Re: [PATCH] ASoC: meson: g12a-toacodec: add support for SM1 TOACODEC

On Thu 29 Apr 2021 at 19:01, Neil Armstrong narmstrong@baylibre.com wrote:

+static int sm1_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,

• 		     struct snd_ctl_elem_value *ucontrol)
  

+{

• struct snd_soc_component *component =

• snd_soc_dapm_kcontrol_component(kcontrol);
  

• struct snd_soc_dapm_context *dapm =

• snd_soc_dapm_kcontrol_dapm(kcontrol);
  

• struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
• unsigned int mux, changed;
• mux = snd_soc_enum_item_to_val(e, ucontrol->value.enumerated.item[0]);
• changed = snd_soc_component_test_bits(component, e->reg,

• 			      CTRL0_DAT_SEL_SM1,
  

• 			      FIELD_PREP(CTRL0_DAT_SEL_SM1, mux));
  

• if (!changed)

• return 0;
  

• /* Force disconnect of the mux while updating */
• snd_soc_dapm_mux_update_power(dapm, kcontrol, 0, NULL, NULL);
• snd_soc_component_update_bits(component, e->reg,

• 		      CTRL0_DAT_SEL_SM1 |
  

• 		      CTRL0_LRCLK_SEL_SM1 |
  

• 		      CTRL0_BCLK_SEL_SM1,
  

• 		      FIELD_PREP(CTRL0_DAT_SEL_SM1, mux) |
  

• 		      FIELD_PREP(CTRL0_LRCLK_SEL_SM1, mux) |
  

• 		      FIELD_PREP(CTRL0_BCLK_SEL_SM1, mux));
  

• /*

• * FIXME:
  

• * On this soc, the glue gets the MCLK directly from the clock
  

• * controller instead of going the through the TDM interface.
  

• *
  

• * Here we assume interface A uses clock A, etc ... While it is
  

• * true for now, it could be different. Instead the glue should
  

• * find out the clock used by the interface and select the same
  

• * source. For that, we will need regmap backed clock mux which
  

• * is a work in progress
  

• */
  

• snd_soc_component_update_bits(component, e->reg,

• 		      CTRL0_MCLK_SEL,
  

• 		      FIELD_PREP(CTRL0_MCLK_SEL, mux));
  

• snd_soc_dapm_mux_update_power(dapm, kcontrol, mux, e, NULL);
• return 0;

+}

Instead of duplicating this function, I'd prefer if you could use regmap fields