# Platform Support
obj-$(CONFIG_SND_SOC_INTEL_HASWELL) += haswell/
-snd-soc-sst-baytrail-pcm-objs := \
- sst-baytrail-ipc.o sst-baytrail-pcm.o sst-baytrail-dsp.o
-
-obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += snd-soc-sst-baytrail-pcm.o
+obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += baytrail/
# Machine support
obj-$(CONFIG_SND_SOC_INTEL_SST) += boards/
--- /dev/null
+snd-soc-sst-baytrail-pcm-objs := \
+ sst-baytrail-ipc.o sst-baytrail-pcm.o sst-baytrail-dsp.o
+
+obj-$(CONFIG_SND_SOC_INTEL_BAYTRAIL) += snd-soc-sst-baytrail-pcm.o
--- /dev/null
+/*
+ * Intel Baytrail SST DSP driver
+ * Copyright (c) 2014, Intel Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ */
+
+#include <linux/delay.h>
+#include <linux/fs.h>
+#include <linux/slab.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/firmware.h>
+
+#include "../common/sst-dsp.h"
+#include "../common/sst-dsp-priv.h"
+#include "sst-baytrail-ipc.h"
+
+#define SST_BYT_FW_SIGNATURE_SIZE 4
+#define SST_BYT_FW_SIGN "$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,
+};
--- /dev/null
+/*
+ * 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"
+
+/* 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;
+
+/* driver internal IPC message structure */
+struct ipc_message {
+ struct list_head list;
+ u64 header;
+
+ /* direction wrt host CPU */
+ char tx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
+ size_t tx_size;
+ char rx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
+ size_t rx_size;
+
+ wait_queue_head_t waitq;
+ bool complete;
+ bool wait;
+ int errno;
+};
+
+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 list_head tx_list;
+ struct list_head rx_list;
+ struct list_head empty_list;
+ wait_queue_head_t wait_txq;
+ struct task_struct *tx_thread;
+ struct kthread_worker kworker;
+ struct kthread_work kwork;
+ struct ipc_message *msg;
+};
+
+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_ipc_shim_dbg(struct sst_byt *byt, const char *text)
+{
+ struct sst_dsp *sst = byt->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(byt->dev,
+ "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
+ text, ipcx, isr, ipcd, imrx);
+}
+
+/* locks held by caller */
+static struct ipc_message *sst_byt_msg_get_empty(struct sst_byt *byt)
+{
+ struct ipc_message *msg = NULL;
+
+ if (!list_empty(&byt->empty_list)) {
+ msg = list_first_entry(&byt->empty_list,
+ struct ipc_message, list);
+ list_del(&msg->list);
+ }
+
+ return msg;
+}
+
+static void sst_byt_ipc_tx_msgs(struct kthread_work *work)
+{
+ struct sst_byt *byt =
+ container_of(work, struct sst_byt, kwork);
+ struct ipc_message *msg;
+ u64 ipcx;
+ unsigned long flags;
+
+ spin_lock_irqsave(&byt->dsp->spinlock, flags);
+ if (list_empty(&byt->tx_list)) {
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+ return;
+ }
+
+ /* if the DSP is busy we will TX messages after IRQ */
+ ipcx = sst_dsp_shim_read64_unlocked(byt->dsp, SST_IPCX);
+ if (ipcx & SST_BYT_IPCX_BUSY) {
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+ return;
+ }
+
+ msg = list_first_entry(&byt->tx_list, struct ipc_message, list);
+
+ list_move(&msg->list, &byt->rx_list);
+
+ /* send the message */
+ if (msg->header & IPC_HEADER_LARGE(true))
+ sst_dsp_outbox_write(byt->dsp, msg->tx_data, msg->tx_size);
+ sst_dsp_shim_write64_unlocked(byt->dsp, SST_IPCX, msg->header);
+
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+}
+
+static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt,
+ struct ipc_message *msg)
+{
+ msg->complete = true;
+
+ if (!msg->wait)
+ list_add_tail(&msg->list, &byt->empty_list);
+ else
+ wake_up(&msg->waitq);
+}
+
+static void sst_byt_drop_all(struct sst_byt *byt)
+{
+ struct ipc_message *msg, *tmp;
+ unsigned long flags;
+
+ /* drop all TX and Rx messages before we stall + reset DSP */
+ spin_lock_irqsave(&byt->dsp->spinlock, flags);
+ list_for_each_entry_safe(msg, tmp, &byt->tx_list, list) {
+ list_move(&msg->list, &byt->empty_list);
+ }
+
+ list_for_each_entry_safe(msg, tmp, &byt->rx_list, list) {
+ list_move(&msg->list, &byt->empty_list);
+ }
+
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+}
+
+static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg,
+ void *rx_data)
+{
+ unsigned long flags;
+ int ret;
+
+ /* wait for DSP completion */
+ ret = wait_event_timeout(msg->waitq, msg->complete,
+ msecs_to_jiffies(IPC_TIMEOUT_MSECS));
+
+ spin_lock_irqsave(&byt->dsp->spinlock, flags);
+ if (ret == 0) {
+ list_del(&msg->list);
+ sst_byt_ipc_shim_dbg(byt, "message timeout");
+
+ ret = -ETIMEDOUT;
+ } else {
+
+ /* copy the data returned from DSP */
+ if (msg->rx_size)
+ memcpy(rx_data, msg->rx_data, msg->rx_size);
+ ret = msg->errno;
+ }
+
+ list_add_tail(&msg->list, &byt->empty_list);
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+ return ret;
+}
+
+static int sst_byt_ipc_tx_message(struct sst_byt *byt, u64 header,
+ void *tx_data, size_t tx_bytes,
+ void *rx_data, size_t rx_bytes, int wait)
+{
+ unsigned long flags;
+ struct ipc_message *msg;
+
+ spin_lock_irqsave(&byt->dsp->spinlock, flags);
+
+ msg = sst_byt_msg_get_empty(byt);
+ if (msg == NULL) {
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+ return -EBUSY;
+ }
+
+ msg->header = header;
+ msg->tx_size = tx_bytes;
+ msg->rx_size = rx_bytes;
+ msg->wait = wait;
+ msg->errno = 0;
+ msg->complete = false;
+
+ if (tx_bytes) {
+ /* msg content = lower 32-bit of the header + data */
+ *(u32 *)msg->tx_data = (u32)(header & (u32)-1);
+ memcpy(msg->tx_data + sizeof(u32), tx_data, tx_bytes);
+ msg->tx_size += sizeof(u32);
+ }
+
+ list_add_tail(&msg->list, &byt->tx_list);
+ spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
+
+ queue_kthread_work(&byt->kworker, &byt->kwork);
+
+ if (wait)
+ return sst_byt_tx_wait_done(byt, msg, rx_data);
+ else
+ return 0;
+}
+
+static inline int sst_byt_ipc_tx_msg_wait(struct sst_byt *byt, u64 header,
+ void *tx_data, size_t tx_bytes,
+ void *rx_data, size_t rx_bytes)
+{
+ return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
+ rx_data, rx_bytes, 1);
+}
+
+static inline int sst_byt_ipc_tx_msg_nowait(struct sst_byt *byt, u64 header,
+ void *tx_data, size_t tx_bytes)
+{
+ return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
+ NULL, 0, 0);
+}
+
+static struct ipc_message *sst_byt_reply_find_msg(struct sst_byt *byt,
+ u64 header)
+{
+ struct ipc_message *msg = NULL, *_msg;
+ 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;
+
+ if (list_empty(&byt->rx_list)) {
+ dev_err(byt->dev,
+ "ipc: rx list is empty but received 0x%llx\n", header);
+ goto out;
+ }
+
+ list_for_each_entry(_msg, &byt->rx_list, list) {
+ if ((_msg->header & mask) == header) {
+ msg = _msg;
+ break;
+ }
+ }
+
+out:
+ return msg;
+}
+
+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_byt_reply_find_msg(byt, 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_byt_tx_msg_reply_complete(byt, 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);
+ 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(&byt->kworker, &byt->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_byt_ipc_tx_msg_wait(byt, 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_byt_ipc_tx_msg_wait(byt, 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_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0);
+ else
+ return sst_byt_ipc_tx_msg_nowait(byt, 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_byt_ipc_tx_msg_nowait(byt, 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);
+}
+
+static int msg_empty_list_init(struct sst_byt *byt)
+{
+ struct ipc_message *msg;
+ int i;
+
+ byt->msg = kzalloc(sizeof(*msg) * IPC_EMPTY_LIST_SIZE, GFP_KERNEL);
+ if (byt->msg == NULL)
+ return -ENOMEM;
+
+ for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
+ init_waitqueue_head(&byt->msg[i].waitq);
+ list_add(&byt->msg[i].list, &byt->empty_list);
+ }
+
+ return 0;
+}
+
+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_byt_drop_all(byt);
+ 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);
+
+int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
+{
+ struct sst_byt *byt;
+ 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;
+ INIT_LIST_HEAD(&byt->stream_list);
+ INIT_LIST_HEAD(&byt->tx_list);
+ INIT_LIST_HEAD(&byt->rx_list);
+ INIT_LIST_HEAD(&byt->empty_list);
+ init_waitqueue_head(&byt->boot_wait);
+ init_waitqueue_head(&byt->wait_txq);
+
+ err = msg_empty_list_init(byt);
+ if (err < 0)
+ return -ENOMEM;
+
+ /* start the IPC message thread */
+ init_kthread_worker(&byt->kworker);
+ byt->tx_thread = kthread_run(kthread_worker_fn,
+ &byt->kworker, "%s",
+ dev_name(byt->dev));
+ if (IS_ERR(byt->tx_thread)) {
+ err = PTR_ERR(byt->tx_thread);
+ dev_err(byt->dev, "error failed to create message TX task\n");
+ goto err_free_msg;
+ }
+ init_kthread_work(&byt->kwork, sst_byt_ipc_tx_msgs);
+
+ 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_err;
+ }
+
+ /* 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_err:
+ kthread_stop(byt->tx_thread);
+err_free_msg:
+ kfree(byt->msg);
+
+ 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);
+ kthread_stop(byt->tx_thread);
+ kfree(byt->msg);
+}
+EXPORT_SYMBOL_GPL(sst_byt_dsp_free);
--- /dev/null
+/*
+ * 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.
+ */
+
+#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 (*get_write_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
--- /dev/null
+/*
+ * Intel Baytrail SST PCM 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/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 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_pcm_substream *substream,
+ struct snd_pcm_hw_params *params)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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;
+ }
+
+ snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
+
+ 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_hw_free(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+ dev_dbg(rtd->dev, "PCM: hw_free\n");
+ snd_pcm_lib_free_pages(substream);
+
+ return 0;
+}
+
+static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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_pcm_substream *substream, int cmd)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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 == true)
+ 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;
+ 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 = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_pcm_runtime *runtime = substream->runtime;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct sst_byt_priv_data *pdata =
+ snd_soc_platform_get_drvdata(rtd->platform);
+ 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_pcm_substream *substream,
+ struct vm_area_struct *vma)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+
+ dev_dbg(rtd->dev, "PCM: mmap\n");
+ return snd_pcm_lib_default_mmap(substream, vma);
+}
+
+static struct snd_pcm_ops sst_byt_pcm_ops = {
+ .open = sst_byt_pcm_open,
+ .close = sst_byt_pcm_close,
+ .ioctl = snd_pcm_lib_ioctl,
+ .hw_params = sst_byt_pcm_hw_params,
+ .hw_free = sst_byt_pcm_hw_free,
+ .trigger = sst_byt_pcm_trigger,
+ .pointer = sst_byt_pcm_pointer,
+ .mmap = sst_byt_pcm_mmap,
+};
+
+static int sst_byt_pcm_new(struct snd_soc_pcm_runtime *rtd)
+{
+ struct snd_pcm *pcm = rtd->pcm;
+ size_t size;
+ struct snd_soc_platform *platform = rtd->platform;
+ struct sst_pdata *pdata = dev_get_platdata(platform->dev);
+ int ret = 0;
+
+ if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
+ pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
+ size = sst_byt_pcm_hardware.buffer_bytes_max;
+ ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
+ SNDRV_DMA_TYPE_DEV,
+ pdata->dma_dev,
+ size, size);
+ if (ret) {
+ dev_err(rtd->dev, "dma buffer allocation failed %d\n",
+ ret);
+ return ret;
+ }
+ }
+
+ return ret;
+}
+
+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_platform *platform)
+{
+ struct sst_pdata *plat_data = dev_get_platdata(platform->dev);
+ struct sst_byt_priv_data *priv_data;
+ int i;
+
+ if (!plat_data)
+ return -ENODEV;
+
+ priv_data = devm_kzalloc(platform->dev, sizeof(*priv_data),
+ GFP_KERNEL);
+ priv_data->byt = plat_data->dsp;
+ snd_soc_platform_set_drvdata(platform, 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 int sst_byt_pcm_remove(struct snd_soc_platform *platform)
+{
+ return 0;
+}
+
+static struct snd_soc_platform_driver byt_soc_platform = {
+ .probe = sst_byt_pcm_probe,
+ .remove = sst_byt_pcm_remove,
+ .ops = &sst_byt_pcm_ops,
+ .pcm_new = sst_byt_pcm_new,
+};
+
+static const struct snd_soc_component_driver byt_dai_component = {
+ .name = "byt-dai",
+};
+
+#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 = snd_soc_register_platform(&pdev->dev, &byt_soc_platform);
+ if (ret < 0)
+ goto err_plat;
+
+ ret = snd_soc_register_component(&pdev->dev, &byt_dai_component,
+ byt_dais, ARRAY_SIZE(byt_dais));
+ if (ret < 0)
+ goto err_comp;
+
+ return 0;
+
+err_comp:
+ snd_soc_unregister_platform(&pdev->dev);
+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);
+
+ snd_soc_unregister_platform(&pdev->dev);
+ snd_soc_unregister_component(&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");
+++ /dev/null
-/*
- * Intel Baytrail SST DSP driver
- * 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/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 "sst-dsp.h"
-#include "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,
-};
+++ /dev/null
-/*
- * 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 "sst-dsp.h"
-#include "sst-dsp-priv.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;
-
-/* driver internal IPC message structure */
-struct ipc_message {
- struct list_head list;
- u64 header;
-
- /* direction wrt host CPU */
- char tx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
- size_t tx_size;
- char rx_data[SST_BYT_IPC_MAX_PAYLOAD_SIZE];
- size_t rx_size;
-
- wait_queue_head_t waitq;
- bool complete;
- bool wait;
- int errno;
-};
-
-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 list_head tx_list;
- struct list_head rx_list;
- struct list_head empty_list;
- wait_queue_head_t wait_txq;
- struct task_struct *tx_thread;
- struct kthread_worker kworker;
- struct kthread_work kwork;
- struct ipc_message *msg;
-};
-
-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_ipc_shim_dbg(struct sst_byt *byt, const char *text)
-{
- struct sst_dsp *sst = byt->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(byt->dev,
- "ipc: --%s-- ipcx 0x%llx isr 0x%llx ipcd 0x%llx imrx 0x%llx\n",
- text, ipcx, isr, ipcd, imrx);
-}
-
-/* locks held by caller */
-static struct ipc_message *sst_byt_msg_get_empty(struct sst_byt *byt)
-{
- struct ipc_message *msg = NULL;
-
- if (!list_empty(&byt->empty_list)) {
- msg = list_first_entry(&byt->empty_list,
- struct ipc_message, list);
- list_del(&msg->list);
- }
-
- return msg;
-}
-
-static void sst_byt_ipc_tx_msgs(struct kthread_work *work)
-{
- struct sst_byt *byt =
- container_of(work, struct sst_byt, kwork);
- struct ipc_message *msg;
- u64 ipcx;
- unsigned long flags;
-
- spin_lock_irqsave(&byt->dsp->spinlock, flags);
- if (list_empty(&byt->tx_list)) {
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
- return;
- }
-
- /* if the DSP is busy we will TX messages after IRQ */
- ipcx = sst_dsp_shim_read64_unlocked(byt->dsp, SST_IPCX);
- if (ipcx & SST_BYT_IPCX_BUSY) {
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
- return;
- }
-
- msg = list_first_entry(&byt->tx_list, struct ipc_message, list);
-
- list_move(&msg->list, &byt->rx_list);
-
- /* send the message */
- if (msg->header & IPC_HEADER_LARGE(true))
- sst_dsp_outbox_write(byt->dsp, msg->tx_data, msg->tx_size);
- sst_dsp_shim_write64_unlocked(byt->dsp, SST_IPCX, msg->header);
-
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
-}
-
-static inline void sst_byt_tx_msg_reply_complete(struct sst_byt *byt,
- struct ipc_message *msg)
-{
- msg->complete = true;
-
- if (!msg->wait)
- list_add_tail(&msg->list, &byt->empty_list);
- else
- wake_up(&msg->waitq);
-}
-
-static void sst_byt_drop_all(struct sst_byt *byt)
-{
- struct ipc_message *msg, *tmp;
- unsigned long flags;
-
- /* drop all TX and Rx messages before we stall + reset DSP */
- spin_lock_irqsave(&byt->dsp->spinlock, flags);
- list_for_each_entry_safe(msg, tmp, &byt->tx_list, list) {
- list_move(&msg->list, &byt->empty_list);
- }
-
- list_for_each_entry_safe(msg, tmp, &byt->rx_list, list) {
- list_move(&msg->list, &byt->empty_list);
- }
-
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
-}
-
-static int sst_byt_tx_wait_done(struct sst_byt *byt, struct ipc_message *msg,
- void *rx_data)
-{
- unsigned long flags;
- int ret;
-
- /* wait for DSP completion */
- ret = wait_event_timeout(msg->waitq, msg->complete,
- msecs_to_jiffies(IPC_TIMEOUT_MSECS));
-
- spin_lock_irqsave(&byt->dsp->spinlock, flags);
- if (ret == 0) {
- list_del(&msg->list);
- sst_byt_ipc_shim_dbg(byt, "message timeout");
-
- ret = -ETIMEDOUT;
- } else {
-
- /* copy the data returned from DSP */
- if (msg->rx_size)
- memcpy(rx_data, msg->rx_data, msg->rx_size);
- ret = msg->errno;
- }
-
- list_add_tail(&msg->list, &byt->empty_list);
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
- return ret;
-}
-
-static int sst_byt_ipc_tx_message(struct sst_byt *byt, u64 header,
- void *tx_data, size_t tx_bytes,
- void *rx_data, size_t rx_bytes, int wait)
-{
- unsigned long flags;
- struct ipc_message *msg;
-
- spin_lock_irqsave(&byt->dsp->spinlock, flags);
-
- msg = sst_byt_msg_get_empty(byt);
- if (msg == NULL) {
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
- return -EBUSY;
- }
-
- msg->header = header;
- msg->tx_size = tx_bytes;
- msg->rx_size = rx_bytes;
- msg->wait = wait;
- msg->errno = 0;
- msg->complete = false;
-
- if (tx_bytes) {
- /* msg content = lower 32-bit of the header + data */
- *(u32 *)msg->tx_data = (u32)(header & (u32)-1);
- memcpy(msg->tx_data + sizeof(u32), tx_data, tx_bytes);
- msg->tx_size += sizeof(u32);
- }
-
- list_add_tail(&msg->list, &byt->tx_list);
- spin_unlock_irqrestore(&byt->dsp->spinlock, flags);
-
- queue_kthread_work(&byt->kworker, &byt->kwork);
-
- if (wait)
- return sst_byt_tx_wait_done(byt, msg, rx_data);
- else
- return 0;
-}
-
-static inline int sst_byt_ipc_tx_msg_wait(struct sst_byt *byt, u64 header,
- void *tx_data, size_t tx_bytes,
- void *rx_data, size_t rx_bytes)
-{
- return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
- rx_data, rx_bytes, 1);
-}
-
-static inline int sst_byt_ipc_tx_msg_nowait(struct sst_byt *byt, u64 header,
- void *tx_data, size_t tx_bytes)
-{
- return sst_byt_ipc_tx_message(byt, header, tx_data, tx_bytes,
- NULL, 0, 0);
-}
-
-static struct ipc_message *sst_byt_reply_find_msg(struct sst_byt *byt,
- u64 header)
-{
- struct ipc_message *msg = NULL, *_msg;
- 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;
-
- if (list_empty(&byt->rx_list)) {
- dev_err(byt->dev,
- "ipc: rx list is empty but received 0x%llx\n", header);
- goto out;
- }
-
- list_for_each_entry(_msg, &byt->rx_list, list) {
- if ((_msg->header & mask) == header) {
- msg = _msg;
- break;
- }
- }
-
-out:
- return msg;
-}
-
-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_byt_reply_find_msg(byt, 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_byt_tx_msg_reply_complete(byt, 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);
- 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(&byt->kworker, &byt->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_byt_ipc_tx_msg_wait(byt, 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_byt_ipc_tx_msg_wait(byt, 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_byt_ipc_tx_msg_wait(byt, header, NULL, 0, NULL, 0);
- else
- return sst_byt_ipc_tx_msg_nowait(byt, 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_byt_ipc_tx_msg_nowait(byt, 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);
-}
-
-static int msg_empty_list_init(struct sst_byt *byt)
-{
- struct ipc_message *msg;
- int i;
-
- byt->msg = kzalloc(sizeof(*msg) * IPC_EMPTY_LIST_SIZE, GFP_KERNEL);
- if (byt->msg == NULL)
- return -ENOMEM;
-
- for (i = 0; i < IPC_EMPTY_LIST_SIZE; i++) {
- init_waitqueue_head(&byt->msg[i].waitq);
- list_add(&byt->msg[i].list, &byt->empty_list);
- }
-
- return 0;
-}
-
-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_byt_drop_all(byt);
- 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);
-
-int sst_byt_dsp_init(struct device *dev, struct sst_pdata *pdata)
-{
- struct sst_byt *byt;
- 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;
- INIT_LIST_HEAD(&byt->stream_list);
- INIT_LIST_HEAD(&byt->tx_list);
- INIT_LIST_HEAD(&byt->rx_list);
- INIT_LIST_HEAD(&byt->empty_list);
- init_waitqueue_head(&byt->boot_wait);
- init_waitqueue_head(&byt->wait_txq);
-
- err = msg_empty_list_init(byt);
- if (err < 0)
- return -ENOMEM;
-
- /* start the IPC message thread */
- init_kthread_worker(&byt->kworker);
- byt->tx_thread = kthread_run(kthread_worker_fn,
- &byt->kworker, "%s",
- dev_name(byt->dev));
- if (IS_ERR(byt->tx_thread)) {
- err = PTR_ERR(byt->tx_thread);
- dev_err(byt->dev, "error failed to create message TX task\n");
- goto err_free_msg;
- }
- init_kthread_work(&byt->kwork, sst_byt_ipc_tx_msgs);
-
- 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_err;
- }
-
- /* 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_err:
- kthread_stop(byt->tx_thread);
-err_free_msg:
- kfree(byt->msg);
-
- 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);
- kthread_stop(byt->tx_thread);
- kfree(byt->msg);
-}
-EXPORT_SYMBOL_GPL(sst_byt_dsp_free);
+++ /dev/null
-/*
- * 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.
- */
-
-#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 (*get_write_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
+++ /dev/null
-/*
- * Intel Baytrail SST PCM 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/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 "sst-dsp-priv.h"
-#include "sst-dsp.h"
-
-#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_pcm_substream *substream,
- struct snd_pcm_hw_params *params)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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;
- }
-
- snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
-
- 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_hw_free(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
-
- dev_dbg(rtd->dev, "PCM: hw_free\n");
- snd_pcm_lib_free_pages(substream);
-
- return 0;
-}
-
-static int sst_byt_pcm_restore_stream_context(struct snd_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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_pcm_substream *substream, int cmd)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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 == true)
- 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;
- 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 = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_pcm_runtime *runtime = substream->runtime;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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_pcm_substream *substream)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct sst_byt_priv_data *pdata =
- snd_soc_platform_get_drvdata(rtd->platform);
- 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_pcm_substream *substream,
- struct vm_area_struct *vma)
-{
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
-
- dev_dbg(rtd->dev, "PCM: mmap\n");
- return snd_pcm_lib_default_mmap(substream, vma);
-}
-
-static struct snd_pcm_ops sst_byt_pcm_ops = {
- .open = sst_byt_pcm_open,
- .close = sst_byt_pcm_close,
- .ioctl = snd_pcm_lib_ioctl,
- .hw_params = sst_byt_pcm_hw_params,
- .hw_free = sst_byt_pcm_hw_free,
- .trigger = sst_byt_pcm_trigger,
- .pointer = sst_byt_pcm_pointer,
- .mmap = sst_byt_pcm_mmap,
-};
-
-static int sst_byt_pcm_new(struct snd_soc_pcm_runtime *rtd)
-{
- struct snd_pcm *pcm = rtd->pcm;
- size_t size;
- struct snd_soc_platform *platform = rtd->platform;
- struct sst_pdata *pdata = dev_get_platdata(platform->dev);
- int ret = 0;
-
- if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream ||
- pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
- size = sst_byt_pcm_hardware.buffer_bytes_max;
- ret = snd_pcm_lib_preallocate_pages_for_all(pcm,
- SNDRV_DMA_TYPE_DEV,
- pdata->dma_dev,
- size, size);
- if (ret) {
- dev_err(rtd->dev, "dma buffer allocation failed %d\n",
- ret);
- return ret;
- }
- }
-
- return ret;
-}
-
-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_platform *platform)
-{
- struct sst_pdata *plat_data = dev_get_platdata(platform->dev);
- struct sst_byt_priv_data *priv_data;
- int i;
-
- if (!plat_data)
- return -ENODEV;
-
- priv_data = devm_kzalloc(platform->dev, sizeof(*priv_data),
- GFP_KERNEL);
- priv_data->byt = plat_data->dsp;
- snd_soc_platform_set_drvdata(platform, 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 int sst_byt_pcm_remove(struct snd_soc_platform *platform)
-{
- return 0;
-}
-
-static struct snd_soc_platform_driver byt_soc_platform = {
- .probe = sst_byt_pcm_probe,
- .remove = sst_byt_pcm_remove,
- .ops = &sst_byt_pcm_ops,
- .pcm_new = sst_byt_pcm_new,
-};
-
-static const struct snd_soc_component_driver byt_dai_component = {
- .name = "byt-dai",
-};
-
-#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 = snd_soc_register_platform(&pdev->dev, &byt_soc_platform);
- if (ret < 0)
- goto err_plat;
-
- ret = snd_soc_register_component(&pdev->dev, &byt_dai_component,
- byt_dais, ARRAY_SIZE(byt_dais));
- if (ret < 0)
- goto err_comp;
-
- return 0;
-
-err_comp:
- snd_soc_unregister_platform(&pdev->dev);
-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);
-
- snd_soc_unregister_platform(&pdev->dev);
- snd_soc_unregister_component(&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");
projects / openwrt / staging / blogic.git / commitdiff