forked from Minki/linux
7b15376051
When CONFIG_PM is disabled, we get a warning for unused functions:
sound/soc/fsl/fsl_aud2htx.c:261:12: error: unused function 'fsl_aud2htx_runtime_suspend' [-Werror,-Wunused-function]
static int fsl_aud2htx_runtime_suspend(struct device *dev)
sound/soc/fsl/fsl_aud2htx.c:271:12: error: unused function 'fsl_aud2htx_runtime_resume' [-Werror,-Wunused-function]
static int fsl_aud2htx_runtime_resume(struct device *dev)
Mark these as __maybe_unused to avoid the warning without adding
an #ifdef.
Fixes: 8a24c834c0 ("ASoC: fsl_aud2htx: Add aud2htx module driver")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Link: https://lore.kernel.org/r/20201203222900.1042578-1-arnd@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
309 lines
7.5 KiB
C
309 lines
7.5 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
// Copyright 2020 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/regmap.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/time.h>
|
|
#include <linux/pm_qos.h>
|
|
#include <sound/core.h>
|
|
#include <sound/dmaengine_pcm.h>
|
|
#include <sound/pcm_params.h>
|
|
#include <linux/dma-mapping.h>
|
|
|
|
#include "fsl_aud2htx.h"
|
|
#include "imx-pcm.h"
|
|
|
|
static int fsl_aud2htx_trigger(struct snd_pcm_substream *substream, int cmd,
|
|
struct snd_soc_dai *dai)
|
|
{
|
|
struct fsl_aud2htx *aud2htx = snd_soc_dai_get_drvdata(dai);
|
|
|
|
switch (cmd) {
|
|
case SNDRV_PCM_TRIGGER_START:
|
|
case SNDRV_PCM_TRIGGER_RESUME:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL,
|
|
AUD2HTX_CTRL_EN, AUD2HTX_CTRL_EN);
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL_EXT,
|
|
AUD2HTX_CTRE_DE, AUD2HTX_CTRE_DE);
|
|
break;
|
|
case SNDRV_PCM_TRIGGER_SUSPEND:
|
|
case SNDRV_PCM_TRIGGER_STOP:
|
|
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL_EXT,
|
|
AUD2HTX_CTRE_DE, 0);
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL,
|
|
AUD2HTX_CTRL_EN, 0);
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static const struct snd_soc_dai_ops fsl_aud2htx_dai_ops = {
|
|
.trigger = fsl_aud2htx_trigger,
|
|
};
|
|
|
|
static int fsl_aud2htx_dai_probe(struct snd_soc_dai *cpu_dai)
|
|
{
|
|
struct fsl_aud2htx *aud2htx = dev_get_drvdata(cpu_dai->dev);
|
|
|
|
/* DMA request when number of entries < WTMK_LOW */
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL_EXT,
|
|
AUD2HTX_CTRE_DT_MASK, 0);
|
|
|
|
/* Disable interrupts*/
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_IRQ_MASK,
|
|
AUD2HTX_WM_HIGH_IRQ_MASK |
|
|
AUD2HTX_WM_LOW_IRQ_MASK |
|
|
AUD2HTX_OVF_MASK,
|
|
AUD2HTX_WM_HIGH_IRQ_MASK |
|
|
AUD2HTX_WM_LOW_IRQ_MASK |
|
|
AUD2HTX_OVF_MASK);
|
|
|
|
/* Configure watermark */
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL_EXT,
|
|
AUD2HTX_CTRE_WL_MASK,
|
|
AUD2HTX_WTMK_LOW << AUD2HTX_CTRE_WL_SHIFT);
|
|
regmap_update_bits(aud2htx->regmap, AUD2HTX_CTRL_EXT,
|
|
AUD2HTX_CTRE_WH_MASK,
|
|
AUD2HTX_WTMK_HIGH << AUD2HTX_CTRE_WH_SHIFT);
|
|
|
|
snd_soc_dai_init_dma_data(cpu_dai, &aud2htx->dma_params_tx,
|
|
&aud2htx->dma_params_rx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct snd_soc_dai_driver fsl_aud2htx_dai = {
|
|
.probe = fsl_aud2htx_dai_probe,
|
|
.playback = {
|
|
.stream_name = "CPU-Playback",
|
|
.channels_min = 1,
|
|
.channels_max = 8,
|
|
.rates = SNDRV_PCM_RATE_32000 |
|
|
SNDRV_PCM_RATE_44100 |
|
|
SNDRV_PCM_RATE_48000 |
|
|
SNDRV_PCM_RATE_88200 |
|
|
SNDRV_PCM_RATE_96000 |
|
|
SNDRV_PCM_RATE_176400 |
|
|
SNDRV_PCM_RATE_192000,
|
|
.formats = FSL_AUD2HTX_FORMATS,
|
|
},
|
|
.ops = &fsl_aud2htx_dai_ops,
|
|
};
|
|
|
|
static const struct snd_soc_component_driver fsl_aud2htx_component = {
|
|
.name = "fsl-aud2htx",
|
|
};
|
|
|
|
static const struct reg_default fsl_aud2htx_reg_defaults[] = {
|
|
{AUD2HTX_CTRL, 0x00000000},
|
|
{AUD2HTX_CTRL_EXT, 0x00000000},
|
|
{AUD2HTX_WR, 0x00000000},
|
|
{AUD2HTX_STATUS, 0x00000000},
|
|
{AUD2HTX_IRQ_NOMASK, 0x00000000},
|
|
{AUD2HTX_IRQ_MASKED, 0x00000000},
|
|
{AUD2HTX_IRQ_MASK, 0x00000000},
|
|
};
|
|
|
|
static bool fsl_aud2htx_readable_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case AUD2HTX_CTRL:
|
|
case AUD2HTX_CTRL_EXT:
|
|
case AUD2HTX_STATUS:
|
|
case AUD2HTX_IRQ_NOMASK:
|
|
case AUD2HTX_IRQ_MASKED:
|
|
case AUD2HTX_IRQ_MASK:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool fsl_aud2htx_writeable_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case AUD2HTX_CTRL:
|
|
case AUD2HTX_CTRL_EXT:
|
|
case AUD2HTX_WR:
|
|
case AUD2HTX_IRQ_NOMASK:
|
|
case AUD2HTX_IRQ_MASKED:
|
|
case AUD2HTX_IRQ_MASK:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static bool fsl_aud2htx_volatile_reg(struct device *dev, unsigned int reg)
|
|
{
|
|
switch (reg) {
|
|
case AUD2HTX_STATUS:
|
|
case AUD2HTX_IRQ_NOMASK:
|
|
case AUD2HTX_IRQ_MASKED:
|
|
return true;
|
|
default:
|
|
return false;
|
|
}
|
|
}
|
|
|
|
static const struct regmap_config fsl_aud2htx_regmap_config = {
|
|
.reg_bits = 32,
|
|
.reg_stride = 4,
|
|
.val_bits = 32,
|
|
|
|
.max_register = AUD2HTX_IRQ_MASK,
|
|
.reg_defaults = fsl_aud2htx_reg_defaults,
|
|
.num_reg_defaults = ARRAY_SIZE(fsl_aud2htx_reg_defaults),
|
|
.readable_reg = fsl_aud2htx_readable_reg,
|
|
.volatile_reg = fsl_aud2htx_volatile_reg,
|
|
.writeable_reg = fsl_aud2htx_writeable_reg,
|
|
.cache_type = REGCACHE_RBTREE,
|
|
};
|
|
|
|
static const struct of_device_id fsl_aud2htx_dt_ids[] = {
|
|
{ .compatible = "fsl,imx8mp-aud2htx",},
|
|
{}
|
|
};
|
|
MODULE_DEVICE_TABLE(of, fsl_aud2htx_dt_ids);
|
|
|
|
static irqreturn_t fsl_aud2htx_isr(int irq, void *dev_id)
|
|
{
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static int fsl_aud2htx_probe(struct platform_device *pdev)
|
|
{
|
|
struct fsl_aud2htx *aud2htx;
|
|
struct resource *res;
|
|
void __iomem *regs;
|
|
int ret, irq;
|
|
|
|
aud2htx = devm_kzalloc(&pdev->dev, sizeof(*aud2htx), GFP_KERNEL);
|
|
if (!aud2htx)
|
|
return -ENOMEM;
|
|
|
|
aud2htx->pdev = pdev;
|
|
|
|
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
|
regs = devm_ioremap_resource(&pdev->dev, res);
|
|
if (IS_ERR(regs)) {
|
|
dev_err(&pdev->dev, "failed ioremap\n");
|
|
return PTR_ERR(regs);
|
|
}
|
|
|
|
aud2htx->regmap = devm_regmap_init_mmio(&pdev->dev, regs,
|
|
&fsl_aud2htx_regmap_config);
|
|
if (IS_ERR(aud2htx->regmap)) {
|
|
dev_err(&pdev->dev, "failed to init regmap");
|
|
return PTR_ERR(aud2htx->regmap);
|
|
}
|
|
|
|
irq = platform_get_irq(pdev, 0);
|
|
if (irq < 0)
|
|
return irq;
|
|
|
|
ret = devm_request_irq(&pdev->dev, irq, fsl_aud2htx_isr, 0,
|
|
dev_name(&pdev->dev), aud2htx);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to claim irq %u: %d\n", irq, ret);
|
|
return ret;
|
|
}
|
|
|
|
aud2htx->bus_clk = devm_clk_get(&pdev->dev, "bus");
|
|
if (IS_ERR(aud2htx->bus_clk)) {
|
|
dev_err(&pdev->dev, "failed to get mem clock\n");
|
|
return PTR_ERR(aud2htx->bus_clk);
|
|
}
|
|
|
|
aud2htx->dma_params_tx.chan_name = "tx";
|
|
aud2htx->dma_params_tx.maxburst = AUD2HTX_MAXBURST;
|
|
aud2htx->dma_params_tx.addr = res->start + AUD2HTX_WR;
|
|
|
|
platform_set_drvdata(pdev, aud2htx);
|
|
pm_runtime_enable(&pdev->dev);
|
|
|
|
regcache_cache_only(aud2htx->regmap, true);
|
|
|
|
ret = devm_snd_soc_register_component(&pdev->dev,
|
|
&fsl_aud2htx_component,
|
|
&fsl_aud2htx_dai, 1);
|
|
if (ret) {
|
|
dev_err(&pdev->dev, "failed to register ASoC DAI\n");
|
|
return ret;
|
|
}
|
|
|
|
ret = imx_pcm_dma_init(pdev, IMX_DEFAULT_DMABUF_SIZE);
|
|
if (ret)
|
|
dev_err(&pdev->dev, "failed to init imx pcm dma: %d\n", ret);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int fsl_aud2htx_remove(struct platform_device *pdev)
|
|
{
|
|
pm_runtime_disable(&pdev->dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused fsl_aud2htx_runtime_suspend(struct device *dev)
|
|
{
|
|
struct fsl_aud2htx *aud2htx = dev_get_drvdata(dev);
|
|
|
|
regcache_cache_only(aud2htx->regmap, true);
|
|
clk_disable_unprepare(aud2htx->bus_clk);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __maybe_unused fsl_aud2htx_runtime_resume(struct device *dev)
|
|
{
|
|
struct fsl_aud2htx *aud2htx = dev_get_drvdata(dev);
|
|
int ret;
|
|
|
|
ret = clk_prepare_enable(aud2htx->bus_clk);
|
|
if (ret)
|
|
return ret;
|
|
|
|
regcache_cache_only(aud2htx->regmap, false);
|
|
regcache_mark_dirty(aud2htx->regmap);
|
|
regcache_sync(aud2htx->regmap);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct dev_pm_ops fsl_aud2htx_pm_ops = {
|
|
SET_RUNTIME_PM_OPS(fsl_aud2htx_runtime_suspend,
|
|
fsl_aud2htx_runtime_resume,
|
|
NULL)
|
|
SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
|
|
pm_runtime_force_resume)
|
|
};
|
|
|
|
static struct platform_driver fsl_aud2htx_driver = {
|
|
.probe = fsl_aud2htx_probe,
|
|
.remove = fsl_aud2htx_remove,
|
|
.driver = {
|
|
.name = "fsl-aud2htx",
|
|
.pm = &fsl_aud2htx_pm_ops,
|
|
.of_match_table = fsl_aud2htx_dt_ids,
|
|
},
|
|
};
|
|
module_platform_driver(fsl_aud2htx_driver);
|
|
|
|
MODULE_AUTHOR("Shengjiu Wang <Shengjiu.Wang@nxp.com>");
|
|
MODULE_DESCRIPTION("NXP AUD2HTX driver");
|
|
MODULE_LICENSE("GPL v2");
|