diff --git a/arch/arm/cpu/tegra20-common/pmu.c b/arch/arm/cpu/tegra20-common/pmu.c
index 36a76a24d971e7d012570cc7ad7e3c16a2a1a4f5..a774246a2779435b47376b4f7e2cb093a59a991d 100644
--- a/arch/arm/cpu/tegra20-common/pmu.c
+++ b/arch/arm/cpu/tegra20-common/pmu.c
@@ -52,7 +52,7 @@ int pmu_set_nominal(void)
debug("%s: Cannot find DVC I2C bus\n", __func__);
return ret;
}
- ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, &dev);
+ ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find DVC I2C chip\n", __func__);
return ret;
diff --git a/board/avionic-design/common/tamonten-ng.c b/board/avionic-design/common/tamonten-ng.c
index bca91831e0ef487db30241b01854a9c9de7321ab..1704627112642027a42bf1f8f13bfd8436808d09 100644
--- a/board/avionic-design/common/tamonten-ng.c
+++ b/board/avionic-design/common/tamonten-ng.c
@@ -55,7 +55,7 @@ void pmu_write(uchar reg, uchar data)
struct udevice *dev;
int ret;
- ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, &dev);
+ ret = i2c_get_chip_for_busnum(4, PMU_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
diff --git a/board/nvidia/cardhu/cardhu.c b/board/nvidia/cardhu/cardhu.c
index fc31d29140b474950195b4b11db1ee0a9dcb8b0d..1540526a61348eb1959a6f6864b135c648adcbd6 100644
--- a/board/nvidia/cardhu/cardhu.c
+++ b/board/nvidia/cardhu/cardhu.c
@@ -46,7 +46,7 @@ void board_sdmmc_voltage_init(void)
int ret;
int i;
- ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+ ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
@@ -94,7 +94,7 @@ int tegra_pcie_board_init(void)
u8 addr, data[1];
int err;
- err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+ err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (err) {
debug("failed to find PMU bus\n");
return err;
diff --git a/board/nvidia/dalmore/dalmore.c b/board/nvidia/dalmore/dalmore.c
index c0991c57a97d6dfddb8ba6705c73138d02eb1797..d7c1a695ff804562459791b2dd28d67d64609300 100644
--- a/board/nvidia/dalmore/dalmore.c
+++ b/board/nvidia/dalmore/dalmore.c
@@ -55,7 +55,7 @@ void board_sdmmc_voltage_init(void)
uchar reg, data_buffer[1];
int ret;
- ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+ ret = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return;
@@ -83,7 +83,7 @@ void board_sdmmc_voltage_init(void)
data_buffer[0] = 0x03;
reg = 0x14;
- ret = i2c_get_chip_for_busnum(0, BAT_I2C_ADDRESS, &dev);
+ ret = i2c_get_chip_for_busnum(0, BAT_I2C_ADDRESS, 1, &dev);
if (ret) {
debug("%s: Cannot find charger I2C chip\n", __func__);
return;
diff --git a/board/nvidia/whistler/whistler.c b/board/nvidia/whistler/whistler.c
index ad6ea091df7c6bf130dea49f47bebd4a623f7e15..3476f1159feadc70ca214bb72af914143ef15153 100644
--- a/board/nvidia/whistler/whistler.c
+++ b/board/nvidia/whistler/whistler.c
@@ -27,7 +27,7 @@ void pin_mux_mmc(void)
int ret;
/* Turn on MAX8907B LDO12 to 2.8V for J40 power */
- ret = i2c_get_chip_for_busnum(0, 0x3c, &dev);
+ ret = i2c_get_chip_for_busnum(0, 0x3c, 1, &dev);
if (ret) {
printf("%s: Cannot find MAX8907B I2C chip\n", __func__);
return;
@@ -64,7 +64,7 @@ void pin_mux_usb(void)
*/
/* Turn on TAC6416's GPIO 0+1 for USB1/3's VBUS */
- ret = i2c_get_chip_for_busnum(0, 0x20, &dev);
+ ret = i2c_get_chip_for_busnum(0, 0x20, 1, &dev);
if (ret) {
printf("%s: Cannot find TAC6416 I2C chip\n", __func__);
return;
diff --git a/board/toradex/apalis_t30/apalis_t30.c b/board/toradex/apalis_t30/apalis_t30.c
index 1c4b4c1cd487ab684d5c6b99d742865425914af2..624421496a408fe72128bdf31083ab249559da8f 100644
--- a/board/toradex/apalis_t30/apalis_t30.c
+++ b/board/toradex/apalis_t30/apalis_t30.c
@@ -42,7 +42,7 @@ int tegra_pcie_board_init(void)
u8 addr, data[1];
int err;
- err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, &dev);
+ err = i2c_get_chip_for_busnum(0, PMU_I2C_ADDRESS, 1, &dev);
if (err) {
debug("%s: Cannot find PMIC I2C chip\n", __func__);
return err;
diff --git a/common/cmd_i2c.c b/common/cmd_i2c.c
index 1e500fbf2cc66b68d7746b9b8d53f7fbe823071d..7c3ad00fdf03f30ee358cf4501717d6e657e5d18 100644
--- a/common/cmd_i2c.c
+++ b/common/cmd_i2c.c
@@ -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
diff --git a/drivers/i2c/i2c-uclass.c b/drivers/i2c/i2c-uclass.c
index 25f2c18cf4f235dc0f74b28c27efb5c02fa1c02e..24e5ec68f2b4207d22ebaeb20a9e7e99d112d838 100644
--- a/drivers/i2c/i2c-uclass.c
+++ b/drivers/i2c/i2c-uclass.c
@@ -220,7 +220,7 @@ static int i2c_probe_chip(struct udevice *bus, uint chip_addr,
return ops->xfer(bus, msg, 1);
}
-static int i2c_bind_driver(struct udevice *bus, uint chip_addr,
+static int i2c_bind_driver(struct udevice *bus, uint chip_addr, uint offset_len,
struct udevice **devp)
{
struct dm_i2c_chip chip;
@@ -238,7 +238,7 @@ static int i2c_bind_driver(struct udevice *bus, uint chip_addr,
/* Tell the device what we know about it */
memset(&chip, '\0', sizeof(chip));
chip.chip_addr = chip_addr;
- chip.offset_len = 1; /* we assume */
+ chip.offset_len = offset_len;
ret = device_probe_child(dev, &chip);
debug("%s: device_probe_child: ret=%d\n", __func__, ret);
if (ret)
@@ -254,7 +254,8 @@ err_bind:
return ret;
}
-int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp)
+int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len,
+ struct udevice **devp)
{
struct udevice *dev;
@@ -281,10 +282,11 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp)
}
}
debug("not found\n");
- return i2c_bind_driver(bus, chip_addr, devp);
+ return i2c_bind_driver(bus, chip_addr, offset_len, devp);
}
-int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp)
+int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
+ struct udevice **devp)
{
struct udevice *bus;
int ret;
@@ -294,7 +296,7 @@ int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp)
debug("Cannot find I2C bus %d\n", busnum);
return ret;
}
- ret = i2c_get_chip(bus, chip_addr, devp);
+ ret = i2c_get_chip(bus, chip_addr, offset_len, devp);
if (ret) {
debug("Cannot find I2C chip %02x on bus %d\n", chip_addr,
busnum);
@@ -319,7 +321,7 @@ int dm_i2c_probe(struct udevice *bus, uint chip_addr, uint chip_flags,
return ret;
/* The chip was found, see if we have a driver, and probe it */
- ret = i2c_get_chip(bus, chip_addr, devp);
+ ret = i2c_get_chip(bus, chip_addr, 1, devp);
debug("%s: i2c_get_chip: ret=%d\n", __func__, ret);
return ret;
diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c
index f0e9f51a1f28fda9822e765a5821b095f6badfef..e2f6c3b9bb50b790d57073fe0e4416def84081d5 100644
--- a/drivers/i2c/sandbox_i2c.c
+++ b/drivers/i2c/sandbox_i2c.c
@@ -60,7 +60,7 @@ static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
if (msg->addr == SANDBOX_I2C_TEST_ADDR)
return 0;
- ret = i2c_get_chip(bus, msg->addr, &dev);
+ ret = i2c_get_chip(bus, msg->addr, 1, &dev);
if (ret)
return ret;
diff --git a/drivers/power/as3722.c b/drivers/power/as3722.c
index 3aafdc96704a070c5c9ac49d7e9139626d92af68..a60bb5f83fbc5cda5a5533b3893f85e47d450c0a 100644
--- a/drivers/power/as3722.c
+++ b/drivers/power/as3722.c
@@ -242,7 +242,7 @@ int as3722_init(struct udevice **devp)
const unsigned int address = 0x40;
int err;
- err = i2c_get_chip_for_busnum(bus, address, &pmic);
+ err = i2c_get_chip_for_busnum(bus, address, 1, &pmic);
if (err)
return err;
err = as3722_read_id(pmic, &id, &revision);
diff --git a/include/i2c.h b/include/i2c.h
index 47529f4b283fe1b1c73157148cb615480f46f15a..76090b7a93ac5d0c92f9a3fbf09936ef1f012fe0 100644
--- a/include/i2c.h
+++ b/include/i2c.h
@@ -388,10 +388,12 @@ struct dm_i2c_ops {
*
* @bus: Bus to examine
* @chip_addr: Chip address for the new device
+ * @offset_len: Length of a register offset in bytes (normally 1)
* @devp: Returns pointer to new device if found or -ENODEV if not
* found
*/
-int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp);
+int i2c_get_chip(struct udevice *bus, uint chip_addr, uint offset_len,
+ struct udevice **devp);
/**
* i2c_get_chip() - get a device to use to access a chip on a bus number
@@ -401,10 +403,12 @@ int i2c_get_chip(struct udevice *bus, uint chip_addr, struct udevice **devp);
*
* @busnum: Bus number to examine
* @chip_addr: Chip address for the new device
+ * @offset_len: Length of a register offset in bytes (normally 1)
* @devp: Returns pointer to new device if found or -ENODEV if not
* found
*/
-int i2c_get_chip_for_busnum(int busnum, int chip_addr, struct udevice **devp);
+int i2c_get_chip_for_busnum(int busnum, int chip_addr, uint offset_len,
+ struct udevice **devp);
/**
* i2c_chip_ofdata_to_platdata() - Decode standard I2C platform data
diff --git a/test/dm/i2c.c b/test/dm/i2c.c
index 4823b0c6483655c4cd112e736f08c25965b49d32..ef88372d56361ab40186a34787cc6c7a8e0c40d4 100644
--- a/test/dm/i2c.c
+++ b/test/dm/i2c.c
@@ -49,7 +49,7 @@ static int dm_test_i2c_read_write(struct dm_test_state *dms)
uint8_t buf[5];
ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
- ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
ut_assertok(dm_i2c_write(dev, 2, (uint8_t *)"AB", 2));
@@ -66,7 +66,7 @@ static int dm_test_i2c_speed(struct dm_test_state *dms)
uint8_t buf[5];
ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
- ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
ut_assertok(i2c_set_bus_speed(bus, 100000));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(i2c_set_bus_speed(bus, 400000));
@@ -84,7 +84,7 @@ static int dm_test_i2c_offset_len(struct dm_test_state *dms)
uint8_t buf[5];
ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
- ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
ut_assertok(i2c_set_chip_offset_len(dev, 1));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
@@ -113,7 +113,7 @@ static int dm_test_i2c_bytewise(struct dm_test_state *dms)
uint8_t buf[5];
ut_assertok(uclass_get_device_by_seq(UCLASS_I2C, busnum, &bus));
- ut_assertok(i2c_get_chip(bus, chip, &dev));
+ ut_assertok(i2c_get_chip(bus, chip, 1, &dev));
ut_assertok(dm_i2c_read(dev, 0, buf, 5));
ut_assertok(memcmp(buf, "\0\0\0\0\0", sizeof(buf)));
@@ -167,7 +167,7 @@ static int dm_test_i2c_offset(struct dm_test_state *dms)
struct udevice *dev;
uint8_t buf[5];
- ut_assertok(i2c_get_chip_for_busnum(busnum, chip, &dev));
+ ut_assertok(i2c_get_chip_for_busnum(busnum, chip, 1, &dev));
/* Do a transfer so we can find the emulator */
ut_assertok(dm_i2c_read(dev, 0, buf, 5));