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ASoC: Intel: Remove baytrail solution 

sound/soc/intel/baytrail is a niche solution which supports limited
number of BYT products - as described by
snd_soc_acpi_intel_baytrail_legacy_machines table. For a long time it's
deprecated in favor of sound/soc/intel/atom solution with SOF providing
support for some products too effectively rendering /baytrail/ redundant.
Remove deprecated code from ASoC tree.

Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Liam Girdwood <liam.r.girdwood@intel.com>
Link: https://lore.kernel.org/r/20201006064907.16277-5-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Cezary Rojewski 2020-10-06 08:48:58 +02:00 коммит произвёл Mark Brown
Родитель 3056cb0082
Коммит 07833cd056
Не найден ключ, соответствующий данной подписи
Идентификатор ключа GPG: 24D68B725D5487D0
7 изменённых файлов: 0 добавлений и 1672 удалений
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13
sound/soc/intel/Kconfig
Просмотреть файл

@ -63,19 +63,6 @@ config SND_SOC_INTEL_HASWELL
tristate
select SND_SOC_INTEL_CATPT
config SND_SOC_INTEL_BAYTRAIL
tristate "Baytrail (legacy) Platforms"
depends on DMADEVICES && ACPI && SND_SST_ATOM_HIFI2_PLATFORM=n && SND_SOC_SOF_BAYTRAIL=n
select SND_SOC_INTEL_SST
select SND_SOC_INTEL_SST_ACPI
select SND_SOC_INTEL_SST_FIRMWARE
select SND_SOC_ACPI_INTEL_MATCH
help
If you have a Intel Baytrail platform connected to an I2S codec,
then enable this option by saying Y or m. This was typically used
for Baytrail Chromebooks but this option is now deprecated and is
not recommended, use SND_SST_ATOM_HIFI2_PLATFORM instead.
config SND_SST_ATOM_HIFI2_PLATFORM
tristate
select SND_SOC_COMPRESS

1
sound/soc/intel/Makefile
Просмотреть файл

@ -3,7 +3,6 @@
obj-$(CONFIG_SND_SOC) += common/
# Platform Support
obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += baytrail/
obj-$(CONFIG_SND_SST_ATOM_HIFI2_PLATFORM) += atom/
obj-$(CONFIG_SND_SOC_INTEL_CATPT) += catpt/
obj-$(CONFIG_SND_SOC_INTEL_SKYLAKE) += skylake/

5
sound/soc/intel/baytrail/Makefile
Просмотреть файл

@ -1,5 +0,0 @@
# SPDX-License-Identifier: GPL-2.0-only
snd-soc-sst-baytrail-pcm-objs := \
sst-baytrail-ipc.o sst-baytrail-pcm.o sst-baytrail-dsp.o
obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += snd-soc-sst-baytrail-pcm.o

358
sound/soc/intel/baytrail/sst-baytrail-dsp.c
Просмотреть файл

@ -1,358 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel Baytrail SST DSP driver
* Copyright (c) 2014, Intel Corporation.
*/
#include <linux/delay.h>
#include <linux/fs.h>
#include <linux/slab.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/firmware.h>
#include "../common/sst-dsp.h"
#include "../common/sst-dsp-priv.h"
#include "sst-baytrail-ipc.h"
#define SST_BYT_FW_SIGNATURE_SIZE 4
#define SST_BYT_FW_SIGN "$SST"
#define SST_BYT_IRAM_OFFSET 0xC0000
#define SST_BYT_DRAM_OFFSET 0x100000
#define SST_BYT_SHIM_OFFSET 0x140000
enum sst_ram_type {
SST_BYT_IRAM = 1,
SST_BYT_DRAM = 2,
SST_BYT_CACHE = 3,
};
struct dma_block_info {
enum sst_ram_type type; /* IRAM/DRAM */
u32 size; /* Bytes */
u32 ram_offset; /* Offset in I/DRAM */
u32 rsvd; /* Reserved field */
};
struct fw_header {
unsigned char signature[SST_BYT_FW_SIGNATURE_SIZE];
u32 file_size; /* size of fw minus this header */
u32 modules; /* # of modules */
u32 file_format; /* version of header format */
u32 reserved[4];
};
struct sst_byt_fw_module_header {
unsigned char signature[SST_BYT_FW_SIGNATURE_SIZE];
u32 mod_size; /* size of module */
u32 blocks; /* # of blocks */
u32 type; /* codec type, pp lib */
u32 entry_point;
};
static int sst_byt_parse_module(struct sst_dsp *dsp, struct sst_fw *fw,
struct sst_byt_fw_module_header *module)
{
struct dma_block_info *block;
struct sst_module *mod;
struct sst_module_template template;
int count;
memset(&template, 0, sizeof(template));
template.id = module->type;
template.entry = module->entry_point;
mod = sst_module_new(fw, &template, NULL);
if (mod == NULL)
return -ENOMEM;
block = (void *)module + sizeof(*module);
for (count = 0; count < module->blocks; count++) {
if (block->size <= 0) {
dev_err(dsp->dev, "block %d size invalid\n", count);
return -EINVAL;
}
switch (block->type) {
case SST_BYT_IRAM:
mod->offset = block->ram_offset +
dsp->addr.iram_offset;
mod->type = SST_MEM_IRAM;
break;
case SST_BYT_DRAM:
mod->offset = block->ram_offset +
dsp->addr.dram_offset;
mod->type = SST_MEM_DRAM;
break;
case SST_BYT_CACHE:
mod->offset = block->ram_offset +
(dsp->addr.fw_ext - dsp->addr.lpe);
mod->type = SST_MEM_CACHE;
break;
default:
dev_err(dsp->dev, "wrong ram type 0x%x in block0x%x\n",
block->type, count);
return -EINVAL;
}
mod->size = block->size;
mod->data = (void *)block + sizeof(*block);
sst_module_alloc_blocks(mod);
block = (void *)block + sizeof(*block) + block->size;
}
return 0;
}
static int sst_byt_parse_fw_image(struct sst_fw *sst_fw)
{
struct fw_header *header;
struct sst_byt_fw_module_header *module;
struct sst_dsp *dsp = sst_fw->dsp;
int ret, count;
/* Read the header information from the data pointer */
header = (struct fw_header *)sst_fw->dma_buf;
/* verify FW */
if ((strncmp(header->signature, SST_BYT_FW_SIGN, 4) != 0) ||
(sst_fw->size != header->file_size + sizeof(*header))) {
/* Invalid FW signature */
dev_err(dsp->dev, "Invalid FW sign/filesize mismatch\n");
return -EINVAL;
}
dev_dbg(dsp->dev,
"header sign=%4s size=0x%x modules=0x%x fmt=0x%x size=%zu\n",
header->signature, header->file_size, header->modules,
header->file_format, sizeof(*header));
module = (void *)sst_fw->dma_buf + sizeof(*header);
for (count = 0; count < header->modules; count++) {
/* module */
ret = sst_byt_parse_module(dsp, sst_fw, module);
if (ret < 0) {
dev_err(dsp->dev, "invalid module %d\n", count);
return ret;
}
module = (void *)module + sizeof(*module) + module->mod_size;
}
return 0;
}
static void sst_byt_dump_shim(struct sst_dsp *sst)
{
int i;
u64 reg;
for (i = 0; i <= 0xF0; i += 8) {
reg = sst_dsp_shim_read64_unlocked(sst, i);
if (reg)
dev_dbg(sst->dev, "shim 0x%2.2x value 0x%16.16llx\n",
i, reg);
}
for (i = 0x00; i <= 0xff; i += 4) {
reg = readl(sst->addr.pci_cfg + i);
if (reg)
dev_dbg(sst->dev, "pci 0x%2.2x value 0x%8.8x\n",
i, (u32)reg);
}
}
static irqreturn_t sst_byt_irq(int irq, void *context)
{
struct sst_dsp *sst = (struct sst_dsp *) context;
u64 isrx;
irqreturn_t ret = IRQ_NONE;
spin_lock(&sst->spinlock);
isrx = sst_dsp_shim_read64_unlocked(sst, SST_ISRX);
if (isrx & SST_ISRX_DONE) {
/* ADSP has processed the message request from IA */
sst_dsp_shim_update_bits64_unlocked(sst, SST_IPCX,
SST_BYT_IPCX_DONE, 0);
ret = IRQ_WAKE_THREAD;
}
if (isrx & SST_BYT_ISRX_REQUEST) {
/* mask message request from ADSP and do processing later */
sst_dsp_shim_update_bits64_unlocked(sst, SST_IMRX,
SST_BYT_IMRX_REQUEST,
SST_BYT_IMRX_REQUEST);
ret = IRQ_WAKE_THREAD;
}
spin_unlock(&sst->spinlock);
return ret;
}
static void sst_byt_boot(struct sst_dsp *sst)
{
int tries = 10;
/*
* save the physical address of extended firmware block in the first
* 4 bytes of the mailbox
*/
memcpy_toio(sst->addr.lpe + SST_BYT_MAILBOX_OFFSET,
&sst->pdata->fw_base, sizeof(u32));
/* release stall and wait to unstall */
sst_dsp_shim_update_bits64(sst, SST_CSR, SST_BYT_CSR_STALL, 0x0);
while (tries--) {
if (!(sst_dsp_shim_read64(sst, SST_CSR) &
SST_BYT_CSR_PWAITMODE))
break;
msleep(100);
}
if (tries < 0) {
dev_err(sst->dev, "unable to start DSP\n");
sst_byt_dump_shim(sst);
}
}
static void sst_byt_reset(struct sst_dsp *sst)
{
/* put DSP into reset, set reset vector and stall */
sst_dsp_shim_update_bits64(sst, SST_CSR,
SST_BYT_CSR_RST | SST_BYT_CSR_VECTOR_SEL | SST_BYT_CSR_STALL,
SST_BYT_CSR_RST | SST_BYT_CSR_VECTOR_SEL | SST_BYT_CSR_STALL);
udelay(10);
/* take DSP out of reset and keep stalled for FW loading */
sst_dsp_shim_update_bits64(sst, SST_CSR, SST_BYT_CSR_RST, 0);
}
struct sst_adsp_memregion {
u32 start;
u32 end;
int blocks;
enum sst_mem_type type;
};
/* BYT test stuff */
static const struct sst_adsp_memregion byt_region[] = {
{0xC0000, 0x100000, 8, SST_MEM_IRAM}, /* I-SRAM - 8 * 32kB */
{0x100000, 0x140000, 8, SST_MEM_DRAM}, /* D-SRAM0 - 8 * 32kB */
};
static int sst_byt_resource_map(struct sst_dsp *sst, struct sst_pdata *pdata)
{
sst->addr.lpe_base = pdata->lpe_base;
sst->addr.lpe = ioremap(pdata->lpe_base, pdata->lpe_size);
if (!sst->addr.lpe)
return -ENODEV;
/* ADSP PCI MMIO config space */
sst->addr.pci_cfg = ioremap(pdata->pcicfg_base, pdata->pcicfg_size);
if (!sst->addr.pci_cfg) {
iounmap(sst->addr.lpe);
return -ENODEV;
}
/* SST Extended FW allocation */
sst->addr.fw_ext = ioremap(pdata->fw_base, pdata->fw_size);
if (!sst->addr.fw_ext) {
iounmap(sst->addr.pci_cfg);
iounmap(sst->addr.lpe);
return -ENODEV;
}
/* SST Shim */
sst->addr.shim = sst->addr.lpe + sst->addr.shim_offset;
sst_dsp_mailbox_init(sst, SST_BYT_MAILBOX_OFFSET + 0x204,
SST_BYT_IPC_MAX_PAYLOAD_SIZE,
SST_BYT_MAILBOX_OFFSET,
SST_BYT_IPC_MAX_PAYLOAD_SIZE);
sst->irq = pdata->irq;
return 0;
}
static int sst_byt_init(struct sst_dsp *sst, struct sst_pdata *pdata)
{
const struct sst_adsp_memregion *region;
struct device *dev;
int ret = -ENODEV, i, j, region_count;
u32 offset, size;
dev = sst->dev;
switch (sst->id) {
case SST_DEV_ID_BYT:
region = byt_region;
region_count = ARRAY_SIZE(byt_region);
sst->addr.iram_offset = SST_BYT_IRAM_OFFSET;
sst->addr.dram_offset = SST_BYT_DRAM_OFFSET;
sst->addr.shim_offset = SST_BYT_SHIM_OFFSET;
break;
default:
dev_err(dev, "failed to get mem resources\n");
return ret;
}
ret = sst_byt_resource_map(sst, pdata);
if (ret < 0) {
dev_err(dev, "failed to map resources\n");
return ret;
}
ret = dma_coerce_mask_and_coherent(sst->dma_dev, DMA_BIT_MASK(32));
if (ret)
return ret;
/* enable Interrupt from both sides */
sst_dsp_shim_update_bits64(sst, SST_IMRX, 0x3, 0x0);
sst_dsp_shim_update_bits64(sst, SST_IMRD, 0x3, 0x0);
/* register DSP memory blocks - ideally we should get this from ACPI */
for (i = 0; i < region_count; i++) {
offset = region[i].start;
size = (region[i].end - region[i].start) / region[i].blocks;
/* register individual memory blocks */
for (j = 0; j < region[i].blocks; j++) {
sst_mem_block_register(sst, offset, size,
region[i].type, NULL, j, sst);
offset += size;
}
}
return 0;
}
static void sst_byt_free(struct sst_dsp *sst)
{
sst_mem_block_unregister_all(sst);
iounmap(sst->addr.lpe);
iounmap(sst->addr.pci_cfg);
iounmap(sst->addr.fw_ext);
}
struct sst_ops sst_byt_ops = {
.reset = sst_byt_reset,
.boot = sst_byt_boot,
.write = sst_shim32_write,
.read = sst_shim32_read,
.write64 = sst_shim32_write64,
.read64 = sst_shim32_read64,
.ram_read = sst_memcpy_fromio_32,
.ram_write = sst_memcpy_toio_32,
.irq_handler = sst_byt_irq,
.init = sst_byt_init,
.free = sst_byt_free,
.parse_fw = sst_byt_parse_fw_image,
};

772
sound/soc/intel/baytrail/sst-baytrail-ipc.c
Просмотреть файл

@ -1,772 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel Baytrail SST IPC Support
* Copyright (c) 2014, Intel Corporation.
*/
#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/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)
{
return IPC_HEADER_MSG_ID(msg_id) | IPC_HEADER_STR_ID(str_id) |
IPC_HEADER_LARGE(large) | IPC_HEADER_DATA(data) |
SST_BYT_IPCX_BUSY;
}
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->tx.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;
msg->rx.header = header;
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;
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 1;
}
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... */
schedule_work(&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_ipc_message request, reply = {0};
int ret;
request.header = sst_byt_header(IPC_IA_ALLOC_STREAM,
sizeof(stream->request) + sizeof(u32),
true, stream->str_id);
request.data = &stream->request;
request.size = sizeof(stream->request);
reply.data = &stream->reply;
reply.size = sizeof(stream->reply);
ret = sst_ipc_tx_message_wait(&byt->ipc, request, &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)
{
struct sst_ipc_message request = {0};
int ret = 0;
struct sst_dsp *sst = byt->dsp;
unsigned long flags;
if (!stream->commited)
goto out;
request.header = sst_byt_header(IPC_IA_FREE_STREAM,
0, false, stream->str_id);
ret = sst_ipc_tx_message_wait(&byt->ipc, request, NULL);
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)
{
struct sst_ipc_message request = {0};
request.header = sst_byt_header(type, 0, false, stream_id);
if (wait)
return sst_ipc_tx_message_wait(&byt->ipc, request, NULL);
else
return sst_ipc_tx_message_nowait(&byt->ipc, request);
}
/* 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;
struct sst_ipc_message request;
int ret;
start_stream.byte_offset = start_offset;
request.header = sst_byt_header(IPC_IA_START_STREAM,
sizeof(start_stream) + sizeof(u32),
true, stream->str_id);
request.data = &start_stream;
request.size = sizeof(start_stream);
ret = sst_ipc_tx_message_nowait(&byt->ipc, request);
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->tx.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->tx.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->tx.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;
}
static bool byt_is_dsp_busy(struct sst_dsp *dsp)
{
u64 ipcx;
ipcx = sst_dsp_shim_read64_unlocked(dsp, SST_IPCX);
return (ipcx & (SST_BYT_IPCX_BUSY | SST_BYT_IPCX_DONE));
}
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;
byt->dev = dev;
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;
ipc->ops.is_dsp_busy = byt_is_dsp_busy;
ipc->tx_data_max_size = IPC_MAX_MAILBOX_BYTES;
ipc->rx_data_max_size = IPC_MAX_MAILBOX_BYTES;
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:
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);

64
sound/soc/intel/baytrail/sst-baytrail-ipc.h
Просмотреть файл

@ -1,64 +0,0 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Intel Baytrail SST IPC Support
* Copyright (c) 2014, Intel Corporation.
*/
#ifndef __SST_BYT_IPC_H
#define __SST_BYT_IPC_H
#include <linux/types.h>
struct sst_byt;
struct sst_byt_stream;
struct sst_pdata;
extern struct sst_ops sst_byt_ops;
#define SST_BYT_MAILBOX_OFFSET 0x144000
#define SST_BYT_TIMESTAMP_OFFSET (SST_BYT_MAILBOX_OFFSET + 0x800)
/**
* Upfront defined maximum message size that is
* expected by the in/out communication pipes in FW.
*/
#define SST_BYT_IPC_MAX_PAYLOAD_SIZE 200
/* stream API */
struct sst_byt_stream *sst_byt_stream_new(struct sst_byt *byt, int id,
uint32_t (*notify_position)(struct sst_byt_stream *stream, void *data),
void *data);
/* stream configuration */
int sst_byt_stream_set_bits(struct sst_byt *byt, struct sst_byt_stream *stream,
int bits);
int sst_byt_stream_set_channels(struct sst_byt *byt,
struct sst_byt_stream *stream, u8 channels);
int sst_byt_stream_set_rate(struct sst_byt *byt, struct sst_byt_stream *stream,
unsigned int rate);
int sst_byt_stream_type(struct sst_byt *byt, struct sst_byt_stream *stream,
int codec_type, int stream_type, int operation);
int sst_byt_stream_buffer(struct sst_byt *byt, struct sst_byt_stream *stream,
uint32_t buffer_addr, uint32_t buffer_size);
int sst_byt_stream_commit(struct sst_byt *byt, struct sst_byt_stream *stream);
int sst_byt_stream_free(struct sst_byt *byt, struct sst_byt_stream *stream);
/* stream ALSA trigger operations */
int sst_byt_stream_start(struct sst_byt *byt, struct sst_byt_stream *stream,
u32 start_offset);
int sst_byt_stream_stop(struct sst_byt *byt, struct sst_byt_stream *stream);
int sst_byt_stream_pause(struct sst_byt *byt, struct sst_byt_stream *stream);
int sst_byt_stream_resume(struct sst_byt *byt, struct sst_byt_stream *stream);
int sst_byt_get_dsp_position(struct sst_byt *byt,
struct sst_byt_stream *stream, int buffer_size);
/* init */
int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata);
void sst_byt_dsp_free(struct device *dev, struct sst_pdata *pdata);
struct sst_dsp *sst_byt_get_dsp(struct sst_byt *byt);
int sst_byt_dsp_suspend_late(struct device *dev, struct sst_pdata *pdata);
int sst_byt_dsp_boot(struct device *dev, struct sst_pdata *pdata);
int sst_byt_dsp_wait_for_ready(struct device *dev, struct sst_pdata *pdata);
#endif

459
sound/soc/intel/baytrail/sst-baytrail-pcm.c
Просмотреть файл

@ -1,459 +0,0 @@
// SPDX-License-Identifier: GPL-2.0-only
/*
* Intel Baytrail SST PCM Support
* Copyright (c) 2014, Intel Corporation.
*/
#include <linux/module.h>
#include <linux/dma-mapping.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/soc.h>
#include "sst-baytrail-ipc.h"
#include "../common/sst-dsp-priv.h"
#include "../common/sst-dsp.h"
#define DRV_NAME "byt-dai"
#define BYT_PCM_COUNT 2
static const struct snd_pcm_hardware sst_byt_pcm_hardware = {
.info = SNDRV_PCM_INFO_MMAP |
SNDRV_PCM_INFO_MMAP_VALID |
SNDRV_PCM_INFO_INTERLEAVED |
SNDRV_PCM_INFO_PAUSE |
SNDRV_PCM_INFO_RESUME,
.formats = SNDRV_PCM_FMTBIT_S16_LE |
SNDRV_PCM_FMTBIT_S24_LE,
.period_bytes_min = 384,
.period_bytes_max = 48000,
.periods_min = 2,
.periods_max = 250,
.buffer_bytes_max = 96000,
};
/* private data for each PCM DSP stream */
struct sst_byt_pcm_data {
struct sst_byt_stream *stream;
struct snd_pcm_substream *substream;
struct mutex mutex;
/* latest DSP DMA hw pointer */
u32 hw_ptr;
struct work_struct work;
};
/* private data for the driver */
struct sst_byt_priv_data {
/* runtime DSP */
struct sst_byt *byt;
/* DAI data */
struct sst_byt_pcm_data pcm[BYT_PCM_COUNT];
/* flag indicating is stream context restore needed after suspend */
bool restore_stream;
};
/* this may get called several times by oss emulation */
static int sst_byt_pcm_hw_params(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
u32 rate, bits;
u8 channels;
int ret, playback = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
dev_dbg(rtd->dev, "PCM: hw_params, pcm_data %p\n", pcm_data);
ret = sst_byt_stream_type(byt, pcm_data->stream,
1, 1, !playback);
if (ret < 0) {
dev_err(rtd->dev, "failed to set stream format %d\n", ret);
return ret;
}
rate = params_rate(params);
ret = sst_byt_stream_set_rate(byt, pcm_data->stream, rate);
if (ret < 0) {
dev_err(rtd->dev, "could not set rate %d\n", rate);
return ret;
}
bits = snd_pcm_format_width(params_format(params));
ret = sst_byt_stream_set_bits(byt, pcm_data->stream, bits);
if (ret < 0) {
dev_err(rtd->dev, "could not set formats %d\n",
params_rate(params));
return ret;
}
channels = (u8)(params_channels(params) & 0xF);
ret = sst_byt_stream_set_channels(byt, pcm_data->stream, channels);
if (ret < 0) {
dev_err(rtd->dev, "could not set channels %d\n",
params_rate(params));
return ret;
}
ret = sst_byt_stream_buffer(byt, pcm_data->stream,
substream->dma_buffer.addr,
params_buffer_bytes(params));
if (ret < 0) {
dev_err(rtd->dev, "PCM: failed to set DMA buffer %d\n", ret);
return ret;
}
ret = sst_byt_stream_commit(byt, pcm_data->stream);
if (ret < 0) {
dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret);
return ret;
}
return 0;
}
static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
int ret;
/* commit stream using existing stream params */
ret = sst_byt_stream_commit(byt, pcm_data->stream);
if (ret < 0) {
dev_err(rtd->dev, "PCM: failed stream commit %d\n", ret);
return ret;
}
sst_byt_stream_start(byt, pcm_data->stream, pcm_data->hw_ptr);
dev_dbg(rtd->dev, "stream context restored at offset %d\n",
pcm_data->hw_ptr);
return 0;
}
static void sst_byt_pcm_work(struct work_struct *work)
{
struct sst_byt_pcm_data *pcm_data =
container_of(work, struct sst_byt_pcm_data, work);
if (snd_pcm_running(pcm_data->substream))
sst_byt_pcm_restore_stream_context(pcm_data->substream);
}
static int sst_byt_pcm_trigger(struct snd_soc_component *component,
struct snd_pcm_substream *substream, int cmd)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
dev_dbg(rtd->dev, "PCM: trigger %d\n", cmd);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
pcm_data->hw_ptr = 0;
sst_byt_stream_start(byt, pcm_data->stream, 0);
break;
case SNDRV_PCM_TRIGGER_RESUME:
if (pdata->restore_stream)
schedule_work(&pcm_data->work);
else
sst_byt_stream_resume(byt, pcm_data->stream);
break;
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
sst_byt_stream_resume(byt, pcm_data->stream);
break;
case SNDRV_PCM_TRIGGER_STOP:
sst_byt_stream_stop(byt, pcm_data->stream);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
pdata->restore_stream = false;
/* fallthrough */
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
sst_byt_stream_pause(byt, pcm_data->stream);
break;
default:
break;
}
return 0;
}
static u32 byt_notify_pointer(struct sst_byt_stream *stream, void *data)
{
struct sst_byt_pcm_data *pcm_data = data;
struct snd_pcm_substream *substream = pcm_data->substream;
struct snd_pcm_runtime *runtime = substream->runtime;
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component = snd_soc_rtdcom_lookup(rtd, DRV_NAME);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt *byt = pdata->byt;
u32 pos, hw_pos;
hw_pos = sst_byt_get_dsp_position(byt, pcm_data->stream,
snd_pcm_lib_buffer_bytes(substream));
pcm_data->hw_ptr = hw_pos;
pos = frames_to_bytes(runtime,
(runtime->control->appl_ptr %
runtime->buffer_size));
dev_dbg(rtd->dev, "PCM: App/DMA pointer %u/%u bytes\n", pos, hw_pos);
snd_pcm_period_elapsed(substream);
return pos;
}
static snd_pcm_uframes_t sst_byt_pcm_pointer(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_pcm_runtime *runtime = substream->runtime;
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
dev_dbg(rtd->dev, "PCM: DMA pointer %u bytes\n", pcm_data->hw_ptr);
return bytes_to_frames(runtime, pcm_data->hw_ptr);
}
static int sst_byt_pcm_open(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
dev_dbg(rtd->dev, "PCM: open\n");
mutex_lock(&pcm_data->mutex);
pcm_data->substream = substream;
snd_soc_set_runtime_hwparams(substream, &sst_byt_pcm_hardware);
pcm_data->stream = sst_byt_stream_new(byt, substream->stream + 1,
byt_notify_pointer, pcm_data);
if (pcm_data->stream == NULL) {
dev_err(rtd->dev, "failed to create stream\n");
mutex_unlock(&pcm_data->mutex);
return -EINVAL;
}
mutex_unlock(&pcm_data->mutex);
return 0;
}
static int sst_byt_pcm_close(struct snd_soc_component *component,
struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct sst_byt_priv_data *pdata = snd_soc_component_get_drvdata(component);
struct sst_byt_pcm_data *pcm_data = &pdata->pcm[substream->stream];
struct sst_byt *byt = pdata->byt;
int ret;
dev_dbg(rtd->dev, "PCM: close\n");
cancel_work_sync(&pcm_data->work);
mutex_lock(&pcm_data->mutex);
ret = sst_byt_stream_free(byt, pcm_data->stream);
if (ret < 0) {
dev_dbg(rtd->dev, "Free stream fail\n");
goto out;
}
pcm_data->stream = NULL;
out:
mutex_unlock(&pcm_data->mutex);
return ret;
}
static int sst_byt_pcm_mmap(struct snd_soc_component *component,
struct snd_pcm_substream *substream,
struct vm_area_struct *vma)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
dev_dbg(rtd->dev, "PCM: mmap\n");
return snd_pcm_lib_default_mmap(substream, vma);
}
static int sst_byt_pcm_new(struct snd_soc_component *component,
struct snd_soc_pcm_runtime *rtd)
{
struct snd_pcm *pcm = rtd->pcm;
size_t size;
struct sst_pdata *pdata = dev_get_platdata(component->dev);
if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
size = sst_byt_pcm_hardware.buffer_bytes_max;
snd_pcm_set_managed_buffer_all(pcm, SNDRV_DMA_TYPE_DEV,
pdata->dma_dev, size, size);
}
return 0;
}
static struct snd_soc_dai_driver byt_dais[] = {
{
.name = "Baytrail PCM",
.playback = {
.stream_name = "System Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S24_3LE |
SNDRV_PCM_FMTBIT_S16_LE,
},
.capture = {
.stream_name = "Analog Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_48000,
.formats = SNDRV_PCM_FMTBIT_S16_LE,
},
},
};
static int sst_byt_pcm_probe(struct snd_soc_component *component)
{
struct sst_pdata *plat_data = dev_get_platdata(component->dev);
struct sst_byt_priv_data *priv_data;
int i;
if (!plat_data)
return -ENODEV;
priv_data = devm_kzalloc(component->dev, sizeof(*priv_data),
GFP_KERNEL);
if (!priv_data)
return -ENOMEM;
priv_data->byt = plat_data->dsp;
snd_soc_component_set_drvdata(component, priv_data);
for (i = 0; i < BYT_PCM_COUNT; i++) {
mutex_init(&priv_data->pcm[i].mutex);
INIT_WORK(&priv_data->pcm[i].work, sst_byt_pcm_work);
}
return 0;
}
static const struct snd_soc_component_driver byt_dai_component = {
.name = DRV_NAME,
.probe = sst_byt_pcm_probe,
.open = sst_byt_pcm_open,
.close = sst_byt_pcm_close,
.hw_params = sst_byt_pcm_hw_params,
.trigger = sst_byt_pcm_trigger,
.pointer = sst_byt_pcm_pointer,
.mmap = sst_byt_pcm_mmap,
.pcm_construct = sst_byt_pcm_new,
};
#ifdef CONFIG_PM
static int sst_byt_pcm_dev_suspend_late(struct device *dev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(dev);
struct sst_byt_priv_data *priv_data = dev_get_drvdata(dev);
int ret;
dev_dbg(dev, "suspending late\n");
ret = sst_byt_dsp_suspend_late(dev, sst_pdata);
if (ret < 0) {
dev_err(dev, "failed to suspend %d\n", ret);
return ret;
}
priv_data->restore_stream = true;
return ret;
}
static int sst_byt_pcm_dev_resume_early(struct device *dev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(dev);
int ret;
dev_dbg(dev, "resume early\n");
/* load fw and boot DSP */
ret = sst_byt_dsp_boot(dev, sst_pdata);
if (ret)
return ret;
/* wait for FW to finish booting */
return sst_byt_dsp_wait_for_ready(dev, sst_pdata);
}
static const struct dev_pm_ops sst_byt_pm_ops = {
.suspend_late = sst_byt_pcm_dev_suspend_late,
.resume_early = sst_byt_pcm_dev_resume_early,
};
#define SST_BYT_PM_OPS (&sst_byt_pm_ops)
#else
#define SST_BYT_PM_OPS NULL
#endif
static int sst_byt_pcm_dev_probe(struct platform_device *pdev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
int ret;
ret = sst_byt_dsp_init(&pdev->dev, sst_pdata);
if (ret < 0)
return -ENODEV;
ret = devm_snd_soc_register_component(&pdev->dev, &byt_dai_component,
byt_dais, ARRAY_SIZE(byt_dais));
if (ret < 0)
goto err_plat;
return 0;
err_plat:
sst_byt_dsp_free(&pdev->dev, sst_pdata);
return ret;
}
static int sst_byt_pcm_dev_remove(struct platform_device *pdev)
{
struct sst_pdata *sst_pdata = dev_get_platdata(&pdev->dev);
sst_byt_dsp_free(&pdev->dev, sst_pdata);
return 0;
}
static struct platform_driver sst_byt_pcm_driver = {
.driver = {
.name = "baytrail-pcm-audio",
.pm = SST_BYT_PM_OPS,
},
.probe = sst_byt_pcm_dev_probe,
.remove = sst_byt_pcm_dev_remove,
};
module_platform_driver(sst_byt_pcm_driver);
MODULE_AUTHOR("Jarkko Nikula");
MODULE_DESCRIPTION("Baytrail PCM");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:baytrail-pcm-audio");