Commit e49bcf4f authored by Mark Brown's avatar Mark Brown

Merge series "Add audio driver base on rpmsg on i.MX platform" from Shengjiu...

Merge series "Add audio driver base on rpmsg on i.MX platform" from Shengjiu Wang <shengjiu.wang@nxp.com>:

On Asymmetric multiprocessor, there is Cortex-A core and Cortex-M core,
Linux is running on A core, RTOS is running on M core.
The audio hardware device can be controlled by Cortex-M device,
So audio playback/capture can be handled by M core.

Rpmsg is the interface for sending and receiving msg to and from M
core, that we can create a virtual sound on Cortex-A core side.

A core will tell the Cortex-M core sound format/rate/channel,
where is the data buffer, what is the period size, when to start,
when to stop and when suspend or resume happen, each of this behavior
there is defined rpmsg command.

Especially we designed the low power audio case, that is to
allocate a large buffer and fill the data, then Cortex-A core can go
to sleep mode, Cortex-M core continue to play the sound, when the
buffer is consumed, Cortex-M core will trigger the Cortex-A core to
wakeup to fill data.

changes in v5:
- remove unneeded property in binding doc and driver
- update binding doc according to Rob's comments.
- Fix link issue reported by kernel test robot

changes in v4:
- remove the sound card node, merge the property to cpu dai node
  according to Rob's comments.
- sound card device will be registered by cpu dai driver.
- Fix do_div issue reported by kernel test robot

changes in v3:
- add local refcount for clk enablement in hw_params()
- update the document according Rob's comments

changes in v2:
- update codes and comments according to Mark's comments

Shengjiu Wang (6):
  ASoC: soc-component: Add snd_soc_pcm_component_ack
  ASoC: fsl_rpmsg: Add CPU DAI driver for audio base on rpmsg
  ASoC: dt-bindings: fsl_rpmsg: Add binding doc for rpmsg audio device
  ASoC: imx-audio-rpmsg: Add rpmsg_driver for audio channel
  ASoC: imx-pcm-rpmsg: Add platform driver for audio base on rpmsg
  ASoC: imx-rpmsg: Add machine driver for audio base on rpmsg

 .../devicetree/bindings/sound/fsl,rpmsg.yaml  | 108 +++
 include/sound/soc-component.h                 |   3 +
 sound/soc/fsl/Kconfig                         |  30 +
 sound/soc/fsl/Makefile                        |   6 +
 sound/soc/fsl/fsl_rpmsg.c                     | 279 ++++++
 sound/soc/fsl/fsl_rpmsg.h                     |  35 +
 sound/soc/fsl/imx-audio-rpmsg.c               | 140 +++
 sound/soc/fsl/imx-pcm-rpmsg.c                 | 918 ++++++++++++++++++
 sound/soc/fsl/imx-pcm-rpmsg.h                 | 512 ++++++++++
 sound/soc/fsl/imx-rpmsg.c                     | 150 +++
 sound/soc/soc-component.c                     |  14 +
 sound/soc/soc-pcm.c                           |   2 +
 12 files changed, 2197 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/sound/fsl,rpmsg.yaml
 create mode 100644 sound/soc/fsl/fsl_rpmsg.c
 create mode 100644 sound/soc/fsl/fsl_rpmsg.h
 create mode 100644 sound/soc/fsl/imx-audio-rpmsg.c
 create mode 100644 sound/soc/fsl/imx-pcm-rpmsg.c
 create mode 100644 sound/soc/fsl/imx-pcm-rpmsg.h
 create mode 100644 sound/soc/fsl/imx-rpmsg.c

--
2.27.0
parents b9af3fb7 39f8405c
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/sound/fsl,rpmsg.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NXP Audio RPMSG CPU DAI Controller
maintainers:
- Shengjiu Wang <shengjiu.wang@nxp.com>
description: |
fsl_rpmsg is a virtual audio device. Mapping to real hardware devices
are SAI, DMA controlled by Cortex M core. What we see from Linux
side is a device which provides audio service by rpmsg channel.
properties:
compatible:
enum:
- fsl,imx7ulp-rpmsg-audio
- fsl,imx8mn-rpmsg-audio
- fsl,imx8mm-rpmsg-audio
- fsl,imx8mp-rpmsg-audio
model:
$ref: /schemas/types.yaml#/definitions/string
description: User specified audio sound card name
clocks:
items:
- description: Peripheral clock for register access
- description: Master clock
- description: DMA clock for DMA register access
- description: Parent clock for multiple of 8kHz sample rates
- description: Parent clock for multiple of 11kHz sample rates
clock-names:
items:
- const: ipg
- const: mclk
- const: dma
- const: pll8k
- const: pll11k
power-domains:
description:
List of phandle and PM domain specifier as documented in
Documentation/devicetree/bindings/power/power_domain.txt
maxItems: 1
memory-region:
$ref: /schemas/types.yaml#/definitions/phandle
description:
phandle to a node describing reserved memory (System RAM memory)
The M core can't access all the DDR memory space on some platform,
So reserved a specific memory for dma buffer which M core can
access.
(see bindings/reserved-memory/reserved-memory.txt)
audio-codec:
$ref: /schemas/types.yaml#/definitions/phandle
description: The phandle to a node of audio codec
audio-routing:
$ref: /schemas/types.yaml#/definitions/non-unique-string-array
description: |
A list of the connections between audio components. Each entry is a
pair of strings, the first being the connection's sink, the second
being the connection's source.
fsl,enable-lpa:
$ref: /schemas/types.yaml#/definitions/flag
description: enable low power audio path.
fsl,rpmsg-out:
$ref: /schemas/types.yaml#/definitions/flag
description: |
This is a boolean property. If present, the transmitting function
will be enabled.
fsl,rpmsg-in:
$ref: /schemas/types.yaml#/definitions/flag
description: |
This is a boolean property. If present, the receiving function
will be enabled.
required:
- compatible
- model
additionalProperties: false
examples:
- |
#include <dt-bindings/clock/imx8mn-clock.h>
rpmsg_audio: rpmsg_audio {
compatible = "fsl,imx8mn-rpmsg-audio";
model = "wm8524-audio";
fsl,enable-lpa;
fsl,rpmsg-out;
clocks = <&clk IMX8MN_CLK_SAI3_IPG>,
<&clk IMX8MN_CLK_SAI3_ROOT>,
<&clk IMX8MN_CLK_SDMA3_ROOT>,
<&clk IMX8MN_AUDIO_PLL1_OUT>,
<&clk IMX8MN_AUDIO_PLL2_OUT>;
clock-names = "ipg", "mclk", "dma", "pll8k", "pll11k";
};
...@@ -146,6 +146,8 @@ struct snd_soc_component_driver { ...@@ -146,6 +146,8 @@ struct snd_soc_component_driver {
int (*mmap)(struct snd_soc_component *component, int (*mmap)(struct snd_soc_component *component,
struct snd_pcm_substream *substream, struct snd_pcm_substream *substream,
struct vm_area_struct *vma); struct vm_area_struct *vma);
int (*ack)(struct snd_soc_component *component,
struct snd_pcm_substream *substream);
const struct snd_compress_ops *compress_ops; const struct snd_compress_ops *compress_ops;
...@@ -498,5 +500,6 @@ int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd, ...@@ -498,5 +500,6 @@ int snd_soc_pcm_component_pm_runtime_get(struct snd_soc_pcm_runtime *rtd,
void *stream); void *stream);
void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd, void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
void *stream, int rollback); void *stream, int rollback);
int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream);
#endif /* __SOC_COMPONENT_H */ #endif /* __SOC_COMPONENT_H */
...@@ -115,10 +115,29 @@ config SND_SOC_FSL_AUD2HTX ...@@ -115,10 +115,29 @@ config SND_SOC_FSL_AUD2HTX
config SND_SOC_FSL_UTILS config SND_SOC_FSL_UTILS
tristate tristate
config SND_SOC_FSL_RPMSG
tristate "NXP Audio Base On RPMSG support"
depends on COMMON_CLK
depends on RPMSG
select SND_SOC_IMX_RPMSG if SND_IMX_SOC != n
help
Say Y if you want to add rpmsg audio support for the Freescale CPUs.
This option is only useful for out-of-tree drivers since
in-tree drivers select it automatically.
config SND_SOC_IMX_PCM_DMA config SND_SOC_IMX_PCM_DMA
tristate tristate
select SND_SOC_GENERIC_DMAENGINE_PCM select SND_SOC_GENERIC_DMAENGINE_PCM
config SND_SOC_IMX_AUDIO_RPMSG
tristate
depends on RPMSG
config SND_SOC_IMX_PCM_RPMSG
tristate
depends on SND_SOC_IMX_AUDIO_RPMSG
select SND_SOC_GENERIC_DMAENGINE_PCM
config SND_SOC_IMX_AUDMUX config SND_SOC_IMX_AUDMUX
tristate "Digital Audio Mux module support" tristate "Digital Audio Mux module support"
help help
...@@ -320,6 +339,17 @@ config SND_SOC_IMX_HDMI ...@@ -320,6 +339,17 @@ config SND_SOC_IMX_HDMI
Say Y if you want to add support for SoC audio on an i.MX board with Say Y if you want to add support for SoC audio on an i.MX board with
IMX HDMI. IMX HDMI.
config SND_SOC_IMX_RPMSG
tristate "SoC Audio support for i.MX boards with rpmsg"
depends on RPMSG
select SND_SOC_IMX_PCM_RPMSG
select SND_SOC_IMX_AUDIO_RPMSG
help
SoC Audio support for i.MX boards with rpmsg.
There should be rpmsg devices defined in other core (M core)
Say Y if you want to add support for SoC audio on an i.MX board with
a rpmsg devices.
endif # SND_IMX_SOC endif # SND_IMX_SOC
endmenu endmenu
...@@ -27,6 +27,7 @@ snd-soc-fsl-mqs-objs := fsl_mqs.o ...@@ -27,6 +27,7 @@ snd-soc-fsl-mqs-objs := fsl_mqs.o
snd-soc-fsl-easrc-objs := fsl_easrc.o snd-soc-fsl-easrc-objs := fsl_easrc.o
snd-soc-fsl-xcvr-objs := fsl_xcvr.o snd-soc-fsl-xcvr-objs := fsl_xcvr.o
snd-soc-fsl-aud2htx-objs := fsl_aud2htx.o snd-soc-fsl-aud2htx-objs := fsl_aud2htx.o
snd-soc-fsl-rpmsg-objs := fsl_rpmsg.o
obj-$(CONFIG_SND_SOC_FSL_AUDMIX) += snd-soc-fsl-audmix.o obj-$(CONFIG_SND_SOC_FSL_AUDMIX) += snd-soc-fsl-audmix.o
obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o
...@@ -42,6 +43,7 @@ obj-$(CONFIG_SND_SOC_FSL_EASRC) += snd-soc-fsl-easrc.o ...@@ -42,6 +43,7 @@ obj-$(CONFIG_SND_SOC_FSL_EASRC) += snd-soc-fsl-easrc.o
obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o
obj-$(CONFIG_SND_SOC_FSL_XCVR) += snd-soc-fsl-xcvr.o obj-$(CONFIG_SND_SOC_FSL_XCVR) += snd-soc-fsl-xcvr.o
obj-$(CONFIG_SND_SOC_FSL_AUD2HTX) += snd-soc-fsl-aud2htx.o obj-$(CONFIG_SND_SOC_FSL_AUD2HTX) += snd-soc-fsl-aud2htx.o
obj-$(CONFIG_SND_SOC_FSL_RPMSG) += snd-soc-fsl-rpmsg.o
# MPC5200 Platform Support # MPC5200 Platform Support
obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o obj-$(CONFIG_SND_MPC52xx_DMA) += mpc5200_dma.o
...@@ -58,6 +60,8 @@ obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o ...@@ -58,6 +60,8 @@ obj-$(CONFIG_SND_SOC_IMX_AUDMUX) += snd-soc-imx-audmux.o
obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += imx-pcm-fiq.o obj-$(CONFIG_SND_SOC_IMX_PCM_FIQ) += imx-pcm-fiq.o
obj-$(CONFIG_SND_SOC_IMX_PCM_DMA) += imx-pcm-dma.o obj-$(CONFIG_SND_SOC_IMX_PCM_DMA) += imx-pcm-dma.o
obj-$(CONFIG_SND_SOC_IMX_AUDIO_RPMSG) += imx-audio-rpmsg.o
obj-$(CONFIG_SND_SOC_IMX_PCM_RPMSG) += imx-pcm-rpmsg.o
# i.MX Machine Support # i.MX Machine Support
snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o snd-soc-eukrea-tlv320-objs := eukrea-tlv320.o
...@@ -66,6 +70,7 @@ snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o ...@@ -66,6 +70,7 @@ snd-soc-imx-sgtl5000-objs := imx-sgtl5000.o
snd-soc-imx-spdif-objs := imx-spdif.o snd-soc-imx-spdif-objs := imx-spdif.o
snd-soc-imx-audmix-objs := imx-audmix.o snd-soc-imx-audmix-objs := imx-audmix.o
snd-soc-imx-hdmi-objs := imx-hdmi.o snd-soc-imx-hdmi-objs := imx-hdmi.o
snd-soc-imx-rpmsg-objs := imx-rpmsg.o
obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o obj-$(CONFIG_SND_SOC_EUKREA_TLV320) += snd-soc-eukrea-tlv320.o
obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o obj-$(CONFIG_SND_SOC_IMX_ES8328) += snd-soc-imx-es8328.o
...@@ -73,3 +78,4 @@ obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o ...@@ -73,3 +78,4 @@ obj-$(CONFIG_SND_SOC_IMX_SGTL5000) += snd-soc-imx-sgtl5000.o
obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o obj-$(CONFIG_SND_SOC_IMX_SPDIF) += snd-soc-imx-spdif.o
obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o obj-$(CONFIG_SND_SOC_IMX_AUDMIX) += snd-soc-imx-audmix.o
obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o obj-$(CONFIG_SND_SOC_IMX_HDMI) += snd-soc-imx-hdmi.o
obj-$(CONFIG_SND_SOC_IMX_RPMSG) += snd-soc-imx-rpmsg.o
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2018-2021 NXP
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/dmaengine.h>
#include <linux/module.h>
#include <linux/of_device.h>
#include <linux/of_address.h>
#include <linux/pm_runtime.h>
#include <linux/rpmsg.h>
#include <linux/slab.h>
#include <sound/core.h>
#include <sound/dmaengine_pcm.h>
#include <sound/pcm_params.h>
#include "fsl_rpmsg.h"
#include "imx-pcm.h"
#define FSL_RPMSG_RATES (SNDRV_PCM_RATE_8000 | \
SNDRV_PCM_RATE_16000 | \
SNDRV_PCM_RATE_48000)
#define FSL_RPMSG_FORMATS SNDRV_PCM_FMTBIT_S16_LE
/* 192kHz/32bit/2ch/60s size is 0x574e00 */
#define LPA_LARGE_BUFFER_SIZE (0x6000000)
static const unsigned int fsl_rpmsg_rates[] = {
8000, 11025, 16000, 22050, 44100,
32000, 48000, 96000, 88200, 176400, 192000,
352800, 384000, 705600, 768000, 1411200, 2822400,
};
static const struct snd_pcm_hw_constraint_list fsl_rpmsg_rate_constraints = {
.count = ARRAY_SIZE(fsl_rpmsg_rates),
.list = fsl_rpmsg_rates,
};
static int fsl_rpmsg_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
{
struct fsl_rpmsg *rpmsg = snd_soc_dai_get_drvdata(dai);
struct clk *p = rpmsg->mclk, *pll = 0, *npll = 0;
u64 rate = params_rate(params);
int ret = 0;
/* Get current pll parent */
while (p && rpmsg->pll8k && rpmsg->pll11k) {
struct clk *pp = clk_get_parent(p);
if (clk_is_match(pp, rpmsg->pll8k) ||
clk_is_match(pp, rpmsg->pll11k)) {
pll = pp;
break;
}
p = pp;
}
/* Switch to another pll parent if needed. */
if (pll) {
npll = (do_div(rate, 8000) ? rpmsg->pll11k : rpmsg->pll8k);
if (!clk_is_match(pll, npll)) {
ret = clk_set_parent(p, npll);
if (ret < 0)
dev_warn(dai->dev, "failed to set parent %s: %d\n",
__clk_get_name(npll), ret);
}
}
if (!(rpmsg->mclk_streams & BIT(substream->stream))) {
ret = clk_prepare_enable(rpmsg->mclk);
if (ret) {
dev_err(dai->dev, "failed to enable mclk: %d\n", ret);
return ret;
}
rpmsg->mclk_streams |= BIT(substream->stream);
}
return ret;
}
static int fsl_rpmsg_hw_free(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct fsl_rpmsg *rpmsg = snd_soc_dai_get_drvdata(dai);
if (rpmsg->mclk_streams & BIT(substream->stream)) {
clk_disable_unprepare(rpmsg->mclk);
rpmsg->mclk_streams &= ~BIT(substream->stream);
}
return 0;
}
static int fsl_rpmsg_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *cpu_dai)
{
int ret;
ret = snd_pcm_hw_constraint_list(substream->runtime, 0,
SNDRV_PCM_HW_PARAM_RATE,
&fsl_rpmsg_rate_constraints);
return ret;
}
static const struct snd_soc_dai_ops fsl_rpmsg_dai_ops = {
.startup = fsl_rpmsg_startup,
.hw_params = fsl_rpmsg_hw_params,
.hw_free = fsl_rpmsg_hw_free,
};
static struct snd_soc_dai_driver fsl_rpmsg_dai = {
.playback = {
.stream_name = "CPU-Playback",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = FSL_RPMSG_FORMATS,
},
.capture = {
.stream_name = "CPU-Capture",
.channels_min = 2,
.channels_max = 2,
.rates = SNDRV_PCM_RATE_KNOT,
.formats = FSL_RPMSG_FORMATS,
},
.symmetric_rate = 1,
.symmetric_channels = 1,
.symmetric_sample_bits = 1,
.ops = &fsl_rpmsg_dai_ops,
};
static const struct snd_soc_component_driver fsl_component = {
.name = "fsl-rpmsg",
};
static const struct of_device_id fsl_rpmsg_ids[] = {
{ .compatible = "fsl,imx7ulp-rpmsg-audio"},
{ .compatible = "fsl,imx8mm-rpmsg-audio"},
{ .compatible = "fsl,imx8mn-rpmsg-audio"},
{ .compatible = "fsl,imx8mp-rpmsg-audio"},
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, fsl_rpmsg_ids);
static int fsl_rpmsg_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct fsl_rpmsg *rpmsg;
int ret;
rpmsg = devm_kzalloc(&pdev->dev, sizeof(struct fsl_rpmsg), GFP_KERNEL);
if (!rpmsg)
return -ENOMEM;
if (of_property_read_bool(np, "fsl,enable-lpa")) {
rpmsg->enable_lpa = 1;
rpmsg->buffer_size = LPA_LARGE_BUFFER_SIZE;
} else {
rpmsg->buffer_size = IMX_DEFAULT_DMABUF_SIZE;
}
/* Get the optional clocks */
rpmsg->ipg = devm_clk_get(&pdev->dev, "ipg");
if (IS_ERR(rpmsg->ipg))
rpmsg->ipg = NULL;
rpmsg->mclk = devm_clk_get(&pdev->dev, "mclk");
if (IS_ERR(rpmsg->mclk))
rpmsg->mclk = NULL;
rpmsg->dma = devm_clk_get(&pdev->dev, "dma");
if (IS_ERR(rpmsg->dma))
rpmsg->dma = NULL;
rpmsg->pll8k = devm_clk_get(&pdev->dev, "pll8k");
if (IS_ERR(rpmsg->pll8k))
rpmsg->pll8k = NULL;
rpmsg->pll11k = devm_clk_get(&pdev->dev, "pll11k");
if (IS_ERR(rpmsg->pll11k))
rpmsg->pll11k = NULL;
platform_set_drvdata(pdev, rpmsg);
pm_runtime_enable(&pdev->dev);
ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component,
&fsl_rpmsg_dai, 1);
if (ret)
return ret;
rpmsg->card_pdev = platform_device_register_data(&pdev->dev,
"imx-audio-rpmsg",
PLATFORM_DEVID_NONE,
NULL,
0);
if (IS_ERR(rpmsg->card_pdev)) {
dev_err(&pdev->dev, "failed to register rpmsg card\n");
ret = PTR_ERR(rpmsg->card_pdev);
return ret;
}
return 0;
}
static int fsl_rpmsg_remove(struct platform_device *pdev)
{
struct fsl_rpmsg *rpmsg = platform_get_drvdata(pdev);
if (rpmsg->card_pdev)
platform_device_unregister(rpmsg->card_pdev);
return 0;
}
#ifdef CONFIG_PM
static int fsl_rpmsg_runtime_resume(struct device *dev)
{
struct fsl_rpmsg *rpmsg = dev_get_drvdata(dev);
int ret;
ret = clk_prepare_enable(rpmsg->ipg);
if (ret) {
dev_err(dev, "failed to enable ipg clock: %d\n", ret);
goto ipg_err;
}
ret = clk_prepare_enable(rpmsg->dma);
if (ret) {
dev_err(dev, "Failed to enable dma clock %d\n", ret);
goto dma_err;
}
return 0;
dma_err:
clk_disable_unprepare(rpmsg->ipg);
ipg_err:
return ret;
}
static int fsl_rpmsg_runtime_suspend(struct device *dev)
{
struct fsl_rpmsg *rpmsg = dev_get_drvdata(dev);
clk_disable_unprepare(rpmsg->dma);
clk_disable_unprepare(rpmsg->ipg);
return 0;
}
#endif
static const struct dev_pm_ops fsl_rpmsg_pm_ops = {
SET_RUNTIME_PM_OPS(fsl_rpmsg_runtime_suspend,
fsl_rpmsg_runtime_resume,
NULL)
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
pm_runtime_force_resume)
};
static struct platform_driver fsl_rpmsg_driver = {
.probe = fsl_rpmsg_probe,
.remove = fsl_rpmsg_remove,
.driver = {
.name = "fsl_rpmsg",
.pm = &fsl_rpmsg_pm_ops,
.of_match_table = fsl_rpmsg_ids,
},
};
module_platform_driver(fsl_rpmsg_driver);
MODULE_DESCRIPTION("Freescale SoC Audio PRMSG CPU Interface");
MODULE_AUTHOR("Shengjiu Wang <shengjiu.wang@nxp.com>");
MODULE_ALIAS("platform:fsl_rpmsg");
MODULE_LICENSE("GPL");
/* SPDX-License-Identifier: GPL-2.0 */
/*
* Copyright 2017-2021 NXP
*/
#ifndef __FSL_RPMSG_H
#define __FSL_RPMSG_H
/*
* struct fsl_rpmsg - rpmsg private data
*
* @ipg: ipg clock for cpu dai (SAI)
* @mclk: master clock for cpu dai (SAI)
* @dma: clock for dma device
* @pll8k: parent clock for multiple of 8kHz frequency
* @pll11k: parent clock for multiple of 11kHz frequency
* @card_pdev: Platform_device pointer to register a sound card
* @mclk_streams: Active streams that are using baudclk
* @force_lpa: force enable low power audio routine if condition satisfy
* @enable_lpa: enable low power audio routine according to dts setting
* @buffer_size: pre allocated dma buffer size
*/
struct fsl_rpmsg {
struct clk *ipg;
struct clk *mclk;
struct clk *dma;
struct clk *pll8k;
struct clk *pll11k;
struct platform_device *card_pdev;
unsigned int mclk_streams;
int force_lpa;
int enable_lpa;
int buffer_size;
};
#endif /* __FSL_RPMSG_H */
// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017-2020 NXP
#include <linux/module.h>
#include <linux/rpmsg.h>
#include "imx-pcm-rpmsg.h"
/*
* struct imx_audio_rpmsg: private data
*
* @rpmsg_pdev: pointer of platform device
*/
struct imx_audio_rpmsg {
struct platform_device *rpmsg_pdev;
};
static int imx_audio_rpmsg_cb(struct rpmsg_device *rpdev, void *data, int len,
void *priv, u32 src)
{
struct imx_audio_rpmsg *rpmsg = dev_get_drvdata(&rpdev->dev);
struct rpmsg_r_msg *r_msg = (struct rpmsg_r_msg *)data;
struct rpmsg_info *info;
struct rpmsg_msg *msg;
unsigned long flags;
if (!rpmsg->rpmsg_pdev)
return 0;
info = platform_get_drvdata(rpmsg->rpmsg_pdev);
dev_dbg(&rpdev->dev, "get from%d: cmd:%d. %d\n",
src, r_msg->header.cmd, r_msg->param.resp);
switch (r_msg->header.type) {
case MSG_TYPE_C:
/* TYPE C is notification from M core */
switch (r_msg->header.cmd) {
case TX_PERIOD_DONE:
spin_lock_irqsave(&info->lock[TX], flags);
msg = &info->msg[TX_PERIOD_DONE + MSG_TYPE_A_NUM];
msg->r_msg.param.buffer_tail =
r_msg->param.buffer_tail;
msg->r_msg.param.buffer_tail %= info->num_period[TX];
spin_unlock_irqrestore(&info->lock[TX], flags);
info->callback[TX](info->callback_param[TX]);
break;
case RX_PERIOD_DONE:
spin_lock_irqsave(&info->lock[RX], flags);
msg = &info->msg[RX_PERIOD_DONE + MSG_TYPE_A_NUM];
msg->r_msg.param.buffer_tail =
r_msg->param.buffer_tail;
msg->r_msg.param.buffer_tail %= info->num_period[1];
spin_unlock_irqrestore(&info->lock[RX], flags);
info->callback[RX](info->callback_param[RX]);
break;
default:
dev_warn(&rpdev->dev, "unknown msg command\n");
break;
}
break;
case MSG_TYPE_B:
/* TYPE B is response msg */
memcpy(&info->r_msg, r_msg, sizeof(struct rpmsg_r_msg));
complete(&info->cmd_complete);
break;
default:
dev_warn(&rpdev->dev, "unknown msg type\n");
break;
}
return 0;
}
static int imx_audio_rpmsg_probe(struct rpmsg_device *rpdev)
{
struct imx_audio_rpmsg *data;
int ret = 0;
dev_info(&rpdev->dev, "new channel: 0x%x -> 0x%x!\n",
rpdev->src, rpdev->dst);
data = devm_kzalloc(&rpdev->dev, sizeof(*data), GFP_KERNEL);
if (!data)
return -ENOMEM;
dev_set_drvdata(&rpdev->dev, data);
/* Register platform driver for rpmsg routine */
data->rpmsg_pdev = platform_device_register_data(&rpdev->dev,
IMX_PCM_DRV_NAME,
PLATFORM_DEVID_NONE,
NULL, 0);
if (IS_ERR(data->rpmsg_pdev)) {
dev_err(&rpdev->dev, "failed to register rpmsg platform.\n");
ret = PTR_ERR(data->rpmsg_pdev);
}
return ret;
}
static void imx_audio_rpmsg_remove(struct rpmsg_device *rpdev)
{
struct imx_audio_rpmsg *data = dev_get_drvdata(&rpdev->dev);
if (data->rpmsg_pdev)
platform_device_unregister(data->rpmsg_pdev);
dev_info(&rpdev->dev, "audio rpmsg driver is removed\n");
}
static struct rpmsg_device_id imx_audio_rpmsg_id_table[] = {
{ .name = "rpmsg-audio-channel" },
{ },
};
static struct rpmsg_driver imx_audio_rpmsg_driver = {
.drv.name = "imx_audio_rpmsg",
.drv.owner = THIS_MODULE,
.id_table = imx_audio_rpmsg_id_table,
.probe = imx_audio_rpmsg_probe,
.callback = imx_audio_rpmsg_cb,
.remove = imx_audio_rpmsg_remove,
};
static int __init imx_audio_rpmsg_init(void)
{
return register_rpmsg_driver(&imx_audio_rpmsg_driver);
}
static void __exit imx_audio_rpmsg_exit(void)
{
unregister_rpmsg_driver(&imx_audio_rpmsg_driver);
}
module_init(imx_audio_rpmsg_init);
module_exit(imx_audio_rpmsg_exit);
MODULE_DESCRIPTION("Freescale SoC Audio RPMSG interface");
MODULE_AUTHOR("Shengjiu Wang <shengjiu.wang@nxp.com>");
MODULE_ALIAS("platform:imx_audio_rpmsg");
MODULE_LICENSE("GPL v2");
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// SPDX-License-Identifier: GPL-2.0+
// Copyright 2017-2020 NXP
#include <linux/module.h>
#include <linux/of_platform.h>
#include <linux/of_reserved_mem.h>
#include <linux/i2c.h>
#include <linux/of_gpio.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/clk.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <sound/control.h>
#include <sound/pcm_params.h>
#include <sound/soc-dapm.h>
#include "imx-pcm-rpmsg.h"
struct imx_rpmsg {
struct snd_soc_dai_link dai;
struct snd_soc_card card;
};
static const struct snd_soc_dapm_widget imx_rpmsg_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_SPK("Ext Spk", NULL),
SND_SOC_DAPM_MIC("Mic Jack", NULL),
SND_SOC_DAPM_MIC("Main MIC", NULL),
};
static int imx_rpmsg_probe(struct platform_device *pdev)
{
struct snd_soc_dai_link_component *dlc;
struct device *dev = pdev->dev.parent;
/* rpmsg_pdev is the platform device for the rpmsg node that probed us */
struct platform_device *rpmsg_pdev = to_platform_device(dev);
struct device_node *np = rpmsg_pdev->dev.of_node;
struct of_phandle_args args;
struct imx_rpmsg *data;
int ret = 0;
dlc = devm_kzalloc(&pdev->dev, 3 * sizeof(*dlc), GFP_KERNEL);
if (!dlc)
return -ENOMEM;
data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
ret = -ENOMEM;
goto fail;
}
ret = of_reserved_mem_device_init_by_idx(&pdev->dev, np, 0);
if (ret)
dev_warn(&pdev->dev, "no reserved DMA memory\n");
data->dai.cpus = &dlc[0];
data->dai.num_cpus = 1;
data->dai.platforms = &dlc[1];
data->dai.num_platforms = 1;
data->dai.codecs = &dlc[2];
data->dai.num_codecs = 1;
data->dai.name = "rpmsg hifi";
data->dai.stream_name = "rpmsg hifi";
data->dai.dai_fmt = SND_SOC_DAIFMT_I2S |
SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBS_CFS;
/* Optional codec node */
ret = of_parse_phandle_with_fixed_args(np, "audio-codec", 0, 0, &args);
if (ret) {
data->dai.codecs->dai_name = "snd-soc-dummy-dai";
data->dai.codecs->name = "snd-soc-dummy";
} else {
data->dai.codecs->of_node = args.np;
ret = snd_soc_get_dai_name(&args, &data->dai.codecs->dai_name);
if (ret) {
dev_err(&pdev->dev, "Unable to get codec_dai_name\n");
goto fail;
}
}
data->dai.cpus->dai_name = dev_name(&rpmsg_pdev->dev);
data->dai.platforms->name = IMX_PCM_DRV_NAME;
data->dai.playback_only = true;
data->dai.capture_only = true;
data->card.num_links = 1;
data->card.dai_link = &data->dai;
if (of_property_read_bool(np, "fsl,rpmsg-out"))
data->dai.capture_only = false;
if (of_property_read_bool(np, "fsl,rpmsg-in"))
data->dai.playback_only = false;
if (data->dai.playback_only && data->dai.capture_only) {
dev_err(&pdev->dev, "no enabled rpmsg DAI link\n");
ret = -EINVAL;
goto fail;
}
data->card.dev = &pdev->dev;
data->card.owner = THIS_MODULE;
data->card.dapm_widgets = imx_rpmsg_dapm_widgets;
data->card.num_dapm_widgets = ARRAY_SIZE(imx_rpmsg_dapm_widgets);
/*
* Inoder to use common api to get card name and audio routing.
* Use parent of_node for this device, revert it after finishing using
*/
data->card.dev->of_node = np;
ret = snd_soc_of_parse_card_name(&data->card, "model");
if (ret)
goto fail;
if (of_property_read_bool(np, "audio-routing")) {
ret = snd_soc_of_parse_audio_routing(&data->card, "audio-routing");
if (ret) {
dev_err(&pdev->dev, "failed to parse audio-routing: %d\n", ret);
goto fail;
}
}
platform_set_drvdata(pdev, &data->card);
snd_soc_card_set_drvdata(&data->card, data);
ret = devm_snd_soc_register_card(&pdev->dev, &data->card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card failed (%d)\n", ret);
goto fail;
}
fail:
pdev->dev.of_node = NULL;
return ret;
}
static struct platform_driver imx_rpmsg_driver = {
.driver = {
.name = "imx-audio-rpmsg",
.owner = THIS_MODULE,
.pm = &snd_soc_pm_ops,
},
.probe = imx_rpmsg_probe,
};
module_platform_driver(imx_rpmsg_driver);
MODULE_DESCRIPTION("Freescale SoC Audio RPMSG Machine Driver");
MODULE_AUTHOR("Shengjiu Wang <shengjiu.wang@nxp.com>");
MODULE_ALIAS("platform:imx-audio-rpmsg");
MODULE_LICENSE("GPL v2");
...@@ -1212,3 +1212,17 @@ void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd, ...@@ -1212,3 +1212,17 @@ void snd_soc_pcm_component_pm_runtime_put(struct snd_soc_pcm_runtime *rtd,
soc_component_mark_pop(component, stream, pm); soc_component_mark_pop(component, stream, pm);
} }
} }
int snd_soc_pcm_component_ack(struct snd_pcm_substream *substream)
{
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
struct snd_soc_component *component;
int i;
/* FIXME: use 1st pointer */
for_each_rtd_components(rtd, i, component)
if (component->driver->ack)
return component->driver->ack(component, substream);
return 0;
}
...@@ -2772,6 +2772,8 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num) ...@@ -2772,6 +2772,8 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
rtd->ops.page = snd_soc_pcm_component_page; rtd->ops.page = snd_soc_pcm_component_page;
if (drv->mmap) if (drv->mmap)
rtd->ops.mmap = snd_soc_pcm_component_mmap; rtd->ops.mmap = snd_soc_pcm_component_mmap;
if (drv->ack)
rtd->ops.ack = snd_soc_pcm_component_ack;
} }
if (playback) if (playback)
......
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