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mfd: arizona: Allow building arizona MFD-core as module 

There is no reason why the arizona core,irq and codec model specific
regmap bits cannot be build as a module. All they do is export symbols
which are used by the arizona-spi/i2c and arizona-codec modules, which
themselves can be built as module.

Change the Kconfig and Makefile arizona bits so that the arizona MFD-core
can be built as a module.

This is especially useful on x86 platforms with a WM5102 codec, this
allows the arizona MFD driver necessary for the WM5102 codec to be
enabled in generic distro-kernels without growing the base kernel-image
size.

Note this also adds an explicit "depends on MFD_ARIZONA" to all the
arizona codec Kconfig options. The codec drivers use functions from mfd
arizona-core. These new depends are necessary to disallow the codec
drivers being builtin when the arizona-core is build as a module,
otherwise we end up with missing symbol errors when building vmlinuz.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
This commit is contained in:
Hans de Goede 2021-05-21 15:50:23 +02:00 committed by Lee Jones
parent f94c780172
commit 33d550701b
4 changed files with 15 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/mfd/Kconfig
View File

@ -1800,7 +1800,7 @@ config MFD_ARIZONA
select REGMAP
select REGMAP_IRQ
select MFD_CORE
bool
tristate
config MFD_ARIZONA_I2C
tristate "Cirrus Logic/Wolfson Microelectronics Arizona platform with I2C"

14
drivers/mfd/Makefile
View File

@ -41,24 +41,24 @@ obj-$(CONFIG_MFD_TQMX86) += tqmx86.o
obj-$(CONFIG_MFD_LOCHNAGAR) += lochnagar-i2c.o
obj-$(CONFIG_MFD_ARIZONA) += arizona-core.o
obj-$(CONFIG_MFD_ARIZONA) += arizona-irq.o
arizona-objs := arizona-core.o arizona-irq.o
obj-$(CONFIG_MFD_ARIZONA) += arizona.o
obj-$(CONFIG_MFD_ARIZONA_I2C) += arizona-i2c.o
obj-$(CONFIG_MFD_ARIZONA_SPI) += arizona-spi.o
ifeq ($(CONFIG_MFD_WM5102),y)
obj-$(CONFIG_MFD_ARIZONA) += wm5102-tables.o
arizona-objs += wm5102-tables.o
endif
ifeq ($(CONFIG_MFD_WM5110),y)
obj-$(CONFIG_MFD_ARIZONA) += wm5110-tables.o
arizona-objs += wm5110-tables.o
endif
ifeq ($(CONFIG_MFD_WM8997),y)
obj-$(CONFIG_MFD_ARIZONA) += wm8997-tables.o
arizona-objs += wm8997-tables.o
endif
ifeq ($(CONFIG_MFD_WM8998),y)
obj-$(CONFIG_MFD_ARIZONA) += wm8998-tables.o
arizona-objs += wm8998-tables.o
endif
ifeq ($(CONFIG_MFD_CS47L24),y)
obj-$(CONFIG_MFD_ARIZONA) += cs47l24-tables.o
arizona-objs += cs47l24-tables.o
endif
obj-$(CONFIG_MFD_WCD934X) += wcd934x.o
obj-$(CONFIG_MFD_WM8400) += wm8400-core.o

2
drivers/mfd/arizona-core.c
View File

@ -1447,3 +1447,5 @@ int arizona_dev_exit(struct arizona *arizona)
return 0;
}
EXPORT_SYMBOL_GPL(arizona_dev_exit);
MODULE_LICENSE("GPL v2");

10
sound/soc/codecs/Kconfig
View File

@ -690,7 +690,7 @@ config SND_SOC_CS47L15
config SND_SOC_CS47L24
tristate
depends on MFD_CS47L24
depends on MFD_CS47L24 && MFD_ARIZONA
config SND_SOC_CS47L35
tristate
@ -1564,11 +1564,11 @@ config SND_SOC_WM5100
config SND_SOC_WM5102
tristate
depends on MFD_WM5102
depends on MFD_WM5102 && MFD_ARIZONA
config SND_SOC_WM5110
tristate
depends on MFD_WM5110
depends on MFD_WM5110 && MFD_ARIZONA
config SND_SOC_WM8350
tristate
@ -1733,11 +1733,11 @@ config SND_SOC_WM8996
config SND_SOC_WM8997
tristate
depends on MFD_WM8997
depends on MFD_WM8997 && MFD_ARIZONA
config SND_SOC_WM8998
tristate
depends on MFD_WM8998
depends on MFD_WM8998 && MFD_ARIZONA
config SND_SOC_WM9081
tristate