On 2022-05-04 1:26 PM, Péter Ujfalusi wrote:
On 04/05/2022 12:41, Amadeusz Sławiński wrote:
On 4/29/2022 4:01 PM, Cezary Rojewski wrote:
+#define AVS_SSP(x) (BIT(x))
+#define AVS_SSP_RANGE(a, b) (GENMASK(b, a))
+
+/* supported I2S board codec configurations */
+static struct snd_soc_acpi_mach avs_skl_i2s_machines[] = {
+ {
+ .id = "INT343A",
+ .drv_name = "avs_rt286",
+ .link_mask = AVS_SSP(0),
I've told this before, 'link_mask' was introduced for *SoundWire*.
Please do not overload existing concepts and use this instead:
@i2s_link_mask: I2S/TDM links enabled on the board
Noooo :( Sad panda is sad.
'link_mask' is such a wonderful name as it matches naming used in our
specs - which call BE side 'LINK'.
If it's a must then yes, we will resign from using 'link_mask'.
I'll just note that header kernel doc for link_mask says:
" * @link_mask: describes required board layout, e.g. for SoundWire."
I would say there is no assumption that it is SDW only, so we could also
argue that if it is it should be named sdw_link_mask and comment be
fixed to remove "e.g." ;)
In mainline kernel it is (as of 5.18.0-rc5):
/**
* snd_soc_acpi_mach_params: interface for machine driver configuration
*
* @acpi_ipc_irq_index: used for BYT-CR detection
* @platform: string used for HDAudio codec support
* @codec_mask: used for HDAudio support
* @dmic_num: number of SoC- or chipset-attached PDM digital microphones
* @common_hdmi_codec_drv: use commom HDAudio HDMI codec driver
* @link_mask: SoundWire links enabled on the board
* @links: array of SoundWire link _ADR descriptors, null terminated
* @i2s_link_mask: I2S/TDM links enabled on the board
* @num_dai_drivers: number of elements in @dai_drivers
* @dai_drivers: pointer to dai_drivers, used e.g. in nocodec mode
*/
link_mask is for SDW
i2s_link_mask is for I2S
It might be nicer to prefix the bare link_mask with sdw, it might
happen, but the comment is pretty explicit. I would not dare to use
link_mask for DMIC for example...
Ok, only now I realized that the 'i2s_link_mask' is already part of
upstream kernel - commit:
ASoC: soc-acpi: add information on I2S/TDM link mask
from Mar 8th 2022. I agree on the "sdw_" prefix part. Right now, the
name gives plenty of room for interpretation.
Regards,
Czarek
