diff options
| author | Rabin Vincent <rabin.vincent@stericsson.com> | 2010-05-06 11:14:17 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2010-05-06 20:17:20 +0100 |
| commit | af7dc2281fd3cedc04cb51bcc0887cdaf65c3fcc (patch) | |
| tree | 5bd51ed12452e283806827e1793415ba6011b757 /arch/arm/plat-nomadik | |
| parent | dc6048c7f97beaf8c5bb97ed772f43330d04727a (diff) | |
| download | linux-af7dc2281fd3cedc04cb51bcc0887cdaf65c3fcc.tar.bz2 | |
ARM: 6104/1: nomadik-gpio: use clk API
Add clocks with appropriate names in platforms that use it, and use the
clk API in nomadik-gpio.
Acked-by: Alessandro Rubini <rubini@unipv.it>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/plat-nomadik')
| -rw-r--r-- | arch/arm/plat-nomadik/gpio.c | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/arch/arm/plat-nomadik/gpio.c b/arch/arm/plat-nomadik/gpio.c index eac9c9a7fbf9..d28900cfa541 100644 --- a/arch/arm/plat-nomadik/gpio.c +++ b/arch/arm/plat-nomadik/gpio.c @@ -15,6 +15,8 @@ #include <linux/device.h> #include <linux/platform_device.h> #include <linux/io.h> +#include <linux/clk.h> +#include <linux/err.h> #include <linux/gpio.h> #include <linux/spinlock.h> #include <linux/interrupt.h> @@ -35,6 +37,7 @@ struct nmk_gpio_chip { struct gpio_chip chip; void __iomem *addr; + struct clk *clk; unsigned int parent_irq; spinlock_t lock; /* Keep track of configured edges */ @@ -310,6 +313,7 @@ static int __init nmk_gpio_probe(struct platform_device *dev) struct nmk_gpio_chip *nmk_chip; struct gpio_chip *chip; struct resource *res; + struct clk *clk; int irq; int ret; @@ -334,15 +338,24 @@ static int __init nmk_gpio_probe(struct platform_device *dev) goto out; } + clk = clk_get(&dev->dev, NULL); + if (IS_ERR(clk)) { + ret = PTR_ERR(clk); + goto out_release; + } + + clk_enable(clk); + nmk_chip = kzalloc(sizeof(*nmk_chip), GFP_KERNEL); if (!nmk_chip) { ret = -ENOMEM; - goto out_release; + goto out_clk; } /* * The virt address in nmk_chip->addr is in the nomadik register space, * so we can simply convert the resource address, without remapping */ + nmk_chip->clk = clk; nmk_chip->addr = io_p2v(res->start); nmk_chip->chip = nmk_gpio_template; nmk_chip->parent_irq = irq; @@ -368,6 +381,9 @@ static int __init nmk_gpio_probe(struct platform_device *dev) out_free: kfree(nmk_chip); +out_clk: + clk_disable(clk); + clk_put(clk); out_release: release_mem_region(res->start, resource_size(res)); out: @@ -385,6 +401,8 @@ static int __exit nmk_gpio_remove(struct platform_device *dev) nmk_chip = platform_get_drvdata(dev); gpiochip_remove(&nmk_chip->chip); + clk_disable(nmk_chip->clk); + clk_put(nmk_chip->clk); kfree(nmk_chip); release_mem_region(res->start, resource_size(res)); return 0; |