diff options
Diffstat (limited to 'sound/soc/intel/baytrail/sst-baytrail-ipc.c')
| -rw-r--r-- | sound/soc/intel/baytrail/sst-baytrail-ipc.c | 777 |
1 files changed, 777 insertions, 0 deletions
diff --git a/sound/soc/intel/baytrail/sst-baytrail-ipc.c b/sound/soc/intel/baytrail/sst-baytrail-ipc.c new file mode 100644 index 000000000000..1efb33b36303 --- /dev/null +++ b/sound/soc/intel/baytrail/sst-baytrail-ipc.c @@ -0,0 +1,777 @@ +/* + * Intel Baytrail SST IPC Support + * Copyright (c) 2014, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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/types.h> +#include <linux/kernel.h> +#include <linux/list.h> +#include <linux/device.h> +#include <linux/wait.h> +#include <linux/spinlock.h> +#include <linux/workqueue.h> +#include <linux/export.h> +#include <linux/slab.h> +#include <linux/delay.h> +#include <linux/platform_device.h> +#include <linux/kthread.h> +#include <linux/firmware.h> +#include <linux/io.h> +#include <asm/div64.h> + +#include "sst-baytrail-ipc.h" +#include "../common/sst-dsp.h" +#include "../common/sst-dsp-priv.h" +#include "../common/sst-ipc.h" + +/* IPC message timeout */ +#define IPC_TIMEOUT_MSECS 300 +#define IPC_BOOT_MSECS 200 + +#define IPC_EMPTY_LIST_SIZE 8 + +/* IPC header bits */ +#define IPC_HEADER_MSG_ID_MASK 0xff +#define IPC_HEADER_MSG_ID(x) ((x) & IPC_HEADER_MSG_ID_MASK) +#define IPC_HEADER_STR_ID_SHIFT 8 +#define IPC_HEADER_STR_ID_MASK 0x1f +#define IPC_HEADER_STR_ID(x) (((x) & 0x1f) << IPC_HEADER_STR_ID_SHIFT) +#define IPC_HEADER_LARGE_SHIFT 13 +#define IPC_HEADER_LARGE(x) (((x) & 0x1) << IPC_HEADER_LARGE_SHIFT) +#define IPC_HEADER_DATA_SHIFT 16 +#define IPC_HEADER_DATA_MASK 0x3fff +#define IPC_HEADER_DATA(x) (((x) & 0x3fff) << IPC_HEADER_DATA_SHIFT) + +/* mask for differentiating between notification and reply message */ +#define IPC_NOTIFICATION (0x1 << 7) + +/* I2L Stream config/control msgs */ +#define IPC_IA_ALLOC_STREAM 0x20 +#define IPC_IA_FREE_STREAM 0x21 +#define IPC_IA_PAUSE_STREAM 0x24 +#define IPC_IA_RESUME_STREAM 0x25 +#define IPC_IA_DROP_STREAM 0x26 +#define IPC_IA_START_STREAM 0x30 + +/* notification messages */ +#define IPC_IA_FW_INIT_CMPLT 0x81 +#define IPC_SST_PERIOD_ELAPSED 0x97 + +/* IPC messages between host and ADSP */ +struct sst_byt_address_info { + u32 addr; + u32 size; +} __packed; + +struct sst_byt_str_type { + u8 codec_type; + u8 str_type; + u8 operation; + u8 protected_str; + u8 time_slots; + u8 reserved; + u16 result; +} __packed; + +struct sst_byt_pcm_params { + u8 num_chan; + u8 pcm_wd_sz; + u8 use_offload_path; + u8 reserved; + u32 sfreq; + u8 channel_map[8]; +} __packed; + +struct sst_byt_frames_info { + u16 num_entries; + u16 rsrvd; + u32 frag_size; + struct sst_byt_address_info ring_buf_info[8]; +} __packed; + +struct sst_byt_alloc_params { + struct sst_byt_str_type str_type; + struct sst_byt_pcm_params pcm_params; + struct sst_byt_frames_info frame_info; +} __packed; + +struct sst_byt_alloc_response { + struct sst_byt_str_type str_type; + u8 reserved[88]; +} __packed; + +struct sst_byt_start_stream_params { + u32 byte_offset; +} __packed; + +struct sst_byt_tstamp { + u64 ring_buffer_counter; + u64 hardware_counter; + u64 frames_decoded; + u64 bytes_decoded; + u64 bytes_copied; + u32 sampling_frequency; + u32 channel_peak[8]; +} __packed; + +struct sst_byt_fw_version { + u8 build; + u8 minor; + u8 major; + u8 type; +} __packed; + +struct sst_byt_fw_build_info { + u8 date[16]; + u8 time[16]; +} __packed; + +struct sst_byt_fw_init { + struct sst_byt_fw_version fw_version; + struct sst_byt_fw_build_info build_info; + u16 result; + u8 module_id; + u8 debug_info; +} __packed; + +struct sst_byt_stream; +struct sst_byt; + +/* stream infomation */ +struct sst_byt_stream { + struct list_head node; + + /* configuration */ + struct sst_byt_alloc_params request; + struct sst_byt_alloc_response reply; + + /* runtime info */ + struct sst_byt *byt; + int str_id; + bool commited; + bool running; + + /* driver callback */ + u32 (*notify_position)(struct sst_byt_stream *stream, void *data); + void *pdata; +}; + +/* SST Baytrail IPC data */ +struct sst_byt { + struct device *dev; + struct sst_dsp *dsp; + + /* stream */ + struct list_head stream_list; + + /* boot */ + wait_queue_head_t boot_wait; + bool boot_complete; + struct sst_fw *fw; + + /* IPC messaging */ + struct sst_generic_ipc ipc; +}; + +static inline u64 sst_byt_header(int msg_id, int data, bool large, int str_id) +{ + u64 header; + + header = IPC_HEADER_MSG_ID(msg_id) | + IPC_HEADER_STR_ID(str_id) | + IPC_HEADER_LARGE(large) | + IPC_HEADER_DATA(data) | + SST_BYT_IPCX_BUSY; + + return header; +} + +static inline u16 sst_byt_header_msg_id(u64 header) +{ + return header & IPC_HEADER_MSG_ID_MASK; +} + +static inline u8 sst_byt_header_str_id(u64 header) +{ + return (header >> IPC_HEADER_STR_ID_SHIFT) & IPC_HEADER_STR_ID_MASK; +} + +static inline u16 sst_byt_header_data(u64 header) +{ + return (header >> IPC_HEADER_DATA_SHIFT) & IPC_HEADER_DATA_MASK; +} + +static struct sst_byt_stream *sst_byt_get_stream(struct sst_byt *byt, + int stream_id) +{ + struct sst_byt_stream *stream; + + list_for_each_entry(stream, &byt->stream_list, node) { + if (stream->str_id == stream_id) + return stream; + } + + return NULL; +} + +static void sst_byt_stream_update(struct sst_byt *byt, struct ipc_message *msg) +{ + struct sst_byt_stream *stream; + u64 header = msg->header; + u8 stream_id = sst_byt_header_str_id(header); + u8 stream_msg = sst_byt_header_msg_id(header); + + stream = sst_byt_get_stream(byt, stream_id); + if (stream == NULL) + return; + + switch (stream_msg) { + case IPC_IA_DROP_STREAM: + case IPC_IA_PAUSE_STREAM: + case IPC_IA_FREE_STREAM: + stream->running = false; + break; + case IPC_IA_START_STREAM: + case IPC_IA_RESUME_STREAM: + stream->running = true; + break; + } +} + +static int sst_byt_process_reply(struct sst_byt *byt, u64 header) +{ + struct ipc_message *msg; + + msg = sst_ipc_reply_find_msg(&byt->ipc, header); + if (msg == NULL) + return 1; + + if (header & IPC_HEADER_LARGE(true)) { + msg->rx_size = sst_byt_header_data(header); + sst_dsp_inbox_read(byt->dsp, msg->rx_data, msg->rx_size); + } + + /* update any stream states */ + sst_byt_stream_update(byt, msg); + + list_del(&msg->list); + /* wake up */ + sst_ipc_tx_msg_reply_complete(&byt->ipc, msg); + + return 1; +} + +static void sst_byt_fw_ready(struct sst_byt *byt, u64 header) +{ + dev_dbg(byt->dev, "ipc: DSP is ready 0x%llX\n", header); + + byt->boot_complete = true; + wake_up(&byt->boot_wait); +} + +static int sst_byt_process_notification(struct sst_byt *byt, + unsigned long *flags) +{ + struct sst_dsp *sst = byt->dsp; + struct sst_byt_stream *stream; + u64 header; + u8 msg_id, stream_id; + int handled = 1; + + header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); + msg_id = sst_byt_header_msg_id(header); + + switch (msg_id) { + case IPC_SST_PERIOD_ELAPSED: + stream_id = sst_byt_header_str_id(header); + stream = sst_byt_get_stream(byt, stream_id); + if (stream && stream->running && stream->notify_position) { + spin_unlock_irqrestore(&sst->spinlock, *flags); + stream->notify_position(stream, stream->pdata); + spin_lock_irqsave(&sst->spinlock, *flags); + } + break; + case IPC_IA_FW_INIT_CMPLT: + sst_byt_fw_ready(byt, header); + break; + } + + return handled; +} + +static irqreturn_t sst_byt_irq_thread(int irq, void *context) +{ + struct sst_dsp *sst = (struct sst_dsp *) context; + struct sst_byt *byt = sst_dsp_get_thread_context(sst); + struct sst_generic_ipc *ipc = &byt->ipc; + u64 header; + unsigned long flags; + + spin_lock_irqsave(&sst->spinlock, flags); + + header = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); + if (header & SST_BYT_IPCD_BUSY) { + if (header & IPC_NOTIFICATION) { + /* message from ADSP */ + sst_byt_process_notification(byt, &flags); + } else { + /* reply from ADSP */ + sst_byt_process_reply(byt, header); + } + /* + * clear IPCD BUSY bit and set DONE bit. Tell DSP we have + * processed the message and can accept new. Clear data part + * of the header + */ + sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCD, + SST_BYT_IPCD_DONE | SST_BYT_IPCD_BUSY | + IPC_HEADER_DATA(IPC_HEADER_DATA_MASK), + SST_BYT_IPCD_DONE); + /* unmask message request interrupts */ + sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX, + SST_BYT_IMRX_REQUEST, 0); + } + + spin_unlock_irqrestore(&sst->spinlock, flags); + + /* continue to send any remaining messages... */ + queue_kthread_work(&ipc->kworker, &ipc->kwork); + + return IRQ_HANDLED; +} + +/* stream API */ +struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id, + u32 (*notify_position)(struct sst_byt_stream *stream, void *data), + void *data) +{ + struct sst_byt_stream *stream; + struct sst_dsp *sst = byt->dsp; + unsigned long flags; + + stream = kzalloc(sizeof(*stream), GFP_KERNEL); + if (stream == NULL) + return NULL; + + spin_lock_irqsave(&sst->spinlock, flags); + list_add(&stream->node, &byt->stream_list); + stream->notify_position = notify_position; + stream->pdata = data; + stream->byt = byt; + stream->str_id = id; + spin_unlock_irqrestore(&sst->spinlock, flags); + + return stream; +} + +int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream, + int bits) +{ + stream->request.pcm_params.pcm_wd_sz = bits; + return 0; +} + +int sst_byt_stream_set_channels(struct sst_byt *byt, + struct sst_byt_stream *stream, u8 channels) +{ + stream->request.pcm_params.num_chan = channels; + return 0; +} + +int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream, + unsigned int rate) +{ + stream->request.pcm_params.sfreq = rate; + return 0; +} + +/* stream sonfiguration */ +int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream, + int codec_type, int stream_type, int operation) +{ + stream->request.str_type.codec_type = codec_type; + stream->request.str_type.str_type = stream_type; + stream->request.str_type.operation = operation; + stream->request.str_type.time_slots = 0xc; + + return 0; +} + +int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream, + uint32_t buffer_addr, uint32_t buffer_size) +{ + stream->request.frame_info.num_entries = 1; + stream->request.frame_info.ring_buf_info[0].addr = buffer_addr; + stream->request.frame_info.ring_buf_info[0].size = buffer_size; + /* calculate bytes per 4 ms fragment */ + stream->request.frame_info.frag_size = + stream->request.pcm_params.sfreq * + stream->request.pcm_params.num_chan * + stream->request.pcm_params.pcm_wd_sz / 8 * + 4 / 1000; + return 0; +} + +int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream) +{ + struct sst_byt_alloc_params *str_req = &stream->request; + struct sst_byt_alloc_response *reply = &stream->reply; + u64 header; + int ret; + + header = sst_byt_header(IPC_IA_ALLOC_STREAM, + sizeof(*str_req) + sizeof(u32), + true, stream->str_id); + ret = sst_ipc_tx_message_wait(&byt->ipc, header, str_req, + sizeof(*str_req), + reply, sizeof(*reply)); + if (ret < 0) { + dev_err(byt->dev, "ipc: error stream commit failed\n"); + return ret; + } + + stream->commited = true; + + return 0; +} + +int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream) +{ + u64 header; + int ret = 0; + struct sst_dsp *sst = byt->dsp; + unsigned long flags; + + if (!stream->commited) + goto out; + + header = sst_byt_header(IPC_IA_FREE_STREAM, 0, false, stream->str_id); + ret = sst_ipc_tx_message_wait(&byt->ipc, header, NULL, 0, NULL, 0); + if (ret < 0) { + dev_err(byt->dev, "ipc: free stream %d failed\n", + stream->str_id); + return -EAGAIN; + } + + stream->commited = false; +out: + spin_lock_irqsave(&sst->spinlock, flags); + list_del(&stream->node); + kfree(stream); + spin_unlock_irqrestore(&sst->spinlock, flags); + + return ret; +} + +static int sst_byt_stream_operations(struct sst_byt *byt, int type, + int stream_id, int wait) +{ + u64 header; + + header = sst_byt_header(type, 0, false, stream_id); + if (wait) + return sst_ipc_tx_message_wait(&byt->ipc, header, NULL, + 0, NULL, 0); + else + return sst_ipc_tx_message_nowait(&byt->ipc, header, + NULL, 0); +} + +/* stream ALSA trigger operations */ +int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream, + u32 start_offset) +{ + struct sst_byt_start_stream_params start_stream; + void *tx_msg; + size_t size; + u64 header; + int ret; + + start_stream.byte_offset = start_offset; + header = sst_byt_header(IPC_IA_START_STREAM, + sizeof(start_stream) + sizeof(u32), + true, stream->str_id); + tx_msg = &start_stream; + size = sizeof(start_stream); + + ret = sst_ipc_tx_message_nowait(&byt->ipc, header, tx_msg, size); + if (ret < 0) + dev_err(byt->dev, "ipc: error failed to start stream %d\n", + stream->str_id); + + return ret; +} + +int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream) +{ + int ret; + + /* don't stop streams that are not commited */ + if (!stream->commited) + return 0; + + ret = sst_byt_stream_operations(byt, IPC_IA_DROP_STREAM, + stream->str_id, 0); + if (ret < 0) + dev_err(byt->dev, "ipc: error failed to stop stream %d\n", + stream->str_id); + return ret; +} + +int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream) +{ + int ret; + + ret = sst_byt_stream_operations(byt, IPC_IA_PAUSE_STREAM, + stream->str_id, 0); + if (ret < 0) + dev_err(byt->dev, "ipc: error failed to pause stream %d\n", + stream->str_id); + + return ret; +} + +int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream) +{ + int ret; + + ret = sst_byt_stream_operations(byt, IPC_IA_RESUME_STREAM, + stream->str_id, 0); + if (ret < 0) + dev_err(byt->dev, "ipc: error failed to resume stream %d\n", + stream->str_id); + + return ret; +} + +int sst_byt_get_dsp_position(struct sst_byt *byt, + struct sst_byt_stream *stream, int buffer_size) +{ + struct sst_dsp *sst = byt->dsp; + struct sst_byt_tstamp fw_tstamp; + u8 str_id = stream->str_id; + u32 tstamp_offset; + + tstamp_offset = SST_BYT_TIMESTAMP_OFFSET + str_id * sizeof(fw_tstamp); + memcpy_fromio(&fw_tstamp, + sst->addr.lpe + tstamp_offset, sizeof(fw_tstamp)); + + return do_div(fw_tstamp.ring_buffer_counter, buffer_size); +} + +struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt) +{ + return byt->dsp; +} + +static struct sst_dsp_device byt_dev = { + .thread = sst_byt_irq_thread, + .ops = &sst_byt_ops, +}; + +int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata) +{ + struct sst_byt *byt = pdata->dsp; + + dev_dbg(byt->dev, "dsp reset\n"); + sst_dsp_reset(byt->dsp); + sst_ipc_drop_all(&byt->ipc); + dev_dbg(byt->dev, "dsp in reset\n"); + + dev_dbg(byt->dev, "free all blocks and unload fw\n"); + sst_fw_unload(byt->fw); + + return 0; +} +EXPORT_SYMBOL_GPL(sst_byt_dsp_suspend_late); + +int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata) +{ + struct sst_byt *byt = pdata->dsp; + int ret; + + dev_dbg(byt->dev, "reload dsp fw\n"); + + sst_dsp_reset(byt->dsp); + + ret = sst_fw_reload(byt->fw); + if (ret < 0) { + dev_err(dev, "error: failed to reload firmware\n"); + return ret; + } + + /* wait for DSP boot completion */ + byt->boot_complete = false; + sst_dsp_boot(byt->dsp); + dev_dbg(byt->dev, "dsp booting...\n"); + + return 0; +} +EXPORT_SYMBOL_GPL(sst_byt_dsp_boot); + +int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata) +{ + struct sst_byt *byt = pdata->dsp; + int err; + + dev_dbg(byt->dev, "wait for dsp reboot\n"); + + err = wait_event_timeout(byt->boot_wait, byt->boot_complete, + msecs_to_jiffies(IPC_BOOT_MSECS)); + if (err == 0) { + dev_err(byt->dev, "ipc: error DSP boot timeout\n"); + return -EIO; + } + + dev_dbg(byt->dev, "dsp rebooted\n"); + return 0; +} +EXPORT_SYMBOL_GPL(sst_byt_dsp_wait_for_ready); + +static void byt_tx_msg(struct sst_generic_ipc *ipc, struct ipc_message *msg) +{ + if (msg->header & IPC_HEADER_LARGE(true)) + sst_dsp_outbox_write(ipc->dsp, msg->tx_data, msg->tx_size); + + sst_dsp_shim_write64_unlocked(ipc->dsp, SST_IPCX, msg->header); +} + +static void byt_shim_dbg(struct sst_generic_ipc *ipc, const char *text) +{ + struct sst_dsp *sst = ipc->dsp; + u64 isr, ipcd, imrx, ipcx; + + ipcx = sst_dsp_shim_read64_unlocked(sst, SST_IPCX); + isr = sst_dsp_shim_read64_unlocked(sst, SST_ISRX); + ipcd = sst_dsp_shim_read64_unlocked(sst, SST_IPCD); + imrx = sst_dsp_shim_read64_unlocked(sst, SST_IMRX); + + dev_err(ipc->dev, + "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n", + text, ipcx, isr, ipcd, imrx); +} + +static void byt_tx_data_copy(struct ipc_message *msg, char *tx_data, + size_t tx_size) +{ + /* msg content = lower 32-bit of the header + data */ + *(u32 *)msg->tx_data = (u32)(msg->header & (u32)-1); + memcpy(msg->tx_data + sizeof(u32), tx_data, tx_size); + msg->tx_size += sizeof(u32); +} + +static u64 byt_reply_msg_match(u64 header, u64 *mask) +{ + /* match reply to message sent based on msg and stream IDs */ + *mask = IPC_HEADER_MSG_ID_MASK | + IPC_HEADER_STR_ID_MASK << IPC_HEADER_STR_ID_SHIFT; + header &= *mask; + + return header; +} + +int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata) +{ + struct sst_byt *byt; + struct sst_generic_ipc *ipc; + struct sst_fw *byt_sst_fw; + struct sst_byt_fw_init init; + int err; + + dev_dbg(dev, "initialising Byt DSP IPC\n"); + + byt = devm_kzalloc(dev, sizeof(*byt), GFP_KERNEL); + if (byt == NULL) + return -ENOMEM; + + ipc = &byt->ipc; + ipc->dev = dev; + ipc->ops.tx_msg = byt_tx_msg; + ipc->ops.shim_dbg = byt_shim_dbg; + ipc->ops.tx_data_copy = byt_tx_data_copy; + ipc->ops.reply_msg_match = byt_reply_msg_match; + + err = sst_ipc_init(ipc); + if (err != 0) + goto ipc_init_err; + + INIT_LIST_HEAD(&byt->stream_list); + init_waitqueue_head(&byt->boot_wait); + byt_dev.thread_context = byt; + + /* init SST shim */ + byt->dsp = sst_dsp_new(dev, &byt_dev, pdata); + if (byt->dsp == NULL) { + err = -ENODEV; + goto dsp_new_err; + } + + ipc->dsp = byt->dsp; + + /* keep the DSP in reset state for base FW loading */ + sst_dsp_reset(byt->dsp); + + byt_sst_fw = sst_fw_new(byt->dsp, pdata->fw, byt); + if (byt_sst_fw == NULL) { + err = -ENODEV; + dev_err(dev, "error: failed to load firmware\n"); + goto fw_err; + } + + /* wait for DSP boot completion */ + sst_dsp_boot(byt->dsp); + err = wait_event_timeout(byt->boot_wait, byt->boot_complete, + msecs_to_jiffies(IPC_BOOT_MSECS)); + if (err == 0) { + err = -EIO; + dev_err(byt->dev, "ipc: error DSP boot timeout\n"); + goto boot_err; + } + + /* show firmware information */ + sst_dsp_inbox_read(byt->dsp, &init, sizeof(init)); + dev_info(byt->dev, "FW version: %02x.%02x.%02x.%02x\n", + init.fw_version.major, init.fw_version.minor, + init.fw_version.build, init.fw_version.type); + dev_info(byt->dev, "Build type: %x\n", init.fw_version.type); + dev_info(byt->dev, "Build date: %s %s\n", + init.build_info.date, init.build_info.time); + + pdata->dsp = byt; + byt->fw = byt_sst_fw; + + return 0; + +boot_err: + sst_dsp_reset(byt->dsp); + sst_fw_free(byt_sst_fw); +fw_err: + sst_dsp_free(byt->dsp); +dsp_new_err: + sst_ipc_fini(ipc); +ipc_init_err: + kfree(byt); + + return err; +} +EXPORT_SYMBOL_GPL(sst_byt_dsp_init); + +void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata) +{ + struct sst_byt *byt = pdata->dsp; + + sst_dsp_reset(byt->dsp); + sst_fw_free_all(byt->dsp); + sst_dsp_free(byt->dsp); + sst_ipc_fini(&byt->ipc); +} +EXPORT_SYMBOL_GPL(sst_byt_dsp_free); |