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u-boot/board/netphone/phone_console.c
Wolfgang Denk 1a4596601f Add GPL-2.0+ SPDX-License-Identifier to source files 
Signed-off-by: Wolfgang Denk <wd@denx.de>
[trini: Fixup common/cmd_io.c]
Signed-off-by: Tom Rini <trini@ti.com>
2013-07-24 09:44:38 -04:00

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/*
* (C) Copyright 2004 Intracom S.A.
* Pantelis Antoniou <panto@intracom.gr>
*
* SPDX-License-Identifier: GPL-2.0+
*/
/*
* phone_console.c
*
* A phone based console
*
* Virtual display of 80x24 characters.
* The actual display is much smaller and panned to show the virtual one.
* Input is made by a numeric keypad utilizing the input method of
* mobile phones. Sorry no T9 lexicons...
*
*/
#include <common.h>
#include <version.h>
#include <linux/types.h>
#include <stdio_dev.h>
#include <sed156x.h>
/*************************************************************************************************/
#define ROWS 24
#define COLS 80
#define REFRESH_HZ (CONFIG_SYS_HZ/50) /* refresh every 20ms */
#define BLINK_HZ (CONFIG_SYS_HZ/2) /* cursor blink every 500ms */
/*************************************************************************************************/
#define DISPLAY_BACKLIT_PORT ((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat
#define DISPLAY_BACKLIT_MASK 0x0010
/*************************************************************************************************/
#define KP_STABLE_HZ (CONFIG_SYS_HZ/100) /* stable for 10ms */
#define KP_REPEAT_DELAY_HZ (CONFIG_SYS_HZ/4) /* delay before repeat 250ms */
#define KP_REPEAT_HZ (CONFIG_SYS_HZ/20) /* repeat every 50ms */
#define KP_FORCE_DELAY_HZ (CONFIG_SYS_HZ/2) /* key was force pressed */
#define KP_IDLE_DELAY_HZ (CONFIG_SYS_HZ/2) /* key was released and idle */
#if CONFIG_NETPHONE_VERSION == 1
#define KP_SPI_RXD_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat)
#define KP_SPI_RXD_MASK 0x0008
#define KP_SPI_TXD_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat)
#define KP_SPI_TXD_MASK 0x0004
#define KP_SPI_CLK_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_ioport.iop_pcdat)
#define KP_SPI_CLK_MASK 0x0001
#elif CONFIG_NETPHONE_VERSION == 2
#define KP_SPI_RXD_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdat)
#define KP_SPI_RXD_MASK 0x00000008
#define KP_SPI_TXD_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdat)
#define KP_SPI_TXD_MASK 0x00000004
#define KP_SPI_CLK_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pbdat)
#define KP_SPI_CLK_MASK 0x00000002
#endif
#define KP_CS_PORT (((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pedat)
#define KP_CS_MASK 0x00000010
#define KP_SPI_RXD() (KP_SPI_RXD_PORT & KP_SPI_RXD_MASK)
#define KP_SPI_TXD(x) \
do { \
if (x) \
KP_SPI_TXD_PORT |= KP_SPI_TXD_MASK; \
else \
KP_SPI_TXD_PORT &= ~KP_SPI_TXD_MASK; \
} while(0)
#define KP_SPI_CLK(x) \
do { \
if (x) \
KP_SPI_CLK_PORT |= KP_SPI_CLK_MASK; \
else \
KP_SPI_CLK_PORT &= ~KP_SPI_CLK_MASK; \
} while(0)
#define KP_SPI_CLK_TOGGLE() (KP_SPI_CLK_PORT ^= KP_SPI_CLK_MASK)
#define KP_SPI_BIT_DELAY() /* no delay */
#define KP_CS(x) \
do { \
if (x) \
KP_CS_PORT |= KP_CS_MASK; \
else \
KP_CS_PORT &= ~KP_CS_MASK; \
} while(0)
#define KP_ROWS 7
#define KP_COLS 4
#define KP_ROWS_MASK ((1 << KP_ROWS) - 1)
#define KP_COLS_MASK ((1 << KP_COLS) - 1)
#define SCAN 0
#define SCAN_FILTER 1
#define SCAN_COL 2
#define SCAN_COL_FILTER 3
#define PRESSED 4
#define KP_F1 0 /* leftmost dot (tab) */
#define KP_F2 1 /* middle left dot */
#define KP_F3 2 /* up */
#define KP_F4 3 /* middle right dot */
#define KP_F5 4 /* rightmost dot */
#define KP_F6 5 /* C */
#define KP_F7 6 /* left */
#define KP_F8 7 /* down */
#define KP_F9 8 /* right */
#define KP_F10 9 /* enter */
#define KP_F11 10 /* R */
#define KP_F12 11 /* save */
#define KP_F13 12 /* redial */
#define KP_F14 13 /* speaker */
#define KP_F15 14 /* unused */
#define KP_F16 15 /* unused */
#define KP_RELEASE -1 /* key depressed */
#define KP_FORCE -2 /* key was pressed for more than force hz */
#define KP_IDLE -3 /* key was released and idle */
#define KP_1 '1'
#define KP_2 '2'
#define KP_3 '3'
#define KP_4 '4'
#define KP_5 '5'
#define KP_6 '6'
#define KP_7 '7'
#define KP_8 '8'
#define KP_9 '9'
#define KP_0 '0'
#define KP_STAR '*'
#define KP_HASH '#'
/*************************************************************************************************/
static int curs_disabled;
static int curs_col, curs_row;
static int disp_col, disp_row;
static int width, height;
/* the simulated vty buffer */
static char vty_buf[ROWS * COLS];
static char last_visible_buf[ROWS * COLS]; /* worst case */
static char *last_visible_curs_ptr;
static int last_visible_curs_rev;
static int blinked_state;
static int last_input_mode;
static int refresh_time;
static int blink_time;
static char last_fast_punct;
/*************************************************************************************************/
#define IM_SMALL 0
#define IM_CAPITAL 1
#define IM_NUMBER 2
static int input_mode;
static char fast_punct;
static int tab_indicator;
static const char *fast_punct_list = ",.:;*";
static const char *input_mode_txt[] = { "abc", "ABC", "123" };
static const char *punct = ".,!;?'\"-()@/:_+&%*=<>$[]{}\\~^#|";
static const char *whspace = " 0\n";
/* per mode character select (for 2-9) */
static const char *digits_sel[2][8] = {
{ /* small */
"abc2", /* 2 */
"def3", /* 3 */
"ghi4", /* 4 */
"jkl5", /* 5 */
"mno6", /* 6 */
"pqrs7", /* 7 */
"tuv8", /* 8 */
"wxyz9", /* 9 */
}, { /* capital */
"ABC2", /* 2 */
"DEF3", /* 3 */
"GHI4", /* 4 */
"JKL5", /* 5 */
"MNO6", /* 6 */
"PQRS7", /* 7 */
"TUV8", /* 8 */
"WXYZ9", /* 9 */
}
};
/*****************************************************************************/
static void update(void);
static void ensure_visible(int col, int row, int dx, int dy);
static void console_init(void)
{
curs_disabled = 0;
curs_col = 0;
curs_row = 0;
disp_col = 0;
disp_row = 0;
input_mode = IM_SMALL;
fast_punct = ',';
last_fast_punct = '\0';
refresh_time = REFRESH_HZ;
blink_time = BLINK_HZ;
memset(vty_buf, ' ', sizeof(vty_buf));
memset(last_visible_buf, ' ', sizeof(last_visible_buf));
last_visible_curs_ptr = NULL;
last_input_mode = -1;
last_visible_curs_rev = 0;
blinked_state = 0;
sed156x_init();
width = sed156x_text_width;
height = sed156x_text_height - 1;
tab_indicator = 0;
}
/*****************************************************************************/
void phone_putc(const char c);
/*****************************************************************************/
static int queued_char = -1;
static int enabled = 0;
/*****************************************************************************/
/* flush buffers */
int phone_start(void)
{
console_init();
update();
sed156x_sync();
enabled = 1;
queued_char = 'U' - '@';
/* backlit on */
DISPLAY_BACKLIT_PORT &= ~DISPLAY_BACKLIT_MASK;
return 0;
}
int phone_stop(void)
{
enabled = 0;
sed156x_clear();
sed156x_sync();
/* backlit off */
DISPLAY_BACKLIT_PORT |= DISPLAY_BACKLIT_MASK;
return 0;
}
void phone_puts(const char *s)
{
int count = strlen(s);
while (count--)
phone_putc(*s++);
}
int phone_tstc(void)
{
return queued_char >= 0 ? 1 : 0;
}
int phone_getc(void)
{
int r;
if (queued_char < 0)
return -1;
r = queued_char;
queued_char = -1;
return r;
}
/*****************************************************************************/
int drv_phone_init(void)
{
struct stdio_dev console_dev;
console_init();
memset(&console_dev, 0, sizeof(console_dev));
strcpy(console_dev.name, "phone");
console_dev.ext = DEV_EXT_VIDEO; /* Video extensions */
console_dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
console_dev.start = phone_start;
console_dev.stop = phone_stop;
console_dev.putc = phone_putc; /* 'putc' function */
console_dev.puts = phone_puts; /* 'puts' function */
console_dev.tstc = phone_tstc; /* 'tstc' function */
console_dev.getc = phone_getc; /* 'getc' function */
if (stdio_register(&console_dev) == 0)
return 1;
return 0;
}
static int use_me;
int drv_phone_use_me(void)
{
return use_me;
}
static void kp_do_poll(void);
void phone_console_do_poll(void)
{
int i, x, y;
kp_do_poll();
if (enabled) {
/* do the blink */
blink_time -= PHONE_CONSOLE_POLL_HZ;
if (blink_time <= 0) {
blink_time += BLINK_HZ;
if (last_visible_curs_ptr) {
i = last_visible_curs_ptr - last_visible_buf;
x = i % width; y = i / width;
sed156x_reverse_at(x, y, 1);
last_visible_curs_rev ^= 1;
}
}
/* do the refresh */
refresh_time -= PHONE_CONSOLE_POLL_HZ;
if (refresh_time <= 0) {
refresh_time += REFRESH_HZ;
sed156x_sync();
}
}
}
static int last_scancode = -1;
static int forced_scancode = 0;
static int input_state = -1;
static int input_scancode = -1;
static int input_selected_char = -1;
static char input_covered_char;
static void putchar_at_cursor(char c)
{
vty_buf[curs_row * COLS + curs_col] = c;
ensure_visible(curs_col, curs_row, 1, 1);
}
static char getchar_at_cursor(void)
{
return vty_buf[curs_row * COLS + curs_col];
}
static void queue_input_char(char c)
{
if (c <= 0)
return;
queued_char = c;
}
static void terminate_input(void)
{
if (input_state < 0)
return;
if (input_selected_char >= 0)
queue_input_char(input_selected_char);
input_state = -1;
input_selected_char = -1;
putchar_at_cursor(input_covered_char);
curs_disabled = 0;
blink_time = BLINK_HZ;
update();
}
static void handle_enabled_scancode(int scancode)
{
char c;
int new_disp_col, new_disp_row;
const char *sel;
switch (scancode) {
/* key was released */
case KP_RELEASE:
forced_scancode = 0;
break;
/* key was forced */
case KP_FORCE:
switch (last_scancode) {
case '#':
if (input_mode == IM_NUMBER) {
input_mode = IM_CAPITAL;
/* queue backspace to erase # */
queue_input_char('\b');
} else {
input_mode = IM_NUMBER;
fast_punct = '*';
}
update();
break;
case '0': case '1':
case '2': case '3': case '4': case '5':
case '6': case '7': case '8': case '9':
if (input_state < 0)
break;
input_selected_char = last_scancode;
putchar_at_cursor((char)input_selected_char);
terminate_input();
break;
default:
break;
}
break;
/* release and idle */
case KP_IDLE:
input_scancode = -1;
if (input_state < 0)
break;
terminate_input();
break;
/* change input mode */
case '#':
if (last_scancode == '#') /* no repeat */
break;
if (input_mode == IM_NUMBER) {
input_scancode = scancode;
input_state = 0;
input_selected_char = scancode;
input_covered_char = getchar_at_cursor();
putchar_at_cursor((char)input_selected_char);
terminate_input();
break;
}
if (input_mode == IM_SMALL)
input_mode = IM_CAPITAL;
else
input_mode = IM_SMALL;
update();
break;
case '*':
/* no repeat */
if (last_scancode == scancode)
break;
if (input_state >= 0)
terminate_input();
input_scancode = fast_punct;
input_state = 0;
input_selected_char = input_scancode;
input_covered_char = getchar_at_cursor();
putchar_at_cursor((char)input_selected_char);
terminate_input();
break;
case '0': case '1':
case '2': case '3': case '4': case '5':
case '6': case '7': case '8': case '9':
/* no repeat */
if (last_scancode == scancode)
break;
if (input_mode == IM_NUMBER) {
input_scancode = scancode;
input_state = 0;
input_selected_char = scancode;
input_covered_char = getchar_at_cursor();
putchar_at_cursor((char)input_selected_char);
terminate_input();
break;
}
if (input_state >= 0 && input_scancode != scancode)
terminate_input();
if (input_state < 0) {
curs_disabled = 1;
input_scancode = scancode;
input_state = 0;
input_covered_char = getchar_at_cursor();
} else
input_state++;
if (scancode == '0')
sel = whspace;
else if (scancode == '1')
sel = punct;
else
sel = digits_sel[input_mode][scancode - '2'];
c = *(sel + input_state);
if (c == '\0') {
input_state = 0;
c = *sel;
}
input_selected_char = (int)c;
putchar_at_cursor((char)input_selected_char);
update();
break;
/* move visible display */
case KP_F3: case KP_F8: case KP_F7: case KP_F9:
new_disp_col = disp_col;
new_disp_row = disp_row;
switch (scancode) {
/* up */
case KP_F3:
if (new_disp_row <= 0)
break;
new_disp_row--;
break;
/* down */
case KP_F8:
if (new_disp_row >= ROWS - height)
break;
new_disp_row++;
break;
/* left */
case KP_F7:
if (new_disp_col <= 0)
break;
new_disp_col--;
break;
/* right */
case KP_F9:
if (new_disp_col >= COLS - width)
break;
new_disp_col++;
break;
}
/* no change? */
if (disp_col == new_disp_col && disp_row == new_disp_row)
break;
disp_col = new_disp_col;
disp_row = new_disp_row;
update();
break;
case KP_F6: /* backspace */
/* inputing something; no backspace sent, just cancel input */
if (input_state >= 0) {
input_selected_char = -1; /* cancel */
terminate_input();
break;
}
queue_input_char('\b');
break;
case KP_F10: /* enter */
/* inputing something; first cancel input */
if (input_state >= 0)
terminate_input();
queue_input_char('\r');
break;
case KP_F11: /* R -> Ctrl-C (abort) */
if (input_state >= 0)
terminate_input();
queue_input_char('C' - 'Q'); /* ctrl-c */
break;
case KP_F5: /* F% -> Ctrl-U (clear line) */
if (input_state >= 0)
terminate_input();
queue_input_char('U' - 'Q'); /* ctrl-c */
break;
case KP_F1: /* tab */
/* inputing something; first cancel input */
if (input_state >= 0)
terminate_input();
queue_input_char('\t');
break;
case KP_F2: /* change fast punct */
sel = strchr(fast_punct_list, fast_punct);
if (sel == NULL)
sel = &fast_punct_list[0];
sel++;
if (*sel == '\0')
sel = &fast_punct_list[0];
fast_punct = *sel;
update();
break;
}
if (scancode != KP_FORCE && scancode != KP_IDLE) /* don't record forced or idle scancode */
last_scancode = scancode;
}
static void scancode_action(int scancode)
{
#if 0
if (scancode == KP_RELEASE)
printf(" RELEASE\n");
else if (scancode == KP_FORCE)
printf(" FORCE\n");
else if (scancode == KP_IDLE)
printf(" IDLE\n");
else if (scancode < 32)
printf(" F%d", scancode + 1);
else
printf(" %c", (char)scancode);
printf("\n");
#endif
if (enabled) {
handle_enabled_scancode(scancode);
return;
}
if (scancode == KP_FORCE && last_scancode == '*')
use_me = 1;
last_scancode = scancode;
}
/**************************************************************************************/
/* update the display; make sure to update only the differences */
static void update(void)
{
int i;
char *s, *e, *t, *r, *b, *cp;
if (input_mode != last_input_mode)
sed156x_output_at(sed156x_text_width - 3, sed156x_text_height - 1, input_mode_txt[input_mode], 3);
if (tab_indicator == 0) {
sed156x_output_at(0, sed156x_text_height - 1, "\\t", 2);
tab_indicator = 1;
}
if (fast_punct != last_fast_punct)
sed156x_output_at(4, sed156x_text_height - 1, &fast_punct, 1);
if (curs_disabled ||
curs_col < disp_col || curs_col >= (disp_col + width) ||
curs_row < disp_row || curs_row >= (disp_row + height)) {
cp = NULL;
} else
cp = last_visible_buf + (curs_row - disp_row) * width + (curs_col - disp_col);
/* printf("(%d,%d) (%d,%d) %s\n", curs_col, curs_row, disp_col, disp_row, cp ? "YES" : "no"); */
/* clear previous cursor */
if (last_visible_curs_ptr && last_visible_curs_rev == 0) {
i = last_visible_curs_ptr - last_visible_buf;
sed156x_reverse_at(i % width, i / width, 1);
}
b = vty_buf + disp_row * COLS + disp_col;
t = last_visible_buf;
for (i = 0; i < height; i++) {
s = b;
e = b + width;
/* update only the differences */
do {
while (s < e && *s == *t) {
s++;
t++;
}
if (s == e) /* no more */
break;
/* find run */
r = s;
while (s < e && *s != *t)
*t++ = *s++;
/* and update */
sed156x_output_at(r - b, i, r, s - r);
} while (s < e);
b += COLS;
}
/* set cursor */
if (cp) {
last_visible_curs_ptr = cp;
i = last_visible_curs_ptr - last_visible_buf;
sed156x_reverse_at(i % width, i / width, 1);
last_visible_curs_rev = 0;
} else {
last_visible_curs_ptr = NULL;
}
last_input_mode = input_mode;
last_fast_punct = fast_punct;
}
/* ensure visibility; the trick is to minimize the screen movement */
static void ensure_visible(int col, int row, int dx, int dy)
{
int x1, y1, x2, y2, a1, b1, a2, b2;
/* clamp visible region */
if (col < 0) {
dx -= col;
col = 0;
if (dx <= 0)
dx = 1;
}
if (row < 0) {
dy -= row;
row = 0;
if (dy <= 0)
dy = 1;
}
if (col + dx > COLS)
dx = COLS - col;
if (row + dy > ROWS)
dy = ROWS - row;
/* move to easier to use vars */
x1 = disp_col; y1 = disp_row;
x2 = x1 + width; y2 = y1 + height;
a1 = col; b1 = row;
a2 = a1 + dx; b2 = b1 + dy;
/* printf("(%d,%d) - (%d,%d) : (%d, %d) - (%d, %d)\n", x1, y1, x2, y2, a1, b1, a2, b2); */
if (a2 > x2) {
/* move to the right */
x2 = a2;
x1 = x2 - width;
if (x1 < 0) {
x1 = 0;
x2 = width;
}
} else if (a1 < x1) {
/* move to the left */
x1 = a1;
x2 = x1 + width;
if (x2 > COLS) {
x2 = COLS;
x1 = x2 - width;
}
}
if (b2 > y2) {
/* move down */
y2 = b2;
y1 = y2 - height;
if (y1 < 0) {
y1 = 0;
y2 = height;
}
} else if (b1 < y1) {
/* move up */
y1 = b1;
y2 = y1 + width;
if (y2 > ROWS) {
y2 = ROWS;
y1 = y2 - height;
}
}
/* printf("(%d,%d) - (%d,%d) : (%d, %d) - (%d, %d)\n", x1, y1, x2, y2, a1, b1, a2, b2); */
/* no movement? */
if (disp_col == x1 && disp_row == y1)
return;
disp_col = x1;
disp_row = y1;
}
/**************************************************************************************/
static void newline(void)
{
curs_col = 0;
if (curs_row + 1 < ROWS)
curs_row++;
else {
memmove(vty_buf, vty_buf + COLS, COLS * (ROWS - 1));
memset(vty_buf + (ROWS - 1) * COLS, ' ', COLS);
}
}
void phone_putc(const char c)
{
int i;
if (input_mode != -1) {
input_selected_char = -1;
terminate_input();
}
curs_disabled = 1;
update();
blink_time = BLINK_HZ;
switch (c) {
case '\a': /* ignore bell */
case '\r': /* ignore carriage return */
break;
case '\n': /* next line */
newline();
ensure_visible(curs_col, curs_row, 1, 1);
break;
case 9: /* tab 8 */
/* move to tab */
i = curs_col;
i |= 0x0008;
i &= ~0x0007;
if (i < COLS)
curs_col = i;
else
newline();
ensure_visible(curs_col, curs_row, 1, 1);
break;
case 8: /* backspace */
if (curs_col <= 0)
break;
curs_col--;
/* make sure that we see a couple of characters before */
if (curs_col > 4)
ensure_visible(curs_col - 4, curs_row, 4, 1);
else
ensure_visible(curs_col, curs_row, 1, 1);
break;
default: /* draw the char */
putchar_at_cursor(c);
/*
* check for newline
*/
if (curs_col + 1 < COLS)
curs_col++;
else
newline();
ensure_visible(curs_col, curs_row, 1, 1);
break;
}
curs_disabled = 0;
blink_time = BLINK_HZ;
update();
}
/**************************************************************************************/
static inline unsigned int kp_transfer(unsigned int val)
{
unsigned int rx;
int b;
rx = 0; b = 8;
while (--b >= 0) {
KP_SPI_TXD(val & 0x80);
val <<= 1;
KP_SPI_CLK_TOGGLE();
KP_SPI_BIT_DELAY();
rx <<= 1;
if (KP_SPI_RXD())
rx |= 1;
KP_SPI_CLK_TOGGLE();
KP_SPI_BIT_DELAY();
}
return rx;
}
unsigned int kp_data_transfer(unsigned int val)
{
KP_SPI_CLK(1);
KP_CS(0);
val = kp_transfer(val);
KP_CS(1);
return val;
}
unsigned int kp_get_col_mask(unsigned int row_mask)
{
unsigned int val, col_mask;
val = 0x80 | (row_mask & 0x7F);
(void)kp_data_transfer(val);
#if CONFIG_NETPHONE_VERSION == 1
col_mask = kp_data_transfer(val) & 0x0F;
#elif CONFIG_NETPHONE_VERSION == 2
col_mask = ((volatile immap_t *)CONFIG_SYS_IMMR)->im_cpm.cp_pedat & 0x0f;
/* XXX FUCK FUCK FUCK FUCK FUCK!!!! */
col_mask = ((col_mask & 0x08) >> 3) | /* BKBR1 */
((col_mask & 0x04) << 1) | /* BKBR2 */
(col_mask & 0x02) | /* BKBR3 */
((col_mask & 0x01) << 2); /* BKBR4 */
#endif
/* printf("col_mask(row_mask = 0x%x) -> col_mask = 0x%x\n", row_mask, col_mask); */
return col_mask;
}
/**************************************************************************************/
static const int kp_scancodes[KP_ROWS * KP_COLS] = {
KP_F1, KP_F3, KP_F4, KP_F2,
KP_F6, KP_F8, KP_F9, KP_F7,
KP_1, KP_3, KP_F11, KP_2,
KP_4, KP_6, KP_F12, KP_5,
KP_7, KP_9, KP_F13, KP_8,
KP_STAR, KP_HASH, KP_F14, KP_0,
KP_F5, KP_F15, KP_F16, KP_F10,
};
static const int kp_repeats[KP_ROWS * KP_COLS] = {
0, 1, 0, 0,
0, 1, 1, 1,
1, 1, 0, 1,
1, 1, 0, 1,
1, 1, 0, 1,
1, 1, 0, 1,
0, 0, 0, 1,
};
static int kp_state = SCAN;
static int kp_last_col_mask;
static int kp_cur_row, kp_cur_col;
static int kp_scancode;
static int kp_stable;
static int kp_repeat;
static int kp_repeat_time;
static int kp_force_time;
static int kp_idle_time;
static void kp_do_poll(void)
{
unsigned int col_mask;
int col;
switch (kp_state) {
case SCAN:
if (kp_idle_time > 0) {
kp_idle_time -= PHONE_CONSOLE_POLL_HZ;
if (kp_idle_time <= 0)
scancode_action(KP_IDLE);
}
col_mask = kp_get_col_mask(KP_ROWS_MASK);
if (col_mask == KP_COLS_MASK)
break; /* nothing */
kp_last_col_mask = col_mask;
kp_stable = 0;
kp_state = SCAN_FILTER;
break;
case SCAN_FILTER:
col_mask = kp_get_col_mask(KP_ROWS_MASK);
if (col_mask != kp_last_col_mask) {
kp_state = SCAN;
break;
}
kp_stable += PHONE_CONSOLE_POLL_HZ;
if (kp_stable < KP_STABLE_HZ)
break;
kp_cur_row = 0;
kp_stable = 0;
kp_state = SCAN_COL;
(void)kp_get_col_mask(1 << kp_cur_row);
break;
case SCAN_COL:
col_mask = kp_get_col_mask(1 << kp_cur_row);
if (col_mask == KP_COLS_MASK) {
if (++kp_cur_row >= KP_ROWS) {
kp_state = SCAN;
break;
}
kp_get_col_mask(1 << kp_cur_row);
break;
}
kp_last_col_mask = col_mask;
kp_stable = 0;
kp_state = SCAN_COL_FILTER;
break;
case SCAN_COL_FILTER:
col_mask = kp_get_col_mask(1 << kp_cur_row);
if (col_mask != kp_last_col_mask || col_mask == KP_COLS_MASK) {
kp_state = SCAN;
break;
}
kp_stable += PHONE_CONSOLE_POLL_HZ;
if (kp_stable < KP_STABLE_HZ)
break;
for (col = 0; col < KP_COLS; col++)
if ((col_mask & (1 << col)) == 0)
break;
kp_cur_col = col;
kp_state = PRESSED;
kp_scancode = kp_scancodes[kp_cur_row * KP_COLS + kp_cur_col];
kp_repeat = kp_repeats[kp_cur_row * KP_COLS + kp_cur_col];
if (kp_repeat)
kp_repeat_time = KP_REPEAT_DELAY_HZ;
kp_force_time = KP_FORCE_DELAY_HZ;
scancode_action(kp_scancode);
break;
case PRESSED:
col_mask = kp_get_col_mask(1 << kp_cur_row);
if (col_mask != kp_last_col_mask) {
kp_state = SCAN;
scancode_action(KP_RELEASE);
kp_idle_time = KP_IDLE_DELAY_HZ;
break;
}
if (kp_repeat) {
kp_repeat_time -= PHONE_CONSOLE_POLL_HZ;
if (kp_repeat_time <= 0) {
kp_repeat_time += KP_REPEAT_HZ;
scancode_action(kp_scancode);
}
}
if (kp_force_time > 0) {
kp_force_time -= PHONE_CONSOLE_POLL_HZ;
if (kp_force_time <= 0)
scancode_action(KP_FORCE);
}
break;
}
}
/**************************************************************************************/
int drv_phone_is_idle(void)
{
return kp_state == SCAN;
}
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