Input: omap4-keypad - use platform device helpers

Get mem and irq resources using platform helpers

 - platform_get_base
 - platform_get_irq

Signed-off-by: Abraham Arce <x0066660@ti.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

1 files changed, 35 insertions, 5 deletions

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
index 975f8bbcc69b..788169d3e7c2 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -148,7 +148,10 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev)
         const struct omap4_keypad_platform_data *pdata;
         struct omap4_keypad *keypad_data;
         struct input_dev *input_dev;
+        struct resource *res;
+        resource_size_t size;
         unsigned int row_shift, max_keys;
+        int irq;
         int error;
 
         /* platform data */
@@ -158,12 +161,14 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev)
                 return -EINVAL;
         }
 
-        if (!pdata->base) {
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!res) {
                 dev_err(&pdev->dev, "no base address specified\n");
                 return -EINVAL;
         }
 
-        if (!pdata->irq) {
+        irq = platform_get_irq(pdev, 0);
+        if (!irq) {
                 dev_err(&pdev->dev, "no keyboard irq assigned\n");
                 return -EINVAL;
         }
@@ -184,9 +189,23 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev)
                 return -ENOMEM;
         }
 
-        keypad_data->base = pdata->base;
-        keypad_data->irq = pdata->irq;
+        size = resource_size(res);
+
+        res = request_mem_region(res->start, size, pdev->name);
+        if (!res) {
+                dev_err(&pdev->dev, "can't request mem region\n");
+                error = -EBUSY;
+                goto err_free_keypad;
+        }
 
+        keypad_data->base = ioremap(res->start, resource_size(res));
+        if (!keypad_data->base) {
+                dev_err(&pdev->dev, "can't ioremap mem resource\n");
+                error = -ENOMEM;
+                goto err_release_mem;
+        }
+
+        keypad_data->irq = irq;
         keypad_data->row_shift = row_shift;
         keypad_data->rows = pdata->rows;
         keypad_data->cols = pdata->cols;
@@ -195,7 +214,7 @@ static int __devinit omap4_keypad_probe(struct platform_device *pdev)
         keypad_data->input = input_dev = input_allocate_device();
         if (!input_dev) {
                 error = -ENOMEM;
-                goto err_free_keypad;
+                goto err_unmap;
         }
 
         input_dev->name = pdev->name;
@@ -243,6 +262,10 @@ err_free_irq:
         free_irq(keypad_data->irq, keypad_data);
 err_free_input:
         input_free_device(input_dev);
+err_unmap:
+        iounmap(keypad_data->base);
+err_release_mem:
+        release_mem_region(res->start, size);
 err_free_keypad:
         kfree(keypad_data);
         return error;
@@ -251,9 +274,16 @@ err_free_keypad:
 static int __devexit omap4_keypad_remove(struct platform_device *pdev)
 {
         struct omap4_keypad *keypad_data = platform_get_drvdata(pdev);
+        struct resource *res;
 
         free_irq(keypad_data->irq, keypad_data);
         input_unregister_device(keypad_data->input);
+
+        iounmap(keypad_data->base);
+
+        res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        release_mem_region(res->start, resource_size(res));
+
         kfree(keypad_data);
         platform_set_drvdata(pdev, NULL);