linux-kernel - [PATCH v2 0/1] gpio: add driver for Mellanox BlueField 2 GPIO controller

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Message-Id: <cover.1582647809.git.Asmaa@mellanox.com>
Date:   Tue, 25 Feb 2020 11:32:52 -0500
From:   Asmaa Mnebhi <Asmaa@...lanox.com>
To:     bgolaszewski@...libre.com, linus.walleij@...aro.org
Cc:     Asmaa Mnebhi <Asmaa@...lanox.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2 0/1] gpio: add driver for Mellanox BlueField 2 GPIO controller

This patch adds support for the GPIO controller used by Mellanox BlueFIeld
2 SOCs.
This patch addresses the following issues:
1) Split in one gpio_chip per instance (there are 3 instances)
2) Use bgpio_init() for set/clear/get gpio values
3) The direction settings need some special HW lock/unlock to happen and it also uses 2 registers to set the direction instead of one.
So direction_input and direction_output are overriden.

Asmaa Mnebhi (1):
  gpio: add driver for Mellanox BlueField 2 GPIO controller

 drivers/gpio/Kconfig       |   7 +
 drivers/gpio/Makefile      |   1 +
 drivers/gpio/gpio-mlxbf2.c | 345 +++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 353 insertions(+)
 create mode 100644 drivers/gpio/gpio-mlxbf2.c

-- 
2.1.2