linux/drivers/input/keyboard/spear-keyboard.c

/*
 * SPEAr Keyboard Driver
 * Based on omap-keypad driver
 *
 * Copyright (C) 2010 ST Microelectronics
 * Rajeev Kumar <[email protected]>
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/clk.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/input.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/pm_wakeup.h>
#include <linux/slab.h>
#include <linux/types.h>
#include <linux/platform_data/keyboard-spear.h>

/* Keyboard Registers */
#define MODE_CTL_REG …
#define STATUS_REG …
#define DATA_REG …
#define INTR_MASK …

/* Register Values */
#define NUM_ROWS …
#define NUM_COLS …
#define MODE_CTL_PCLK_FREQ_SHIFT …
#define MODE_CTL_PCLK_FREQ_MSK …

#define MODE_CTL_KEYBOARD …
#define MODE_CTL_SCAN_RATE_10 …
#define MODE_CTL_SCAN_RATE_20 …
#define MODE_CTL_SCAN_RATE_40 …
#define MODE_CTL_SCAN_RATE_80 …
#define MODE_CTL_KEYNUM_SHIFT …
#define MODE_CTL_START_SCAN …

#define STATUS_DATA_AVAIL …

#define DATA_ROW_MASK …
#define DATA_COLUMN_MASK …

#define ROW_SHIFT …

struct spear_kbd { … };

static irqreturn_t spear_kbd_interrupt(int irq, void *dev_id)
{ … }

static int spear_kbd_open(struct input_dev *dev)
{ … }

static void spear_kbd_close(struct input_dev *dev)
{ … }

#ifdef CONFIG_OF
static int spear_kbd_parse_dt(struct platform_device *pdev,
                                        struct spear_kbd *kbd)
{ … }
#else
static inline int spear_kbd_parse_dt(struct platform_device *pdev,
				     struct spear_kbd *kbd)
{
	return -ENOSYS;
}
#endif

static int spear_kbd_probe(struct platform_device *pdev)
{ … }

static int spear_kbd_suspend(struct device *dev)
{ … }

static int spear_kbd_resume(struct device *dev)
{ … }

static DEFINE_SIMPLE_DEV_PM_OPS(spear_kbd_pm_ops,
				spear_kbd_suspend, spear_kbd_resume);

#ifdef CONFIG_OF
static const struct of_device_id spear_kbd_id_table[] = …;
MODULE_DEVICE_TABLE(of, spear_kbd_id_table);
#endif

static struct platform_driver spear_kbd_driver = …;
module_platform_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;