linux/drivers/i3c, branch v6.17

i3c: add missing include to internal header

2025-07-31T00:25:17Z

LKP found a random config which failed to build because IO accessors were not defined: In file included from drivers/i3c/master.c:21: drivers/i3c/internals.h: In function 'i3c_writel_fifo': >> drivers/i3c/internals.h:35:9: error: implicit declaration of function 'writesl' [-Werror=implicit-function-declaration] Add the proper header to where the IO accessors are used. Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202507150208.BZDzzJ5E-lkp@intel.com/ Signed-off-by: Wolfram Sang Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250717120046.9022-2-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

i3c: dw: Remove redundant pm_runtime_mark_last_busy() calls

2025-07-30T23:37:56Z

pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(), pm_runtime_autosuspend() and pm_request_autosuspend() now include a call to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to pm_runtime_mark_last_busy(). Signed-off-by: Sakari Ailus Link: https://lore.kernel.org/r/20250704075417.3218742-1-sakari.ailus@linux.intel.com Signed-off-by: Alexandre Belloni

i3c: master: svc: Remove redundant pm_runtime_mark_last_busy() calls

2025-07-30T23:37:56Z

pm_runtime_put_autosuspend(), pm_runtime_put_sync_autosuspend(), pm_runtime_autosuspend() and pm_request_autosuspend() now include a call to pm_runtime_mark_last_busy(). Remove the now-reduntant explicit call to pm_runtime_mark_last_busy(). Signed-off-by: Sakari Ailus Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250704075416.3218647-1-sakari.ailus@linux.intel.com Signed-off-by: Alexandre Belloni

i3c: master: svc: Fix npcm845 FIFO_EMPTY quirk

2025-07-30T23:36:16Z

In a private write transfer, the driver pre-fills the FIFO to work around the FIFO_EMPTY quirk. However, if an IBIWON event occurs, the hardware emits a NACK and the driver initiates a retry. During the retry, driver attempts to pre-fill the FIFO again if there is remaining data, but since the FIFO is already full, this leads to data loss. Check available space in FIFO to prevent overflow. Fixes: 4008a74e0f9b ("i3c: master: svc: Fix npcm845 FIFO empty issue") Signed-off-by: Stanley Chu Link: https://lore.kernel.org/r/20250730003719.1825593-1-yschu@nuvoton.com Signed-off-by: Alexandre Belloni

i3c: master: Add basic driver for the Renesas I3C controller

2025-07-30T23:33:20Z

Add a basic driver for the I3C controller found in Renesas RZ/G3S and G3E SoCs. Support I3C pure busses (tested with two targets) and mixed busses (two I3C devices plus various I2C targets). DAA and communication with temperature sensors worked reliably at various speeds. Missing features such as IBI, HotJoin, and target mode will be added incrementally. Signed-off-by: Wolfram Sang Tested-by: Tommaso Merciai Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250724094146.6443-5-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

i3c: Standardize defines for specification parameters

2025-07-30T23:33:20Z

Align existing defines to follow the consistent pattern: I3C_BUS___. Prepare the codebase for adding new parameters and help avoid duplication. Signed-off-by: Wolfram Sang Tested-by: Tommaso Merciai Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250724094146.6443-2-wsa+renesas@sang-engineering.com Signed-off-by: Alexandre Belloni

i3c: master: cdns: Simplify handling clocks in probe()

2025-07-30T23:24:25Z

The two clocks, driver is getting, are not being disabled/re-enabled during runtime of the device. Eliminate one variable in state struct, all error paths and a lot of code from probe() and remove() by using devm_clk_get_enabled(). Signed-off-by: Krzysztof Kozlowski Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250713152411.74917-2-krzysztof.kozlowski@linaro.org Signed-off-by: Alexandre Belloni

i3c: Fix i3c_device_do_priv_xfers() kernel-doc indentation

2025-07-30T23:23:12Z

Sphinx reports indentation warning on i3c_device_do_priv_xfers() return value list: Documentation/driver-api/i3c/device-driver-api:9: ./drivers/i3c/device.c:31: ERROR: Unexpected indentation. [docutils] Format the list as bullet list to fix the warning. Signed-off-by: Bagas Sanjaya Reviewed-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250702040424.18577-1-bagasdotme@gmail.com Signed-off-by: Alexandre Belloni

i3c: master: dw: Use i3c_writel_fifo() and i3c_readl_fifo()

2025-07-30T23:21:10Z

Use common inline i3c_writel_fifo()/i3c_readl_fifo() methods to simplify code since the FIFO of controller is a 32bit width. Signed-off-by: Jorge Marques Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250624-i3c-writesl-readsl-v3-3-63ccf0870f01@analog.com Signed-off-by: Alexandre Belloni

i3c: master: cdns: Use i3c_writel_fifo() and i3c_readl_fifo()

2025-07-30T23:21:10Z

Use common inline i3c_writel_fifo()/i3c_readl_fifo() methods to simplify code since the FIFO of controller is a 32bit width. Signed-off-by: Jorge Marques Reviewed-by: Frank Li Link: https://lore.kernel.org/r/20250624-i3c-writesl-readsl-v3-2-63ccf0870f01@analog.com Signed-off-by: Alexandre Belloni