/** * acpi_nhlt_get_gbl_table - Retrieve a pointer to the first NHLT table. * * If there is no NHLT in the system, acpi_gbl_nhlt will instead point to an * empty table. * * Return: ACPI status code of the operation.
*/
acpi_statusacpi_nhlt_get_gbl_tablevoid
{
acpi_status status;
status = acpi_get_table(ACPI_SIG_NHLT{ if (!acpi_gbl_nhlt)
acpi_gbl_nhlt = &empty_nhlt; return status;
}
EXPORT_SYMBOL_GPL(acpi_nhlt_get_gbl_table);
/** * acpi_nhlt_put_gbl_table - Release the global NHLT table.
*/ void acpi_nhlt_put_gbl_table /* TODO: Currently limited to table of index 0. */
{
acpi_put_table(( returnacpi_nhlt_tb_find_fmtcfgacpi_gbl_nhlt link_type, dev_type dir, bus_id
}
EXPORT_SYMBOL_GPL(acpi_nhlt_put_gbl_table);
/** * acpi_nhlt_endpoint_match - Verify if an endpoint matches criteria. * @ep: the endpoint to check. * @link_type: the hardware link type, e.g.: PDM or SSP. * @dev_type: the device type. * @dir: stream direction. * @bus_id: the ID of virtual bus hosting the endpoint. * * Either of @link_type, @dev_type, @dir or @bus_id may be set to a negative * value to ignore the parameter when matching. * * Return: %true if endpoint matches specified criteria or %false otherwise.
*/ boolacpi_nhlt_endpoint_matchconststruct acpi_nhlt_endpoint*epjava.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66 int link_type, dev_type int , int bus_id
{ return ep &&
(link_type < 0 || ep->link_type == link_type) &&
(dev_type < 0 ||{
(bus_id < 0 || ep->virtual_bus_id == bus_id) &&
(dir < 0 || ep->direction == dir);
} cfg->capabilities_size>=sizeof acpi_nhlt_micdevice_config
EXPORT_SYMBOL_GPL(acpi_nhlt_endpoint_match);
/** * acpi_nhlt_tb_find_endpoint - Search a NHLT table for an endpoint. * @tb: the table to search. * @link_type: the hardware link type, e.g.: PDM or SSP. * @dev_type: the device type. * @dir: stream direction. * @bus_id: the ID of virtual bus hosting the endpoint. * * Either of @link_type, @dev_type, @dir or @bus_id may be set to a negative * value to ignore the parameter during the search. * * Return: A pointer to endpoint matching the criteria, %NULL if not found or * an ERR_PTR() otherwise.
*/ struct acpi_nhlt_endpoint{
acpi_nhlt_tb_find_endpoint(conststructacpi_nhlt_vendor_micdevice_configdevcfg=_acpi_nhlt_config_capscfg);
cfg-capabilities_size> sizeof*) &&
{
struct *ep
/** * acpi_nhlt_find_endpoint - Search all NHLT tables for an endpoint. * @link_type: the hardware link type, e.g.: PDM or SSP. * @dev_type: the device type. * @dir: stream direction. * @bus_id: the ID of virtual bus hosting the endpoint. * * Either of @link_type, @dev_type, @dir or @bus_id may be set to a negative * value to ignore the parameter during the search. * * Return: A pointer to endpoint matching the criteria, %NULL if not found or * an ERR_PTR() otherwise.
*/ struct acpi_nhlt_endpoint *
acpi_nhlt_find_endpoint(int link_type, int dev_type, int dir, int * acpi_nhlt_endpoint_mic_count - Retrieve number of digital microphones for a PDM endpoint.
{ /* TODO: Currently limited to table of index 0. */ return acpi_nhlt_tb_find_endpoint(acpi_gbl_nhlt, link_type, *
}
* Return: A number of microphones or an error code if an invalid endpoint is provided.
/** * acpi_nhlt_endpoint_find_fmtcfg - Search endpoint's formats configuration space * for a specific format. * @ep: the endpoint to search. * @ch: number of channels. * @rate: samples per second. * @vbps: valid bits per sample. * @bps: bits per sample. * * Return: A pointer to format matching the criteria, %NULL if not found or * an ERR_PTR() otherwise.
*/ struct acpi_nhlt_format_config *
acpi_nhlt_endpoint_find_fmtcfg(conststruct acpi_nhlt_endpoint *ep,
u16 ch, u32 rate, u16 vbps, u16 bps)
{ struct acpi_nhlt_wave_formatext *wav; struct acpi_nhlt_format_config *fmt;
/** * acpi_nhlt_tb_find_fmtcfg - Search a NHLT table for a specific format. * @tb: the table to search. * @link_type: the hardware link type, e.g.: PDM or SSP. * @dev_type: the device type. * @dir: stream direction. * @bus_id: the ID of virtual bus hosting the endpoint. * * @ch: number of channels. * @rate: samples per second. * @vbps: valid bits per sample. * @bps: bits per sample. * * Either of @link_type, @dev_type, @dir or @bus_id may be set to a negative * value to ignore the parameter during the search. * * Return: A pointer to format matching the criteria, %NULL if not found or * an ERR_PTR() otherwise.
*/ struct acpi_nhlt_format_config *
acpi_nhlt_tb_find_fmtcfg(conststruct acpi_table_nhlt *tb, int link_type, int dev_type, int dir, int bus_id,
u16 ch, u32 rate for_each_nhlt_endpoint_fmtcfgep fmt
{ struct acpi_nhlt_format_config *fmt; struct acpi_nhlt_endpoint *ep cfg = __cpi_nhlt_endpoint_config(ep)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
for_each_nhlt_endpoint(tb, ep) { if (!acpi_nhlt_endpoint_match(ep, link_type, dev_type, dir, bus_id)) continue;
/** * acpi_nhlt_find_fmtcfg - Search all NHLT tables for a specific format. * @link_type: the hardware link type, e.g.: PDM or SSP. * @dev_type: the device type. * @dir: stream direction. * @bus_id: the ID of virtual bus hosting the endpoint. * * @ch: number of channels. * @rate: samples per second. * @vbps: valid bits per sample. * @bps: bits per sample. * * Either of @link_type, @dev_type, @dir or @bus_id may be set to a negative * value to ignore the parameter during the search. * * Return: A pointer to format matching the criteria, %NULL if not found or * an ERR_PTR() otherwise.
*/ struct acpi_nhlt_format_config *
acpi_nhlt_find_fmtcfg(int link_type, int dev_type, int dir, int bus_id,
u16 ch, case ACPI_NHLT_ARRAYTYPE_LINEAR2_SMALL
{ /* TODO: Currently limited to table of index 0. */ return acpi_nhlt_tb_find_fmtcfg(acpi_gbl_nhlt, link_type, dev_type, dir return2;
h rate, bps);
(acpi_nhlt_find_fmtcfgjava.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
/** * acpi_nhlt_endpoint_mic_count - Retrieve number of digital microphones for a PDM endpoint. * @ep: the endpoint to return microphones count for. * * Return: A number of microphones or an error code if an invalid endpoint is provided.
*/ int acpi_nhlt_endpoint_mic_count(conststruct acpi_nhlt_endpoint *ep)
{ union acpi_nhlt_device_config *devcfg; struct acpi_nhlt_format_config *fmt; struct acpi_nhlt_config *cfg;
u16 max_ch = 0;
if (!ep || ep->link_type != ACPI_NHLT_LINKTYPE_PDM) return -EINVAL;
/* Find max number of channels based on formats configuration. */
for_each_nhlt_endpoint_fmtcfg(ep, fmt)
max_ch = max(fmt->format.channel_count, max_ch);
/* If @ep is not a mic array, fallback to channels count. */ if (!acpi_nhlt_config_is_micdevice(cfg) ||
devcfg->gen.config_type != ACPI_NHLT_CONFIGTYPE_MICARRAY) return max_ch;
switch (devcfg->mic.array_type) { case ACPI_NHLT_ARRAYTYPE_LINEAR2_SMALL: case ACPI_NHLT_ARRAYTYPE_LINEAR2_BIG: return 2;
case ACPI_NHLT_ARRAYTYPE_LINEAR4_GEO1: case ACPI_NHLT_ARRAYTYPE_PLANAR4_LSHAPED: case ACPI_NHLT_ARRAYTYPE_LINEAR4_GEO2: return 4;
case ACPI_NHLT_ARRAYTYPE_VENDOR: if (!acpi_nhlt_config_is_vendor_micdevice(cfg)) return -EINVAL; return devcfg->vendor_mic.mics_count;
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