From 3c35e79cead31c3bd79875ae90f9655dc77ad13c Mon Sep 17 00:00:00 2001
From: Dan Murphy <dmurphy@ti.com>
Date: Tue, 26 May 2020 15:09:17 -0500
Subject: [PATCH] ASoC: tlv320adcx140: Add support for configuring GPI pins
Git-commit: 3c35e79cead31c3bd79875ae90f9655dc77ad13c
Patch-mainline: v5.8-rc1
References: jsc#SLE-16518
Add support to configure the GPI pins to the specific configuration.
The pins can be disabled or be configured as data input for any of the
digital mic channels. In addition the GPI can be used a a general
purpose input, a Master clock input or an ASI input for daisy chaining
devices.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
Link: https://lore.kernel.org/r/20200526200917.10385-2-dmurphy@ti.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/codecs/tlv320adcx140.c | 28 ++++++++++++++++++++++++++++
sound/soc/codecs/tlv320adcx140.h | 7 +++++++
2 files changed, 35 insertions(+)
diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 472d759ba8a3..dd1176574f45 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -764,6 +764,9 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
int pdm_count;
u32 pdm_edges[ADCX140_NUM_PDM_EDGES];
u32 pdm_edge_val = 0;
+ int gpi_count;
+ u32 gpi_inputs[ADCX140_NUM_GPI_PINS];
+ u32 gpi_input_val = 0;
int i;
int ret;
@@ -809,6 +812,31 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
return ret;
}
+ gpi_count = device_property_count_u32(adcx140->dev, "ti,gpi-config");
+ if (gpi_count <= ADCX140_NUM_GPI_PINS && gpi_count > 0) {
+ ret = device_property_read_u32_array(adcx140->dev,
+ "ti,gpi-config",
+ gpi_inputs, gpi_count);
+ if (ret)
+ return ret;
+
+ gpi_input_val = gpi_inputs[ADCX140_GPI1_INDEX] << ADCX140_GPI_SHIFT |
+ gpi_inputs[ADCX140_GPI2_INDEX];
+
+ ret = regmap_write(adcx140->regmap, ADCX140_GPI_CFG0,
+ gpi_input_val);
+ if (ret)
+ return ret;
+
+ gpi_input_val = gpi_inputs[ADCX140_GPI3_INDEX] << ADCX140_GPI_SHIFT |
+ gpi_inputs[ADCX140_GPI4_INDEX];
+
+ ret = regmap_write(adcx140->regmap, ADCX140_GPI_CFG1,
+ gpi_input_val);
+ if (ret)
+ return ret;
+ }
+
ret = adcx140_reset(adcx140);
if (ret)
goto out;
diff --git a/sound/soc/codecs/tlv320adcx140.h b/sound/soc/codecs/tlv320adcx140.h
index 247827f315f1..39206bf1af12 100644
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -132,4 +132,11 @@
#define ADCX140_NUM_PDM_EDGES 4
#define ADCX140_PDM_EDGE_SHIFT 7
+#define ADCX140_NUM_GPI_PINS 4
+#define ADCX140_GPI_SHIFT 4
+#define ADCX140_GPI1_INDEX 0
+#define ADCX140_GPI2_INDEX 1
+#define ADCX140_GPI3_INDEX 2
+#define ADCX140_GPI4_INDEX 3
+
#endif /* _TLV320ADCX140_ */
--
2.16.4