+++ /dev/null
-/*
- * Keyboard driver for the AAED-2000 dev board
- *
- * Copyright (c) 2006 Nicolas Bellido Y Ortega
- *
- * Based on corgikbd.c
- *
- * 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.
- *
- */
-
-#include <linux/delay.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/input-polldev.h>
-#include <linux/interrupt.h>
-#include <linux/jiffies.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-
-#include <mach/hardware.h>
-#include <mach/aaed2000.h>
-
-#define KB_ROWS 12
-#define KB_COLS 8
-#define KB_ROWMASK(r) (1 << (r))
-#define SCANCODE(r,c) (((c) * KB_ROWS) + (r))
-#define NR_SCANCODES (KB_COLS * KB_ROWS)
-
-#define SCAN_INTERVAL (50) /* ms */
-#define KB_ACTIVATE_DELAY (20) /* us */
-
-static unsigned char aaedkbd_keycode[NR_SCANCODES] = {
- KEY_9, KEY_0, KEY_MINUS, KEY_EQUAL, KEY_BACKSPACE, 0, KEY_SPACE, KEY_KP6, 0, KEY_KPDOT, 0, 0,
- KEY_K, KEY_M, KEY_O, KEY_DOT, KEY_SLASH, 0, KEY_F, 0, 0, 0, KEY_LEFTSHIFT, 0,
- KEY_I, KEY_P, KEY_LEFTBRACE, KEY_RIGHTBRACE, KEY_BACKSLASH, 0, 0, 0, 0, 0, KEY_RIGHTSHIFT, 0,
- KEY_8, KEY_L, KEY_SEMICOLON, KEY_APOSTROPHE, KEY_ENTER, 0, 0, 0, 0, 0, 0, 0,
- KEY_J, KEY_H, KEY_B, KEY_KP8, KEY_KP4, 0, KEY_C, KEY_D, KEY_S, KEY_A, 0, KEY_CAPSLOCK,
- KEY_Y, KEY_U, KEY_N, KEY_T, 0, 0, KEY_R, KEY_E, KEY_W, KEY_Q, 0, KEY_TAB,
- KEY_7, KEY_6, KEY_G, 0, KEY_5, 0, KEY_4, KEY_3, KEY_2, KEY_1, 0, KEY_GRAVE,
- 0, 0, KEY_COMMA, 0, KEY_KP2, 0, KEY_V, KEY_LEFTALT, KEY_X, KEY_Z, 0, KEY_LEFTCTRL
-};
-
-struct aaedkbd {
- unsigned char keycode[ARRAY_SIZE(aaedkbd_keycode)];
- struct input_polled_dev *poll_dev;
- int kbdscan_state[KB_COLS];
- int kbdscan_count[KB_COLS];
-};
-
-#define KBDSCAN_STABLE_COUNT 2
-
-static void aaedkbd_report_col(struct aaedkbd *aaedkbd,
- unsigned int col, unsigned int rowd)
-{
- unsigned int scancode, pressed;
- unsigned int row;
-
- for (row = 0; row < KB_ROWS; row++) {
- scancode = SCANCODE(row, col);
- pressed = rowd & KB_ROWMASK(row);
-
- input_report_key(aaedkbd->poll_dev->input,
- aaedkbd->keycode[scancode], pressed);
- }
-}
-
-/* Scan the hardware keyboard and push any changes up through the input layer */
-static void aaedkbd_poll(struct input_polled_dev *dev)
-{
- struct aaedkbd *aaedkbd = dev->private;
- unsigned int col, rowd;
-
- col = 0;
- do {
- AAEC_GPIO_KSCAN = col + 8;
- udelay(KB_ACTIVATE_DELAY);
- rowd = AAED_EXT_GPIO & AAED_EGPIO_KBD_SCAN;
-
- if (rowd != aaedkbd->kbdscan_state[col]) {
- aaedkbd->kbdscan_count[col] = 0;
- aaedkbd->kbdscan_state[col] = rowd;
- } else if (++aaedkbd->kbdscan_count[col] >= KBDSCAN_STABLE_COUNT) {
- aaedkbd_report_col(aaedkbd, col, rowd);
- col++;
- }
- } while (col < KB_COLS);
-
- AAEC_GPIO_KSCAN = 0x07;
- input_sync(dev->input);
-}
-
-static int __devinit aaedkbd_probe(struct platform_device *pdev)
-{
- struct aaedkbd *aaedkbd;
- struct input_polled_dev *poll_dev;
- struct input_dev *input_dev;
- int i;
- int error;
-
- aaedkbd = kzalloc(sizeof(struct aaedkbd), GFP_KERNEL);
- poll_dev = input_allocate_polled_device();
- if (!aaedkbd || !poll_dev) {
- error = -ENOMEM;
- goto fail;
- }
-
- platform_set_drvdata(pdev, aaedkbd);
-
- aaedkbd->poll_dev = poll_dev;
- memcpy(aaedkbd->keycode, aaedkbd_keycode, sizeof(aaedkbd->keycode));
-
- poll_dev->private = aaedkbd;
- poll_dev->poll = aaedkbd_poll;
- poll_dev->poll_interval = SCAN_INTERVAL;
-
- input_dev = poll_dev->input;
- input_dev->name = "AAED-2000 Keyboard";
- input_dev->phys = "aaedkbd/input0";
- input_dev->id.bustype = BUS_HOST;
- input_dev->id.vendor = 0x0001;
- input_dev->id.product = 0x0001;
- input_dev->id.version = 0x0100;
- input_dev->dev.parent = &pdev->dev;
-
- input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP);
- input_dev->keycode = aaedkbd->keycode;
- input_dev->keycodesize = sizeof(unsigned char);
- input_dev->keycodemax = ARRAY_SIZE(aaedkbd_keycode);
-
- for (i = 0; i < ARRAY_SIZE(aaedkbd_keycode); i++)
- set_bit(aaedkbd->keycode[i], input_dev->keybit);
- clear_bit(0, input_dev->keybit);
-
- error = input_register_polled_device(aaedkbd->poll_dev);
- if (error)
- goto fail;
-
- return 0;
-
- fail: kfree(aaedkbd);
- input_free_polled_device(poll_dev);
- return error;
-}
-
-static int __devexit aaedkbd_remove(struct platform_device *pdev)
-{
- struct aaedkbd *aaedkbd = platform_get_drvdata(pdev);
-
- input_unregister_polled_device(aaedkbd->poll_dev);
- input_free_polled_device(aaedkbd->poll_dev);
- kfree(aaedkbd);
-
- return 0;
-}
-
-/* work with hotplug and coldplug */
-MODULE_ALIAS("platform:aaed2000-keyboard");
-
-static struct platform_driver aaedkbd_driver = {
- .probe = aaedkbd_probe,
- .remove = __devexit_p(aaedkbd_remove),
- .driver = {
- .name = "aaed2000-keyboard",
- .owner = THIS_MODULE,
- },
-};
-
-static int __init aaedkbd_init(void)
-{
- return platform_driver_register(&aaedkbd_driver);
-}
-
-static void __exit aaedkbd_exit(void)
-{
- platform_driver_unregister(&aaedkbd_driver);
-}
-
-module_init(aaedkbd_init);
-module_exit(aaedkbd_exit);
-
-MODULE_AUTHOR("Nicolas Bellido Y Ortega");
-MODULE_DESCRIPTION("AAED-2000 Keyboard Driver");
-MODULE_LICENSE("GPL v2");
projects / ~shefty / rdma-dev.git / commitdiff