Commit graph

15 commits

Author SHA1 Message Date
Tom Rini
83d290c56f SPDX: Convert all of our single license tags to Linux Kernel style
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from.  So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry.  Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.

In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.

This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents.  There's also a few places where I found we did not have a tag
and have introduced one.

Signed-off-by: Tom Rini <trini@konsulko.com>
2018-05-07 09:34:12 -04:00
Simon Glass
2852709676 dm: i2c: Add a note to I2C drivers which need conversion
Maintainers need to be notified more directly of the need to convert these
drivers. Add a note to the top each affected file.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Heiko Schocher <hs@denx.de>
2016-12-05 13:28:03 +01:00
Tetsuyuki Kobayashi
7a65768903 i2c: sh_i2c: bugfix: i2c probe command does not work
This is regression of commit 2035d77d i2c: sh_i2c: Update to new CONFIG_SYS_I2C framework

Before commit 2035d77d, i2c probe command works properly on kzm9g board.

KZM-A9-GT# i2c probe
Valid chip addresses: 0C 12 1D 32 39 3D 40 60

After commit 2035d77d, i2c probe command does not work.

KZM-A9-GT# i2c probe
Valid chip addresses: 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F

sh_i2c_probe() calls sh_i2c_read(), but read length is 0. So acutally it does not read device at all. This patch prepares dummy buffer and read data into it.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2014-04-14 17:41:48 +09:00
Nobuhiro Iwamatsu
2035d77d79 i2c: sh_i2c: Update to new CONFIG_SYS_I2C framework
This updates to new I2C framwwork on sh_i2c.
And this also updates boards(kzm9g and ecovec) that using sh_i2c.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
2013-11-13 06:08:26 +01:00
Nobuhiro Iwamatsu
b55b8eef35 i2c: sh_i2c: Avoid using I2C prior to relocation
If user uses the I2C in before the relocation, board of sh and rmobile
will not start. This will solve this problem.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2013-10-17 07:20:25 +02:00
Wolfgang Denk
1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00
Tetsuyuki Kobayashi
f539094f48 i2c: sh_i2c: use setbits/clrbits macro
Use setbits/clrbits macro when read-modify-write register.

Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2012-10-16 05:47:21 +02:00
Tetsuyuki Kobayashi
0e5fb33cf7 i2c: sh_i2c.c: check error in i2c_read and i2c_write
Before this patch, i2c_{read,write} always returned 0.
Check TACK in i2c_raw_{read,write} so that i2c_{read,write} return non-zero when error.

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:20 +02:00
Tetsuyuki Kobayashi
d042d7121b i2c: sh_i2c: enable i2c_probe
Before this patch i2c_probe() always returned 0 and "i2c probe" command did not work properly.

Modify i2c_set_addr() to check TACK when waiting DTE and make i2c_probe() call this function.

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:20 +02:00
Tetsuyuki Kobayashi
020ec727a6 i2c: sh_i2c.c: support I2C2, I2C3 and I2C4
sh_i2c.c support I2C0 and I2C1. This patch extends it to I2C4.

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:20 +02:00
Tetsuyuki Kobayashi
3ce2703d8f i2c: sh_i2c.c: adjust for SH73A0
Adjust i2c_raw_read() in sh_i2c.c to work for SH73A0.
After this patch, "i2c md" and "i2c mw" command on U-Boot work properly on KZM-A9-GT board.

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:20 +02:00
Tetsuyuki Kobayashi
57d7c80472 i2c: sh_i2c.c: correct BUSY bit define in ICSR
Correct BUSY bit define in ICSR from (1<<3) to (1<<4).

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:19 +02:00
Tetsuyuki Kobayashi
b1af67fe5e i2c: sh_i2c.c: support iccl and icch extension
R-mobile SoC (at least SH73A0) has extension bits to store 8th bit of iccl and icch.
This patch add support for the extentin bits.

Acked-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Tetsuyuki Kobayashi <koba@kmckk.co.jp>
2012-10-16 05:47:19 +02:00
Nobuhiro Iwamatsu
96d1e0933f i2c: sh: Remove irq_wait function
irq_wait function is not referred to from anywhere.

Reported-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
2012-10-03 08:47:17 +02:00
Nobuhiro Iwamatsu
3dab3e0e67 i2c: sh: Add support I2C for Renesas SH
This supports I2C of Renesas SH.
I tested on SH7724.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
CC: Heiko Schocher <hs@denx.de>
2011-11-23 21:22:26 +01:00