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tty: serial: move sdio_uart from mmc/core to tty/serial

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sdio_uart is an SDIO function driver, not part of the MMC/SDIO core.
Keeping it in drivers/mmc/core/ is misplaced: it registers to the SDIO
bus (sdio_register_driver) and only uses the public SDIO API from
include/linux/mmc/, with no dependency on any mmc core internals.

Other SDIO function drivers live under their respective functional
subsystem, e.g. the SDIO WiFi drivers are under drivers/net/wireless/.
sdio_uart should likewise be placed under its functional subsystem, tty,
just like the PCIe and I2C/SPI transport drivers (men_z135_uart,
sc16is7xx, max310x) that live under drivers/tty/serial/.

Historically almost all changes to this driver were tty API changes
(e.g. tty_operations adjustments, alloc_tty_driver removal), yet
scripts/get_maintainer.pl never listed the TTY maintainers while the
file lived under drivers/mmc/core/. Moving it under drivers/tty/serial/
makes get_maintainer.pl report the proper TTY/serial maintainers and
reviewers, which benefits future maintenance of this driver.

No functional change. The CONFIG_SDIO_UART symbol is intentionally kept
unchanged to avoid breaking existing configs; the dependency is updated
to 'TTY && MMC' accordingly.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Link: https://patch.msgid.link/1791626517-18161-1-git-send-email-shawn.lin@rock-chips.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Shawn Lin 2026-10-10 18:01:57 +08:00 committed by Greg Kroah-Hartman
parent 1c41d09dcd
commit 7662a02e53
5 changed files with 11 additions and 8 deletions
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7
drivers/mmc/core/Kconfig
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@ -64,13 +64,6 @@ config MMC_BLOCK_MINORS
If unsure, say 8 here.
config SDIO_UART
tristate "SDIO UART/GPS class support"
depends on TTY
help
SDIO function driver for SDIO cards that implements the UART
class, as well as the GPS class which appears like a UART.
config MMC_TEST
tristate "MMC host test driver"
help

1
drivers/mmc/core/Makefile
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@ -17,5 +17,4 @@ mmc_core-$(CONFIG_DEBUG_FS) += debugfs.o
obj-$(CONFIG_MMC_BLOCK) += mmc_block.o
mmc_block-objs := block.o queue.o
obj-$(CONFIG_MMC_TEST) += mmc_test.o
obj-$(CONFIG_SDIO_UART) += sdio_uart.o
mmc_core-$(CONFIG_MMC_CRYPTO) += crypto.o

10
drivers/tty/serial/Kconfig
View File

@ -1387,6 +1387,16 @@ config SERIAL_MEN_Z135
This driver can also be build as a module. If so, the module will be called
men_z135_uart.ko
config SDIO_UART
tristate "SDIO UART/GPS class support"
depends on TTY && MMC
help
SDIO function driver for SDIO cards that implements the UART
class, as well as the GPS class which appears like a UART.
This driver can also be built as a module. If so, the module will
be called sdio_uart.
config SERIAL_SPRD
tristate "Support for Spreadtrum serial"
select SERIAL_CORE

1
drivers/tty/serial/Makefile
View File

@ -77,6 +77,7 @@ obj-$(CONFIG_SERIAL_SCCNXP) += sccnxp.o
obj-$(CONFIG_SERIAL_SC16IS7XX) += sc16is7xx.o
obj-$(CONFIG_SERIAL_SC16IS7XX_SPI) += sc16is7xx_spi.o
obj-$(CONFIG_SERIAL_SC16IS7XX_I2C) += sc16is7xx_i2c.o
obj-$(CONFIG_SDIO_UART) += sdio_uart.o
obj-$(CONFIG_SERIAL_SH_SCI) += sh-sci.o
obj-$(CONFIG_SERIAL_SIFIVE) += sifive.o
obj-$(CONFIG_SERIAL_SPRD) += sprd_serial.o

0
drivers/mmc/core/sdio_uart.c → drivers/tty/serial/sdio_uart.c
View File