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path: root/sound/soc/au1x/psc-i2s.c
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Diffstat (limited to 'sound/soc/au1x/psc-i2s.c')
-rw-r--r--sound/soc/au1x/psc-i2s.c166
1 files changed, 68 insertions, 98 deletions
diff --git a/sound/soc/au1x/psc-i2s.c b/sound/soc/au1x/psc-i2s.c
index fe923a7bdc39..bf59105fcb7a 100644
--- a/sound/soc/au1x/psc-i2s.c
+++ b/sound/soc/au1x/psc-i2s.c
@@ -1,13 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* Au12x0/Au1550 PSC ALSA ASoC audio support.
*
* (c) 2007-2008 MSC Vertriebsges.m.b.H.,
* Manuel Lauss <manuel.lauss@gmail.com>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
* Au1xxx-PSC I2S glue.
*
* NOTE: so far only PSC slave mode (bit- and frameclock) is supported.
@@ -93,12 +90,12 @@ static int au1xpsc_i2s_set_fmt(struct snd_soc_dai *cpu_dai,
goto out;
}
- switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
- case SND_SOC_DAIFMT_CBM_CFM: /* CODEC master */
- ct |= PSC_I2SCFG_MS; /* PSC I2S slave mode */
+ switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) {
+ case SND_SOC_DAIFMT_BC_FC: /* CODEC provider */
+ ct |= PSC_I2SCFG_MS; /* PSC I2S consumer mode */
break;
- case SND_SOC_DAIFMT_CBS_CFS: /* CODEC slave */
- ct &= ~PSC_I2SCFG_MS; /* PSC I2S Master mode */
+ case SND_SOC_DAIFMT_BP_FP: /* CODEC consumer */
+ ct &= ~PSC_I2SCFG_MS; /* PSC I2S provider mode */
break;
default:
goto out;
@@ -120,10 +117,10 @@ static int au1xpsc_i2s_hw_params(struct snd_pcm_substream *substream,
unsigned long stat;
/* check if the PSC is already streaming data */
- stat = au_readl(I2S_STAT(pscdata));
+ stat = __raw_readl(I2S_STAT(pscdata));
if (stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB)) {
/* reject parameters not currently set up in hardware */
- cfgbits = au_readl(I2S_CFG(pscdata));
+ cfgbits = __raw_readl(I2S_CFG(pscdata));
if ((PSC_I2SCFG_GET_LEN(cfgbits) != params->msbits) ||
(params_rate(params) != pscdata->rate))
return -EINVAL;
@@ -149,33 +146,33 @@ static int au1xpsc_i2s_configure(struct au1xpsc_audio_data *pscdata)
unsigned long tmo;
/* bring PSC out of sleep, and configure I2S unit */
- au_writel(PSC_CTRL_ENABLE, PSC_CTRL(pscdata));
- au_sync();
+ __raw_writel(PSC_CTRL_ENABLE, PSC_CTRL(pscdata));
+ wmb(); /* drain writebuffer */
tmo = 1000000;
- while (!(au_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_SR) && tmo)
+ while (!(__raw_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_SR) && tmo)
tmo--;
if (!tmo)
goto psc_err;
- au_writel(0, I2S_CFG(pscdata));
- au_sync();
- au_writel(pscdata->cfg | PSC_I2SCFG_DE_ENABLE, I2S_CFG(pscdata));
- au_sync();
+ __raw_writel(0, I2S_CFG(pscdata));
+ wmb(); /* drain writebuffer */
+ __raw_writel(pscdata->cfg | PSC_I2SCFG_DE_ENABLE, I2S_CFG(pscdata));
+ wmb(); /* drain writebuffer */
/* wait for I2S controller to become ready */
tmo = 1000000;
- while (!(au_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_DR) && tmo)
+ while (!(__raw_readl(I2S_STAT(pscdata)) & PSC_I2SSTAT_DR) && tmo)
tmo--;
if (tmo)
return 0;
psc_err:
- au_writel(0, I2S_CFG(pscdata));
- au_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata));
- au_sync();
+ __raw_writel(0, I2S_CFG(pscdata));
+ __raw_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata));
+ wmb(); /* drain writebuffer */
return -ETIMEDOUT;
}
@@ -187,26 +184,26 @@ static int au1xpsc_i2s_start(struct au1xpsc_audio_data *pscdata, int stype)
ret = 0;
/* if both TX and RX are idle, configure the PSC */
- stat = au_readl(I2S_STAT(pscdata));
+ stat = __raw_readl(I2S_STAT(pscdata));
if (!(stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB))) {
ret = au1xpsc_i2s_configure(pscdata);
if (ret)
goto out;
}
- au_writel(I2SPCR_CLRFIFO(stype), I2S_PCR(pscdata));
- au_sync();
- au_writel(I2SPCR_START(stype), I2S_PCR(pscdata));
- au_sync();
+ __raw_writel(I2SPCR_CLRFIFO(stype), I2S_PCR(pscdata));
+ wmb(); /* drain writebuffer */
+ __raw_writel(I2SPCR_START(stype), I2S_PCR(pscdata));
+ wmb(); /* drain writebuffer */
/* wait for start confirmation */
tmo = 1000000;
- while (!(au_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo)
+ while (!(__raw_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo)
tmo--;
if (!tmo) {
- au_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata));
- au_sync();
+ __raw_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata));
+ wmb(); /* drain writebuffer */
ret = -ETIMEDOUT;
}
out:
@@ -217,21 +214,21 @@ static int au1xpsc_i2s_stop(struct au1xpsc_audio_data *pscdata, int stype)
{
unsigned long tmo, stat;
- au_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata));
- au_sync();
+ __raw_writel(I2SPCR_STOP(stype), I2S_PCR(pscdata));
+ wmb(); /* drain writebuffer */
/* wait for stop confirmation */
tmo = 1000000;
- while ((au_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo)
+ while ((__raw_readl(I2S_STAT(pscdata)) & I2SSTAT_BUSY(stype)) && tmo)
tmo--;
/* if both TX and RX are idle, disable PSC */
- stat = au_readl(I2S_STAT(pscdata));
+ stat = __raw_readl(I2S_STAT(pscdata));
if (!(stat & (PSC_I2SSTAT_TB | PSC_I2SSTAT_RB))) {
- au_writel(0, I2S_CFG(pscdata));
- au_sync();
- au_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata));
- au_sync();
+ __raw_writel(0, I2S_CFG(pscdata));
+ wmb(); /* drain writebuffer */
+ __raw_writel(PSC_CTRL_SUSPEND, PSC_CTRL(pscdata));
+ wmb(); /* drain writebuffer */
}
return 0;
}
@@ -289,14 +286,14 @@ static const struct snd_soc_dai_driver au1xpsc_i2s_dai_template = {
};
static const struct snd_soc_component_driver au1xpsc_i2s_component = {
- .name = "au1xpsc-i2s",
+ .name = "au1xpsc-i2s",
+ .legacy_dai_naming = 1,
};
static int au1xpsc_i2s_drvprobe(struct platform_device *pdev)
{
- struct resource *iores, *dmares;
+ struct resource *dmares;
unsigned long sel;
- int ret;
struct au1xpsc_audio_data *wd;
wd = devm_kzalloc(&pdev->dev, sizeof(struct au1xpsc_audio_data),
@@ -304,20 +301,9 @@ static int au1xpsc_i2s_drvprobe(struct platform_device *pdev)
if (!wd)
return -ENOMEM;
- iores = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!iores)
- return -ENODEV;
-
- ret = -EBUSY;
- if (!devm_request_mem_region(&pdev->dev, iores->start,
- resource_size(iores),
- pdev->name))
- return -EBUSY;
-
- wd->mmio = devm_ioremap(&pdev->dev, iores->start,
- resource_size(iores));
- if (!wd->mmio)
- return -EBUSY;
+ wd->mmio = devm_platform_ioremap_resource(pdev, 0);
+ if (IS_ERR(wd->mmio))
+ return PTR_ERR(wd->mmio);
dmares = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!dmares)
@@ -332,12 +318,12 @@ static int au1xpsc_i2s_drvprobe(struct platform_device *pdev)
/* preserve PSC clock source set up by platform (dev.platform_data
* is already occupied by soc layer)
*/
- sel = au_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK;
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
- au_sync();
- au_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(wd));
- au_writel(0, I2S_CFG(wd));
- au_sync();
+ sel = __raw_readl(PSC_SEL(wd)) & PSC_SEL_CLK_MASK;
+ __raw_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
+ wmb(); /* drain writebuffer */
+ __raw_writel(PSC_SEL_PS_I2SMODE | sel, PSC_SEL(wd));
+ __raw_writel(0, I2S_CFG(wd));
+ wmb(); /* drain writebuffer */
/* preconfigure: set max rx/tx fifo depths */
wd->cfg |= PSC_I2SCFG_RT_FIFO8 | PSC_I2SCFG_TT_FIFO8;
@@ -354,36 +340,31 @@ static int au1xpsc_i2s_drvprobe(struct platform_device *pdev)
platform_set_drvdata(pdev, wd);
- return snd_soc_register_component(&pdev->dev, &au1xpsc_i2s_component,
- &wd->dai_drv, 1);
+ return devm_snd_soc_register_component(&pdev->dev,
+ &au1xpsc_i2s_component, &wd->dai_drv, 1);
}
-static int au1xpsc_i2s_drvremove(struct platform_device *pdev)
+static void au1xpsc_i2s_drvremove(struct platform_device *pdev)
{
struct au1xpsc_audio_data *wd = platform_get_drvdata(pdev);
- snd_soc_unregister_component(&pdev->dev);
-
- au_writel(0, I2S_CFG(wd));
- au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
- au_sync();
-
- return 0;
+ __raw_writel(0, I2S_CFG(wd));
+ wmb(); /* drain writebuffer */
+ __raw_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
+ wmb(); /* drain writebuffer */
}
-#ifdef CONFIG_PM
static int au1xpsc_i2s_drvsuspend(struct device *dev)
{
struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
/* save interesting register and disable PSC */
- wd->pm[0] = au_readl(PSC_SEL(wd));
+ wd->pm[0] = __raw_readl(PSC_SEL(wd));
- au_writel(0, I2S_CFG(wd));
- au_sync();
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
- au_sync();
+ __raw_writel(0, I2S_CFG(wd));
+ wmb(); /* drain writebuffer */
+ __raw_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
+ wmb(); /* drain writebuffer */
return 0;
}
@@ -393,34 +374,23 @@ static int au1xpsc_i2s_drvresume(struct device *dev)
struct au1xpsc_audio_data *wd = dev_get_drvdata(dev);
/* select I2S mode and PSC clock */
- au_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
- au_sync();
- au_writel(0, PSC_SEL(wd));
- au_sync();
- au_writel(wd->pm[0], PSC_SEL(wd));
- au_sync();
+ __raw_writel(PSC_CTRL_DISABLE, PSC_CTRL(wd));
+ wmb(); /* drain writebuffer */
+ __raw_writel(0, PSC_SEL(wd));
+ wmb(); /* drain writebuffer */
+ __raw_writel(wd->pm[0], PSC_SEL(wd));
+ wmb(); /* drain writebuffer */
return 0;
}
-static struct dev_pm_ops au1xpsci2s_pmops = {
- .suspend = au1xpsc_i2s_drvsuspend,
- .resume = au1xpsc_i2s_drvresume,
-};
-
-#define AU1XPSCI2S_PMOPS &au1xpsci2s_pmops
-
-#else
-
-#define AU1XPSCI2S_PMOPS NULL
-
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(au1xpsci2s_pmops, au1xpsc_i2s_drvsuspend,
+ au1xpsc_i2s_drvresume);
static struct platform_driver au1xpsc_i2s_driver = {
.driver = {
.name = "au1xpsc_i2s",
- .owner = THIS_MODULE,
- .pm = AU1XPSCI2S_PMOPS,
+ .pm = pm_ptr(&au1xpsci2s_pmops),
},
.probe = au1xpsc_i2s_drvprobe,
.remove = au1xpsc_i2s_drvremove,
generated by cgit (git 2.34.1) at 2025-12-25 17:34:51 +0000