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-rw-r--r--sound/soc/sof/intel/atom.c463
1 files changed, 463 insertions, 0 deletions
diff --git a/sound/soc/sof/intel/atom.c b/sound/soc/sof/intel/atom.c
new file mode 100644
index 000000000000..d8804efede5e
--- /dev/null
+++ b/sound/soc/sof/intel/atom.c
@@ -0,0 +1,463 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-3-Clause)
+//
+// This file is provided under a dual BSD/GPLv2 license. When using or
+// redistributing this file, you may do so under either license.
+//
+// Copyright(c) 2018-2021 Intel Corporation. All rights reserved.
+//
+// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
+//
+
+/*
+ * Hardware interface for audio DSP on Atom devices
+ */
+
+#include <linux/module.h>
+#include <sound/sof.h>
+#include <sound/sof/xtensa.h>
+#include <sound/soc-acpi.h>
+#include <sound/soc-acpi-intel-match.h>
+#include <sound/intel-dsp-config.h>
+#include "../ops.h"
+#include "shim.h"
+#include "atom.h"
+#include "../sof-acpi-dev.h"
+#include "../sof-audio.h"
+#include "../../intel/common/soc-intel-quirks.h"
+
+static void atom_host_done(struct snd_sof_dev *sdev);
+static void atom_dsp_done(struct snd_sof_dev *sdev);
+static void atom_get_reply(struct snd_sof_dev *sdev);
+
+/*
+ * Debug
+ */
+
+static void atom_get_registers(struct snd_sof_dev *sdev,
+ struct sof_ipc_dsp_oops_xtensa *xoops,
+ struct sof_ipc_panic_info *panic_info,
+ u32 *stack, size_t stack_words)
+{
+ u32 offset = sdev->dsp_oops_offset;
+
+ /* first read regsisters */
+ sof_mailbox_read(sdev, offset, xoops, sizeof(*xoops));
+
+ /* note: variable AR register array is not read */
+
+ /* then get panic info */
+ if (xoops->arch_hdr.totalsize > EXCEPT_MAX_HDR_SIZE) {
+ dev_err(sdev->dev, "invalid header size 0x%x. FW oops is bogus\n",
+ xoops->arch_hdr.totalsize);
+ return;
+ }
+ offset += xoops->arch_hdr.totalsize;
+ sof_mailbox_read(sdev, offset, panic_info, sizeof(*panic_info));
+
+ /* then get the stack */
+ offset += sizeof(*panic_info);
+ sof_mailbox_read(sdev, offset, stack, stack_words * sizeof(u32));
+}
+
+void atom_dump(struct snd_sof_dev *sdev, u32 flags)
+{
+ struct sof_ipc_dsp_oops_xtensa xoops;
+ struct sof_ipc_panic_info panic_info;
+ u32 stack[STACK_DUMP_SIZE];
+ u64 status, panic, imrd, imrx;
+
+ /* now try generic SOF status messages */
+ status = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
+ panic = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
+ atom_get_registers(sdev, &xoops, &panic_info, stack,
+ STACK_DUMP_SIZE);
+ snd_sof_get_status(sdev, status, panic, &xoops, &panic_info, stack,
+ STACK_DUMP_SIZE);
+
+ /* provide some context for firmware debug */
+ imrx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRX);
+ imrd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IMRD);
+ dev_err(sdev->dev,
+ "error: ipc host -> DSP: pending %s complete %s raw 0x%llx\n",
+ (panic & SHIM_IPCX_BUSY) ? "yes" : "no",
+ (panic & SHIM_IPCX_DONE) ? "yes" : "no", panic);
+ dev_err(sdev->dev,
+ "error: mask host: pending %s complete %s raw 0x%llx\n",
+ (imrx & SHIM_IMRX_BUSY) ? "yes" : "no",
+ (imrx & SHIM_IMRX_DONE) ? "yes" : "no", imrx);
+ dev_err(sdev->dev,
+ "error: ipc DSP -> host: pending %s complete %s raw 0x%llx\n",
+ (status & SHIM_IPCD_BUSY) ? "yes" : "no",
+ (status & SHIM_IPCD_DONE) ? "yes" : "no", status);
+ dev_err(sdev->dev,
+ "error: mask DSP: pending %s complete %s raw 0x%llx\n",
+ (imrd & SHIM_IMRD_BUSY) ? "yes" : "no",
+ (imrd & SHIM_IMRD_DONE) ? "yes" : "no", imrd);
+
+}
+EXPORT_SYMBOL_NS(atom_dump, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+/*
+ * IPC Doorbell IRQ handler and thread.
+ */
+
+irqreturn_t atom_irq_handler(int irq, void *context)
+{
+ struct snd_sof_dev *sdev = context;
+ u64 ipcx, ipcd;
+ int ret = IRQ_NONE;
+
+ ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
+ ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
+
+ if (ipcx & SHIM_BYT_IPCX_DONE) {
+
+ /* reply message from DSP, Mask Done interrupt first */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
+ SHIM_IMRX,
+ SHIM_IMRX_DONE,
+ SHIM_IMRX_DONE);
+ ret = IRQ_WAKE_THREAD;
+ }
+
+ if (ipcd & SHIM_BYT_IPCD_BUSY) {
+
+ /* new message from DSP, Mask Busy interrupt first */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR,
+ SHIM_IMRX,
+ SHIM_IMRX_BUSY,
+ SHIM_IMRX_BUSY);
+ ret = IRQ_WAKE_THREAD;
+ }
+
+ return ret;
+}
+EXPORT_SYMBOL_NS(atom_irq_handler, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+irqreturn_t atom_irq_thread(int irq, void *context)
+{
+ struct snd_sof_dev *sdev = context;
+ u64 ipcx, ipcd;
+
+ ipcx = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCX);
+ ipcd = snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_IPCD);
+
+ /* reply message from DSP */
+ if (ipcx & SHIM_BYT_IPCX_DONE) {
+
+ spin_lock_irq(&sdev->ipc_lock);
+
+ /*
+ * handle immediate reply from DSP core. If the msg is
+ * found, set done bit in cmd_done which is called at the
+ * end of message processing function, else set it here
+ * because the done bit can't be set in cmd_done function
+ * which is triggered by msg
+ */
+ atom_get_reply(sdev);
+ snd_sof_ipc_reply(sdev, ipcx);
+
+ atom_dsp_done(sdev);
+
+ spin_unlock_irq(&sdev->ipc_lock);
+ }
+
+ /* new message from DSP */
+ if (ipcd & SHIM_BYT_IPCD_BUSY) {
+
+ /* Handle messages from DSP Core */
+ if ((ipcd & SOF_IPC_PANIC_MAGIC_MASK) == SOF_IPC_PANIC_MAGIC) {
+ snd_sof_dsp_panic(sdev, PANIC_OFFSET(ipcd) +
+ MBOX_OFFSET);
+ } else {
+ snd_sof_ipc_msgs_rx(sdev);
+ }
+
+ atom_host_done(sdev);
+ }
+
+ return IRQ_HANDLED;
+}
+EXPORT_SYMBOL_NS(atom_irq_thread, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+int atom_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
+{
+ /* unmask and prepare to receive Done interrupt */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
+ SHIM_IMRX_DONE, 0);
+
+ /* send the message */
+ sof_mailbox_write(sdev, sdev->host_box.offset, msg->msg_data,
+ msg->msg_size);
+ snd_sof_dsp_write64(sdev, DSP_BAR, SHIM_IPCX, SHIM_BYT_IPCX_BUSY);
+
+ return 0;
+}
+EXPORT_SYMBOL_NS(atom_send_msg, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+static void atom_get_reply(struct snd_sof_dev *sdev)
+{
+ struct snd_sof_ipc_msg *msg = sdev->msg;
+ struct sof_ipc_reply reply;
+ int ret = 0;
+
+ /*
+ * Sometimes, there is unexpected reply ipc arriving. The reply
+ * ipc belongs to none of the ipcs sent from driver.
+ * In this case, the driver must ignore the ipc.
+ */
+ if (!msg) {
+ dev_warn(sdev->dev, "unexpected ipc interrupt raised!\n");
+ return;
+ }
+
+ /* get reply */
+ sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
+
+ if (reply.error < 0) {
+ memcpy(msg->reply_data, &reply, sizeof(reply));
+ ret = reply.error;
+ } else {
+ /* reply correct size ? */
+ if (reply.hdr.size != msg->reply_size) {
+ dev_err(sdev->dev, "error: reply expected %zu got %u bytes\n",
+ msg->reply_size, reply.hdr.size);
+ ret = -EINVAL;
+ }
+
+ /* read the message */
+ if (msg->reply_size > 0)
+ sof_mailbox_read(sdev, sdev->host_box.offset,
+ msg->reply_data, msg->reply_size);
+ }
+
+ msg->reply_error = ret;
+}
+
+int atom_get_mailbox_offset(struct snd_sof_dev *sdev)
+{
+ return MBOX_OFFSET;
+}
+EXPORT_SYMBOL_NS(atom_get_mailbox_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+int atom_get_window_offset(struct snd_sof_dev *sdev, u32 id)
+{
+ return MBOX_OFFSET;
+}
+EXPORT_SYMBOL_NS(atom_get_window_offset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+static void atom_host_done(struct snd_sof_dev *sdev)
+{
+ /* clear BUSY bit and set DONE bit - accept new messages */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCD,
+ SHIM_BYT_IPCD_BUSY |
+ SHIM_BYT_IPCD_DONE,
+ SHIM_BYT_IPCD_DONE);
+
+ /* unmask and prepare to receive next new message */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IMRX,
+ SHIM_IMRX_BUSY, 0);
+}
+
+static void atom_dsp_done(struct snd_sof_dev *sdev)
+{
+ /* clear DONE bit - tell DSP we have completed */
+ snd_sof_dsp_update_bits64_unlocked(sdev, DSP_BAR, SHIM_IPCX,
+ SHIM_BYT_IPCX_DONE, 0);
+}
+
+/*
+ * DSP control.
+ */
+
+int atom_run(struct snd_sof_dev *sdev)
+{
+ int tries = 10;
+
+ /* release stall and wait to unstall */
+ snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
+ SHIM_BYT_CSR_STALL, 0x0);
+ while (tries--) {
+ if (!(snd_sof_dsp_read64(sdev, DSP_BAR, SHIM_CSR) &
+ SHIM_BYT_CSR_PWAITMODE))
+ break;
+ msleep(100);
+ }
+ if (tries < 0) {
+ dev_err(sdev->dev, "error: unable to run DSP firmware\n");
+ atom_dump(sdev, SOF_DBG_DUMP_REGS | SOF_DBG_DUMP_MBOX);
+ return -ENODEV;
+ }
+
+ /* return init core mask */
+ return 1;
+}
+EXPORT_SYMBOL_NS(atom_run, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+int atom_reset(struct snd_sof_dev *sdev)
+{
+ /* put DSP into reset, set reset vector and stall */
+ snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
+ SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
+ SHIM_BYT_CSR_STALL,
+ SHIM_BYT_CSR_RST | SHIM_BYT_CSR_VECTOR_SEL |
+ SHIM_BYT_CSR_STALL);
+
+ usleep_range(10, 15);
+
+ /* take DSP out of reset and keep stalled for FW loading */
+ snd_sof_dsp_update_bits64(sdev, DSP_BAR, SHIM_CSR,
+ SHIM_BYT_CSR_RST, 0);
+
+ return 0;
+}
+EXPORT_SYMBOL_NS(atom_reset, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+static const char *fixup_tplg_name(struct snd_sof_dev *sdev,
+ const char *sof_tplg_filename,
+ const char *ssp_str)
+{
+ const char *tplg_filename = NULL;
+ char *filename;
+ char *split_ext;
+
+ filename = devm_kstrdup(sdev->dev, sof_tplg_filename, GFP_KERNEL);
+ if (!filename)
+ return NULL;
+
+ /* this assumes a .tplg extension */
+ split_ext = strsep(&filename, ".");
+ if (split_ext) {
+ tplg_filename = devm_kasprintf(sdev->dev, GFP_KERNEL,
+ "%s-%s.tplg",
+ split_ext, ssp_str);
+ if (!tplg_filename)
+ return NULL;
+ }
+ return tplg_filename;
+}
+
+void atom_machine_select(struct snd_sof_dev *sdev)
+{
+ struct snd_sof_pdata *sof_pdata = sdev->pdata;
+ const struct sof_dev_desc *desc = sof_pdata->desc;
+ struct snd_soc_acpi_mach *mach;
+ struct platform_device *pdev;
+ const char *tplg_filename;
+
+ mach = snd_soc_acpi_find_machine(desc->machines);
+ if (!mach) {
+ dev_warn(sdev->dev, "warning: No matching ASoC machine driver found\n");
+ return;
+ }
+
+ pdev = to_platform_device(sdev->dev);
+ if (soc_intel_is_byt_cr(pdev)) {
+ dev_dbg(sdev->dev,
+ "BYT-CR detected, SSP0 used instead of SSP2\n");
+
+ tplg_filename = fixup_tplg_name(sdev,
+ mach->sof_tplg_filename,
+ "ssp0");
+ } else {
+ tplg_filename = mach->sof_tplg_filename;
+ }
+
+ if (!tplg_filename) {
+ dev_dbg(sdev->dev,
+ "error: no topology filename\n");
+ return;
+ }
+
+ sof_pdata->tplg_filename = tplg_filename;
+ mach->mach_params.acpi_ipc_irq_index = desc->irqindex_host_ipc;
+ sof_pdata->machine = mach;
+}
+EXPORT_SYMBOL_NS(atom_machine_select, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+/* Atom DAIs */
+struct snd_soc_dai_driver atom_dai[] = {
+{
+ .name = "ssp0-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+},
+{
+ .name = "ssp1-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+},
+{
+ .name = "ssp2-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ }
+},
+{
+ .name = "ssp3-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+},
+{
+ .name = "ssp4-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+},
+{
+ .name = "ssp5-port",
+ .playback = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+ .capture = {
+ .channels_min = 1,
+ .channels_max = 8,
+ },
+},
+};
+EXPORT_SYMBOL_NS(atom_dai, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+void atom_set_mach_params(const struct snd_soc_acpi_mach *mach,
+ struct snd_sof_dev *sdev)
+{
+ struct snd_sof_pdata *pdata = sdev->pdata;
+ const struct sof_dev_desc *desc = pdata->desc;
+ struct snd_soc_acpi_mach_params *mach_params;
+
+ mach_params = (struct snd_soc_acpi_mach_params *)&mach->mach_params;
+ mach_params->platform = dev_name(sdev->dev);
+ mach_params->num_dai_drivers = desc->ops->num_drv;
+ mach_params->dai_drivers = desc->ops->drv;
+}
+EXPORT_SYMBOL_NS(atom_set_mach_params, SND_SOC_SOF_INTEL_ATOM_HIFI_EP);
+
+MODULE_LICENSE("Dual BSD/GPL");