kernel/linux.git/arch/sh/include/asm/gpio.h, branch linux-4.4.y

sh: Remove unused sh_pfc_register_info() function

2013-01-25T00:24:30+00:00

All boards use sh_pfc_register() directly, remove the unused sh_pfc_register_info() function. Make the name argument to sh_pfc_register() mandatory as it's now supplied by all callers. Signed-off-by: Laurent Pinchart Acked-by: Linus Walleij Signed-off-by: Simon Horman

sh: Allow GPIO chips to register IRQ mappings.

2010-10-02T18:55:39+00:00

As non-PFC chips are added that may support IRQs, pass through to the generic helper instead of triggering the WARN_ON(). Signed-off-by: Paul Mundt

sh: Break out SuperH PFC code

2009-11-30T03:02:53+00:00

This file breaks out the SuperH PFC code from arch/sh/kernel/gpio.c + arch/sh/include/asm/gpio.h to drivers/sh/pfc.c + include/linux/sh_pfc.h. Similar to the INTC stuff. The non-SuperH specific file location makes it possible to share the code between multiple architectures. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt

sh: use gpiolib

2009-01-27T05:49:10+00:00

This patch updates the SuperH gpio code to make use of gpiolib. The gpiolib callbacks get() and set() are lockless, but we use our own spinlock for the other operations to make sure hardware register bitfield accesses stay atomic. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt

sh: lockless gpio_set_value()

2009-01-27T05:49:10+00:00

This patch optimizes the gpio data register handling for gpio_set_value(). Instead of using the good old spinlock-plus-read-modify-write strategy we now use a shadow register and atomic operations. This improves the bitbanging mmc performance on Migo-R from 26 Kbytes/s to 40 Kbytes/s. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt

sh: make gpio_get/set_value() O(1)

2009-01-27T05:49:09+00:00

This patch modifies the table based SuperH gpio implementation to make use of direct table lookups. With this change the functions gpio_get_value() and gpio_set_value() are O(1). Tested on Migo-R using bitbanging mmc. Performance is improved from 11 KBytes/s to 26 Kbytes/s. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt

sh: asm/gpio.h needs linux/kernel.h for might_sleep()/WARN_ON().

2008-10-23T03:37:20+00:00

Signed-off-by: Paul Mundt

sh: improve pinmux support for single direction pins

2008-10-22T09:34:16+00:00

This patch improves the support for gpio pins that are hard wired to either input or output and lack control register association. A special force enum id is used to allow use without control register but still mark the gpio pin as input or output. Signed-off-by: Magnus Damm Signed-off-by: Paul Mundt

sh: gpio: Stub in dummy GPIO<->IRQ mapping routines.

2008-10-21T08:48:40+00:00

IRQ modes are not presently supported, so stub in dummy definitions for now (taken from linux/gpio.h). Signed-off-by: Paul Mundt

sh: gpio: Include asm-generic/gpio.h for non-gpiolib stubs.

2008-10-21T05:27:05+00:00

Signed-off-by: Paul Mundt