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path: root/drivers/input/keyboard/sh_keysc.c
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Diffstat (limited to 'drivers/input/keyboard/sh_keysc.c')
-rw-r--r--drivers/input/keyboard/sh_keysc.c28
1 files changed, 23 insertions, 5 deletions
diff --git a/drivers/input/keyboard/sh_keysc.c b/drivers/input/keyboard/sh_keysc.c
index c600ab7..5c8a1bc 100644
--- a/drivers/input/keyboard/sh_keysc.c
+++ b/drivers/input/keyboard/sh_keysc.c
@@ -18,6 +18,7 @@
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/input.h>
+#include <linux/clk.h>
#include <linux/io.h>
#include <asm/sh_keysc.h>
@@ -39,6 +40,7 @@ static const struct {
struct sh_keysc_priv {
void __iomem *iomem_base;
+ struct clk *clk;
unsigned long last_keys;
struct input_dev *input;
struct sh_keysc_info pdata;
@@ -125,6 +127,7 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev)
struct sh_keysc_info *pdata;
struct resource *res;
struct input_dev *input;
+ char clk_name[8];
int i, k;
int irq, error;
@@ -165,11 +168,19 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev)
goto err1;
}
+ snprintf(clk_name, sizeof(clk_name), "keysc%d", pdev->id);
+ priv->clk = clk_get(&pdev->dev, clk_name);
+ if (IS_ERR(priv->clk)) {
+ dev_err(&pdev->dev, "cannot get clock \"%s\"\n", clk_name);
+ error = PTR_ERR(priv->clk);
+ goto err2;
+ }
+
priv->input = input_allocate_device();
if (!priv->input) {
dev_err(&pdev->dev, "failed to allocate input device\n");
error = -ENOMEM;
- goto err2;
+ goto err3;
}
input = priv->input;
@@ -187,7 +198,7 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev)
error = request_irq(irq, sh_keysc_isr, 0, pdev->name, pdev);
if (error) {
dev_err(&pdev->dev, "failed to request IRQ\n");
- goto err3;
+ goto err4;
}
for (i = 0; i < SH_KEYSC_MAXKEYS; i++) {
@@ -199,18 +210,22 @@ static int __devinit sh_keysc_probe(struct platform_device *pdev)
error = input_register_device(input);
if (error) {
dev_err(&pdev->dev, "failed to register input device\n");
- goto err4;
+ goto err5;
}
+ clk_enable(priv->clk);
+
iowrite16((sh_keysc_mode[pdata->mode].kymd << 8) |
pdata->scan_timing, priv->iomem_base + KYCR1_OFFS);
iowrite16(0, priv->iomem_base + KYOUTDR_OFFS);
iowrite16(KYCR2_IRQ_LEVEL, priv->iomem_base + KYCR2_OFFS);
return 0;
- err4:
+ err5:
free_irq(irq, pdev);
- err3:
+ err4:
input_free_device(input);
+ err3:
+ clk_put(priv->clk);
err2:
iounmap(priv->iomem_base);
err1:
@@ -230,6 +245,9 @@ static int __devexit sh_keysc_remove(struct platform_device *pdev)
free_irq(platform_get_irq(pdev, 0), pdev);
iounmap(priv->iomem_base);
+ clk_disable(priv->clk);
+ clk_put(priv->clk);
+
platform_set_drvdata(pdev, NULL);
kfree(priv);
return 0;
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