mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-06 02:50:43 +00:00
![Amadeusz Sławiński](/assets/img/avatar_default.png)
Two key operations missings are: endpoint presence-check and retrieval of matching endpoint hardware configuration (blob). Add operations for both use cases. Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com> Link: https://lore.kernel.org/r/20211126140355.1042684-2-cezary.rojewski@intel.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
214 lines
5.7 KiB
C
214 lines
5.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
// Copyright (c) 2015-2019 Intel Corporation
|
|
|
|
#include <linux/acpi.h>
|
|
#include <sound/intel-nhlt.h>
|
|
|
|
struct nhlt_acpi_table *intel_nhlt_init(struct device *dev)
|
|
{
|
|
struct nhlt_acpi_table *nhlt;
|
|
acpi_status status;
|
|
|
|
status = acpi_get_table(ACPI_SIG_NHLT, 0,
|
|
(struct acpi_table_header **)&nhlt);
|
|
if (ACPI_FAILURE(status)) {
|
|
dev_warn(dev, "NHLT table not found\n");
|
|
return NULL;
|
|
}
|
|
|
|
return nhlt;
|
|
}
|
|
EXPORT_SYMBOL_GPL(intel_nhlt_init);
|
|
|
|
void intel_nhlt_free(struct nhlt_acpi_table *nhlt)
|
|
{
|
|
acpi_put_table((struct acpi_table_header *)nhlt);
|
|
}
|
|
EXPORT_SYMBOL_GPL(intel_nhlt_free);
|
|
|
|
int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt)
|
|
{
|
|
struct nhlt_endpoint *epnt;
|
|
struct nhlt_dmic_array_config *cfg;
|
|
struct nhlt_vendor_dmic_array_config *cfg_vendor;
|
|
struct nhlt_fmt *fmt_configs;
|
|
unsigned int dmic_geo = 0;
|
|
u16 max_ch = 0;
|
|
u8 i, j;
|
|
|
|
if (!nhlt)
|
|
return 0;
|
|
|
|
if (nhlt->header.length <= sizeof(struct acpi_table_header)) {
|
|
dev_warn(dev, "Invalid DMIC description table\n");
|
|
return 0;
|
|
}
|
|
|
|
for (j = 0, epnt = nhlt->desc; j < nhlt->endpoint_count; j++,
|
|
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length)) {
|
|
|
|
if (epnt->linktype != NHLT_LINK_DMIC)
|
|
continue;
|
|
|
|
cfg = (struct nhlt_dmic_array_config *)(epnt->config.caps);
|
|
fmt_configs = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size);
|
|
|
|
/* find max number of channels based on format_configuration */
|
|
if (fmt_configs->fmt_count) {
|
|
dev_dbg(dev, "%s: found %d format definitions\n",
|
|
__func__, fmt_configs->fmt_count);
|
|
|
|
for (i = 0; i < fmt_configs->fmt_count; i++) {
|
|
struct wav_fmt_ext *fmt_ext;
|
|
|
|
fmt_ext = &fmt_configs->fmt_config[i].fmt_ext;
|
|
|
|
if (fmt_ext->fmt.channels > max_ch)
|
|
max_ch = fmt_ext->fmt.channels;
|
|
}
|
|
dev_dbg(dev, "%s: max channels found %d\n", __func__, max_ch);
|
|
} else {
|
|
dev_dbg(dev, "%s: No format information found\n", __func__);
|
|
}
|
|
|
|
if (cfg->device_config.config_type != NHLT_CONFIG_TYPE_MIC_ARRAY) {
|
|
dmic_geo = max_ch;
|
|
} else {
|
|
switch (cfg->array_type) {
|
|
case NHLT_MIC_ARRAY_2CH_SMALL:
|
|
case NHLT_MIC_ARRAY_2CH_BIG:
|
|
dmic_geo = MIC_ARRAY_2CH;
|
|
break;
|
|
|
|
case NHLT_MIC_ARRAY_4CH_1ST_GEOM:
|
|
case NHLT_MIC_ARRAY_4CH_L_SHAPED:
|
|
case NHLT_MIC_ARRAY_4CH_2ND_GEOM:
|
|
dmic_geo = MIC_ARRAY_4CH;
|
|
break;
|
|
case NHLT_MIC_ARRAY_VENDOR_DEFINED:
|
|
cfg_vendor = (struct nhlt_vendor_dmic_array_config *)cfg;
|
|
dmic_geo = cfg_vendor->nb_mics;
|
|
break;
|
|
default:
|
|
dev_warn(dev, "%s: undefined DMIC array_type 0x%0x\n",
|
|
__func__, cfg->array_type);
|
|
}
|
|
|
|
if (dmic_geo > 0) {
|
|
dev_dbg(dev, "%s: Array with %d dmics\n", __func__, dmic_geo);
|
|
}
|
|
if (max_ch > dmic_geo) {
|
|
dev_dbg(dev, "%s: max channels %d exceed dmic number %d\n",
|
|
__func__, max_ch, dmic_geo);
|
|
}
|
|
}
|
|
}
|
|
|
|
dev_dbg(dev, "%s: dmic number %d max_ch %d\n",
|
|
__func__, dmic_geo, max_ch);
|
|
|
|
return dmic_geo;
|
|
}
|
|
EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo);
|
|
|
|
bool intel_nhlt_has_endpoint_type(struct nhlt_acpi_table *nhlt, u8 link_type)
|
|
{
|
|
struct nhlt_endpoint *epnt;
|
|
int i;
|
|
|
|
if (!nhlt)
|
|
return false;
|
|
|
|
epnt = (struct nhlt_endpoint *)nhlt->desc;
|
|
for (i = 0; i < nhlt->endpoint_count; i++) {
|
|
if (epnt->linktype == link_type)
|
|
return true;
|
|
|
|
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
|
|
}
|
|
return false;
|
|
}
|
|
EXPORT_SYMBOL(intel_nhlt_has_endpoint_type);
|
|
|
|
static struct nhlt_specific_cfg *
|
|
nhlt_get_specific_cfg(struct device *dev, struct nhlt_fmt *fmt, u8 num_ch,
|
|
u32 rate, u8 vbps, u8 bps)
|
|
{
|
|
struct nhlt_fmt_cfg *cfg = fmt->fmt_config;
|
|
struct wav_fmt *wfmt;
|
|
u16 _bps, _vbps;
|
|
int i;
|
|
|
|
dev_dbg(dev, "Endpoint format count=%d\n", fmt->fmt_count);
|
|
|
|
for (i = 0; i < fmt->fmt_count; i++) {
|
|
wfmt = &cfg->fmt_ext.fmt;
|
|
_bps = wfmt->bits_per_sample;
|
|
_vbps = cfg->fmt_ext.sample.valid_bits_per_sample;
|
|
|
|
dev_dbg(dev, "Endpoint format: ch=%d fmt=%d/%d rate=%d\n",
|
|
wfmt->channels, _vbps, _bps, wfmt->samples_per_sec);
|
|
|
|
if (wfmt->channels == num_ch && wfmt->samples_per_sec == rate &&
|
|
vbps == _vbps && bps == _bps)
|
|
return &cfg->config;
|
|
|
|
cfg = (struct nhlt_fmt_cfg *)(cfg->config.caps + cfg->config.size);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static bool nhlt_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt,
|
|
u32 bus_id, u8 link_type, u8 dir, u8 dev_type)
|
|
{
|
|
dev_dbg(dev, "Endpoint: vbus_id=%d link_type=%d dir=%d dev_type = %d\n",
|
|
epnt->virtual_bus_id, epnt->linktype,
|
|
epnt->direction, epnt->device_type);
|
|
|
|
if ((epnt->virtual_bus_id != bus_id) ||
|
|
(epnt->linktype != link_type) ||
|
|
(epnt->direction != dir))
|
|
return false;
|
|
|
|
/* link of type DMIC bypasses device_type check */
|
|
return epnt->linktype == NHLT_LINK_DMIC ||
|
|
epnt->device_type == dev_type;
|
|
}
|
|
|
|
struct nhlt_specific_cfg *
|
|
intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt,
|
|
u32 bus_id, u8 link_type, u8 vbps, u8 bps,
|
|
u8 num_ch, u32 rate, u8 dir, u8 dev_type)
|
|
{
|
|
struct nhlt_specific_cfg *cfg;
|
|
struct nhlt_endpoint *epnt;
|
|
struct nhlt_fmt *fmt;
|
|
int i;
|
|
|
|
if (!nhlt)
|
|
return NULL;
|
|
|
|
dev_dbg(dev, "Looking for configuration:\n");
|
|
dev_dbg(dev, " vbus_id=%d link_type=%d dir=%d, dev_type=%d\n",
|
|
bus_id, link_type, dir, dev_type);
|
|
dev_dbg(dev, " ch=%d fmt=%d/%d rate=%d\n", num_ch, vbps, bps, rate);
|
|
dev_dbg(dev, "Endpoint count=%d\n", nhlt->endpoint_count);
|
|
|
|
epnt = (struct nhlt_endpoint *)nhlt->desc;
|
|
|
|
for (i = 0; i < nhlt->endpoint_count; i++) {
|
|
if (nhlt_check_ep_match(dev, epnt, bus_id, link_type, dir, dev_type)) {
|
|
fmt = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size);
|
|
|
|
cfg = nhlt_get_specific_cfg(dev, fmt, num_ch, rate, vbps, bps);
|
|
if (cfg)
|
|
return cfg;
|
|
}
|
|
|
|
epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(intel_nhlt_get_endpoint_blob);
|