digsy MTC: Add 'mtc' command.

New command allows to:
     o check FW version
     o set LED status
     o set digital output status
     o get digital input status

Signed-off-by: Grzegorz Bernacki <gjb@semihalf.com>

board/digsy_mtc/Makefile

@@ -7,7 +7,7 @@ include $(TOPDIR)/config.mk
 
 LIB	= $(obj)lib$(BOARD).a
 
-COBJS	:= $(BOARD).o
+COBJS	:= $(BOARD).o cmd_mtc.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))

board/digsy_mtc/cmd_mtc.c

@@ -0,0 +1,350 @@
+/*
+ * (C) Copyright 2009
+ * Werner Pfister <Pfister_Werner@intercontrol.de>
+ *
+ * (C) Copyright 2009 Semihalf, Grzegorz Bernacki
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <command.h>
+#include <mpc5xxx.h>
+#include "spi.h"
+#include "cmd_mtc.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+static const char *led_names[] = {
+	"diag",
+	"can1",
+	"can2",
+	"can3",
+	"can4",
+	"usbpwr",
+	"usbbusy",
+	"user1",
+	"user2",
+	""
+};
+
+static void mtc_calculate_checksum(tx_msp_cmd *packet)
+{
+	int i;
+	uchar *buff;
+
+	buff = (uchar *) packet;
+
+	for (i = 0; i < 6; i++)
+		packet->cks += buff[i];
+}
+
+static int do_mtc_led(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err = 0;
+	int i;
+
+	if (argc < 2) {
+		cmd_usage(cmdtp);
+		return -1;
+	}
+
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_SET_LED;
+
+	pcmd.cmd_val0 = 0xff;
+	for (i = 0; strlen(led_names[i]) != 0; i++) {
+		if (strncmp(argv[1], led_names[i], strlen(led_names[i])) == 0) {
+			pcmd.cmd_val0 = i;
+			break;
+		}
+	}
+
+	if (pcmd.cmd_val0 == 0xff) {
+		printf("Usage:\n%s\n", cmdtp->help);
+		return -1;
+	}
+
+	if (argc >= 3) {
+		if (strncmp(argv[2], "red", 3) == 0)
+			pcmd.cmd_val1 = 1;
+		else if (strncmp(argv[2], "green", 5) == 0)
+			pcmd.cmd_val1 = 2;
+		else if (strncmp(argv[2], "orange", 6) == 0)
+			pcmd.cmd_val1 = 3;
+		else
+			pcmd.cmd_val1 = 0;
+	}
+
+	if (argc >= 4)
+		pcmd.cmd_val2 = simple_strtol(argv[3], NULL, 10);
+	else
+		pcmd.cmd_val2 = 0;
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+
+	return err;
+}
+
+static int do_mtc_key(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err = 0;
+
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_GET_VIM;
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+
+	if (!err) {
+		/* function returns '0' if key is pressed */
+		err = (prx.input & 0x80) ? 0 : 1;
+	}
+
+	return err;
+}
+
+static int do_mtc_digout(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err = 0;
+	uchar channel_mask = 0;
+
+	if (argc < 3) {
+		cmd_usage(cmdtp);
+		return -1;
+	}
+
+	if (strncmp(argv[1], "on", 2) == 0)
+		channel_mask |= 1;
+	if (strncmp(argv[2], "on", 2) == 0)
+		channel_mask |= 2;
+
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_GET_VIM;
+	pcmd.user_out = channel_mask;
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+
+	return err;
+}
+
+static int do_mtc_digin(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err = 0;
+	uchar channel_num = 0;
+
+	if (argc < 2) {
+		cmd_usage(cmdtp);
+		return -1;
+	}
+
+	channel_num = simple_strtol(argv[1], NULL, 10);
+	if ((channel_num != 1) && (channel_num != 2)) {
+		printf("mtc digin: invalid parameter - must be '1' or '2'\n");
+		return -1;
+	}
+
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_GET_VIM;
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+
+	if (!err) {
+		/* function returns '0' when digin is on */
+		err = (prx.input & channel_num) ? 0 : 1;
+	}
+
+	return err;
+}
+
+static int do_mtc_appreg(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err;
+	char buf[5];
+
+	/* read appreg */
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_WD_PARA;
+	pcmd.cmd_val0 = 5;	/* max. Count */
+	pcmd.cmd_val1 = 5;	/* max. Time */
+	pcmd.cmd_val2 = 0;	/* =0 means read appreg */
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+	if (!err) {
+		sprintf(buf, "%d", prx.ack2);
+		setenv("appreg", buf);
+	}
+
+	return err;
+}
+
+static int do_mtc_version(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	tx_msp_cmd pcmd;
+	rx_msp_cmd prx;
+	int err = 0;
+
+	memset(&pcmd, 0, sizeof(pcmd));
+	memset(&prx, 0, sizeof(prx));
+
+	pcmd.cmd = CMD_FW_VERSION;
+
+	mtc_calculate_checksum(&pcmd);
+	err = spi_xfer(NULL, MTC_TRANSFER_SIZE, &pcmd, &prx,
+		       SPI_XFER_BEGIN | SPI_XFER_END);
+
+	if (!err) {
+		printf("FW V%d.%d.%d / HW %d\n",
+		       prx.ack0, prx.ack1, prx.ack3, prx.ack2);
+	}
+
+	return err;
+}
+
+static int do_mtc_help(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]);
+
+cmd_tbl_t cmd_mtc_sub[] = {
+	U_BOOT_CMD_MKENT(led, 3, 1, do_mtc_led,
+	"set state of leds",
+	"[ledname] [state] [blink]\n"
+	" - lednames: diag can1 can2 can3 can4 usbpwr usbbusy user1 user2\n"
+	" - state: off red green orange\n"
+	" - blink: blink interval in 100ms steps (1 - 10; 0 = static)\n"),
+	U_BOOT_CMD_MKENT(key, 0, 1, do_mtc_key,
+	"returns state of user key\n", ""),
+	U_BOOT_CMD_MKENT(version, 0, 1, do_mtc_version,
+	"returns firmware version of supervisor uC\n", ""),
+	U_BOOT_CMD_MKENT(appreg, 0, 1, do_mtc_appreg,
+	"reads appreg value and stores in environment variable 'appreg'\n", ""),
+	U_BOOT_CMD_MKENT(digin, 1, 1, do_mtc_digin,
+	"returns state of digital input",
+	"<channel_num> - get state of digital input (1 or 2)\n"),
+	U_BOOT_CMD_MKENT(digout, 2, 1, do_mtc_digout,
+	"sets digital outputs",
+	"<on|off> <on|off>- set state of digital output 1 and 2\n"),
+	U_BOOT_CMD_MKENT(help, 4, 1, do_mtc_help, "get help",
+	"[command] - get help for command\n"),
+};
+
+static int do_mtc_help(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	extern int _do_help(cmd_tbl_t *cmd_start, int cmd_items,
+			    cmd_tbl_t *cmdtp, int flag,
+			    int argc, char *argv[]);
+#ifdef CONFIG_SYS_LONGHELP
+	puts("mtc ");
+#endif
+	return _do_help(&cmd_mtc_sub[0],
+			ARRAY_SIZE(cmd_mtc_sub), cmdtp, flag, argc, argv);
+}
+
+/* Relocate the command table function pointers when running in RAM */
+int mtc_cmd_init_r(void)
+{
+	cmd_tbl_t *cmdtp;
+
+	for (cmdtp = &cmd_mtc_sub[0]; cmdtp !=
+	     &cmd_mtc_sub[ARRAY_SIZE(cmd_mtc_sub)]; cmdtp++) {
+		ulong addr;
+
+		addr = (ulong)(cmdtp->cmd) + gd->reloc_off;
+		cmdtp->cmd =
+		    (int (*)(struct cmd_tbl_s *, int, int, char *[]))addr;
+
+		addr = (ulong)(cmdtp->name) + gd->reloc_off;
+		cmdtp->name = (char *)addr;
+
+		if (cmdtp->usage) {
+			addr = (ulong)(cmdtp->usage) + gd->reloc_off;
+			cmdtp->usage = (char *)addr;
+		}
+#ifdef CONFIG_SYS_LONGHELP
+		if (cmdtp->help) {
+			addr = (ulong)(cmdtp->help) + gd->reloc_off;
+			cmdtp->help = (char *)addr;
+		}
+#endif
+	}
+	return 0;
+}
+
+int cmd_mtc(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
+{
+	cmd_tbl_t *c;
+	int err = 0;
+
+	c = find_cmd_tbl(argv[1], &cmd_mtc_sub[0], ARRAY_SIZE(cmd_mtc_sub));
+	if (c) {
+		argc--;
+		argv++;
+		return c->cmd(c, flag, argc, argv);
+	} else {
+		/* Unrecognized command */
+		cmd_usage(cmdtp);
+		return 1;
+	}
+
+	return err;
+}
+
+U_BOOT_CMD(mtc, 5, 1, cmd_mtc,
+	   "mtc     - special commands for digsyMTC\n",
+	   "[subcommand] [args...]\n"
+	   "Subcommands list:\n"
+	   "led [ledname] [state] [blink] - set state of leds\n"
+	   "  [ledname]: diag can1 can2 can3 can4 usbpwr usbbusy user1 user2\n"
+	   "  [state]: off red green orange\n"
+	   "  [blink]: blink interval in 100ms steps (1 - 10; 0 = static)\n"
+	   "key - returns state of user key\n"
+	   "version - returns firmware version of supervisor uC\n"
+	   "appreg - reads appreg value and stores in environment variable"
+	   " 'appreg'\n"
+	   "digin [channel] - returns state of digital input (1 or 2)\n"
+	   "digout <on|off> <on|off> - sets state of two digital outputs\n"
+	   "help [subcommand] - get help for subcommand\n");
+

board/digsy_mtc/cmd_mtc.h

@@ -0,0 +1,60 @@
+/*
+ * (C) Copyright 2009
+ * Werner Pfister <Pfister_Werner@intercontrol.de>
+ *
+ * (C) Copyright 2009 Semihalf, Grzegorz Bernacki
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#ifndef CMD_MTC_H
+#define CMD_MTC_H
+
+#define	CMD_WD_PARA		0x02
+#define	CMD_FW_VERSION		0x10
+#define	CMD_GET_VIM		0x30
+#define	CMD_SET_LED		0x40
+
+typedef struct {
+	u8 cmd;
+	u8 sys_in;
+	u8 cmd_val0;
+	u8 cmd_val1;
+	u8 cmd_val2;
+	u8 user_out;
+	u8 cks;
+	u8 dummy1;
+	u8 dummy2;
+} tx_msp_cmd;
+
+typedef struct {
+	u8 input;
+	u8 state;
+	u8 ack2;
+	u8 ack3;
+	u8 ack0;
+	u8 ack1;
+	u8 ack;
+	u8 dummy;
+	u8 cks;
+} rx_msp_cmd;
+
+#define MTC_TRANSFER_SIZE (sizeof(tx_msp_cmd) * 8)
+
+#endif

board/digsy_mtc/digsy_mtc.c

@@ -240,6 +240,7 @@ void board_get_enetaddr (uchar * enet)
 
 int misc_init_r(void)
 {
+	extern int mtc_cmd_init_r (void);
 	uchar enetaddr[6];
 
 	if (!eth_getenv_enetaddr("ethaddr", enetaddr)) {
@@ -247,6 +248,7 @@ int misc_init_r(void)
 		eth_setenv_enetaddr("ethaddr", enetaddr);
 	}
 
+	mtc_cmd_init_r();
 	return 0;
 }