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path: root/drivers/i2c/sh_i2c.c
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* i2c: sh_i2c: bugfix: i2c probe command does not workTetsuyuki Kobayashi2014-04-14-1/+3
| | | | | | | | | | | | | | | | | | | | 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>
* i2c: sh_i2c: Update to new CONFIG_SYS_I2C frameworkNobuhiro Iwamatsu2013-11-13-163/+131
| | | | | | | | 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>
* i2c: sh_i2c: Avoid using I2C prior to relocationNobuhiro Iwamatsu2013-10-17-2/+8
| | | | | | | 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>
* Add GPL-2.0+ SPDX-License-Identifier to source filesWolfgang Denk2013-07-24-14/+1
| | | | | | Signed-off-by: Wolfgang Denk <wd@denx.de> [trini: Fixup common/cmd_io.c] Signed-off-by: Tom Rini <trini@ti.com>
* i2c: sh_i2c: use setbits/clrbits macroTetsuyuki Kobayashi2012-10-16-4/+4
| | | | | | | 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>
* i2c: sh_i2c.c: check error in i2c_read and i2c_writeTetsuyuki Kobayashi2012-10-16-18/+32
| | | | | | | | 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>
* i2c: sh_i2c: enable i2c_probeTetsuyuki Kobayashi2012-10-16-5/+27
| | | | | | | | | 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>
* i2c: sh_i2c.c: support I2C2, I2C3 and I2C4Tetsuyuki Kobayashi2012-10-16-0/+15
| | | | | | | 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>
* i2c: sh_i2c.c: adjust for SH73A0Tetsuyuki Kobayashi2012-10-16-0/+4
| | | | | | | | 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>
* i2c: sh_i2c.c: correct BUSY bit define in ICSRTetsuyuki Kobayashi2012-10-16-1/+1
| | | | | | | 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>
* i2c: sh_i2c.c: support iccl and icch extensionTetsuyuki Kobayashi2012-10-16-8/+22
| | | | | | | | 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>
* i2c: sh: Remove irq_wait functionNobuhiro Iwamatsu2012-10-03-16/+0
| | | | | | | 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>
* i2c: sh: Add support I2C for Renesas SHNobuhiro Iwamatsu2011-11-23-0/+292
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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