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Message-Id: <20230727031459.571559-3-chancel.liu@nxp.com>
Date: Thu, 27 Jul 2023 11:14:58 +0800
From: Chancel Liu <chancel.liu@....com>
To: shengjiu.wang@...il.com, Xiubo.Lee@...il.com, festevam@...il.com,
nicoleotsuka@...il.com, lgirdwood@...il.com, broonie@...nel.org,
perex@...ex.cz, tiwai@...e.com, alsa-devel@...a-project.org,
linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org
Cc: Chancel Liu <chancel.liu@....com>
Subject: [PATCH 2/3] ASoC: fsl_micfil: Add fsl_micfil_check_version function
fsl_micfil_check_version can help to parse the version info in VERID
and PARAM registers. Since the two registers are added only on i.MX93
platform, a member flag called check_version is introduced to soc data
structure which indicates need to check version.
Signed-off-by: Chancel Liu <chancel.liu@....com>
---
sound/soc/fsl/fsl_micfil.c | 76 +++++++++++++++++++++++++++++++++++++-
sound/soc/fsl/fsl_micfil.h | 36 ++++++++++++++++++
2 files changed, 110 insertions(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
index b15febf19c02..46eda6e8c4b6 100644
--- a/sound/soc/fsl/fsl_micfil.c
+++ b/sound/soc/fsl/fsl_micfil.c
@@ -56,6 +56,8 @@ struct fsl_micfil {
int vad_init_mode;
int vad_enabled;
int vad_detected;
+ struct fsl_micfil_verid verid;
+ struct fsl_micfil_param param;
};
struct fsl_micfil_soc_data {
@@ -64,6 +66,7 @@ struct fsl_micfil_soc_data {
unsigned int dataline;
bool imx;
bool use_edma;
+ bool check_version;
u64 formats;
};
@@ -90,6 +93,7 @@ static struct fsl_micfil_soc_data fsl_micfil_imx93 = {
.dataline = 0xf,
.formats = SNDRV_PCM_FMTBIT_S32_LE,
.use_edma = true,
+ .check_version = true,
};
static const struct of_device_id fsl_micfil_dt_ids[] = {
@@ -356,6 +360,49 @@ static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
SOC_SINGLE_BOOL_EXT("VAD Detected", 0, hwvad_detected, NULL),
};
+static int fsl_micfil_check_version(struct device *dev)
+{
+ struct fsl_micfil *micfil = dev_get_drvdata(dev);
+ unsigned int val;
+ int ret;
+
+ if (!micfil->soc->check_version)
+ return 0;
+
+ ret = regmap_read(micfil->regmap, REG_MICFIL_VERID, &val);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(dev, "VERID: 0x%016X\n", val);
+
+ micfil->verid.version = val &
+ (MICFIL_VERID_MAJOR_MASK | MICFIL_VERID_MINOR_MASK);
+ micfil->verid.version >>= MICFIL_VERID_MINOR_SHIFT;
+ micfil->verid.feature = val & MICFIL_VERID_FEATURE_MASK;
+
+ ret = regmap_read(micfil->regmap, REG_MICFIL_PARAM, &val);
+ if (ret < 0)
+ return ret;
+
+ dev_dbg(dev, "PARAM: 0x%016X\n", val);
+
+ micfil->param.hwvad_num = (val & MICFIL_PARAM_NUM_HWVAD_MASK) >>
+ MICFIL_PARAM_NUM_HWVAD_SHIFT;
+ micfil->param.hwvad_zcd = val & MICFIL_PARAM_HWVAD_ZCD;
+ micfil->param.hwvad_energy_mode = val & MICFIL_PARAM_HWVAD_ENERGY_MODE;
+ micfil->param.hwvad = val & MICFIL_PARAM_HWVAD;
+ micfil->param.dc_out_bypass = val & MICFIL_PARAM_DC_OUT_BYPASS;
+ micfil->param.dc_in_bypass = val & MICFIL_PARAM_DC_IN_BYPASS;
+ micfil->param.low_power = val & MICFIL_PARAM_LOW_POWER;
+ micfil->param.fil_out_width = val & MICFIL_PARAM_FIL_OUT_WIDTH;
+ micfil->param.fifo_ptrwid = (val & MICFIL_PARAM_FIFO_PTRWID_MASK) >>
+ MICFIL_PARAM_FIFO_PTRWID_SHIFT;
+ micfil->param.npair = (val & MICFIL_PARAM_NPAIR_MASK) >>
+ MICFIL_PARAM_NPAIR_SHIFT;
+
+ return 0;
+}
+
/* The SRES is a self-negated bit which provides the CPU with the
* capability to initialize the PDM Interface module through the
* slave-bus interface. This bit always reads as zero, and this
@@ -1037,6 +1084,9 @@ static irqreturn_t hwvad_err_isr(int irq, void *devid)
return IRQ_HANDLED;
}
+static int fsl_micfil_runtime_suspend(struct device *dev);
+static int fsl_micfil_runtime_resume(struct device *dev);
+
static int fsl_micfil_probe(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
@@ -1156,6 +1206,25 @@ static int fsl_micfil_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, micfil);
pm_runtime_enable(&pdev->dev);
+ if (!pm_runtime_enabled(&pdev->dev)) {
+ ret = fsl_micfil_runtime_resume(&pdev->dev);
+ if (ret)
+ goto err_pm_disable;
+ }
+
+ ret = pm_runtime_resume_and_get(&pdev->dev);
+ if (ret < 0)
+ goto err_pm_get_sync;
+
+ /* Get micfil version */
+ ret = fsl_micfil_check_version(&pdev->dev);
+ if (ret < 0)
+ dev_warn(&pdev->dev, "Error reading MICFIL version: %d\n", ret);
+
+ ret = pm_runtime_put_sync(&pdev->dev);
+ if (ret < 0 && ret != -ENOSYS)
+ goto err_pm_get_sync;
+
regcache_cache_only(micfil->regmap, true);
/*
@@ -1180,6 +1249,9 @@ static int fsl_micfil_probe(struct platform_device *pdev)
return ret;
+err_pm_get_sync:
+ if (!pm_runtime_status_suspended(&pdev->dev))
+ fsl_micfil_runtime_suspend(&pdev->dev);
err_pm_disable:
pm_runtime_disable(&pdev->dev);
@@ -1191,7 +1263,7 @@ static void fsl_micfil_remove(struct platform_device *pdev)
pm_runtime_disable(&pdev->dev);
}
-static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
+static int fsl_micfil_runtime_suspend(struct device *dev)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
@@ -1203,7 +1275,7 @@ static int __maybe_unused fsl_micfil_runtime_suspend(struct device *dev)
return 0;
}
-static int __maybe_unused fsl_micfil_runtime_resume(struct device *dev)
+static int fsl_micfil_runtime_resume(struct device *dev)
{
struct fsl_micfil *micfil = dev_get_drvdata(dev);
int ret;
diff --git a/sound/soc/fsl/fsl_micfil.h b/sound/soc/fsl/fsl_micfil.h
index b3c392ef5daf..231a52aff024 100644
--- a/sound/soc/fsl/fsl_micfil.h
+++ b/sound/soc/fsl/fsl_micfil.h
@@ -174,4 +174,40 @@
#define MICFIL_HWVAD_ENVELOPE_MODE 0
#define MICFIL_HWVAD_ENERGY_MODE 1
+/**
+ * struct fsl_micfil_verid - version id data
+ * @version: version number
+ * @feature: feature specification number
+ */
+struct fsl_micfil_verid {
+ u32 version;
+ u32 feature;
+};
+
+/**
+ * struct fsl_micfil_param - parameter data
+ * @hwvad_num: the number of HWVADs
+ * @hwvad_zcd: HWVAD zero-cross detector is active
+ * @hwvad_energy_mode: HWVAD energy mode is active
+ * @hwvad: HWVAD is active
+ * @dc_out_bypass: points out if the output DC remover is disabled
+ * @dc_in_bypass: points out if the input DC remover is disabled
+ * @low_power: low power decimation filter
+ * @fil_out_width: filter output width
+ * @fifo_ptrwid: FIFO pointer width
+ * @npair: number of microphone pairs
+ */
+struct fsl_micfil_param {
+ u32 hwvad_num;
+ bool hwvad_zcd;
+ bool hwvad_energy_mode;
+ bool hwvad;
+ bool dc_out_bypass;
+ bool dc_in_bypass;
+ bool low_power;
+ bool fil_out_width;
+ u32 fifo_ptrwid;
+ u32 npair;
+};
+
#endif /* _FSL_MICFIL_H */
--
2.25.1
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