2 files changed, 51 insertions, 110 deletions

diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
index 83f31cd0a274..62d17421e48c 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
@@ -5,9 +5,6 @@
 #ifndef __ASM_ARCH_EP93XX_KEYPAD_H
 #define __ASM_ARCH_EP93XX_KEYPAD_H
 
-#define MAX_MATRIX_KEY_ROWS             (8)
-#define MAX_MATRIX_KEY_COLS             (8)
-
 /* flags for the ep93xx_keypad driver */
 #define EP93XX_KEYPAD_DISABLE_3_KEY     (1<<0)  /* disable 3-key reset */
 #define EP93XX_KEYPAD_DIAG_MODE         (1<<1)  /* diagnostic mode */
@@ -18,8 +15,6 @@
 
 /**
  * struct ep93xx_keypad_platform_data - platform specific device structure
- * @matrix_key_rows:            number of rows in the keypad matrix
- * @matrix_key_cols:            number of columns in the keypad matrix
  * @matrix_key_map:             array of keycodes defining the keypad matrix
  * @matrix_key_map_size:        ARRAY_SIZE(matrix_key_map)
  * @debounce:                   debounce start count; terminal count is 0xff
@@ -27,8 +22,6 @@
  * @flags:                      see above
  */
 struct ep93xx_keypad_platform_data {
-        unsigned int    matrix_key_rows;
-        unsigned int    matrix_key_cols;
         unsigned int    *matrix_key_map;
         int             matrix_key_map_size;
         unsigned int    debounce;
@@ -36,7 +29,7 @@ struct ep93xx_keypad_platform_data {
         unsigned int    flags;
 };
 
-/* macro for creating the matrix_key_map table */
-#define KEY(row, col, val)      (((row) << 28) | ((col) << 24) | (val))
+#define EP93XX_MATRIX_ROWS              (8)
+#define EP93XX_MATRIX_COLS              (8)
 
 #endif  /* __ASM_ARCH_EP93XX_KEYPAD_H */
diff --git a/drivers/input/keyboard/ep93xx_keypad.c b/drivers/input/keyboard/ep93xx_keypad.c
index 181d30e3018e..e45740429f7e 100644
--- a/drivers/input/keyboard/ep93xx_keypad.c
+++ b/drivers/input/keyboard/ep93xx_keypad.c
@@ -22,11 +22,11 @@
 
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
-#include <linux/input.h>
 #include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/input/matrix_keypad.h>
 
 #include <mach/hardware.h>
-#include <mach/gpio.h>
 #include <mach/ep93xx_keypad.h>
 
 /*
@@ -60,38 +60,37 @@
 #define KEY_REG_KEY1_MASK       (0x0000003f)
 #define KEY_REG_KEY1_SHIFT      (0)
 
-#define keypad_readl(off)       __raw_readl(keypad->mmio_base + (off))
-#define keypad_writel(v, off)   __raw_writel((v), keypad->mmio_base + (off))
-
-#define MAX_MATRIX_KEY_NUM      (MAX_MATRIX_KEY_ROWS * MAX_MATRIX_KEY_COLS)
+#define EP93XX_MATRIX_SIZE      (EP93XX_MATRIX_ROWS * EP93XX_MATRIX_COLS)
 
 struct ep93xx_keypad {
         struct ep93xx_keypad_platform_data *pdata;
-
-        struct clk *clk;
         struct input_dev *input_dev;
+        struct clk *clk;
+
         void __iomem *mmio_base;
 
-        int irq;
-        int enabled;
+        unsigned int matrix_keycodes[EP93XX_MATRIX_SIZE];
 
         int key1;
         int key2;
 
-        unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM];
+        int irq;
+
+        bool enabled;
 };
 
 static void ep93xx_keypad_build_keycode(struct ep93xx_keypad *keypad)
 {
         struct ep93xx_keypad_platform_data *pdata = keypad->pdata;
         struct input_dev *input_dev = keypad->input_dev;
+        unsigned int *key;
         int i;
 
-        for (i = 0; i < pdata->matrix_key_map_size; i++) {
-                unsigned int key = pdata->matrix_key_map[i];
-                int row = (key >> 28) & 0xf;
-                int col = (key >> 24) & 0xf;
-                int code = key & 0xffffff;
+        key = &pdata->matrix_key_map[0];
+        for (i = 0; i < pdata->matrix_key_map_size; i++, key++) {
+                int row = KEY_ROW(*key);
+                int col = KEY_COL(*key);
+                int code = KEY_VAL(*key);
 
                 keypad->matrix_keycodes[(row << 3) + col] = code;
                 __set_bit(code, input_dev->keybit);
@@ -102,9 +101,11 @@ static irqreturn_t ep93xx_keypad_irq_handler(int irq, void *dev_id)
 {
         struct ep93xx_keypad *keypad = dev_id;
         struct input_dev *input_dev = keypad->input_dev;
-        unsigned int status = keypad_readl(KEY_REG);
+        unsigned int status;
         int keycode, key1, key2;
 
+        status = __raw_readl(keypad->mmio_base + KEY_REG);
+
         keycode = (status & KEY_REG_KEY1_MASK) >> KEY_REG_KEY1_SHIFT;
         key1 = keypad->matrix_keycodes[keycode];
 
@@ -152,7 +153,10 @@ static void ep93xx_keypad_config(struct ep93xx_keypad *keypad)
         struct ep93xx_keypad_platform_data *pdata = keypad->pdata;
         unsigned int val = 0;
 
-        clk_set_rate(keypad->clk, pdata->flags & EP93XX_KEYPAD_KDIV);
+        if (pdata->flags & EP93XX_KEYPAD_KDIV)
+                clk_set_rate(keypad->clk, EP93XX_KEYTCHCLK_DIV4);
+        else
+                clk_set_rate(keypad->clk, EP93XX_KEYTCHCLK_DIV16);
 
         if (pdata->flags & EP93XX_KEYPAD_DISABLE_3_KEY)
                 val |= KEY_INIT_DIS3KY;
@@ -167,7 +171,7 @@ static void ep93xx_keypad_config(struct ep93xx_keypad *keypad)
 
         val |= ((pdata->prescale << KEY_INIT_PRSCL_SHIFT) & KEY_INIT_PRSCL_MASK);
 
-        keypad_writel(val, KEY_INIT);
+        __raw_writel(val, keypad->mmio_base + KEY_INIT);
 }
 
 static int ep93xx_keypad_open(struct input_dev *pdev)
@@ -177,7 +181,7 @@ static int ep93xx_keypad_open(struct input_dev *pdev)
         if (!keypad->enabled) {
                 ep93xx_keypad_config(keypad);
                 clk_enable(keypad->clk);
-                keypad->enabled = 1;
+                keypad->enabled = true;
         }
 
         return 0;
@@ -189,7 +193,7 @@ static void ep93xx_keypad_close(struct input_dev *pdev)
 
         if (keypad->enabled) {
                 clk_disable(keypad->clk);
-                keypad->enabled = 0;
+                keypad->enabled = false;
         }
 }
 
@@ -211,7 +215,7 @@ static int ep93xx_keypad_suspend(struct platform_device *pdev,
 
         if (keypad->enabled) {
                 clk_disable(keypad->clk);
-                keypad->enabled = 0;
+                keypad->enabled = false;
         }
 
         mutex_unlock(&input_dev->mutex);
@@ -236,7 +240,7 @@ static int ep93xx_keypad_resume(struct platform_device *pdev)
                 if (!keypad->enabled) {
                         ep93xx_keypad_config(keypad);
                         clk_enable(keypad->clk);
-                        keypad->enabled = 1;
+                        keypad->enabled = true;
                 }
         }
 
@@ -252,88 +256,56 @@ static int ep93xx_keypad_resume(struct platform_device *pdev)
 static int __devinit ep93xx_keypad_probe(struct platform_device *pdev)
 {
         struct ep93xx_keypad *keypad;
-        struct ep93xx_keypad_platform_data *pdata = pdev->dev.platform_data;
         struct input_dev *input_dev;
         struct resource *res;
-        int irq, err, i, gpio;
-
-        if (!pdata ||
-            !pdata->matrix_key_rows ||
-            pdata->matrix_key_rows > MAX_MATRIX_KEY_ROWS ||
-            !pdata->matrix_key_cols ||
-            pdata->matrix_key_cols > MAX_MATRIX_KEY_COLS) {
-                dev_err(&pdev->dev, "invalid or missing platform data\n");
-                return -EINVAL;
-        }
+        int err;
 
         keypad = kzalloc(sizeof(struct ep93xx_keypad), GFP_KERNEL);
-        if (!keypad) {
-                dev_err(&pdev->dev, "failed to allocate driver data\n");
+        if (!keypad)
                 return -ENOMEM;
-        }
 
-        keypad->pdata = pdata;
+        keypad->pdata = pdev->dev.platform_data;
+        if (!keypad->pdata) {
+                err = -EINVAL;
+                goto failed_free;
+        }
 
-        irq = platform_get_irq(pdev, 0);
-        if (irq < 0) {
-                dev_err(&pdev->dev, "failed to get keypad irq\n");
+        keypad->irq = platform_get_irq(pdev, 0);
+        if (!keypad->irq) {
                 err = -ENXIO;
                 goto failed_free;
         }
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
         if (!res) {
-                dev_err(&pdev->dev, "failed to get I/O memory\n");
                 err = -ENXIO;
                 goto failed_free;
         }
 
         res = request_mem_region(res->start, resource_size(res), pdev->name);
         if (!res) {
-                dev_err(&pdev->dev, "failed to request I/O memory\n");
                 err = -EBUSY;
                 goto failed_free;
         }
 
         keypad->mmio_base = ioremap(res->start, resource_size(res));
         if (keypad->mmio_base == NULL) {
-                dev_err(&pdev->dev, "failed to remap I/O memory\n");
                 err = -ENXIO;
                 goto failed_free_mem;
         }
 
-        /* Request the needed GPIO's */
-        gpio = EP93XX_GPIO_LINE_ROW0;
-        for (i = 0; i < keypad->pdata->matrix_key_rows; i++, gpio++) {
-                err = gpio_request(gpio, pdev->name);
-                if (err) {
-                        dev_err(&pdev->dev, "failed to request gpio-%d\n",
-                                gpio);
-                        goto failed_free_rows;
-                }
-        }
-
-        gpio = EP93XX_GPIO_LINE_COL0;
-        for (i = 0; i < keypad->pdata->matrix_key_cols; i++, gpio++) {
-                err = gpio_request(gpio, pdev->name);
-                if (err) {
-                        dev_err(&pdev->dev, "failed to request gpio-%d\n",
-                                gpio);
-                        goto failed_free_cols;
-                }
-        }
+        err = ep93xx_keypad_acquire_gpio(pdev);
+        if (err)
+                goto failed_free_io;
 
-        keypad->clk = clk_get(&pdev->dev, "key_clk");
+        keypad->clk = clk_get(&pdev->dev, NULL);
         if (IS_ERR(keypad->clk)) {
-                dev_err(&pdev->dev, "failed to get keypad clock\n");
                 err = PTR_ERR(keypad->clk);
-                goto failed_free_io;
+                goto failed_free_gpio;
         }
 
-        /* Create and register the input driver */
         input_dev = input_allocate_device();
         if (!input_dev) {
-                dev_err(&pdev->dev, "failed to allocate input device\n");
                 err = -ENOMEM;
                 goto failed_put_clk;
         }
@@ -358,44 +330,29 @@ static int __devinit ep93xx_keypad_probe(struct platform_device *pdev)
         ep93xx_keypad_build_keycode(keypad);
         platform_set_drvdata(pdev, keypad);
 
-        err = request_irq(irq, ep93xx_keypad_irq_handler, IRQF_DISABLED,
-                                pdev->name, keypad);
-        if (err) {
-                dev_err(&pdev->dev, "failed to request IRQ\n");
+        err = request_irq(keypad->irq, ep93xx_keypad_irq_handler,
+                          IRQF_DISABLED, pdev->name, keypad);
+        if (err)
                 goto failed_free_dev;
-        }
-
-        keypad->irq = irq;
 
-        /* Register the input device */
         err = input_register_device(input_dev);
-        if (err) {
-                dev_err(&pdev->dev, "failed to register input device\n");
+        if (err)
                 goto failed_free_irq;
-        }
 
         device_init_wakeup(&pdev->dev, 1);
 
         return 0;
 
 failed_free_irq:
-        free_irq(irq, pdev);
+        free_irq(keypad->irq, pdev);
         platform_set_drvdata(pdev, NULL);
 failed_free_dev:
         input_free_device(input_dev);
 failed_put_clk:
         clk_put(keypad->clk);
+failed_free_gpio:
+        ep93xx_keypad_release_gpio(pdev);
 failed_free_io:
-        i = keypad->pdata->matrix_key_cols - 1;
-        gpio = EP93XX_GPIO_LINE_COL0 + i;
-failed_free_cols:
-        for ( ; i >= 0; i--, gpio--)
-                gpio_free(gpio);
-        i = keypad->pdata->matrix_key_rows - 1;
-        gpio = EP93XX_GPIO_LINE_ROW0 + i;
-failed_free_rows:
-        for ( ; i >= 0; i--, gpio--)
-                gpio_free(gpio);
         iounmap(keypad->mmio_base);
 failed_free_mem:
         release_mem_region(res->start, resource_size(res));
@@ -408,7 +365,6 @@ static int __devexit ep93xx_keypad_remove(struct platform_device *pdev)
 {
         struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
         struct resource *res;
-        int i, gpio;
 
         free_irq(keypad->irq, pdev);
 
@@ -420,15 +376,7 @@ static int __devexit ep93xx_keypad_remove(struct platform_device *pdev)
 
         input_unregister_device(keypad->input_dev);
 
-        i = keypad->pdata->matrix_key_cols - 1;
-        gpio = EP93XX_GPIO_LINE_COL0 + i;
-        for ( ; i >= 0; i--, gpio--)
-                gpio_free(gpio);
-
-        i = keypad->pdata->matrix_key_rows - 1;
-        gpio = EP93XX_GPIO_LINE_ROW0 + i;
-        for ( ; i >= 0; i--, gpio--)
-                gpio_free(gpio);
+        ep93xx_keypad_release_gpio(pdev);
 
         iounmap(keypad->mmio_base);