From: Dan Murphy <dmurphy@ti.com>
To: <lgirdwood@gmail.com>, <broonie@kernel.org>, <perex@perex.cz>,
<tiwai@suse.com>
Cc: <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
Dan Murphy <dmurphy@ti.com>
Subject: [PATCH v2 3/3] ASoC: tlv320adcx140: Configure PDM sampling edge
Date: Wed, 13 May 2020 15:05:49 -0500 [thread overview]
Message-ID: <20200513200549.12213-3-dmurphy@ti.com> (raw)
In-Reply-To: <20200513200549.12213-1-dmurphy@ti.com>
Configure the PDM sampling edges based on the values from the firmware.
Signed-off-by: Dan Murphy <dmurphy@ti.com>
---
sound/soc/codecs/tlv320adcx140.c | 22 ++++++++++++++++++++++
sound/soc/codecs/tlv320adcx140.h | 3 +++
2 files changed, 25 insertions(+)
diff --git a/sound/soc/codecs/tlv320adcx140.c b/sound/soc/codecs/tlv320adcx140.c
index 97634e0ca0ba..140a5802a9a9 100644
--- a/sound/soc/codecs/tlv320adcx140.c
+++ b/sound/soc/codecs/tlv320adcx140.c
@@ -760,6 +760,10 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
int sleep_cfg_val = ADCX140_WAKE_DEV;
u8 bias_source;
u8 vref_source;
+ int pdm_count;
+ u32 pdm_edges[ADCX140_NUM_PDM_EDGES];
+ u32 pdm_edge_val = 0;
+ int i;
int ret;
ret = device_property_read_u8(adcx140->dev, "ti,mic-bias-source",
@@ -786,6 +790,24 @@ static int adcx140_codec_probe(struct snd_soc_component *component)
bias_source |= vref_source;
+ pdm_count = device_property_count_u32(adcx140->dev,
+ "ti,pdm-edge-select");
+ if (pdm_count <= ADCX140_NUM_PDM_EDGES && pdm_count > 0) {
+ ret = device_property_read_u32_array(adcx140->dev,
+ "ti,pdm-edge-select",
+ pdm_edges, pdm_count);
+ if (ret)
+ return ret;
+
+ for (i = 0; i < pdm_count; i++)
+ pdm_edge_val |= pdm_edges[i] << (ADCX140_PDM_EDGE_SHIFT - i);
+
+ ret = regmap_write(adcx140->regmap, ADCX140_PDM_CFG,
+ pdm_edge_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 6d055e55909e..432eaf25d1a7 100644
--- a/sound/soc/codecs/tlv320adcx140.h
+++ b/sound/soc/codecs/tlv320adcx140.h
@@ -128,4 +128,7 @@
#define ADCX140_TX_OFFSET_MASK GENMASK(4, 0)
+#define ADCX140_NUM_PDM_EDGES 4
+#define ADCX140_PDM_EDGE_SHIFT 7
+
#endif /* _TLV320ADCX140_ */
--
2.26.2
next prev parent reply other threads:[~2020-05-13 20:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-13 20:05 [PATCH v2 1/3] ASoC: tlv320adcx140: Add controls for PDM clk Dan Murphy
2020-05-13 20:05 ` [PATCH v2 2/3] ASoC: tlv320adcx140: Add device tree property for PDM edges Dan Murphy
2020-05-14 8:09 ` Ricard Wanderlof
2020-05-14 12:09 ` Dan Murphy
2020-05-13 20:05 ` Dan Murphy [this message]
2020-05-14 17:05 ` [PATCH v2 1/3] ASoC: tlv320adcx140: Add controls for PDM clk Mark Brown
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