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241 lines
6.4 KiB
241 lines
6.4 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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// Copyright (c) 2015-2019 Intel Corporation |
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#include <linux/acpi.h> |
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#include <sound/intel-nhlt.h> |
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struct nhlt_acpi_table *intel_nhlt_init(struct device *dev) |
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{ |
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struct nhlt_acpi_table *nhlt; |
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acpi_status status; |
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status = acpi_get_table(ACPI_SIG_NHLT, 0, |
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(struct acpi_table_header **)&nhlt); |
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if (ACPI_FAILURE(status)) { |
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dev_warn(dev, "NHLT table not found\n"); |
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return NULL; |
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} |
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return nhlt; |
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} |
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EXPORT_SYMBOL_GPL(intel_nhlt_init); |
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void intel_nhlt_free(struct nhlt_acpi_table *nhlt) |
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{ |
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acpi_put_table((struct acpi_table_header *)nhlt); |
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} |
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EXPORT_SYMBOL_GPL(intel_nhlt_free); |
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int intel_nhlt_get_dmic_geo(struct device *dev, struct nhlt_acpi_table *nhlt) |
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{ |
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struct nhlt_endpoint *epnt; |
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struct nhlt_dmic_array_config *cfg; |
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struct nhlt_vendor_dmic_array_config *cfg_vendor; |
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struct nhlt_fmt *fmt_configs; |
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unsigned int dmic_geo = 0; |
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u16 max_ch = 0; |
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u8 i, j; |
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if (!nhlt) |
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return 0; |
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if (nhlt->header.length <= sizeof(struct acpi_table_header)) { |
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dev_warn(dev, "Invalid DMIC description table\n"); |
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return 0; |
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} |
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for (j = 0, epnt = nhlt->desc; j < nhlt->endpoint_count; j++, |
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epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length)) { |
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if (epnt->linktype != NHLT_LINK_DMIC) |
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continue; |
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cfg = (struct nhlt_dmic_array_config *)(epnt->config.caps); |
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fmt_configs = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size); |
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/* find max number of channels based on format_configuration */ |
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if (fmt_configs->fmt_count) { |
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struct nhlt_fmt_cfg *fmt_cfg = fmt_configs->fmt_config; |
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dev_dbg(dev, "found %d format definitions\n", |
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fmt_configs->fmt_count); |
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for (i = 0; i < fmt_configs->fmt_count; i++) { |
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struct wav_fmt_ext *fmt_ext; |
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fmt_ext = &fmt_cfg->fmt_ext; |
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if (fmt_ext->fmt.channels > max_ch) |
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max_ch = fmt_ext->fmt.channels; |
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/* Move to the next nhlt_fmt_cfg */ |
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fmt_cfg = (struct nhlt_fmt_cfg *)(fmt_cfg->config.caps + |
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fmt_cfg->config.size); |
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} |
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dev_dbg(dev, "max channels found %d\n", max_ch); |
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} else { |
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dev_dbg(dev, "No format information found\n"); |
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} |
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if (cfg->device_config.config_type != NHLT_CONFIG_TYPE_MIC_ARRAY) { |
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dmic_geo = max_ch; |
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} else { |
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switch (cfg->array_type) { |
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case NHLT_MIC_ARRAY_2CH_SMALL: |
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case NHLT_MIC_ARRAY_2CH_BIG: |
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dmic_geo = MIC_ARRAY_2CH; |
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break; |
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case NHLT_MIC_ARRAY_4CH_1ST_GEOM: |
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case NHLT_MIC_ARRAY_4CH_L_SHAPED: |
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case NHLT_MIC_ARRAY_4CH_2ND_GEOM: |
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dmic_geo = MIC_ARRAY_4CH; |
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break; |
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case NHLT_MIC_ARRAY_VENDOR_DEFINED: |
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cfg_vendor = (struct nhlt_vendor_dmic_array_config *)cfg; |
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dmic_geo = cfg_vendor->nb_mics; |
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break; |
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default: |
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dev_warn(dev, "%s: undefined DMIC array_type 0x%0x\n", |
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__func__, cfg->array_type); |
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} |
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if (dmic_geo > 0) { |
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dev_dbg(dev, "Array with %d dmics\n", dmic_geo); |
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} |
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if (max_ch > dmic_geo) { |
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dev_dbg(dev, "max channels %d exceed dmic number %d\n", |
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max_ch, dmic_geo); |
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} |
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} |
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} |
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dev_dbg(dev, "dmic number %d max_ch %d\n", dmic_geo, max_ch); |
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return dmic_geo; |
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} |
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EXPORT_SYMBOL_GPL(intel_nhlt_get_dmic_geo); |
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bool intel_nhlt_has_endpoint_type(struct nhlt_acpi_table *nhlt, u8 link_type) |
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{ |
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struct nhlt_endpoint *epnt; |
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int i; |
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if (!nhlt) |
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return false; |
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epnt = (struct nhlt_endpoint *)nhlt->desc; |
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for (i = 0; i < nhlt->endpoint_count; i++) { |
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if (epnt->linktype == link_type) |
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return true; |
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epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); |
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} |
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return false; |
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} |
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EXPORT_SYMBOL(intel_nhlt_has_endpoint_type); |
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int intel_nhlt_ssp_endpoint_mask(struct nhlt_acpi_table *nhlt, u8 device_type) |
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{ |
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struct nhlt_endpoint *epnt; |
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int ssp_mask = 0; |
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int i; |
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if (!nhlt || (device_type != NHLT_DEVICE_BT && device_type != NHLT_DEVICE_I2S)) |
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return 0; |
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epnt = (struct nhlt_endpoint *)nhlt->desc; |
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for (i = 0; i < nhlt->endpoint_count; i++) { |
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if (epnt->linktype == NHLT_LINK_SSP && epnt->device_type == device_type) { |
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/* for SSP the virtual bus id is the SSP port */ |
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ssp_mask |= BIT(epnt->virtual_bus_id); |
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} |
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epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); |
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} |
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return ssp_mask; |
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} |
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EXPORT_SYMBOL(intel_nhlt_ssp_endpoint_mask); |
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static struct nhlt_specific_cfg * |
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nhlt_get_specific_cfg(struct device *dev, struct nhlt_fmt *fmt, u8 num_ch, |
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u32 rate, u8 vbps, u8 bps) |
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{ |
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struct nhlt_fmt_cfg *cfg = fmt->fmt_config; |
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struct wav_fmt *wfmt; |
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u16 _bps, _vbps; |
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int i; |
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dev_dbg(dev, "Endpoint format count=%d\n", fmt->fmt_count); |
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for (i = 0; i < fmt->fmt_count; i++) { |
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wfmt = &cfg->fmt_ext.fmt; |
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_bps = wfmt->bits_per_sample; |
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_vbps = cfg->fmt_ext.sample.valid_bits_per_sample; |
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dev_dbg(dev, "Endpoint format: ch=%d fmt=%d/%d rate=%d\n", |
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wfmt->channels, _vbps, _bps, wfmt->samples_per_sec); |
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if (wfmt->channels == num_ch && wfmt->samples_per_sec == rate && |
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vbps == _vbps && bps == _bps) |
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return &cfg->config; |
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cfg = (struct nhlt_fmt_cfg *)(cfg->config.caps + cfg->config.size); |
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} |
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return NULL; |
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} |
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static bool nhlt_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt, |
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u32 bus_id, u8 link_type, u8 dir, u8 dev_type) |
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{ |
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dev_dbg(dev, "Endpoint: vbus_id=%d link_type=%d dir=%d dev_type = %d\n", |
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epnt->virtual_bus_id, epnt->linktype, |
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epnt->direction, epnt->device_type); |
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if ((epnt->virtual_bus_id != bus_id) || |
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(epnt->linktype != link_type) || |
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(epnt->direction != dir)) |
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return false; |
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/* link of type DMIC bypasses device_type check */ |
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return epnt->linktype == NHLT_LINK_DMIC || |
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epnt->device_type == dev_type; |
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} |
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struct nhlt_specific_cfg * |
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intel_nhlt_get_endpoint_blob(struct device *dev, struct nhlt_acpi_table *nhlt, |
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u32 bus_id, u8 link_type, u8 vbps, u8 bps, |
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u8 num_ch, u32 rate, u8 dir, u8 dev_type) |
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{ |
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struct nhlt_specific_cfg *cfg; |
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struct nhlt_endpoint *epnt; |
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struct nhlt_fmt *fmt; |
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int i; |
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if (!nhlt) |
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return NULL; |
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dev_dbg(dev, "Looking for configuration:\n"); |
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dev_dbg(dev, " vbus_id=%d link_type=%d dir=%d, dev_type=%d\n", |
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bus_id, link_type, dir, dev_type); |
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dev_dbg(dev, " ch=%d fmt=%d/%d rate=%d\n", num_ch, vbps, bps, rate); |
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dev_dbg(dev, "Endpoint count=%d\n", nhlt->endpoint_count); |
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epnt = (struct nhlt_endpoint *)nhlt->desc; |
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for (i = 0; i < nhlt->endpoint_count; i++) { |
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if (nhlt_check_ep_match(dev, epnt, bus_id, link_type, dir, dev_type)) { |
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fmt = (struct nhlt_fmt *)(epnt->config.caps + epnt->config.size); |
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cfg = nhlt_get_specific_cfg(dev, fmt, num_ch, rate, vbps, bps); |
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if (cfg) |
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return cfg; |
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} |
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epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length); |
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} |
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return NULL; |
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} |
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EXPORT_SYMBOL(intel_nhlt_get_endpoint_blob);
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