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[ARM] pxa: update pxa27x keypad driver to use clk support

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-08-20 10:19:39 +01:00 committed by Russell King
parent c3cef3f3c0
commit 22d8a73a8b
1 changed files with 20 additions and 5 deletions
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25
drivers/input/keyboard/pxa27x_keyboard.c
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@ -23,6 +23,8 @@
#include <linux/input.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
@ -40,6 +42,8 @@
col/2 == 2 ? KPASMKP2 : KPASMKP3)
#define KPASMKPx_MKC(row, col) (1 << (row + 16 * (col % 2)))
static struct clk *pxakbd_clk;
static irqreturn_t pxakbd_irq_handler(int irq, void *dev_id)
{
struct platform_device *pdev = dev_id;
@ -104,7 +108,7 @@ static int pxakbd_open(struct input_dev *dev)
KPREC = 0x7F;
/* Enable unit clock */
pxa_set_cken(CKEN_KEYPAD, 1);
clk_enable(pxakbd_clk);
return 0;
}
@ -112,7 +116,7 @@ static int pxakbd_open(struct input_dev *dev)
static void pxakbd_close(struct input_dev *dev)
{
/* Disable clock unit */
pxa_set_cken(CKEN_KEYPAD, 0);
clk_disable(pxakbd_clk);
}
#ifdef CONFIG_PM
@ -140,7 +144,8 @@ static int pxakbd_resume(struct platform_device *pdev)
KPREC = pdata->reg_kprec;
/* Enable unit clock */
pxa_set_cken(CKEN_KEYPAD, 1);
clk_disable(pxakbd_clk);
clk_enable(pxakbd_clk);
}
mutex_unlock(&input_dev->mutex);
@ -158,11 +163,18 @@ static int __devinit pxakbd_probe(struct platform_device *pdev)
struct input_dev *input_dev;
int i, row, col, error;
pxakbd_clk = clk_get(&pdev->dev, "KBDCLK");
if (IS_ERR(pxakbd_clk)) {
error = PTR_ERR(pxakbd_clk);
goto err_clk;
}
/* Create and register the input driver. */
input_dev = input_allocate_device();
if (!input_dev) {
printk(KERN_ERR "Cannot request keypad device\n");
return -ENOMEM;
error = -ENOMEM;
goto err_alloc;
}
input_dev->name = DRIVER_NAME;
@ -185,7 +197,6 @@ static int __devinit pxakbd_probe(struct platform_device *pdev)
DRIVER_NAME, pdev);
if (error) {
printk(KERN_ERR "Cannot request keypad IRQ\n");
pxa_set_cken(CKEN_KEYPAD, 0);
goto err_free_dev;
}
@ -217,6 +228,9 @@ static int __devinit pxakbd_probe(struct platform_device *pdev)
free_irq(IRQ_KEYPAD, pdev);
err_free_dev:
input_free_device(input_dev);
err_alloc:
clk_put(pxakbd_clk);
err_clk:
return error;
}
@ -226,6 +240,7 @@ static int __devexit pxakbd_remove(struct platform_device *pdev)
input_unregister_device(input_dev);
free_irq(IRQ_KEYPAD, pdev);
clk_put(pxakbd_clk);
platform_set_drvdata(pdev, NULL);
return 0;