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ASoC: SOF: imx: Add i.MX8 HW support
Add support for the audio DSP hardware found on NXP i.MX8 platform. Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/r/20190821164730.7385-4-pierre-louis.bossart@linux.intel.com Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
parent
b9132b8993
commit
202acc565a
5 changed files with 422 additions and 0 deletions
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@ -173,6 +173,7 @@ config SND_SOC_SOF_PROBE_WORK_QUEUE
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When selected, the probe is handled in two steps, for example to
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avoid lockdeps if request_module is used in the probe.
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source "sound/soc/sof/imx/Kconfig"
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source "sound/soc/sof/intel/Kconfig"
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source "sound/soc/sof/xtensa/Kconfig"
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@ -18,4 +18,5 @@ obj-$(CONFIG_SND_SOC_SOF_OF) += snd-sof-of.o
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obj-$(CONFIG_SND_SOC_SOF_PCI) += snd-sof-pci.o
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obj-$(CONFIG_SND_SOC_SOF_INTEL_TOPLEVEL) += intel/
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obj-$(CONFIG_SND_SOC_SOF_IMX_TOPLEVEL) += imx/
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obj-$(CONFIG_SND_SOC_SOF_XTENSA) += xtensa/
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22
sound/soc/sof/imx/Kconfig
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22
sound/soc/sof/imx/Kconfig
Normal file
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@ -0,0 +1,22 @@
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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config SND_SOC_SOF_IMX_TOPLEVEL
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bool "SOF support for NXP i.MX audio DSPs"
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depends on ARM64 && SND_SOC_SOF_OF || COMPILE_TEST
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help
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This adds support for Sound Open Firmware for NXP i.MX platforms.
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Say Y if you have such a device.
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If unsure select "N".
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if SND_SOC_SOF_IMX_TOPLEVEL
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config SND_SOC_SOF_IMX8
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tristate "SOF support for i.MX8"
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depends on IMX_SCU
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depends on IMX_DSP
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help
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This adds support for Sound Open Firmware for NXP i.MX8 platforms
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Say Y if you have such a device.
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If unsure select "N".
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endif ## SND_SOC_SOF_IMX_IMX_TOPLEVEL
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4
sound/soc/sof/imx/Makefile
Normal file
4
sound/soc/sof/imx/Makefile
Normal file
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@ -0,0 +1,4 @@
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# SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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snd-sof-imx8-objs := imx8.o
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obj-$(CONFIG_SND_SOC_SOF_IMX8) += snd-sof-imx8.o
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394
sound/soc/sof/imx/imx8.c
Normal file
394
sound/soc/sof/imx/imx8.c
Normal file
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@ -0,0 +1,394 @@
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// SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause)
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//
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// Copyright 2019 NXP
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//
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// Author: Daniel Baluta <daniel.baluta@nxp.com>
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//
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// Hardware interface for audio DSP on i.MX8
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#include <linux/firmware.h>
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#include <linux/of_platform.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/pm_domain.h>
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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 <linux/firmware/imx/ipc.h>
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#include <linux/firmware/imx/dsp.h>
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#include <linux/firmware/imx/svc/misc.h>
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#include <dt-bindings/firmware/imx/rsrc.h>
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#include "../ops.h"
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/* DSP memories */
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#define IRAM_OFFSET 0x10000
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#define IRAM_SIZE (2 * 1024)
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#define DRAM0_OFFSET 0x0
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#define DRAM0_SIZE (32 * 1024)
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#define DRAM1_OFFSET 0x8000
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#define DRAM1_SIZE (32 * 1024)
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#define SYSRAM_OFFSET 0x18000
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#define SYSRAM_SIZE (256 * 1024)
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#define SYSROM_OFFSET 0x58000
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#define SYSROM_SIZE (192 * 1024)
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#define RESET_VECTOR_VADDR 0x596f8000
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#define MBOX_OFFSET 0x800000
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#define MBOX_SIZE 0x1000
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struct imx8_priv {
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struct device *dev;
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struct snd_sof_dev *sdev;
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/* DSP IPC handler */
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struct imx_dsp_ipc *dsp_ipc;
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struct platform_device *ipc_dev;
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/* System Controller IPC handler */
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struct imx_sc_ipc *sc_ipc;
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/* Power domain handling */
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int num_domains;
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struct device **pd_dev;
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struct device_link **link;
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};
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static void imx8_get_reply(struct snd_sof_dev *sdev)
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{
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struct snd_sof_ipc_msg *msg = sdev->msg;
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struct sof_ipc_reply reply;
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int ret = 0;
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if (!msg) {
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dev_warn(sdev->dev, "unexpected ipc interrupt\n");
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return;
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}
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/* get reply */
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sof_mailbox_read(sdev, sdev->host_box.offset, &reply, sizeof(reply));
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if (reply.error < 0) {
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memcpy(msg->reply_data, &reply, sizeof(reply));
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ret = reply.error;
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} else {
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/* reply has correct size? */
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if (reply.hdr.size != msg->reply_size) {
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dev_err(sdev->dev, "error: reply expected %zu got %u bytes\n",
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msg->reply_size, reply.hdr.size);
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ret = -EINVAL;
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}
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/* read the message */
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if (msg->reply_size > 0)
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sof_mailbox_read(sdev, sdev->host_box.offset,
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msg->reply_data, msg->reply_size);
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}
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msg->reply_error = ret;
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}
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static int imx8_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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static int imx8_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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void imx8_dsp_handle_reply(struct imx_dsp_ipc *ipc)
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{
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struct imx8_priv *priv = imx_dsp_get_data(ipc);
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unsigned long flags;
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spin_lock_irqsave(&priv->sdev->ipc_lock, flags);
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imx8_get_reply(priv->sdev);
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snd_sof_ipc_reply(priv->sdev, 0);
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spin_unlock_irqrestore(&priv->sdev->ipc_lock, flags);
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}
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void imx8_dsp_handle_request(struct imx_dsp_ipc *ipc)
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{
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struct imx8_priv *priv = imx_dsp_get_data(ipc);
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snd_sof_ipc_msgs_rx(priv->sdev);
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}
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struct imx_dsp_ops dsp_ops = {
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.handle_reply = imx8_dsp_handle_reply,
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.handle_request = imx8_dsp_handle_request,
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};
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static int imx8_send_msg(struct snd_sof_dev *sdev, struct snd_sof_ipc_msg *msg)
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{
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struct imx8_priv *priv = (struct imx8_priv *)sdev->private;
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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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imx_dsp_ring_doorbell(priv->dsp_ipc, 0);
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return 0;
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}
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/*
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* DSP control.
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*/
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static int imx8_run(struct snd_sof_dev *sdev)
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{
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struct imx8_priv *dsp_priv = (struct imx8_priv *)sdev->private;
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int ret;
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ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP,
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IMX_SC_C_OFS_SEL, 1);
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if (ret < 0) {
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dev_err(sdev->dev, "Error system address offset source select\n");
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return ret;
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}
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ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP,
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IMX_SC_C_OFS_AUDIO, 0x80);
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if (ret < 0) {
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dev_err(sdev->dev, "Error system address offset of AUDIO\n");
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return ret;
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}
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ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP,
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IMX_SC_C_OFS_PERIPH, 0x5A);
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if (ret < 0) {
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dev_err(sdev->dev, "Error system address offset of PERIPH %d\n",
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ret);
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return ret;
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}
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ret = imx_sc_misc_set_control(dsp_priv->sc_ipc, IMX_SC_R_DSP,
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IMX_SC_C_OFS_IRQ, 0x51);
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if (ret < 0) {
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dev_err(sdev->dev, "Error system address offset of IRQ\n");
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return ret;
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}
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imx_sc_pm_cpu_start(dsp_priv->sc_ipc, IMX_SC_R_DSP, true,
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RESET_VECTOR_VADDR);
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return 0;
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}
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static int imx8_probe(struct snd_sof_dev *sdev)
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{
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struct platform_device *pdev =
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container_of(sdev->dev, struct platform_device, dev);
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struct device_node *np = pdev->dev.of_node;
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struct device_node *res_node;
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struct resource *mmio;
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struct imx8_priv *priv;
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struct resource res;
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u32 base, size;
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int ret = 0;
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int i;
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priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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sdev->private = priv;
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priv->dev = sdev->dev;
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priv->sdev = sdev;
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/* power up device associated power domains */
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priv->num_domains = of_count_phandle_with_args(np, "power-domains",
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"#power-domain-cells");
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if (priv->num_domains < 0) {
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dev_err(sdev->dev, "no power-domains property in %pOF\n", np);
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return priv->num_domains;
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}
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priv->pd_dev = devm_kmalloc_array(&pdev->dev, priv->num_domains,
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sizeof(*priv->pd_dev), GFP_KERNEL);
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if (!priv)
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return -ENOMEM;
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priv->link = devm_kmalloc_array(&pdev->dev, priv->num_domains,
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sizeof(*priv->link), GFP_KERNEL);
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if (!priv->link)
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return -ENOMEM;
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for (i = 0; i < priv->num_domains; i++) {
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priv->pd_dev[i] = dev_pm_domain_attach_by_id(&pdev->dev, i);
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if (IS_ERR(priv->pd_dev[i])) {
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ret = PTR_ERR(priv->pd_dev[i]);
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goto exit_unroll_pm;
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}
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priv->link[i] = device_link_add(&pdev->dev, priv->pd_dev[i],
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DL_FLAG_STATELESS |
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DL_FLAG_PM_RUNTIME |
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DL_FLAG_RPM_ACTIVE);
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if (IS_ERR(priv->link[i])) {
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ret = PTR_ERR(priv->link[i]);
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dev_pm_domain_detach(priv->pd_dev[i], false);
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goto exit_unroll_pm;
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}
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}
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ret = imx_scu_get_handle(&priv->sc_ipc);
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if (ret) {
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dev_err(sdev->dev, "Cannot obtain SCU handle (err = %d)\n",
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ret);
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goto exit_unroll_pm;
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}
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priv->ipc_dev = platform_device_register_data(sdev->dev, "imx-dsp",
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PLATFORM_DEVID_NONE,
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pdev, sizeof(*pdev));
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if (IS_ERR(priv->ipc_dev)) {
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ret = PTR_ERR(priv->ipc_dev);
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goto exit_unroll_pm;
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}
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priv->dsp_ipc = dev_get_drvdata(&priv->ipc_dev->dev);
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if (!priv->dsp_ipc) {
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/* DSP IPC driver not probed yet, try later */
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ret = -EPROBE_DEFER;
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dev_err(sdev->dev, "Failed to get drvdata\n");
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goto exit_pdev_unregister;
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}
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imx_dsp_set_data(priv->dsp_ipc, priv);
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priv->dsp_ipc->ops = &dsp_ops;
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/* DSP base */
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mmio = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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if (mmio) {
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base = mmio->start;
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size = resource_size(mmio);
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} else {
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dev_err(sdev->dev, "error: failed to get DSP base at idx 0\n");
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ret = -EINVAL;
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goto exit_pdev_unregister;
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}
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sdev->bar[SOF_FW_BLK_TYPE_IRAM] = devm_ioremap(sdev->dev, base, size);
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if (!sdev->bar[SOF_FW_BLK_TYPE_IRAM]) {
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dev_err(sdev->dev, "failed to ioremap base 0x%x size 0x%x\n",
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base, size);
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ret = -ENODEV;
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goto exit_pdev_unregister;
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}
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sdev->mmio_bar = SOF_FW_BLK_TYPE_IRAM;
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res_node = of_parse_phandle(np, "memory-region", 0);
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if (!res_node) {
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dev_err(&pdev->dev, "failed to get memory region node\n");
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ret = -ENODEV;
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goto exit_pdev_unregister;
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}
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ret = of_address_to_resource(res_node, 0, &res);
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if (ret) {
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dev_err(&pdev->dev, "failed to get reserved region address\n");
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goto exit_pdev_unregister;
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}
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sdev->bar[SOF_FW_BLK_TYPE_SRAM] = devm_ioremap_wc(sdev->dev, res.start,
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res.end - res.start +
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1);
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if (IS_ERR(sdev->bar[SOF_FW_BLK_TYPE_SRAM])) {
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dev_err(sdev->dev, "failed to ioremap mem 0x%x size 0x%x\n",
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base, size);
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ret = PTR_ERR(sdev->bar[SOF_FW_BLK_TYPE_SRAM]);
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goto exit_pdev_unregister;
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}
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sdev->mailbox_bar = SOF_FW_BLK_TYPE_SRAM;
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return 0;
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exit_pdev_unregister:
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platform_device_unregister(priv->ipc_dev);
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exit_unroll_pm:
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while (--i >= 0) {
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device_link_del(priv->link[i]);
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dev_pm_domain_detach(priv->pd_dev[i], false);
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}
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return ret;
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}
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static int imx8_remove(struct snd_sof_dev *sdev)
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{
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struct imx8_priv *priv = (struct imx8_priv *)sdev->private;
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int i;
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platform_device_unregister(priv->ipc_dev);
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for (i = 0; i < priv->num_domains; i++) {
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device_link_del(priv->link[i]);
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dev_pm_domain_detach(priv->pd_dev[i], false);
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}
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return 0;
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}
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/* on i.MX8 there is 1 to 1 match between type and BAR idx */
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int imx8_get_bar_index(struct snd_sof_dev *sdev, u32 type)
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{
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return type;
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}
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void imx8_ipc_msg_data(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream,
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void *p, size_t sz)
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{
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sof_mailbox_read(sdev, sdev->dsp_box.offset, p, sz);
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}
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int imx8_ipc_pcm_params(struct snd_sof_dev *sdev,
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struct snd_pcm_substream *substream,
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const struct sof_ipc_pcm_params_reply *reply)
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{
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return 0;
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}
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static struct snd_soc_dai_driver imx8_dai[] = {
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{
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.name = "esai-port",
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},
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};
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/* i.MX8 ops */
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struct snd_sof_dsp_ops sof_imx8_ops = {
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/* probe and remove */
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.probe = imx8_probe,
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.remove = imx8_remove,
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/* DSP core boot */
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.run = imx8_run,
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/* Block IO */
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.block_read = sof_block_read,
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.block_write = sof_block_write,
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/* ipc */
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.send_msg = imx8_send_msg,
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.fw_ready = sof_fw_ready,
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.get_mailbox_offset = imx8_get_mailbox_offset,
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.get_window_offset = imx8_get_window_offset,
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.ipc_msg_data = imx8_ipc_msg_data,
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.ipc_pcm_params = imx8_ipc_pcm_params,
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/* module loading */
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.load_module = snd_sof_parse_module_memcpy,
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.get_bar_index = imx8_get_bar_index,
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/* firmware loading */
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.load_firmware = snd_sof_load_firmware_memcpy,
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/* DAI drivers */
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.drv = imx8_dai,
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.num_drv = 1, /* we have only 1 ESAI interface on i.MX8 */
|
||||
};
|
||||
EXPORT_SYMBOL(sof_imx8_ops);
|
||||
|
||||
MODULE_LICENSE("Dual BSD/GPL");
|
Loading…
Reference in a new issue