mirror of
git://projects.qi-hardware.com/ben-wpan.git
synced 2024-12-23 08:27:42 +02:00
105 lines
3.0 KiB
Bash
Executable File
105 lines
3.0 KiB
Bash
Executable File
#!/bin/sh
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hdr()
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{
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cat <<EOF
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From: Werner Almesberger <werner@almesberger.net>
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To: discussion@lists.en.qi-hardware.com
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EOF
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}
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intro()
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{
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hdr
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case "$1" in
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0) cat <<EOF
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Subject: [RFC 0/3] ATBEN kernel support for the Ben NanoNote
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For review before submitting things upstream:
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This set of three patches adds support for the ATBEN IEEE 802.15.4 board,
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along with the infrastructure needed for the Ben NanoNote. It consists
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of three parts:
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1) addition of a platform-specific reset function to the AT86RF230 driver.
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The driver assumes that it can reset the transceiver through a reset
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pin, but ATBEN uses power cycling instead. We therefore need a
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platform-specific function to perform the reset.
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2) addition of an SPI-GPIO driver optimized for the Jz4740. ATBEN
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connects to a physical MMC interface but uses SPI (with some quirks)
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for communication. We therefore have to use bit-banging.
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The SPI-GPIO driver would be too slow, so we introduce a driver
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optimized for the Ingenic Jz4740 SoC that implements a subset of
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SPI-GPIO's functionality and is up to about six times faster.
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3) last but not least, we add the platform definitions that connect
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the drivers and devices, and provide the platform-specific reset
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function. Since all this is specific to the Ben NanoNote, the code
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goes into arch/mips/jz4740/
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Comments welcome.
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- Werner
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EOF
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exit;;
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1) cat <<EOF
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Subject: [RFC 1/3] at86rf230: add support for platform-specific reset function
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Some platforms may not connect the /RST line directly to a GPIO, or they
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may not connect it at all and instead use power cycling to reset the
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transceiver.
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An example of the latter type is the ATBEN board on the Ben NanoNote.
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This patch adds support for a platform-specific reset function to the
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AT86RF230/1 driver. If the platform provides a reset function, "rstn"
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is ignored and no GPIO is allocated for it.
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EOF
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;;
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2) cat <<EOF
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Subject: [RFC 2/3] SPI-GPIO variant optimized for the Ingenic Jz4740 SoC
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This is a drop-in replacement for spi-gpio.c optimized for Jz4740-based
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systems. It is up to about six times faster than its generic counterpart.
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Only supports SPI mode 0 and CS active-low. Furthermore, MOSI, MISO, and
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SCK must be on the same port.
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A detailed performance analysis can be found here:
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http://projects.qi-hardware.com/index.php/p/ben-wpan/source/tree/master/atben/misc/atben-spi-performance.txt
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EOF
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;;
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3) cat <<EOF
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Subject: [RFC 3/3] add ATBEN framework for Ben NanoNote in arch/mips/jz4740/
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These are the driver and device definitions, and a platform-specific
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reset function needed for operating an ATBEN IEEE 802.15.4 board on
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the Ben NanoNote (aka QI_LB60).
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EOF
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;;
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*) echo "usage: $0 1|2|3" 1>&2
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exit 1;;
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esac
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}
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diffs()
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{
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case "$1" in
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1) git diff upstream/master include/linux/spi/at86rf230.h
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git diff upstream/master drivers/net/ieee802154/at86rf230.c
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;;
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2) git diff upstream/master drivers/spi
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;;
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3) git diff f07af316acaa03939e749a3ffe909510e5b7d536 arch/mips
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;;
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esac
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}
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intro "$@"
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echo ---
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diffs "$@" | diffstat
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echo
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diffs "$@"
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