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Diffstat (limited to 'drivers/i2c/muxes')
-rw-r--r--drivers/i2c/muxes/i2c-mux-mlxcpld.c28
-rw-r--r--drivers/i2c/muxes/i2c-mux-pca9541.c75
-rw-r--r--drivers/i2c/muxes/i2c-mux-pca954x.c51
3 files changed, 33 insertions, 121 deletions
diff --git a/drivers/i2c/muxes/i2c-mux-mlxcpld.c b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
index 12ad8d65faf6..f2bf3e57ed67 100644
--- a/drivers/i2c/muxes/i2c-mux-mlxcpld.c
+++ b/drivers/i2c/muxes/i2c-mux-mlxcpld.c
@@ -94,31 +94,11 @@ static int mlxcpld_mux_reg_write(struct i2c_adapter *adap,
struct i2c_client *client, u8 val)
{
struct mlxcpld_mux_plat_data *pdata = dev_get_platdata(&client->dev);
- int ret = -ENODEV;
-
- if (adap->algo->master_xfer) {
- struct i2c_msg msg;
- u8 msgbuf[] = {pdata->sel_reg_addr, val};
-
- msg.addr = client->addr;
- msg.flags = 0;
- msg.len = 2;
- msg.buf = msgbuf;
- ret = __i2c_transfer(adap, &msg, 1);
-
- if (ret >= 0 && ret != 1)
- ret = -EREMOTEIO;
- } else if (adap->algo->smbus_xfer) {
- union i2c_smbus_data data;
-
- data.byte = val;
- ret = adap->algo->smbus_xfer(adap, client->addr,
- client->flags, I2C_SMBUS_WRITE,
- pdata->sel_reg_addr,
- I2C_SMBUS_BYTE_DATA, &data);
- }
+ union i2c_smbus_data data = { .byte = val };
- return ret;
+ return __i2c_smbus_xfer(adap, client->addr, client->flags,
+ I2C_SMBUS_WRITE, pdata->sel_reg_addr,
+ I2C_SMBUS_BYTE_DATA, &data);
}
static int mlxcpld_mux_select_chan(struct i2c_mux_core *muxc, u32 chan)
diff --git a/drivers/i2c/muxes/i2c-mux-pca9541.c b/drivers/i2c/muxes/i2c-mux-pca9541.c
index 6a39adaf433f..9e75d6b9140b 100644
--- a/drivers/i2c/muxes/i2c-mux-pca9541.c
+++ b/drivers/i2c/muxes/i2c-mux-pca9541.c
@@ -99,31 +99,11 @@ MODULE_DEVICE_TABLE(of, pca9541_of_match);
static int pca9541_reg_write(struct i2c_client *client, u8 command, u8 val)
{
struct i2c_adapter *adap = client->adapter;
- int ret;
-
- if (adap->algo->master_xfer) {
- struct i2c_msg msg;
- char buf[2];
-
- msg.addr = client->addr;
- msg.flags = 0;
- msg.len = 2;
- buf[0] = command;
- buf[1] = val;
- msg.buf = buf;
- ret = __i2c_transfer(adap, &msg, 1);
- } else {
- union i2c_smbus_data data;
-
- data.byte = val;
- ret = adap->algo->smbus_xfer(adap, client->addr,
- client->flags,
- I2C_SMBUS_WRITE,
- command,
- I2C_SMBUS_BYTE_DATA, &data);
- }
+ union i2c_smbus_data data = { .byte = val };
- return ret;
+ return __i2c_smbus_xfer(adap, client->addr, client->flags,
+ I2C_SMBUS_WRITE, command,
+ I2C_SMBUS_BYTE_DATA, &data);
}
/*
@@ -133,41 +113,14 @@ static int pca9541_reg_write(struct i2c_client *client, u8 command, u8 val)
static int pca9541_reg_read(struct i2c_client *client, u8 command)
{
struct i2c_adapter *adap = client->adapter;
+ union i2c_smbus_data data;
int ret;
- u8 val;
-
- if (adap->algo->master_xfer) {
- struct i2c_msg msg[2] = {
- {
- .addr = client->addr,
- .flags = 0,
- .len = 1,
- .buf = &command
- },
- {
- .addr = client->addr,
- .flags = I2C_M_RD,
- .len = 1,
- .buf = &val
- }
- };
- ret = __i2c_transfer(adap, msg, 2);
- if (ret == 2)
- ret = val;
- else if (ret >= 0)
- ret = -EIO;
- } else {
- union i2c_smbus_data data;
-
- ret = adap->algo->smbus_xfer(adap, client->addr,
- client->flags,
- I2C_SMBUS_READ,
- command,
- I2C_SMBUS_BYTE_DATA, &data);
- if (!ret)
- ret = data.byte;
- }
- return ret;
+
+ ret = __i2c_smbus_xfer(adap, client->addr, client->flags,
+ I2C_SMBUS_READ, command,
+ I2C_SMBUS_BYTE_DATA, &data);
+
+ return ret ?: data.byte;
}
/*
@@ -345,11 +298,11 @@ static int pca9541_probe(struct i2c_client *client,
/*
* I2C accesses are unprotected here.
- * We have to lock the adapter before releasing the bus.
+ * We have to lock the I2C segment before releasing the bus.
*/
- i2c_lock_adapter(adap);
+ i2c_lock_bus(adap, I2C_LOCK_SEGMENT);
pca9541_release_bus(client);
- i2c_unlock_adapter(adap);
+ i2c_unlock_bus(adap, I2C_LOCK_SEGMENT);
/* Create mux adapter */
diff --git a/drivers/i2c/muxes/i2c-mux-pca954x.c b/drivers/i2c/muxes/i2c-mux-pca954x.c
index fbc748027087..24bd9275fde5 100644
--- a/drivers/i2c/muxes/i2c-mux-pca954x.c
+++ b/drivers/i2c/muxes/i2c-mux-pca954x.c
@@ -220,30 +220,11 @@ MODULE_DEVICE_TABLE(of, pca954x_of_match);
static int pca954x_reg_write(struct i2c_adapter *adap,
struct i2c_client *client, u8 val)
{
- int ret = -ENODEV;
-
- if (adap->algo->master_xfer) {
- struct i2c_msg msg;
- char buf[1];
-
- msg.addr = client->addr;
- msg.flags = 0;
- msg.len = 1;
- buf[0] = val;
- msg.buf = buf;
- ret = __i2c_transfer(adap, &msg, 1);
-
- if (ret >= 0 && ret != 1)
- ret = -EREMOTEIO;
- } else {
- union i2c_smbus_data data;
- ret = adap->algo->smbus_xfer(adap, client->addr,
- client->flags,
- I2C_SMBUS_WRITE,
- val, I2C_SMBUS_BYTE, &data);
- }
+ union i2c_smbus_data dummy;
- return ret;
+ return __i2c_smbus_xfer(adap, client->addr, client->flags,
+ I2C_SMBUS_WRITE, val,
+ I2C_SMBUS_BYTE, &dummy);
}
static int pca954x_select_chan(struct i2c_mux_core *muxc, u32 chan)
@@ -368,7 +349,8 @@ static int pca954x_probe(struct i2c_client *client,
{
struct i2c_adapter *adap = to_i2c_adapter(client->dev.parent);
struct pca954x_platform_data *pdata = dev_get_platdata(&client->dev);
- struct device_node *of_node = client->dev.of_node;
+ struct device *dev = &client->dev;
+ struct device_node *np = dev->of_node;
bool idle_disconnect_dt;
struct gpio_desc *gpio;
int num, force, class;
@@ -379,8 +361,7 @@ static int pca954x_probe(struct i2c_client *client,
if (!i2c_check_functionality(adap, I2C_FUNC_SMBUS_BYTE))
return -ENODEV;
- muxc = i2c_mux_alloc(adap, &client->dev,
- PCA954X_MAX_NCHANS, sizeof(*data), 0,
+ muxc = i2c_mux_alloc(adap, dev, PCA954X_MAX_NCHANS, sizeof(*data), 0,
pca954x_select_chan, pca954x_deselect_mux);
if (!muxc)
return -ENOMEM;
@@ -390,7 +371,7 @@ static int pca954x_probe(struct i2c_client *client,
data->client = client;
/* Reset the mux if a reset GPIO is specified. */
- gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH);
+ gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
if (IS_ERR(gpio))
return PTR_ERR(gpio);
if (gpio) {
@@ -400,7 +381,7 @@ static int pca954x_probe(struct i2c_client *client,
udelay(1);
}
- data->chip = of_device_get_match_data(&client->dev);
+ data->chip = of_device_get_match_data(dev);
if (!data->chip)
data->chip = &chips[id->driver_data];
@@ -414,8 +395,7 @@ static int pca954x_probe(struct i2c_client *client,
if (!ret &&
(id.manufacturer_id != data->chip->id.manufacturer_id ||
id.part_id != data->chip->id.part_id)) {
- dev_warn(&client->dev,
- "unexpected device id %03x-%03x-%x\n",
+ dev_warn(dev, "unexpected device id %03x-%03x-%x\n",
id.manufacturer_id, id.part_id,
id.die_revision);
return -ENODEV;
@@ -427,14 +407,14 @@ static int pca954x_probe(struct i2c_client *client,
* initializes the mux to disconnected state.
*/
if (i2c_smbus_write_byte(client, 0) < 0) {
- dev_warn(&client->dev, "probe failed\n");
+ dev_warn(dev, "probe failed\n");
return -ENODEV;
}
data->last_chan = 0; /* force the first selection */
- idle_disconnect_dt = of_node &&
- of_property_read_bool(of_node, "i2c-mux-idle-disconnect");
+ idle_disconnect_dt = np &&
+ of_property_read_bool(np, "i2c-mux-idle-disconnect");
ret = pca954x_irq_setup(muxc);
if (ret)
@@ -465,7 +445,7 @@ static int pca954x_probe(struct i2c_client *client,
}
if (data->irq) {
- ret = devm_request_threaded_irq(&client->dev, data->client->irq,
+ ret = devm_request_threaded_irq(dev, data->client->irq,
NULL, pca954x_irq_handler,
IRQF_ONESHOT | IRQF_SHARED,
"pca954x", data);
@@ -473,8 +453,7 @@ static int pca954x_probe(struct i2c_client *client,
goto fail_cleanup;
}
- dev_info(&client->dev,
- "registered %d multiplexed busses for I2C %s %s\n",
+ dev_info(dev, "registered %d multiplexed busses for I2C %s %s\n",
num, data->chip->muxtype == pca954x_ismux
? "mux" : "switch", client->name);
generated by cgit (git 2.34.1) at 2024-06-21 00:05:09 +0000