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powerpc/86xx: Extend GE Fanuc GPIO driver for the SBC310 

This patch adds basic support for the 6 GPIO lines found on GE Fanucs SBC310 to the GE Fanuc GPIO driver.

Signed-off-by: Martyn Welch <martyn.welch@gefanuc.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
This commit is contained in:
Martyn Welch 2009-01-19 11:33:34 +00:00 committed by Kumar Gala
parent d2a82b1298
commit b1dd62f7f1
2 changed files with 33 additions and 7 deletions
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4
arch/powerpc/configs/86xx/gef_sbc310_defconfig
View File

@ -1,7 +1,7 @@
#
# Automatically generated make config: don't edit
# Linux kernel version: 2.6.29-rc3
# Wed Jan 28 23:04:04 2009
# Wed Jan 28 23:05:34 2009
#
# CONFIG_PPC64 is not set
@ -905,7 +905,7 @@ CONFIG_DS1682=y
CONFIG_ARCH_WANT_OPTIONAL_GPIOLIB=y
CONFIG_ARCH_REQUIRE_GPIOLIB=y
CONFIG_GPIOLIB=y
# CONFIG_GPIO_SYSFS is not set
CONFIG_GPIO_SYSFS=y
#
# Memory mapped GPIO expanders:

36
arch/powerpc/platforms/86xx/gef_gpio.c
View File

@ -37,8 +37,6 @@
#define GEF_GPIO_OVERRUN 0x1C
#define GEF_GPIO_MODE 0x20
#define NUM_GPIO 19
static void _gef_gpio_set(void __iomem *reg, unsigned int offset, int value)
{
unsigned int data;
@ -103,10 +101,10 @@ static void gef_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
static int __init gef_gpio_init(void)
{
struct device_node *np;
int retval;
struct of_mm_gpio_chip *gef_gpio_chip;
for_each_compatible_node(np, NULL, "gef,sbc610-gpio") {
int retval;
struct of_mm_gpio_chip *gef_gpio_chip;
pr_debug("%s: Initialising GEF GPIO\n", np->full_name);
@ -120,7 +118,35 @@ static int __init gef_gpio_init(void)
/* Setup pointers to chip functions */
gef_gpio_chip->of_gc.gpio_cells = 2;
gef_gpio_chip->of_gc.gc.ngpio = NUM_GPIO;
gef_gpio_chip->of_gc.gc.ngpio = 19;
gef_gpio_chip->of_gc.gc.direction_input = gef_gpio_dir_in;
gef_gpio_chip->of_gc.gc.direction_output = gef_gpio_dir_out;
gef_gpio_chip->of_gc.gc.get = gef_gpio_get;
gef_gpio_chip->of_gc.gc.set = gef_gpio_set;
/* This function adds a memory mapped GPIO chip */
retval = of_mm_gpiochip_add(np, gef_gpio_chip);
if (retval) {
kfree(gef_gpio_chip);
pr_err("%s: Unable to add GPIO\n", np->full_name);
}
}
for_each_compatible_node(np, NULL, "gef,sbc310-gpio") {
pr_debug("%s: Initialising GEF GPIO\n", np->full_name);
/* Allocate chip structure */
gef_gpio_chip = kzalloc(sizeof(*gef_gpio_chip), GFP_KERNEL);
if (!gef_gpio_chip) {
pr_err("%s: Unable to allocate structure\n",
np->full_name);
continue;
}
/* Setup pointers to chip functions */
gef_gpio_chip->of_gc.gpio_cells = 2;
gef_gpio_chip->of_gc.gc.ngpio = 6;
gef_gpio_chip->of_gc.gc.direction_input = gef_gpio_dir_in;
gef_gpio_chip->of_gc.gc.direction_output = gef_gpio_dir_out;
gef_gpio_chip->of_gc.gc.get = gef_gpio_get;