/*
- * (C) Copyright 2001
- * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
+ * (C) Copyright 2009
+ * Sergey Kubushyn, himself, ksi@koi8.net
*
- * See file CREDITS for list of people who contributed to this
- * project.
+ * Changes for unified multibus/multiadapter I2C support.
*
- * 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.
+ * (C) Copyright 2001
+ * Gerald Van Baren, Custom IDEAS, vanbaren@cideas.com.
*
- * 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
+ * SPDX-License-Identifier: GPL-2.0+
*/
/*
*/
#include <common.h>
+#include <bootretry.h>
+#include <cli.h>
#include <command.h>
+#include <dm.h>
#include <edid.h>
#include <environment.h>
+#include <errno.h>
#include <i2c.h>
#include <malloc.h>
#include <asm/byteorder.h>
#include <linux/compiler.h>
+DECLARE_GLOBAL_DATA_PTR;
+
/* Display values from last command.
* Memory modify remembered values are different from display memory.
*/
-static uchar i2c_dp_last_chip;
+static uint i2c_dp_last_chip;
static uint i2c_dp_last_addr;
static uint i2c_dp_last_alen;
static uint i2c_dp_last_length = 0x10;
-static uchar i2c_mm_last_chip;
+static uint i2c_mm_last_chip;
static uint i2c_mm_last_addr;
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 defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS)
static struct
{
uchar bus;
#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 /* defined(CONFIG_SYS_I2C) */
+#endif
-#define NUM_ELEMENTS_NOPROBE (sizeof(i2c_no_probes)/sizeof(i2c_no_probes[0]))
+#define DISP_LINE_LEN 16
+
+/*
+ * Default for driver model is to use the chip's existing address length.
+ * For legacy code, this is not stored, so we need to use a suitable
+ * default.
+ */
+#ifdef CONFIG_DM_I2C
+#define DEFAULT_ADDR_LEN (-1)
+#else
+#define DEFAULT_ADDR_LEN 1
#endif
-#if defined(CONFIG_I2C_MUX)
-static I2C_MUX_DEVICE *i2c_mux_devices = NULL;
-static int i2c_mux_busid = CONFIG_SYS_MAX_I2C_BUS;
+#ifdef CONFIG_DM_I2C
+static struct udevice *i2c_cur_bus;
-DECLARE_GLOBAL_DATA_PTR;
+static int cmd_i2c_set_bus_num(unsigned int busnum)
+{
+ struct udevice *bus;
+ int ret;
-#endif
+ ret = uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus);
+ if (ret) {
+ debug("%s: No bus %d\n", __func__, busnum);
+ return ret;
+ }
+ i2c_cur_bus = bus;
-#define DISP_LINE_LEN 16
+ return 0;
+}
+
+static int i2c_get_cur_bus(struct udevice **busp)
+{
+ if (!i2c_cur_bus) {
+ puts("No I2C bus selected\n");
+ return -ENODEV;
+ }
+ *busp = i2c_cur_bus;
+
+ return 0;
+}
+
+static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp)
+{
+ struct udevice *bus;
+ int ret;
+
+ ret = i2c_get_cur_bus(&bus);
+ if (ret)
+ return ret;
+
+ return i2c_get_chip(bus, chip_addr, 1, devp);
+}
+
+#endif
/**
* i2c_init_board() - Board-specific I2C bus init
__weak
void i2c_init_board(void)
{
- return;
}
/* TODO: Implement architecture-specific get/set functions */
*
* Returns I2C bus speed in Hz.
*/
+#if !defined(CONFIG_SYS_I2C) && !defined(CONFIG_DM_I2C)
+/*
+ * TODO: Implement architecture-specific get/set functions
+ * Should go away, if we switched completely to new multibus support
+ */
__weak
unsigned int i2c_get_bus_speed(void)
{
return 0;
}
+#endif
/**
* get_alen() - Small parser helper function to get address length
*
* Returns the address length.
*/
-static uint get_alen(char *arg)
+static uint get_alen(char *arg, int default_len)
{
int j;
int alen;
- alen = 1;
+ alen = default_len;
for (j = 0; j < 8; j++) {
if (arg[j] == '.') {
alen = arg[j+1] - '0';
return alen;
}
+enum i2c_err_op {
+ I2C_ERR_READ,
+ I2C_ERR_WRITE,
+};
+
+static int i2c_report_err(int ret, enum i2c_err_op op)
+{
+ printf("Error %s the chip: %d\n",
+ op == I2C_ERR_READ ? "reading" : "writing", ret);
+
+ return CMD_RET_FAILURE;
+}
+
/**
* do_i2c_read() - Handle the "i2c read" command-line command
* @cmdtp: Command data struct pointer
*/
static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
- uint devaddr, alen, length;
+ uint chip;
+ uint devaddr, length;
+ int alen;
u_char *memaddr;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if (argc != 5)
return CMD_RET_USAGE;
* 2 bytes long. Some day it might be 3 bytes long :-).
*/
devaddr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
*/
memaddr = (u_char *)simple_strtoul(argv[4], NULL, 16);
- if (i2c_read(chip, devaddr, alen, memaddr, length) != 0) {
- puts ("Error reading the chip.\n");
- return 1;
- }
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (!ret)
+ ret = dm_i2c_read(dev, devaddr, memaddr, length);
+#else
+ ret = i2c_read(chip, devaddr, alen, memaddr, length);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
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;
+ uint chip;
+ uint devaddr, length;
+ int alen;
u_char *memaddr;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+ struct dm_i2c_chip *i2c_chip;
+#endif
- if (argc != 5)
+ if ((argc < 5) || (argc > 6))
return cmd_usage(cmdtp);
/*
* 2 bytes long. Some day it might be 3 bytes long :-).
*/
devaddr = simple_strtoul(argv[3], NULL, 16);
- alen = get_alen(argv[3]);
+ alen = get_alen(argv[3], DEFAULT_ADDR_LEN);
if (alen > 3)
return cmd_usage(cmdtp);
/*
- * Length is the number of objects, not number of bytes.
+ * Length is the 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;
- }
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+ i2c_chip = dev_get_parent_platdata(dev);
+ if (!i2c_chip)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
+
+ if (argc == 6 && !strcmp(argv[5], "-s")) {
+ /*
+ * Write all bytes in a single I2C transaction. If the target
+ * device is an EEPROM, it is your responsibility to not cross
+ * a page boundary. No write delay upon completion, take this
+ * into account if linking commands.
+ */
+#ifdef CONFIG_DM_I2C
+ i2c_chip->flags &= ~DM_I2C_CHIP_WR_ADDRESS;
+ ret = dm_i2c_write(dev, devaddr, memaddr, length);
+#else
+ ret = i2c_write(chip, devaddr, alen, memaddr, length);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+ } else {
+ /*
+ * Repeated addressing - perform <length> separate
+ * write transactions of one byte each
+ */
+ while (length-- > 0) {
+#ifdef CONFIG_DM_I2C
+ i2c_chip->flags |= DM_I2C_CHIP_WR_ADDRESS;
+ ret = dm_i2c_write(dev, devaddr++, memaddr++, 1);
+#else
+ ret = i2c_write(chip, devaddr++, alen, memaddr++, 1);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
/*
* No write delay with FRAM devices.
*/
#if !defined(CONFIG_SYS_I2C_FRAM)
- udelay(11000);
+ udelay(11000);
#endif
+ }
+ }
+ return 0;
+}
+
+#ifdef CONFIG_DM_I2C
+static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc,
+ char *const argv[])
+{
+ struct udevice *dev;
+ uint flags;
+ int chip;
+ int ret;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ chip = simple_strtoul(argv[1], NULL, 16);
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
+ if (argc > 2) {
+ flags = simple_strtoul(argv[2], NULL, 16);
+ ret = i2c_set_chip_flags(dev, flags);
+ } else {
+ ret = i2c_get_chip_flags(dev, &flags);
+ if (!ret)
+ printf("%x\n", flags);
+ }
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
+ return 0;
+}
+
+static int do_i2c_olen(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
+{
+ struct udevice *dev;
+ uint olen;
+ int chip;
+ int ret;
+
+ if (argc < 2)
+ return CMD_RET_USAGE;
+
+ chip = simple_strtoul(argv[1], NULL, 16);
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
+ if (argc > 2) {
+ olen = simple_strtoul(argv[2], NULL, 16);
+ ret = i2c_set_chip_offset_len(dev, olen);
+ } else {
+ ret = i2c_get_chip_offset_len(dev);
+ if (ret >= 0) {
+ printf("%x\n", ret);
+ ret = 0;
+ }
}
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
return 0;
}
+#endif
/**
* do_i2c_md() - Handle the "i2c md" command-line command
*/
static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
- uint addr, alen, length;
+ uint chip;
+ uint addr, length;
+ int alen;
int j, nbytes, linebytes;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
/* We use the last specified parameters, unless new ones are
* entered.
* 2 bytes long. Some day it might be 3 bytes long :-).
*/
addr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
length = simple_strtoul(argv[3], NULL, 16);
}
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+#endif
+
/*
* Print the lines.
*
linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
- if (i2c_read(chip, addr, alen, linebuf, linebytes) != 0)
- puts ("Error reading the chip.\n");
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_read(dev, addr, linebuf, linebytes);
+#else
+ ret = i2c_read(chip, addr, alen, linebuf, linebytes);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
else {
printf("%04x:", addr);
cp = linebuf;
*/
static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
- uint alen;
+ int alen;
uchar byte;
int count;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if ((argc < 4) || (argc > 5))
return CMD_RET_USAGE;
* Address is always specified.
*/
addr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
/*
* Value to write is always specified.
*/
count = 1;
while (count-- > 0) {
- if (i2c_write(chip, addr++, alen, &byte, 1) != 0)
- puts ("Error writing the chip.\n");
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_write(dev, addr++, &byte, 1);
+#else
+ ret = i2c_write(chip, addr++, alen, &byte, 1);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
/*
* Wait for the write to complete. The write can take
* up to 10mSec (we allow a little more time).
*/
static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
- uint alen;
+ int alen;
int count;
uchar byte;
ulong crc;
ulong err;
+ int ret = 0;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if (argc < 4)
return CMD_RET_USAGE;
* Address is always specified.
*/
addr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+#endif
/*
* Count is always specified
*/
crc = 0;
err = 0;
while (count-- > 0) {
- if (i2c_read(chip, addr, alen, &byte, 1) != 0)
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_read(dev, addr, &byte, 1);
+#else
+ ret = i2c_read(chip, addr, alen, &byte, 1);
+#endif
+ if (ret)
err++;
crc = crc32 (crc, &byte, 1);
addr++;
}
if (err > 0)
- puts ("Error reading the chip,\n");
+ i2c_report_err(ret, I2C_ERR_READ);
else
printf ("%08lx\n", crc);
static int
mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
- uint alen;
+ int alen;
ulong data;
int size = 1;
int nbytes;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if (argc != 3)
return CMD_RET_USAGE;
-#ifdef CONFIG_BOOT_RETRY_TIME
- reset_cmd_timeout(); /* got a good command to get here */
-#endif
+ bootretry_reset_cmd_timeout(); /* got a good command to get here */
/*
* We use the last specified parameters, unless new ones are
* entered.
* Address is always specified.
*/
addr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
}
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
+
/*
* Print the address, followed by value. Then accept input for
* the next value. A non-converted value exits.
*/
do {
printf("%08lx:", addr);
- if (i2c_read(chip, addr, alen, (uchar *)&data, size) != 0)
- puts ("\nError reading the chip,\n");
- else {
- data = cpu_to_be32(data);
- if (size == 1)
- printf(" %02lx", (data >> 24) & 0x000000FF);
- else if (size == 2)
- printf(" %04lx", (data >> 16) & 0x0000FFFF);
- else
- printf(" %08lx", data);
- }
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_read(dev, addr, (uchar *)&data, size);
+#else
+ ret = i2c_read(chip, addr, alen, (uchar *)&data, size);
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
+
+ data = cpu_to_be32(data);
+ if (size == 1)
+ printf(" %02lx", (data >> 24) & 0x000000FF);
+ else if (size == 2)
+ printf(" %04lx", (data >> 16) & 0x0000FFFF);
+ else
+ printf(" %08lx", data);
- nbytes = readline (" ? ");
+ nbytes = cli_readline(" ? ");
if (nbytes == 0) {
/*
* <CR> pressed as only input, don't modify current
if (incrflag)
addr += size;
nbytes = size;
-#ifdef CONFIG_BOOT_RETRY_TIME
- reset_cmd_timeout(); /* good enough to not time out */
-#endif
+ /* good enough to not time out */
+ bootretry_reset_cmd_timeout();
}
#ifdef CONFIG_BOOT_RETRY_TIME
else if (nbytes == -2)
data = be32_to_cpu(data);
nbytes = endp - console_buffer;
if (nbytes) {
-#ifdef CONFIG_BOOT_RETRY_TIME
/*
* good enough to not time out
*/
- reset_cmd_timeout();
+ bootretry_reset_cmd_timeout();
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_write(dev, addr, (uchar *)&data,
+ size);
+#else
+ ret = i2c_write(chip, addr, alen,
+ (uchar *)&data, size);
#endif
- if (i2c_write(chip, addr, alen, (uchar *)&data, size) != 0)
- puts ("Error writing the chip.\n");
+ if (ret)
+ return i2c_report_err(ret,
+ I2C_ERR_WRITE);
#ifdef CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS
udelay(CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS * 1000);
#endif
int found = 0;
#if defined(CONFIG_SYS_I2C_NOPROBES)
int k, skip;
- uchar bus = GET_BUS_NUM;
+ unsigned int bus = GET_BUS_NUM;
#endif /* NOPROBES */
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *bus, *dev;
+
+ if (i2c_get_cur_bus(&bus))
+ return CMD_RET_FAILURE;
+#endif
if (argc == 2)
addr = simple_strtol(argv[1], 0, 16);
#if defined(CONFIG_SYS_I2C_NOPROBES)
skip = 0;
- for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) {
+ for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) {
if (COMPARE_BUS(bus, k) && COMPARE_ADDR(j, k)) {
skip = 1;
break;
if (skip)
continue;
#endif
- if (i2c_probe(j) == 0) {
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_probe(bus, j, 0, &dev);
+#else
+ ret = i2c_probe(j);
+#endif
+ if (ret == 0) {
printf(" %02X", j);
found++;
}
#if defined(CONFIG_SYS_I2C_NOPROBES)
puts ("Excluded chip addresses:");
- for (k=0; k < NUM_ELEMENTS_NOPROBE; k++) {
+ for (k = 0; k < ARRAY_SIZE(i2c_no_probes); k++) {
if (COMPARE_BUS(bus,k))
printf(" %02X", NO_PROBE_ADDR(k));
}
*/
static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
- ulong alen;
+ uint chip;
+ int alen;
uint addr;
uint length;
u_char bytes[16];
int delay;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if (argc < 3)
return CMD_RET_USAGE;
* Address is always specified.
*/
addr = simple_strtoul(argv[2], NULL, 16);
- alen = get_alen(argv[2]);
+ alen = get_alen(argv[2], DEFAULT_ADDR_LEN);
if (alen > 3)
return CMD_RET_USAGE;
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret && alen != -1)
+ ret = i2c_set_chip_offset_len(dev, alen);
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_WRITE);
+#endif
/*
* Length is the number of objects, not number of bytes.
* Run the loop...
*/
while (1) {
- if (i2c_read(chip, addr, alen, bytes, length) != 0)
- puts ("Error reading the chip.\n");
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_read(dev, addr, bytes, length);
+#else
+ ret = i2c_read(chip, addr, alen, bytes, length);
+#endif
+ if (ret)
+ i2c_report_err(ret, I2C_ERR_READ);
udelay(delay);
}
{
enum { unknown, EDO, SDRAM, DDR2 } type;
- u_char chip;
+ uint chip;
u_char data[128];
u_char cksum;
int j;
#if defined(CONFIG_I2C_EDID)
int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
{
- u_char chip;
+ uint chip;
struct edid1_info edid;
+ int ret;
+#ifdef CONFIG_DM_I2C
+ struct udevice *dev;
+#endif
if (argc < 2) {
cmd_usage(cmdtp);
}
chip = simple_strtoul(argv[1], NULL, 16);
- if (i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid)) != 0) {
- puts("Error reading EDID content.\n");
- return 1;
- }
+#ifdef CONFIG_DM_I2C
+ ret = i2c_get_cur_bus_chip(chip, &dev);
+ if (!ret)
+ ret = dm_i2c_read(dev, 0, (uchar *)&edid, sizeof(edid));
+#else
+ ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid));
+#endif
+ if (ret)
+ return i2c_report_err(ret, I2C_ERR_READ);
if (edid_check_info(&edid)) {
puts("Content isn't valid EDID.\n");
}
#endif /* CONFIG_I2C_EDID */
-#if defined(CONFIG_I2C_MUX)
+#ifdef CONFIG_DM_I2C
+static void show_bus(struct udevice *bus)
+{
+ struct udevice *dev;
+
+ printf("Bus %d:\t%s", bus->req_seq, bus->name);
+ if (device_active(bus))
+ printf(" (active %d)", bus->seq);
+ printf("\n");
+ for (device_find_first_child(bus, &dev);
+ dev;
+ device_find_next_child(&dev)) {
+ struct dm_i2c_chip *chip = dev_get_parent_platdata(dev);
+
+ printf(" %02x: %s, offset len %x, flags %x\n",
+ chip->chip_addr, dev->name, chip->offset_len,
+ chip->flags);
+ }
+}
+#endif
+
/**
- * do_i2c_add_bus() - Handle the "i2c bus" command-line command
+ * do_i2c_show_bus() - Handle the "i2c bus" command-line command
* @cmdtp: Command data struct pointer
* @flag: Command flag
* @argc: Command-line argument count
*
* Returns zero always.
*/
-static int do_i2c_add_bus(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
+static int do_i2c_show_bus(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
{
- int ret=0;
-
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;
+#ifdef CONFIG_DM_I2C
+ struct udevice *bus;
+ struct uclass *uc;
+ int ret;
+
+ ret = uclass_get(UCLASS_I2C, &uc);
+ if (ret)
+ return CMD_RET_FAILURE;
+ uclass_foreach_dev(bus, uc)
+ show_bus(bus);
+#else
+ int i;
+
+ for (i = 0; i < CONFIG_SYS_NUM_I2C_BUSES; i++) {
+ printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name);
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ int j;
+
+ for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
+ if (i2c_bus[i].next_hop[j].chip == 0)
+ break;
+ printf("->%s@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");
}
+#endif
} else {
- (void)i2c_mux_ident_muxstring ((uchar *)argv[1]);
- ret = 0;
+ int i;
+
+ /* show specific bus */
+ i = simple_strtoul(argv[1], NULL, 10);
+#ifdef CONFIG_DM_I2C
+ struct udevice *bus;
+ int ret;
+
+ ret = uclass_get_device_by_seq(UCLASS_I2C, i, &bus);
+ if (ret) {
+ printf("Invalid bus %d: err=%d\n", i, ret);
+ return CMD_RET_FAILURE;
+ }
+ show_bus(bus);
+#else
+ if (i >= CONFIG_SYS_NUM_I2C_BUSES) {
+ printf("Invalid bus %d\n", i);
+ return -1;
+ }
+ printf("Bus %d:\t%s", i, I2C_ADAP_NR(i)->name);
+#ifndef CONFIG_SYS_I2C_DIRECT_BUS
+ int j;
+ for (j = 0; j < CONFIG_SYS_I2C_MAX_HOPS; j++) {
+ if (i2c_bus[i].next_hop[j].chip == 0)
+ break;
+ printf("->%s@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");
+#endif
}
- return ret;
+
+ return 0;
}
-#endif /* CONFIG_I2C_MUX */
+#endif
-#if defined(CONFIG_I2C_MULTI_BUS)
/**
* do_i2c_bus_num() - Handle the "i2c dev" command-line command
* @cmdtp: Command data struct pointer
* Returns zero on success, CMD_RET_USAGE in case of misuse and negative
* on error.
*/
-static int do_i2c_bus_num(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
+#if defined(CONFIG_SYS_I2C) || defined(CONFIG_I2C_MULTI_BUS) || \
+ defined(CONFIG_DM_I2C)
+static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc,
+ char * const argv[])
{
- int bus_idx, ret=0;
+ int ret = 0;
+ int bus_no;
- if (argc == 1)
+ 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);
+#ifdef CONFIG_DM_I2C
+ struct udevice *bus;
+
+ if (!i2c_get_cur_bus(&bus))
+ bus_no = bus->seq;
+ else
+ bus_no = -1;
+#else
+ bus_no = i2c_get_bus_num();
+#endif
+ printf("Current bus is %d\n", bus_no);
+ } else {
+ bus_no = simple_strtoul(argv[1], NULL, 10);
+#if defined(CONFIG_SYS_I2C)
+ if (bus_no >= CONFIG_SYS_NUM_I2C_BUSES) {
+ printf("Invalid bus %d\n", bus_no);
+ return -1;
+ }
+#endif
+ printf("Setting bus to %d\n", bus_no);
+#ifdef CONFIG_DM_I2C
+ ret = cmd_i2c_set_bus_num(bus_no);
+#else
+ ret = i2c_set_bus_num(bus_no);
+#endif
if (ret)
printf("Failure changing bus number (%d)\n", ret);
}
return ret;
}
-#endif /* CONFIG_I2C_MULTI_BUS */
+#endif /* defined(CONFIG_SYS_I2C) */
/**
* do_i2c_bus_speed() - Handle the "i2c speed" command-line command
{
int speed, ret=0;
- if (argc == 1)
+#ifdef CONFIG_DM_I2C
+ struct udevice *bus;
+
+ if (i2c_get_cur_bus(&bus))
+ return 1;
+#endif
+ if (argc == 1) {
+#ifdef CONFIG_DM_I2C
+ speed = dm_i2c_get_bus_speed(bus);
+#else
+ speed = i2c_get_bus_speed();
+#endif
/* querying current speed */
- printf("Current bus speed=%d\n", i2c_get_bus_speed());
- else {
+ printf("Current bus speed=%d\n", speed);
+ } else {
speed = simple_strtoul(argv[1], NULL, 10);
printf("Setting bus speed to %d Hz\n", speed);
+#ifdef CONFIG_DM_I2C
+ ret = dm_i2c_set_bus_speed(bus, speed);
+#else
ret = i2c_set_bus_speed(speed);
+#endif
if (ret)
printf("Failure changing bus speed (%d)\n", ret);
}
*/
static int do_i2c_reset(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
+#if defined(CONFIG_DM_I2C)
+ struct udevice *bus;
+
+ if (i2c_get_cur_bus(&bus))
+ return CMD_RET_FAILURE;
+ if (i2c_deblock(bus)) {
+ printf("Error: Not supported by the driver\n");
+ return CMD_RET_FAILURE;
+ }
+#elif defined(CONFIG_SYS_I2C)
+ i2c_init(I2C_ADAP->speed, I2C_ADAP->slaveaddr);
+#else
i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+#endif
return 0;
}
static cmd_tbl_t cmd_i2c_sub[] = {
-#if defined(CONFIG_I2C_MUX)
- U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_add_bus, "", ""),
-#endif /* CONFIG_I2C_MUX */
+#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
+ U_BOOT_CMD_MKENT(bus, 1, 1, do_i2c_show_bus, "", ""),
+#endif
U_BOOT_CMD_MKENT(crc32, 3, 1, do_i2c_crc, "", ""),
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if defined(CONFIG_SYS_I2C) || \
+ defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C)
U_BOOT_CMD_MKENT(dev, 1, 1, do_i2c_bus_num, "", ""),
#endif /* CONFIG_I2C_MULTI_BUS */
#if defined(CONFIG_I2C_EDID)
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(write, 6, 0, do_i2c_write, "", ""),
+#ifdef CONFIG_DM_I2C
+ U_BOOT_CMD_MKENT(flags, 2, 1, do_i2c_flags, "", ""),
+ U_BOOT_CMD_MKENT(olen, 2, 1, do_i2c_olen, "", ""),
+#endif
U_BOOT_CMD_MKENT(reset, 0, 1, do_i2c_reset, "", ""),
#if defined(CONFIG_CMD_SDRAM)
U_BOOT_CMD_MKENT(sdram, 1, 1, do_sdram, "", ""),
/***************************************************/
#ifdef CONFIG_SYS_LONGHELP
static char i2c_help_text[] =
-#if defined(CONFIG_I2C_MUX)
- "bus [muxtype:muxaddr:muxchannel] - add a new bus reached over muxes\ni2c "
-#endif /* CONFIG_I2C_MUX */
+#if defined(CONFIG_SYS_I2C) || defined(CONFIG_DM_I2C)
+ "bus [muxtype:muxaddr:muxchannel] - show I2C bus info\n"
+#endif
"crc32 chip address[.0, .1, .2] count - compute CRC32 checksum\n"
-#if defined(CONFIG_I2C_MULTI_BUS)
+#if defined(CONFIG_SYS_I2C) || \
+ defined(CONFIG_I2C_MULTI_BUS) || defined(CONFIG_DM_I2C)
"i2c dev [dev] - show or set current I2C bus\n"
#endif /* CONFIG_I2C_MULTI_BUS */
#if defined(CONFIG_I2C_EDID)
"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 [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 read chip address[.0, .1, .2] length memaddress - read to memory\n"
+ "i2c write memaddress chip address[.0, .1, .2] length [-s] - write memory\n"
+ " to I2C; the -s option selects bulk write in a single transaction\n"
+#ifdef CONFIG_DM_I2C
+ "i2c flags chip [flags] - set or get chip flags\n"
+ "i2c olen chip [offset_length] - set or get chip offset length\n"
+#endif
"i2c reset - re-init the I2C Controller\n"
#if defined(CONFIG_CMD_SDRAM)
"i2c sdram chip - print SDRAM configuration information\n"
#endif
U_BOOT_CMD(
- i2c, 6, 1, do_i2c,
+ i2c, 7, 1, do_i2c,
"I2C sub-system",
i2c_help_text
);
-
-#if defined(CONFIG_I2C_MUX)
-static 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 immediately sends 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;
-
- }
- i2c_init_board();
-
- 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) {
- /* 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);
- return -1;
- }
- 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