On Thu, Apr 7, 2022 at 4:49 PM Sascha Hauer <s.hauer@xxxxxxxxxxxxxx> wrote:
> For the quality setting the quality setting register values are directly
> exposed to the kcontrol and thus to userspace. This is unfortunate
> because the register settings contains invalid bit combinations marked
> as "N/A". For userspace it doesn't make much sense to be able to set
> these just to see that the driver responds with "Please make sure you
> select a valid quality." in the kernel log.
>
> Work around this by adding get/set functions for the quality setting.
>
> Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
> ---
>
> Notes:
> Changes since v3:
> - Leave default quality setting at 'medium'
>
> sound/soc/fsl/fsl_micfil.c | 109 ++++++++++++++++++++++++++-----------
> 1 file changed, 78 insertions(+), 31 deletions(-)
>
> diff --git a/sound/soc/fsl/fsl_micfil.c b/sound/soc/fsl/fsl_micfil.c
> index 4d8dfb2c22290..e71f799fc4c67 100644
> --- a/sound/soc/fsl/fsl_micfil.c
> +++ b/sound/soc/fsl/fsl_micfil.c
> @@ -31,6 +31,15 @@
>
> #define MICFIL_OSR_DEFAULT 16
>
> +enum quality {
> + QUALITY_HIGH,
> + QUALITY_MEDIUM,
> + QUALITY_LOW,
> + QUALITY_VLOW0,
> + QUALITY_VLOW1,
> + QUALITY_VLOW2,
> +};
> +
> struct fsl_micfil {
> struct platform_device *pdev;
> struct regmap *regmap;
> @@ -42,7 +51,7 @@ struct fsl_micfil {
> unsigned int dataline;
> char name[32];
> int irq[MICFIL_IRQ_LINES];
> - int quality; /*QUALITY 2-0 bits */
> + enum quality quality;
> };
>
> struct fsl_micfil_soc_data {
> @@ -65,29 +74,73 @@ static const struct of_device_id fsl_micfil_dt_ids[] =
> {
> };
> MODULE_DEVICE_TABLE(of, fsl_micfil_dt_ids);
>
> -/* Table 5. Quality Modes
> - * Medium 0 0 0
> - * High 0 0 1
> - * Very Low 2 1 0 0
> - * Very Low 1 1 0 1
> - * Very Low 0 1 1 0
> - * Low 1 1 1
> - */
> static const char * const micfil_quality_select_texts[] = {
> - "Medium", "High",
> - "N/A", "N/A",
> - "VLow2", "VLow1",
> - "VLow0", "Low",
> + [QUALITY_HIGH] = "High",
> + [QUALITY_MEDIUM] = "Medium",
> + [QUALITY_LOW] = "Low",
> + [QUALITY_VLOW0] = "VLow0",
> + [QUALITY_VLOW1] = "Vlow1",
> + [QUALITY_VLOW2] = "Vlow2",
> };
>
> static const struct soc_enum fsl_micfil_quality_enum =
> - SOC_ENUM_SINGLE(REG_MICFIL_CTRL2,
> - MICFIL_CTRL2_QSEL_SHIFT,
> - ARRAY_SIZE(micfil_quality_select_texts),
> - micfil_quality_select_texts);
> + SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(micfil_quality_select_texts),
> + micfil_quality_select_texts);
>
> static DECLARE_TLV_DB_SCALE(gain_tlv, 0, 100, 0);
>
> +static int micfil_set_quality(struct fsl_micfil *micfil)
> +{
> + u32 qsel;
> +
> + switch (micfil->quality) {
> + case QUALITY_HIGH:
> + qsel = MICFIL_QSEL_HIGH_QUALITY;
> + break;
> + case QUALITY_MEDIUM:
> + qsel = MICFIL_QSEL_MEDIUM_QUALITY;
> + break;
> + case QUALITY_LOW:
> + qsel = MICFIL_QSEL_LOW_QUALITY;
> + break;
> + case QUALITY_VLOW0:
> + qsel = MICFIL_QSEL_VLOW0_QUALITY;
> + break;
> + case QUALITY_VLOW1:
> + qsel = MICFIL_QSEL_VLOW1_QUALITY;
> + break;
> + case QUALITY_VLOW2:
> + qsel = MICFIL_QSEL_VLOW2_QUALITY;
> + break;
> + }
> +
> + return regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
> + MICFIL_CTRL2_QSEL,
> + FIELD_PREP(MICFIL_CTRL2_QSEL, qsel));
> +}
> +
> +static int micfil_quality_get(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
>
Alignment should match open parenthesis
> +{
> + struct snd_soc_component *cmpnt =
> snd_soc_kcontrol_component(kcontrol);
> + struct fsl_micfil *micfil = snd_soc_component_get_drvdata(cmpnt);
> +
> + ucontrol->value.integer.value[0] = micfil->quality;
> +
> + return 0;
> +}
> +
> +static int micfil_quality_set(struct snd_kcontrol *kcontrol,
> + struct snd_ctl_elem_value *ucontrol)
> +{
> + struct snd_soc_component *cmpnt =
> snd_soc_kcontrol_component(kcontrol);
> + struct fsl_micfil *micfil = snd_soc_component_get_drvdata(cmpnt);
> +
> + micfil->quality = ucontrol->value.integer.value[0];
> +
> + return micfil_set_quality(micfil);
> +}
> +
> static const struct snd_kcontrol_new fsl_micfil_snd_controls[] = {
> SOC_SINGLE_SX_TLV("CH0 Volume", REG_MICFIL_OUT_CTRL,
> MICFIL_OUTGAIN_CHX_SHIFT(0), 0xF, 0x7, gain_tlv),
> @@ -107,7 +160,7 @@ static const struct snd_kcontrol_new
> fsl_micfil_snd_controls[] = {
> MICFIL_OUTGAIN_CHX_SHIFT(7), 0xF, 0x7, gain_tlv),
> SOC_ENUM_EXT("MICFIL Quality Select",
> fsl_micfil_quality_enum,
> - snd_soc_get_enum_double, snd_soc_put_enum_double),
> + micfil_quality_get, micfil_quality_set),
> };
>
> /* The SRES is a self-negated bit which provides the CPU with the
> @@ -207,22 +260,21 @@ static int fsl_set_clock_params(struct device *dev,
> unsigned int rate)
> {
> struct fsl_micfil *micfil = dev_get_drvdata(dev);
> int clk_div = 8;
> + int osr = MICFIL_OSR_DEFAULT;
> int ret;
>
> - ret = clk_set_rate(micfil->mclk, rate * clk_div *
> MICFIL_OSR_DEFAULT * 8);
> + ret = clk_set_rate(micfil->mclk, rate * clk_div * osr * 8);
> if (ret)
> return ret;
>
> - /* set CICOSR */
> - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
> - MICFIL_CTRL2_CICOSR,
> - FIELD_PREP(MICFIL_CTRL2_CICOSR, 16 -
> MICFIL_OSR_DEFAULT));
> + ret = micfil_set_quality(micfil);
> if (ret)
> return ret;
>
> ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
> - MICFIL_CTRL2_CLKDIV,
> - FIELD_PREP(MICFIL_CTRL2_CLKDIV, clk_div));
> + MICFIL_CTRL2_CLKDIV | MICFIL_CTRL2_CICOSR,
> + FIELD_PREP(MICFIL_CTRL2_CLKDIV, clk_div) |
> + FIELD_PREP(MICFIL_CTRL2_CICOSR, 16 -
> osr));
>
> return ret;
> }
> @@ -275,12 +327,7 @@ static int fsl_micfil_dai_probe(struct snd_soc_dai
> *cpu_dai)
> struct fsl_micfil *micfil = dev_get_drvdata(cpu_dai->dev);
> int ret;
>
> - /* set qsel to medium */
> - ret = regmap_update_bits(micfil->regmap, REG_MICFIL_CTRL2,
> - MICFIL_CTRL2_QSEL,
> - FIELD_PREP(MICFIL_CTRL2_QSEL,
> MICFIL_QSEL_MEDIUM_QUALITY));
> - if (ret)
> - return ret;
> + micfil->quality = QUALITY_MEDIUM;
>
> /* set default gain to max_gain */
> regmap_write(micfil->regmap, REG_MICFIL_OUT_CTRL, 0x77777777);
> --
> 2.30.2
>
>
