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Author SHA1 Message Date
copilot-swe-agent[bot]
5e04105723 rename i2c mutex
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Co-authored-by: BernardXiong <1241087+BernardXiong@users.noreply.github.com>
 2026-02-04 09:47:00 +08:00
lhxj
7641ef6885 [drivers] Fix OFW bus conflict and prevent duplicate device creation
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Problem:
When enumerating device tree nodes, platform bus and native buses (I2C/SPI)
may create duplicate devices for the same OFW node, causing cross-bus conflicts.
This triggers assertion failure '(dev->bus != new_bus)' in
rt_bus_reload_driver_device() during boot on minimal DM-enabled systems.

Root Cause:
1. Platform bus tries to reload devices that already belong to other buses
   by calling rt_bus_reload_driver_device(dev->bus, dev), which violates
   the API contract (requires dev->bus != new_bus).
2. Native buses (I2C/SPI) do not mark OFW nodes as occupied, so platform
   bus creates duplicate platform devices for I2C/SPI client nodes.

Solution:
1. components/drivers/core/platform_ofw.c: Return RT_EOK when np->dev exists,
   letting the native bus handle device lifecycle instead of cross-bus reload.
2. components/drivers/i2c/dev_i2c_bus.c: Mark i2c_client_np->dev during scan
   to prevent platform bus from duplicating I2C client devices.
3. components/drivers/spi/dev_spi_bus.c: Mark spi_dev_np->dev during scan
   to prevent platform bus from duplicating SPI devices.

Tested on Spacemit K1 RISC-V platform with minimal DM configuration.

Signed-off-by: lhxj <2743257167@qq.com>
 2026-01-20 22:05:28 +08:00
GuEe-GUI
798c84647c [DM/I2C] Update I2C for DM 
1. Add get id match data API.
2. Set I2C device name default before adding to bus.
3. Add Kconfig import for DM.

Signed-off-by: GuEe-GUI <2991707448@qq.com>
 2025-12-04 16:00:13 +08:00
kurisaw
1b76eccb37 [drivers] merge the software i2c driver
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2025-01-08 22:07:03 -05:00
wdfk-prog
f28b84aa1f [components][i2c] 修改为debug等级打印 2024-10-04 18:02:36 -04:00
CXSforHPU
416ec66380 [device] add dev_ prefix for file names 2024-08-23 18:15:09 -04:00
sp-cai
f1832fea24 [components] [drivers ] [Kconfig] 整理 components/drivers 的 Kconfig (#9054) 
整理 components/drivers 的 Kconfig
 2024-06-16 15:43:27 +08:00
LZerro
f190cba0ab [i2c] adjust the timing for I2C initialization 2024-04-29 20:46:12 -04:00
zms123456
4ffcbfef2a [components][drivers]add ofw support i2c 2024-04-07 09:57:38 -04:00
Raman Gopalan
4e656078b6 soft_i2c: Loop iteration variable: Conform to C89 2023-11-26 18:40:02 +08:00
sp-cai
7f6f086601 [components][i2c]增加通用的软件模拟 I2C (#7850) 2023-10-17 11:24:32 -04:00
sp-cai
0ebec472e1 [components][i2c] 优化 controt 接口格式，增加可用命令 (#7806) 
原来 rt_i2c_control 只能执行 RT_I2C_DEV_CTRL_CLK 单一命令，通过此修改可以支持更多可用命令
 2023-07-13 21:57:40 -04:00
Wayne
3291882b38 [i2c] fix the return value of rt_i2c_master_send/recv 
fix the related PR: #7029
 2023-05-09 01:13:02 -04:00
7YZ7
501b22aabe [HUST CSE] Fix many abnormal symbols in annotations and format code 2023-04-17 22:26:23 -04:00
Man, Jianting (Meco)
0275b23638 [i2c] fix the i2c device return error code (#7035) 
* [i2c] fix the i2c device return error code
 2023-03-10 23:44:03 -05:00
Zxy
c8b30bf31a [device]修改i2c读写函数返回类型为rt_ssize_t (#7029) 2023-03-09 23:42:58 -05:00
Meco Man
f58d3c5200 rt_device_write/read return data type as rt_ssize_t 
rt_ssize_t can give negative error code, which follows the unix style correctly
 2023-02-07 21:43:57 -05:00
jaffer
fa1f6c22e5 [fix]修复模拟i2c驱动延时bug 
Signed-off-by: jaffer <jaffer.work@foxmail.com>
 2022-12-05 21:38:02 -05:00
Tangyuxin
a4829b1c00 [fix] Fix simulator compilation warnings (#6438) 
* [fix] Fix simulator compilation warnings

* Update bsp/simulator/rtconfig_project.h

Co-authored-by: Man, Jianting (Meco) <920369182@qq.com>
 2022-09-20 10:31:11 -04:00
dongly
3363586cbb Fix some compilation warning (#5744) 
* Fix some compilation warning

* 补充修正一些数据类型的使用错误

Co-authored-by: Meco Man <920369182@qq.com>
 2022-08-02 12:09:49 -04:00
chenyingchun0312
417efc370f [drivers/i2c] optimize i2c driver framework 2021-12-17 10:25:08 +08:00
Meco Man
df9a23c534 [mutex] use RT_IPC_FLAG_PRIO to replace RT_IPC_FLAG_FIFO 2021-11-17 15:57:15 -05:00
RiceChen
0b9e01cced add I2C bus control api 2021-04-20 00:26:28 +08:00
Meco Man
3c05a4e719 [compoenets] auto & manual formatted 2021-03-08 18:19:04 +08:00
Howard Su
5a184c19b2 Return when i2c transfer 0 messages 
msg->flags is accessed without proper intialized msg variable.
 2021-02-28 16:42:27 +08:00
xieyangrun
54c6e7d145 [dirver/i2c] i2c driver support bus lock, STOP control 2020-09-23 17:17:20 +08:00
a1012112796
ab981a32b5 [Device/I2C] Chang debug message print way to ulog 2019-11-26 07:41:43 +08:00
linch
55b69111dc fix i2c flags bug 2019-09-06 14:44:50 +08:00
tyustli
d8eb0cfc1e fix kernel and framework no cast type error 2019-06-18 20:09:19 +08:00
armink
f9a7b47955 [DeviceDrivers][i2c] Remove the fm24clxx driver in i2c. 2019-05-29 11:17:46 +08:00
Bernard Xiong
2c0640a178 [license] Change license to Apache. 2018-10-14 19:37:18 +08:00
Bernard Xiong
884fb70fe9 [Kernel] Add device ops feature. 2018-06-10 17:59:17 +08:00
ZHANG Jinglong
f1e2dd487e fix an i2c debug print bug 2018-05-03 23:44:56 +08:00
bernard
d7087fdd3b [DeviceDrivers] change cmd type. 
1. Change 'rt_uint8_t' type of cmd to 'int';
2. Add waitqueue;
3. Split device ipc header files;
 2017-10-15 22:56:46 +08:00
Bernard Xiong
c0338d566c Merge pull request #816 from SummerGGift/master 
[Device Drivers] delete an useless %s.
 2017-08-20 11:31:40 +08:00
SummerGift
cfc3b76438 delete a useless %s. 2017-08-19 10:04:04 +08:00
Aubr.Cool
8f4e80669b [Components] driver i2c add fm24clxx drv 2017-07-20 11:55:27 +08:00
Bluebear233
1e6137268d Update i2c_core.c 
修复I2C读写函数，I2C传输失败时返回成功的问题
 2017-02-20 11:32:13 +08:00
bernard
6281ab2bbe [DeviceDriver] Remove i2c_core_lock. 2014-11-01 16:38:53 +08:00
bernard
5397e18c56 [DeviceDrivers] Fix compiling warning. 2014-08-03 14:29:46 +08:00
bernard
a124e7bd22 add initialization debug code 2013-07-24 07:33:48 +08:00
yiyue.fang
621fbdb90c Embedded GPLv2 license in drivers 2013-06-28 00:36:54 +08:00
Ming, Bai
b4de7cce57 Re-normalizing the repo 2013-01-08 22:40:58 +08:00
dzzxzz@gmail.com
68b7e7c481 fixed the coding style in the components/drivers 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2431 bbd45198-f89e-11dd-88c7-29a3b14d5316
 2012-11-22 08:43:40 +00:00
dzzxzz@gmail.com
b5ce8cb195 correct the path for I2C device driver framework 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2181 bbd45198-f89e-11dd-88c7-29a3b14d5316
 2012-06-25 03:50:04 +00:00
wuyangyong
9e3c72a635 fixed a eclipse compiling warning. 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2163 bbd45198-f89e-11dd-88c7-29a3b14d5316
 2012-06-14 12:18:52 +00:00
luohui2320@gmail.com
85169d7fe8 update I2C driver, which now just use small memory 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2159 bbd45198-f89e-11dd-88c7-29a3b14d5316
 2012-06-13 16:55:46 +00:00
luohui2320@gmail.com
55460652d3 ADD I2C driver framework and I2C gpio driver 
git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2128 bbd45198-f89e-11dd-88c7-29a3b14d5316
 2012-05-22 17:32:32 +00:00