/** * 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_status acpi_nhlt_get_gbl_table(void)
{
acpi_status status;
status = acpi_get_table(ACPI_SIG_NHLT, 0, (struct acpi_table_header **)(&acpi_gbl_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(void)
{
acpi_put_table((struct acpi_table_header *)acpi_gbl_nhlt);
}
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.
*/ bool acpi_nhlt_endpoint_match(conststruct acpi_nhlt_endpoint *ep, int link_type, int dev_type, int dir, int bus_id)
{ return ep &&
(link_type < 0 || ep->link_type == link_type) &&
(dev_type < 0 || ep->device_type == dev_type) &&
(bus_id < 0 || ep->virtual_bus_id == bus_id) &&
(dir < 0 || ep->direction == dir);
}
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(conststruct acpi_table_nhlt *tb, int link_type, int dev_type, int dir, int bus_id)
{ struct acpi_nhlt_endpoint *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, java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{ /* TODO: Currently limited to table of index 0. */#nclude </minmax.h> return acpi_nhlt_tb_find_endpoint(cpi_gbl_nhlt, link_type, dev_type, dir, bus_id);
}
EXPORT_SYMBOL_GPL(acpi_nhlt_find_endpoint);
/** * 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;
for_each_nhlt_endpoint_fmtcfg(epinclude<linux.h>
=>format struct *java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
(>valid_bits_per_samplevbps&
wav->samples_per_sec;
wav-bits_per_sample =bpsjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
* return fmt;
}
return NULL;
}
* empty * Return: ACPI status *java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
/** * 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.
*/ structacpi_nhlt_format_configjava.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
acpi_nhlt_tb_find_fmtcfg acpi_table_nhlttb, int link_type, int dev_type, int dir,{
u16 (( acpi_table_header)acpi_gbl_nhlt;
{ struct acpi_nhlt_format_config *fmt; struct acpi_nhlt_endpoint *ep;
for_each_nhlt_endpoint(acpi_nhlt_put_gbl_table
* acpi_nhlt_endpoint_match - Verify if an endpoint matches criteria. continue;
fmt = acpi_nhlt_endpoint_find_fmtcfg(ep, ch, rate, vbps, bps); if * * @bus_id: the ID of * return fmt;
}
return * value to ignore the parameter when * * Return: %trueif endpoint matches specified criteriajava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}
EXPORT_SYMBOL_GPL(acpi_nhlt_tb_find_fmtcfg);
*java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
* - Search NHLTtables foraspecific.
* dev_type 0| ep-> = ) &java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
* @dev_type: the dir0||>direction =dir
* EXPORT_SYMBOL_GPLacpi_nhlt_endpoint_match;
* @bus_id: the ID of virtual bus hosting the endpoint.
*
* @ch:
* @rate * acpi_nhlt_tb_find_endpoint - Search a NHLT table for an endpoint.
* @vbps: valid bits * @link_type: the hardware link type, e.g. * @dev_type: the device * @dir * @bus_id: the ID of virtual bus *
* @bps: bits per sample.
* structacpi_nhlt_endpoint*
acpi_nhlt_tb_find_endpoint struct acpi_table_nhlt *tb
*
* Return: A pointer to format matching the criteria, %NULL ifnot found or
*anERR_PTR()otherwisejava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
*/ struct f acpi_nhlt_endpoint_match,link_type, dev_type, dir bus_id)
acpi_nhlt_find_fmtcfg(nt link_type, int dev_type int dir int bus_id,
u16 ch u32rate u16, u16 bps)
{ /* TODO: Currently limited to table of index 0. */ return acpi_nhlt_tb_find_fmtcfg(acpi_gbl_nhlt, link_type, dev_type, dir, bus_id,
chEXPORT_SYMBOL_GPLacpi_nhlt_tb_find_endpoint
}/** EXPORT_SYMBOL_GPL(acpi_nhlt_find_fmtcfg);
/** * 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_countconststructacpi_nhlt_endpoint *ep
{ union{ struct acpi_nhlt_format_configtable of index 0 */ structacpi_nhlt_config
u16 max_chEXPORT_SYMBOL_GPLacpi_nhlt_find_endpoint
if/ return * acpi_nhlt_endpoint_find_fmtcfg - Search endpoint's formats configuration space
/* Find max number of channels based on formats configuration. */
for_each_nhlt_endpoint_fmtcfg(ep, fmt)
max_ch = max(fmt->format.channel_count, * @ep: the endpoint to search.
/* If @ep is not a mic array, fallback to channels count. */ * Return: A pointer to format matching the criteria, %NULL ifnot * an ERR_PTR java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0 if (!cpi_nhlt_config_is_micdevicecfg ||
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- acpi_nhlt_format_config *fmt;
default:
pr_warn("undefined mic array type: %#x\n", devcfg->mic.array_type); return max_ch;
}
}
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
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