This series expands on commit 22447a99c97e ("drivers/soc/litex: add LiteX SoC Controller driver"), adding support for handling both 8- and 32-bit LiteX CSR (MMIO) subregisters, on both 32- and 64-bit CPUs.
Notes v4: - improved "eloquence" of some 3/3 commit blurb paragraphs - fixed instance of "disgusting" comment style :) - litex_[get|set]_reg() now using size_t for 'reg_size' argument - slightly tighter shift calculation in litex_set_reg() Notes v3: - split into smaller, more self-explanatory patches - more detailed commit blurb for "main payload" (3/3) patch - eliminate compiler warning on 32-bit architectures Notes v2: - fix typo (s/u32/u64/) in litex_read64(). Notes v1: - LITEX_SUBREG_SIZE now provided by Kconfig. - it's not LITEX_REG_SIZE, but rather LITEX_SUBREG_ALIGN! - move litex_[get|set]_reg() to include/linux/litex.h and mark them as "static inline"; - redo litex_[read|write][8|16|32|64]() using litex_[get|set]_reg() (compiler should produce code as efficient as hardcoded shifts, but also automatically matching LITEX_SUBREG_SIZE). Gabriel Somlo (3): drivers/soc/litex: move generic accessors to litex.h drivers/soc/litex: separate MMIO from subregister offset calculation drivers/soc/litex: support 32-bit subregisters, 64-bit CPUs drivers/soc/litex/Kconfig | 12 +++ drivers/soc/litex/litex_soc_ctrl.c | 76 +-------------- include/linux/litex.h | 151 +++++++++++++++++++---------- 3 files changed, 115 insertions(+), 124 deletions(-) -- 2.26.2