Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1314271 > unrolled thread

[PATCH v3 0/3] ASoC: pcm179x: Add I2C support, declare support for continuous rates

Back to article view | Back to linux.kernel

Contents

  [PATCH v3 0/3] ASoC: pcm179x: Add I2C support, declare support for continuous rates Jacob Siverskog <jacob@teenage.engineering> - 2016-01-21 16:30 +0100
    [PATCH v3 2/3] ASoC: pcm179x: Add I2C interface driver Jacob Siverskog <jacob@teenage.engineering> - 2016-01-21 16:30 +0100

#1314271 — [PATCH v3 0/3] ASoC: pcm179x: Add I2C support, declare support for continuous rates

This series add support for I2C and declares support for continuous
sample rates.

Please note that this has only been tested using I2C and PCM1791A. I'd
be grateful if someone can test it with other devices in the PCM179X
family and/or SPI.

These patches are against linux-next.

[V3]: Allocation of private data moved to common code.

[V2]: Fix build issues found by kbuild test robot by adding static
keyword and proper symbol exports.

Jacob Siverskog (3):
  ASoC: pcm179x: Split into core and SPI parts
  ASoC: pcm179x: Add I2C interface driver
  ASoC: pcm179x: Support continuous rates

 .../devicetree/bindings/sound/pcm179x.txt          | 11 +++-
 sound/soc/codecs/Kconfig                           | 20 ++++++-
 sound/soc/codecs/Makefile                          |  4 ++
 sound/soc/codecs/pcm179x-i2c.c                     | 64 ++++++++++++++++++++++
 sound/soc/codecs/pcm179x-spi.c                     | 63 +++++++++++++++++++++
 sound/soc/codecs/pcm179x.c                         | 61 +++++++--------------
 sound/soc/codecs/pcm179x.h                         |  9 +--
 7 files changed, 184 insertions(+), 48 deletions(-)
 create mode 100644 sound/soc/codecs/pcm179x-i2c.c
 create mode 100644 sound/soc/codecs/pcm179x-spi.c

-- 
2.7.0

[toc] | [next] | [standalone]

#1314272 — [PATCH v3 2/3] ASoC: pcm179x: Add I2C interface driver

The PCM179x family supports both SPI and I2C. This patch adds support
for the I2C interface.

Reviewed-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Jacob Siverskog <jacob@teenage.engineering>
---
 .../devicetree/bindings/sound/pcm179x.txt          | 11 +++-
 sound/soc/codecs/Kconfig                           |  9 +++
 sound/soc/codecs/Makefile                          |  2 +
 sound/soc/codecs/pcm179x-i2c.c                     | 64 ++++++++++++++++++++++
 4 files changed, 85 insertions(+), 1 deletion(-)
 create mode 100644 sound/soc/codecs/pcm179x-i2c.c

diff --git a/Documentation/devicetree/bindings/sound/pcm179x.txt b/Documentation/devicetree/bindings/sound/pcm179x.txt
index 4ae70d3..436c2b2 100644
--- a/Documentation/devicetree/bindings/sound/pcm179x.txt
+++ b/Documentation/devicetree/bindings/sound/pcm179x.txt
@@ -1,6 +1,6 @@
 Texas Instruments pcm179x DT bindings
 
-This driver supports the SPI bus.
+This driver supports both the I2C and SPI bus.
 
 Required properties:
 
@@ -9,6 +9,11 @@ Required properties:
 For required properties on SPI, please consult
 Documentation/devicetree/bindings/spi/spi-bus.txt
 
+Required properties on I2C:
+
+ - reg: the I2C address
+
+
 Examples:
 
 	codec_spi: 1792a@0 {
@@ -16,3 +21,7 @@ Examples:
 		spi-max-frequency = <600000>;
 	};
 
+	codec_i2c: 1792a@4c {
+		compatible = "ti,pcm1792a";
+		reg = <0x4c>;
+	};
diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index 3866717..a27da1b 100644
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -83,6 +83,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_ML26124 if I2C
 	select SND_SOC_NAU8825 if I2C
 	select SND_SOC_PCM1681 if I2C
+	select SND_SOC_PCM179X_I2C if I2C
 	select SND_SOC_PCM179X_SPI if SPI_MASTER
 	select SND_SOC_PCM3008
 	select SND_SOC_PCM512x_I2C if I2C
@@ -502,6 +503,14 @@ config SND_SOC_PCM1681
 config SND_SOC_PCM179X
 	tristate
 
+config SND_SOC_PCM179X_I2C
+	tristate "Texas Instruments PCM179X CODEC (I2C)"
+	depends on I2C
+	select SND_SOC_PCM179X
+	help
+	  Enable support for Texas Instruments PCM179x CODEC.
+	  Select this if your PCM179x is connected via an I2C bus.
+
 config SND_SOC_PCM179X_SPI
 	tristate "Texas Instruments PCM179X CODEC (SPI)"
 	depends on SPI_MASTER
diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index 0fa454c..972395e 100644
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -77,6 +77,7 @@ snd-soc-ml26124-objs := ml26124.o
 snd-soc-nau8825-objs := nau8825.o
 snd-soc-pcm1681-objs := pcm1681.o
 snd-soc-pcm179x-codec-objs := pcm179x.o
+snd-soc-pcm179x-i2c-objs := pcm179x-i2c.o
 snd-soc-pcm179x-spi-objs := pcm179x-spi.o
 snd-soc-pcm3008-objs := pcm3008.o
 snd-soc-pcm512x-objs := pcm512x.o
@@ -276,6 +277,7 @@ obj-$(CONFIG_SND_SOC_ML26124)	+= snd-soc-ml26124.o
 obj-$(CONFIG_SND_SOC_NAU8825)   += snd-soc-nau8825.o
 obj-$(CONFIG_SND_SOC_PCM1681)	+= snd-soc-pcm1681.o
 obj-$(CONFIG_SND_SOC_PCM179X)	+= snd-soc-pcm179x-codec.o
+obj-$(CONFIG_SND_SOC_PCM179X_I2C)	+= snd-soc-pcm179x-i2c.o
 obj-$(CONFIG_SND_SOC_PCM179X_SPI)	+= snd-soc-pcm179x-spi.o
 obj-$(CONFIG_SND_SOC_PCM3008)	+= snd-soc-pcm3008.o
 obj-$(CONFIG_SND_SOC_PCM512x)	+= snd-soc-pcm512x.o
diff --git a/sound/soc/codecs/pcm179x-i2c.c b/sound/soc/codecs/pcm179x-i2c.c
new file mode 100644
index 0000000..ee73576
--- /dev/null
+++ b/sound/soc/codecs/pcm179x-i2c.c
@@ -0,0 +1,64 @@
+/*
+ * PCM179X ASoC I2C driver
+ *
+ * Copyright (c) Teenage Engineering AB 2016
+ *
+ *     Jacob Siverskog <jacob@teenage.engineering>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+
+#include "pcm179x.h"
+
+static int pcm179x_i2c_probe(struct i2c_client *client,
+			      const struct i2c_device_id *id)
+{
+	return pcm179x_common_init(&client->dev,
+			devm_regmap_init_i2c(client, &pcm179x_regmap_config));
+}
+
+static int pcm179x_i2c_remove(struct i2c_client *client)
+{
+	return pcm179x_common_exit(&client->dev);
+}
+
+static const struct of_device_id pcm179x_of_match[] = {
+	{ .compatible = "ti,pcm1792a", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, pcm179x_of_match);
+
+static const struct i2c_device_id pcm179x_i2c_ids[] = {
+	{ "pcm179x", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, pcm179x_i2c_ids);
+
+static struct i2c_driver pcm179x_i2c_driver = {
+	.driver = {
+		.name	= "pcm179x",
+		.of_match_table = of_match_ptr(pcm179x_of_match),
+	},
+	.id_table	= pcm179x_i2c_ids,
+	.probe		= pcm179x_i2c_probe,
+	.remove		= pcm179x_i2c_remove,
+};
+
+module_i2c_driver(pcm179x_i2c_driver);
+
+MODULE_DESCRIPTION("ASoC PCM179X I2C driver");
+MODULE_AUTHOR("Jacob Siverskog <jacob@teenage.engineering>");
+MODULE_LICENSE("GPL");
-- 
2.7.0

[toc] | [prev] | [standalone]

Back to top | Article view | linux.kernel

csiph-web