From: Gabriel Somlo <gsomlo@gmail.com>
To: shorne@gmail.com, mholenko@antmicro.com, kgugala@antmicro.com
Cc: linux-kernel@vger.kernel.org,
pczarnecki@internships.antmicro.com, f.kermarrec@gmail.com,
gregkh@linuxfoundation.org, gsomlo@gmail.com
Subject: [PATCH v3 0/3] drivers/soc/litex: support 32-bit subregisters, 64-bit CPUs
Date: Fri, 25 Dec 2020 09:21:17 -0500 [thread overview]
Message-ID: <20201225142120.2018222-1-gsomlo@gmail.com> (raw)
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 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 | 149 +++++++++++++++++++----------
3 files changed, 113 insertions(+), 124 deletions(-)
--
2.26.2
next reply other threads:[~2020-12-25 14:22 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-25 14:21 Gabriel Somlo [this message]
2020-12-25 14:21 ` [PATCH v3 1/3] drivers/soc/litex: move generic accessors to litex.h Gabriel Somlo
2020-12-25 14:21 ` [PATCH v3 2/3] drivers/soc/litex: separate MMIO from subregister offset calculation Gabriel Somlo
2020-12-25 14:21 ` [PATCH v3 3/3] drivers/soc/litex: support 32-bit subregisters, 64-bit CPUs Gabriel Somlo
2020-12-25 19:30 ` Gabriel L. Somlo
2020-12-25 21:47 ` Stafford Horne
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