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ARM: pxa: add clk support in gpio driver

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Support clk in gpio driver. There's no gpio clock in PXA25x and PXA27x.
So use dummy clk instead. And move the gpio edge initialization into
gpio driver for arch-mmp.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
This commit is contained in:
Haojian Zhuang
2011-10-17 21:26:55 +08:00
committed by Haojian Zhuang
parent be24168f14
commit 389eda15e0
8 changed files with 37 additions and 28 deletions
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26
drivers/gpio/gpio-pxa.c
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@@ -11,6 +11,8 @@
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio-pxa.h>
#include <linux/init.h>
@@ -466,7 +468,8 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
{
struct pxa_gpio_chip *c;
struct resource *res;
int gpio, irq;
struct clk *clk;
int gpio, irq, ret;
int irq0 = 0, irq1 = 0, irq_mux, gpio_offset = 0;
pxa_last_gpio = pxa_gpio_nums();
@@ -489,6 +492,27 @@ static int __devinit pxa_gpio_probe(struct platform_device *pdev)
if (irq0 > 0)
gpio_offset = 2;
clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "Error %ld to get gpio clock\n",
PTR_ERR(clk));
iounmap(gpio_reg_base);
return PTR_ERR(clk);
}
ret = clk_prepare(clk);
if (ret) {
clk_put(clk);
iounmap(gpio_reg_base);
return ret;
}
ret = clk_enable(clk);
if (ret) {
clk_unprepare(clk);
clk_put(clk);
iounmap(gpio_reg_base);
return ret;
}
/* Initialize GPIO chips */
pxa_init_gpio_chip(pxa_last_gpio);