#define DISP_LINE_LEN 16
+/* implement possible board specific board init */
+void __def_i2c_init_board(void)
+{
+ return;
+}
+void i2c_init_board(void)
+ __attribute__((weak, alias("__def_i2c_init_board")));
+
/* TODO: Implement architecture-specific get/set functions */
unsigned int __def_i2c_get_bus_speed(void)
{
u_char *memaddr;
if (argc != 5)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* I2C chip address
devaddr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Length is the number of objects, not number of bytes.
return 0;
}
+static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
+{
+ u_char chip;
+ uint devaddr, alen, length;
+ u_char *memaddr;
+
+ if (argc != 5)
+ return cmd_usage(cmdtp);
+
+ /*
+ * memaddr is the address where to store things in memory
+ */
+ memaddr = (u_char *)simple_strtoul(argv[1], NULL, 16);
+
+ /*
+ * I2C chip address
+ */
+ chip = simple_strtoul(argv[2], NULL, 16);
+
+ /*
+ * I2C data address within the chip. This can be 1 or
+ * 2 bytes long. Some day it might be 3 bytes long :-).
+ */
+ devaddr = simple_strtoul(argv[3], NULL, 16);
+ alen = get_alen(argv[3]);
+ if (alen > 3)
+ return cmd_usage(cmdtp);
+
+ /*
+ * Length is the number of objects, not number of bytes.
+ */
+ length = simple_strtoul(argv[4], NULL, 16);
+
+ while (length-- > 0) {
+ if (i2c_write(chip, devaddr++, alen, memaddr++, 1) != 0) {
+ puts("Error writing to the chip.\n");
+ return 1;
+ }
+/*
+ * No write delay with FRAM devices.
+ */
+#if !defined(CONFIG_SYS_I2C_FRAM)
+ udelay(11000);
+#endif
+ }
+ return 0;
+}
+
/*
* Syntax:
* i2c md {i2c_chip} {addr}{.0, .1, .2} {len}
length = i2c_dp_last_length;
if (argc < 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
if ((flag & CMD_FLAG_REPEAT) == 0) {
/*
addr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* If another parameter, it is the length to display.
int count;
if ((argc < 4) || (argc > 5))
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Chip is always specified.
addr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Value to write is always specified.
ulong err;
if (argc < 4)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Chip is always specified.
addr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Count is always specified
ulong data;
int size = 1;
int nbytes;
- extern char console_buffer[];
if (argc != 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
#ifdef CONFIG_BOOT_RETRY_TIME
reset_cmd_timeout(); /* got a good command to get here */
addr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
}
/*
/*
* Syntax:
- * i2c probe {addr}{.0, .1, .2}
+ * i2c probe {addr}
+ *
+ * Returns zero (success) if one or more I2C devices was found
*/
static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
int j;
+ int addr = -1;
+ int found = 0;
#if defined(CONFIG_SYS_I2C_NOPROBES)
int k, skip;
uchar bus = GET_BUS_NUM;
#endif /* NOPROBES */
+ if (argc == 2)
+ addr = simple_strtol(argv[1], 0, 16);
+
puts ("Valid chip addresses:");
for (j = 0; j < 128; j++) {
+ if ((0 <= addr) && (j != addr))
+ continue;
+
#if defined(CONFIG_SYS_I2C_NOPROBES)
skip = 0;
for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) {
if (skip)
continue;
#endif
- if (i2c_probe(j) == 0)
+ if (i2c_probe(j) == 0) {
printf(" %02X", j);
+ found++;
+ }
}
putc ('\n');
putc ('\n');
#endif
- return 0;
+ return (0 == found);
}
/*
int delay;
if (argc < 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Chip is always specified.
addr = simple_strtoul(argv[2], NULL, 16);
alen = get_alen(argv[2]);
if (alen > 3)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Length is the number of objects, not number of bytes.
};
if (argc < 2)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/*
* Chip is always specified.
device = device->next;
}
} else {
- I2C_MUX_DEVICE *dev;
-
- dev = i2c_mux_ident_muxstring ((uchar *)argv[1]);
+ (void)i2c_mux_ident_muxstring ((uchar *)argv[1]);
ret = 0;
}
return ret;
U_BOOT_CMD_MKENT(nm, 2, 1, do_i2c_nm, "", ""),
U_BOOT_CMD_MKENT(probe, 0, 1, do_i2c_probe, "", ""),
U_BOOT_CMD_MKENT(read, 5, 1, do_i2c_read, "", ""),
+ U_BOOT_CMD_MKENT(write, 5, 0, do_i2c_write, "", ""),
U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""),
#if defined(CONFIG_CMD_SDRAM)
U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""),
U_BOOT_CMD_MKENT(speed, 1, 1, do_i2c_bus_speed, "", ""),
};
-#ifndef CONFIG_RELOC_FIXUP_WORKS
+#ifdef CONFIG_NEEDS_MANUAL_RELOC
void i2c_reloc(void) {
fixup_cmdtable(cmd_i2c_sub, ARRAY_SIZE(cmd_i2c_sub));
}
cmd_tbl_t *c;
if (argc < 2)
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
/* Strip off leading 'i2c' command argument */
argc--;
c = find_cmd_tbl(argv[0], &cmd_i2c_sub[0], ARRAY_SIZE(cmd_i2c_sub));
if (c)
- return c->cmd(cmdtp, flag, argc, argv);
+ return c->cmd(cmdtp, flag, argc, argv);
else
- return cmd_usage(cmdtp);
+ return CMD_RET_USAGE;
}
/***************************************************/
"i2c mm chip address[.0, .1, .2] - write to I2C device (auto-incrementing)\n"
"i2c mw chip address[.0, .1, .2] value [count] - write to I2C device (fill)\n"
"i2c nm chip address[.0, .1, .2] - write to I2C device (constant address)\n"
- "i2c probe - show devices on the I2C bus\n"
+ "i2c probe [address] - test for and show device(s) on the I2C bus\n"
"i2c read chip address[.0, .1, .2] length memaddress - read to memory \n"
+ "i2c write memaddress chip address[.0, .1, .2] length - write memory to i2c\n"
"i2c reset - re-init the I2C Controller\n"
#if defined(CONFIG_CMD_SDRAM)
"i2c sdram chip - print SDRAM configuration information\n"
return tmp;
}
-/* Analyses a Muxstring and sends immediately the
- Commands to the Muxes. Runs from Flash.
+/* Analyses a Muxstring and immediately sends the
+ commands to the muxes. Runs from flash.
*/
int i2c_mux_ident_muxstring_f (uchar *buf)
{
oldpos = pos;
}
+ i2c_init_board();
return 0;
}
mux = dev->mux;
while (mux != NULL) {
+ /* do deblocking on each level of mux, before mux config */
+ i2c_init_board();
if (i2c_write(mux->chip, 0, 0, &mux->channel, 1) != 0) {
printf ("Error setting Mux: chip:%x channel: \
%x\n", mux->chip, mux->channel);
}
mux = mux->next;
}
+ /* do deblocking on each level of mux and after mux config */
+ i2c_init_board();
return 0;
}
#endif /* CONFIG_I2C_MUX */
projects / karo-tx-uboot.git / blobdiff