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ASoC: fsl_mqs: Support accessing registers by scmi interface

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On i.MX95, the MQS module in Always-on (AON) domain only can
be accessed by System Controller Management Interface (SCMI)
MISC Protocol. So define a specific regmap_config for the case.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20241025062935.1071408-1-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Shengjiu Wang 2024-10-25 14:29:35 +08:00 committed by Mark Brown
parent 28f7aa0c01
commit 101c902359
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GPG Key ID: 24D68B725D5487D0
2 changed files with 42 additions and 0 deletions
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1
sound/soc/fsl/Kconfig
View File

@ -30,6 +30,7 @@ config SND_SOC_FSL_MQS
tristate "Medium Quality Sound (MQS) module support"
depends on SND_SOC_FSL_SAI
select REGMAP_MMIO
select IMX_SCMI_MISC_DRV if IMX_SCMI_MISC_EXT !=n
help
Say Y if you want to add Medium Quality Sound (MQS)
support for the Freescale CPUs.

41
sound/soc/fsl/fsl_mqs.c
View File

@ -6,6 +6,7 @@
// Copyright 2019 NXP
#include <linux/clk.h>
#include <linux/firmware/imx/sm.h>
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/mfd/syscon.h>
@ -74,6 +75,29 @@ struct fsl_mqs {
#define FSL_MQS_RATES (SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000)
#define FSL_MQS_FORMATS SNDRV_PCM_FMTBIT_S16_LE
static int fsl_mqs_sm_read(void *context, unsigned int reg, unsigned int *val)
{
struct fsl_mqs *mqs_priv = context;
int num = 1;
if (IS_ENABLED(CONFIG_IMX_SCMI_MISC_DRV) &&
mqs_priv->soc->ctrl_off == reg)
return scmi_imx_misc_ctrl_get(SCMI_IMX_CTRL_MQS1_SETTINGS, &num, val);
return -EINVAL;
};
static int fsl_mqs_sm_write(void *context, unsigned int reg, unsigned int val)
{
struct fsl_mqs *mqs_priv = context;
if (IS_ENABLED(CONFIG_IMX_SCMI_MISC_DRV) &&
mqs_priv->soc->ctrl_off == reg)
return scmi_imx_misc_ctrl_set(SCMI_IMX_CTRL_MQS1_SETTINGS, val);
return -EINVAL;
};
static int fsl_mqs_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params,
struct snd_soc_dai *dai)
@ -188,6 +212,13 @@ static const struct regmap_config fsl_mqs_regmap_config = {
.cache_type = REGCACHE_NONE,
};
static const struct regmap_config fsl_mqs_sm_regmap = {
.reg_bits = 32,
.val_bits = 32,
.reg_read = fsl_mqs_sm_read,
.reg_write = fsl_mqs_sm_write,
};
static int fsl_mqs_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@ -219,6 +250,16 @@ static int fsl_mqs_probe(struct platform_device *pdev)
dev_err(&pdev->dev, "failed to get gpr regmap\n");
return PTR_ERR(mqs_priv->regmap);
}
} else if (mqs_priv->soc->type == TYPE_REG_SM) {
mqs_priv->regmap = devm_regmap_init(&pdev->dev,
NULL,
mqs_priv,
&fsl_mqs_sm_regmap);
if (IS_ERR(mqs_priv->regmap)) {
dev_err(&pdev->dev, "failed to init regmap: %ld\n",
PTR_ERR(mqs_priv->regmap));
return PTR_ERR(mqs_priv->regmap);
}
} else {
regs = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(regs))