[Feature]add MT2731_MP2_MR2_SVN388 baseline version
Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/include/sound/hdaudio.h b/src/kernel/linux/v4.14/include/sound/hdaudio.h
new file mode 100644
index 0000000..5d0bf16
--- /dev/null
+++ b/src/kernel/linux/v4.14/include/sound/hdaudio.h
@@ -0,0 +1,574 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * HD-audio core stuff
+ */
+
+#ifndef __SOUND_HDAUDIO_H
+#define __SOUND_HDAUDIO_H
+
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/timecounter.h>
+#include <sound/core.h>
+#include <sound/memalloc.h>
+#include <sound/hda_verbs.h>
+#include <drm/i915_component.h>
+
+/* codec node id */
+typedef u16 hda_nid_t;
+
+struct hdac_bus;
+struct hdac_stream;
+struct hdac_device;
+struct hdac_driver;
+struct hdac_widget_tree;
+struct hda_device_id;
+
+/*
+ * exported bus type
+ */
+extern struct bus_type snd_hda_bus_type;
+
+/*
+ * generic arrays
+ */
+struct snd_array {
+ unsigned int used;
+ unsigned int alloced;
+ unsigned int elem_size;
+ unsigned int alloc_align;
+ void *list;
+};
+
+/*
+ * HD-audio codec base device
+ */
+struct hdac_device {
+ struct device dev;
+ int type;
+ struct hdac_bus *bus;
+ unsigned int addr; /* codec address */
+ struct list_head list; /* list point for bus codec_list */
+
+ hda_nid_t afg; /* AFG node id */
+ hda_nid_t mfg; /* MFG node id */
+
+ /* ids */
+ unsigned int vendor_id;
+ unsigned int subsystem_id;
+ unsigned int revision_id;
+ unsigned int afg_function_id;
+ unsigned int mfg_function_id;
+ unsigned int afg_unsol:1;
+ unsigned int mfg_unsol:1;
+
+ unsigned int power_caps; /* FG power caps */
+
+ const char *vendor_name; /* codec vendor name */
+ const char *chip_name; /* codec chip name */
+
+ /* verb exec op override */
+ int (*exec_verb)(struct hdac_device *dev, unsigned int cmd,
+ unsigned int flags, unsigned int *res);
+
+ /* widgets */
+ unsigned int num_nodes;
+ hda_nid_t start_nid, end_nid;
+
+ /* misc flags */
+ atomic_t in_pm; /* suspend/resume being performed */
+ bool link_power_control:1;
+
+ /* sysfs */
+ struct hdac_widget_tree *widgets;
+
+ /* regmap */
+ struct regmap *regmap;
+ struct snd_array vendor_verbs;
+ bool lazy_cache:1; /* don't wake up for writes */
+ bool caps_overwriting:1; /* caps overwrite being in process */
+ bool cache_coef:1; /* cache COEF read/write too */
+};
+
+/* device/driver type used for matching */
+enum {
+ HDA_DEV_CORE,
+ HDA_DEV_LEGACY,
+ HDA_DEV_ASOC,
+};
+
+/* direction */
+enum {
+ HDA_INPUT, HDA_OUTPUT
+};
+
+#define dev_to_hdac_dev(_dev) container_of(_dev, struct hdac_device, dev)
+
+int snd_hdac_device_init(struct hdac_device *dev, struct hdac_bus *bus,
+ const char *name, unsigned int addr);
+void snd_hdac_device_exit(struct hdac_device *dev);
+int snd_hdac_device_register(struct hdac_device *codec);
+void snd_hdac_device_unregister(struct hdac_device *codec);
+int snd_hdac_device_set_chip_name(struct hdac_device *codec, const char *name);
+int snd_hdac_codec_modalias(struct hdac_device *hdac, char *buf, size_t size);
+
+int snd_hdac_refresh_widgets(struct hdac_device *codec);
+int snd_hdac_refresh_widget_sysfs(struct hdac_device *codec);
+
+unsigned int snd_hdac_make_cmd(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int verb, unsigned int parm);
+int snd_hdac_exec_verb(struct hdac_device *codec, unsigned int cmd,
+ unsigned int flags, unsigned int *res);
+int snd_hdac_read(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int verb, unsigned int parm, unsigned int *res);
+int _snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid, int parm,
+ unsigned int *res);
+int snd_hdac_read_parm_uncached(struct hdac_device *codec, hda_nid_t nid,
+ int parm);
+int snd_hdac_override_parm(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int parm, unsigned int val);
+int snd_hdac_get_connections(struct hdac_device *codec, hda_nid_t nid,
+ hda_nid_t *conn_list, int max_conns);
+int snd_hdac_get_sub_nodes(struct hdac_device *codec, hda_nid_t nid,
+ hda_nid_t *start_id);
+unsigned int snd_hdac_calc_stream_format(unsigned int rate,
+ unsigned int channels,
+ unsigned int format,
+ unsigned int maxbps,
+ unsigned short spdif_ctls);
+int snd_hdac_query_supported_pcm(struct hdac_device *codec, hda_nid_t nid,
+ u32 *ratesp, u64 *formatsp, unsigned int *bpsp);
+bool snd_hdac_is_supported_format(struct hdac_device *codec, hda_nid_t nid,
+ unsigned int format);
+
+int snd_hdac_codec_read(struct hdac_device *hdac, hda_nid_t nid,
+ int flags, unsigned int verb, unsigned int parm);
+int snd_hdac_codec_write(struct hdac_device *hdac, hda_nid_t nid,
+ int flags, unsigned int verb, unsigned int parm);
+bool snd_hdac_check_power_state(struct hdac_device *hdac,
+ hda_nid_t nid, unsigned int target_state);
+/**
+ * snd_hdac_read_parm - read a codec parameter
+ * @codec: the codec object
+ * @nid: NID to read a parameter
+ * @parm: parameter to read
+ *
+ * Returns -1 for error. If you need to distinguish the error more
+ * strictly, use _snd_hdac_read_parm() directly.
+ */
+static inline int snd_hdac_read_parm(struct hdac_device *codec, hda_nid_t nid,
+ int parm)
+{
+ unsigned int val;
+
+ return _snd_hdac_read_parm(codec, nid, parm, &val) < 0 ? -1 : val;
+}
+
+#ifdef CONFIG_PM
+int snd_hdac_power_up(struct hdac_device *codec);
+int snd_hdac_power_down(struct hdac_device *codec);
+int snd_hdac_power_up_pm(struct hdac_device *codec);
+int snd_hdac_power_down_pm(struct hdac_device *codec);
+int snd_hdac_keep_power_up(struct hdac_device *codec);
+#else
+static inline int snd_hdac_power_up(struct hdac_device *codec) { return 0; }
+static inline int snd_hdac_power_down(struct hdac_device *codec) { return 0; }
+static inline int snd_hdac_power_up_pm(struct hdac_device *codec) { return 0; }
+static inline int snd_hdac_power_down_pm(struct hdac_device *codec) { return 0; }
+static inline int snd_hdac_keep_power_up(struct hdac_device *codec) { return 0; }
+#endif
+
+/*
+ * HD-audio codec base driver
+ */
+struct hdac_driver {
+ struct device_driver driver;
+ int type;
+ const struct hda_device_id *id_table;
+ int (*match)(struct hdac_device *dev, struct hdac_driver *drv);
+ void (*unsol_event)(struct hdac_device *dev, unsigned int event);
+};
+
+#define drv_to_hdac_driver(_drv) container_of(_drv, struct hdac_driver, driver)
+
+const struct hda_device_id *
+hdac_get_device_id(struct hdac_device *hdev, struct hdac_driver *drv);
+
+/*
+ * Bus verb operators
+ */
+struct hdac_bus_ops {
+ /* send a single command */
+ int (*command)(struct hdac_bus *bus, unsigned int cmd);
+ /* get a response from the last command */
+ int (*get_response)(struct hdac_bus *bus, unsigned int addr,
+ unsigned int *res);
+ /* control the link power */
+ int (*link_power)(struct hdac_bus *bus, bool enable);
+};
+
+/*
+ * Lowlevel I/O operators
+ */
+struct hdac_io_ops {
+ /* mapped register accesses */
+ void (*reg_writel)(u32 value, u32 __iomem *addr);
+ u32 (*reg_readl)(u32 __iomem *addr);
+ void (*reg_writew)(u16 value, u16 __iomem *addr);
+ u16 (*reg_readw)(u16 __iomem *addr);
+ void (*reg_writeb)(u8 value, u8 __iomem *addr);
+ u8 (*reg_readb)(u8 __iomem *addr);
+ /* Allocation ops */
+ int (*dma_alloc_pages)(struct hdac_bus *bus, int type, size_t size,
+ struct snd_dma_buffer *buf);
+ void (*dma_free_pages)(struct hdac_bus *bus,
+ struct snd_dma_buffer *buf);
+};
+
+#define HDA_UNSOL_QUEUE_SIZE 64
+#define HDA_MAX_CODECS 8 /* limit by controller side */
+
+/*
+ * CORB/RIRB
+ *
+ * Each CORB entry is 4byte, RIRB is 8byte
+ */
+struct hdac_rb {
+ __le32 *buf; /* virtual address of CORB/RIRB buffer */
+ dma_addr_t addr; /* physical address of CORB/RIRB buffer */
+ unsigned short rp, wp; /* RIRB read/write pointers */
+ int cmds[HDA_MAX_CODECS]; /* number of pending requests */
+ u32 res[HDA_MAX_CODECS]; /* last read value */
+};
+
+/*
+ * HD-audio bus base driver
+ *
+ * @ppcap: pp capabilities pointer
+ * @spbcap: SPIB capabilities pointer
+ * @mlcap: MultiLink capabilities pointer
+ * @gtscap: gts capabilities pointer
+ * @drsmcap: dma resume capabilities pointer
+ */
+struct hdac_bus {
+ struct device *dev;
+ const struct hdac_bus_ops *ops;
+ const struct hdac_io_ops *io_ops;
+
+ /* h/w resources */
+ unsigned long addr;
+ void __iomem *remap_addr;
+ int irq;
+
+ void __iomem *ppcap;
+ void __iomem *spbcap;
+ void __iomem *mlcap;
+ void __iomem *gtscap;
+ void __iomem *drsmcap;
+
+ /* codec linked list */
+ struct list_head codec_list;
+ unsigned int num_codecs;
+
+ /* link caddr -> codec */
+ struct hdac_device *caddr_tbl[HDA_MAX_CODEC_ADDRESS + 1];
+
+ /* unsolicited event queue */
+ u32 unsol_queue[HDA_UNSOL_QUEUE_SIZE * 2]; /* ring buffer */
+ unsigned int unsol_rp, unsol_wp;
+ struct work_struct unsol_work;
+
+ /* bit flags of detected codecs */
+ unsigned long codec_mask;
+
+ /* bit flags of powered codecs */
+ unsigned long codec_powered;
+
+ /* CORB/RIRB */
+ struct hdac_rb corb;
+ struct hdac_rb rirb;
+ unsigned int last_cmd[HDA_MAX_CODECS]; /* last sent command */
+
+ /* CORB/RIRB and position buffers */
+ struct snd_dma_buffer rb;
+ struct snd_dma_buffer posbuf;
+
+ /* hdac_stream linked list */
+ struct list_head stream_list;
+
+ /* operation state */
+ bool chip_init:1; /* h/w initialized */
+
+ /* behavior flags */
+ bool sync_write:1; /* sync after verb write */
+ bool use_posbuf:1; /* use position buffer */
+ bool snoop:1; /* enable snooping */
+ bool align_bdle_4k:1; /* BDLE align 4K boundary */
+ bool reverse_assign:1; /* assign devices in reverse order */
+ bool corbrp_self_clear:1; /* CORBRP clears itself after reset */
+
+ int bdl_pos_adj; /* BDL position adjustment */
+
+ /* locks */
+ spinlock_t reg_lock;
+ struct mutex cmd_mutex;
+
+ /* i915 component interface */
+ struct i915_audio_component *audio_component;
+ int i915_power_refcount;
+};
+
+int snd_hdac_bus_init(struct hdac_bus *bus, struct device *dev,
+ const struct hdac_bus_ops *ops,
+ const struct hdac_io_ops *io_ops);
+void snd_hdac_bus_exit(struct hdac_bus *bus);
+int snd_hdac_bus_exec_verb(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+int snd_hdac_bus_exec_verb_unlocked(struct hdac_bus *bus, unsigned int addr,
+ unsigned int cmd, unsigned int *res);
+void snd_hdac_bus_queue_event(struct hdac_bus *bus, u32 res, u32 res_ex);
+
+int snd_hdac_bus_add_device(struct hdac_bus *bus, struct hdac_device *codec);
+void snd_hdac_bus_remove_device(struct hdac_bus *bus,
+ struct hdac_device *codec);
+
+static inline void snd_hdac_codec_link_up(struct hdac_device *codec)
+{
+ set_bit(codec->addr, &codec->bus->codec_powered);
+}
+
+static inline void snd_hdac_codec_link_down(struct hdac_device *codec)
+{
+ clear_bit(codec->addr, &codec->bus->codec_powered);
+}
+
+int snd_hdac_bus_send_cmd(struct hdac_bus *bus, unsigned int val);
+int snd_hdac_bus_get_response(struct hdac_bus *bus, unsigned int addr,
+ unsigned int *res);
+int snd_hdac_bus_parse_capabilities(struct hdac_bus *bus);
+int snd_hdac_link_power(struct hdac_device *codec, bool enable);
+
+bool snd_hdac_bus_init_chip(struct hdac_bus *bus, bool full_reset);
+void snd_hdac_bus_stop_chip(struct hdac_bus *bus);
+void snd_hdac_bus_init_cmd_io(struct hdac_bus *bus);
+void snd_hdac_bus_stop_cmd_io(struct hdac_bus *bus);
+void snd_hdac_bus_enter_link_reset(struct hdac_bus *bus);
+void snd_hdac_bus_exit_link_reset(struct hdac_bus *bus);
+int snd_hdac_bus_reset_link(struct hdac_bus *bus, bool full_reset);
+
+void snd_hdac_bus_update_rirb(struct hdac_bus *bus);
+int snd_hdac_bus_handle_stream_irq(struct hdac_bus *bus, unsigned int status,
+ void (*ack)(struct hdac_bus *,
+ struct hdac_stream *));
+
+int snd_hdac_bus_alloc_stream_pages(struct hdac_bus *bus);
+void snd_hdac_bus_free_stream_pages(struct hdac_bus *bus);
+
+/*
+ * macros for easy use
+ */
+#define _snd_hdac_chip_writeb(chip, reg, value) \
+ ((chip)->io_ops->reg_writeb(value, (chip)->remap_addr + (reg)))
+#define _snd_hdac_chip_readb(chip, reg) \
+ ((chip)->io_ops->reg_readb((chip)->remap_addr + (reg)))
+#define _snd_hdac_chip_writew(chip, reg, value) \
+ ((chip)->io_ops->reg_writew(value, (chip)->remap_addr + (reg)))
+#define _snd_hdac_chip_readw(chip, reg) \
+ ((chip)->io_ops->reg_readw((chip)->remap_addr + (reg)))
+#define _snd_hdac_chip_writel(chip, reg, value) \
+ ((chip)->io_ops->reg_writel(value, (chip)->remap_addr + (reg)))
+#define _snd_hdac_chip_readl(chip, reg) \
+ ((chip)->io_ops->reg_readl((chip)->remap_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define snd_hdac_chip_writel(chip, reg, value) \
+ _snd_hdac_chip_writel(chip, AZX_REG_ ## reg, value)
+#define snd_hdac_chip_writew(chip, reg, value) \
+ _snd_hdac_chip_writew(chip, AZX_REG_ ## reg, value)
+#define snd_hdac_chip_writeb(chip, reg, value) \
+ _snd_hdac_chip_writeb(chip, AZX_REG_ ## reg, value)
+#define snd_hdac_chip_readl(chip, reg) \
+ _snd_hdac_chip_readl(chip, AZX_REG_ ## reg)
+#define snd_hdac_chip_readw(chip, reg) \
+ _snd_hdac_chip_readw(chip, AZX_REG_ ## reg)
+#define snd_hdac_chip_readb(chip, reg) \
+ _snd_hdac_chip_readb(chip, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define snd_hdac_chip_updatel(chip, reg, mask, val) \
+ snd_hdac_chip_writel(chip, reg, \
+ (snd_hdac_chip_readl(chip, reg) & ~(mask)) | (val))
+#define snd_hdac_chip_updatew(chip, reg, mask, val) \
+ snd_hdac_chip_writew(chip, reg, \
+ (snd_hdac_chip_readw(chip, reg) & ~(mask)) | (val))
+#define snd_hdac_chip_updateb(chip, reg, mask, val) \
+ snd_hdac_chip_writeb(chip, reg, \
+ (snd_hdac_chip_readb(chip, reg) & ~(mask)) | (val))
+
+/*
+ * HD-audio stream
+ */
+struct hdac_stream {
+ struct hdac_bus *bus;
+ struct snd_dma_buffer bdl; /* BDL buffer */
+ __le32 *posbuf; /* position buffer pointer */
+ int direction; /* playback / capture (SNDRV_PCM_STREAM_*) */
+
+ unsigned int bufsize; /* size of the play buffer in bytes */
+ unsigned int period_bytes; /* size of the period in bytes */
+ unsigned int frags; /* number for period in the play buffer */
+ unsigned int fifo_size; /* FIFO size */
+
+ void __iomem *sd_addr; /* stream descriptor pointer */
+
+ u32 sd_int_sta_mask; /* stream int status mask */
+
+ /* pcm support */
+ struct snd_pcm_substream *substream; /* assigned substream,
+ * set in PCM open
+ */
+ unsigned int format_val; /* format value to be set in the
+ * controller and the codec
+ */
+ unsigned char stream_tag; /* assigned stream */
+ unsigned char index; /* stream index */
+ int assigned_key; /* last device# key assigned to */
+
+ bool opened:1;
+ bool running:1;
+ bool prepared:1;
+ bool no_period_wakeup:1;
+ bool locked:1;
+
+ /* timestamp */
+ unsigned long start_wallclk; /* start + minimum wallclk */
+ unsigned long period_wallclk; /* wallclk for period */
+ struct timecounter tc;
+ struct cyclecounter cc;
+ int delay_negative_threshold;
+
+ struct list_head list;
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+ /* DSP access mutex */
+ struct mutex dsp_mutex;
+#endif
+};
+
+void snd_hdac_stream_init(struct hdac_bus *bus, struct hdac_stream *azx_dev,
+ int idx, int direction, int tag);
+struct hdac_stream *snd_hdac_stream_assign(struct hdac_bus *bus,
+ struct snd_pcm_substream *substream);
+void snd_hdac_stream_release(struct hdac_stream *azx_dev);
+struct hdac_stream *snd_hdac_get_stream(struct hdac_bus *bus,
+ int dir, int stream_tag);
+
+int snd_hdac_stream_setup(struct hdac_stream *azx_dev);
+void snd_hdac_stream_cleanup(struct hdac_stream *azx_dev);
+int snd_hdac_stream_setup_periods(struct hdac_stream *azx_dev);
+int snd_hdac_stream_set_params(struct hdac_stream *azx_dev,
+ unsigned int format_val);
+void snd_hdac_stream_start(struct hdac_stream *azx_dev, bool fresh_start);
+void snd_hdac_stream_clear(struct hdac_stream *azx_dev);
+void snd_hdac_stream_stop(struct hdac_stream *azx_dev);
+void snd_hdac_stream_reset(struct hdac_stream *azx_dev);
+void snd_hdac_stream_sync_trigger(struct hdac_stream *azx_dev, bool set,
+ unsigned int streams, unsigned int reg);
+void snd_hdac_stream_sync(struct hdac_stream *azx_dev, bool start,
+ unsigned int streams);
+void snd_hdac_stream_timecounter_init(struct hdac_stream *azx_dev,
+ unsigned int streams);
+/*
+ * macros for easy use
+ */
+#define _snd_hdac_stream_write(type, dev, reg, value) \
+ ((dev)->bus->io_ops->reg_write ## type(value, (dev)->sd_addr + (reg)))
+#define _snd_hdac_stream_read(type, dev, reg) \
+ ((dev)->bus->io_ops->reg_read ## type((dev)->sd_addr + (reg)))
+
+/* read/write a register, pass without AZX_REG_ prefix */
+#define snd_hdac_stream_writel(dev, reg, value) \
+ _snd_hdac_stream_write(l, dev, AZX_REG_ ## reg, value)
+#define snd_hdac_stream_writew(dev, reg, value) \
+ _snd_hdac_stream_write(w, dev, AZX_REG_ ## reg, value)
+#define snd_hdac_stream_writeb(dev, reg, value) \
+ _snd_hdac_stream_write(b, dev, AZX_REG_ ## reg, value)
+#define snd_hdac_stream_readl(dev, reg) \
+ _snd_hdac_stream_read(l, dev, AZX_REG_ ## reg)
+#define snd_hdac_stream_readw(dev, reg) \
+ _snd_hdac_stream_read(w, dev, AZX_REG_ ## reg)
+#define snd_hdac_stream_readb(dev, reg) \
+ _snd_hdac_stream_read(b, dev, AZX_REG_ ## reg)
+
+/* update a register, pass without AZX_REG_ prefix */
+#define snd_hdac_stream_updatel(dev, reg, mask, val) \
+ snd_hdac_stream_writel(dev, reg, \
+ (snd_hdac_stream_readl(dev, reg) & \
+ ~(mask)) | (val))
+#define snd_hdac_stream_updatew(dev, reg, mask, val) \
+ snd_hdac_stream_writew(dev, reg, \
+ (snd_hdac_stream_readw(dev, reg) & \
+ ~(mask)) | (val))
+#define snd_hdac_stream_updateb(dev, reg, mask, val) \
+ snd_hdac_stream_writeb(dev, reg, \
+ (snd_hdac_stream_readb(dev, reg) & \
+ ~(mask)) | (val))
+
+#ifdef CONFIG_SND_HDA_DSP_LOADER
+/* DSP lock helpers */
+#define snd_hdac_dsp_lock_init(dev) mutex_init(&(dev)->dsp_mutex)
+#define snd_hdac_dsp_lock(dev) mutex_lock(&(dev)->dsp_mutex)
+#define snd_hdac_dsp_unlock(dev) mutex_unlock(&(dev)->dsp_mutex)
+#define snd_hdac_stream_is_locked(dev) ((dev)->locked)
+/* DSP loader helpers */
+int snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
+ unsigned int byte_size, struct snd_dma_buffer *bufp);
+void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start);
+void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
+ struct snd_dma_buffer *dmab);
+#else /* CONFIG_SND_HDA_DSP_LOADER */
+#define snd_hdac_dsp_lock_init(dev) do {} while (0)
+#define snd_hdac_dsp_lock(dev) do {} while (0)
+#define snd_hdac_dsp_unlock(dev) do {} while (0)
+#define snd_hdac_stream_is_locked(dev) 0
+
+static inline int
+snd_hdac_dsp_prepare(struct hdac_stream *azx_dev, unsigned int format,
+ unsigned int byte_size, struct snd_dma_buffer *bufp)
+{
+ return 0;
+}
+
+static inline void snd_hdac_dsp_trigger(struct hdac_stream *azx_dev, bool start)
+{
+}
+
+static inline void snd_hdac_dsp_cleanup(struct hdac_stream *azx_dev,
+ struct snd_dma_buffer *dmab)
+{
+}
+#endif /* CONFIG_SND_HDA_DSP_LOADER */
+
+
+/*
+ * generic array helpers
+ */
+void *snd_array_new(struct snd_array *array);
+void snd_array_free(struct snd_array *array);
+static inline void snd_array_init(struct snd_array *array, unsigned int size,
+ unsigned int align)
+{
+ array->elem_size = size;
+ array->alloc_align = align;
+}
+
+static inline void *snd_array_elem(struct snd_array *array, unsigned int idx)
+{
+ return array->list + idx * array->elem_size;
+}
+
+static inline unsigned int snd_array_index(struct snd_array *array, void *ptr)
+{
+ return (unsigned long)(ptr - array->list) / array->elem_size;
+}
+
+#endif /* __SOUND_HDAUDIO_H */