linux-kernel - [PATCH 0/8] gpio: omap: cleanup: get rid of system GPIO <-> GPIO offset converseations

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <1426785944-17255-1-git-send-email-grygorii.strashko@linaro.org>
Date:	Thu, 19 Mar 2015 19:25:36 +0200
From:	<grygorii.strashko@...aro.org>
To:	Javier Martinez Canillas <javier@...hile0.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Alexandre Courbot <gnurou@...il.com>, ssantosh@...nel.org,
	Kevin Hilman <khilman@...prootsystems.com>, tony@...mide.com
Cc:	linux-omap@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Grygorii Strashko <grygorii.strashko@...aro.org>
Subject: [PATCH 0/8] gpio: omap: cleanup: get rid of system GPIO <-> GPIO offset converseations

From: Grygorii Strashko <grygorii.strashko@...aro.org>

Now in TI OMAP GPIO driver there are a lot of places where
System GPIO number calculated and then converted to GPIO offset.
What is worse is that in many place such conversation performed twice
or even three times. But actually, we don't need to do that at all, because
- gpiolib always passes GPIO offset to GPIO controller
- OMAP GPIO driver converted to use IRQ domain, so
  struct irq_data->hwirq contains GPIO offset

Hence, it is safe to convert all GPIO OMAP functions to use GPIO
offset instead of system GPIO numbers. Also, this allows to remove
unneeded conversations routines
 #define GPIO_INDEX(bank, gpio)
 #define GPIO_BIT(bank, gpio)
 int omap_irq_to_gpio()

Tested on dra7-evm.

Last two patches have to be tested on OMAP1:
-  gpio: omap: get rid of omap_irq_to_gpio()
-  gpio: omap: get rid of GPIO_INDEX() macro

Based on top of Linux 4.0-rc4 plus patch
'[PATCH 1/2] gpio: omap: irq_shutdown: remove unnecessary call of gpiochip_unlock_as_irq'
http://www.spinics.net/lists/linux-omap/msg116482.html

Grygorii Strashko (8):
  gpio: omap: convert omap_gpio_is_input() to use gpio offset
  gpio: omap: simplify omap_set_gpio_dataout_x()
  gpio: omap: convert debounce functions switch to use gpio offset
  gpio: omap: drop 'gpio' param from omap_gpio_init_irq()
  gpio: omap: convert gpio irq functions to use GPIO offset
  gpio: omap: get rid of GPIO_BIT() macro
  gpio: omap: get rid of omap_irq_to_gpio()
  gpio: omap: get rid of GPIO_INDEX() macro

 drivers/gpio/gpio-omap.c | 130 ++++++++++++++++++++---------------------------
 1 file changed, 55 insertions(+), 75 deletions(-)

-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/