New input/keyboard driver for the Cirrus Logic EP93xx keypad matrix
peripheral.
This driver is based on the pxa27x_keypad driver and provides support
for the 8x8 matrix keypad peripheral in the EP93xx ARM SOC.
Signed-off-by: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
---
diff --git a/arch/arm/mach-ep93xx/clock.c b/arch/arm/mach-ep93xx/clock.c
index 9604928..b2f604e 100644
--- a/arch/arm/mach-ep93xx/clock.c
+++ b/arch/arm/mach-ep93xx/clock.c
@@ -24,10 +24,15 @@
struct clk {
unsigned long rate;
int users;
+ int sw_locked;
u32 enable_reg;
u32 enable_mask;
+
+ int (*set_rate)(struct clk *clk, unsigned long
rate);
};
+static int set_keyclk(struct clk *clk, unsigned long rate);
+
static struct clk clk_uart = {
.rate = 14745600,
};
@@ -40,6 +45,12 @@ static struct clk clk_usb_host = {
.enable_reg = EP93XX_SYSCON_CLOCK_CONTROL,
.enable_mask = EP93XX_SYSCON_CLOCK_USH_EN,
};
+static struct clk clk_keypad = {
+ .sw_locked = 1,
+ .enable_reg = EP93XX_SYSCON_KEY_TCH_CLOCK_DIV,
+ .enable_mask = EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_KEN,
+ .set_rate = set_keyclk,
+};
#define INIT_CK(dev,con,ck) \
{ .dev_id = dev, .con_id = con, .clk = ck }
@@ -54,6 +65,7 @@ static struct clk_lookup clocks[] = {
INIT_CK(NULL, "pclk", &clk_p),
INIT_CK(NULL, "pll2", &clk_pll2),
INIT_CK(NULL, "usb_host", &clk_usb_host),
+ INIT_CK("ep93xx-keypad", NULL, &clk_keypad),
};
@@ -63,6 +75,8 @@ int clk_enable(struct clk *clk)
u32 value;
value = __raw_readl(clk->enable_reg);
+ if (clk->sw_locked)
+ __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(value | clk->enable_mask, clk->enable_reg);
}
@@ -76,6 +90,8 @@ void clk_disable(struct clk *clk)
u32 value;
value = __raw_readl(clk->enable_reg);
+ if (clk->sw_locked)
+ __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
__raw_writel(value & ~clk->enable_mask,
clk->enable_reg);
}
}
@@ -87,6 +103,37 @@ unsigned long clk_get_rate(struct clk *clk)
}
EXPORT_SYMBOL(clk_get_rate);
+static int set_keyclk(struct clk *clk, unsigned long rate)
+{
+ u32 value;
+
+ value = __raw_readl(EP93XX_SYSCON_KEY_TCH_CLOCK_DIV);
+
+ if (rate) {
+ /* Any rate > 0 will result in a 1/4 external clock rate
*/
+ value |= EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_KDIV;
+ rate = EP93XX_EXT_CLK_RATE / 4;
+ } else {
+ /* A rate of 0 will result in a 1/16 external clock rate
*/
+ value &= ~EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_KDIV;
+ rate = EP93XX_EXT_CLK_RATE / 16;
+ }
+
+ __raw_writel(0xaa, EP93XX_SYSCON_SWLOCK);
+ __raw_writel(value, EP93XX_SYSCON_KEY_TCH_CLOCK_DIV);
+
+ clk->rate = rate;
+
+ return 0;
+}
+int clk_set_rate(struct clk *clk, unsigned long rate)
+{
+ if (clk->set_rate)
+ return clk->set_rate(clk, rate);
+
+ return -EINVAL;
+}
+EXPORT_SYMBOL(clk_set_rate);
static char fclk_divisors[] = { 1, 2, 4, 8, 16, 1, 1, 1 };
static char hclk_divisors[] = { 1, 2, 4, 5, 6, 8, 16, 32 };
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
index 22d6c9a..5664ec7 100644
--- a/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx-regs.h
@@ -139,6 +139,7 @@
#define EP93XX_UART3_PHYS_BASE (EP93XX_APB_PHYS_BASE +
0x000e0000)
#define EP93XX_KEY_MATRIX_BASE (EP93XX_APB_VIRT_BASE +
0x000f0000)
+#define EP93XX_KEY_MATRIX_PHYS_BASE (EP93XX_APB_PHYS_BASE +
0x000f0000)
#define EP93XX_ADC_BASE (EP93XX_APB_VIRT_BASE +
0x00100000)
#define EP93XX_TOUCHSCREEN_BASE (EP93XX_APB_VIRT_BASE +
0x00100000)
@@ -159,6 +160,11 @@
#define EP93XX_SYSCON_CLOCK_SET2 EP93XX_SYSCON_REG(0x24)
#define EP93XX_SYSCON_DEVICE_CONFIG EP93XX_SYSCON_REG(0x80)
#define EP93XX_SYSCON_DEVICE_CONFIG_CRUNCH_ENABLE 0x00800000
+#define EP93XX_SYSCON_KEY_TCH_CLOCK_DIV EP93XX_SYSCON_REG(0x90)
+#define EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_TSEN (1<<31)
+#define EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_ADIV (1<<16)
+#define EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_KEN (1<<15)
+#define EP93XX_SYSCON_KEY_TCH_CLOCK_DIV_KDIV (1<<0)
#define EP93XX_SYSCON_SWLOCK EP93XX_SYSCON_REG(0xc0)
#define EP93XX_WATCHDOG_BASE (EP93XX_APB_VIRT_BASE +
0x00140000)
diff --git a/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
new file mode 100644
index 0000000..3dd15d5
--- /dev/null
+++ b/arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
@@ -0,0 +1,35 @@
+/*
+ * arch/arm/mach-ep93xx/include/mach/ep93xx_keypad.h
+ */
+
+#ifndef __ASM_ARCH_EP93XX_KEYPAD_H
+#define __ASM_ARCH_EP93XX_KEYPAD_H
+
+/* 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 */
+#define EP93XX_KEYPAD_BACK_DRIVE (1<<2) /* back driving mode */
+#define EP93XX_KEYPAD_TEST_MODE (1<<3) /* scan only
column 0 */
+#define EP93XX_KEYPAD_KDIV (1<<4) /* 1/4 clock or 1/16
clock */
+#define EP93XX_KEYPAD_AUTOREPEAT (1<<5) /* enable key autorepeat
*/
+
+/**
+ * struct ep93xx_keypad_platform_data - platform specific device
structure
+ * @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
+ * @prescale: row/column counter pre-scaler load value
+ * @flags: see above
+ */
+struct ep93xx_keypad_platform_data {
+ unsigned int *matrix_key_map;
+ int matrix_key_map_size;
+ unsigned int debounce;
+ unsigned int prescale;
+ unsigned int flags;
+};
+
+/* macro for creating the matrix_key_map table */
+#define KEY(row, col, val) (((row) << 28) | ((col) << 24) | (val))
+
+#endif /* __ASM_ARCH_EP93XX_KEYPAD_H */
diff --git a/drivers/input/keyboard/Kconfig
b/drivers/input/keyboard/Kconfig
index 3556168..6153a4f 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -332,4 +332,14 @@ config KEYBOARD_SH_KEYSC
To compile this driver as a module, choose M here: the
module will be called sh_keysc.
+
+config KEYBOARD_EP93XX
+ tristate "EP93xx Matrix Keypad support"
+ depends on ARCH_EP93XX
+ help
+ Say Y here to enable the matrix keypad on the Cirrus EP93XX.
+
+ To compile this driver as a module, choose M here: the
+ module will be called ep93xx_keypad.
+
endif
diff --git a/drivers/input/keyboard/Makefile
b/drivers/input/keyboard/Makefile
index 36351e1..13ba9c9 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -28,3 +28,4 @@ obj-$(CONFIG_KEYBOARD_HP7XX) +=
jornada720_kbd.o
obj-$(CONFIG_KEYBOARD_MAPLE) += maple_keyb.o
obj-$(CONFIG_KEYBOARD_BFIN) += bf54x-keys.o
obj-$(CONFIG_KEYBOARD_SH_KEYSC) += sh_keysc.o
+obj-$(CONFIG_KEYBOARD_EP93XX) += ep93xx_keypad.o
diff --git a/drivers/input/keyboard/ep93xx_keypad.c
b/drivers/input/keyboard/ep93xx_keypad.c
new file mode 100644
index 0000000..6e82049
--- /dev/null
+++ b/drivers/input/keyboard/ep93xx_keypad.c
@@ -0,0 +1,455 @@
+/*
+ * Driver for the Cirrus EP93xx matrix keypad controller.
+ *
+ * Copyright (c) 2008 H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
+ *
+ * Based on the pxa27x matrix keypad controller by Rodolfo Giometti.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * NOTE:
+ *
+ * The 3-key reset is triggered by pressing the 3 keys in
+ * Row 0, Columns 2, 4, and 7 at the same time. This action can
+ * be disabled by setting the EP93XX_KEYPAD_DISABLE_3_KEY flag.
+ *
+ * Normal operation for the matrix does not autorepeat the key press.
+ * This action can be enabled by setting the EP93XX_KEYPAD_AUTOREPEAT
+ * flag.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/input.h>
+#include <linux/clk.h>
+
+#include <mach/hardware.h>
+#include <mach/gpio.h>
+#include <mach/ep93xx_keypad.h>
+
+/*
+ * Keypad Interface Register offsets
+ */
+#define KEY_INIT 0x00 /* Key Scan Initialization
register */
+#define KEY_DIAG 0x04 /* Key Scan Diagnostic register
*/
+#define KEY_REG 0x08 /* Key Value Capture
register */
+
+struct ep93xx_keypad {
+ struct ep93xx_keypad_platform_data *pdata;
+
+ struct clk *clk;
+ struct input_dev *input_dev;
+ void __iomem *mmio_base;
+
+ int irq;
+ int enabled;
+
+ int key1;
+ int key2;
+
+ unsigned int matrix_keycodes[8*8];
+};
+
+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;
+
+ key = &pdata->matrix_key_map[0];
+ for (i = 0; i < pdata->matrix_key_map_size; i++, key++) {
+ int row = ((*key) >> 28) & 0xf;
+ int col = ((*key) >> 24) & 0xf;
+ int code = (*key) & 0xffffff;
+
+ keypad->matrix_keycodes[(row << 3) + col] = code;
+ set_bit(code, input_dev->keybit);
+ }
+}
+
+static void ep93xx_keypad_handle_key(struct ep93xx_keypad *keypad,
+ int key, int press)
+{
+ struct input_dev *input_dev = keypad->input_dev;
+
+ if (key) {
+ input_report_key(input_dev, key, press);
+ input_sync(input_dev);
+ }
+}
+
+static void ep93xx_keypad_key1_release(struct ep93xx_keypad *keypad)
+{
+ ep93xx_keypad_handle_key(keypad, keypad->key1, 0);
+ keypad->key1 = 0;
+}
+
+static void ep93xx_keypad_key2_release(struct ep93xx_keypad *keypad)
+{
+ ep93xx_keypad_handle_key(keypad, keypad->key2, 0);
+ keypad->key2 = 0;
+}
+
+static void ep93xx_keypad_key1_press(struct ep93xx_keypad *keypad, int
key)
+{
+ ep93xx_keypad_handle_key(keypad, key, 1);
+ keypad->key1 = key;
+}
+
+static void ep93xx_keypad_key2_press(struct ep93xx_keypad *keypad, int
key)
+{
+ ep93xx_keypad_handle_key(keypad, key, 1);
+ keypad->key2 = key;
+}
+
+static void ep93xx_keypad_scan_1key(struct ep93xx_keypad *keypad, int
key)
+{
+ if (keypad->key1 && key != keypad->key1)
+ ep93xx_keypad_key1_release(keypad);
+
+ if (keypad->key2 && key != keypad->key2)
+ ep93xx_keypad_key2_release(keypad);
+
+ ep93xx_keypad_key1_press(keypad, key);
+}
+
+static void ep93xx_keypad_scan_2keys(struct ep93xx_keypad *keypad,
+ int key1, int key2)
+{
+ if (keypad->key1 && key1 != keypad->key1 && key2 !=
keypad->key1)
+ ep93xx_keypad_key1_release(keypad);
+
+ if (keypad->key2 && key1 != keypad->key2 && key2 !=
keypad->key2)
+ ep93xx_keypad_key2_release(keypad);
+
+ if (key1 != keypad->key1 && key1 != keypad->key2)
+ ep93xx_keypad_key1_press(keypad, key1);
+
+ if (key2 != keypad->key2 && key2 != keypad->key2)
+ ep93xx_keypad_key2_press(keypad, key2);
+}
+
+static irqreturn_t ep93xx_keypad_irq_handler(int irq, void *dev_id)
+{
+ struct ep93xx_keypad *keypad = dev_id;
+ unsigned int status;
+ int keycode, key1, key2;
+
+ status = __raw_readl(keypad->mmio_base + KEY_REG);
+
+ keycode = (status & 0x0000003f) >> 0;
+ key1 = keypad->matrix_keycodes[keycode];
+
+ keycode = (status & 0x00000fc0) >> 6;
+ key2 = keypad->matrix_keycodes[keycode];
+
+ if (status & (1<<13)) {
+ ep93xx_keypad_scan_2keys(keypad, key1, key2);
+ } else if (status & (1<<12)) {
+ ep93xx_keypad_scan_1key(keypad, key1);
+ } else {
+ if (keypad->key1)
+ ep93xx_keypad_key1_release(keypad);
+ if (keypad->key2)
+ ep93xx_keypad_key2_release(keypad);
+ }
+
+ return IRQ_HANDLED;
+}
+
+static void ep93xx_keypad_config(struct ep93xx_keypad *keypad)
+{
+ struct ep93xx_keypad_platform_data *pdata = keypad->pdata;
+ unsigned int val = 0;
+
+ /*
+ * Set the peripheral clock rate based on the passed platform
data.
+ * EP93XX_KEYPAD_KDIV == 0 -> clock = 1/16 external clock rate
+ * EP93XX_KEYPAD_KDIV == 1 -> clock = 1/4 external clock rate
+ */
+ clk_set_rate(keypad->clk, pdata->flags & EP93XX_KEYPAD_KDIV);
+
+ /*
+ * Set the Key Scan Initialization Register
+ * based on the the passed platform data.
+ */
+ if (pdata->flags & EP93XX_KEYPAD_DISABLE_3_KEY)
+ val |= (1<<15);
+ if (pdata->flags & EP93XX_KEYPAD_DIAG_MODE)
+ val |= (1<<14);
+ if (pdata->flags & EP93XX_KEYPAD_BACK_DRIVE)
+ val |= (1<<13);
+ if (pdata->flags & EP93XX_KEYPAD_TEST_MODE)
+ val |= (1<<12);
+ val |= ((pdata->debounce << 16) & 0x00ff0000);
+ val |= ((pdata->prescale << 0) & 0x000003ff);
+
+ __raw_writel(val, keypad->mmio_base + KEY_INIT);
+}
+
+static int ep93xx_keypad_open(struct input_dev *pdev)
+{
+ struct ep93xx_keypad *keypad = input_get_drvdata(pdev);
+
+ if (!keypad->enabled) {
+ ep93xx_keypad_config(keypad);
+ clk_enable(keypad->clk);
+ keypad->enabled = 1;
+ }
+
+ return 0;
+}
+
+static void ep93xx_keypad_close(struct input_dev *pdev)
+{
+ struct ep93xx_keypad *keypad = input_get_drvdata(pdev);
+
+ if (keypad->enabled) {
+ clk_disable(keypad->clk);
+ keypad->enabled = 0;
+ }
+}
+
+
+#ifdef CONFIG_PM
+/*
+ * NOTE: I don't know if this is correct, or will work on the ep93xx.
+ *
+ * None of the existing ep93xx drivers have power management support.
+ * But, this is basically what the pxa27x_keypad driver does.
+ */
+static int ep93xx_keypad_suspend(struct platform_device *pdev,
+ pm_message_t state)
+{
+ struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
+
+ if (keypad->enabled) {
+ clk_disable(keypad->clk);
+ keypad->enabled = 0;
+ }
+
+ if (device_may_wakeup(&pdev->dev))
+ enable_irq_wake(keypad->irq);
+
+ return 0;
+}
+
+static int ep93xx_keypad_resume(struct platform_device *pdev)
+{
+ struct ep93xx_keypad *keypad = platform_get_drvdata(pdev);
+ struct input_dev *input_dev = keypad->input_dev;
+
+ if (device_may_wakeup(&pdev->dev))
+ disable_irq_wake(keypad->irq);
+
+ mutex_lock(&input_dev->mutex);
+
+ if (input_dev->users) {
+ if (!keypad->enabled) {
+ ep93xx_keypad_config(keypad);
+ clk_enable(keypad->clk);
+ keypad->enabled = 1;
+ }
+ }
+
+ mutex_unlock(&input_dev->mutex);
+
+ return 0;
+}
+#else /* !CONFIG_PM */
+#define ep93xx_keypad_suspend NULL
+#define ep93xx_keypad_resume NULL
+#endif /* !CONFIG_PM */
+
+static int __devinit ep93xx_keypad_probe(struct platform_device *pdev)
+{
+ struct ep93xx_keypad *keypad;
+ struct input_dev *input_dev;
+ struct resource *res;
+ int irq, err, i, gpio;
+
+ keypad = kzalloc(sizeof(struct ep93xx_keypad), GFP_KERNEL);
+ if (keypad == NULL)
+ return -ENOMEM;
+
+ keypad->pdata = pdev->dev.platform_data;
+ if (keypad->pdata == NULL) {
+ err = -EINVAL;
+ goto failed_free;
+ }
+
+ irq = platform_get_irq(pdev, 0);
+ if (irq < 0) {
+ err = -ENXIO;
+ goto failed_free;
+ }
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ err = -ENXIO;
+ goto failed_free;
+ }
+
+ res = request_mem_region(res->start, resource_size(res),
pdev->name);
+ if (res == NULL) {
+ err = -EBUSY;
+ goto failed_free;
+ }
+
+ keypad->mmio_base = ioremap(res->start, resource_size(res));
+ if (keypad->mmio_base == NULL) {
+ err = -ENXIO;
+ goto failed_free_mem;
+ }
+
+ /* Request the needed GPIO's */
+ gpio = EP93XX_GPIO_LINE_ROW0;
+ for (i = 0; i < 8; i++, gpio++) {
+ err = gpio_request(gpio, pdev->name);
+ if (err)
+ goto failed_free_rows;
+ }
+ gpio = EP93XX_GPIO_LINE_COL0;
+ for (i = 0; i < 8; i++, gpio++) {
+ err = gpio_request(gpio, pdev->name);
+ if (err)
+ goto failed_free_cols;
+ }
+
+ keypad->clk = clk_get(&pdev->dev, NULL);
+ if (IS_ERR(keypad->clk)) {
+ err = PTR_ERR(keypad->clk);
+ goto failed_free_io;
+ }
+
+ input_dev = input_allocate_device();
+ if (!input_dev) {
+ err = -ENOMEM;
+ goto failed_put_clk;
+ }
+
+ input_dev->name = pdev->name;
+ input_dev->id.bustype = BUS_HOST;
+ input_dev->open = ep93xx_keypad_open;
+ input_dev->close = ep93xx_keypad_close;
+ input_dev->dev.parent = &pdev->dev;
+
+ keypad->input_dev = input_dev;
+ input_set_drvdata(input_dev, keypad);
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY);
+ if (keypad->pdata->flags & EP93XX_KEYPAD_AUTOREPEAT)
+ input_dev->evbit[0] |= BIT_MASK(EV_REP);
+
+ 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)
+ goto failed_free_dev;
+
+ keypad->irq = irq;
+
+ err = input_register_device(input_dev);
+ if (err)
+ goto failed_free_irq;
+
+ device_init_wakeup(&pdev->dev, 1);
+
+ return 0;
+
+failed_free_irq:
+ free_irq(irq, pdev);
+ platform_set_drvdata(pdev, NULL);
+failed_free_dev:
+ input_free_device(input_dev);
+failed_put_clk:
+ clk_put(keypad->clk);
+failed_free_io:
+ i = 8 - 1;
+ gpio = EP93XX_GPIO_LINE_COL0 + i;
+failed_free_cols:
+ for ( ; i >= 0; i--, gpio--)
+ gpio_free(gpio);
+ i = 8 - 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));
+failed_free:
+ kfree(keypad);
+ return err;
+}
+
+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);
+
+ platform_set_drvdata(pdev, NULL);
+
+ if (keypad->enabled)
+ clk_disable(keypad->clk);
+ clk_put(keypad->clk);
+
+ input_unregister_device(keypad->input_dev);
+ input_free_device(keypad->input_dev);
+
+ i = 8 - 1;
+ gpio = EP93XX_GPIO_LINE_COL0 + i;
+ for ( ; i >= 0; i--, gpio--)
+ gpio_free(gpio);
+
+ i = 8 - 1;
+ gpio = EP93XX_GPIO_LINE_ROW0 + i;
+ for ( ; i >= 0; i--, gpio--)
+ gpio_free(gpio);
+
+ iounmap(keypad->mmio_base);
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ release_mem_region(res->start, resource_size(res));
+
+ kfree(keypad);
+
+ return 0;
+}
+
+static struct platform_driver ep93xx_keypad_driver = {
+ .driver = {
+ .name = "ep93xx-keypad",
+ .owner = THIS_MODULE,
+ },
+ .probe = ep93xx_keypad_probe,
+ .remove = __devexit_p(ep93xx_keypad_remove),
+ .suspend = ep93xx_keypad_suspend,
+ .resume = ep93xx_keypad_resume,
+};
+
+static int __init ep93xx_keypad_init(void)
+{
+ return platform_driver_register(&ep93xx_keypad_driver);
+}
+
+static void __exit ep93xx_keypad_exit(void)
+{
+ platform_driver_unregister(&ep93xx_keypad_driver);
+}
+
+module_init(ep93xx_keypad_init);
+module_exit(ep93xx_keypad_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>");
+MODULE_DESCRIPTION("EP93xx 8x8 Matrix Keypad Controller");
+MODULE_ALIAS("platform:ep93xx-keypad");
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