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Diffstat (limited to 'board/lwmon5/kbd.c')
-rw-r--r--board/lwmon5/kbd.c490
1 files changed, 0 insertions, 490 deletions
diff --git a/board/lwmon5/kbd.c b/board/lwmon5/kbd.c
deleted file mode 100644
index 97962daf93..0000000000
--- a/board/lwmon5/kbd.c
+++ /dev/null
@@ -1,490 +0,0 @@
-/*
- * (C) Copyright 2007
- * Stefan Roese, DENX Software Engineering, sr@denx.de.
- *
- * (C) Copyright 2001, 2002
- * DENX Software Engineering
- * Wolfgang Denk, wd@denx.de
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-/* define DEBUG for debugging output (obviously ;-)) */
-#if 0
-#define DEBUG
-#endif
-
-#include <common.h>
-#include <i2c.h>
-#include <command.h>
-#include <post.h>
-#include <serial.h>
-#include <malloc.h>
-
-#include <linux/types.h>
-#include <linux/string.h> /* for strdup */
-
-DECLARE_GLOBAL_DATA_PTR;
-
-static void kbd_init (void);
-static int compare_magic (uchar *kbd_data, uchar *str);
-
-/*--------------------- Local macros and constants --------------------*/
-#define _NOT_USED_ 0xFFFFFFFF
-
-/*------------------------- dspic io expander -----------------------*/
-#define DSPIC_PON_STATUS_REG 0x80A
-#define DSPIC_PON_INV_STATUS_REG 0x80C
-#define DSPIC_PON_KEY_REG 0x810
-/*------------------------- Keyboard controller -----------------------*/
-/* command codes */
-#define KEYBD_CMD_READ_KEYS 0x01
-#define KEYBD_CMD_READ_VERSION 0x02
-#define KEYBD_CMD_READ_STATUS 0x03
-#define KEYBD_CMD_RESET_ERRORS 0x10
-
-/* status codes */
-#define KEYBD_STATUS_MASK 0x3F
-#define KEYBD_STATUS_H_RESET 0x20
-#define KEYBD_STATUS_BROWNOUT 0x10
-#define KEYBD_STATUS_WD_RESET 0x08
-#define KEYBD_STATUS_OVERLOAD 0x04
-#define KEYBD_STATUS_ILLEGAL_WR 0x02
-#define KEYBD_STATUS_ILLEGAL_RD 0x01
-
-/* Number of bytes returned from Keyboard Controller */
-#define KEYBD_VERSIONLEN 2 /* version information */
-
-/*
- * This is different from the "old" lwmon dsPIC kbd controller
- * implementation. Now the controller still answers with 9 bytes,
- * but the last 3 bytes are always "0x06 0x07 0x08". So we just
- * set the length to compare to 6 instead of 9.
- */
-#define KEYBD_DATALEN 6 /* normal key scan data */
-
-/* maximum number of "magic" key codes that can be assigned */
-
-static uchar kbd_addr = CONFIG_SYS_I2C_KEYBD_ADDR;
-static uchar dspic_addr = CONFIG_SYS_I2C_DSPIC_IO_ADDR;
-
-static uchar *key_match (uchar *);
-
-#define KEYBD_SET_DEBUGMODE '#' /* Magic key to enable debug output */
-
-/***********************************************************************
-F* Function: int board_postclk_init (void) P*A*Z*
- *
-P* Parameters: none
-P*
-P* Returnvalue: int
-P* - 0 is always returned.
- *
-Z* Intention: This function is the board_postclk_init() method implementation
-Z* for the lwmon board.
- *
- ***********************************************************************/
-int board_postclk_init (void)
-{
- kbd_init();
-
- return (0);
-}
-
-static void kbd_init (void)
-{
- uchar kbd_data[KEYBD_DATALEN];
- uchar tmp_data[KEYBD_DATALEN];
- uchar val, errcd;
- int i;
-
- i2c_set_bus_num(0);
-
- gd->arch.kbd_status = 0;
-
- /* Forced by PIC. Delays <= 175us loose */
- udelay(1000);
-
- /* Read initial keyboard error code */
- val = KEYBD_CMD_READ_STATUS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, &errcd, 1);
- /* clear unused bits */
- errcd &= KEYBD_STATUS_MASK;
- /* clear "irrelevant" bits. Recommended by Martin Rajek, LWN */
- errcd &= ~(KEYBD_STATUS_H_RESET|KEYBD_STATUS_BROWNOUT);
- if (errcd) {
- gd->arch.kbd_status |= errcd << 8;
- }
- /* Reset error code and verify */
- val = KEYBD_CMD_RESET_ERRORS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- udelay(1000); /* delay NEEDED by keyboard PIC !!! */
-
- val = KEYBD_CMD_READ_STATUS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, &val, 1);
-
- val &= KEYBD_STATUS_MASK; /* clear unused bits */
- if (val) { /* permanent error, report it */
- gd->arch.kbd_status |= val;
- return;
- }
-
- /*
- * Read current keyboard state.
- *
- * After the error reset it may take some time before the
- * keyboard PIC picks up a valid keyboard scan - the total
- * scan time is approx. 1.6 ms (information by Martin Rajek,
- * 28 Sep 2002). We read a couple of times for the keyboard
- * to stabilize, using a big enough delay.
- * 10 times should be enough. If the data is still changing,
- * we use what we get :-(
- */
-
- memset (tmp_data, 0xFF, KEYBD_DATALEN); /* impossible value */
- for (i=0; i<10; ++i) {
- val = KEYBD_CMD_READ_KEYS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
-
- if (memcmp(kbd_data, tmp_data, KEYBD_DATALEN) == 0) {
- /* consistent state, done */
- break;
- }
- /* remeber last state, delay, and retry */
- memcpy (tmp_data, kbd_data, KEYBD_DATALEN);
- udelay (5000);
- }
-}
-
-
-/* Read a register from the dsPIC. */
-int _dspic_read(ushort reg, ushort *data)
-{
- uchar buf[sizeof(*data)];
- int rval;
-
- if (i2c_read(dspic_addr, reg, 2, buf, 2))
- return -1;
-
- rval = i2c_read(dspic_addr, reg, sizeof(reg), buf, sizeof(*data));
- *data = (buf[0] << 8) | buf[1];
-
- return rval;
-}
-
-
-/***********************************************************************
-F* Function: int misc_init_r (void) P*A*Z*
- *
-P* Parameters: none
-P*
-P* Returnvalue: int
-P* - 0 is always returned, even in the case of a keyboard
-P* error.
- *
-Z* Intention: This function is the misc_init_r() method implementation
-Z* for the lwmon board.
-Z* The keyboard controller is initialized and the result
-Z* of a read copied to the environment variable "keybd".
-Z* If KEYBD_SET_DEBUGMODE is defined, a check is made for
-Z* this key, and if found display to the LCD will be enabled.
-Z* The keys in "keybd" are checked against the magic
-Z* keycommands defined in the environment.
-Z* See also key_match().
- *
-D* Design: wd@denx.de
-C* Coding: wd@denx.de
-V* Verification: dzu@denx.de
- ***********************************************************************/
-int misc_init_r_kbd (void)
-{
- uchar kbd_data[KEYBD_DATALEN];
- char keybd_env[2 * KEYBD_DATALEN + 1];
- uchar kbd_init_status = gd->arch.kbd_status >> 8;
- uchar kbd_status = gd->arch.kbd_status;
- uchar val;
- ushort data, inv_data;
- char *str;
- int i;
-
- if (kbd_init_status) {
- printf ("KEYBD: Error %02X\n", kbd_init_status);
- }
- if (kbd_status) { /* permanent error, report it */
- printf ("*** Keyboard error code %02X ***\n", kbd_status);
- sprintf (keybd_env, "%02X", kbd_status);
- setenv ("keybd", keybd_env);
- return 0;
- }
-
- /*
- * Now we know that we have a working keyboard, so disable
- * all output to the LCD except when a key press is detected.
- */
-
- if ((console_assign (stdout, "serial") < 0) ||
- (console_assign (stderr, "serial") < 0)) {
- printf ("Can't assign serial port as output device\n");
- }
-
- /* Read Version */
- val = KEYBD_CMD_READ_VERSION;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_VERSIONLEN);
- printf ("KEYBD: Version %d.%d\n", kbd_data[0], kbd_data[1]);
-
- /* Read current keyboard state */
- val = KEYBD_CMD_READ_KEYS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
-
- /* read out start key from bse01 received via can */
- _dspic_read(DSPIC_PON_STATUS_REG, &data);
- /* check highbyte from status register */
- if (data > 0xFF) {
- _dspic_read(DSPIC_PON_INV_STATUS_REG, &inv_data);
-
- /* check inverse data */
- if ((data+inv_data) == 0xFFFF) {
- /* don't overwrite local key */
- if (kbd_data[1] == 0) {
- /* read key value */
- _dspic_read(DSPIC_PON_KEY_REG, &data);
- str = (char *)&data;
- /* swap bytes */
- kbd_data[1] = str[1];
- kbd_data[2] = str[0];
- printf("CAN received startkey: 0x%X\n", data);
- }
- }
- }
-
- for (i = 0; i < KEYBD_DATALEN; ++i) {
- sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
- }
-
- setenv ("keybd", keybd_env);
-
- str = strdup ((char *)key_match (kbd_data)); /* decode keys */
-#ifdef KEYBD_SET_DEBUGMODE
- if (kbd_data[0] == KEYBD_SET_DEBUGMODE) { /* set debug mode */
- if ((console_assign (stdout, "lcd") < 0) ||
- (console_assign (stderr, "lcd") < 0)) {
- printf ("Can't assign LCD display as output device\n");
- }
- }
-#endif /* KEYBD_SET_DEBUGMODE */
-#ifdef CONFIG_PREBOOT /* automatically configure "preboot" command on key match */
- setenv ("preboot", str); /* set or delete definition */
-#endif /* CONFIG_PREBOOT */
- if (str != NULL) {
- free (str);
- }
- return (0);
-}
-
-#ifdef CONFIG_PREBOOT
-
-static uchar kbd_magic_prefix[] = "key_magic";
-static uchar kbd_command_prefix[] = "key_cmd";
-
-static int compare_magic (uchar *kbd_data, uchar *str)
-{
- uchar compare[KEYBD_DATALEN-1];
- char *nxt;
- int i;
-
- /* Don't include modifier byte */
- memcpy (compare, kbd_data+1, KEYBD_DATALEN-1);
-
- for (; str != NULL; str = (*nxt) ? (uchar *)(nxt+1) : (uchar *)nxt) {
- uchar c;
- int k;
-
- c = (uchar) simple_strtoul ((char *)str, (char **) (&nxt), 16);
-
- if (str == (uchar *)nxt) { /* invalid character */
- break;
- }
-
- /*
- * Check if this key matches the input.
- * Set matches to zero, so they match only once
- * and we can find duplicates or extra keys
- */
- for (k = 0; k < sizeof(compare); ++k) {
- if (compare[k] == '\0') /* only non-zero entries */
- continue;
- if (c == compare[k]) { /* found matching key */
- compare[k] = '\0';
- break;
- }
- }
- if (k == sizeof(compare)) {
- return -1; /* unmatched key */
- }
- }
-
- /*
- * A full match leaves no keys in the `compare' array,
- */
- for (i = 0; i < sizeof(compare); ++i) {
- if (compare[i])
- {
- return -1;
- }
- }
-
- return 0;
-}
-
-/***********************************************************************
-F* Function: static uchar *key_match (uchar *kbd_data) P*A*Z*
- *
-P* Parameters: uchar *kbd_data
-P* - The keys to match against our magic definitions
-P*
-P* Returnvalue: uchar *
-P* - != NULL: Pointer to the corresponding command(s)
-P* NULL: No magic is about to happen
- *
-Z* Intention: Check if pressed key(s) match magic sequence,
-Z* and return the command string associated with that key(s).
-Z*
-Z* If no key press was decoded, NULL is returned.
-Z*
-Z* Note: the first character of the argument will be
-Z* overwritten with the "magic charcter code" of the
-Z* decoded key(s), or '\0'.
-Z*
-Z* Note: the string points to static environment data
-Z* and must be saved before you call any function that
-Z* modifies the environment.
- *
-D* Design: wd@denx.de
-C* Coding: wd@denx.de
-V* Verification: dzu@denx.de
- ***********************************************************************/
-static uchar *key_match (uchar *kbd_data)
-{
- char magic[sizeof (kbd_magic_prefix) + 1];
- uchar *suffix;
- char *kbd_magic_keys;
-
- /*
- * The following string defines the characters that can pe appended
- * to "key_magic" to form the names of environment variables that
- * hold "magic" key codes, i. e. such key codes that can cause
- * pre-boot actions. If the string is empty (""), then only
- * "key_magic" is checked (old behaviour); the string "125" causes
- * checks for "key_magic1", "key_magic2" and "key_magic5", etc.
- */
- if ((kbd_magic_keys = getenv ("magic_keys")) == NULL)
- kbd_magic_keys = "";
-
- /* loop over all magic keys;
- * use '\0' suffix in case of empty string
- */
- for (suffix=(uchar *)kbd_magic_keys; *suffix || suffix==(uchar *)kbd_magic_keys; ++suffix) {
- sprintf (magic, "%s%c", kbd_magic_prefix, *suffix);
- debug ("### Check magic \"%s\"\n", magic);
- if (compare_magic(kbd_data, (uchar *)getenv(magic)) == 0) {
- char cmd_name[sizeof (kbd_command_prefix) + 1];
- char *cmd;
-
- sprintf (cmd_name, "%s%c", kbd_command_prefix, *suffix);
-
- cmd = getenv (cmd_name);
- debug ("### Set PREBOOT to $(%s): \"%s\"\n",
- cmd_name, cmd ? cmd : "<<NULL>>");
- *kbd_data = *suffix;
- return ((uchar *)cmd);
- }
- }
- debug ("### Delete PREBOOT\n");
- *kbd_data = '\0';
- return (NULL);
-}
-#endif /* CONFIG_PREBOOT */
-
-/***********************************************************************
-F* Function: int do_kbd (cmd_tbl_t *cmdtp, int flag,
-F* int argc, char * const argv[]) P*A*Z*
- *
-P* Parameters: cmd_tbl_t *cmdtp
-P* - Pointer to our command table entry
-P* int flag
-P* - If the CMD_FLAG_REPEAT bit is set, then this call is
-P* a repetition
-P* int argc
-P* - Argument count
-P* char * const argv[]
-P* - Array of the actual arguments
-P*
-P* Returnvalue: int
-P* - 0 is always returned.
- *
-Z* Intention: Implement the "kbd" command.
-Z* The keyboard status is read. The result is printed on
-Z* the console and written into the "keybd" environment
-Z* variable.
- *
-D* Design: wd@denx.de
-C* Coding: wd@denx.de
-V* Verification: dzu@denx.de
- ***********************************************************************/
-int do_kbd (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
-{
- uchar kbd_data[KEYBD_DATALEN];
- char keybd_env[2 * KEYBD_DATALEN + 1];
- uchar val;
- int i;
-
-#if 0 /* Done in kbd_init */
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-
- /* Read keys */
- val = KEYBD_CMD_READ_KEYS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
-
- puts ("Keys:");
- for (i = 0; i < KEYBD_DATALEN; ++i) {
- sprintf (keybd_env + i + i, "%02X", kbd_data[i]);
- printf (" %02x", kbd_data[i]);
- }
- putc ('\n');
- setenv ("keybd", keybd_env);
- return 0;
-}
-
-U_BOOT_CMD(
- kbd, 1, 1, do_kbd,
- "read keyboard status",
- ""
-);
-
-/*----------------------------- Utilities -----------------------------*/
-
-#ifdef CONFIG_POST
-/*
- * Returns 1 if keys pressed to start the power-on long-running tests
- * Called from board_init_f().
- */
-int post_hotkeys_pressed(void)
-{
- uchar kbd_data[KEYBD_DATALEN];
- uchar val;
-
- /* Read keys */
- val = KEYBD_CMD_READ_KEYS;
- i2c_write (kbd_addr, 0, 0, &val, 1);
- i2c_read (kbd_addr, 0, 0, kbd_data, KEYBD_DATALEN);
-
- return (compare_magic(kbd_data, (uchar *)CONFIG_POST_KEY_MAGIC) == 0);
-}
-#endif
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