linux-kernel - [PATCH v2 00/17] serial: max310x: cleanups and improvements

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Message-Id: <20240118152213.2644269-1-hugo@hugovil.com>
Date: Thu, 18 Jan 2024 10:21:56 -0500
From: Hugo Villeneuve <hugo@...ovil.com>
To: gregkh@...uxfoundation.org,
	jirislaby@...nel.org,
	cosmin.tanislav@...log.com,
	andy.shevchenko@...il.com,
	shc_work@...l.ru
Cc: linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	hugo@...ovil.com,
	Hugo Villeneuve <hvilleneuve@...onoff.com>
Subject: [PATCH v2 00/17] serial: max310x: cleanups and improvements

From: Hugo Villeneuve <hvilleneuve@...onoff.com>

Hello,
this patch series brings a few clean-ups and improvements to the max310x
driver.

Some of these changes are based on suggestions for the sc16is7xx driver by
Andy Shevchenko following this discussion:

Link: https://lore.kernel.org/all/CAHp75VebCZckUrNraYQj9k=Mrn2kbYs1Lx26f5-8rKJ3RXeh-w@mail.gmail.com/

The changes have been tested on a custom board using a max14830 in SPI
mode, with an external oscillator (not crystal). Tests included a simple
communication test with a GPS connected to UART0.

They also have been tested by using i2c-stub to simulate the four ports on a
virtual I2C max14830 device, but with obvious limitations as this cannot
simulate all the hardware functions.

Thank you.

Link: [v1] https://lore.kernel.org/all/20240117223856.2303475-1-hugo@hugovil.com

Changes for V2:
- Drop patch "serial: max310x: replace ENOTSUPP with preferred EOPNOTSUPP (checkpatch)"
- Fix cover letter typo
- Add Andy Shevchenko Suggested-by and Reviewed-by tags for selected patches

Hugo Villeneuve (17):
  serial: max310x: fix NULL pointer dereference in I2C instantiation
  serial: max310x: add I2C device table for instantiation from userspace
  serial: max310x: use i2c_get_match_data()
  serial: max310x: use spi_get_device_match_data()
  serial: max310x: fix syntax error in IRQ error message
  serial: max310x: remove holes in struct max310x_devtype
  serial: max310x: add macro for max number of ports
  serial: max310x: use separate regmap name for each port
  serial: max310x: simplify probe() and remove() error handling
  serial: max310x: add explicit return for some switch default cases
  serial: max310x: use dev_err_probe() instead of dev_err()
  serial: max310x: replace hardcoded masks with preferred GENMASK()
  serial: max310x: use common detect function for all variants
  serial: max310x: use common power function for all variants
  serial: max310x: replace bare use of 'unsigned' with 'unsigned int'
    (checkpatch)
  serial: max310x: reformat and improve comments
  serial: max310x: fix indentation

 drivers/tty/serial/max310x.c | 327 ++++++++++++++++++-----------------
 1 file changed, 164 insertions(+), 163 deletions(-)


base-commit: 0c84bea0cabc4e2b98a3de88eeb4ff798931f056
-- 
2.39.2