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