1/* 2 * drivers/input/keyboard/jornada720_kbd.c 3 * 4 * HP Jornada 720 keyboard platform driver 5 * 6 * Copyright (C) 2006/2007 Kristoffer Ericson <Kristoffer.Ericson@Gmail.com> 7 * 8 * Copyright (C) 2006 jornada 720 kbd driver by 9 Filip Zyzniewsk <Filip.Zyzniewski@tefnet.plX 10 * based on (C) 2004 jornada 720 kbd driver by 11 Alex Lange <chicken@handhelds.org> 12 * 13 * This program is free software; you can redistribute it and/or modify 14 * it under the terms of the GNU General Public License version 2 as 15 * published by the Free Software Foundation. 16 * 17 */ 18#include <linux/device.h> 19#include <linux/errno.h> 20#include <linux/interrupt.h> 21#include <linux/init.h> 22#include <linux/input.h> 23#include <linux/kernel.h> 24#include <linux/module.h> 25#include <linux/platform_device.h> 26#include <linux/slab.h> 27 28#include <mach/jornada720.h> 29#include <mach/hardware.h> 30 31MODULE_AUTHOR("Kristoffer Ericson <Kristoffer.Ericson@gmail.com>"); 32MODULE_DESCRIPTION("HP Jornada 710/720/728 keyboard driver"); 33MODULE_LICENSE("GPL v2"); 34 35static unsigned short jornada_std_keymap[128] = { /* ROW */ 36 0, KEY_ESC, KEY_F1, KEY_F2, KEY_F3, KEY_F4, KEY_F5, KEY_F6, KEY_F7, /* #1 */ 37 KEY_F8, KEY_F9, KEY_F10, KEY_F11, KEY_VOLUMEUP, KEY_VOLUMEDOWN, KEY_MUTE, /* -> */ 38 0, KEY_1, KEY_2, KEY_3, KEY_4, KEY_5, KEY_6, KEY_7, KEY_8, KEY_9, /* #2 */ 39 KEY_0, KEY_MINUS, KEY_EQUAL,0, 0, 0, /* -> */ 40 0, KEY_Q, KEY_W, KEY_E, KEY_R, KEY_T, KEY_Y, KEY_U, KEY_I, KEY_O, /* #3 */ 41 KEY_P, KEY_BACKSLASH, KEY_BACKSPACE, 0, 0, 0, /* -> */ 42 0, KEY_A, KEY_S, KEY_D, KEY_F, KEY_G, KEY_H, KEY_J, KEY_K, KEY_L, /* #4 */ 43 KEY_SEMICOLON, KEY_LEFTBRACE, KEY_RIGHTBRACE, 0, 0, 0, /* -> */ 44 0, KEY_Z, KEY_X, KEY_C, KEY_V, KEY_B, KEY_N, KEY_M, KEY_COMMA, /* #5 */ 45 KEY_DOT, KEY_KPMINUS, KEY_APOSTROPHE, KEY_ENTER, 0, 0,0, /* -> */ 46 0, KEY_TAB, 0, KEY_LEFTSHIFT, 0, KEY_APOSTROPHE, 0, 0, 0, 0, /* #6 */ 47 KEY_UP, 0, KEY_RIGHTSHIFT, 0, 0, 0,0, 0, 0, 0, 0, KEY_LEFTALT, KEY_GRAVE, /* -> */ 48 0, 0, KEY_LEFT, KEY_DOWN, KEY_RIGHT, 0, 0, 0, 0,0, KEY_KPASTERISK, /* -> */ 49 KEY_LEFTCTRL, 0, KEY_SPACE, 0, 0, 0, KEY_SLASH, KEY_DELETE, 0, 0, /* -> */ 50 0, 0, 0, KEY_POWER, /* -> */ 51}; 52 53struct jornadakbd { 54 unsigned short keymap[ARRAY_SIZE(jornada_std_keymap)]; 55 struct input_dev *input; 56}; 57 58static irqreturn_t jornada720_kbd_interrupt(int irq, void *dev_id) 59{ 60 struct platform_device *pdev = dev_id; 61 struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); 62 struct input_dev *input = jornadakbd->input; 63 u8 count, kbd_data, scan_code; 64 65 /* startup ssp with spinlock */ 66 jornada_ssp_start(); 67 68 if (jornada_ssp_inout(GETSCANKEYCODE) != TXDUMMY) { 69 printk(KERN_DEBUG 70 "jornada720_kbd: " 71 "GetKeycode command failed with ETIMEDOUT, " 72 "flushed bus\n"); 73 } else { 74 /* How many keycodes are waiting for us? */ 75 count = jornada_ssp_byte(TXDUMMY); 76 77 /* Lets drag them out one at a time */ 78 while (count--) { 79 /* Exchange TxDummy for location (keymap[kbddata]) */ 80 kbd_data = jornada_ssp_byte(TXDUMMY); 81 scan_code = kbd_data & 0x7f; 82 83 input_event(input, EV_MSC, MSC_SCAN, scan_code); 84 input_report_key(input, jornadakbd->keymap[scan_code], 85 !(kbd_data & 0x80)); 86 input_sync(input); 87 } 88 } 89 90 /* release spinlock and turn off ssp */ 91 jornada_ssp_end(); 92 93 return IRQ_HANDLED; 94}; 95 96static int __devinit jornada720_kbd_probe(struct platform_device *pdev) 97{ 98 struct jornadakbd *jornadakbd; 99 struct input_dev *input_dev; 100 int i, err; 101 102 jornadakbd = kzalloc(sizeof(struct jornadakbd), GFP_KERNEL); 103 input_dev = input_allocate_device(); 104 if (!jornadakbd || !input_dev) { 105 err = -ENOMEM; 106 goto fail1; 107 } 108 109 platform_set_drvdata(pdev, jornadakbd); 110 111 memcpy(jornadakbd->keymap, jornada_std_keymap, 112 sizeof(jornada_std_keymap)); 113 jornadakbd->input = input_dev; 114 115 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP); 116 input_dev->name = "HP Jornada 720 keyboard"; 117 input_dev->phys = "jornadakbd/input0"; 118 input_dev->keycode = jornadakbd->keymap; 119 input_dev->keycodesize = sizeof(unsigned short); 120 input_dev->keycodemax = ARRAY_SIZE(jornada_std_keymap); 121 input_dev->id.bustype = BUS_HOST; 122 input_dev->dev.parent = &pdev->dev; 123 124 for (i = 0; i < ARRAY_SIZE(jornadakbd->keymap); i++) 125 __set_bit(jornadakbd->keymap[i], input_dev->keybit); 126 __clear_bit(KEY_RESERVED, input_dev->keybit); 127 128 input_set_capability(input_dev, EV_MSC, MSC_SCAN); 129 130 err = request_irq(IRQ_GPIO0, 131 jornada720_kbd_interrupt, 132 IRQF_DISABLED | IRQF_TRIGGER_FALLING, 133 "jornadakbd", pdev); 134 if (err) { 135 printk(KERN_INFO "jornadakbd720_kbd: Unable to grab IRQ\n"); 136 goto fail1; 137 } 138 139 err = input_register_device(jornadakbd->input); 140 if (err) 141 goto fail2; 142 143 return 0; 144 145 fail2: /* IRQ, DEVICE, MEMORY */ 146 free_irq(IRQ_GPIO0, pdev); 147 fail1: /* DEVICE, MEMORY */ 148 platform_set_drvdata(pdev, NULL); 149 input_free_device(input_dev); 150 kfree(jornadakbd); 151 return err; 152}; 153 154static int __devexit jornada720_kbd_remove(struct platform_device *pdev) 155{ 156 struct jornadakbd *jornadakbd = platform_get_drvdata(pdev); 157 158 free_irq(IRQ_GPIO0, pdev); 159 platform_set_drvdata(pdev, NULL); 160 input_unregister_device(jornadakbd->input); 161 kfree(jornadakbd); 162 163 return 0; 164} 165 166/* work with hotplug and coldplug */ 167MODULE_ALIAS("platform:jornada720_kbd"); 168 169static struct platform_driver jornada720_kbd_driver = { 170 .driver = { 171 .name = "jornada720_kbd", 172 .owner = THIS_MODULE, 173 }, 174 .probe = jornada720_kbd_probe, 175 .remove = __devexit_p(jornada720_kbd_remove), 176}; 177 178static int __init jornada720_kbd_init(void) 179{ 180 return platform_driver_register(&jornada720_kbd_driver); 181} 182 183static void __exit jornada720_kbd_exit(void) 184{ 185 platform_driver_unregister(&jornada720_kbd_driver); 186} 187 188module_init(jornada720_kbd_init); 189module_exit(jornada720_kbd_exit); 190