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-rw-r--r--sound/soc/intel/skylake/Makefile2
-rw-r--r--sound/soc/intel/skylake/skl-nhlt.c141
-rw-r--r--sound/soc/intel/skylake/skl-nhlt.h116
-rw-r--r--sound/soc/intel/skylake/skl.h7
4 files changed, 265 insertions, 1 deletions
diff --git a/sound/soc/intel/skylake/Makefile b/sound/soc/intel/skylake/Makefile
index 1fccb378e62c..b35faef05779 100644
--- a/sound/soc/intel/skylake/Makefile
+++ b/sound/soc/intel/skylake/Makefile
@@ -1,4 +1,4 @@
-snd-soc-skl-objs := skl.o skl-pcm.o
+snd-soc-skl-objs := skl.o skl-pcm.o skl-nhlt.o
obj-$(CONFIG_SND_SOC_INTEL_SKYLAKE) += snd-soc-skl.o
diff --git a/sound/soc/intel/skylake/skl-nhlt.c b/sound/soc/intel/skylake/skl-nhlt.c
new file mode 100644
index 000000000000..5c0895eaa10a
--- /dev/null
+++ b/sound/soc/intel/skylake/skl-nhlt.c
@@ -0,0 +1,141 @@
+/*
+ * skl-nhlt.c - Intel SKL Platform NHLT parsing
+ *
+ * Copyright (C) 2015 Intel Corp
+ * Author: Sanjiv Kumar <sanjiv.kumar@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+#include <linux/acpi.h>
+#include "skl.h"
+
+/* Unique identification for getting NHLT blobs */
+static u8 OSC_UUID[16] = {0x6E, 0x88, 0x9F, 0xA6, 0xEB, 0x6C, 0x94, 0x45,
+ 0xA4, 0x1F, 0x7B, 0x5D, 0xCE, 0x24, 0xC5, 0x53};
+
+#define DSDT_NHLT_PATH "\\_SB.PCI0.HDAS"
+
+void __iomem *skl_nhlt_init(struct device *dev)
+{
+ acpi_handle handle;
+ union acpi_object *obj;
+ struct nhlt_resource_desc *nhlt_ptr = NULL;
+
+ if (ACPI_FAILURE(acpi_get_handle(NULL, DSDT_NHLT_PATH, &handle))) {
+ dev_err(dev, "Requested NHLT device not found\n");
+ return NULL;
+ }
+
+ obj = acpi_evaluate_dsm(handle, OSC_UUID, 1, 1, NULL);
+ if (obj && obj->type == ACPI_TYPE_BUFFER) {
+ nhlt_ptr = (struct nhlt_resource_desc *)obj->buffer.pointer;
+
+ return ioremap_cache(nhlt_ptr->min_addr, nhlt_ptr->length);
+ }
+
+ dev_err(dev, "device specific method to extract NHLT blob failed\n");
+ return NULL;
+}
+
+void skl_nhlt_free(void __iomem *addr)
+{
+ iounmap(addr);
+ addr = NULL;
+}
+
+static struct nhlt_specific_cfg *skl_get_specific_cfg(
+ struct device *dev, struct nhlt_fmt *fmt,
+ u8 no_ch, u8 rate, u16 bps)
+{
+ struct nhlt_specific_cfg *sp_config;
+ struct wav_fmt *wfmt;
+ struct nhlt_fmt_cfg *fmt_config = fmt->fmt_config;
+ int i;
+
+ dev_dbg(dev, "Format count =%d\n", fmt->fmt_count);
+
+ for (i = 0; i < fmt->fmt_count; i++) {
+ wfmt = &fmt_config->fmt_ext.fmt;
+ dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", wfmt->channels,
+ wfmt->bits_per_sample, wfmt->samples_per_sec);
+ if (wfmt->channels == no_ch && wfmt->samples_per_sec == rate &&
+ wfmt->bits_per_sample == bps) {
+ sp_config = &fmt_config->config;
+
+ return sp_config;
+ }
+
+ fmt_config = (struct nhlt_fmt_cfg *)(fmt_config->config.caps +
+ fmt_config->config.size);
+ }
+
+ return NULL;
+}
+
+static void dump_config(struct device *dev, u32 instance_id, u8 linktype,
+ u8 s_fmt, u8 num_channels, u32 s_rate, u8 dirn, u16 bps)
+{
+ dev_dbg(dev, "Input configuration\n");
+ dev_dbg(dev, "ch=%d fmt=%d s_rate=%d\n", num_channels, s_fmt, s_rate);
+ dev_dbg(dev, "vbus_id=%d link_type=%d\n", instance_id, linktype);
+ dev_dbg(dev, "bits_per_sample=%d\n", bps);
+}
+
+static bool skl_check_ep_match(struct device *dev, struct nhlt_endpoint *epnt,
+ u32 instance_id, u8 link_type, u8 dirn)
+{
+ dev_dbg(dev, "vbus_id=%d link_type=%d dir=%d\n",
+ epnt->virtual_bus_id, epnt->linktype, epnt->direction);
+
+ if ((epnt->virtual_bus_id == instance_id) &&
+ (epnt->linktype == link_type) &&
+ (epnt->direction == dirn))
+ return true;
+ else
+ return false;
+}
+
+struct nhlt_specific_cfg
+*skl_get_ep_blob(struct skl *skl, u32 instance, u8 link_type,
+ u8 s_fmt, u8 num_ch, u32 s_rate, u8 dirn)
+{
+ struct nhlt_fmt *fmt;
+ struct nhlt_endpoint *epnt;
+ struct hdac_bus *bus = ebus_to_hbus(&skl->ebus);
+ struct device *dev = bus->dev;
+ struct nhlt_specific_cfg *sp_config;
+ struct nhlt_acpi_table *nhlt = (struct nhlt_acpi_table *)skl->nhlt;
+ u16 bps = num_ch * s_fmt;
+ u8 j;
+
+ dump_config(dev, instance, link_type, s_fmt, num_ch, s_rate, dirn, bps);
+
+ epnt = (struct nhlt_endpoint *)nhlt->desc;
+
+ dev_dbg(dev, "endpoint count =%d\n", nhlt->endpoint_count);
+
+ for (j = 0; j < nhlt->endpoint_count; j++) {
+ if (skl_check_ep_match(dev, epnt, instance, link_type, dirn)) {
+ fmt = (struct nhlt_fmt *)(epnt->config.caps +
+ epnt->config.size);
+ sp_config = skl_get_specific_cfg(dev, fmt, num_ch, s_rate, bps);
+ if (sp_config)
+ return sp_config;
+ }
+
+ epnt = (struct nhlt_endpoint *)((u8 *)epnt + epnt->length);
+ }
+
+ return NULL;
+}
diff --git a/sound/soc/intel/skylake/skl-nhlt.h b/sound/soc/intel/skylake/skl-nhlt.h
new file mode 100644
index 000000000000..b0e2e4da42a1
--- /dev/null
+++ b/sound/soc/intel/skylake/skl-nhlt.h
@@ -0,0 +1,116 @@
+/*
+ * skl-nhlt.h - Intel HDA Platform NHLT header
+ *
+ * Copyright (C) 2015 Intel Corp
+ * Author: Sanjiv Kumar <sanjiv.kumar@intel.com>
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ *
+ */
+#ifndef __SKL_NHLT_H__
+#define __SKL_NHLT_H__
+
+struct acpi_desc_header {
+ u32 signature;
+ u32 length;
+ u8 revision;
+ u8 checksum;
+ u8 oem_id[6];
+ u64 oem_table_id;
+ u32 oem_revision;
+ u32 creator_id;
+ u32 creator_revision;
+} __packed;
+
+struct wav_fmt {
+ u16 fmt_tag;
+ u16 channels;
+ u32 samples_per_sec;
+ u32 avg_bytes_per_sec;
+ u16 block_align;
+ u16 bits_per_sample;
+ u16 cb_size;
+} __packed;
+
+struct wav_fmt_ext {
+ struct wav_fmt fmt;
+ union samples {
+ u16 valid_bits_per_sample;
+ u16 samples_per_block;
+ u16 reserved;
+ } sample;
+ u32 channel_mask;
+ u8 sub_fmt[16];
+} __packed;
+
+enum nhlt_link_type {
+ NHLT_LINK_HDA = 0,
+ NHLT_LINK_DSP = 1,
+ NHLT_LINK_DMIC = 2,
+ NHLT_LINK_SSP = 3,
+ NHLT_LINK_INVALID
+};
+
+enum nhlt_device_type {
+ NHLT_DEVICE_BT = 0,
+ NHLT_DEVICE_DMIC = 1,
+ NHLT_DEVICE_I2S = 4,
+ NHLT_DEVICE_INVALID
+};
+
+struct nhlt_specific_cfg {
+ u32 size;
+ u8 caps[0];
+} __packed;
+
+struct nhlt_fmt_cfg {
+ struct wav_fmt_ext fmt_ext;
+ struct nhlt_specific_cfg config;
+} __packed;
+
+struct nhlt_fmt {
+ u8 fmt_count;
+ struct nhlt_fmt_cfg fmt_config[0];
+} __packed;
+
+struct nhlt_endpoint {
+ u32 length;
+ u8 linktype;
+ u8 instance_id;
+ u16 vendor_id;
+ u16 device_id;
+ u16 revision_id;
+ u32 subsystem_id;
+ u8 device_type;
+ u8 direction;
+ u8 virtual_bus_id;
+ struct nhlt_specific_cfg config;
+} __packed;
+
+struct nhlt_acpi_table {
+ struct acpi_desc_header header;
+ u8 endpoint_count;
+ struct nhlt_endpoint desc[0];
+} __packed;
+
+struct nhlt_resource_desc {
+ u32 extra;
+ u16 flags;
+ u64 addr_spc_gra;
+ u64 min_addr;
+ u64 max_addr;
+ u64 addr_trans_offset;
+ u64 length;
+} __packed;
+
+#endif
diff --git a/sound/soc/intel/skylake/skl.h b/sound/soc/intel/skylake/skl.h
index cc0f3e263495..31dafa8a0594 100644
--- a/sound/soc/intel/skylake/skl.h
+++ b/sound/soc/intel/skylake/skl.h
@@ -23,6 +23,7 @@
#include <sound/hda_register.h>
#include <sound/hdaudio_ext.h>
+#include "skl-nhlt.h"
#define SKL_SUSPEND_DELAY 2000
@@ -53,6 +54,8 @@ struct skl {
unsigned int init_failed:1; /* delayed init failed */
struct platform_device *dmic_dev;
+
+ void __iomem *nhlt; /* nhlt ptr */
};
#define skl_to_ebus(s) (&(s)->ebus)
@@ -68,4 +71,8 @@ struct skl_dma_params {
int skl_platform_unregister(struct device *dev);
int skl_platform_register(struct device *dev);
+void __iomem *skl_nhlt_init(struct device *dev);
+void skl_nhlt_free(void __iomem *addr);
+struct nhlt_specific_cfg *skl_get_ep_blob(struct skl *skl, u32 instance,
+ u8 link_type, u8 s_fmt, u8 no_ch, u32 s_rate, u8 dirn);
#endif /* __SOUND_SOC_SKL_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-16 23:12:48 +0000