new file mode 100644
@@ -0,0 +1,360 @@
+#ifndef __SOUND_SOC_HDAUDIO_H
+#define __SOUND_SOC_HDAUDIO_H
+
+#include <sound/core.h>
+#include <sound/initval.h>
+#include <sound/hda_register.h>
+#include <sound/hdaudio.h>
+
+struct soc_hdac_bus {
+ struct hdac_bus bus;
+ int num_streams;
+
+ bool ppcap:1;
+ bool spbcap:1;
+ bool mlcap:1;
+ bool gtscap:1;
+
+ void __iomem *ppcap_addr;
+ void __iomem *spbcap_addr;
+ void __iomem *mlcap_addr;
+ void __iomem *gtscap_addr;
+
+ /* linked list of hda links */
+ struct list_head hlink_list;
+};
+
+int snd_soc_hdac_bus_init(struct soc_hdac_bus *sbus, struct device *dev,
+ const struct hdac_bus_ops *ops,
+ const struct hdac_io_ops *io_ops);
+
+void snd_soc_hdac_bus_exit(struct soc_hdac_bus *sbus);
+int snd_soc_hdac_bus_device_init(struct soc_hdac_bus *sbus, int addr);
+void snd_soc_hdac_bus_device_exit(struct hdac_device *hdev);
+
+#define hdac_bus(sbus) (&(sbus)->bus)
+#define bus_to_soc_hdac_bus(_bus) \
+ container_of(_bus, struct soc_hdac_bus, bus)
+
+int snd_soc_hdac_bus_parse_capabilities(struct soc_hdac_bus *sbus);
+void snd_soc_hdac_bus_ppcap_enable(struct soc_hdac_bus *chip, bool enable);
+void snd_soc_hdac_bus_ppcap_int_enable(struct soc_hdac_bus *chip, bool enable);
+
+/*
+ * macros for ppcap register read/write
+ */
+#define _soc_hdac_bus_ppcap_write(type, dev, reg, value) \
+ ((dev)->bus.io_ops->reg_write ## type(value, (dev)->ppcap_addr + (reg)))
+#define _soc_hdac_bus_ppcap_read(type, dev, reg) \
+ ((dev)->bus.io_ops->reg_read ## type((dev)->ppcap_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_ppcap_writel(dev, reg, value) \
+ _soc_hdac_bus_ppcap_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_ppcap_writew(dev, reg, value) \
+ _soc_hdac_bus_ppcap_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_ppcap_writeb(dev, reg, value) \
+ _soc_hdac_bus_ppcap_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_ppcap_readl(dev, reg) \
+ _soc_hdac_bus_ppcap_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_ppcap_readw(dev, reg) \
+ _soc_hdac_bus_ppcap_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_ppcap_readb(dev, reg) \
+ _soc_hdac_bus_ppcap_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_ppcap_updatel(dev, reg, mask, val) \
+ soc_hdac_bus_ppcap_writel(dev, reg, \
+ (soc_hdac_bus_ppcap_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_ppcap_updatew(dev, reg, mask, val) \
+ soc_hdac_bus_ppcap_writew(dev, reg, \
+ (soc_hdac_bus_ppcap_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_ppcap_updateb(dev, reg, mask, val) \
+ soc_hdac_bus_ppcap_writeb(dev, reg, \
+ (soc_hdac_bus_ppcap_readb(dev, reg) & \
+ ~(mask)) | (val))
+
+void snd_soc_hdac_stream_spbcap_enable(struct soc_hdac_bus *chip,
+ bool enable, int index);
+/*
+ * macros for spcap register read/write
+ */
+#define _soc_hdac_bus_spbcap_write(type, dev, reg, value) \
+ ((dev)->bus.io_ops->reg_write ## type(value, \
+ (dev)->spbcap_addr + (reg)))
+#define _soc_hdac_bus_spbcap_read(type, dev, reg) \
+ ((dev)->bus.io_ops->reg_read ## type((dev)->spbcap_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_spbcap_writel(dev, reg, value) \
+ _soc_hdac_bus_spbcap_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_spbcap_writew(dev, reg, value) \
+ _soc_hdac_bus_spbcap_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_spbcap_writeb(dev, reg, value) \
+ _soc_hdac_bus_spbcap_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_spbcap_readl(dev, reg) \
+ _soc_hdac_bus_spbcap_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_spbcap_readw(dev, reg) \
+ _soc_hdac_bus_spbcap_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_spbcap_readb(dev, reg) \
+ _soc_hdac_bus_spbcap_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_spbcap_updatel(dev, reg, mask, val) \
+ soc_hdac_bus_spbcap_writel(dev, reg, \
+ (soc_hdac_bus_spbcap_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_spbcap_updatew(dev, reg, mask, val) \
+ soc_hdac_bus_spbcap_writew(dev, reg, \
+ (soc_hdac_bus_spbcap_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_spbcap_updateb(dev, reg, mask, val) \
+ soc_hdac_bus_spbcap_writeb(dev, reg, \
+ (soc_hdac_bus_spbcap_readb(dev, reg) & \
+ ~(mask)) | (val))
+
+int snd_soc_hdac_bus_get_ml_capabilities(struct soc_hdac_bus *bus);
+int snd_soc_hdac_bus_map_codec_to_link(struct soc_hdac_bus *bus, int addr);
+struct soc_hdac_link *snd_soc_hdac_bus_get_link(struct soc_hdac_bus *bus,
+ const char *codec_name);
+
+/*
+ * macros for mlcap register read/write
+ */
+#define _soc_hdac_bus_mlcap_write(type, dev, reg, value) \
+ ((dev)->bus.io_ops->reg_write ## type(value, (dev)->mlcap_addr + (reg)))
+#define _soc_hdac_bus_mlcap_read(type, dev, reg) \
+ ((dev)->bus.io_ops->reg_read ## type((dev)->mlcap_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_mlcap_writel(dev, reg, value) \
+ _soc_hdac_bus_mlcap_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_mlcap_writew(dev, reg, value) \
+ _soc_hdac_bus_mlcap_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_mlcap_writeb(dev, reg, value) \
+ _soc_hdac_bus_mlcap_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_mlcap_readl(dev, reg) \
+ _soc_hdac_bus_mlcap_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_mlcap_readw(dev, reg) \
+ _soc_hdac_bus_mlcap_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_mlcap_readb(dev, reg) \
+ _soc_hdac_bus_mlcap_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_mlcap_updatel(dev, reg, mask, val) \
+ soc_hdac_bus_mlcap_writel(dev, reg, \
+ (soc_hdac_bus_mlcap_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_mlcap_updatew(dev, reg, mask, val) \
+ soc_hdac_bus_mlcap_writew(dev, reg, \
+ (soc_hdac_bus_mlcap_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_mlcap_updateb(dev, reg, mask, val) \
+ soc_hdac_bus_mlcap_writeb(dev, reg, \
+ (soc_hdac_bus_mlcap_readb(dev, reg) & \
+ ~(mask)) | (val))
+
+/*
+ * macros for gtscap register read/write
+ */
+#define _soc_hdac_bus_gtscap_write(type, dev, reg, value) \
+ ((dev)->bus.io_ops->reg_write ## type(value, \
+ (dev)->gtscap_addr + (reg)))
+#define _soc_hdac_bus_gtscap_read(type, dev, reg) \
+ ((dev)->bus.io_ops->reg_read ## type((dev)->gtscap_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_gtscap_writel(dev, reg, value) \
+ _soc_hdac_bus_gtscap_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_gtscap_writew(dev, reg, value) \
+ _soc_hdac_bus_gtscap_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_gtscap_writeb(dev, reg, value) \
+ _soc_hdac_bus_gtscap_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_bus_gtscap_readl(dev, reg) \
+ _soc_hdac_bus_gtscap_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_gtscap_readw(dev, reg) \
+ _soc_hdac_bus_gtscap_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_bus_gtscap_readb(dev, reg) \
+ _soc_hdac_bus_gtscap_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_bus_gtscap_updatel(dev, reg, mask, val) \
+ soc_hdac_bus_gtscap_writel(dev, reg, \
+ (soc_hdac_bus_gtscap_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_gtscap_updatew(dev, reg, mask, val) \
+ soc_hdac_bus_gtscap_writew(dev, reg, \
+ (soc_hdac_bus_gtscap_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_bus_gtscap_updateb(dev, reg, mask, val) \
+ soc_hdac_bus_gtscap_writeb(dev, reg, \
+ (soc_hdac_bus_gtscap_readb(dev, reg) & \
+ ~(mask)) | (val))
+enum hdac_stream_type {
+ HDAC_STREAM_TYPE_COUPLED = 0,
+ HDAC_STREAM_TYPE_HOST,
+ HDAC_STREAM_TYPE_LINK
+};
+
+struct soc_hdac_stream {
+ struct hdac_stream hstream;
+
+ void __iomem *pphc_addr; /* processing pipe host stream reg pointer */
+ void __iomem *pplc_addr; /* processing pipe link stream reg pointer */
+
+ bool decoupled:1;
+ bool link_locked:1;
+ bool link_prepared;
+
+ struct snd_pcm_substream *link_substream;
+};
+
+#define hdac_stream(s) (&(s)->hstream)
+#define stream_to_soc_hdac_stream(s) \
+ container_of(s, struct soc_hdac_stream, hstream)
+
+void snd_soc_hdac_stream_init(struct soc_hdac_bus *bus,
+ struct soc_hdac_stream *stream, int idx,
+ int direction, int tag);
+struct soc_hdac_stream *snd_soc_hdac_stream_assign(struct soc_hdac_bus *bus,
+ struct snd_pcm_substream *substream,
+ int type);
+void snd_soc_hdac_stream_release(struct soc_hdac_stream *azx_dev, int type);
+void snd_soc_hdac_stream_decouple(struct soc_hdac_bus *bus,
+ struct soc_hdac_stream *azx_dev, bool decouple);
+void snd_soc_hdac_stop_streams(struct soc_hdac_bus *sbus);
+
+/*
+ * macros for host stream register read/write
+ */
+#define _soc_hdac_host_stream_write(type, dev, reg, value) \
+ ((dev)->hstream.bus->io_ops->reg_write ## type(value, \
+ (dev)->pphc_addr + (reg)))
+#define _soc_hdac_host_stream_read(type, dev, reg) \
+ ((dev)->hstream.bus->io_ops->reg_read ## type( \
+ (dev)->pphc_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_host_stream_writel(dev, reg, value) \
+ _soc_hdac_host_stream_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_host_stream_writew(dev, reg, value) \
+ _soc_hdac_host_stream_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_host_stream_writeb(dev, reg, value) \
+ _soc_hdac_host_stream_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_host_stream_readl(dev, reg) \
+ _soc_hdac_host_stream_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_host_stream_readw(dev, reg) \
+ _soc_hdac_host_stream_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_host_stream_readb(dev, reg) \
+ _soc_hdac_host_stream_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_host_stream_updatel(dev, reg, mask, val) \
+ soc_hdac_host_stream_writel(dev, reg, \
+ (soc_hdac_host_stream_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_host_stream_updatew(dev, reg, mask, val) \
+ soc_hdac_host_stream_writew(dev, reg, \
+ (soc_hdac_host_stream_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_host_stream_updateb(dev, reg, mask, val) \
+ soc_hdac_host_stream_writeb(dev, reg, \
+ (soc_hdac_host_stream_readb(dev, reg) & \
+ ~(mask)) | (val))
+
+void snd_soc_hdac_link_stream_start(struct soc_hdac_stream *hstream);
+void snd_soc_hdac_link_stream_clear(struct soc_hdac_stream *hstream);
+void snd_soc_hdac_link_stream_reset(struct soc_hdac_stream *hstream);
+int snd_soc_hdac_link_stream_setup(struct soc_hdac_stream *stream, int fmt);
+
+/*
+ * macros for link stream register read/write
+ */
+#define _soc_hdac_link_stream_write(type, dev, reg, value) \
+ ((dev)->hstream.bus->io_ops->reg_write ## type(value, \
+ (dev)->pplc_addr + (reg)))
+#define _soc_hdac_link_stream_read(type, dev, reg) \
+ ((dev)->hstream.bus->io_ops->reg_read ## type((dev)->pplc_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_link_stream_writel(dev, reg, value) \
+ _soc_hdac_link_stream_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_stream_writew(dev, reg, value) \
+ _soc_hdac_link_stream_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_stream_writeb(dev, reg, value) \
+ _soc_hdac_link_stream_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_stream_readl(dev, reg) \
+ _soc_hdac_link_stream_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_link_stream_readw(dev, reg) \
+ _soc_hdac_link_stream_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_link_stream_readb(dev, reg) \
+ _soc_hdac_link_stream_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_link_stream_updatel(dev, reg, mask, val) \
+ soc_hdac_link_stream_writel(dev, reg, \
+ (soc_hdac_link_stream_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_link_stream_updatew(dev, reg, mask, val) \
+ soc_hdac_link_stream_writew(dev, reg, \
+ (soc_hdac_link_stream_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_link_stream_updateb(dev, reg, mask, val) \
+ soc_hdac_link_stream_writeb(dev, reg, \
+ (soc_hdac_link_stream_readb(dev, reg) & \
+ ~(mask)) | (val))
+struct soc_hdac_link {
+ struct hdac_bus *bus;
+ int index;
+ void __iomem *ml_addr; /* link output stream reg pointer */
+ u32 lcaps; /* link capablities */
+ u16 lsdiid; /* link sdi identifier */
+ char codec[HDA_MAX_CODECS][32]; /* codecs connectes to the link */
+ struct list_head list;
+};
+
+int snd_soc_hdac_bus_link_power_up(struct soc_hdac_link *link);
+int snd_soc_hdac_bus_link_power_down(struct soc_hdac_link *link);
+void snd_soc_hdac_link_set_stream_id(struct soc_hdac_link *link,
+ int stream);
+void snd_soc_hdac_link_clear_stream_id(struct soc_hdac_link *link,
+ int stream);
+
+/*
+ * macros for mutilink register read/ write
+ */
+#define _soc_hdac_link_write(type, dev, reg, value) \
+ ((dev)->bus->io_ops->reg_write ## type(value, (dev)->ml_addr + (reg)))
+#define _soc_hdac_link_read(type, dev, reg) \
+ ((dev)->bus->io_ops->reg_read ## type((dev)->ml_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define soc_hdac_link_writel(dev, reg, value) \
+ _soc_hdac_link_write(l, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_writew(dev, reg, value) \
+ _soc_hdac_link_write(w, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_writeb(dev, reg, value) \
+ _soc_hdac_link_write(b, dev, AZX_REG_ ## reg, value)
+#define soc_hdac_link_readl(dev, reg) \
+ _soc_hdac_link_read(l, dev, AZX_REG_ ## reg)
+#define soc_hdac_link_readw(dev, reg) \
+ _soc_hdac_link_read(w, dev, AZX_REG_ ## reg)
+#define soc_hdac_link_readb(dev, reg) \
+ _soc_hdac_link_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define soc_hdac_link_updatel(dev, reg, mask, val) \
+ soc_hdac_link_writel(dev, reg, \
+ (soc_hdac_link_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_link_updatew(dev, reg, mask, val) \
+ soc_hdac_link_writew(dev, reg, \
+ (soc_hdac_link_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define soc_hdac_link_updateb(dev, reg, mask, val) \
+ soc_hdac_link_writeb(dev, reg, \
+ (soc_hdac_link_readb(dev, reg) & \
+ ~(mask)) | (val))
+#endif /* __SOUND_SOC_HDAUDIO_H */
@@ -1,3 +1,4 @@
-snd-soc-hda-core-objs := soc-hda-codec.o
+snd-soc-hda-core-objs := soc-hdac-controller.o soc-hdac-stream.o \
+soc-hdac-bus.o soc-hda-codec.o
obj-$(CONFIG_SND_SOC_HDA_CORE) += snd-soc-hda-core.o
new file mode 100644
@@ -0,0 +1,115 @@
+/*
+ * soc-hdac-bus.c - SoC HD-audio core bus functions.
+ *
+ * Copyright (C) 2014-2015 Intel Corp
+ * Author: Jeeja KP <jeeja.kp@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/kernel.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/soc-hdaudio.h>
+
+/**
+ * snd_soc_hdac_bus_init - initialize a HD-audio soc bus
+ * @sbus: the pointer to soc bus object
+ * @dev: device pointer
+ * @ops: bus verb operators
+ * @io_ops: lowlevel I/O operators
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+int snd_soc_hdac_bus_init(struct soc_hdac_bus *sbus, struct device *dev,
+ const struct hdac_bus_ops *ops,
+ const struct hdac_io_ops *io_ops)
+{
+ int ret;
+
+ ret = snd_hdac_bus_init(&sbus->bus, dev, ops, io_ops);
+ if (ret < 0)
+ return ret;
+
+ INIT_LIST_HEAD(&sbus->hlink_list);
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_init);
+
+/**
+ * snd_soc_hdac_bus_exit - clean up a HD-audio soc bus
+ * @sbus: the pointer to soc bus object
+ */
+void snd_soc_hdac_bus_exit(struct soc_hdac_bus *sbus)
+{
+ snd_hdac_bus_exit(&sbus->bus);
+ WARN_ON(!list_empty(&sbus->hlink_list));
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_exit);
+
+static void default_release(struct device *dev)
+{
+ snd_soc_hdac_bus_device_exit(container_of(dev, struct hdac_device, dev));
+}
+
+/**
+ * snd_soc_hdac_device_init - initialize the HD-audio soc codec base device
+ * @sbus: hdac asoc bus to attach to
+ * @addr: codec address
+ *
+ * Returns zero for success or a negative error code.
+ */
+int snd_soc_hdac_bus_device_init(struct soc_hdac_bus *sbus, int addr)
+{
+ struct hdac_device *hdev = NULL;
+ struct hdac_bus *bus = hdac_bus(sbus);
+ char name[15];
+ int ret;
+
+ hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
+ if (!hdev)
+ return -ENOMEM;
+
+ snprintf(name, sizeof(name), "soc-hda-codec#%03x", addr);
+
+ ret = snd_hdac_device_init(hdev, bus, name, addr);
+ if (ret < 0) {
+ dev_err(bus->dev, "device init failed for hdac device\n");
+ return ret;
+ }
+ hdev->type = HDA_DEV_ASOC;
+ hdev->dev.release = default_release;
+
+ ret = snd_hdac_device_register(hdev);
+ if (ret) {
+ dev_err(bus->dev, "failed to register hdac device\n");
+ snd_soc_hdac_bus_device_exit(hdev);
+ return ret;
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_device_init);
+
+/**
+ * snd_soc_hdac_bus_device_exit - clean up a HD-audio soc codec base device
+ * @hdev: hdac device to clean up
+ */
+void snd_soc_hdac_bus_device_exit(struct hdac_device *hdev)
+{
+ snd_hdac_device_exit(hdev);
+ kfree(hdev);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_device_exit);
new file mode 100644
@@ -0,0 +1,296 @@
+/*
+ * soc-hdac-controller.c - SoC HD-audio controller functions.
+ *
+ * Copyright (C) 2014-2015 Intel Corp
+ * Author: Jeeja KP <jeeja.kp@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/kernel.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <sound/core.h>
+#include <sound/hda_register.h>
+#include <sound/soc-hdaudio.h>
+
+/**
+ * snd_soc_hdac_bus_parse_capabilities - parse capablity structure
+ * @sbus: the pointer to soc bus object
+ *
+ * Returns 0 if successful, or a negative error code.
+ */
+int snd_soc_hdac_bus_parse_capabilities(struct soc_hdac_bus *sbus)
+{
+ unsigned int cur_cap;
+ unsigned int offset;
+ struct hdac_bus *bus = &sbus->bus;
+
+ offset = snd_hdac_chip_readl(bus, LLCH);
+
+ if (offset < 0)
+ return -EIO;
+
+ sbus->ppcap = false;
+ sbus->mlcap = false;
+ sbus->spbcap = false;
+ sbus->gtscap = false;
+
+ /* Lets walk the linked capabilities list */
+ do {
+ cur_cap = _snd_hdac_chip_read(l, bus, offset);
+
+ if (cur_cap < 0)
+ return -EIO;
+
+ dev_dbg(bus->dev, "Capability version: 0x%x\n",
+ ((cur_cap & AZX_CAP_HDR_VER_MASK) >> AZX_CAP_HDR_VER_OFF));
+
+ dev_dbg(bus->dev, "HDA capability ID: 0x%x\n",
+ (cur_cap & AZX_CAP_HDR_ID_MASK) >> AZX_CAP_HDR_ID_OFF);
+
+ switch ((cur_cap & AZX_CAP_HDR_ID_MASK) >> AZX_CAP_HDR_ID_OFF) {
+ case AZX_ML_CAP_ID:
+ dev_dbg(bus->dev, "Found ML capability\n");
+ sbus->mlcap = true;
+ sbus->mlcap_addr = bus->remap_addr + offset;
+ break;
+
+ case AZX_GTS_CAP_ID:
+ dev_dbg(bus->dev, "Found GTS capability offset=%x\n", offset);
+ sbus->gtscap = true;
+ sbus->gtscap_addr = bus->remap_addr + offset;
+ break;
+
+ case AZX_PP_CAP_ID:
+ /* PP capability found, the Audio DSP is present */
+ dev_dbg(bus->dev, "Found PP capability offset=%x\n", offset);
+ sbus->ppcap = true;
+ sbus->ppcap_addr = bus->remap_addr + offset;
+ break;
+
+ case AZX_SPB_CAP_ID:
+ /* SPIB capability found, handler function */
+ dev_dbg(bus->dev, "Found SPB capability\n");
+ sbus->spbcap = true;
+ sbus->spbcap_addr = bus->remap_addr + offset;
+ break;
+
+ default:
+ dev_dbg(bus->dev, "Unknown capability %d\n", cur_cap);
+ break;
+ }
+
+ /* read the offset of next capabiity */
+ offset = cur_cap & AZX_CAP_HDR_NXT_PTR_MASK;
+ } while (offset);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_parse_capabilities);
+
+/*
+ * processing pipe helpers - these helpers are useful for dealing with HDA
+ * new capability of processing pipelines
+ */
+
+/**
+ * snd_soc_hdac_bus_ppcap_enable - enable/disable processing pipe capability
+ * @sbus: HD-audio soc core bus
+ * @enable: flag to turn on/off the capability
+ */
+void snd_soc_hdac_bus_ppcap_enable(struct soc_hdac_bus *sbus, bool enable)
+{
+ struct hdac_bus *bus = &sbus->bus;
+
+ if (!sbus->ppcap) {
+ dev_err(bus->dev, "Address of PP capability is NULL");
+ return;
+ }
+
+
+ if (enable)
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL, 0, AZX_PPCTL_GPROCEN);
+ else
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL, AZX_PPCTL_GPROCEN, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_ppcap_enable);
+
+/**
+ * snd_soc_hdac_bus_ppcap_int_enable - ppcap interrupt enable/disable
+ * @sbus: HD-audio soc core bus
+ * @enable: flag to enable/disable interrupt
+ */
+void snd_soc_hdac_bus_ppcap_int_enable(struct soc_hdac_bus *sbus, bool enable)
+{
+ struct hdac_bus *bus = &sbus->bus;
+
+ if (!sbus->ppcap) {
+ dev_err(bus->dev, "Address of PP capability is NULL\n");
+ return;
+ }
+
+ if (enable)
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL, 0, AZX_PPCTL_PIE);
+ else
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL, AZX_PPCTL_PIE, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_ppcap_int_enable);
+
+/*
+ * Multilink helpers - these helpers are useful for dealing with HDA
+ * new multilink capability
+ */
+
+/**
+ * snd_soc_hdac_bus_get_ml_capabilities - get multilink capability
+ * @sbus: HD-audio soc core bus
+ *
+ * This will parse all links and read the mlink capabilities and add them
+ * in hlink_list of asoc hdac bus
+ * Note: this will be freed on bus exit by driver
+ */
+int snd_soc_hdac_bus_get_ml_capabilities(struct soc_hdac_bus *sbus)
+{
+ int idx;
+ u32 link_count;
+ struct soc_hdac_link *hlink;
+ struct hdac_bus *bus = &sbus->bus;
+
+ link_count = soc_hdac_bus_mlcap_readl(sbus, ML_MLCD) + 1;
+
+ dev_dbg(bus->dev, "In %s Link count: %d\n", __func__, link_count);
+
+ for (idx = 0; idx < link_count; idx++) {
+ hlink = kzalloc(sizeof(*hlink), GFP_KERNEL);
+ if (!hlink)
+ return -ENOMEM;
+ hlink->index = idx;
+ hlink->bus = bus;
+ hlink->ml_addr = sbus->mlcap_addr +
+ AZX_ML_BASE +
+ (AZX_ML_INTERVAL *
+ idx);
+ hlink->lcaps = soc_hdac_link_readl(hlink, ML_LCAP);
+ hlink->lsdiid = soc_hdac_link_readw(hlink, ML_LSDIID);
+
+ list_add_tail(&hlink->list, &sbus->hlink_list);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_get_ml_capabilities);
+
+/**
+ * snd_soc_hdac_bus_map_codec_to_link - maps codec to link
+ * @sbus: HD-audio soc core bus
+ * @addr: codec address
+ */
+int snd_soc_hdac_bus_map_codec_to_link(struct soc_hdac_bus *sbus, int addr)
+{
+ struct soc_hdac_link *hlink;
+ struct hdac_bus *bus = &sbus->bus;
+
+ list_for_each_entry(hlink, &sbus->hlink_list, list) {
+ /* check if SDI bit number is same as Codec address */
+ dev_dbg(bus->dev, "lsdid for %d link %x\n", hlink->index, hlink->lsdiid);
+ if (!hlink->lsdiid)
+ continue;
+
+ if (hlink->lsdiid && (0x1 << addr)) {
+ snprintf(hlink->codec[addr],
+ sizeof(hlink->codec[addr]),
+ "codec#%d", addr);
+ break;
+ }
+ }
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_map_codec_to_link);
+
+/**
+ * snd_soc_hdac_bus_get_link_index - get link based on codec name
+ * @sbus: HD-audio soc core bus
+ * @codec_name: codec name
+ */
+struct soc_hdac_link *snd_soc_hdac_bus_get_link(struct soc_hdac_bus *sbus,
+ const char *codec_name)
+{
+ int i;
+ struct soc_hdac_link *hlink = NULL;
+
+ list_for_each_entry(hlink, &sbus->hlink_list, list) {
+ for (i = 0; i < HDA_MAX_CODECS; i++) {
+ if (!hlink->codec[i][0])
+ break;
+ if (!strncmp(hlink->codec[i], codec_name,
+ strlen(codec_name)))
+ return hlink;
+ }
+ }
+ return NULL;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_get_link);
+
+int check_hdac_link_power_active(struct soc_hdac_link *link, bool enable)
+{
+ int timeout;
+ u32 val;
+ int mask = (1 << AZX_MLCTL_CPA);
+
+ udelay(3);
+ timeout = 50;
+
+ do {
+ val = soc_hdac_link_readl(link, ML_LCTL);
+ if (enable) {
+ if (((val & mask) >> AZX_MLCTL_CPA))
+ return 0;
+ } else {
+ if (!((val & mask) >> AZX_MLCTL_CPA))
+ return 0;
+ }
+ udelay(3);
+ } while (--timeout);
+
+ return -EIO;
+}
+
+/**
+ * snd_soc_hdac_bus_link_power_up -power up hda link
+ * @link: HD-audio soc link
+ */
+int snd_soc_hdac_bus_link_power_up(struct soc_hdac_link *link)
+{
+ soc_hdac_link_updatel(link, ML_LCTL, 0, AZX_MLCTL_SPA);
+
+ return check_hdac_link_power_active(link, true);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_link_power_up);
+
+/**
+ * snd_soc_hdac_bus_link_power_down -power down hda link
+ * @link: HD-audio soc link
+ */
+int snd_soc_hdac_bus_link_power_down(struct soc_hdac_link *link)
+{
+ soc_hdac_link_updatel(link, ML_LCTL, AZX_MLCTL_SPA, 0);
+
+ return check_hdac_link_power_active(link, false);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_bus_link_power_down);
+
+MODULE_DESCRIPTION("HDA SoC core");
+MODULE_LICENSE("GPL v2");
new file mode 100644
@@ -0,0 +1,409 @@
+/*
+ * soc-hdac-stream.c - SoC HD-audio stream operations.
+ *
+ * Copyright (C) 2015 Intel Corp
+ * Author: Jeeja KP <jeeja.kp@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/kernel.h>
+#include <linux/delay.h>
+#include <linux/export.h>
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/hdaudio.h>
+#include <sound/hda_register.h>
+#include <sound/soc-hdaudio.h>
+
+/**
+ * snd_soc_hdac_stream_init - initialize each stream (aka device)
+ * @sbus: HD-audio soc core bus
+ * @stream: HD-audio soc core stream object to initialize
+ * @idx: stream index number
+ * @direction: stream direction (SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE)
+ * @tag: the tag id to assign
+ *
+ * Assign the starting bdl address to each stream (device) and initialize.
+ */
+void snd_soc_hdac_stream_init(struct soc_hdac_bus *sbus,
+ struct soc_hdac_stream *stream,
+ int idx, int direction, int tag)
+{
+ struct hdac_bus *bus = &sbus->bus;
+
+ if (sbus->ppcap) {
+ stream->pphc_addr = sbus->ppcap_addr +
+ AZX_PPHC_BASE +
+ AZX_PPHC_INTERVAL *
+ idx;
+
+ stream->pplc_addr = sbus->ppcap_addr +
+ AZX_PPLC_BASE +
+ AZX_PPLC_MULTI *
+ sbus->num_streams +
+ AZX_PPLC_INTERVAL *
+ idx;
+ }
+ stream->decoupled = false;
+ snd_hdac_stream_init(bus, &stream->hstream, idx, direction, tag);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stream_init);
+
+/**
+ * snd_soc_hdac_stream_decouple - decouple the hdac stream
+ * @sbus: HD-audio soc core bus
+ * @stream: HD-audio soc core stream object to initialize
+ * @decouple: flag to decouple
+ */
+void snd_soc_hdac_stream_decouple(struct soc_hdac_bus *sbus,
+ struct soc_hdac_stream *stream, bool decouple)
+{
+ struct hdac_stream *hstream = &stream->hstream;
+ struct hdac_bus *bus = &sbus->bus;
+
+ spin_lock_irq(&bus->reg_lock);
+ if (decouple)
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL, 0,
+ AZX_PPCTL_PROCEN(hstream->index));
+ else
+ soc_hdac_bus_ppcap_updatel(sbus, PP_PPCTL,
+ AZX_PPCTL_PROCEN(hstream->index), 0);
+ stream->decoupled = decouple;
+ spin_unlock_irq(&bus->reg_lock);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stream_decouple);
+
+/**
+ * snd_soc_hdac_linkstream_start - start a stream
+ * @stream: HD-audio soc core stream to start
+ */
+void snd_soc_hdac_link_stream_start(struct soc_hdac_stream *stream)
+{
+ soc_hdac_link_stream_updatel(stream, PPLCCTL,
+ 0, AZX_PPLCCTL_RUN);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_stream_start);
+
+/**
+ * snd_soc_hdac_link_stream_clear - stop a stream DMA
+ * @stream: HD-audio soc core stream to stop
+ */
+void snd_soc_hdac_link_stream_clear(struct soc_hdac_stream *stream)
+{
+ soc_hdac_link_stream_updatel(stream, PPLCCTL,
+ AZX_PPLCCTL_RUN, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_stream_clear);
+
+/**
+ * snd_soc_hdac_link_stream_reset - reset a stream
+ * @stream: HD-audio soc core stream to reset
+ */
+void snd_soc_hdac_link_stream_reset(struct soc_hdac_stream *stream)
+{
+ unsigned char val;
+ int timeout;
+
+ snd_soc_hdac_link_stream_clear(stream);
+
+ soc_hdac_link_stream_updatel(stream, PPLCCTL, 0, AZX_PPLCCTL_STRST);
+ udelay(3);
+ timeout = 50;
+ do {
+ val = soc_hdac_link_stream_readl(stream, PPLCCTL) &
+ AZX_PPLCCTL_STRST;
+ if (val)
+ break;
+ udelay(3);
+ } while (--timeout);
+ val &= ~AZX_PPLCCTL_STRST;
+ soc_hdac_link_stream_writel(stream, PPLCCTL, val);
+ udelay(3);
+
+ timeout = 50;
+ /* waiting for hardware to report that the stream is out of reset */
+ do {
+ val = soc_hdac_link_stream_readl(stream, PPLCCTL) &
+ AZX_PPLCCTL_STRST;
+ if (!val)
+ break;
+ udelay(3);
+ } while (--timeout);
+
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_stream_reset);
+
+/**
+ * snd_soc_hdac_link_stream_setup - set up the SD for streaming
+ * @stream: HD-audio soc core stream to set up
+ * @fmt: stream format
+ */
+int snd_soc_hdac_link_stream_setup(struct soc_hdac_stream *stream, int fmt)
+{
+ struct hdac_stream *hstream = &stream->hstream;
+ unsigned int val;
+
+ /* make sure the run bit is zero for SD */
+ snd_soc_hdac_link_stream_clear(stream);
+ /* program the stream_tag */
+ val = soc_hdac_link_stream_readl(stream, PPLCCTL);
+ val = (val & ~AZX_PPLCCTL_STRM_MASK) |
+ (hstream->stream_tag << AZX_PPLCCTL_STRM_SHIFT);
+ soc_hdac_link_stream_writel(stream, PPLCCTL, val);
+
+ /* program the stream format */
+ soc_hdac_link_stream_writew(stream, PPLCFMT, fmt);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_stream_setup);
+
+/**
+ * snd_soc_hdac_link_set_stream_id - maps stream id to link output
+ * @link: HD-audio soc link to set up
+ * @stream: stream id
+ */
+void snd_soc_hdac_link_set_stream_id(struct soc_hdac_link *link,
+ int stream)
+{
+ soc_hdac_link_updatew(link, ML_LOSIDV, (1 << stream), 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_set_stream_id);
+
+/**
+ * snd_soc_hdac_link_clear_stream_id - maps stream id to link output
+ * @link: HD-audio soc link to set up
+ * @stream: stream id
+ */
+void snd_soc_hdac_link_clear_stream_id(struct soc_hdac_link *link,
+ int stream)
+{
+ soc_hdac_link_updatew(link, ML_LOSIDV, 0, (1 << stream));
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_link_clear_stream_id);
+
+static struct soc_hdac_stream *
+soc_hdac_link_stream_assign(struct soc_hdac_bus *sbus,
+ struct snd_pcm_substream *substream)
+{
+ struct soc_hdac_stream *res = NULL;
+ struct hdac_stream *stream = NULL;
+ struct hdac_bus *hbus = &sbus->bus;
+
+ if (!sbus->ppcap) {
+ dev_err(hbus->dev, "stream type not supported\n");
+ return NULL;
+ }
+
+ list_for_each_entry(stream, &hbus->stream_list, list) {
+ struct soc_hdac_stream *hstream = container_of(stream,
+ struct soc_hdac_stream,
+ hstream);
+ if (stream->direction != substream->stream)
+ continue;
+
+ /* check if decoupled stream and not in use is available */
+ if (hstream->decoupled && !hstream->link_locked) {
+ res = hstream;
+ break;
+ }
+
+ if (!hstream->link_locked) {
+ snd_soc_hdac_stream_decouple(sbus, hstream, true);
+ res = hstream;
+ break;
+ }
+ }
+ if (res) {
+ spin_lock_irq(&hbus->reg_lock);
+ res->link_locked = 1;
+ res->link_substream = substream;
+ spin_unlock_irq(&hbus->reg_lock);
+ }
+ return res;
+}
+
+static struct soc_hdac_stream *
+soc_hdac_host_stream_assign(struct soc_hdac_bus *sbus,
+ struct snd_pcm_substream *substream)
+{
+ struct soc_hdac_stream *res = NULL;
+ struct hdac_stream *stream = NULL;
+ struct hdac_bus *hbus = &sbus->bus;
+ int key;
+
+ if (!sbus->ppcap) {
+ dev_err(hbus->dev, "stream type not supported\n");
+ return NULL;
+ }
+
+ /* make a non-zero unique key for the substream */
+ key = (substream->pcm->device << 16) | (substream->number << 2) |
+ (substream->stream + 1);
+
+ list_for_each_entry(stream, &hbus->stream_list, list) {
+ struct soc_hdac_stream *hstream = container_of(stream,
+ struct soc_hdac_stream,
+ hstream);
+ if (stream->direction != substream->stream)
+ continue;
+
+ if (stream->assigned_key == key) {
+ if (!hstream->decoupled)
+ snd_soc_hdac_stream_decouple(sbus, hstream, true);
+ res = hstream;
+ break;
+ }
+ }
+ if (res) {
+ spin_lock_irq(&hbus->reg_lock);
+ res->hstream.opened = 1;
+ res->hstream.running = 0;
+ res->hstream.assigned_key = key;
+ res->hstream.substream = substream;
+ spin_unlock_irq(&hbus->reg_lock);
+ }
+ return res;
+}
+
+/**
+ * snd_soc_hdac_stream_assign - assign a stream for the PCM
+ * @sbus: HD-audio soc core bus
+ * @substream: PCM substream to assign
+ * @type: type of stream (coupled, host or link stream)
+ *
+ * This assigns the stream based on the type (coupled/host/link), for the
+ * given PCM substream, assigns it and returns the stream object
+ *
+ * coupled: Looks for an unused stream
+ * host: Looks for an unused decoupled host stream
+ * link: Looks for an unused decoupled link stream
+ *
+ * If no stream is free, returns NULL. The function tries to keep using
+ * the same stream object when it's used beforehand. when a stream is
+ * decoupled, it becomes a host stream and link stream.
+ */
+struct soc_hdac_stream *snd_soc_hdac_stream_assign(struct soc_hdac_bus *sbus,
+ struct snd_pcm_substream *substream,
+ int type)
+{
+ struct soc_hdac_stream *hstream = NULL;
+ struct hdac_stream *stream = NULL;
+ struct hdac_bus *hbus = &sbus->bus;
+
+ switch (type) {
+ case HDAC_STREAM_TYPE_COUPLED:
+ stream = snd_hdac_stream_assign(hbus, substream);
+ if (stream)
+ hstream = container_of(stream,
+ struct soc_hdac_stream, hstream);
+ return hstream;
+
+ case HDAC_STREAM_TYPE_HOST:
+ return soc_hdac_host_stream_assign(sbus, substream);
+
+ case HDAC_STREAM_TYPE_LINK:
+ return soc_hdac_link_stream_assign(sbus, substream);
+
+ default:
+ return NULL;
+ }
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stream_assign);
+
+/**
+ * snd_soc_hdac_stream_release - release the assigned stream
+ * @stream: HD-audio soc core stream to release
+ * @type: type of stream (coupled, host or link stream)
+ *
+ * Release the stream that has been assigned by snd_soc_hdac_stream_assign().
+ */
+void snd_soc_hdac_stream_release(struct soc_hdac_stream *stream, int type)
+{
+ struct hdac_bus *bus = stream->hstream.bus;
+ struct soc_hdac_bus *sbus = bus_to_soc_hdac_bus(bus);
+
+ switch (type) {
+ case HDAC_STREAM_TYPE_COUPLED:
+ snd_hdac_stream_release(&stream->hstream);
+ break;
+
+ case HDAC_STREAM_TYPE_HOST:
+ if (stream->decoupled && !stream->link_locked) {
+ snd_soc_hdac_stream_decouple(sbus, stream, false);
+ snd_hdac_stream_release(&stream->hstream);
+ }
+ break;
+ case HDAC_STREAM_TYPE_LINK:
+ if (stream->decoupled)
+ snd_soc_hdac_stream_decouple(sbus, stream, false);
+ spin_lock_irq(&bus->reg_lock);
+ stream->link_locked = 0;
+ stream->link_substream = NULL;
+ spin_unlock_irq(&bus->reg_lock);
+ break;
+ default:
+ dev_dbg(bus->dev, "Invalid type\n");
+ }
+
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stream_release);
+
+/**
+ * snd_soc_hdac_stream_spbcap_enable - enable SPIB for a stream
+ * @sbus: HD-audio soc core bus
+ * @enable: flag to enable/disable SPIB
+ * @index: stream index for which SPIB need to be enabled
+ */
+void snd_soc_hdac_stream_spbcap_enable(struct soc_hdac_bus *sbus,
+ bool enable, int index)
+{
+ u32 mask = 0;
+ u32 register_mask = 0;
+ struct hdac_bus *bus = &sbus->bus;
+
+ if (!sbus->spbcap) {
+ dev_err(bus->dev, "Address of SPB capability is NULL");
+ return;
+ }
+
+ mask |= (1 << index);
+
+ register_mask = soc_hdac_bus_spbcap_readl(sbus, SPB_SPBFCCTL);
+
+ mask |= register_mask;
+
+ if (enable)
+ soc_hdac_bus_spbcap_updatel(sbus, SPB_SPBFCCTL, 0, mask);
+ else
+ soc_hdac_bus_spbcap_updatel(sbus, SPB_SPBFCCTL, mask, 0);
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stream_spbcap_enable);
+
+/**
+ * snd_soc_hdac_stop_all_stream - stop all stream if running
+ * @sbus: HD-audio soc core bus
+ */
+void snd_soc_hdac_stop_streams(struct soc_hdac_bus *sbus)
+{
+ struct hdac_bus *bus = hdac_bus(sbus);
+ struct hdac_stream *stream;
+
+ if (bus->chip_init) {
+ list_for_each_entry(stream, &bus->stream_list, list)
+ snd_hdac_stream_stop(stream);
+ snd_hdac_bus_stop_chip(bus);
+ }
+}
+EXPORT_SYMBOL_GPL(snd_soc_hdac_stop_streams);