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path: root/drivers/i2c/sh_i2c.c
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2018-05-07SPDX: Convert all of our single license tags to Linux Kernel styleTom Rini
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>
2016-12-05dm: i2c: Add a note to I2C drivers which need conversionSimon Glass
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>
2014-04-14i2c: sh_i2c: bugfix: i2c probe command does not workTetsuyuki Kobayashi
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>
2013-11-13i2c: sh_i2c: Update to new CONFIG_SYS_I2C frameworkNobuhiro Iwamatsu
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>
2013-10-17i2c: sh_i2c: Avoid using I2C prior to relocationNobuhiro Iwamatsu
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>
2013-07-24Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk
Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
2012-10-16i2c: sh_i2c: use setbits/clrbits macroTetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c.c: check error in i2c_read and i2c_writeTetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c: enable i2c_probeTetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c.c: support I2C2, I2C3 and I2C4Tetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c.c: adjust for SH73A0Tetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c.c: correct BUSY bit define in ICSRTetsuyuki Kobayashi
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>
2012-10-16i2c: sh_i2c.c: support iccl and icch extensionTetsuyuki Kobayashi
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>
2012-10-03i2c: sh: Remove irq_wait functionNobuhiro Iwamatsu
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>
2011-11-23i2c: sh: Add support I2C for Renesas SHNobuhiro Iwamatsu
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>
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