Date:2013-04-30 02:12:55 (6 years 7 months ago)
Author:Werner Almesberger
Commit:54630e0697f46feb4a22d295079907d1937eaf92
Message:atben/misc/mkpatches: script to generate mails for the ATBEN kernel patches

Files: atben/misc/mkpatches (1 diff)

Change Details

atben/misc/mkpatches
1#!/bin/sh
2
3hdr()
4{
5    cat <<EOF
6From: Werner Almesberger <werner@almesberger.net>
7To: discussion@lists.en.qi-hardware.com
8EOF
9}
10
11
12intro()
13{
14    hdr
15    case "$1" in
16    0) cat <<EOF
17Subject: [RFC 0/3] ATBEN kernel support for the Ben NanoNote
18
19For review before submitting things upstream:
20
21This set of three patches adds support for the ATBEN IEEE 802.15.4 board,
22along with the infrastructure needed for the Ben NanoNote. It consists
23of three parts:
24
251) addition of a platform-specific reset function to the AT86RF230 driver.
26   The driver assumes that it can reset the transceiver through a reset
27   pin, but ATBEN uses power cycling instead. We therefore need a
28   platform-specific function to perform the reset.
29
302) addition of an SPI-GPIO driver optimized for the Jz4740. ATBEN
31   connects to a physical MMC interface but uses SPI (with some quirks)
32   for communication. We therefore have to use bit-banging.
33
34   The SPI-GPIO driver would be too slow, so we introduce a driver
35   optimized for the Ingenic Jz4740 SoC that implements a subset of
36   SPI-GPIO's functionality and is up to about six times faster.
37
383) last but not least, we add the platform definitions that connect
39   the drivers and devices, and provide the platform-specific reset
40   function. Since all this is specific to the Ben NanoNote, the code
41   goes into arch/mips/jz4740/
42
43Comments welcome.
44
45- Werner
46EOF
47        exit;;
48    1) cat <<EOF
49Subject: [RFC 1/3] at86rf230: add support for platform-specific reset function
50
51Some platforms may not connect the /RST line directly to a GPIO, or they
52may not connect it at all and instead use power cycling to reset the
53transceiver.
54
55An example of the latter type is the ATBEN board on the Ben NanoNote.
56
57This patch adds support for a platform-specific reset function to the
58AT86RF230/1 driver. If the platform provides a reset function, "rstn"
59is ignored and no GPIO is allocated for it.
60EOF
61        ;;
62    2) cat <<EOF
63Subject: [RFC 2/3] SPI-GPIO variant optimized for the Ingenic Jz4740 SoC
64
65This is a drop-in replacement for spi-gpio.c optimized for Jz4740-based
66systems. It is up to about six times faster than its generic counterpart.
67Only supports SPI mode 0 and CS active-low. Furthermore, MOSI, MISO, and
68SCK must be on the same port.
69
70A detailed performance analysis can be found here:
71http://projects.qi-hardware.com/index.php/p/ben-wpan/source/tree/master/atben/misc/atben-spi-performance.txt
72EOF
73    ;;
74    3) cat <<EOF
75Subject: [RFC 3/3] add ATBEN framework for Ben NanoNote in arch/mips/jz4740/
76
77These are the driver and device definitions, and a platform-specific
78reset function needed for operating an ATBEN IEEE 802.15.4 board on
79the Ben NanoNote (aka QI_LB60).
80EOF
81    ;;
82    *) echo "usage: $0 1|2|3" 1>&2
83        exit 1;;
84    esac
85}
86
87diffs()
88{
89    case "$1" in
90    1) git diff upstream/master include/linux/spi/at86rf230.h
91        git diff upstream/master drivers/net/ieee802154/at86rf230.c
92        ;;
93    2) git diff upstream/master drivers/spi
94        ;;
95    3) git diff f07af316acaa03939e749a3ffe909510e5b7d536 arch/mips
96        ;;
97    esac
98}
99
100intro "$@"
101echo ---
102diffs "$@" | diffstat
103echo
104diffs "$@"

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