[ARM] pxa: update pxa27x keypad driver to use clk support
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/drivers/input/keyboard/pxa27x_keyboard.c b/drivers/input/keyboard/pxa27x_keyboard.c
index ebe5eac..b7061aa 100644
--- a/drivers/input/keyboard/pxa27x_keyboard.c
+++ b/drivers/input/keyboard/pxa27x_keyboard.c
@@ -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 @@
KPREC = 0x7F;
/* Enable unit clock */
- pxa_set_cken(CKEN_KEYPAD, 1);
+ clk_enable(pxakbd_clk);
return 0;
}
@@ -112,7 +116,7 @@
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 @@
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 @@
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 @@
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 @@
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 @@
input_unregister_device(input_dev);
free_irq(IRQ_KEYPAD, pdev);
+ clk_put(pxakbd_clk);
platform_set_drvdata(pdev, NULL);
return 0;