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Message-Id: <20210511074829.4110036-2-narmstrong@baylibre.com>
Date: Tue, 11 May 2021 09:48:28 +0200
From: Neil Armstrong <narmstrong@...libre.com>
To: jbrunet@...libre.com, broonie@...nel.org
Cc: alsa-devel@...a-project.org, linux-amlogic@...ts.infradead.org,
linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
Neil Armstrong <narmstrong@...libre.com>
Subject: [PATCH v3 1/2] ASoC: meson: g12a-toacodec: use regmap fields to prepare SM1 support
Switch usage to regmap field for bits handled by the g12a_toacodec_mux_put_enum()
function to avoid uselesss code duplication when adding SM1 variant support.
Signed-off-by: Neil Armstrong <narmstrong@...libre.com>
---
sound/soc/meson/g12a-toacodec.c | 80 +++++++++++++++++++++++++--------
1 file changed, 62 insertions(+), 18 deletions(-)
diff --git a/sound/soc/meson/g12a-toacodec.c b/sound/soc/meson/g12a-toacodec.c
index 9339fabccb79..6317bd9c86f4 100644
--- a/sound/soc/meson/g12a-toacodec.c
+++ b/sound/soc/meson/g12a-toacodec.c
@@ -21,17 +21,31 @@
#define TOACODEC_CTRL0 0x0
#define CTRL0_ENABLE_SHIFT 31
-#define CTRL0_DAT_SEL_SHIFT 14
-#define CTRL0_DAT_SEL (0x3 << CTRL0_DAT_SEL_SHIFT)
+#define CTRL0_DAT_SEL_MSB 15
+#define CTRL0_DAT_SEL_LSB 14
#define CTRL0_LANE_SEL 12
-#define CTRL0_LRCLK_SEL GENMASK(9, 8)
+#define CTRL0_LRCLK_SEL_MSB 9
+#define CTRL0_LRCLK_SEL_LSB 8
#define CTRL0_BLK_CAP_INV BIT(7)
#define CTRL0_BCLK_O_INV BIT(6)
-#define CTRL0_BCLK_SEL GENMASK(5, 4)
+#define CTRL0_BCLK_SEL_MSB 5
+#define CTRL0_BCLK_SEL_LSB 4
#define CTRL0_MCLK_SEL GENMASK(2, 0)
#define TOACODEC_OUT_CHMAX 2
+struct g12a_toacodec {
+ struct regmap_field *field_dat_sel;
+ struct regmap_field *field_lrclk_sel;
+ struct regmap_field *field_bclk_sel;
+};
+
+struct g12a_toacodec_match_data {
+ struct reg_field field_dat_sel;
+ struct reg_field field_lrclk_sel;
+ struct reg_field field_bclk_sel;
+};
+
static const char * const g12a_toacodec_mux_texts[] = {
"I2S A", "I2S B", "I2S C",
};
@@ -41,29 +55,24 @@ static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
{
struct snd_soc_component *component =
snd_soc_dapm_kcontrol_component(kcontrol);
+ struct g12a_toacodec *priv = snd_soc_component_get_drvdata(component);
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;
+ unsigned int mux, reg;
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,
- FIELD_PREP(CTRL0_DAT_SEL, mux));
+ regmap_field_read(priv->field_dat_sel, ®);
- if (!changed)
+ if (mux == reg)
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 |
- CTRL0_LRCLK_SEL |
- CTRL0_BCLK_SEL,
- FIELD_PREP(CTRL0_DAT_SEL, mux) |
- FIELD_PREP(CTRL0_LRCLK_SEL, mux) |
- FIELD_PREP(CTRL0_BCLK_SEL, mux));
+ regmap_field_write(priv->field_dat_sel, mux);
+ regmap_field_write(priv->field_lrclk_sel, mux);
+ regmap_field_write(priv->field_bclk_sel, mux);
/*
* FIXME:
@@ -86,7 +95,7 @@ static int g12a_toacodec_mux_put_enum(struct snd_kcontrol *kcontrol,
}
static SOC_ENUM_SINGLE_DECL(g12a_toacodec_mux_enum, TOACODEC_CTRL0,
- CTRL0_DAT_SEL_SHIFT,
+ CTRL0_DAT_SEL_LSB,
g12a_toacodec_mux_texts);
static const struct snd_kcontrol_new g12a_toacodec_mux =
@@ -205,19 +214,42 @@ static const struct regmap_config g12a_toacodec_regmap_cfg = {
.reg_stride = 4,
};
+static const struct g12a_toacodec_match_data g12a_toacodec_match_data = {
+ .field_dat_sel = REG_FIELD(TOACODEC_CTRL0, 14, 15),
+ .field_lrclk_sel = REG_FIELD(TOACODEC_CTRL0, 8, 9),
+ .field_bclk_sel = REG_FIELD(TOACODEC_CTRL0, 4, 5),
+};
+
static const struct of_device_id g12a_toacodec_of_match[] = {
- { .compatible = "amlogic,g12a-toacodec", },
+ {
+ .compatible = "amlogic,g12a-toacodec",
+ .data = &g12a_toacodec_match_data,
+ },
{}
};
MODULE_DEVICE_TABLE(of, g12a_toacodec_of_match);
static int g12a_toacodec_probe(struct platform_device *pdev)
{
+ const struct g12a_toacodec_match_data *data;
struct device *dev = &pdev->dev;
+ struct g12a_toacodec *priv;
void __iomem *regs;
struct regmap *map;
int ret;
+ data = device_get_match_data(dev);
+ if (!data) {
+ dev_err(dev, "failed to match device\n");
+ return -ENODEV;
+ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, priv);
+
ret = device_reset(dev);
if (ret)
return ret;
@@ -233,6 +265,18 @@ static int g12a_toacodec_probe(struct platform_device *pdev)
return PTR_ERR(map);
}
+ priv->field_dat_sel = devm_regmap_field_alloc(dev, map, data->field_dat_sel);
+ if (IS_ERR(priv->field_dat_sel))
+ return PTR_ERR(priv->field_dat_sel);
+
+ priv->field_lrclk_sel = devm_regmap_field_alloc(dev, map, data->field_lrclk_sel);
+ if (IS_ERR(priv->field_lrclk_sel))
+ return PTR_ERR(priv->field_lrclk_sel);
+
+ priv->field_bclk_sel = devm_regmap_field_alloc(dev, map, data->field_bclk_sel);
+ if (IS_ERR(priv->field_bclk_sel))
+ return PTR_ERR(priv->field_bclk_sel);
+
return devm_snd_soc_register_component(dev,
&g12a_toacodec_component_drv, g12a_toacodec_dai_drv,
ARRAY_SIZE(g12a_toacodec_dai_drv));
--
2.25.1
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