Commit bbd7ffdb authored by Stephen Boyd's avatar Stephen Boyd
Browse files

clk: Allow the common clk framework to be selectable 

Enable build testing and configuration control of the common clk
framework so that more code coverage and testing can be done on the
common clk framework across various architectures. This also nicely
removes the requirement that architectures must select the framework
when they don't use it in architecture code.

There's one snag with doing this, and that's making sure that randconfig
builds don't select this option when some architecture or platform
implements 'struct clk' outside of the common clk framework. Introduce a
new config option 'HAVE_LEGACY_CLK' to indicate those platforms that
haven't migrated to the common clk framework and therefore shouldn't be
allowed to select this new config option. Also add a note that we hope
one day to remove this config entirely.

Based on a patch by Mark Brown <broonie@kernel.org>.

Cc: Mark Brown <broonie@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Mark Salter <msalter@redhat.com>
Cc: Aurelien Jacquiot <jacquiot.aurelien@gmail.com>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: <linux-mips@vger.kernel.org>
Cc: <linux-c6x-dev@linux-c6x.org>
Cc: <linux-m68k@lists.linux-m68k.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <linux-sh@vger.kernel.org>
Link: https://lore.kernel.org/r/1470915049-15249-1-git-send-email-broonie@kernel.org


Signed-off-by: default avatarStephen Boyd <sboyd@kernel.org>
Link: https://lkml.kernel.org/r/20200409064416.83340-8-sboyd@kernel.org


Reviewed-by: default avatarMark Brown <broonie@kernel.org>
Reviewed-by: default avatarArnd Bergmann <arnd@arndb.de>
parent 3fd2fdb3

arch/arm/Kconfig

+2 −0
Original line number Diff line number Diff line
@@ -363,6 +363,7 @@ config ARCH_EP93XX 
	select CPU_ARM920T

	select GENERIC_CLOCKEVENTS

	select GPIOLIB

	select HAVE_LEGACY_CLK

	help

	  This enables support for the Cirrus EP93xx series of CPUs.
@@ -521,6 +522,7 @@ config ARCH_OMAP1 
	select GENERIC_IRQ_MULTI_HANDLER

	select GPIOLIB

	select HAVE_IDE

	select HAVE_LEGACY_CLK

	select IRQ_DOMAIN

	select NEED_MACH_IO_H if PCCARD

	select NEED_MACH_MEMORY_H

arch/c6x/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ config C6X 
	select ARCH_HAS_SYNC_DMA_FOR_CPU

	select ARCH_HAS_SYNC_DMA_FOR_DEVICE

	select CLKDEV_LOOKUP

	select HAVE_LEGACY_CLK

	select GENERIC_ATOMIC64

	select GENERIC_IRQ_SHOW

	select HAVE_ARCH_TRACEHOOK

arch/m68k/Kconfig.cpu

+1 −1
Original line number Diff line number Diff line
@@ -28,7 +28,7 @@ config COLDFIRE 
	select CPU_HAS_NO_MULDIV64

	select GENERIC_CSUM

	select GPIOLIB

	select HAVE_CLK

	select HAVE_LEGACY_CLK



endchoice

arch/mips/Kconfig

+3 −2
Original line number Diff line number Diff line
@@ -181,7 +181,7 @@ config AR7 
	select SYS_SUPPORTS_ZBOOT_UART16550

	select GPIOLIB

	select VLYNQ

	select HAVE_CLK

	select HAVE_LEGACY_CLK

	help

	  Support for the Texas Instruments AR7 System-on-a-Chip

	  family: TNETD7100, 7200 and 7300.
@@ -296,9 +296,9 @@ config BCM63XX 
	select SYS_HAS_EARLY_PRINTK

	select SWAP_IO_SPACE

	select GPIOLIB

	select HAVE_CLK

	select MIPS_L1_CACHE_SHIFT_4

	select CLKDEV_LOOKUP

	select HAVE_LEGACY_CLK

	help

	  Support for BCM63XX based boards
@@ -419,6 +419,7 @@ config LANTIQ 
	select SWAP_IO_SPACE

	select BOOT_RAW

	select CLKDEV_LOOKUP

	select HAVE_LEGACY_CLK

	select USE_OF

	select PINCTRL

	select PINCTRL_LANTIQ

arch/mips/loongson2ef/Kconfig

+1 −1
Original line number Diff line number Diff line
@@ -46,7 +46,7 @@ config LEMOTE_MACH2F 
	select CSRC_R4K if ! MIPS_EXTERNAL_TIMER

	select DMA_NONCOHERENT

	select GENERIC_ISA_DMA_SUPPORT_BROKEN

	select HAVE_CLK

	select HAVE_LEGACY_CLK

	select FORCE_PCI

	select I8259

	select IRQ_MIPS_CPU

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