530 lines
13 KiB
C
530 lines
13 KiB
C
// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// This file is provided under a dual BSD/GPLv2 license. When using or
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// redistributing this file, you may do so under either license.
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//
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// Copyright(c) 2018 Intel Corporation. All rights reserved.
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//
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// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
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//
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#include <linux/firmware.h>
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#include <linux/module.h>
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#include <asm/unaligned.h>
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#include <sound/soc.h>
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#include <sound/sof.h>
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#include "sof-priv.h"
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#include "ops.h"
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/* SOF defaults if not provided by the platform in ms */
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#define TIMEOUT_DEFAULT_IPC_MS 500
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#define TIMEOUT_DEFAULT_BOOT_MS 2000
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/*
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* Generic object lookup APIs.
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*/
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struct snd_sof_pcm *snd_sof_find_spcm_name(struct snd_sof_dev *sdev,
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const char *name)
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{
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struct snd_sof_pcm *spcm;
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list_for_each_entry(spcm, &sdev->pcm_list, list) {
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/* match with PCM dai name */
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if (strcmp(spcm->pcm.dai_name, name) == 0)
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return spcm;
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/* match with playback caps name if set */
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if (*spcm->pcm.caps[0].name &&
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!strcmp(spcm->pcm.caps[0].name, name))
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return spcm;
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/* match with capture caps name if set */
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if (*spcm->pcm.caps[1].name &&
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!strcmp(spcm->pcm.caps[1].name, name))
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return spcm;
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}
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return NULL;
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}
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struct snd_sof_pcm *snd_sof_find_spcm_comp(struct snd_sof_dev *sdev,
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unsigned int comp_id,
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int *direction)
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{
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struct snd_sof_pcm *spcm;
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list_for_each_entry(spcm, &sdev->pcm_list, list) {
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if (spcm->stream[SNDRV_PCM_STREAM_PLAYBACK].comp_id == comp_id) {
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*direction = SNDRV_PCM_STREAM_PLAYBACK;
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return spcm;
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}
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if (spcm->stream[SNDRV_PCM_STREAM_CAPTURE].comp_id == comp_id) {
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*direction = SNDRV_PCM_STREAM_CAPTURE;
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return spcm;
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}
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}
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return NULL;
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}
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struct snd_sof_pcm *snd_sof_find_spcm_pcm_id(struct snd_sof_dev *sdev,
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unsigned int pcm_id)
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{
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struct snd_sof_pcm *spcm;
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list_for_each_entry(spcm, &sdev->pcm_list, list) {
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if (le32_to_cpu(spcm->pcm.pcm_id) == pcm_id)
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return spcm;
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}
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return NULL;
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}
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struct snd_sof_widget *snd_sof_find_swidget(struct snd_sof_dev *sdev,
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const char *name)
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{
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struct snd_sof_widget *swidget;
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list_for_each_entry(swidget, &sdev->widget_list, list) {
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if (strcmp(name, swidget->widget->name) == 0)
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return swidget;
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}
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return NULL;
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}
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/* find widget by stream name and direction */
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struct snd_sof_widget *snd_sof_find_swidget_sname(struct snd_sof_dev *sdev,
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const char *pcm_name, int dir)
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{
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struct snd_sof_widget *swidget;
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enum snd_soc_dapm_type type;
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if (dir == SNDRV_PCM_STREAM_PLAYBACK)
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type = snd_soc_dapm_aif_in;
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else
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type = snd_soc_dapm_aif_out;
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list_for_each_entry(swidget, &sdev->widget_list, list) {
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if (!strcmp(pcm_name, swidget->widget->sname) && swidget->id == type)
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return swidget;
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}
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return NULL;
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}
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struct snd_sof_dai *snd_sof_find_dai(struct snd_sof_dev *sdev,
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const char *name)
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{
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struct snd_sof_dai *dai;
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list_for_each_entry(dai, &sdev->dai_list, list) {
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if (dai->name && (strcmp(name, dai->name) == 0))
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return dai;
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}
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return NULL;
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}
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/*
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* FW Panic/fault handling.
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*/
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struct sof_panic_msg {
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u32 id;
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const char *msg;
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};
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/* standard FW panic types */
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static const struct sof_panic_msg panic_msg[] = {
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{SOF_IPC_PANIC_MEM, "out of memory"},
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{SOF_IPC_PANIC_WORK, "work subsystem init failed"},
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{SOF_IPC_PANIC_IPC, "IPC subsystem init failed"},
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{SOF_IPC_PANIC_ARCH, "arch init failed"},
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{SOF_IPC_PANIC_PLATFORM, "platform init failed"},
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{SOF_IPC_PANIC_TASK, "scheduler init failed"},
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{SOF_IPC_PANIC_EXCEPTION, "runtime exception"},
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{SOF_IPC_PANIC_DEADLOCK, "deadlock"},
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{SOF_IPC_PANIC_STACK, "stack overflow"},
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{SOF_IPC_PANIC_IDLE, "can't enter idle"},
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{SOF_IPC_PANIC_WFI, "invalid wait state"},
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{SOF_IPC_PANIC_ASSERT, "assertion failed"},
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};
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/*
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* helper to be called from .dbg_dump callbacks. No error code is
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* provided, it's left as an exercise for the caller of .dbg_dump
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* (typically IPC or loader)
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*/
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void snd_sof_get_status(struct snd_sof_dev *sdev, u32 panic_code,
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u32 tracep_code, void *oops,
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struct sof_ipc_panic_info *panic_info,
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void *stack, size_t stack_words)
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{
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u32 code;
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int i;
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/* is firmware dead ? */
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if ((panic_code & SOF_IPC_PANIC_MAGIC_MASK) != SOF_IPC_PANIC_MAGIC) {
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dev_err(sdev->dev, "error: unexpected fault 0x%8.8x trace 0x%8.8x\n",
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panic_code, tracep_code);
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return; /* no fault ? */
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}
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code = panic_code & (SOF_IPC_PANIC_MAGIC_MASK | SOF_IPC_PANIC_CODE_MASK);
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for (i = 0; i < ARRAY_SIZE(panic_msg); i++) {
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if (panic_msg[i].id == code) {
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dev_err(sdev->dev, "error: %s\n", panic_msg[i].msg);
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dev_err(sdev->dev, "error: trace point %8.8x\n",
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tracep_code);
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goto out;
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}
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}
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/* unknown error */
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dev_err(sdev->dev, "error: unknown reason %8.8x\n", panic_code);
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dev_err(sdev->dev, "error: trace point %8.8x\n", tracep_code);
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out:
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dev_err(sdev->dev, "error: panic at %s:%d\n",
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panic_info->filename, panic_info->linenum);
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sof_oops(sdev, oops);
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sof_stack(sdev, oops, stack, stack_words);
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}
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EXPORT_SYMBOL(snd_sof_get_status);
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/*
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* Generic buffer page table creation.
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* Take the each physical page address and drop the least significant unused
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* bits from each (based on PAGE_SIZE). Then pack valid page address bits
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* into compressed page table.
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*/
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int snd_sof_create_page_table(struct snd_sof_dev *sdev,
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struct snd_dma_buffer *dmab,
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unsigned char *page_table, size_t size)
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{
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int i, pages;
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pages = snd_sgbuf_aligned_pages(size);
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dev_dbg(sdev->dev, "generating page table for %p size 0x%zx pages %d\n",
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dmab->area, size, pages);
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for (i = 0; i < pages; i++) {
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/*
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* The number of valid address bits for each page is 20.
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* idx determines the byte position within page_table
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* where the current page's address is stored
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* in the compressed page_table.
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* This can be calculated by multiplying the page number by 2.5.
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*/
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u32 idx = (5 * i) >> 1;
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u32 pfn = snd_sgbuf_get_addr(dmab, i * PAGE_SIZE) >> PAGE_SHIFT;
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u8 *pg_table;
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dev_vdbg(sdev->dev, "pfn i %i idx %d pfn %x\n", i, idx, pfn);
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pg_table = (u8 *)(page_table + idx);
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/*
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* pagetable compression:
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* byte 0 byte 1 byte 2 byte 3 byte 4 byte 5
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* ___________pfn 0__________ __________pfn 1___________ _pfn 2...
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* .... .... .... .... .... .... .... .... .... .... ....
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* It is created by:
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* 1. set current location to 0, PFN index i to 0
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* 2. put pfn[i] at current location in Little Endian byte order
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* 3. calculate an intermediate value as
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* x = (pfn[i+1] << 4) | (pfn[i] & 0xf)
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* 4. put x at offset (current location + 2) in LE byte order
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* 5. increment current location by 5 bytes, increment i by 2
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* 6. continue to (2)
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*/
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if (i & 1)
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put_unaligned_le32((pg_table[0] & 0xf) | pfn << 4,
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pg_table);
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else
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put_unaligned_le32(pfn, pg_table);
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}
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return pages;
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}
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/*
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* SOF Driver enumeration.
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*/
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static int sof_machine_check(struct snd_sof_dev *sdev)
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{
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struct snd_sof_pdata *plat_data = sdev->pdata;
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#if IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)
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struct snd_soc_acpi_mach *machine;
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int ret;
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#endif
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if (plat_data->machine)
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return 0;
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#if !IS_ENABLED(CONFIG_SND_SOC_SOF_NOCODEC)
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dev_err(sdev->dev, "error: no matching ASoC machine driver found - aborting probe\n");
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return -ENODEV;
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#else
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/* fallback to nocodec mode */
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dev_warn(sdev->dev, "No ASoC machine driver found - using nocodec\n");
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machine = devm_kzalloc(sdev->dev, sizeof(*machine), GFP_KERNEL);
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if (!machine)
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return -ENOMEM;
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ret = sof_nocodec_setup(sdev->dev, plat_data, machine,
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plat_data->desc, plat_data->desc->ops);
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if (ret < 0)
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return ret;
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plat_data->machine = machine;
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return 0;
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#endif
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}
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static int sof_probe_continue(struct snd_sof_dev *sdev)
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{
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struct snd_sof_pdata *plat_data = sdev->pdata;
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const char *drv_name;
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const void *mach;
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int size;
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int ret;
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/* probe the DSP hardware */
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ret = snd_sof_probe(sdev);
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if (ret < 0) {
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dev_err(sdev->dev, "error: failed to probe DSP %d\n", ret);
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return ret;
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}
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/* check machine info */
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ret = sof_machine_check(sdev);
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if (ret < 0) {
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dev_err(sdev->dev, "error: failed to get machine info %d\n",
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ret);
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goto dbg_err;
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}
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/* set up platform component driver */
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snd_sof_new_platform_drv(sdev);
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/* register any debug/trace capabilities */
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ret = snd_sof_dbg_init(sdev);
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if (ret < 0) {
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/*
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* debugfs issues are suppressed in snd_sof_dbg_init() since
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* we cannot rely on debugfs
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* here we trap errors due to memory allocation only.
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*/
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dev_err(sdev->dev, "error: failed to init DSP trace/debug %d\n",
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ret);
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goto dbg_err;
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}
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/* init the IPC */
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sdev->ipc = snd_sof_ipc_init(sdev);
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if (!sdev->ipc) {
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dev_err(sdev->dev, "error: failed to init DSP IPC %d\n", ret);
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goto ipc_err;
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}
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/* load the firmware */
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ret = snd_sof_load_firmware(sdev);
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if (ret < 0) {
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dev_err(sdev->dev, "error: failed to load DSP firmware %d\n",
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ret);
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goto fw_load_err;
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}
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/* boot the firmware */
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ret = snd_sof_run_firmware(sdev);
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if (ret < 0) {
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dev_err(sdev->dev, "error: failed to boot DSP firmware %d\n",
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ret);
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goto fw_run_err;
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}
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/* init DMA trace */
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ret = snd_sof_init_trace(sdev);
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if (ret < 0) {
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/* non fatal */
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dev_warn(sdev->dev,
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"warning: failed to initialize trace %d\n", ret);
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}
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/* hereafter all FW boot flows are for PM reasons */
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sdev->first_boot = false;
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/* now register audio DSP platform driver and dai */
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ret = devm_snd_soc_register_component(sdev->dev, &sdev->plat_drv,
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sof_ops(sdev)->drv,
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sof_ops(sdev)->num_drv);
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if (ret < 0) {
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dev_err(sdev->dev,
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"error: failed to register DSP DAI driver %d\n", ret);
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goto fw_run_err;
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}
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drv_name = plat_data->machine->drv_name;
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mach = (const void *)plat_data->machine;
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size = sizeof(*plat_data->machine);
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/* register machine driver, pass machine info as pdata */
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plat_data->pdev_mach =
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platform_device_register_data(sdev->dev, drv_name,
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PLATFORM_DEVID_NONE, mach, size);
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if (IS_ERR(plat_data->pdev_mach)) {
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ret = PTR_ERR(plat_data->pdev_mach);
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goto fw_run_err;
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}
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dev_dbg(sdev->dev, "created machine %s\n",
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dev_name(&plat_data->pdev_mach->dev));
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if (plat_data->sof_probe_complete)
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plat_data->sof_probe_complete(sdev->dev);
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return 0;
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#if !IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)
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fw_run_err:
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snd_sof_fw_unload(sdev);
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fw_load_err:
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snd_sof_ipc_free(sdev);
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ipc_err:
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snd_sof_free_debug(sdev);
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dbg_err:
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snd_sof_remove(sdev);
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#else
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/*
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* when the probe_continue is handled in a work queue, the
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* probe does not fail so we don't release resources here.
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* They will be released with an explicit call to
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* snd_sof_device_remove() when the PCI/ACPI device is removed
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*/
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fw_run_err:
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fw_load_err:
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ipc_err:
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dbg_err:
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#endif
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return ret;
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}
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static void sof_probe_work(struct work_struct *work)
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{
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struct snd_sof_dev *sdev =
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container_of(work, struct snd_sof_dev, probe_work);
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int ret;
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ret = sof_probe_continue(sdev);
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if (ret < 0) {
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/* errors cannot be propagated, log */
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dev_err(sdev->dev, "error: %s failed err: %d\n", __func__, ret);
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}
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}
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int snd_sof_device_probe(struct device *dev, struct snd_sof_pdata *plat_data)
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{
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struct snd_sof_dev *sdev;
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sdev = devm_kzalloc(dev, sizeof(*sdev), GFP_KERNEL);
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if (!sdev)
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return -ENOMEM;
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/* initialize sof device */
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sdev->dev = dev;
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sdev->pdata = plat_data;
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sdev->first_boot = true;
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dev_set_drvdata(dev, sdev);
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/* check all mandatory ops */
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if (!sof_ops(sdev) || !sof_ops(sdev)->probe || !sof_ops(sdev)->run ||
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!sof_ops(sdev)->block_read || !sof_ops(sdev)->block_write ||
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!sof_ops(sdev)->send_msg || !sof_ops(sdev)->load_firmware ||
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!sof_ops(sdev)->ipc_msg_data || !sof_ops(sdev)->ipc_pcm_params)
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return -EINVAL;
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INIT_LIST_HEAD(&sdev->pcm_list);
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INIT_LIST_HEAD(&sdev->kcontrol_list);
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INIT_LIST_HEAD(&sdev->widget_list);
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INIT_LIST_HEAD(&sdev->dai_list);
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INIT_LIST_HEAD(&sdev->route_list);
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spin_lock_init(&sdev->ipc_lock);
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spin_lock_init(&sdev->hw_lock);
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if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
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INIT_WORK(&sdev->probe_work, sof_probe_work);
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/* set default timeouts if none provided */
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if (plat_data->desc->ipc_timeout == 0)
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sdev->ipc_timeout = TIMEOUT_DEFAULT_IPC_MS;
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else
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sdev->ipc_timeout = plat_data->desc->ipc_timeout;
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if (plat_data->desc->boot_timeout == 0)
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sdev->boot_timeout = TIMEOUT_DEFAULT_BOOT_MS;
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else
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sdev->boot_timeout = plat_data->desc->boot_timeout;
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if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE)) {
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schedule_work(&sdev->probe_work);
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return 0;
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}
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return sof_probe_continue(sdev);
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}
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EXPORT_SYMBOL(snd_sof_device_probe);
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int snd_sof_device_remove(struct device *dev)
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{
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struct snd_sof_dev *sdev = dev_get_drvdata(dev);
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struct snd_sof_pdata *pdata = sdev->pdata;
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if (IS_ENABLED(CONFIG_SND_SOC_SOF_PROBE_WORK_QUEUE))
|
|
cancel_work_sync(&sdev->probe_work);
|
|
|
|
snd_sof_fw_unload(sdev);
|
|
snd_sof_ipc_free(sdev);
|
|
snd_sof_free_debug(sdev);
|
|
snd_sof_free_trace(sdev);
|
|
|
|
/*
|
|
* Unregister machine driver. This will unbind the snd_card which
|
|
* will remove the component driver and unload the topology
|
|
* before freeing the snd_card.
|
|
*/
|
|
if (!IS_ERR_OR_NULL(pdata->pdev_mach))
|
|
platform_device_unregister(pdata->pdev_mach);
|
|
|
|
/*
|
|
* Unregistering the machine driver results in unloading the topology.
|
|
* Some widgets, ex: scheduler, attempt to power down the core they are
|
|
* scheduled on, when they are unloaded. Therefore, the DSP must be
|
|
* removed only after the topology has been unloaded.
|
|
*/
|
|
snd_sof_remove(sdev);
|
|
|
|
/* release firmware */
|
|
release_firmware(pdata->fw);
|
|
pdata->fw = NULL;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(snd_sof_device_remove);
|
|
|
|
MODULE_AUTHOR("Liam Girdwood");
|
|
MODULE_DESCRIPTION("Sound Open Firmware (SOF) Core");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_ALIAS("platform:sof-audio");
|