X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=drivers%2Finput%2Fi8042.c;h=661d7fd86c44a90f95ee9aba7cd0295852fb2a0e;hb=b4857aa90105ea85bf029f8eb99e72fbadc0e2d0;hp=ca1604c5401513686699272cb84f879cdb5e01f4;hpb=b1cdd8baa14f518288ceddb391d6587c1ecb3174;p=u-boot diff --git a/drivers/input/i8042.c b/drivers/input/i8042.c index ca1604c540..661d7fd86c 100644 --- a/drivers/input/i8042.c +++ b/drivers/input/i8042.c @@ -7,276 +7,29 @@ /* i8042.c - Intel 8042 keyboard driver routines */ -/* includes */ - #include -#include - -#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 +#include #include +#include +#include +#include + +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 */ @@ -298,16 +51,124 @@ static unsigned char ext_key_map[] = { 0x00 /* map end */ }; -/******************************************************************************/ +static int kbd_input_empty(void) +{ + int kbd_timeout = KBD_TIMEOUT * 1000; + + while ((in8(I8042_STS_REG) & STATUS_IBF) && kbd_timeout--) + udelay(1); + + return kbd_timeout != -1; +} + +static int kbd_output_full(void) +{ + int kbd_timeout = KBD_TIMEOUT * 1000; + + while (((in8(I8042_STS_REG) & STATUS_OBF) == 0) && kbd_timeout--) + udelay(1); + + return kbd_timeout != -1; +} + +/** + * check_leds() - Check the keyboard LEDs and update them it needed + * + * @ret: Value to return + * @return value of @ret + */ +static int i8042_kbd_update_leds(struct udevice *dev, int leds) +{ + kbd_input_empty(); + out8(I8042_DATA_REG, CMD_SET_KBD_LED); + kbd_input_empty(); + out8(I8042_DATA_REG, leds & 0x7); + + return 0; +} + +static int kbd_write(int reg, int value) +{ + if (!kbd_input_empty()) + return -1; + out8(reg, value); + + return 0; +} + +static int kbd_read(int reg) +{ + if (!kbd_output_full()) + return -1; + + return in8(reg); +} + +static int kbd_cmd_read(int cmd) +{ + if (kbd_write(I8042_CMD_REG, cmd)) + return -1; + + 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 int kbd_reset(int quirk) +{ + int config; + + /* controller self test */ + if (kbd_cmd_read(CMD_SELF_TEST) != KBC_TEST_OK) + goto err; + + /* 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; + + /* set AT translation and disable irq */ + config = kbd_cmd_read(CMD_RD_CONFIG); + if (config == -1) + goto err; + + /* 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; + + return 0; +err: + debug("%s: Keyboard failure\n", __func__); + return -1; +} static int kbd_controller_present(void) { - return in8(I8042_STATUS_REG) != 0xff; + return in8(I8042_STS_REG) != 0xff; } /* * 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) { @@ -320,18 +181,18 @@ void i8042_flush(void) int timeout; /* - * The delay is to give the keyboard controller some time to fill the - * next byte. + * 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)) { + timeout = 100; /* wait for no longer than 100us */ + while (timeout > 0 && !(in8(I8042_STS_REG) & STATUS_OBF)) { udelay(1); timeout--; } - /* Try to pull next byte if not timeout. */ - if (in8(I8042_STATUS_REG) & 0x01) + /* Try to pull next byte if not timeout */ + if (in8(I8042_STS_REG) & STATUS_OBF) in8(I8042_DATA_REG); else break; @@ -344,7 +205,7 @@ int i8042_disable(void) return -1; /* Disable keyboard */ - out8(I8042_COMMAND_REG, 0xad); + out8(I8042_CMD_REG, CMD_KBD_DIS); if (kbd_input_empty() == 0) return -1; @@ -352,355 +213,138 @@ int i8042_disable(void) return 0; } - -/******************************************************************************* - * - * i8042_kbd_init - reset keyboard and init state flags - */ -int i8042_kbd_init(void) +static int i8042_kbd_check(struct input_config *input) { - int keymap, try; - char *penv; + struct i8042_kbd_priv *priv = dev_get_priv(input->dev); - 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; - } - - 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; -} - - -/******************************************************************************* - * - * i8042_tstc - test if keyboard input is available - * option: cursor blinking if called in a loop - */ -int i8042_tstc(struct stdio_dev *dev) -{ - 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) { + if ((in8(I8042_STS_REG) & STATUS_OBF) == 0) { return 0; } else { + bool release = false; + int scan_code; + int i; + scan_code = in8(I8042_DATA_REG); - if (scan_code == 0xfa) + if (scan_code == 0xfa) { + return 0; + } else if (scan_code == 0xe0) { + priv->extended = true; return 0; - - kbd_conv_char(scan_code); - - 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(struct stdio_dev *dev) -{ - 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; -} - - -/******************************************************************************/ - -static void kbd_conv_char(unsigned char scan_code) -{ - 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 */ + if (scan_code & 0x80) { + scan_code &= 0x7f; + release = true; } - 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; + 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; } - /* not found ? */ - if (!ext_key_map[i]) - return; - } - 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; + input_add_keycode(input, scan_code, release); + return 1; } - return; } - -/******************************************************************************/ - -static void kbd_normal(unsigned char scan_code) +/* i8042_kbd_init - reset keyboard and init state flags */ +static int i8042_start(struct udevice *dev) { - unsigned char chr; - - if ((kbd_flags & BRK) == NORMAL) { - chr = kbd_key_map[kbd_mapping][kbd_state][scan_code]; - if ((chr == 0xff) || (chr == 0x00)) - return; - - /* if caps lock convert upper to lower */ - if (((kbd_flags & CAPS) == CAPS) && - (chr >= 'a' && chr <= 'z')) { - chr -= 'a' - 'A'; - } - kbd_input = chr; - } -} - - -/******************************************************************************/ - -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; - } -} - - -/******************************************************************************/ + 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; -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; + if (!kbd_controller_present() || board_i8042_skip()) { + debug("i8042 keyboard controller is not present\n"); + return -ENOENT; } -} - - -/******************************************************************************/ -static void kbd_caps(unsigned char scan_code) -{ - if ((kbd_flags & BRK) == NORMAL) { - kbd_flags ^= CAPS; - kbd_led_set(); /* update keyboard LED */ + /* Init keyboard device (default US layout) */ + keymap = KBD_US; + penv = getenv("keymap"); + if (penv != NULL) { + if (strncmp(penv, "de", 3) == 0) + keymap = KBD_GER; } -} - -/******************************************************************************/ - -static void kbd_num(unsigned char scan_code) -{ - if ((kbd_flags & BRK) == NORMAL) { - kbd_flags ^= NUM; - kbd_state = (kbd_flags & NUM) ? AS : NM; - kbd_led_set(); /* update keyboard LED */ + for (try = 0; kbd_reset(priv->quirks) != 0; try++) { + if (try >= KBD_RESET_TRIES) + return -1; } -} + ret = input_add_tables(input, keymap == KBD_GER); + if (ret) + return ret; -/******************************************************************************/ + i8042_kbd_update_leds(dev, NORMAL); + debug("%s: started\n", __func__); -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; - else - kbd_input = 0x11; - } + return 0; } -/******************************************************************************/ - -static void kbd_alt(unsigned char scan_code) +/** + * 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) { - if ((kbd_flags & BRK) == BRK) { - kbd_state = AS; - kbd_flags &= (~ALT); - } else { - kbd_state = AK; - kbd_flags &= ALT; + 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, + "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; } -} - - -/******************************************************************************/ - -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 */ -} - - -/******************************************************************************/ - -static int kbd_input_empty(void) -{ - int kbdTimeout = KBD_TIMEOUT * 1000; - - while ((in8(I8042_STATUS_REG) & I8042_STATUS_IN_DATA) && kbdTimeout--) - udelay(1); - - return kbdTimeout != -1; -} - -/******************************************************************************/ - -static int wait_until_kbd_output_full(void) -{ - int kbdTimeout = KBD_TIMEOUT * 1000; - - while (((in8(I8042_STATUS_REG) & 0x01) == 0) && kbdTimeout--) - udelay(1); - - return kbdTimeout != -1; -} - -/******************************************************************************/ - -static int kbd_reset(void) -{ - /* 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; - - if (kbd_input_empty() == 0) - return -1; - - /* Set KBC mode */ - out8(I8042_COMMAND_REG, 0x60); - - if (kbd_input_empty() == 0) - return -1; - - out8(I8042_DATA_REG, 0x45); - - if (kbd_input_empty() == 0) - return -1; - - /* Enable Keyboard */ - out8(I8042_COMMAND_REG, 0xae); - - if (kbd_input_empty() == 0) - return -1; + 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), +};