+// SPDX-License-Identifier: GPL-2.0+
/*
* (C) Copyright 2002 ELTEC Elektronik AG
* Frank Gottschling <fgottschling@eltec.de>
- *
- * SPDX-License-Identifier: GPL-2.0+
*/
/* i8042.c - Intel 8042 keyboard driver routines */
-/* includes */
-
#include <common.h>
-#include <linux/compiler.h>
-
-#ifdef CONFIG_USE_CPCIDVI
-extern u8 gt_cpcidvi_in8(u32 offset);
-extern void gt_cpcidvi_out8(u32 offset, u8 data);
-
-#define in8(a) gt_cpcidvi_in8(a)
-#define out8(a, b) gt_cpcidvi_out8(a, b)
-#endif
-
+#include <dm.h>
+#include <errno.h>
#include <i8042.h>
+#include <input.h>
+#include <keyboard.h>
+#include <asm/io.h>
+
+DECLARE_GLOBAL_DATA_PTR;
/* defines */
+#define in8(p) inb(p)
+#define out8(p, v) outb(v, p)
-#ifdef CONFIG_CONSOLE_CURSOR
-extern void console_cursor(int state);
-static int blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
-static int cursor_state;
-#endif
+enum {
+ QUIRK_DUP_POR = 1 << 0,
+};
/* locals */
-
-static int kbd_input = -1; /* no input yet */
-static int kbd_mapping = KBD_US; /* default US keyboard */
-static int kbd_flags = NORMAL; /* after reset */
-static int kbd_state; /* unshift code */
-
-static void kbd_conv_char(unsigned char scan_code);
-static void kbd_led_set(void);
-static void kbd_normal(unsigned char scan_code);
-static void kbd_shift(unsigned char scan_code);
-static void kbd_ctrl(unsigned char scan_code);
-static void kbd_num(unsigned char scan_code);
-static void kbd_caps(unsigned char scan_code);
-static void kbd_scroll(unsigned char scan_code);
-static void kbd_alt(unsigned char scan_code);
-static int kbd_input_empty(void);
-static int kbd_reset(void);
-
-static unsigned char kbd_fct_map[144] = {
- /* kbd_fct_map table for scan code */
- 0, AS, AS, AS, AS, AS, AS, AS, /* scan 0- 7 */
- AS, AS, AS, AS, AS, AS, AS, AS, /* scan 8- F */
- AS, AS, AS, AS, AS, AS, AS, AS, /* scan 10-17 */
- AS, AS, AS, AS, AS, CN, AS, AS, /* scan 18-1F */
- AS, AS, AS, AS, AS, AS, AS, AS, /* scan 20-27 */
- AS, AS, SH, AS, AS, AS, AS, AS, /* scan 28-2F */
- AS, AS, AS, AS, AS, AS, SH, AS, /* scan 30-37 */
- AS, AS, CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, ES, /* scan 40-47 */
- ES, ES, ES, ES, ES, ES, ES, ES, /* scan 48-4F */
- ES, ES, ES, ES, 0, 0, AS, 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- AS, 0, 0, AS, 0, 0, AS, 0, /* scan 70-77 */
- 0, AS, 0, 0, 0, AS, 0, 0, /* scan 78-7F */
- AS, CN, AS, AS, AK, ST, EX, EX, /* enhanced */
- AS, EX, EX, AS, EX, AS, EX, EX /* enhanced */
- };
-
-static unsigned char kbd_key_map[2][5][144] = {
- { /* US keyboard */
- { /* unshift code */
- 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
- '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
- 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
- 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
- '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
- 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
- '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
- '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* shift code */
- 0, 0x1b, '!', '@', '#', '$', '%', '^', /* scan 0- 7 */
- '&', '*', '(', ')', '_', '+', 0x08, '\t', /* scan 8- F */
- 'Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', /* scan 10-17 */
- 'O', 'P', '{', '}', '\r', CN, 'A', 'S', /* scan 18-1F */
- 'D', 'F', 'G', 'H', 'J', 'K', 'L', ':', /* scan 20-27 */
- '"', '~', SH, '|', 'Z', 'X', 'C', 'V', /* scan 28-2F */
- 'B', 'N', 'M', '<', '>', '?', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
- '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
- '2', '3', '0', '.', 0, 0, 0, 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* control code */
- 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
- 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
- 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
- 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
- 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
- 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
- 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
- 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
- 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
- },
- { /* non numeric code */
- 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
- '7', '8', '9', '0', '-', '=', 0x08, '\t', /* scan 8- F */
- 'q', 'w', 'e', 'r', 't', 'y', 'u', 'i', /* scan 10-17 */
- 'o', 'p', '[', ']', '\r', CN, 'a', 's', /* scan 18-1F */
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', ';', /* scan 20-27 */
- '\'', '`', SH, '\\', 'z', 'x', 'c', 'v', /* scan 28-2F */
- 'b', 'n', 'm', ',', '.', '/', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
- 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
- 'r', 's', 'p', 'n', 0, 0, 0, 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* right alt mode - not used in US keyboard */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 8 - F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50 -57 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
- }
- },
- { /* german keyboard */
- { /* unshift code */
- 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
- '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
- 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
- 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
- 0x84, '^', SH, '#', 'y', 'x', 'c', 'v', /* scan 28-2F */
- 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
- '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
- '2', '3', '0', ',', 0, 0, '<', 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* shift code */
- 0, 0x1b, '!', '"', 0x15, '$', '%', '&', /* scan 0- 7 */
- '/', '(', ')', '=', '?', '`', 0x08, '\t', /* scan 8- F */
- 'Q', 'W', 'E', 'R', 'T', 'Z', 'U', 'I', /* scan 10-17 */
- 'O', 'P', 0x9a, '*', '\r', CN, 'A', 'S', /* scan 18-1F */
- 'D', 'F', 'G', 'H', 'J', 'K', 'L', 0x99, /* scan 20-27 */
- 0x8e, 0xf8, SH, '\'', 'Y', 'X', 'C', 'V', /* scan 28-2F */
- 'B', 'N', 'M', ';', ':', '_', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, '7', /* scan 40-47 */
- '8', '9', '-', '4', '5', '6', '+', '1', /* scan 48-4F */
- '2', '3', '0', ',', 0, 0, '>', 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* control code */
- 0xff, 0x1b, 0xff, 0x00, 0xff, 0xff, 0xff, 0xff, /* scan 0- 7 */
- 0x1e, 0xff, 0xff, 0xff, 0x1f, 0xff, 0xff, '\t', /* scan 8- F */
- 0x11, 0x17, 0x05, 0x12, 0x14, 0x19, 0x15, 0x09, /* scan 10-17 */
- 0x0f, 0x10, 0x1b, 0x1d, '\r', CN, 0x01, 0x13, /* scan 18-1F */
- 0x04, 0x06, 0x07, 0x08, 0x0a, 0x0b, 0x0c, 0xff, /* scan 20-27 */
- 0xff, 0x1c, SH, 0xff, 0x1a, 0x18, 0x03, 0x16, /* scan 28-2F */
- 0x02, 0x0e, 0x0d, 0xff, 0xff, 0xff, SH, 0xff, /* scan 30-37 */
- 0xff, 0xff, CP, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38-3F */
- 0xff, 0xff, 0xff, 0xff, 0xff, NM, ST, 0xff, /* scan 40-47 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48-4F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 50-57 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58-5F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60-67 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68-6F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70-77 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 0xff, 0xff, /* extended */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
- },
- { /* non numeric code */
- 0, 0x1b, '1', '2', '3', '4', '5', '6', /* scan 0- 7 */
- '7', '8', '9', '0', 0xe1, '\'', 0x08, '\t', /* scan 8- F */
- 'q', 'w', 'e', 'r', 't', 'z', 'u', 'i', /* scan 10-17 */
- 'o', 'p', 0x81, '+', '\r', CN, 'a', 's', /* scan 18-1F */
- 'd', 'f', 'g', 'h', 'j', 'k', 'l', 0x94, /* scan 20-27 */
- 0x84, '^', SH, 0, 'y', 'x', 'c', 'v', /* scan 28-2F */
- 'b', 'n', 'm', ',', '.', '-', SH, '*', /* scan 30-37 */
- ' ', ' ', CP, 0, 0, 0, 0, 0, /* scan 38-3F */
- 0, 0, 0, 0, 0, NM, ST, 'w', /* scan 40-47 */
- 'x', 'y', 'l', 't', 'u', 'v', 'm', 'q', /* scan 48-4F */
- 'r', 's', 'p', 'n', 0, 0, '<', 0, /* scan 50-57 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 58-5F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 60-67 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 68-6F */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 70-77 */
- 0, 0, 0, 0, 0, 0, 0, 0, /* scan 78-7F */
- '\r', CN, '/', '*', ' ', ST, 'F', 'A', /* extended */
- 0, 'D', 'C', 0, 'B', 0, '@', 'P' /* extended */
- },
- { /* Right alt mode - is used in German keyboard */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 0 - 7 */
- '{', '[', ']', '}', '\\', 0xff, 0xff, 0xff, /* scan 8 - F */
- '@', 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 10 -17 */
- 0xff, 0xff, 0xff, '~', 0xff, 0xff, 0xff, 0xff, /* scan 18 -1F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 20 -27 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 28 -2F */
- 0xff, 0xff, 0xe6, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 30 -37 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 38 -3F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 40 -47 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 48 -4F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, '|', 0xff, /* scan 50 -57 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 58 -5F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 60 -67 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 68 -6F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 70 -77 */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* scan 78 -7F */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, /* extended */
- 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff /* extended */
- }
- }
- };
+struct i8042_kbd_priv {
+ bool extended; /* true if an extended keycode is expected next */
+ int quirks; /* quirks that we support */
+};
static unsigned char ext_key_map[] = {
0x1c, /* keypad enter */
0x00 /* map end */
};
-/******************************************************************************/
-
-static int kbd_controller_present(void)
-{
- return in8(I8042_STATUS_REG) != 0xff;
-}
-
-/*
- * Implement a weak default function for boards that optionally
- * need to skip the i8042 initialization.
- */
-int __weak board_i8042_skip(void)
-{
- /* As default, don't skip */
- return 0;
-}
-
-void i8042_flush(void)
+static int kbd_input_empty(void)
{
- int timeout;
+ int kbd_timeout = KBD_TIMEOUT * 1000;
- /*
- * The delay is to give the keyboard controller some time to fill the
- * next byte.
- */
- while (1) {
- timeout = 100; /* wait for no longer than 100us */
- while (timeout > 0 && !(in8(I8042_STATUS_REG) & 0x01)) {
- udelay(1);
- timeout--;
- }
+ while ((in8(I8042_STS_REG) & STATUS_IBF) && kbd_timeout--)
+ udelay(1);
- /* Try to pull next byte if not timeout. */
- if (in8(I8042_STATUS_REG) & 0x01)
- in8(I8042_DATA_REG);
- else
- break;
- }
+ return kbd_timeout != -1;
}
-int i8042_disable(void)
+static int kbd_output_full(void)
{
- if (kbd_input_empty() == 0)
- return -1;
-
- /* Disable keyboard */
- out8(I8042_COMMAND_REG, 0xad);
+ int kbd_timeout = KBD_TIMEOUT * 1000;
- if (kbd_input_empty() == 0)
- return -1;
+ while (((in8(I8042_STS_REG) & STATUS_OBF) == 0) && kbd_timeout--)
+ udelay(1);
- return 0;
+ return kbd_timeout != -1;
}
-
-/*******************************************************************************
+/**
+ * check_leds() - Check the keyboard LEDs and update them it needed
*
- * i8042_kbd_init - reset keyboard and init state flags
+ * @ret: Value to return
+ * @return value of @ret
*/
-int i8042_kbd_init(void)
+static int i8042_kbd_update_leds(struct udevice *dev, int leds)
{
- int keymap, try;
- char *penv;
-
- if (!kbd_controller_present() || board_i8042_skip())
- return -1;
-
-#ifdef CONFIG_USE_CPCIDVI
- penv = getenv("console");
- if (penv != NULL) {
- if (strncmp(penv, "serial", 7) == 0)
- return -1;
- }
-#endif
- /* Init keyboard device (default US layout) */
- keymap = KBD_US;
- penv = getenv("keymap");
- if (penv != NULL) {
- if (strncmp(penv, "de", 3) == 0)
- keymap = KBD_GER;
- }
+ kbd_input_empty();
+ out8(I8042_DATA_REG, CMD_SET_KBD_LED);
+ kbd_input_empty();
+ out8(I8042_DATA_REG, leds & 0x7);
- for (try = 0; try < KBD_RESET_TRIES; try++) {
- if (kbd_reset() == 0) {
- kbd_mapping = keymap;
- kbd_flags = NORMAL;
- kbd_state = 0;
- kbd_led_set();
- return 0;
- }
- }
- return -1;
+ return 0;
}
-
-/*******************************************************************************
- *
- * i8042_tstc - test if keyboard input is available
- * option: cursor blinking if called in a loop
- */
-int i8042_tstc(void)
+static int kbd_write(int reg, int value)
{
- unsigned char scan_code = 0;
-
-#ifdef CONFIG_CONSOLE_CURSOR
- if (--blinkCount == 0) {
- cursor_state ^= 1;
- console_cursor(cursor_state);
- blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
- udelay(10);
- }
-#endif
-
- if ((in8(I8042_STATUS_REG) & 0x01) == 0) {
- return 0;
- } else {
- scan_code = in8(I8042_DATA_REG);
- if (scan_code == 0xfa)
- return 0;
-
- kbd_conv_char(scan_code);
+ if (!kbd_input_empty())
+ return -1;
+ out8(reg, value);
- if (kbd_input != -1)
- return 1;
- }
return 0;
}
-
-/*******************************************************************************
- *
- * i8042_getc - wait till keyboard input is available
- * option: turn on/off cursor while waiting
- */
-int i8042_getc(void)
+static int kbd_read(int reg)
{
- int ret_chr;
- unsigned char scan_code;
-
- while (kbd_input == -1) {
- while ((in8(I8042_STATUS_REG) & 0x01) == 0) {
-#ifdef CONFIG_CONSOLE_CURSOR
- if (--blinkCount == 0) {
- cursor_state ^= 1;
- console_cursor(cursor_state);
- blinkCount = CONFIG_SYS_CONSOLE_BLINK_COUNT;
- }
- udelay(10);
-#endif
- }
- scan_code = in8(I8042_DATA_REG);
- if (scan_code != 0xfa)
- kbd_conv_char (scan_code);
- }
- ret_chr = kbd_input;
- kbd_input = -1;
- return ret_chr;
-}
-
+ if (!kbd_output_full())
+ return -1;
-/******************************************************************************/
+ return in8(reg);
+}
-static void kbd_conv_char(unsigned char scan_code)
+static int kbd_cmd_read(int cmd)
{
- if (scan_code == 0xe0) {
- kbd_flags |= EXT;
- return;
- }
-
- /* if high bit of scan_code, set break flag */
- if (scan_code & 0x80)
- kbd_flags |= BRK;
- else
- kbd_flags &= ~BRK;
-
- if ((scan_code == 0xe1) || (kbd_flags & E1)) {
- if (scan_code == 0xe1) {
- kbd_flags ^= BRK; /* reset the break flag */
- kbd_flags ^= E1; /* bitwise EXOR with E1 flag */
- }
- return;
- }
-
- scan_code &= 0x7f;
-
- if (kbd_flags & EXT) {
- int i;
-
- kbd_flags ^= EXT;
- for (i = 0; ext_key_map[i]; i++) {
- if (ext_key_map[i] == scan_code) {
- scan_code = 0x80 + i;
- break;
- }
- }
- /* not found ? */
- if (!ext_key_map[i])
- return;
- }
+ if (kbd_write(I8042_CMD_REG, cmd))
+ return -1;
- switch (kbd_fct_map[scan_code]) {
- case AS:
- kbd_normal(scan_code);
- break;
- case SH:
- kbd_shift(scan_code);
- break;
- case CN:
- kbd_ctrl(scan_code);
- break;
- case NM:
- kbd_num(scan_code);
- break;
- case CP:
- kbd_caps(scan_code);
- break;
- case ST:
- kbd_scroll(scan_code);
- break;
- case AK:
- kbd_alt(scan_code);
- break;
- }
- return;
+ return kbd_read(I8042_DATA_REG);
}
+static int kbd_cmd_write(int cmd, int data)
+{
+ if (kbd_write(I8042_CMD_REG, cmd))
+ return -1;
-/******************************************************************************/
+ return kbd_write(I8042_DATA_REG, data);
+}
-static void kbd_normal(unsigned char scan_code)
+static int kbd_reset(int quirk)
{
- unsigned char chr;
+ int config;
- if ((kbd_flags & BRK) == NORMAL) {
- chr = kbd_key_map[kbd_mapping][kbd_state][scan_code];
- if ((chr == 0xff) || (chr == 0x00))
- return;
+ /* controller self test */
+ if (kbd_cmd_read(CMD_SELF_TEST) != KBC_TEST_OK)
+ goto err;
- /* if caps lock convert upper to lower */
- if (((kbd_flags & CAPS) == CAPS) &&
- (chr >= 'a' && chr <= 'z')) {
- chr -= 'a' - 'A';
- }
- kbd_input = chr;
- }
-}
+ /* keyboard reset */
+ if (kbd_write(I8042_DATA_REG, CMD_RESET_KBD) ||
+ kbd_read(I8042_DATA_REG) != KBD_ACK ||
+ kbd_read(I8042_DATA_REG) != KBD_POR)
+ goto err;
+ if (kbd_write(I8042_DATA_REG, CMD_DRAIN_OUTPUT) ||
+ kbd_read(I8042_DATA_REG) != KBD_ACK)
+ goto err;
-/******************************************************************************/
+ /* set AT translation and disable irq */
+ config = kbd_cmd_read(CMD_RD_CONFIG);
+ if (config == -1)
+ goto err;
-static void kbd_shift(unsigned char scan_code)
-{
- if ((kbd_flags & BRK) == BRK) {
- kbd_state = AS;
- kbd_flags &= (~SHIFT);
- } else {
- kbd_state = SH;
- kbd_flags |= SHIFT;
- }
-}
+ /* Sometimes get a second byte */
+ else if ((quirk & QUIRK_DUP_POR) && config == KBD_POR)
+ config = kbd_cmd_read(CMD_RD_CONFIG);
+ config |= CONFIG_AT_TRANS;
+ config &= ~(CONFIG_KIRQ_EN | CONFIG_MIRQ_EN);
+ if (kbd_cmd_write(CMD_WR_CONFIG, config))
+ goto err;
-/******************************************************************************/
+ /* enable keyboard */
+ if (kbd_write(I8042_CMD_REG, CMD_KBD_EN) ||
+ !kbd_input_empty())
+ goto err;
-static void kbd_ctrl(unsigned char scan_code)
-{
- if ((kbd_flags & BRK) == BRK) {
- kbd_state = AS;
- kbd_flags &= (~CTRL);
- } else {
- kbd_state = CN;
- kbd_flags |= CTRL;
- }
+ return 0;
+err:
+ debug("%s: Keyboard failure\n", __func__);
+ return -1;
}
-
-/******************************************************************************/
-
-static void kbd_caps(unsigned char scan_code)
+static int kbd_controller_present(void)
{
- if ((kbd_flags & BRK) == NORMAL) {
- kbd_flags ^= CAPS;
- kbd_led_set(); /* update keyboard LED */
- }
+ return in8(I8042_STS_REG) != 0xff;
}
-
-/******************************************************************************/
-
-static void kbd_num(unsigned char scan_code)
+/*
+ * Implement a weak default function for boards that optionally
+ * need to skip the i8042 initialization.
+ *
+ * TODO(sjg@chromium.org): Use device tree for this?
+ */
+int __weak board_i8042_skip(void)
{
- if ((kbd_flags & BRK) == NORMAL) {
- kbd_flags ^= NUM;
- kbd_state = (kbd_flags & NUM) ? AS : NM;
- kbd_led_set(); /* update keyboard LED */
- }
+ /* As default, don't skip */
+ return 0;
}
+void i8042_flush(void)
+{
+ int timeout;
-/******************************************************************************/
+ /*
+ * The delay is to give the keyboard controller some time
+ * to fill the next byte.
+ */
+ while (1) {
+ timeout = 100; /* wait for no longer than 100us */
+ while (timeout > 0 && !(in8(I8042_STS_REG) & STATUS_OBF)) {
+ udelay(1);
+ timeout--;
+ }
-static void kbd_scroll(unsigned char scan_code)
-{
- if ((kbd_flags & BRK) == NORMAL) {
- kbd_flags ^= STP;
- kbd_led_set(); /* update keyboard LED */
- if (kbd_flags & STP)
- kbd_input = 0x13;
+ /* Try to pull next byte if not timeout */
+ if (in8(I8042_STS_REG) & STATUS_OBF)
+ in8(I8042_DATA_REG);
else
- kbd_input = 0x11;
+ break;
}
}
-/******************************************************************************/
-
-static void kbd_alt(unsigned char scan_code)
+int i8042_disable(void)
{
- if ((kbd_flags & BRK) == BRK) {
- kbd_state = AS;
- kbd_flags &= (~ALT);
- } else {
- kbd_state = AK;
- kbd_flags &= ALT;
- }
-}
+ if (kbd_input_empty() == 0)
+ return -1;
+ /* Disable keyboard */
+ out8(I8042_CMD_REG, CMD_KBD_DIS);
-/******************************************************************************/
+ if (kbd_input_empty() == 0)
+ return -1;
-static void kbd_led_set(void)
-{
- kbd_input_empty();
- out8(I8042_DATA_REG, 0xed); /* SET LED command */
- kbd_input_empty();
- out8(I8042_DATA_REG, (kbd_flags & 0x7)); /* LED bits only */
+ return 0;
}
-
-/******************************************************************************/
-
-static int kbd_input_empty(void)
+static int i8042_kbd_check(struct input_config *input)
{
- int kbdTimeout = KBD_TIMEOUT * 1000;
-
- while ((in8(I8042_STATUS_REG) & I8042_STATUS_IN_DATA) && kbdTimeout--)
- udelay(1);
+ struct i8042_kbd_priv *priv = dev_get_priv(input->dev);
- return kbdTimeout != -1;
-}
-
-/******************************************************************************/
-
-static int wait_until_kbd_output_full(void)
-{
- int kbdTimeout = KBD_TIMEOUT * 1000;
+ if ((in8(I8042_STS_REG) & STATUS_OBF) == 0) {
+ return 0;
+ } else {
+ bool release = false;
+ int scan_code;
+ int i;
- while (((in8(I8042_STATUS_REG) & 0x01) == 0) && kbdTimeout--)
- udelay(1);
+ scan_code = in8(I8042_DATA_REG);
+ if (scan_code == 0xfa) {
+ return 0;
+ } else if (scan_code == 0xe0) {
+ priv->extended = true;
+ return 0;
+ }
+ if (scan_code & 0x80) {
+ scan_code &= 0x7f;
+ release = true;
+ }
+ if (priv->extended) {
+ priv->extended = false;
+ for (i = 0; ext_key_map[i]; i++) {
+ if (ext_key_map[i] == scan_code) {
+ scan_code = 0x60 + i;
+ break;
+ }
+ }
+ /* not found ? */
+ if (!ext_key_map[i])
+ return 0;
+ }
- return kbdTimeout != -1;
+ input_add_keycode(input, scan_code, release);
+ return 1;
+ }
}
-/******************************************************************************/
-
-static int kbd_reset(void)
+/* i8042_kbd_init - reset keyboard and init state flags */
+static int i8042_start(struct udevice *dev)
{
- /* KB Reset */
- if (kbd_input_empty() == 0)
- return -1;
-
- out8(I8042_DATA_REG, 0xff);
-
- if (wait_until_kbd_output_full() == 0)
- return -1;
-
- if (in8(I8042_DATA_REG) != 0xfa) /* ACK */
- return -1;
-
- if (wait_until_kbd_output_full() == 0)
- return -1;
-
- if (in8(I8042_DATA_REG) != 0xaa) /* Test Pass*/
- return -1;
+ struct keyboard_priv *uc_priv = dev_get_uclass_priv(dev);
+ struct i8042_kbd_priv *priv = dev_get_priv(dev);
+ struct input_config *input = &uc_priv->input;
+ int keymap, try;
+ char *penv;
+ int ret;
- if (kbd_input_empty() == 0)
- return -1;
+ if (!kbd_controller_present() || board_i8042_skip()) {
+ debug("i8042 keyboard controller is not present\n");
+ return -ENOENT;
+ }
- /* Set KBC mode */
- out8(I8042_COMMAND_REG, 0x60);
+ /* Init keyboard device (default US layout) */
+ keymap = KBD_US;
+ penv = env_get("keymap");
+ if (penv != NULL) {
+ if (strncmp(penv, "de", 3) == 0)
+ keymap = KBD_GER;
+ }
- if (kbd_input_empty() == 0)
- return -1;
+ for (try = 0; kbd_reset(priv->quirks) != 0; try++) {
+ if (try >= KBD_RESET_TRIES)
+ return -1;
+ }
- out8(I8042_DATA_REG, 0x45);
+ ret = input_add_tables(input, keymap == KBD_GER);
+ if (ret)
+ return ret;
- if (kbd_input_empty() == 0)
- return -1;
+ i8042_kbd_update_leds(dev, NORMAL);
+ debug("%s: started\n", __func__);
- /* Enable Keyboard */
- out8(I8042_COMMAND_REG, 0xae);
+ return 0;
+}
- if (kbd_input_empty() == 0)
- return -1;
+/**
+ * Set up the i8042 keyboard. This is called by the stdio device handler
+ *
+ * We want to do this init when the keyboard is actually used rather than
+ * at start-up, since keyboard input may not currently be selected.
+ *
+ * Once the keyboard starts there will be a period during which we must
+ * wait for the keyboard to init. We do this only when a key is first
+ * read - see kbd_wait_for_fifo_init().
+ *
+ * @return 0 if ok, -ve on error
+ */
+static int i8042_kbd_probe(struct udevice *dev)
+{
+ struct keyboard_priv *uc_priv = dev_get_uclass_priv(dev);
+ struct i8042_kbd_priv *priv = dev_get_priv(dev);
+ struct stdio_dev *sdev = &uc_priv->sdev;
+ struct input_config *input = &uc_priv->input;
+ int ret;
+
+ if (fdtdec_get_bool(gd->fdt_blob, dev_of_offset(dev),
+ "intel,duplicate-por"))
+ priv->quirks |= QUIRK_DUP_POR;
+
+ /* Register the device. i8042_start() will be called soon */
+ input->dev = dev;
+ input->read_keys = i8042_kbd_check;
+ input_allow_repeats(input, true);
+ strcpy(sdev->name, "i8042-kbd");
+ ret = input_stdio_register(sdev);
+ if (ret) {
+ debug("%s: input_stdio_register() failed\n", __func__);
+ return ret;
+ }
+ debug("%s: ready\n", __func__);
return 0;
}
+
+static const struct keyboard_ops i8042_kbd_ops = {
+ .start = i8042_start,
+ .update_leds = i8042_kbd_update_leds,
+};
+
+static const struct udevice_id i8042_kbd_ids[] = {
+ { .compatible = "intel,i8042-keyboard" },
+ { }
+};
+
+U_BOOT_DRIVER(i8042_kbd) = {
+ .name = "i8042_kbd",
+ .id = UCLASS_KEYBOARD,
+ .of_match = i8042_kbd_ids,
+ .probe = i8042_kbd_probe,
+ .ops = &i8042_kbd_ops,
+ .priv_auto_alloc_size = sizeof(struct i8042_kbd_priv),
+};
projects / u-boot / blobdiff