kernel/linux.git/drivers/rtc/rtc-sd2405al.c, branch v7.2-rc5

rtc: Use named initializers for arrays of i2c_device_data

2026-06-22T00:20:13+00:00

While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify usage of whitespace and commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) Reviewed-by: Tóth János Link: https://patch.msgid.link/20260515154720.406128-2-u.kleine-koenig@baylibre.com Signed-off-by: Alexandre Belloni

rtc: sd2405al: Add I2C address.

2025-10-05T20:51:06+00:00

It is common to include the I2C address of the device in the source file. Signed-off-by: Tóth János Signed-off-by: Alexandre Belloni

rtc: sd2405al: drop needless struct sd2405al::rtc member

2025-03-05T22:08:01+00:00

The memory pointed to by the ::rtc member is managed via devres, and no code in this driver uses it past _probe(). We can drop it from the structure and just use a local temporary variable, reducing runtime memory consumption by a few bytes. Tested-by: Tóth János Signed-off-by: André Draszik Link: https://lore.kernel.org/r/20250304-rtc-cleanups-v2-13-d4689a71668c@linaro.org Signed-off-by: Alexandre Belloni

rtc: Add driver for SD2405AL

2024-09-11T22:33:24+00:00

Add support for the DFRobot SD2405AL I2C RTC Module. Datasheet: https://image.dfrobot.com/image/data/TOY0021/SD2405AL%20datasheet%20(Angelo%20v0.1).pdf Product: https://www.dfrobot.com/product-1600.html To instantiate (assuming device is connected to I2C-1) as root: echo sd2405al 0x32 > /sys/bus/i2c/devices/i2c-1/new_device as user: echo 'sd2405al 0x32' | sudo tee /sys/class/i2c-adapter/i2c-1/new_device The driver is tested with: + hwclock + tools/testing/selftests/rtc/setdate + tools/testing/selftests/rtc/rtctest Reviewed-by: Csókás Bence Signed-off-by: Tóth János Link: https://lore.kernel.org/r/20240830-rtc-sd2405al-v7-1-2f7102621b1d@gmail.com Signed-off-by: Alexandre Belloni