[U-Boot] [PATCH] 1/12 Multiadapter/multibus I2C, common part 1
ksi at koi8.net
ksi at koi8.net
Thu Feb 12 23:12:03 CET 2009
Signed-off-by: Sergey Kubushyn <ksi at koi8.net>
---
diff -purN u-boot-i2c.orig/common/cmd_date.c u-boot-i2c/common/cmd_date.c
--- u-boot-i2c.orig/common/cmd_date.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/common/cmd_date.c 2009-02-12 10:46:00.000000000 -0800
@@ -46,8 +46,13 @@ int do_date (cmd_tbl_t *cmdtp, int flag,
int old_bus;
/* switch to correct I2C bus */
+#ifdef CONFIG_NEW_I2C
+ old_bus = i2c_get_bus_num();
+ i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
+#else
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_RTC_BUS_NUM);
+#endif
switch (argc) {
case 2: /* set date & time */
@@ -94,7 +99,11 @@ int do_date (cmd_tbl_t *cmdtp, int flag,
}
/* switch back to original I2C bus */
+#ifdef CONFIG_NEW_I2C
+ i2c_set_bus_num(old_bus);
+#else
I2C_SET_BUS(old_bus);
+#endif
return rcode;
}
diff -purN u-boot-i2c.orig/common/cmd_dtt.c u-boot-i2c/common/cmd_dtt.c
--- u-boot-i2c.orig/common/cmd_dtt.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/common/cmd_dtt.c 2009-02-12 10:46:00.000000000 -0800
@@ -35,8 +35,13 @@ int do_dtt (cmd_tbl_t * cmdtp, int flag,
int old_bus;
/* switch to correct I2C bus */
+#ifdef CONFIG_NEW_I2C
+ old_bus = i2c_get_bus_num();
+ i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
+#else
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
+#endif
/*
* Loop through sensors, read
@@ -46,7 +51,11 @@ int do_dtt (cmd_tbl_t * cmdtp, int flag,
printf ("DTT%d: %i C\n", i + 1, dtt_get_temp (sensors[i]));
/* switch back to original I2C bus */
+#ifdef CONFIG_NEW_I2C
+ i2c_set_bus_num(old_bus);
+#else
I2C_SET_BUS(old_bus);
+#endif
return 0;
} /* do_dtt() */
diff -purN u-boot-i2c.orig/common/cmd_i2c.c u-boot-i2c/common/cmd_i2c.c
--- u-boot-i2c.orig/common/cmd_i2c.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/common/cmd_i2c.c 2009-02-12 10:46:00.000000000 -0800
@@ -1,4 +1,9 @@
/*
+ * (C) Copyright 2009
+ * Sergey Kubushyn, himself, ksi at koi8.net
+ *
+ * Changes for unified multibus/multiadapter I2C support.
+ *
* (C) Copyright 2001
* Gerald Van Baren, Custom IDEAS, vanbaren at cideas.com.
*
@@ -106,7 +111,7 @@ static uint i2c_mm_last_alen;
* pairs. The following macros take care of this */
#if defined(CONFIG_SYS_I2C_NOPROBES)
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if CONFIG_SYS_NUM_I2C_BUSSES > 1
static struct
{
uchar bus;
@@ -122,19 +127,11 @@ static uchar i2c_no_probes[] = CONFIG_SY
#define COMPARE_BUS(b,i) ((b) == 0) /* Make compiler happy */
#define COMPARE_ADDR(a,i) (i2c_no_probes[(i)] == (a))
#define NO_PROBE_ADDR(i) i2c_no_probes[(i)]
-#endif /* CONFIG_MULTI_BUS */
+#endif /* CONFIG_SYS_NUM_I2C_BUSSES > 1 */
#define NUM_ELEMENTS_NOPROBE (sizeof(i2c_no_probes)/sizeof(i2c_no_probes[0]))
#endif
-#if defined(CONFIG_I2C_MUX)
-static I2C_MUX_DEVICE *i2c_mux_devices = NULL;
-static int i2c_mux_busid = CONFIG_SYS_MAX_I2C_BUS;
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#endif
-
static int
mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char *argv[]);
@@ -548,10 +545,10 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrfl
*/
int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
{
- int j;
+ int j;
#if defined(CONFIG_SYS_I2C_NOPROBES)
- int k, skip;
- uchar bus = GET_BUS_NUM;
+ int k, skip;
+ unsigned int bus = GET_BUS_NUM;
#endif /* NOPROBES */
puts ("Valid chip addresses:");
@@ -1189,59 +1186,79 @@ int do_sdram (cmd_tbl_t * cmdtp, int fla
#if defined(CONFIG_I2C_CMD_TREE)
int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
- i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+ i2c_init (ADAP(i2c_get_bus_num())->speed, ADAP(i2c_get_bus_num())->slaveaddr);
return 0;
}
-#if defined(CONFIG_I2C_MUX)
-int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
+int do_i2c_show_bus(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
- int ret=0;
+ int i;
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ int j;
+#endif
if (argc == 1) {
/* show all busses */
- I2C_MUX *mux;
- I2C_MUX_DEVICE *device = i2c_mux_devices;
-
- printf ("Busses reached over muxes:\n");
- while (device != NULL) {
- printf ("Bus ID: %x\n", device->busid);
- printf (" reached over Mux(es):\n");
- mux = device->mux;
- while (mux != NULL) {
- printf (" %s@%x ch: %x\n", mux->name, mux->chip, mux->channel);
- mux = mux->next;
+ for (i = 0; i < CONFIG_SYS_NUM_I2C_BUSSES; i++) {
+ printf("Bus %d:\t%s", i, ADAP(i)->name);
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
+ if (i2c_bus[i].next_hop[j].chip == 0) break;
+ printf("->%s at 0x%2x:%d",
+ i2c_bus[i].next_hop[j].mux.name,
+ i2c_bus[i].next_hop[j].chip,
+ i2c_bus[i].next_hop[j].channel);
}
- device = device->next;
+#endif
+ printf("\n");
}
- } else {
- I2C_MUX_DEVICE *dev;
- dev = i2c_mux_ident_muxstring ((uchar *)argv[1]);
- ret = 0;
+ } else {
+ /* show specific bus */
+ i = simple_strtoul(argv[1], NULL, 10);
+ if (i >= CONFIG_SYS_NUM_I2C_BUSSES) {
+ printf("Invalid bus %d\n", i);
+ return(-1);
+ }
+ printf("Bus %d:\t%s", i, ADAP(i)->name);
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
+ if (i2c_bus[i].next_hop[j].chip == 0) break;
+ printf("->%s at 0x%2x:%d",
+ i2c_bus[i].next_hop[j].mux.name,
+ i2c_bus[i].next_hop[j].chip,
+ i2c_bus[i].next_hop[j].channel);
+ }
+#endif
+ printf("\n");
}
- return ret;
+
+ return(0);
}
-#endif /* CONFIG_I2C_MUX */
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if CONFIG_SYS_NUM_I2C_BUSSES > 1
int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
- int bus_idx, ret=0;
+ int ret=0;
+ unsigned int bus_no;
if (argc == 1)
/* querying current setting */
printf("Current bus is %d\n", i2c_get_bus_num());
else {
- bus_idx = simple_strtoul(argv[1], NULL, 10);
- printf("Setting bus to %d\n", bus_idx);
- ret = i2c_set_bus_num(bus_idx);
+ bus_no = simple_strtoul(argv[1], NULL, 10);
+ if (bus_no >= CONFIG_SYS_NUM_I2C_BUSSES) {
+ printf("Invalid bus %d\n", bus_no);
+ return(-1);
+ }
+ printf("Setting bus to %d\n", bus_no);
+ ret = i2c_set_bus_num(bus_no);
if (ret)
printf("Failure changing bus number (%d)\n", ret);
}
return ret;
}
-#endif /* CONFIG_I2C_MULTI_BUS */
+#endif /* CONFIG_SYS_NUM_I2C_BUSSES > 1 */
int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
@@ -1262,16 +1279,16 @@ int do_i2c_bus_speed(cmd_tbl_t * cmdtp,
int do_i2c(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
{
-#if defined(CONFIG_I2C_MUX)
+#if CONFIG_SYS_NUM_I2C_BUSSES > 1
if (!strncmp(argv[1], "bu", 2))
- return do_i2c_add_bus(cmdtp, flag, --argc, ++argv);
-#endif /* CONFIG_I2C_MUX */
+ return do_i2c_show_bus(cmdtp, flag, --argc, ++argv);
+#endif /* CONFIG_SYS_NUM_I2C_BUSSES > 1 */
if (!strncmp(argv[1], "sp", 2))
return do_i2c_bus_speed(cmdtp, flag, --argc, ++argv);
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if CONFIG_SYS_NUM_I2C_BUSSES > 1
if (!strncmp(argv[1], "de", 2))
return do_i2c_bus_num(cmdtp, flag, --argc, ++argv);
-#endif /* CONFIG_I2C_MULTI_BUS */
+#endif /* CONFIG_SYS_NUM_I2C_BUSSES > 1 */
if (!strncmp(argv[1], "md", 2))
return do_i2c_md(cmdtp, flag, --argc, ++argv);
if (!strncmp(argv[1], "mm", 2))
@@ -1304,13 +1321,11 @@ int do_i2c(cmd_tbl_t * cmdtp, int flag,
U_BOOT_CMD(
i2c, 6, 1, do_i2c,
"I2C sub-system",
-#if defined(CONFIG_I2C_MUX)
- "bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes.\n"
-#endif /* CONFIG_I2C_MUX */
- "speed [speed] - show or set I2C bus speed\n"
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if CONFIG_SYS_NUM_I2C_BUSSES > 1
+ "bus [bus_no] - show I2C bus info.\n"
"i2c dev [dev] - show or set current I2C bus\n"
-#endif /* CONFIG_I2C_MULTI_BUS */
+#endif /* CONFIG_SYS_NUM_I2C_BUSSES > 1 */
+ "i2c speed [speed] - show or set I2C bus speed\n"
"i2c md chip address[.0, .1, .2] [# of objects] - read from I2C device\n"
"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"
@@ -1323,7 +1338,7 @@ U_BOOT_CMD(
"i2c sdram chip - print SDRAM configuration information\n"
#endif
);
-#endif /* CONFIG_I2C_CMD_TREE */
+#else /* CONFIG_I2C_CMD_TREE */
U_BOOT_CMD(
imd, 4, 1, do_i2c_md, \
"i2c memory display", \
@@ -1378,221 +1393,4 @@ U_BOOT_CMD(
" (valid chip values 50..57)\n"
);
#endif
-
-#if defined(CONFIG_I2C_MUX)
-
-int i2c_mux_add_device(I2C_MUX_DEVICE *dev)
-{
- I2C_MUX_DEVICE *devtmp = i2c_mux_devices;
-
- if (i2c_mux_devices == NULL) {
- i2c_mux_devices = dev;
- return 0;
- }
- while (devtmp->next != NULL)
- devtmp = devtmp->next;
-
- devtmp->next = dev;
- return 0;
-}
-
-I2C_MUX_DEVICE *i2c_mux_search_device(int id)
-{
- I2C_MUX_DEVICE *device = i2c_mux_devices;
-
- while (device != NULL) {
- if (device->busid == id)
- return device;
- device = device->next;
- }
- return NULL;
-}
-
-/* searches in the buf from *pos the next ':'.
- * returns:
- * 0 if found (with *pos = where)
- * < 0 if an error occured
- * > 0 if the end of buf is reached
- */
-static int i2c_mux_search_next (int *pos, uchar *buf, int len)
-{
- while ((buf[*pos] != ':') && (*pos < len)) {
- *pos += 1;
- }
- if (*pos >= len)
- return 1;
- if (buf[*pos] != ':')
- return -1;
- return 0;
-}
-
-static int i2c_mux_get_busid (void)
-{
- int tmp = i2c_mux_busid;
-
- i2c_mux_busid ++;
- return tmp;
-}
-
-/* Analyses a Muxstring and sends immediately the
- Commands to the Muxes. Runs from Flash.
- */
-int i2c_mux_ident_muxstring_f (uchar *buf)
-{
- int pos = 0;
- int oldpos;
- int ret = 0;
- int len = strlen((char *)buf);
- int chip;
- uchar channel;
- int was = 0;
-
- while (ret == 0) {
- oldpos = pos;
- /* search name */
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret != 0)
- printf ("ERROR\n");
- /* search address */
- pos ++;
- oldpos = pos;
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret != 0)
- printf ("ERROR\n");
- buf[pos] = 0;
- chip = simple_strtoul((char *)&buf[oldpos], NULL, 16);
- buf[pos] = ':';
- /* search channel */
- pos ++;
- oldpos = pos;
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret < 0)
- printf ("ERROR\n");
- was = 0;
- if (buf[pos] != 0) {
- buf[pos] = 0;
- was = 1;
- }
- channel = simple_strtoul((char *)&buf[oldpos], NULL, 16);
- if (was)
- buf[pos] = ':';
- if (i2c_write(chip, 0, 0, &channel, 1) != 0) {
- printf ("Error setting Mux: chip:%x channel: \
- %x\n", chip, channel);
- return -1;
- }
- pos ++;
- oldpos = pos;
-
- }
-
- return 0;
-}
-
-/* Analyses a Muxstring and if this String is correct
- * adds a new I2C Bus.
- */
-I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf)
-{
- I2C_MUX_DEVICE *device;
- I2C_MUX *mux;
- int pos = 0;
- int oldpos;
- int ret = 0;
- int len = strlen((char *)buf);
- int was = 0;
-
- device = (I2C_MUX_DEVICE *)malloc (sizeof(I2C_MUX_DEVICE));
- device->mux = NULL;
- device->busid = i2c_mux_get_busid ();
- device->next = NULL;
- while (ret == 0) {
- mux = (I2C_MUX *)malloc (sizeof(I2C_MUX));
- mux->next = NULL;
- /* search name of mux */
- oldpos = pos;
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret != 0)
- printf ("%s no name.\n", __FUNCTION__);
- mux->name = (char *)malloc (pos - oldpos + 1);
- memcpy (mux->name, &buf[oldpos], pos - oldpos);
- mux->name[pos - oldpos] = 0;
- /* search address */
- pos ++;
- oldpos = pos;
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret != 0)
- printf ("%s no mux address.\n", __FUNCTION__);
- buf[pos] = 0;
- mux->chip = simple_strtoul((char *)&buf[oldpos], NULL, 16);
- buf[pos] = ':';
- /* search channel */
- pos ++;
- oldpos = pos;
- ret = i2c_mux_search_next(&pos, buf, len);
- if (ret < 0)
- printf ("%s no mux channel.\n", __FUNCTION__);
- was = 0;
- if (buf[pos] != 0) {
- buf[pos] = 0;
- was = 1;
- }
- mux->channel = simple_strtoul((char *)&buf[oldpos], NULL, 16);
- if (was)
- buf[pos] = ':';
- if (device->mux == NULL)
- device->mux = mux;
- else {
- I2C_MUX *muxtmp = device->mux;
- while (muxtmp->next != NULL) {
- muxtmp = muxtmp->next;
- }
- muxtmp->next = mux;
- }
- pos ++;
- oldpos = pos;
- }
- if (ret > 0) {
- /* Add Device */
- i2c_mux_add_device (device);
- return device;
- }
-
- return NULL;
-}
-
-int i2x_mux_select_mux(int bus)
-{
- I2C_MUX_DEVICE *dev;
- I2C_MUX *mux;
-
- if ((gd->flags & GD_FLG_RELOC) != GD_FLG_RELOC) {
- /* select Default Mux Bus */
-#if defined(CONFIG_SYS_I2C_IVM_BUS)
- i2c_mux_ident_muxstring_f ((uchar *)CONFIG_SYS_I2C_IVM_BUS);
-#else
- {
- unsigned char *buf;
- buf = (unsigned char *) getenv("EEprom_ivm");
- if (buf != NULL)
- i2c_mux_ident_muxstring_f (buf);
- }
-#endif
- return 0;
- }
- dev = i2c_mux_search_device(bus);
- if (dev == NULL)
- return -1;
-
- mux = dev->mux;
- while (mux != NULL) {
- if (i2c_write(mux->chip, 0, 0, &mux->channel, 1) != 0) {
- printf ("Error setting Mux: chip:%x channel: \
- %x\n", mux->chip, mux->channel);
- return -1;
- }
- mux = mux->next;
- }
- return 0;
-}
-#endif /* CONFIG_I2C_MUX */
+#endif /* CONFIG_I2C_CMD_TREE */
diff -purN u-boot-i2c.orig/common/devices.c u-boot-i2c/common/devices.c
--- u-boot-i2c.orig/common/devices.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/common/devices.c 2009-02-12 10:46:00.000000000 -0800
@@ -1,4 +1,8 @@
/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi at koi8.net>
+ *
+ * Changes for multibus/multiadapter I2C support.
+ *
* (C) Copyright 2000
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio at tin.it
*
@@ -30,7 +34,7 @@
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
-#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
+#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C) || defined(CONFIG_SYS_I2C_ADAPTERS)
#include <i2c.h>
#endif
@@ -215,9 +219,15 @@ int devices_init (void)
/* Initialize the list */
INIT_LIST_HEAD(&(devs.list));
+#ifdef CONFIG_NEW_I2C
+#ifdef CONFIG_SYS_I2C_ADAPTERS
+ i2c_init_all();
+#endif
+#else
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
+#endif
#ifdef CONFIG_LCD
drv_lcd_init ();
#endif
diff -purN u-boot-i2c.orig/drivers/hwmon/adm1021.c u-boot-i2c/drivers/hwmon/adm1021.c
--- u-boot-i2c.orig/drivers/hwmon/adm1021.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/drivers/hwmon/adm1021.c 2009-02-12 10:46:00.000000000 -0800
@@ -174,7 +174,11 @@ dtt_init (void)
const char *const header = "DTT: ";
/* switch to correct I2C bus */
+#ifdef CONFIG_NEW_I2C
+ i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
+#else
I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
+#endif
for (i = 0; i < sizeof(sensors); i++) {
if (_dtt_init(sensors[i]) != 0)
diff -purN u-boot-i2c.orig/drivers/hwmon/lm75.c u-boot-i2c/drivers/hwmon/lm75.c
--- u-boot-i2c.orig/drivers/hwmon/lm75.c 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/drivers/hwmon/lm75.c 2009-02-12 10:46:00.000000000 -0800
@@ -156,8 +156,13 @@ int dtt_init (void)
int old_bus;
/* switch to correct I2C bus */
+#ifdef CONFIG_NEW_I2C
+ old_bus = i2c_get_bus_num();
+ i2c_set_bus_num(CONFIG_SYS_DTT_BUS_NUM);
+#else
old_bus = I2C_GET_BUS();
I2C_SET_BUS(CONFIG_SYS_DTT_BUS_NUM);
+#endif
for (i = 0; i < sizeof(sensors); i++) {
if (_dtt_init(sensors[i]) != 0)
@@ -167,7 +172,11 @@ int dtt_init (void)
dtt_get_temp(sensors[i]));
}
/* switch back to original I2C bus */
+#ifdef CONFIG_NEW_I2C
+ i2c_set_bus_num(old_bus);
+#else
I2C_SET_BUS(old_bus);
+#endif
return (0);
} /* dtt_init() */
diff -purN u-boot-i2c.orig/drivers/i2c/i2c_core.c u-boot-i2c/drivers/i2c/i2c_core.c
--- u-boot-i2c.orig/drivers/i2c/i2c_core.c 1969-12-31 16:00:00.000000000 -0800
+++ u-boot-i2c/drivers/i2c/i2c_core.c 2009-02-12 11:06:54.000000000 -0800
@@ -0,0 +1,337 @@
+/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi at koi8.net>
+ *
+ * Multibus/multiadapter I2C core functions (wrappers)
+ */
+#include <common.h>
+#include <i2c.h>
+
+#ifdef CONFIG_BFIN_TWI_I2C
+extern i2c_adap_t bfin_twi_i2c_adap;
+#endif
+
+#ifdef CONFIG_FSL_I2C
+extern i2c_adap_t fsl_i2c_adap[];
+#endif
+
+#ifdef CONFIG_MXC_I2C
+extern i2c_adap_t mxc_i2c_adap[];
+#endif
+
+#ifdef CONFIG_OMAP1510_I2C
+extern i2c_adap_t omap1510_i2c_adap;
+#endif
+
+#ifdef CONFIG_OMAP24XX_I2C
+extern i2c_adap_t omap24xx_i2c_adap[];
+#endif
+
+#ifdef CONFIG_SM502_I2C
+extern i2c_adap_t sm501_i2c_adap;
+#endif
+
+#ifdef CONFIG_SOFT_I2C
+extern i2c_adap_t soft_i2c_adap[];
+#endif
+
+#ifdef CONFIG_TSI108_I2C
+extern i2c_adap_t tsi108_i2c_adap;
+#endif
+
+i2c_adap_t *i2c_adap[CONFIG_SYS_NUM_I2C_ADAPTERS] = CONFIG_SYS_I2C_ADAPTERS;
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+i2c_bus_t i2c_bus[CONFIG_SYS_NUM_I2C_BUSSES] = CONFIG_SYS_I2C_BUSSES;
+#endif
+
+static unsigned int i2c_cur_bus __attribute__ ((section (".data"))) = CONFIG_SYS_SPD_BUS_NUM;
+
+DECLARE_GLOBAL_DATA_PTR;
+
+void i2c_reloc_fixup(void)
+{
+ int i;
+ unsigned long addr;
+
+ for (i = 0; i < CONFIG_SYS_NUM_I2C_ADAPTERS; i++) {
+ /* Adapter itself */
+ addr = (unsigned long)i2c_adap[i];
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i] = (i2c_adap_t *)addr;
+ /* i2c_init() */
+ addr = (unsigned long)i2c_adap[i]->init;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->init = (void (*)(int, int))addr;
+ /* i2c_probe() */
+ addr = (unsigned long)i2c_adap[i]->probe;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->probe = (int (*)(u_int8_t))addr;
+ /* i2c_read() */
+ addr = (unsigned long)i2c_adap[i]->read;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->read = (int (*)(u_int8_t, uint, int, u_int8_t *, int))addr;
+ /* i2c_write() */
+ addr = (unsigned long)i2c_adap[i]->write;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->write = (int (*)(u_int8_t, uint, int, u_int8_t *, int))addr;
+ /* i2c_set_bus_speed() */
+ addr = (unsigned long)i2c_adap[i]->set_bus_speed;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->set_bus_speed = (uint (*)(uint))addr;
+ /* i2c_get_bus_speed() */
+ addr = (unsigned long)i2c_adap[i]->get_bus_speed;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->get_bus_speed = (uint (*)(void))addr;
+ /* name */
+ addr = (unsigned long)i2c_adap[i]->name;
+ if (addr != 0) addr += gd->reloc_off;
+ i2c_adap[i]->name = (char *)addr;
+ }
+}
+
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+/*
+ * i2c_mux_set()
+ * -------------
+ *
+ * This turns on the given channel on I2C multiplexer chip connected to
+ * a given I2C adapter directly or via other multiplexers. In the latter
+ * case the entire multiplexer chain must be initialized first starting
+ * with the one connected directly to the adapter. When disabling a chain
+ * muxes must be programmed in reverse order, starting with the one
+ * farthest from the adapter.
+ *
+ * mux_id is the multiplexer chip type from defined in i2c.h. So far only
+ * NXP (Philips) PCA954x multiplexers are supported. Switches are NOT
+ * supported (anybody uses them?)
+ */
+
+static int i2c_mux_set(int adapter, int mux_id, int chip, int channel)
+{
+ u_int8_t buf;
+
+ /* channel < 0 - turn off the mux */
+ if (channel < 0) {
+ buf = 0;
+ return(i2c_adap[adapter]->write(chip, 0, 0, &buf, 1));
+ }
+
+ switch (mux_id) {
+ case I2C_MUX_PCA9540_ID:
+ case I2C_MUX_PCA9542_ID:
+ if (channel > 1) return(-1);
+ buf = (u_int8_t)((channel & 0x01) | (1 << 2));
+ break;
+ case I2C_MUX_PCA9544_ID:
+ if (channel > 3) return(-1);
+ buf = (u_int8_t)((channel & 0x03) | (1 << 2));
+ break;
+ case I2C_MUX_PCA9547_ID:
+ if (channel > 7) return(-1);
+ buf = (u_int8_t)((channel & 0x07) | (1 << 3));
+ break;
+ default:
+ return(-1);
+ }
+
+ return(i2c_adap[adapter]->write(chip, 0, 0, &buf, 1));
+}
+#endif
+
+/*
+ * i2c_get_bus_num():
+ * ------------------
+ *
+ * Returns index of currently active I2C bus. Zero-based.
+ */
+unsigned int i2c_get_bus_num(void)
+{
+ return(i2c_cur_bus);
+}
+
+/*
+ * i2c_set_bus_num():
+ * ------------------
+ *
+ * Change the active I2C bus. Subsequent read/write calls will
+ * go to this one. Sets all of the muxes in a proper condition
+ * if that bus is behind muxes. Fails if called before relocation.
+ * If previously selected bus is behind the muxes turns off all the
+ * muxes along the path to that bus.
+ *
+ * bus - bus index, zero based
+ *
+ * Returns: 0 on success, not 0 on failure
+ */
+int i2c_set_bus_num(unsigned int bus)
+{
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ int i;
+ u_int8_t buf;
+#endif
+
+ if ((bus >= CONFIG_SYS_NUM_I2C_BUSSES) || !(gd->flags & GD_FLG_RELOC))
+ return(-1);
+
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ /* Disconnect current bus (turn off muxes if any) */
+ if ((i2c_bus[i2c_cur_bus].next_hop[0].chip != 0) &&
+ (ADAP(i2c_cur_bus)->init_done != 0)) {
+
+ i = CONFIG_SYS_I2C_MAX_HOPS;
+
+ do {
+ u_int8_t chip;
+
+ if ((chip = i2c_bus[i2c_cur_bus].next_hop[--i].chip) == 0)
+ continue;
+
+ ADAP(i2c_cur_bus)->write(chip, 0, 0, &buf, 1);
+
+ } while (i > 0);
+ }
+
+ /* Connect requested bus if behind muxes */
+ if ((i2c_bus[bus].next_hop[0].chip != 0) &&
+ (ADAP(bus)->init_done != 0)) {
+
+ /* Set all muxes along the path to that bus */
+ for (i = 0; i < CONFIG_SYS_I2C_MAX_HOPS; i++) {
+
+ if (i2c_bus[bus].next_hop[i].chip == 0) break;
+
+ i2c_mux_set(i2c_bus[bus].adapter,
+ i2c_bus[bus].next_hop[i].mux.id,
+ i2c_bus[bus].next_hop[i].chip,
+ i2c_bus[bus].next_hop[i].channel);
+ }
+ }
+#endif
+
+ i2c_cur_bus = bus;
+ return(0);
+}
+
+/*
+ * i2c_init_bus():
+ * ---------------
+ *
+ * Initializes one bus. Will initialize the parent adapter. No current bus
+ * changes, no mux (if any) setup.
+ */
+static void i2c_init_bus(unsigned int bus_no, int speed, int slaveaddr)
+{
+ if (bus_no >= CONFIG_SYS_NUM_I2C_BUSSES)
+ return;
+
+ ADAP(bus_no)->init(speed, slaveaddr);
+
+ if (gd->flags & GD_FLG_RELOC) {
+ ADAP(bus_no)->init_done = 1;
+ ADAP(bus_no)->speed = speed;
+ ADAP(bus_no)->slaveaddr = slaveaddr;
+ }
+}
+
+/*
+ * i2c_init_all():
+ *
+ * Initializes all I2C adapters in the system. All i2c_adap_t structures in
+ * i2c_adap[] must be initialized beforehead with function pointers and
+ * data, including speed and slaveaddr.
+ */
+void i2c_init_all(void)
+{
+ int i;
+
+ for (i = 0; i < CONFIG_SYS_NUM_I2C_ADAPTERS; i++) {
+ if ((i2c_adap[i]->speed != 0) && (i2c_adap[i]->init != NULL)) {
+ i2c_adap[i]->init(i2c_adap[i]->speed, i2c_adap[i]->slaveaddr);
+ if (gd->flags & GD_FLG_RELOC)
+ i2c_adap[i]->init_done = 1;
+ }
+ }
+}
+
+/*
+ * Probe the given I2C chip address. Returns 0 if a chip responded,
+ * not 0 on failure.
+ */
+int i2c_probe(u_int8_t chip)
+{
+ return(ADAP(i2c_cur_bus)->probe(chip));
+}
+
+/*
+ * Read/Write interface:
+ * chip: I2C chip address, range 0..127
+ * addr: Memory (register) address within the chip
+ * alen: Number of bytes to use for addr (typically 1, 2 for larger
+ * memories, 0 for register type devices with only one
+ * register)
+ * buffer: Where to read/write the data
+ * len: How many bytes to read/write
+ *
+ * Returns: 0 on success, not 0 on failure
+ */
+int i2c_read(u_int8_t chip, unsigned int addr, int alen,
+ u_int8_t *buffer, int len)
+{
+ return(ADAP(i2c_cur_bus)->read(chip, addr, alen, buffer, len));
+}
+
+int i2c_write(u_int8_t chip, unsigned int addr, int alen,
+ u_int8_t *buffer, int len)
+{
+ return(ADAP(i2c_cur_bus)->write(chip, addr, alen, buffer, len));
+}
+
+unsigned int i2c_set_bus_speed(unsigned int speed)
+{
+ return(ADAP(i2c_cur_bus)->set_bus_speed(speed));
+}
+
+unsigned int i2c_get_bus_speed(void)
+{
+ return(ADAP(i2c_cur_bus)->get_bus_speed());
+}
+
+u_int8_t i2c_reg_read(u_int8_t addr, u_int8_t reg)
+{
+ u_int8_t buf;
+
+#ifdef CONFIG_8xx
+ /* MPC8xx needs this. Maybe one day we can get rid of it. */
+ i2c_init_bus(i2c_cur_bus, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+ i2c_read(addr, reg, 1, &buf, 1);
+
+#ifdef DEBUG
+ printf("%s: bus=%d addr=0x%02x, reg=0x%02x, val=0x%02x\n",
+ __func__, i2c_cur_bus, addr, reg, buf);
+#endif
+
+ return buf;
+}
+
+void i2c_reg_write(u_int8_t addr, u_int8_t reg, u_int8_t val)
+{
+#ifdef CONFIG_8xx
+ /* MPC8xx needs this. Maybe one day we can get rid of it. */
+ i2c_init_bus(i2c_cur_bus, CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
+
+#ifdef DEBUG
+ printf("%s: bus=%d addr=0x%02x, reg=0x%02x, val=0x%02x\n",
+ __func__, i2c_cur_bus, addr, reg, val);
+#endif
+
+ i2c_write(addr, reg, 1, &val, 1);
+}
+
+void inline __i2c_init(unsigned int speed, int slaveaddr)
+{
+ i2c_init_bus(i2c_cur_bus, speed, slaveaddr);
+}
+
+void inline i2c_init(unsigned int speed, int slaveaddr)
+ __attribute__((weak, alias("__i2c_init")));
diff -purN u-boot-i2c.orig/drivers/i2c/Makefile u-boot-i2c/drivers/i2c/Makefile
--- u-boot-i2c.orig/drivers/i2c/Makefile 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/drivers/i2c/Makefile 2009-02-12 10:46:00.000000000 -0800
@@ -27,12 +27,13 @@ LIB := $(obj)libi2c.a
COBJS-$(CONFIG_BFIN_TWI_I2C) += bfin-twi_i2c.o
COBJS-$(CONFIG_FSL_I2C) += fsl_i2c.o
-COBJS-$(CONFIG_I2C_MXC) += mxc_i2c.o
-COBJS-$(CONFIG_DRIVER_OMAP1510_I2C) += omap1510_i2c.o
-COBJS-$(CONFIG_DRIVER_OMAP24XX_I2C) += omap24xx_i2c.o
-COBJS-$(CONFIG_DRIVER_OMAP34XX_I2C) += omap24xx_i2c.o
+COBJS-$(CONFIG_MXC_I2C) += mxc_i2c.o
+COBJS-$(CONFIG_OMAP1510_I2C) += omap1510_i2c.o
+COBJS-$(CONFIG_OMAP24XX_I2C) += omap24xx_i2c.o
COBJS-$(CONFIG_SOFT_I2C) += soft_i2c.o
COBJS-$(CONFIG_TSI108_I2C) += tsi108_i2c.o
+COBJS-$(CONFIG_SM502_I2C) += sm502_i2c.o
+COBJS-$(CONFIG_NEW_I2C) += i2c_core.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
diff -purN u-boot-i2c.orig/include/i2c.h u-boot-i2c/include/i2c.h
--- u-boot-i2c.orig/include/i2c.h 2009-02-12 10:43:41.000000000 -0800
+++ u-boot-i2c/include/i2c.h 2009-02-12 11:00:50.000000000 -0800
@@ -1,4 +1,7 @@
/*
+ * Copyright (C) 2009 Sergey Kubushyn <ksi at koi8.net>
+ * Changes for multibus/multiadapter I2C support.
+ *
* (C) Copyright 2001
* Gerald Van Baren, Custom IDEAS, vanbaren at cideas.com.
*
@@ -46,14 +49,20 @@
*/
#define I2C_RXTX_LEN 128 /* maximum tx/rx buffer length */
-#if defined(CONFIG_I2C_MULTI_BUS)
-#define CONFIG_SYS_MAX_I2C_BUS 2
-#define I2C_GET_BUS() i2c_get_bus_num()
-#define I2C_SET_BUS(a) i2c_set_bus_num(a)
+#ifndef CONFIG_SYS_NUM_I2C_ADAPTERS
+#define CONFIG_SYS_NUM_I2C_ADAPTERS 1
+#endif
+
+#if !defined(CONFIG_SYS_I2C_MAX_HOPS) || (CONFIG_SYS_I2C_MAX_HOPS == 0)
+#define CONFIG_SYS_I2C_DIRECT_BUS 1
+#if !defined(CONFIG_SYS_NUM_I2C_BUSSES) || (CONFIG_SYS_NUM_I2C_BUSSES != CONFIG_SYS_NUM_I2C_ADAPTERS)
+#define CONFIG_SYS_NUM_I2C_BUSSES CONFIG_SYS_NUM_I2C_ADAPTERS
+#endif
#else
-#define CONFIG_SYS_MAX_I2C_BUS 1
-#define I2C_GET_BUS() 0
-#define I2C_SET_BUS(a)
+#undef CONFIG_SYS_I2C_DIRECT_BUS
+#ifndef CONFIG_SYS_NUM_I2C_BUSSES
+#define CONFIG_SYS_NUM_I2C_BUSSES 1
+#endif
#endif
/* define the I2C bus number for RTC and DTT if not already done */
@@ -67,66 +76,95 @@
#define CONFIG_SYS_SPD_BUS_NUM 0
#endif
-#ifndef I2C_SOFT_DECLARATIONS
-# if defined(CONFIG_MPC8260)
-# define I2C_SOFT_DECLARATIONS volatile ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, I2C_PORT);
-# elif defined(CONFIG_8xx)
-# define I2C_SOFT_DECLARATIONS volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
-# else
-# define I2C_SOFT_DECLARATIONS
-# endif
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+#define ADAP(bus) i2c_adap[i2c_bus[(bus)].adapter]
+#else
+#define ADAP(bus) i2c_adap[(bus)]
#endif
-#ifdef CONFIG_8xx
-/* Set default values for the I2C bus speed and slave address on 8xx. In the
- * future, we'll define these in all 8xx board config files.
- */
-#ifndef CONFIG_SYS_I2C_SPEED
-#define CONFIG_SYS_I2C_SPEED 50000
-#endif
+typedef struct i2c_adapter {
+ void (*init)(int speed, int slaveaddr);
+ int (*probe)(u_int8_t chip);
+ int (*read)(u_int8_t chip, uint addr, int alen,
+ u_int8_t *buffer, int len);
+ int (*write)(u_int8_t chip, uint addr, int alen,
+ u_int8_t *buffer, int len);
+ uint (*set_bus_speed)(uint speed);
+ uint (*get_bus_speed)(void);
+
+ int speed;
+ int slaveaddr;
+ int init_done;
+ char *name;
+} i2c_adap_t;
+
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+#define I2C_MUX_PCA9540_ID 1
+#define I2C_MUX_PCA9540 {I2C_MUX_PCA9540_ID, "PCA9540B"}
+#define I2C_MUX_PCA9542_ID 2
+#define I2C_MUX_PCA9542 {I2C_MUX_PCA9542_ID, "PCA9542A"}
+#define I2C_MUX_PCA9544_ID 3
+#define I2C_MUX_PCA9544 {I2C_MUX_PCA9544_ID, "PCA9544A"}
+#define I2C_MUX_PCA9547_ID 4
+#define I2C_MUX_PCA9547 {I2C_MUX_PCA9547_ID, "PCA9547A"}
+
+typedef struct i2c_mux {
+ int id;
+ char name[16];
+} i2c_mux_t;
+
+typedef struct i2c_next_hop {
+ i2c_mux_t mux;
+ u_int8_t chip;
+ u_int8_t channel;
+} i2c_next_hop_t;
+
+typedef struct i2c_bus_hose {
+ int adapter;
+ i2c_next_hop_t next_hop[CONFIG_SYS_I2C_MAX_HOPS];
+} i2c_bus_t;
-#ifndef CONFIG_SYS_I2C_SLAVE
-#define CONFIG_SYS_I2C_SLAVE 0xFE
-#endif
+#define I2C_NULL_HOP {{-1, ""}, 0, 0}
+
+extern i2c_bus_t i2c_bus[];
#endif
+extern i2c_adap_t *i2c_adap[];
+
/*
- * Initialization, must be called once on start up, may be called
- * repeatedly to change the speed and slave addresses.
+ * i2c_get_bus_num:
+ *
+ * Returns index of currently active I2C bus. Zero-based.
*/
-void i2c_init(int speed, int slaveaddr);
-#ifdef CONFIG_SYS_I2C_INIT_BOARD
-void i2c_init_board(void);
-#endif
+unsigned int i2c_get_bus_num(void);
-#if defined(CONFIG_I2C_MUX)
+/*
+ * i2c_set_bus_num:
+ *
+ * Change the active I2C bus. Subsequent read/write calls will
+ * go to this one.
+ *
+ * bus - bus index, zero based
+ *
+ * Returns: 0 on success, not 0 on failure
+ *
+ */
+int i2c_set_bus_num(unsigned int bus);
-typedef struct _mux {
- uchar chip;
- uchar channel;
- char *name;
- struct _mux *next;
-} I2C_MUX;
-
-typedef struct _mux_device {
- int busid;
- I2C_MUX *mux; /* List of muxes, to reach the device */
- struct _mux_device *next;
-} I2C_MUX_DEVICE;
-
-int i2c_mux_add_device(I2C_MUX_DEVICE *dev);
-
-I2C_MUX_DEVICE *i2c_mux_search_device(int id);
-I2C_MUX_DEVICE *i2c_mux_ident_muxstring (uchar *buf);
-int i2x_mux_select_mux(int bus);
-int i2c_mux_ident_muxstring_f (uchar *buf);
-#endif
+/*
+ * i2c_init_all():
+ *
+ * Initializes all I2C adapters in the system. All i2c_adap structures must
+ * be initialized beforehead with function pointers and data, including
+ * speed and slaveaddr. Returns 0 on success, non-0 on failure.
+ */
+void i2c_init_all(void);
/*
* Probe the given I2C chip address. Returns 0 if a chip responded,
* not 0 on failure.
*/
-int i2c_probe(uchar chip);
+int i2c_probe(u_int8_t chip);
/*
* Read/Write interface:
@@ -140,88 +178,62 @@ int i2c_probe(uchar chip);
*
* Returns: 0 on success, not 0 on failure
*/
-int i2c_read(uchar chip, uint addr, int alen, uchar *buffer, int len);
-int i2c_write(uchar chip, uint addr, int alen, uchar *buffer, int len);
+int i2c_read(u_int8_t chip, unsigned int addr, int alen,
+ u_int8_t *buffer, int len);
+
+int i2c_write(u_int8_t chip, unsigned int addr, int alen,
+ u_int8_t *buffer, int len);
/*
* Utility routines to read/write registers.
*/
-static inline u8 i2c_reg_read(u8 addr, u8 reg)
-{
- u8 buf;
-
-#ifdef CONFIG_8xx
- /* MPC8xx needs this. Maybe one day we can get rid of it. */
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-
-#ifdef DEBUG
- printf("%s: addr=0x%02x, reg=0x%02x\n", __func__, addr, reg);
-#endif
-
- i2c_read(addr, reg, 1, &buf, 1);
+u_int8_t i2c_reg_read(u_int8_t addr, u_int8_t reg);
- return buf;
-}
-
-static inline void i2c_reg_write(u8 addr, u8 reg, u8 val)
-{
-#ifdef CONFIG_8xx
- /* MPC8xx needs this. Maybe one day we can get rid of it. */
- i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
-#endif
-
-#ifdef DEBUG
- printf("%s: addr=0x%02x, reg=0x%02x, val=0x%02x\n",
- __func__, addr, reg, val);
-#endif
-
- i2c_write(addr, reg, 1, &val, 1);
-}
-
-/*
- * Functions for setting the current I2C bus and its speed
- */
+void i2c_reg_write(u_int8_t addr, u_int8_t reg, u_int8_t val);
/*
- * i2c_set_bus_num:
+ * i2c_set_bus_speed:
*
- * Change the active I2C bus. Subsequent read/write calls will
- * go to this one.
+ * Change the speed of the active I2C bus
*
- * bus - bus index, zero based
+ * speed - bus speed in Hz
*
- * Returns: 0 on success, not 0 on failure
+ * Returns: new bus speed
*
*/
-int i2c_set_bus_num(unsigned int bus);
+unsigned int i2c_set_bus_speed(unsigned int speed);
/*
- * i2c_get_bus_num:
+ * i2c_get_bus_speed:
*
- * Returns index of currently active I2C bus. Zero-based.
+ * Returns speed of currently active I2C bus in Hz
*/
-unsigned int i2c_get_bus_num(void);
+unsigned int i2c_get_bus_speed(void);
/*
- * i2c_set_bus_speed:
- *
- * Change the speed of the active I2C bus
- *
- * speed - bus speed in Hz
- *
- * Returns: 0 on success, not 0 on failure
+ * i2c_reloc_fixup:
*
+ * Adjusts I2C pointers after U-Boot is relocated to DRAM
*/
-int i2c_set_bus_speed(unsigned int);
+void i2c_reloc_fixup(void);
+
+#ifndef I2C_SOFT_DEFS
+# if defined(CONFIG_MPC8260)
+# define I2C_SOFT_DEFS volatile ioport_t *iop = ioport_addr((immap_t *)CONFIG_SYS_IMMR, I2C_PORT);
+# elif defined(CONFIG_8xx)
+# define I2C_SOFT_DEFS volatile immap_t *immr = (immap_t *)CONFIG_SYS_IMMR;
+# else
+# define I2C_SOFT_DEFS
+# endif
/*
- * i2c_get_bus_speed:
- *
- * Returns speed of currently active I2C bus in Hz
+ * Initialization, must be called once on start up, may be called
+ * repeatedly to change the speed and slave addresses.
*/
-
-unsigned int i2c_get_bus_speed(void);
+void i2c_init(unsigned int speed, int slaveaddr);
+#ifdef CONFIG_SYS_I2C_INIT_BOARD
+void i2c_init_board(void);
+#endif
#endif /* _I2C_H_ */
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