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authorLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 12:15:36 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2012-01-07 12:15:36 -0800
commitfbce1c234feedb5270468aa4b1770c1cab58a960 (patch)
tree7391d7bcce50eab43c750c4055b056ab1892d6b2 /arch/powerpc
parent7affca3537d74365128e477b40c529d6f2fe86c8 (diff)
parentd0ad5e89256c351ddd40167152c24a88efcb0f6d (diff)
Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6
Changes queued in gpio/next for the start of the 3.3 merge window * tag 'gpio-for-linus-20120104' of git://git.secretlab.ca/git/linux-2.6: gpio: Add decode of WM8994 GPIO configuration gpio: Convert GPIO drivers to module_platform_driver gpio: Fix typo in comment in Samsung driver gpio: Explicitly index samsung_gpio_cfgs gpio: Add Linus Walleij as gpio co-maintainer of: Add device tree selftests of: create of_phandle_args to simplify return of phandle parsing data gpio/powerpc: Eliminate duplication of of_get_named_gpio_flags() gpio/microblaze: Eliminate duplication of of_get_named_gpio_flags() gpiolib: output basic details and consolidate gpio device drivers pch_gpio: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor pch_gpio: Support new device LAPIS Semiconductor ML7831 IOH spi/pl022: make the chip deselect handling thread safe spi/pl022: add support for pm_runtime autosuspend spi/pl022: disable the PL022 block when unused spi/pl022: move device disable to workqueue thread spi/pl022: skip default configuration before suspending spi/pl022: fix build warnings spi/pl022: only enable RX interrupts when TX is complete
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/sysdev/qe_lib/gpio.c42
1 files changed, 8 insertions, 34 deletions
diff --git a/arch/powerpc/sysdev/qe_lib/gpio.c b/arch/powerpc/sysdev/qe_lib/gpio.c
index e23f23cf9f5..521e67a49dc 100644
--- a/arch/powerpc/sysdev/qe_lib/gpio.c
+++ b/arch/powerpc/sysdev/qe_lib/gpio.c
@@ -139,14 +139,10 @@ struct qe_pin {
struct qe_pin *qe_pin_request(struct device_node *np, int index)
{
struct qe_pin *qe_pin;
- struct device_node *gpio_np;
struct gpio_chip *gc;
struct of_mm_gpio_chip *mm_gc;
struct qe_gpio_chip *qe_gc;
int err;
- int size;
- const void *gpio_spec;
- const u32 *gpio_cells;
unsigned long flags;
qe_pin = kzalloc(sizeof(*qe_pin), GFP_KERNEL);
@@ -155,45 +151,25 @@ struct qe_pin *qe_pin_request(struct device_node *np, int index)
return ERR_PTR(-ENOMEM);
}
- err = of_parse_phandles_with_args(np, "gpios", "#gpio-cells", index,
- &gpio_np, &gpio_spec);
- if (err) {
- pr_debug("%s: can't parse gpios property\n", __func__);
+ err = of_get_gpio(np, index);
+ if (err < 0)
+ goto err0;
+ gc = gpio_to_chip(err);
+ if (WARN_ON(!gc))
goto err0;
- }
- if (!of_device_is_compatible(gpio_np, "fsl,mpc8323-qe-pario-bank")) {
+ if (!of_device_is_compatible(gc->of_node, "fsl,mpc8323-qe-pario-bank")) {
pr_debug("%s: tried to get a non-qe pin\n", __func__);
err = -EINVAL;
- goto err1;
- }
-
- gc = of_node_to_gpiochip(gpio_np);
- if (!gc) {
- pr_debug("%s: gpio controller %s isn't registered\n",
- np->full_name, gpio_np->full_name);
- err = -ENODEV;
- goto err1;
- }
-
- gpio_cells = of_get_property(gpio_np, "#gpio-cells", &size);
- if (!gpio_cells || size != sizeof(*gpio_cells) ||
- *gpio_cells != gc->of_gpio_n_cells) {
- pr_debug("%s: wrong #gpio-cells for %s\n",
- np->full_name, gpio_np->full_name);
- err = -EINVAL;
- goto err1;
+ goto err0;
}
- err = gc->of_xlate(gc, np, gpio_spec, NULL);
- if (err < 0)
- goto err1;
-
mm_gc = to_of_mm_gpio_chip(gc);
qe_gc = to_qe_gpio_chip(mm_gc);
spin_lock_irqsave(&qe_gc->lock, flags);
+ err -= gc->base;
if (test_and_set_bit(QE_PIN_REQUESTED, &qe_gc->pin_flags[err]) == 0) {
qe_pin->controller = qe_gc;
qe_pin->num = err;
@@ -206,8 +182,6 @@ struct qe_pin *qe_pin_request(struct device_node *np, int index)
if (!err)
return qe_pin;
-err1:
- of_node_put(gpio_np);
err0:
kfree(qe_pin);
pr_debug("%s failed with status %d\n", __func__, err);