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@@ -0,0 +1,482 @@
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+// SPDX-License-Identifier: GPL-2.0+
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+/*
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+ * Copyright 2020 Google LLC
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+ *
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+ * Modified from coreboot nhlt.c
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+ */
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+
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+#define LOG_CATEGORY LOGC_ACPI
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+
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+#include <common.h>
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+#include <binman.h>
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+#include <dm.h>
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+#include <log.h>
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+#include <malloc.h>
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+#include <tables_csum.h>
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+#include <acpi/acpi_table.h>
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+#include <asm/acpi_nhlt.h>
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+#include <asm/unaligned.h>
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+#include <dm/acpi.h>
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+
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+#define NHLT_RID 1
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+#define NHLT_SSID 1
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+#define WAVEFORMAT_TAG 0xfffe
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+#define DEFAULT_VIRTUAL_BUS_ID 0
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+
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+static const struct sub_format pcm_subformat = {
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+ .data1 = 0x00000001,
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+ .data2 = 0x0000,
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+ .data3 = 0x0010,
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+ .data4 = { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 },
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+};
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+
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+struct nhlt *nhlt_init(void)
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+{
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+ struct nhlt *nhlt;
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+
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+ nhlt = malloc(sizeof(*nhlt));
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+
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+ if (!nhlt)
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+ return NULL;
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+
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+ memset(nhlt, 0, sizeof(*nhlt));
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+ nhlt->subsystem_id = NHLT_SSID;
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+
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+ return nhlt;
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+}
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+
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+struct nhlt_endpoint *nhlt_add_endpoint(struct nhlt *nhlt, int link_type,
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+ int device_type, int dir,
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+ u16 vid, u16 did)
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+{
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+ struct nhlt_endpoint *endp;
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+
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+ if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES)
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+ return NULL;
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+
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+ if (nhlt->num_endpoints >= MAX_ENDPOINTS)
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+ return NULL;
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+
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+ endp = &nhlt->endpoints[nhlt->num_endpoints];
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+
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+ endp->link_type = link_type;
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+ endp->instance_id = nhlt->current_instance_id[link_type];
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+ endp->vendor_id = vid;
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+ endp->device_id = did;
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+ endp->revision_id = NHLT_RID;
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+ endp->subsystem_id = nhlt->subsystem_id;
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+ endp->device_type = device_type;
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+ endp->direction = dir;
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+ endp->virtual_bus_id = DEFAULT_VIRTUAL_BUS_ID;
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+
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+ nhlt->num_endpoints++;
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+
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+ return endp;
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+}
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+
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+static int append_specific_config(struct nhlt_specific_config *spec_cfg,
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+ const void *config, size_t config_sz)
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+{
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+ size_t new_sz;
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+ void *new_cfg;
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+
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+ new_sz = spec_cfg->size + config_sz;
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+ new_cfg = malloc(new_sz);
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+ if (!new_cfg)
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+ return -ENOMEM;
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+
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+ /* Append new config */
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+ memcpy(new_cfg, spec_cfg->capabilities, spec_cfg->size);
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+ memcpy(new_cfg + spec_cfg->size, config, config_sz);
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+
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+ free(spec_cfg->capabilities);
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+
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+ /* Update with new config data */
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+ spec_cfg->size = new_sz;
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+ spec_cfg->capabilities = new_cfg;
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+
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+ return 0;
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+}
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+
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+int nhlt_endpoint_append_config(struct nhlt_endpoint *endp, const void *config,
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+ size_t config_sz)
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+{
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+ return append_specific_config(&endp->config, config, config_sz);
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+}
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+
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+struct nhlt_format *nhlt_add_format(struct nhlt_endpoint *endp,
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+ int num_channels, int sample_freq_khz,
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+ int container_bits_per_sample,
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+ int valid_bits_per_sample,
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+ uint32_t speaker_mask)
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+{
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+ struct nhlt_format *fmt;
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+ struct nhlt_waveform *wave;
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+
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+ if (endp->num_formats >= MAX_FORMATS)
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+ return NULL;
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+
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+ fmt = &endp->formats[endp->num_formats];
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+ wave = &fmt->waveform;
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+
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+ wave->tag = WAVEFORMAT_TAG;
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+ wave->num_channels = num_channels;
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+ wave->samples_per_second = sample_freq_khz * 1000;
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+ wave->bits_per_sample = container_bits_per_sample;
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+ wave->extra_size = sizeof(wave->valid_bits_per_sample);
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+ wave->extra_size += sizeof(wave->channel_mask);
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+ wave->extra_size += sizeof(wave->sub_format);
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+ wave->valid_bits_per_sample = valid_bits_per_sample;
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+ wave->channel_mask = speaker_mask;
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+ memcpy(&wave->sub_format, &pcm_subformat, sizeof(wave->sub_format));
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+
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+ /* Calculate the dervied fields */
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+ wave->block_align = wave->num_channels * wave->bits_per_sample / 8;
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+ wave->bytes_per_second = wave->block_align * wave->samples_per_second;
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+
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+ endp->num_formats++;
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+
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+ return fmt;
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+}
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+
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+int nhlt_format_append_config(struct nhlt_format *fmt, const void *config,
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+ size_t config_sz)
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+{
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+ return append_specific_config(&fmt->config, config, config_sz);
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+}
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+
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+int nhlt_endpoint_add_formats(struct nhlt_endpoint *endp,
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+ const struct nhlt_format_config *formats,
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+ size_t num_formats)
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+{
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+ ofnode node;
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+ size_t i;
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+
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+ node = binman_section_find_node("private-files");
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+
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+ for (i = 0; i < num_formats; i++) {
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+ const struct nhlt_format_config *cfg = &formats[i];
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+ struct nhlt_format *fmt;
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+ void *data;
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+ int size;
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+ int ret;
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+
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+ fmt = nhlt_add_format(endp, cfg->num_channels,
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+ cfg->sample_freq_khz,
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+ cfg->container_bits_per_sample,
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+ cfg->valid_bits_per_sample,
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+ cfg->speaker_mask);
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+ if (!fmt)
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+ return -ENOSPC;
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+
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+ if (!cfg->settings_file)
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+ continue;
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+
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+ ret = binman_entry_map(node, cfg->settings_file, &data, &size);
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+ if (ret) {
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+ log_warning("Failed to find settings file %s\n",
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+ cfg->settings_file);
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+ return log_msg_ret("settings", ret);
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+ }
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+
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+ ret = nhlt_format_append_config(fmt, data, size);
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+ if (ret)
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+ return log_msg_ret("append", ret);
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+ }
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+
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+ return 0;
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+}
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+
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+void nhlt_next_instance(struct nhlt *nhlt, int link_type)
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+{
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+ if (link_type < NHLT_LINK_HDA || link_type >= NHLT_MAX_LINK_TYPES)
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+ return;
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+
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+ nhlt->current_instance_id[link_type]++;
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+}
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+
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+static size_t calc_specific_config_size(struct nhlt_specific_config *cfg)
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+{
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+ return sizeof(cfg->size) + cfg->size;
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+}
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+
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+static size_t calc_format_size(struct nhlt_format *fmt)
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+{
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+ size_t sz = 0;
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+
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+ /* Wave format first */
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+ sz += sizeof(fmt->waveform.tag);
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+ sz += sizeof(fmt->waveform.num_channels);
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+ sz += sizeof(fmt->waveform.samples_per_second);
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+ sz += sizeof(fmt->waveform.bytes_per_second);
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+ sz += sizeof(fmt->waveform.block_align);
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+ sz += sizeof(fmt->waveform.bits_per_sample);
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+ sz += sizeof(fmt->waveform.extra_size);
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+ sz += sizeof(fmt->waveform.valid_bits_per_sample);
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+ sz += sizeof(fmt->waveform.channel_mask);
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+ sz += sizeof(fmt->waveform.sub_format);
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+
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+ sz += calc_specific_config_size(&fmt->config);
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+
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+ return sz;
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+}
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+
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+static size_t calc_endpoint_size(struct nhlt_endpoint *endp)
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+{
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+ int i;
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+ size_t sz = 0;
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+
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+ sz += sizeof(endp->length) + sizeof(endp->link_type);
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+ sz += sizeof(endp->instance_id) + sizeof(endp->vendor_id);
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+ sz += sizeof(endp->device_id) + sizeof(endp->revision_id);
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+ sz += sizeof(endp->subsystem_id) + sizeof(endp->device_type);
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+ sz += sizeof(endp->direction) + sizeof(endp->virtual_bus_id);
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+ sz += calc_specific_config_size(&endp->config);
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+ sz += sizeof(endp->num_formats);
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+
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+ for (i = 0; i < endp->num_formats; i++)
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+ sz += calc_format_size(&endp->formats[i]);
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+
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+ /* Adjust endpoint length to reflect current configuration */
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+ endp->length = sz;
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+
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+ return sz;
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+}
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+
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+static size_t calc_endpoints_size(struct nhlt *nhlt)
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+{
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+ size_t sz = 0;
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+ int i;
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+
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+ for (i = 0; i < nhlt->num_endpoints; i++)
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+ sz += calc_endpoint_size(&nhlt->endpoints[i]);
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+
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+ return sz;
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+}
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+
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+static size_t calc_size(struct nhlt *nhlt)
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+{
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+ return sizeof(nhlt->num_endpoints) + calc_endpoints_size(nhlt);
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+}
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+
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+size_t nhlt_current_size(struct nhlt *nhlt)
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+{
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+ return calc_size(nhlt) + sizeof(struct acpi_table_header);
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+}
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+
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+static void nhlt_free_resources(struct nhlt *nhlt)
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+{
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+ int i, j;
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+
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+ /* Free all specific configs */
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+ for (i = 0; i < nhlt->num_endpoints; i++) {
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+ struct nhlt_endpoint *endp = &nhlt->endpoints[i];
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+
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+ free(endp->config.capabilities);
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+ for (j = 0; j < endp->num_formats; j++) {
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+ struct nhlt_format *fmt = &endp->formats[j];
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+
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+ free(fmt->config.capabilities);
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+ }
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+ }
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+
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+ /* Free nhlt object proper */
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+ free(nhlt);
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+}
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+
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+struct cursor {
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+ u8 *buf;
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+};
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+
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+static void ser8(struct cursor *cur, uint val)
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+{
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+ *cur->buf = val;
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+ cur->buf += sizeof(val);
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+}
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+
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+static void ser16(struct cursor *cur, uint val)
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+{
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+ put_unaligned_le16(val, cur->buf);
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+ cur->buf += sizeof(val);
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+}
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+
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+static void ser32(struct cursor *cur, uint val)
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+{
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+ put_unaligned_le32(val, cur->buf);
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+ cur->buf += sizeof(val);
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+}
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+
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+static void serblob(struct cursor *cur, void *from, size_t sz)
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+{
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+ memcpy(cur->buf, from, sz);
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+ cur->buf += sz;
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+}
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+
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+static void serialise_specific_config(struct nhlt_specific_config *cfg,
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+ struct cursor *cur)
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+{
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+ ser32(cur, cfg->size);
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+ serblob(cur, cfg->capabilities, cfg->size);
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+}
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+
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+static void serialise_waveform(struct nhlt_waveform *wave, struct cursor *cur)
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+{
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+ ser16(cur, wave->tag);
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+ ser16(cur, wave->num_channels);
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+ ser32(cur, wave->samples_per_second);
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+ ser32(cur, wave->bytes_per_second);
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+ ser16(cur, wave->block_align);
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+ ser16(cur, wave->bits_per_sample);
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+ ser16(cur, wave->extra_size);
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+ ser16(cur, wave->valid_bits_per_sample);
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+ ser32(cur, wave->channel_mask);
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+ ser32(cur, wave->sub_format.data1);
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+ ser16(cur, wave->sub_format.data2);
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+ ser16(cur, wave->sub_format.data3);
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+ serblob(cur, wave->sub_format.data4, sizeof(wave->sub_format.data4));
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+}
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+
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+static void serialise_format(struct nhlt_format *fmt, struct cursor *cur)
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+{
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+ serialise_waveform(&fmt->waveform, cur);
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+ serialise_specific_config(&fmt->config, cur);
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+}
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+
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+static void serialise_endpoint(struct nhlt_endpoint *endp, struct cursor *cur)
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+{
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+ int i;
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+
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+ ser32(cur, endp->length);
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+ ser8(cur, endp->link_type);
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+ ser8(cur, endp->instance_id);
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+ ser16(cur, endp->vendor_id);
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+ ser16(cur, endp->device_id);
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+ ser16(cur, endp->revision_id);
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+ ser32(cur, endp->subsystem_id);
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+ ser8(cur, endp->device_type);
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+ ser8(cur, endp->direction);
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+ ser8(cur, endp->virtual_bus_id);
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+ serialise_specific_config(&endp->config, cur);
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+ ser8(cur, endp->num_formats);
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+
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+ for (i = 0; i < endp->num_formats; i++)
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+ serialise_format(&endp->formats[i], cur);
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+}
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+
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+static void nhlt_serialise_endpoints(struct nhlt *nhlt, struct cursor *cur)
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+{
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+ int i;
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+
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+ ser8(cur, nhlt->num_endpoints);
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+
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+ for (i = 0; i < nhlt->num_endpoints; i++)
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+ serialise_endpoint(&nhlt->endpoints[i], cur);
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+}
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+
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+int nhlt_serialise_oem_overrides(struct acpi_ctx *ctx, struct nhlt *nhlt,
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+ const char *oem_id, const char *oem_table_id,
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+ uint32_t oem_revision)
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+{
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+ struct cursor cur;
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+ struct acpi_table_header *header;
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+ size_t sz;
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+ size_t oem_id_len;
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+ size_t oem_table_id_len;
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+ int ret;
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+
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+ log_info("ACPI: * NHLT\n");
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+ sz = nhlt_current_size(nhlt);
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+
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+ /* Create header */
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+ header = (void *)ctx->current;
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+ memset(header, '\0', sizeof(struct acpi_table_header));
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+ acpi_fill_header(header, "NHLT");
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+ header->length = sz;
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+ header->revision = acpi_get_table_revision(ACPITAB_NHLT);
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+
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+ if (oem_id) {
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+ oem_id_len = min((int)strlen(oem_id), 6);
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+ memcpy(header->oem_id, oem_id, oem_id_len);
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+ }
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+ if (oem_table_id) {
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+ oem_table_id_len = min((int)strlen(oem_table_id), 8);
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+ memcpy(header->oem_table_id, oem_table_id, oem_table_id_len);
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+ }
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+ header->oem_revision = oem_revision;
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+
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+ cur.buf = (void *)(header + 1);
|
|
|
+ nhlt_serialise_endpoints(nhlt, &cur);
|
|
|
+
|
|
|
+ header->checksum = table_compute_checksum(header, sz);
|
|
|
+ nhlt_free_resources(nhlt);
|
|
|
+
|
|
|
+ ret = acpi_add_table(ctx, ctx->current);
|
|
|
+ if (ret)
|
|
|
+ return log_msg_ret("add", ret);
|
|
|
+ acpi_inc_align(ctx, sz);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int _nhlt_add_single_endpoint(struct nhlt *nhlt, int virtual_bus_id,
|
|
|
+ const struct nhlt_endp_descriptor *epd)
|
|
|
+{
|
|
|
+ struct nhlt_endpoint *endp;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ endp = nhlt_add_endpoint(nhlt, epd->link, epd->device, epd->direction,
|
|
|
+ epd->vid, epd->did);
|
|
|
+ if (!endp)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ endp->virtual_bus_id = virtual_bus_id;
|
|
|
+
|
|
|
+ ret = nhlt_endpoint_append_config(endp, epd->cfg, epd->cfg_size);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ ret = nhlt_endpoint_add_formats(endp, epd->formats, epd->num_formats);
|
|
|
+ if (ret)
|
|
|
+ return log_msg_ret("formats", ret);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int _nhlt_add_endpoints(struct nhlt *nhlt, int virtual_bus_id,
|
|
|
+ const struct nhlt_endp_descriptor *epds,
|
|
|
+ size_t num_epds)
|
|
|
+{
|
|
|
+ size_t i;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ for (i = 0; i < num_epds; i++) {
|
|
|
+ ret = _nhlt_add_single_endpoint(nhlt, virtual_bus_id, &epds[i]);
|
|
|
+ if (ret)
|
|
|
+ return log_ret(ret);
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+int nhlt_add_endpoints(struct nhlt *nhlt,
|
|
|
+ const struct nhlt_endp_descriptor *epds, size_t num_epds)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = _nhlt_add_endpoints(nhlt, DEFAULT_VIRTUAL_BUS_ID, epds, num_epds);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|
|
|
+
|
|
|
+int nhlt_add_ssp_endpoints(struct nhlt *nhlt, int virtual_bus_id,
|
|
|
+ const struct nhlt_endp_descriptor *epds,
|
|
|
+ size_t num_epds)
|
|
|
+{
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = _nhlt_add_endpoints(nhlt, virtual_bus_id, epds, num_epds);
|
|
|
+ if (!ret)
|
|
|
+ nhlt_next_instance(nhlt, NHLT_LINK_SSP);
|
|
|
+
|
|
|
+ return ret;
|
|
|
+}
|