ASoC: sigmadsp: Split regmap and I2C support into separate modules

When the SigmaDSP module is built-in, but the I2C core is build as a module
we'll get a undefined reference:

	sound/built-in.o: In function `sigma_action_write_i2c':
		:(.text+0x5d8d4): undefined reference to `i2c_master_send'

This can happen if a audio driver that is using the regmap SigmaDSP interface is
built into the kernel, but core I2C support is build as a module. To fix this
split the SigmaDSP module into three modules, one module providing the core
infrastructure and two small modules implementing the regmap and I2C interfaces.
This allows e.g. the core infrastructure and regmap support to be built into the
kernel while I2C support can still be build as a module.

Fixes: dab464b60 ("ASoC: Add ADAU1361/ADAU1761 audio CODEC support")
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Mark Brown <broonie@linaro.org>

diff --git a/sound/soc/codecs/Kconfig b/sound/soc/codecs/Kconfig
index cbfa1e18f65192afade5b31cccc77558b1dd050d..0b9571c858f86ebb2f7c5f64f94920cd7408ab09 100644 (file)
--- a/sound/soc/codecs/Kconfig
+++ b/sound/soc/codecs/Kconfig
@@ -225,11 +225,11 @@ config SND_SOC_ADAU1373
 config SND_SOC_ADAU1701
        tristate "Analog Devices ADAU1701 CODEC"
        depends on I2C
-       select SND_SOC_SIGMADSP
+       select SND_SOC_SIGMADSP_I2C
 
 config SND_SOC_ADAU17X1
        tristate
-       select SND_SOC_SIGMADSP
+       select SND_SOC_SIGMADSP_REGMAP
 
 config SND_SOC_ADAU1761
        tristate
@@ -476,6 +476,14 @@ config SND_SOC_SIGMADSP
        tristate
        select CRC32
 
+config SND_SOC_SIGMADSP_I2C
+       tristate
+       select SND_SOC_SIGMADSP
+
+config SND_SOC_SIGMADSP_REGMAP
+       tristate
+       select SND_SOC_SIGMADSP
+
 config SND_SOC_SIRF_AUDIO_CODEC
        tristate "SiRF SoC internal audio codec"
        select REGMAP_MMIO

diff --git a/sound/soc/codecs/Makefile b/sound/soc/codecs/Makefile
index be3377b8d73fcddbe33bdf0e3a6e44a6d7b3d77b..1bd6e1cf6f82cb8f98c17c4108c4a3b2cf293a32 100644 (file)
--- a/sound/soc/codecs/Makefile
+++ b/sound/soc/codecs/Makefile
@@ -77,6 +77,8 @@ snd-soc-sgtl5000-objs := sgtl5000.o
 snd-soc-alc5623-objs := alc5623.o
 snd-soc-alc5632-objs := alc5632.o
 snd-soc-sigmadsp-objs := sigmadsp.o
+snd-soc-sigmadsp-i2c-objs := sigmadsp-i2c.o
+snd-soc-sigmadsp-regmap-objs := sigmadsp-regmap.o
 snd-soc-si476x-objs := si476x.o
 snd-soc-sirf-audio-codec-objs := sirf-audio-codec.o
 snd-soc-sn95031-objs := sn95031.o
@@ -240,6 +242,8 @@ obj-$(CONFIG_SND_SOC_RT5651)        += snd-soc-rt5651.o
 obj-$(CONFIG_SND_SOC_RT5677)   += snd-soc-rt5677.o
 obj-$(CONFIG_SND_SOC_SGTL5000)  += snd-soc-sgtl5000.o
 obj-$(CONFIG_SND_SOC_SIGMADSP) += snd-soc-sigmadsp.o
+obj-$(CONFIG_SND_SOC_SIGMADSP_I2C)     += snd-soc-sigmadsp-i2c.o
+obj-$(CONFIG_SND_SOC_SIGMADSP_REGMAP)  += snd-soc-sigmadsp-regmap.o
 obj-$(CONFIG_SND_SOC_SI476X)   += snd-soc-si476x.o
 obj-$(CONFIG_SND_SOC_SN95031)  +=snd-soc-sn95031.o
 obj-$(CONFIG_SND_SOC_SPDIF)    += snd-soc-spdif-rx.o snd-soc-spdif-tx.o

diff --git a/sound/soc/codecs/sigmadsp-i2c.c b/sound/soc/codecs/sigmadsp-i2c.c
new file mode 100644 (file)
index 0000000..246081a
--- /dev/null
+++ b/sound/soc/codecs/sigmadsp-i2c.c
@@ -0,0 +1,35 @@
+/*
+ * Load Analog Devices SigmaStudio firmware files
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/i2c.h>
+#include <linux/export.h>
+#include <linux/module.h>
+
+#include "sigmadsp.h"
+
+static int sigma_action_write_i2c(void *control_data,
+       const struct sigma_action *sa, size_t len)
+{
+       return i2c_master_send(control_data, (const unsigned char *)&sa->addr,
+               len);
+}
+
+int process_sigma_firmware(struct i2c_client *client, const char *name)
+{
+       struct sigma_firmware ssfw;
+
+       ssfw.control_data = client;
+       ssfw.write = sigma_action_write_i2c;
+
+       return _process_sigma_firmware(&client->dev, &ssfw, name);
+}
+EXPORT_SYMBOL(process_sigma_firmware);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("SigmaDSP I2C firmware loader");
+MODULE_LICENSE("GPL");

diff --git a/sound/soc/codecs/sigmadsp-regmap.c b/sound/soc/codecs/sigmadsp-regmap.c
new file mode 100644 (file)
index 0000000..f78ed8d
--- /dev/null
+++ b/sound/soc/codecs/sigmadsp-regmap.c
@@ -0,0 +1,36 @@
+/*
+ * Load Analog Devices SigmaStudio firmware files
+ *
+ * Copyright 2009-2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <linux/regmap.h>
+#include <linux/export.h>
+#include <linux/module.h>
+
+#include "sigmadsp.h"
+
+static int sigma_action_write_regmap(void *control_data,
+       const struct sigma_action *sa, size_t len)
+{
+       return regmap_raw_write(control_data, be16_to_cpu(sa->addr),
+               sa->payload, len - 2);
+}
+
+int process_sigma_firmware_regmap(struct device *dev, struct regmap *regmap,
+       const char *name)
+{
+       struct sigma_firmware ssfw;
+
+       ssfw.control_data = regmap;
+       ssfw.write = sigma_action_write_regmap;
+
+       return _process_sigma_firmware(dev, &ssfw, name);
+}
+EXPORT_SYMBOL(process_sigma_firmware_regmap);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("SigmaDSP regmap firmware loader");
+MODULE_LICENSE("GPL");

diff --git a/sound/soc/codecs/sigmadsp.c b/sound/soc/codecs/sigmadsp.c
index 4068f24912322b5e53f7ad90f5e4d562b5360cef..f2de7e049bc6c6d3c2b83bcd6d1b616c9a771535 100644 (file)
--- a/sound/soc/codecs/sigmadsp.c
+++ b/sound/soc/codecs/sigmadsp.c
@@ -34,23 +34,6 @@ enum {
        SIGMA_ACTION_END,
 };
 
-struct sigma_action {
-       u8 instr;
-       u8 len_hi;
-       __le16 len;
-       __be16 addr;
-       unsigned char payload[];
-} __packed;
-
-struct sigma_firmware {
-       const struct firmware *fw;
-       size_t pos;
-
-       void *control_data;
-       int (*write)(void *control_data, const struct sigma_action *sa,
-                       size_t len);
-};
-
 static inline u32 sigma_action_len(struct sigma_action *sa)
 {
        return (sa->len_hi << 16) | le16_to_cpu(sa->len);
@@ -138,7 +121,7 @@ process_sigma_actions(struct sigma_firmware *ssfw)
        return 0;
 }
 
-static int _process_sigma_firmware(struct device *dev,
+int _process_sigma_firmware(struct device *dev,
        struct sigma_firmware *ssfw, const char *name)
 {
        int ret;
@@ -197,50 +180,6 @@ static int _process_sigma_firmware(struct device *dev,
 
        return ret;
 }
-
-#if IS_ENABLED(CONFIG_I2C)
-
-static int sigma_action_write_i2c(void *control_data,
-       const struct sigma_action *sa, size_t len)
-{
-       return i2c_master_send(control_data, (const unsigned char *)&sa->addr,
-               len);
-}
-
-int process_sigma_firmware(struct i2c_client *client, const char *name)
-{
-       struct sigma_firmware ssfw;
-
-       ssfw.control_data = client;
-       ssfw.write = sigma_action_write_i2c;
-
-       return _process_sigma_firmware(&client->dev, &ssfw, name);
-}
-EXPORT_SYMBOL(process_sigma_firmware);
-
-#endif
-
-#if IS_ENABLED(CONFIG_REGMAP)
-
-static int sigma_action_write_regmap(void *control_data,
-       const struct sigma_action *sa, size_t len)
-{
-       return regmap_raw_write(control_data, be16_to_cpu(sa->addr),
-               sa->payload, len - 2);
-}
-
-int process_sigma_firmware_regmap(struct device *dev, struct regmap *regmap,
-       const char *name)
-{
-       struct sigma_firmware ssfw;
-
-       ssfw.control_data = regmap;
-       ssfw.write = sigma_action_write_regmap;
-
-       return _process_sigma_firmware(dev, &ssfw, name);
-}
-EXPORT_SYMBOL(process_sigma_firmware_regmap);
-
-#endif
+EXPORT_SYMBOL_GPL(_process_sigma_firmware);
 
 MODULE_LICENSE("GPL");

diff --git a/sound/soc/codecs/sigmadsp.h b/sound/soc/codecs/sigmadsp.h
index e439cbd7af7d554b349a3741248d3793af62e977..c47cd23e98277329474c4925062553851ea9cd1f 100644 (file)
--- a/sound/soc/codecs/sigmadsp.h
+++ b/sound/soc/codecs/sigmadsp.h
@@ -12,6 +12,26 @@
 #include <linux/device.h>
 #include <linux/regmap.h>
 
+struct sigma_action {
+       u8 instr;
+       u8 len_hi;
+       __le16 len;
+       __be16 addr;
+       unsigned char payload[];
+} __packed;
+
+struct sigma_firmware {
+       const struct firmware *fw;
+       size_t pos;
+
+       void *control_data;
+       int (*write)(void *control_data, const struct sigma_action *sa,
+                       size_t len);
+};
+
+int _process_sigma_firmware(struct device *dev,
+       struct sigma_firmware *ssfw, const char *name);
+
 struct i2c_client;
 
 extern int process_sigma_firmware(struct i2c_client *client, const char *name);