148 lines
4.8 KiB
C
148 lines
4.8 KiB
C
/*
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* drivers/input/keyboard/jornada720_kbd.c
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*
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* HP Jornada 720 keyboard platform driver
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*
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* Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com>
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*
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* Copyright (C) 2006 jornada 720 kbd driver by
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Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX
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* based on (C) 2004 jornada 720 kbd driver by
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Alex Lange <chicken@handhelds.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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*/
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#include <linux/device.h>
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#include <linux/errno.h>
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#include <linux/interrupt.h>
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#include <linux/input.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <mach/jornada720.h>
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MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>");
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MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver");
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MODULE_LICENSE("GPL v2");
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static unsigned short jornada_std_keymap[128] = { /* ROW */
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0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, /* #1 */
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KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, /* -> */
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0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, /* #2 */
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KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0, /* -> */
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0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, /* #3 */
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KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0, /* -> */
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0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, /* #4 */
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KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0, /* -> */
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0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, /* #5 */
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KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0, /* -> */
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0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0, /* #6 */
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KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE, /* -> */
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0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK, /* -> */
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KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0, /* -> */
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0, 0, 0, KEY_POWER, /* -> */
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};
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struct jornadakbd {
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unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)];
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struct input_dev *input;
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};
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static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id)
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{
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struct platform_device *pdev = dev_id;
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struct jornadakbd *jornadakbd = platform_get_drvdata(pdev);
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struct input_dev *input = jornadakbd->input;
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u8 count, kbd_data, scan_code;
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/* startup ssp with spinlock */
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jornada_ssp_start();
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if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) {
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dev_dbg(&pdev->dev,
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"GetKeycode command failed with ETIMEDOUT, flushed bus\n");
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} else {
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/* How many keycodes are waiting for us? */
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count = jornada_ssp_byte(TXDUMMY);
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/* Lets drag them out one at a time */
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while (count--) {
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/* Exchange TxDummy for location (keymap[kbddata]) */
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kbd_data = jornada_ssp_byte(TXDUMMY);
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scan_code = kbd_data & 0x7f;
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input_event(input, EV_MSC, MSC_SCAN, scan_code);
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input_report_key(input, jornadakbd->keymap[scan_code],
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!(kbd_data & 0x80));
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input_sync(input);
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}
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}
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/* release spinlock and turn off ssp */
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jornada_ssp_end();
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return IRQ_HANDLED;
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};
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static int jornada720_kbd_probe(struct platform_device *pdev)
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{
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struct jornadakbd *jornadakbd;
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struct input_dev *input_dev;
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int i, err, irq;
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irq = platform_get_irq(pdev, 0);
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if (irq <= 0)
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return irq < 0 ? irq : -EINVAL;
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jornadakbd = devm_kzalloc(&pdev->dev, sizeof(*jornadakbd), GFP_KERNEL);
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input_dev = devm_input_allocate_device(&pdev->dev);
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if (!jornadakbd || !input_dev)
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return -ENOMEM;
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platform_set_drvdata(pdev, jornadakbd);
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memcpy(jornadakbd->keymap, jornada_std_keymap,
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sizeof(jornada_std_keymap));
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jornadakbd->input = input_dev;
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input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
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input_dev->name = "HP Jornada 720 keyboard";
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input_dev->phys = "jornadakbd/input0";
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input_dev->keycode = jornadakbd->keymap;
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input_dev->keycodesize = sizeof(unsigned short);
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input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap);
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input_dev->id.bustype = BUS_HOST;
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input_dev->dev.parent = &pdev->dev;
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for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++)
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__set_bit(jornadakbd->keymap[i], input_dev->keybit);
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__clear_bit(KEY_RESERVED, input_dev->keybit);
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input_set_capability(input_dev, EV_MSC, MSC_SCAN);
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err = devm_request_irq(&pdev->dev, irq, jornada720_kbd_interrupt,
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IRQF_TRIGGER_FALLING, "jornadakbd", pdev);
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if (err) {
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dev_err(&pdev->dev, "unable to grab IRQ%d: %d\n", irq, err);
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return err;
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}
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return input_register_device(jornadakbd->input);
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};
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/* work with hotplug and coldplug */
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MODULE_ALIAS("platform:jornada720_kbd");
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static struct platform_driver jornada720_kbd_driver = {
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.driver = {
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.name = "jornada720_kbd",
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},
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.probe = jornada720_kbd_probe,
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};
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module_platform_driver(jornada720_kbd_driver);
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