245 lines
7.2 KiB
C
245 lines
7.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* drivers/input/keyboard/jornada680_kbd.c
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*
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* HP Jornada 620/660/680/690 scan keyboard platform driver
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* Copyright (C) 2007 Kristoffer Ericson <Kristoffer.Ericson@gmail.com>
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*
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* Based on hp680_keyb.c
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* Copyright (C) 2006 Paul Mundt
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* Copyright (C) 2005 Andriy Skulysh
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* Split from drivers/input/keyboard/hp600_keyb.c
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* Copyright (C) 2000 Yaegashi Takeshi (hp6xx kbd scan routine and translation table)
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* Copyright (C) 2000 Niibe Yutaka (HP620 Keyb translation table)
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*/
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#include <linux/device.h>
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#include <linux/input.h>
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#include <linux/interrupt.h>
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#include <linux/jiffies.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 <asm/delay.h>
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#include <asm/io.h>
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#define PCCR 0xa4000104
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#define PDCR 0xa4000106
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#define PECR 0xa4000108
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#define PFCR 0xa400010a
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#define PCDR 0xa4000124
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#define PDDR 0xa4000126
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#define PEDR 0xa4000128
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#define PFDR 0xa400012a
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#define PGDR 0xa400012c
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#define PHDR 0xa400012e
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#define PJDR 0xa4000130
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#define PKDR 0xa4000132
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#define PLDR 0xa4000134
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static const unsigned short jornada_scancodes[] = {
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/* PTD1 */ KEY_CAPSLOCK, KEY_MACRO, KEY_LEFTCTRL, 0, KEY_ESC, KEY_KP5, 0, 0, /* 1 -> 8 */
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KEY_F1, KEY_F2, KEY_F3, KEY_F8, KEY_F7, KEY_F6, KEY_F4, KEY_F5, /* 9 -> 16 */
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/* PTD5 */ KEY_SLASH, KEY_APOSTROPHE, KEY_ENTER, 0, KEY_Z, 0, 0, 0, /* 17 -> 24 */
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KEY_X, KEY_C, KEY_V, KEY_DOT, KEY_COMMA, KEY_M, KEY_B, KEY_N, /* 25 -> 32 */
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/* PTD7 */ KEY_KP2, KEY_KP6, KEY_KP3, 0, 0, 0, 0, 0, /* 33 -> 40 */
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KEY_F10, KEY_RO, KEY_F9, KEY_KP4, KEY_NUMLOCK, KEY_SCROLLLOCK, KEY_LEFTALT, KEY_HANJA, /* 41 -> 48 */
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/* PTE0 */ KEY_KATAKANA, KEY_KP0, KEY_GRAVE, 0, KEY_FINANCE, 0, 0, 0, /* 49 -> 56 */
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KEY_KPMINUS, KEY_HIRAGANA, KEY_SPACE, KEY_KPDOT, KEY_VOLUMEUP, 249, 0, 0, /* 57 -> 64 */
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/* PTE1 */ KEY_SEMICOLON, KEY_RIGHTBRACE, KEY_BACKSLASH, 0, KEY_A, 0, 0, 0, /* 65 -> 72 */
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KEY_S, KEY_D, KEY_F, KEY_L, KEY_K, KEY_J, KEY_G, KEY_H, /* 73 -> 80 */
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/* PTE3 */ KEY_KP8, KEY_LEFTMETA, KEY_RIGHTSHIFT, 0, KEY_TAB, 0, 0, 0, /* 81 -> 88 */
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0, KEY_LEFTSHIFT, KEY_KP7, KEY_KP9, KEY_KP1, KEY_F11, KEY_KPPLUS, KEY_KPASTERISK, /* 89 -> 96 */
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/* PTE6 */ KEY_P, KEY_LEFTBRACE, KEY_BACKSPACE, 0, KEY_Q, 0, 0, 0, /* 97 -> 104 */
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KEY_W, KEY_E, KEY_R, KEY_O, KEY_I, KEY_U, KEY_T, KEY_Y, /* 105 -> 112 */
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/* PTE7 */ KEY_0, KEY_MINUS, KEY_EQUAL, 0, KEY_1, 0, 0, 0, /* 113 -> 120 */
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KEY_2, KEY_3, KEY_4, KEY_9, KEY_8, KEY_7, KEY_5, KEY_6, /* 121 -> 128 */
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/* **** */ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0
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};
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#define JORNADA_SCAN_SIZE 18
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struct jornadakbd {
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struct input_dev *input;
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unsigned short keymap[ARRAY_SIZE(jornada_scancodes)];
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unsigned char length;
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unsigned char old_scan[JORNADA_SCAN_SIZE];
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unsigned char new_scan[JORNADA_SCAN_SIZE];
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};
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static void jornada_parse_kbd(struct jornadakbd *jornadakbd)
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{
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struct input_dev *input_dev = jornadakbd->input;
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unsigned short *keymap = jornadakbd->keymap;
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unsigned int sync_me = 0;
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unsigned int i, j;
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for (i = 0; i < JORNADA_SCAN_SIZE; i++) {
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unsigned char new = jornadakbd->new_scan[i];
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unsigned char old = jornadakbd->old_scan[i];
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unsigned int xor = new ^ old;
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if (xor == 0)
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continue;
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for (j = 0; j < 8; j++) {
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unsigned int bit = 1 << j;
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if (xor & bit) {
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unsigned int scancode = (i << 3) + j;
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input_event(input_dev,
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EV_MSC, MSC_SCAN, scancode);
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input_report_key(input_dev,
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keymap[scancode],
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!(new & bit));
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sync_me = 1;
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}
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}
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}
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if (sync_me)
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input_sync(input_dev);
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}
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static void jornada_scan_keyb(unsigned char *s)
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{
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int i;
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unsigned short ec_static, dc_static; /* = UINT16_t */
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unsigned char matrix_switch[] = {
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0xfd, 0xff, /* PTD1 PD(1) */
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0xdf, 0xff, /* PTD5 PD(5) */
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0x7f, 0xff, /* PTD7 PD(7) */
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0xff, 0xfe, /* PTE0 PE(0) */
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0xff, 0xfd, /* PTE1 PE(1) */
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0xff, 0xf7, /* PTE3 PE(3) */
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0xff, 0xbf, /* PTE6 PE(6) */
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0xff, 0x7f, /* PTE7 PE(7) */
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}, *t = matrix_switch;
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/* PD(x) :
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1. 0xcc0c & (1~(1 << (2*(x)+1)))))
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2. (0xf0cf & 0xfffff) */
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/* PE(x) :
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1. 0xcc0c & 0xffff
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2. 0xf0cf & (1~(1 << (2*(x)+1))))) */
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unsigned short matrix_PDE[] = {
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0xcc04, 0xf0cf, /* PD(1) */
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0xc40c, 0xf0cf, /* PD(5) */
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0x4c0c, 0xf0cf, /* PD(7) */
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0xcc0c, 0xf0cd, /* PE(0) */
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0xcc0c, 0xf0c7, /* PE(1) */
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0xcc0c, 0xf04f, /* PE(3) */
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0xcc0c, 0xd0cf, /* PE(6) */
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0xcc0c, 0x70cf, /* PE(7) */
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}, *y = matrix_PDE;
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/* Save these control reg bits */
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dc_static = (__raw_readw(PDCR) & (~0xcc0c));
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ec_static = (__raw_readw(PECR) & (~0xf0cf));
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for (i = 0; i < 8; i++) {
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/* disable output for all but the one we want to scan */
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__raw_writew((dc_static | *y++), PDCR);
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__raw_writew((ec_static | *y++), PECR);
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udelay(5);
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/* Get scanline row */
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__raw_writeb(*t++, PDDR);
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__raw_writeb(*t++, PEDR);
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udelay(50);
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/* Read data */
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*s++ = __raw_readb(PCDR);
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*s++ = __raw_readb(PFDR);
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}
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/* Scan no lines */
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__raw_writeb(0xff, PDDR);
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__raw_writeb(0xff, PEDR);
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/* Enable all scanlines */
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__raw_writew((dc_static | (0x5555 & 0xcc0c)),PDCR);
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__raw_writew((ec_static | (0x5555 & 0xf0cf)),PECR);
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/* Ignore extra keys and events */
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*s++ = __raw_readb(PGDR);
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*s++ = __raw_readb(PHDR);
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}
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static void jornadakbd680_poll(struct input_dev *input)
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{
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struct jornadakbd *jornadakbd = input_get_drvdata(input);
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jornada_scan_keyb(jornadakbd->new_scan);
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jornada_parse_kbd(jornadakbd);
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memcpy(jornadakbd->old_scan, jornadakbd->new_scan, JORNADA_SCAN_SIZE);
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}
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static int jornada680kbd_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, error;
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jornadakbd = devm_kzalloc(&pdev->dev, sizeof(struct jornadakbd),
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GFP_KERNEL);
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if (!jornadakbd)
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return -ENOMEM;
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input_dev = devm_input_allocate_device(&pdev->dev);
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if (!input_dev) {
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dev_err(&pdev->dev, "failed to allocate input device\n");
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return -ENOMEM;
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}
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jornadakbd->input = input_dev;
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memcpy(jornadakbd->keymap, jornada_scancodes,
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sizeof(jornadakbd->keymap));
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input_set_drvdata(input_dev, jornadakbd);
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input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP);
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input_dev->name = "HP Jornada 680 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_scancodes);
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input_dev->id.bustype = BUS_HOST;
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for (i = 0; i < 128; i++)
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if (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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error = input_setup_polling(input_dev, jornadakbd680_poll);
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if (error) {
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dev_err(&pdev->dev, "failed to set up polling\n");
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return error;
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}
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input_set_poll_interval(input_dev, 50 /* msec */);
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error = input_register_device(input_dev);
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if (error) {
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dev_err(&pdev->dev, "failed to register input device\n");
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return error;
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}
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return 0;
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}
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static struct platform_driver jornada680kbd_driver = {
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.driver = {
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.name = "jornada680_kbd",
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},
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.probe = jornada680kbd_probe,
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};
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module_platform_driver(jornada680kbd_driver);
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MODULE_AUTHOR("Kristoffer Ericson <kristoffer.ericson@gmail.com>");
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MODULE_DESCRIPTION("HP Jornada 620/660/680/690 Keyboard Driver");
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MODULE_LICENSE("GPL v2");
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MODULE_ALIAS("platform:jornada680_kbd");
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