[v6,0/8] Cleanup AMBA PL011 driver

Hi,

While adding upstream support to a new platform (Mobileye EyeQ5[1]) that
uses the AMBA PL011 driver, I took some time to look at the PL011
driver and ended up with a few patches that cleanup parts of it. The
line-diff is big mostly because of the checkpatch-fixing commits.

The driver hadn't received any love for quite some time. See commit
messages for more information.

v6 drops [PATCH v5 1/9] as it has been applied by Greg KH. It also fixes
[PATCH v5 2/9] that broke on ARCH=arm ep93xx_defconfig because the header file
is included from assembly.

[1]: https://lore.kernel.org/all/202310050726.GDpZbMDO-lkp@intel.com/T/

Have a nice day,
Théo Lebrun

Signed-off-by: Théo Lebrun <theo.lebrun@bootlin.com>
---
Changes in v6:
- Address kernel test robot failure; amba/serial.h is included from assembly.
- Drop [PATCH v5 1/9] as it has been applied by Greg KH.
- Link to v5: https://lore.kernel.org/r/20231130-mbly-uart-v5-0-6566703a04b5@bootlin.com

Changes in v5:
- Rebase upon v6.7-rc1.
- Add #include <linux/bitfield.h> in include/linux/amba/serial.h.
- Split [PATCH v4 3/6] into 5 manageable commits.
- Link to v4: https://lore.kernel.org/r/20231123-mbly-uart-v4-0-7f913a74ff89@bootlin.com

Changes in v4:
- Fix reverse if logic bug in [PATCH V3 6/6].
- Link to v3: https://lore.kernel.org/r/20231120-mbly-uart-v3-0-07ae35979f1f@bootlin.com

Changes in v3:
- Replace magic constants in linux/amba/serial.h by FIELD_PREP_CONST calls
- Refactor QDF2400 SoC erratum 44 handling out of probe in a new patch
- A nit in "unindent pl011_console_get_options function body"
- Link to v2: https://lore.kernel.org/r/20231116-mbly-uart-v2-0-863f665ce520@bootlin.com

Changes in v2:
- [PATCH 2]: add #include <linux/bits.h> in include/linux/amba/serial.h
  as we use the BIT() macro.
- Move one whitespace cleanup from [PATCH 4/6] to [PATCH v2 3/5] where
  it belongs.
- Drop [PATCH 6/6]: console will never have a word length of 5 or 6.
- Link to v1: https://lore.kernel.org/r/20231026-mbly-uart-v1-0-9258eea297d3@bootlin.com

---
Théo Lebrun (8):
      tty: serial: amba: Use linux/{bits,bitfield}.h macros
      tty: serial: amba-pl011: fix whitespace formatting
      tty: serial: amba-pl011: replace TIOCMBIT macros by static functions
      tty: serial: amba-pl011: avoid quoted string split across lines
      tty: serial: amba-pl011: fix formatting of conditions
      tty: serial: amba-pl011: fix miscellaneous checkpatch warnings
      tty: serial: amba-pl011: unindent pl011_console_get_options function body
      tty: serial: amba-pl011: factor QDF2400 SoC erratum 44 out of probe

 drivers/tty/serial/amba-pl011.c | 261 +++++++++++++++++++++-------------------
 include/linux/amba/serial.h     | 251 +++++++++++++++++++-------------------
 2 files changed, 264 insertions(+), 248 deletions(-)
---
base-commit: bfc1fa3f077a32febb518c1df54e1ee922eee05d
change-id: 20231023-mbly-uart-afcacbb98f8b

Best regards,