421 lines
10 KiB
C
421 lines
10 KiB
C
// SPDX-License-Identifier: (GPL-2.0-only 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) 2018-2021 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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/*
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* Hardware interface for audio DSP on Atom devices
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*/
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#include <linux/module.h>
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#include <sound/sof.h>
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#include <sound/sof/xtensa.h>
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#include <sound/soc-acpi.h>
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#include <sound/soc-acpi-intel-match.h>
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#include <sound/intel-dsp-config.h>
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#include "../ops.h"
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#include "shim.h"
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#include "atom.h"
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#include "../sof-acpi-dev.h"
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#include "../sof-audio.h"
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#include "../../intel/common/soc-intel-quirks.h"
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static void atom_host_done(struct snd_sof_dev *sdev);
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static void atom_dsp_done(struct snd_sof_dev *sdev);
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/*
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* Debug
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*/
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static void atom_get_registers(struct snd_sof_dev *sdev,
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struct sof_ipc_dsp_oops_xtensa *xoops,
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struct sof_ipc_panic_info *panic_info,
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u32 *stack, size_t stack_words)
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{
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u32 offset = sdev->dsp_oops_offset;
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/* first read regsisters */
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sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
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/* note: variable AR register array is not read */
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/* then get panic info */
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if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
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dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
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xoops->arch_hdr.totalsize);
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return;
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}
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offset += xoops->arch_hdr.totalsize;
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sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
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/* then get the stack */
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offset += sizeof(*panic_info);
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sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
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}
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void atom_dump(struct snd_sof_dev *sdev, u32 flags)
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{
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struct sof_ipc_dsp_oops_xtensa xoops;
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struct sof_ipc_panic_info panic_info;
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u32 stack[STACK_DUMP_SIZE];
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u64 status, panic, imrd, imrx;
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/* now try generic SOF status messages */
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status = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
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panic = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
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atom_get_registers(sdev, &xoops, &panic_info, stack,
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STACK_DUMP_SIZE);
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sof_print_oops_and_stack(sdev, KERN_ERR, status, panic, &xoops,
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&panic_info, stack, STACK_DUMP_SIZE);
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/* provide some context for firmware debug */
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imrx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRX);
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imrd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRD);
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dev_err(sdev->dev,
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"error: ipc host -> DSP: pending %s complete %s raw 0x%llx\n",
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(panic & SHIM_IPCX_BUSY) ? "yes" : "no",
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(panic & SHIM_IPCX_DONE) ? "yes" : "no", panic);
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dev_err(sdev->dev,
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"error: mask host: pending %s complete %s raw 0x%llx\n",
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(imrx & SHIM_IMRX_BUSY) ? "yes" : "no",
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(imrx & SHIM_IMRX_DONE) ? "yes" : "no", imrx);
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dev_err(sdev->dev,
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"error: ipc DSP -> host: pending %s complete %s raw 0x%llx\n",
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(status & SHIM_IPCD_BUSY) ? "yes" : "no",
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(status & SHIM_IPCD_DONE) ? "yes" : "no", status);
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dev_err(sdev->dev,
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"error: mask DSP: pending %s complete %s raw 0x%llx\n",
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(imrd & SHIM_IMRD_BUSY) ? "yes" : "no",
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(imrd & SHIM_IMRD_DONE) ? "yes" : "no", imrd);
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}
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EXPORT_SYMBOL_NS(atom_dump, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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/*
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* IPC Doorbell IRQ handler and thread.
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*/
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irqreturn_t atom_irq_handler(int irq, void *context)
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{
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struct snd_sof_dev *sdev = context;
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u64 ipcx, ipcd;
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int ret = IRQ_NONE;
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ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
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ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
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if (ipcx & SHIM_BYT_IPCX_DONE) {
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/* reply message from DSP, Mask Done interrupt first */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
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SHIM_IMRX,
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SHIM_IMRX_DONE,
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SHIM_IMRX_DONE);
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ret = IRQ_WAKE_THREAD;
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}
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if (ipcd & SHIM_BYT_IPCD_BUSY) {
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/* new message from DSP, Mask Busy interrupt first */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
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SHIM_IMRX,
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SHIM_IMRX_BUSY,
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SHIM_IMRX_BUSY);
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ret = IRQ_WAKE_THREAD;
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}
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return ret;
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}
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EXPORT_SYMBOL_NS(atom_irq_handler, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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irqreturn_t atom_irq_thread(int irq, void *context)
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{
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struct snd_sof_dev *sdev = context;
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u64 ipcx, ipcd;
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ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
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ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
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/* reply message from DSP */
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if (ipcx & SHIM_BYT_IPCX_DONE) {
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spin_lock_irq(&sdev->ipc_lock);
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/*
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* handle immediate reply from DSP core. If the msg is
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* found, set done bit in cmd_done which is called at the
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* end of message processing function, else set it here
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* because the done bit can't be set in cmd_done function
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* which is triggered by msg
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*/
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snd_sof_ipc_process_reply(sdev, ipcx);
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atom_dsp_done(sdev);
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spin_unlock_irq(&sdev->ipc_lock);
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}
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/* new message from DSP */
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if (ipcd & SHIM_BYT_IPCD_BUSY) {
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/* Handle messages from DSP Core */
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if ((ipcd & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
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snd_sof_dsp_panic(sdev, PANIC_OFFSET(ipcd) + MBOX_OFFSET,
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true);
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} else {
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snd_sof_ipc_msgs_rx(sdev);
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}
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atom_host_done(sdev);
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}
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return IRQ_HANDLED;
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}
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EXPORT_SYMBOL_NS(atom_irq_thread, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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int atom_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
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{
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/* unmask and prepare to receive Done interrupt */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
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SHIM_IMRX_DONE, 0);
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/* send the message */
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sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
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msg->msg_size);
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snd_sof_dsp_write64(sdev, DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
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return 0;
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}
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EXPORT_SYMBOL_NS(atom_send_msg, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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int atom_get_mailbox_offset(struct snd_sof_dev *sdev)
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{
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return MBOX_OFFSET;
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}
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EXPORT_SYMBOL_NS(atom_get_mailbox_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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int atom_get_window_offset(struct snd_sof_dev *sdev, u32 id)
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{
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return MBOX_OFFSET;
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}
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EXPORT_SYMBOL_NS(atom_get_window_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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static void atom_host_done(struct snd_sof_dev *sdev)
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{
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/* clear BUSY bit and set DONE bit - accept new messages */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCD,
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SHIM_BYT_IPCD_BUSY |
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SHIM_BYT_IPCD_DONE,
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SHIM_BYT_IPCD_DONE);
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/* unmask and prepare to receive next new message */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
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SHIM_IMRX_BUSY, 0);
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}
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static void atom_dsp_done(struct snd_sof_dev *sdev)
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{
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/* clear DONE bit - tell DSP we have completed */
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snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCX,
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SHIM_BYT_IPCX_DONE, 0);
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}
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/*
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* DSP control.
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*/
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int atom_run(struct snd_sof_dev *sdev)
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{
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int tries = 10;
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/* release stall and wait to unstall */
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snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
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SHIM_BYT_CSR_STALL, 0x0);
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while (tries--) {
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if (!(snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_CSR) &
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SHIM_BYT_CSR_PWAITMODE))
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break;
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msleep(100);
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}
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if (tries < 0)
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return -ENODEV;
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/* return init core mask */
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return 1;
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}
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EXPORT_SYMBOL_NS(atom_run, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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int atom_reset(struct snd_sof_dev *sdev)
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{
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/* put DSP into reset, set reset vector and stall */
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snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
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SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
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SHIM_BYT_CSR_STALL,
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SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
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SHIM_BYT_CSR_STALL);
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usleep_range(10, 15);
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/* take DSP out of reset and keep stalled for FW loading */
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snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
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SHIM_BYT_CSR_RST, 0);
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return 0;
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}
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EXPORT_SYMBOL_NS(atom_reset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
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const char *sof_tplg_filename,
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const char *ssp_str)
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{
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const char *tplg_filename = NULL;
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const char *split_ext;
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char *filename, *tmp;
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filename = kstrdup(sof_tplg_filename, GFP_KERNEL);
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if (!filename)
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return NULL;
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/* this assumes a .tplg extension */
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tmp = filename;
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split_ext = strsep(&tmp, ".");
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if (split_ext)
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tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
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"%s-%s.tplg",
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split_ext, ssp_str);
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kfree(filename);
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return tplg_filename;
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}
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struct snd_soc_acpi_mach *atom_machine_select(struct snd_sof_dev *sdev)
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{
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struct snd_sof_pdata *sof_pdata = sdev->pdata;
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const struct sof_dev_desc *desc = sof_pdata->desc;
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struct snd_soc_acpi_mach *mach;
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struct platform_device *pdev;
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const char *tplg_filename;
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mach = snd_soc_acpi_find_machine(desc->machines);
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if (!mach) {
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dev_warn(sdev->dev, "warning: No matching ASoC machine driver found\n");
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return NULL;
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}
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pdev = to_platform_device(sdev->dev);
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if (soc_intel_is_byt_cr(pdev)) {
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dev_dbg(sdev->dev,
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"BYT-CR detected, SSP0 used instead of SSP2\n");
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tplg_filename = fixup_tplg_name(sdev,
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mach->sof_tplg_filename,
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"ssp0");
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} else {
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tplg_filename = mach->sof_tplg_filename;
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}
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if (!tplg_filename) {
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dev_dbg(sdev->dev,
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"error: no topology filename\n");
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return NULL;
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}
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sof_pdata->tplg_filename = tplg_filename;
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mach->mach_params.acpi_ipc_irq_index = desc->irqindex_host_ipc;
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return mach;
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}
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EXPORT_SYMBOL_NS(atom_machine_select, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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/* Atom DAIs */
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struct snd_soc_dai_driver atom_dai[] = {
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{
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.name = "ssp0-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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},
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},
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{
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.name = "ssp1-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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},
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},
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{
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.name = "ssp2-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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}
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},
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{
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.name = "ssp3-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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},
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},
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{
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.name = "ssp4-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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},
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},
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{
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.name = "ssp5-port",
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.playback = {
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.channels_min = 1,
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.channels_max = 8,
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},
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.capture = {
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.channels_min = 1,
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.channels_max = 8,
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},
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},
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};
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EXPORT_SYMBOL_NS(atom_dai, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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void atom_set_mach_params(struct snd_soc_acpi_mach *mach,
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struct snd_sof_dev *sdev)
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{
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struct snd_sof_pdata *pdata = sdev->pdata;
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const struct sof_dev_desc *desc = pdata->desc;
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struct snd_soc_acpi_mach_params *mach_params;
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mach_params = &mach->mach_params;
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mach_params->platform = dev_name(sdev->dev);
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mach_params->num_dai_drivers = desc->ops->num_drv;
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mach_params->dai_drivers = desc->ops->drv;
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}
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EXPORT_SYMBOL_NS(atom_set_mach_params, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
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MODULE_LICENSE("Dual BSD/GPL");
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