Add driver and MAINTAINERS for HiSilicon I2C controller on Kunpeng SoC. Also provide the devm_*() variants for adding the I2C adapters and a public api to provide I2C frequency mode strings. Change since v3: - split the bus mode string api to I2C as suggested by Andy - simplify the devm variants and change the export format - address the comments of the HiSilicon I2C driver from Andy and Dmitry, thanks! Link: https://lore.kernel.org/linux-i2c/1616411413-7177-1-git-send-email-yangyicong@xxxxxxxxxxxxx/ Change since v2: - handle -EPROBE_DEFER case when get irq number by platform_get_irq() Link: https://lore.kernel.org/linux-i2c/1615296137-14558-1-git-send-email-yangyicong@xxxxxxxxxxxxx/ Change since v1: - fix compile test error on 32bit arch, reported by intel lkp robot: 64 bit division without using kernel wrapper in probe function. Link:https://lore.kernel.org/linux-i2c/1615016946-55670-1-git-send-email-yangyicong@xxxxxxxxxxxxx/ Yicong Yang (4): i2c: core: add managed function for adding i2c adapters i2c: core: add api to provide frequency mode strings i2c: add support for HiSilicon I2C controller MAINTAINERS: Add maintainer for HiSilicon I2C driver MAINTAINERS | 7 + drivers/i2c/busses/Kconfig | 10 + drivers/i2c/busses/Makefile | 1 + drivers/i2c/busses/i2c-hisi.c | 510 ++++++++++++++++++++++++++++++++++++++++++ drivers/i2c/i2c-core-base.c | 26 +++ include/linux/i2c.h | 21 ++ 6 files changed, 575 insertions(+) create mode 100644 drivers/i2c/busses/i2c-hisi.c -- 2.8.1
