The Spreadtrum platform uses a special set/clear method to update registers' bits, thus this patch set exports a weak function to allow to register a physical regmap bus to support this feature instead of using the MMIO bus, which is not a physical regmap bus.
Any comments are welcome. Thanks. Changes from v3: - Remove vendor specific support from the syscon driver, and export a weak function to support physical regmap bus. Changes from v2: - Fix building errors without enabling CONFIG_ARCH_SPRD. Changes from v1: - Add WARN_ONCE() for seting bits and clearing bits at the same time. - Remove the Spreadtrum SoC syscon driver, instead moving the regmap_bus instance into syscon.c driver. Changes from RFC v2: - Drop regmap change, which was applied by Mark. - Add more information about how to use set/clear. - Add checking to ensure the platform is compatible with using a new physical regmap bus. Changes from RFC v1: - Add new helper to registers a physical regmap bus instead of using the MMIO bus. Baolin Wang (2): mfd: syscon: Support physical regmap bus soc: sprd: Add Spreadtrum special bits updating support drivers/mfd/syscon.c | 9 +++- drivers/soc/Kconfig | 1 + drivers/soc/Makefile | 1 + drivers/soc/sprd/Kconfig | 16 +++++++ drivers/soc/sprd/Makefile | 2 + drivers/soc/sprd/sprd_syscon.c | 86 ++++++++++++++++++++++++++++++++++ include/linux/mfd/syscon.h | 11 +++++ 7 files changed, 125 insertions(+), 1 deletion(-) create mode 100644 drivers/soc/sprd/Kconfig create mode 100644 drivers/soc/sprd/Makefile create mode 100644 drivers/soc/sprd/sprd_syscon.c -- 2.17.1
