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d1cbfd771c
In order to break the hard dependency between the PTP clock subsystem and ethernet drivers capable of being clock providers, this patch provides simple PTP stub functions to allow linkage of those drivers into the kernel even when the PTP subsystem is configured out. Drivers must be ready to accept NULL from ptp_clock_register() in that case. And to make it possible for PTP to be configured out, the select statement in those driver's Kconfig menu entries is converted to the new "imply" statement. This way the PTP subsystem may have Kconfig dependencies of its own, such as POSIX_TIMERS, without having to make those ethernet drivers unavailable if POSIX timers are cconfigured out. And when support for POSIX timers is selected again then the default config option for PTP clock support will automatically be adjusted accordingly. The pch_gbe driver is a bit special as it relies on extra code in drivers/ptp/ptp_pch.c. Therefore we let the make process descend into drivers/ptp/ even if PTP_1588_CLOCK is unselected. Signed-off-by: Nicolas Pitre <nico@linaro.org> Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Edward Cree <ecree@solarflare.com> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: John Stultz <john.stultz@linaro.org> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Cc: Paul Bolle <pebolle@tiscali.nl> Cc: linux-kbuild@vger.kernel.org Cc: netdev@vger.kernel.org Cc: Michal Marek <mmarek@suse.com> Link: http://lkml.kernel.org/r/1478841010-28605-4-git-send-email-nicolas.pitre@linaro.org Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
47 lines
1.2 KiB
Plaintext
47 lines
1.2 KiB
Plaintext
#
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# Renesas device configuration
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#
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config NET_VENDOR_RENESAS
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bool "Renesas devices"
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default y
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---help---
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If you have a network (Ethernet) card belonging to this class, say Y.
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Note that the answer to this question doesn't directly affect the
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kernel: saying N will just cause the configurator to skip all
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the questions about Renesas devices. If you say Y, you will be asked
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for your specific device in the following questions.
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if NET_VENDOR_RENESAS
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config SH_ETH
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tristate "Renesas SuperH Ethernet support"
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depends on HAS_DMA
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depends on ARCH_RENESAS || SUPERH || COMPILE_TEST
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select CRC32
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select MII
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select MDIO_BITBANG
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select PHYLIB
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---help---
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Renesas SuperH Ethernet device driver.
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This driver supporting CPUs are:
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- SH7619, SH7710, SH7712, SH7724, SH7734, SH7763, SH7757,
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R8A7740, R8A774x, R8A777x and R8A779x.
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config RAVB
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tristate "Renesas Ethernet AVB support"
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depends on HAS_DMA
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depends on ARCH_RENESAS || COMPILE_TEST
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select CRC32
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select MII
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select MDIO_BITBANG
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select PHYLIB
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imply PTP_1588_CLOCK
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help
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Renesas Ethernet AVB device driver.
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This driver supports the following SoCs:
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- R8A779x.
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endif # NET_VENDOR_RENESAS
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