forked from luck/tmp_suning_uos_patched
4bb1667255
Some drivers can be built on more platforms than they run on. This is a burden for users and distributors who package a kernel. They have to manually deselect some (for them useless) drivers when updating their configs via oldconfig. And yet, sometimes it is even impossible to disable the drivers without patching the kernel. Introduce a new config option COMPILE_TEST and make all those drivers to depend on the platform they run on, or on the COMPILE_TEST option. Now, when users/distributors choose COMPILE_TEST=n they will not have the drivers in their allmodconfig setups, but developers still can compile-test them with COMPILE_TEST=y. Now the drivers where we use this new option: * PTP_1588_CLOCK_PCH: The PCH EG20T is only compatible with Intel Atom processors so it should depend on x86. * FB_GEODE: Geode is 32-bit only so only enable it for X86_32. * USB_CHIPIDEA_IMX: The OF_DEVICE dependency will be met on powerpc systems -- which do not actually support the hardware via that method. * INTEL_MID_PTI: It is specific to the Penwell type of Intel Atom device. [v2] * remove EXPERT dependency [gregkh - remove chipidea portion, as it's incorrect, and also doesn't apply to my driver-core tree] Signed-off-by: Jiri Slaby <jslaby@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Jeff Mahoney <jeffm@suse.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: linux-usb@vger.kernel.org Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: linux-geode@lists.infradead.org Cc: linux-fbdev@vger.kernel.org Cc: Richard Cochran <richardcochran@gmail.com> Cc: netdev@vger.kernel.org Cc: Ben Hutchings <ben@decadent.org.uk> Cc: "Keller, Jacob E" <jacob.e.keller@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
91 lines
2.9 KiB
Plaintext
91 lines
2.9 KiB
Plaintext
#
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# PTP clock support configuration
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#
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menu "PTP clock support"
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config PTP_1588_CLOCK
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tristate "PTP clock support"
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select PPS
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help
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The IEEE 1588 standard defines a method to precisely
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synchronize distributed clocks over Ethernet networks. The
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standard defines a Precision Time Protocol (PTP), which can
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be used to achieve synchronization within a few dozen
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microseconds. In addition, with the help of special hardware
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time stamping units, it can be possible to achieve
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synchronization to within a few hundred nanoseconds.
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This driver adds support for PTP clocks as character
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devices. If you want to use a PTP clock, then you should
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also enable at least one clock driver as well.
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To compile this driver as a module, choose M here: the module
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will be called ptp.
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config PTP_1588_CLOCK_GIANFAR
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tristate "Freescale eTSEC as PTP clock"
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depends on GIANFAR
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select PTP_1588_CLOCK
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default y
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help
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This driver adds support for using the eTSEC as a PTP
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clock. This clock is only useful if your PTP programs are
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getting hardware time stamps on the PTP Ethernet packets
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using the SO_TIMESTAMPING API.
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To compile this driver as a module, choose M here: the module
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will be called gianfar_ptp.
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config PTP_1588_CLOCK_IXP46X
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tristate "Intel IXP46x as PTP clock"
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depends on IXP4XX_ETH
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select PTP_1588_CLOCK
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default y
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help
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This driver adds support for using the IXP46X as a PTP
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clock. This clock is only useful if your PTP programs are
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getting hardware time stamps on the PTP Ethernet packets
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using the SO_TIMESTAMPING API.
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To compile this driver as a module, choose M here: the module
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will be called ptp_ixp46x.
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comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
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depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
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config DP83640_PHY
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tristate "Driver for the National Semiconductor DP83640 PHYTER"
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depends on NETWORK_PHY_TIMESTAMPING
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depends on PHYLIB
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select PTP_1588_CLOCK
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---help---
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Supports the DP83640 PHYTER with IEEE 1588 features.
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This driver adds support for using the DP83640 as a PTP
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clock. This clock is only useful if your PTP programs are
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getting hardware time stamps on the PTP Ethernet packets
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using the SO_TIMESTAMPING API.
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In order for this to work, your MAC driver must also
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implement the skb_tx_timestamp() function.
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config PTP_1588_CLOCK_PCH
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tristate "Intel PCH EG20T as PTP clock"
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depends on X86 || COMPILE_TEST
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select PTP_1588_CLOCK
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help
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This driver adds support for using the PCH EG20T as a PTP
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clock. The hardware supports time stamping of PTP packets
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when using the end-to-end delay (E2E) mechansim. The peer
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delay mechansim (P2P) is not supported.
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This clock is only useful if your PTP programs are getting
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hardware time stamps on the PTP Ethernet packets using the
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SO_TIMESTAMPING API.
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To compile this driver as a module, choose M here: the module
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will be called ptp_pch.
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endmenu
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