, > > + RT1015_TDM_I2S_TX_L_DAC1_1_MASK | > > + RT1015_TDM_I2S_TX_R_DAC1_1_MASK, > > + ((first_bit-1) << RT1015_TDM_I2S_TX_L_DAC1_1_SFT) | > > + (first_bit << RT1015_TDM_I2S_TX_R_DAC1_1_SFT)); > > + break; > > One more question from me: if you have 2 amplifiers on the same link and use > slot 0 and 1, what would be the rx_mask for each amplifier? If the mask is > BIT(0) for left and BIT(1) for right, it looks like both would render L+R? Oh, I didn't expect that the customers want to render L+R when using TDM configuration. > Also should the settings and channel selection be modifiable using the codec > configuration as we've done for RT1308, e.g. rt1015-1 would use LL and > rt1015-2 would use RR? OK, I will remove the mono LR channel selection in rt1015_set_tdm_slot function. The channel selection setting would be controlled by the application level only. RT1015 is a mono amplifier, it could select 'Left', 'Right' and 'Left + Right average'. > > Thanks > -Pierre > > ------Please consider the environment before printing this e-mail.