summaryrefslogtreecommitdiff
path: root/common/cmd_i2c.c
diff options
context:
space:
mode:
Diffstat (limited to 'common/cmd_i2c.c')
-rw-r--r--common/cmd_i2c.c125
1 files changed, 78 insertions, 47 deletions
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index 22db1bb..ad38cbf 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -83,12 +83,12 @@ 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;
@@ -133,7 +133,7 @@ static uchar i2c_no_probes[] = CONFIG_SYS_I2C_NOPROBES;
#ifdef CONFIG_DM_I2C
static struct udevice *i2c_cur_bus;
-static int i2c_set_bus_num(unsigned int busnum)
+static int cmd_i2c_set_bus_num(unsigned int busnum)
{
struct udevice *bus;
int ret;
@@ -168,7 +168,7 @@ static int i2c_get_cur_bus_chip(uint chip_addr, struct udevice **devp)
if (ret)
return ret;
- return i2c_get_chip(bus, chip_addr, devp);
+ return i2c_get_chip(bus, chip_addr, 1, devp);
}
#endif
@@ -282,7 +282,7 @@ static int i2c_report_err(int ret, enum i2c_err_op op)
*/
static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
+ uint chip;
uint devaddr, length;
int alen;
u_char *memaddr;
@@ -323,7 +323,7 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
if (!ret && alen != -1)
ret = i2c_set_chip_offset_len(dev, alen);
if (!ret)
- ret = i2c_read(dev, devaddr, memaddr, length);
+ ret = dm_i2c_read(dev, devaddr, memaddr, length);
#else
ret = i2c_read(chip, devaddr, alen, memaddr, length);
#endif
@@ -335,16 +335,17 @@ static int do_i2c_read ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
+ 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);
/*
@@ -367,7 +368,7 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
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);
@@ -377,22 +378,47 @@ static int do_i2c_write(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[
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
- while (length-- > 0) {
+ 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
- ret = i2c_write(dev, devaddr++, memaddr++, 1);
+ i2c_chip->flags &= ~DM_I2C_CHIP_WR_ADDRESS;
+ ret = dm_i2c_write(dev, devaddr, memaddr, length);
#else
- ret = i2c_write(chip, devaddr++, alen, memaddr++, 1);
+ 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;
}
@@ -444,7 +470,7 @@ static int do_i2c_flags(cmd_tbl_t *cmdtp, int flag, int argc,
*/
static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
+ uint chip;
uint addr, length;
int alen;
int j, nbytes, linebytes;
@@ -513,12 +539,12 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
linebytes = (nbytes > DISP_LINE_LEN) ? DISP_LINE_LEN : nbytes;
#ifdef CONFIG_DM_I2C
- ret = i2c_read(dev, addr, linebuf, linebytes);
+ ret = dm_i2c_read(dev, addr, linebuf, linebytes);
#else
ret = i2c_read(chip, addr, alen, linebuf, linebytes);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_READ);
+ return i2c_report_err(ret, I2C_ERR_READ);
else {
printf("%04x:", addr);
cp = linebuf;
@@ -563,7 +589,7 @@ static int do_i2c_md ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
*/
static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
int alen;
uchar byte;
@@ -611,12 +637,12 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
while (count-- > 0) {
#ifdef CONFIG_DM_I2C
- ret = i2c_write(dev, addr++, &byte, 1);
+ ret = dm_i2c_write(dev, addr++, &byte, 1);
#else
ret = i2c_write(chip, addr++, alen, &byte, 1);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_WRITE);
+ 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).
@@ -649,7 +675,7 @@ static int do_i2c_mw ( cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
*/
static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
int alen;
int count;
@@ -698,7 +724,7 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
err = 0;
while (count-- > 0) {
#ifdef CONFIG_DM_I2C
- ret = i2c_read(dev, addr, &byte, 1);
+ ret = dm_i2c_read(dev, addr, &byte, 1);
#else
ret = i2c_read(chip, addr, alen, &byte, 1);
#endif
@@ -734,7 +760,7 @@ static int do_i2c_crc (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
static int
mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const argv[])
{
- uchar chip;
+ uint chip;
ulong addr;
int alen;
ulong data;
@@ -793,21 +819,20 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
do {
printf("%08lx:", addr);
#ifdef CONFIG_DM_I2C
- ret = i2c_read(dev, addr, (uchar *)&data, size);
+ ret = dm_i2c_read(dev, addr, (uchar *)&data, size);
#else
ret = i2c_read(chip, addr, alen, (uchar *)&data, size);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_READ);
- 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);
- }
+ 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 = cli_readline(" ? ");
if (nbytes == 0) {
@@ -841,14 +866,15 @@ mod_i2c_mem(cmd_tbl_t *cmdtp, int incrflag, int flag, int argc, char * const arg
*/
bootretry_reset_cmd_timeout();
#ifdef CONFIG_DM_I2C
- ret = i2c_write(dev, addr, (uchar *)&data,
- size);
+ ret = dm_i2c_write(dev, addr, (uchar *)&data,
+ size);
#else
ret = i2c_write(chip, addr, alen,
(uchar *)&data, size);
#endif
if (ret)
- i2c_report_err(ret, I2C_ERR_WRITE);
+ 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
@@ -917,7 +943,7 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
continue;
#endif
#ifdef CONFIG_DM_I2C
- ret = i2c_probe(bus, j, 0, &dev);
+ ret = dm_i2c_probe(bus, j, 0, &dev);
#else
ret = i2c_probe(j);
#endif
@@ -957,7 +983,7 @@ static int do_i2c_probe (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv
*/
static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
- u_char chip;
+ uint chip;
int alen;
uint addr;
uint length;
@@ -1010,7 +1036,7 @@ static int do_i2c_loop(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]
*/
while (1) {
#ifdef CONFIG_DM_I2C
- ret = i2c_read(dev, addr, bytes, length);
+ ret = dm_i2c_read(dev, addr, bytes, length);
#else
ret = i2c_read(chip, addr, alen, bytes, length);
#endif
@@ -1085,7 +1111,7 @@ static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
{
enum { unknown, EDO, SDRAM, DDR2 } type;
- u_char chip;
+ uint chip;
u_char data[128];
u_char cksum;
int j;
@@ -1563,7 +1589,7 @@ static int do_sdram (cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
#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
@@ -1579,7 +1605,7 @@ int do_edid(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
#ifdef CONFIG_DM_I2C
ret = i2c_get_cur_bus_chip(chip, &dev);
if (!ret)
- ret = i2c_read(dev, 0, (uchar *)&edid, sizeof(edid));
+ ret = dm_i2c_read(dev, 0, (uchar *)&edid, sizeof(edid));
#else
ret = i2c_read(chip, 0, 1, (uchar *)&edid, sizeof(edid));
#endif
@@ -1696,7 +1722,11 @@ static int do_i2c_bus_num(cmd_tbl_t *cmdtp, int flag, int argc,
}
#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);
}
@@ -1726,7 +1756,7 @@ static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const
#endif
if (argc == 1) {
#ifdef CONFIG_DM_I2C
- speed = i2c_get_bus_speed(bus);
+ speed = dm_i2c_get_bus_speed(bus);
#else
speed = i2c_get_bus_speed();
#endif
@@ -1736,7 +1766,7 @@ static int do_i2c_bus_speed(cmd_tbl_t * cmdtp, int flag, int argc, char * const
speed = simple_strtoul(argv[1], NULL, 10);
printf("Setting bus speed to %d Hz\n", speed);
#ifdef CONFIG_DM_I2C
- ret = i2c_set_bus_speed(bus, speed);
+ ret = dm_i2c_set_bus_speed(bus, speed);
#else
ret = i2c_set_bus_speed(speed);
#endif
@@ -1823,7 +1853,7 @@ static cmd_tbl_t cmd_i2c_sub[] = {
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, "", ""),
#endif
@@ -1890,7 +1920,8 @@ static char i2c_help_text[] =
"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 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"
#endif
@@ -1902,7 +1933,7 @@ static char i2c_help_text[] =
#endif
U_BOOT_CMD(
- i2c, 6, 1, do_i2c,
+ i2c, 7, 1, do_i2c,
"I2C sub-system",
i2c_help_text
);
generated by cgit v1.1 at 2024-08-20 17:09:08 +0000