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