diff options
| author | Martyn Welch <martyn.welch@gefanuc.com> | 2009-01-19 11:33:34 +0000 |
|---|---|---|
| committer | Kumar Gala <galak@kernel.crashing.org> | 2009-01-28 23:05:58 -0600 |
| commit | b1dd62f7f108a593abfc4bf425a3dd0885994680 (patch) | |
| tree | 851e3bcaf984f11c2712df020ce5c64ded6bbe22 /arch | |
| parent | d2a82b12989d0531ce93cff0553cdd1c93155d24 (diff) | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/powerpc/configs/86xx/gef_sbc310_defconfig | 4 | ||||
| -rw-r--r-- | arch/powerpc/platforms/86xx/gef_gpio.c | 36 |
2 files changed, 33 insertions, 7 deletions
diff --git a/arch/powerpc/configs/86xx/gef_sbc310_defconfig b/arch/powerpc/configs/86xx/gef_sbc310_defconfig index 8418317289d..bd236b3d915 100644 --- a/arch/powerpc/configs/86xx/gef_sbc310_defconfig +++ b/arch/powerpc/configs/86xx/gef_sbc310_defconfig @@ -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: diff --git a/arch/powerpc/platforms/86xx/gef_gpio.c b/arch/powerpc/platforms/86xx/gef_gpio.c index 85b2800f4cb..b2ea8875adb 100644 --- a/arch/powerpc/platforms/86xx/gef_gpio.c +++ b/arch/powerpc/platforms/86xx/gef_gpio.c @@ -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; |