ASoC: tlv320adcx140: Add GPO configuration and drive output config

Add General Purpose Output (GPO) configuration and driver output
configuration.  The GPOs can be configured as a GPO, IRQ, SDOUT or a
PDMCLK output.  In addition the output drive can be configured with
various configurations.

Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200728160833.24130-2-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 938c5ef..7bb9e9a 100644 (file)
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -37,6 +37,13 @@ struct adcx140_priv {
        unsigned int slot_width;
 };
 
+static const char * const gpo_config_names[] = {
+       "ti,gpo-config-1",
+       "ti,gpo-config-2",
+       "ti,gpo-config-3",
+       "ti,gpo-config-4",
+};
+
 static const struct reg_default adcx140_reg_defaults[] = {
        { ADCX140_PAGE_SELECT, 0x00 },
        { ADCX140_SW_RESET, 0x00 },
@@ -60,10 +67,10 @@ static const struct reg_default adcx140_reg_defaults[] = {
        { ADCX140_PDMCLK_CFG, 0x40 },
        { ADCX140_PDM_CFG, 0x00 },
        { ADCX140_GPIO_CFG0, 0x22 },
+       { ADCX140_GPO_CFG0, 0x00 },
        { ADCX140_GPO_CFG1, 0x00 },
        { ADCX140_GPO_CFG2, 0x00 },
        { ADCX140_GPO_CFG3, 0x00 },
-       { ADCX140_GPO_CFG4, 0x00 },
        { ADCX140_GPO_VAL, 0x00 },
        { ADCX140_GPIO_MON, 0x00 },
        { ADCX140_GPI_CFG0, 0x00 },
@@ -756,6 +763,43 @@ static const struct snd_soc_dai_ops adcx140_dai_ops = {
        .set_tdm_slot   = adcx140_set_dai_tdm_slot,
 };
 
+static int adcx140_configure_gpo(struct adcx140_priv *adcx140)
+{
+       u32 gpo_outputs[ADCX140_NUM_GPOS];
+       u32 gpo_output_val = 0;
+       int ret;
+       int i;
+
+       for (i = 0; i < ADCX140_NUM_GPOS; i++) {
+               ret = device_property_read_u32_array(adcx140->dev,
+                                                    gpo_config_names[i],
+                                                    gpo_outputs,
+                                                    ADCX140_NUM_GPO_CFGS);
+               if (ret)
+                       continue;
+
+               if (gpo_outputs[0] > ADCX140_GPO_CFG_MAX) {
+                       dev_err(adcx140->dev, "GPO%d config out of range\n", i + 1);
+                       return -EINVAL;
+               }
+
+               if (gpo_outputs[1] > ADCX140_GPO_DRV_MAX) {
+                       dev_err(adcx140->dev, "GPO%d drive out of range\n", i + 1);
+                       return -EINVAL;
+               }
+
+               gpo_output_val = gpo_outputs[0] << ADCX140_GPO_SHIFT |
+                                gpo_outputs[1];
+               ret = regmap_write(adcx140->regmap, ADCX140_GPO_CFG1 + i,
+                                  gpo_output_val);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+
+}
+
 static int adcx140_codec_probe(struct snd_soc_component *component)
 {
        struct adcx140_priv *adcx140 = snd_soc_component_get_drvdata(component);
@@ -837,6 +881,10 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
                        return ret;
        }
 
+       ret = adcx140_configure_gpo(adcx140);
+       if (ret)
+               goto out;
+
        ret = adcx140_reset(adcx140);
        if (ret)
                goto out;

diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h
index ab3fec8..eedbc1d 100644 (file)
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -36,10 +36,10 @@
 #define ADCX140_PDMCLK_CFG     0x1f
 #define ADCX140_PDM_CFG                0x20
 #define ADCX140_GPIO_CFG0      0x21
-#define ADCX140_GPO_CFG1       0x22
-#define ADCX140_GPO_CFG2       0x23
-#define ADCX140_GPO_CFG3       0x24
-#define ADCX140_GPO_CFG4       0x25
+#define ADCX140_GPO_CFG0       0x22
+#define ADCX140_GPO_CFG1       0x23
+#define ADCX140_GPO_CFG2       0x24
+#define ADCX140_GPO_CFG3       0x25
 #define ADCX140_GPO_VAL                0x29
 #define ADCX140_GPIO_MON       0x2a
 #define ADCX140_GPI_CFG0       0x2b
@@ -139,4 +139,10 @@
 #define ADCX140_GPI3_INDEX             2
 #define ADCX140_GPI4_INDEX             3
 
+#define ADCX140_NUM_GPOS               4
+#define ADCX140_NUM_GPO_CFGS           2
+#define ADCX140_GPO_SHIFT              4
+#define ADCX140_GPO_CFG_MAX            4
+#define ADCX140_GPO_DRV_MAX            5
+
 #endif /* _TLV320ADCX140_ */